WO2001044342A1 - Sealing agent for liquid-crystal display cell, composition for sealing agent for liquid-crystal display cell, and liquid-crystal display element - Google Patents
Sealing agent for liquid-crystal display cell, composition for sealing agent for liquid-crystal display cell, and liquid-crystal display element Download PDFInfo
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- WO2001044342A1 WO2001044342A1 PCT/JP2000/008814 JP0008814W WO0144342A1 WO 2001044342 A1 WO2001044342 A1 WO 2001044342A1 JP 0008814 W JP0008814 W JP 0008814W WO 0144342 A1 WO0144342 A1 WO 0144342A1
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- liquid crystal
- crystal display
- composition
- sealant
- display cell
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/40—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the curing agents used
- C08G59/62—Alcohols or phenols
- C08G59/621—Phenols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/68—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used
- C08G59/686—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/68—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used
- C08G59/688—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used containing phosphorus
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/28—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection
- H01L23/29—Encapsulations, e.g. encapsulating layers, coatings, e.g. for protection characterised by the material, e.g. carbon
- H01L23/293—Organic, e.g. plastic
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Definitions
- Liquid crystal display cell sealant composition for liquid crystal display cell sealant, and liquid crystal display element
- the present invention relates to a liquid crystal display cell sealant, a liquid crystal display cell sealant composition, a liquid crystal display element, and a method for producing the same.
- liquid crystal display panels having the characteristics of light weight and thin type have been widely used as display panels of various devices including personal computers.
- the usage environment is becoming severer, and large, uniform and high-quality liquid crystal display devices are desired.
- a composition for a liquid crystal display cell sealant is a liquid crystal sealed between a transparent glass substrate or a transparent plastic substrate on which an important transparent electrode or an alignment film is appropriately disposed as a component of the liquid crystal display cell.
- a thermosetting resin used to form cells that are sealed to prevent leakage to the outside refers to a cured product of the liquid crystal display cell sealant composition.
- thermosetting liquid crystal display cell sealant composition for example, a one-component thermosetting liquid crystal display cell sealant composition comprising an epoxy resin base material and a dihydrazide-based curing agent appropriately containing a solvent is proposed.
- a one-component thermosetting liquid crystal display cell sealant composition comprising an epoxy resin base material and a dihydrazide-based curing agent appropriately containing a solvent is proposed.
- These compositions satisfy the basic performances related to the sealing properties of liquid crystal cells, such as adhesive sealability under normal conditions, heat resistance, electrical insulation, and non-contamination of liquid crystal.
- a high-quality and high-durability liquid crystal display cell sealant composition that can further improve the display quality of liquid crystal display devices. That is, in recent years, a liquid crystal display device having particularly high quality and excellent durability has been required.
- the emergence of a composition for a liquid crystal display cell sealant that is compatible with a method of manufacturing a liquid crystal display element by a single-wafer hot-press bonding method is also eagerly desired.
- the high quality means that the display function is high-definition, there is no display disturbance, and the display function is secured up to the vicinity of the seal.
- durability means that the display element can be secured for a long period of time even in an environment where the display function is severe.
- composition for a liquid crystal display cell sealant More specifically, it is possible to manufacture liquid crystal display panels that maintain stable liquid crystal display element functions for a long time even in a high-temperature, high-humidity environment.
- the composition for sealants that can be used with any of the hot press and heat bonding methods, especially the cured product of the composition for sealants is rich in low water absorption and has a low free ion concentration derived from the composition, it is cured.
- a novel liquid crystal display cell sealant composition that is rich in water vapor gas barrier properties (low moisture permeability), high in rigidity and high in toughness, excellent in adhesive seal durability, liquid crystal non-contamination, and especially excellent in dimensional stability.
- a method for manufacturing a liquid crystal display element using the composition for a liquid crystal display cell sealant In order to do so, it is necessary to investigate the properties essential for a highly durable liquid crystal display cell sealant. Is required. Disclosure of the invention
- a sealant for a liquid crystal display element comprising a cured product of a composition for a liquid crystal display cell sealant, wherein the cured product has a water absorption of 2% by mass or less.
- a composition for a liquid crystal display cell sealant comprising a curing accelerator comprising a seed.
- composition for a liquid crystal display cell sealant according to the above (6) comprising 0.1 to 20 parts by mass of a curing accelerator comprising at least one selected from an alkyl urea derivative and a phosphazene compound.
- the aqueous solution obtained by mixing the composition with the same mass of pure water has an ion conductivity of 1
- the specific resistance of the liquid crystal after contacting for 145, 1 hour is 250 times or less the specific resistance of the liquid crystal before the contact.
- the rubber-like polymer particles having a softening point temperature of 0 "C or less and an average primary particle size of 5 m or less are 1 to 25% by mass in the composition for a liquid crystal display cell sealant.
- the curing agent is a phenol nopolak resin, a phenol aralkyl resin, a naphthol nopolak resin, a naphthol aralkyl resin, an 11-ring compound-modified phenol nopolak resin, an alicyclic compound-modified naphthol nopolak resin, Polycyclic aromatic compound-modified nopolak resin, polyhydric phenol monomer, polyvinylphenol, vinylphenol copolymer, polyisopropenylphenol, polyisopropenylphenol copolymer, esterified phenol nopolak resin, esterified phenol aralkyl Resin, esterified naphthol nopolak resin, esterified naphthol aralkyl resin, esterified alicyclic compound modified phenol nopolak resin, esterified alicyclic compound modified naphthol novolak resin, esterified polycyclic aromatic compound Novolac resins, esterified polyhydric phenols monomer, esterified Poribin
- the alkyl urea derivative is 3_ (p-chlorophenyl) -1,1-dimethylurine, 3- ( ⁇ , ⁇ -dichlorophenyl) -1,1-dimethylurea, 2,4- [Bis (1,1-dimethylurea)] toluene> 2,6_ [bis (1,1-dimethylurea)] toluene is at least one member selected from the group consisting of (6) and (7).
- Composition for liquid crystal display cell sealant is 3_ (p-chlorophenyl) -1,1-dimethylurine, 3- ( ⁇ , ⁇ -dichlorophenyl) -1,1-dimethylurea, 2,4- [Bis (1,1-dimethylurea)] toluene> 2,6_ [bis (1,1-dimethylurea)] toluene is at least one member selected from the group consisting of (6) and (7).
- Composition for liquid crystal display cell sealant
- R a to R f represent a hydrogen atom, a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms, or an aryl or aralkyl group having 6 to 10 carbon atoms, all of which are the same) Or different.
- a composition for a liquid crystal display cell sealant further comprising 1 to 15 parts by mass of conductive beads with respect to 100 parts by mass of the composition according to (6) or (7).
- a liquid crystal display device obtained by using the composition for a liquid crystal display cell sealant according to any one of (6) to (16).
- liquid crystal display cell sealant according to any one of (6) to (16) above, wherein the liquid crystal display element is manufactured using any of TN liquid crystal, STN liquid crystal, ferroelectric liquid crystal, and antiferroelectric liquid crystal.
- Glass composition or plastic substrate for liquid crystal cell After printing or dispensing on the bonding seal components, pre-curing at a temperature of 50 to 120 ° C, aligning the other substrate and superimposing it, and temporarily fixing the substrate to 80 to Heat-pressing at 200 ° C, bonding and fixing the substrate to a uniform thickness in the range of 1 to 7 m to create a liquid crystal display cell, injecting liquid crystal material into the cell, and photo-curing the injection hole
- a method for producing a liquid crystal display device characterized in that pores are sealed with a liquid crystal sealant composition or a two-liquid crystal sealant composition.
- Print or dispense the composition for bonding on the glass or plastic liquid crystal cell substrate for liquid crystal cell pre-cure at a temperature of 50 to 120, then drop the liquid crystal to prevent air from being trapped.
- the substrates are overlapped, aligned and temporarily fixed, the substrates are hot-pressed at 80 to 150, and the substrates are bonded and fixed to a uniform thickness in the range of 1 to 7 im.
- the sealant for a liquid crystal display cell of the present invention is a sealant for a liquid crystal display element, and is (a) a sealant for a liquid crystal display cell in which the cured product has a water absorption of 2% by mass or less.
- the water absorption is a water absorption expressed as a weight gain after the liquid crystal display cell sealant is immersed in boiling water for 30 minutes.
- the moisture permeability per unit is obtained by the following conversion formula.
- Moisture permeability measured moisture permeability X [film thickness of sample (m) / 100] More preferably,
- the sealant for a liquid crystal display cell of the present invention has the above property (a), and preferably one or two properties selected from (mouth) and (c) are simultaneously secured.
- a liquid crystal display cell sealant comprising:
- the sealant for liquid crystal display cells of the present invention it is extremely important that the cured product has a water absorption of 2% by mass or less after being immersed in boiling water for 30 minutes. This is because the liquid crystal display element obtained by doing so can maintain a high display quality for a long time even when used in a severe environment of high temperature and high humidity.
- the cured product of the composition for a liquid crystal display cell sealant of the present invention has the property (a) described above.
- the sealing agent for liquid crystal display cells of the present invention preferably has a water absorption of less than 1.7% by mass, more preferably less than 1.3% by mass, particularly preferably 0% after 30 minutes of immersion of the cured product in boiling water. It is desirably less than 6% by mass.
- the sealant for a liquid crystal display cell of the present invention in addition to the above (a), (mouth) water vapor permeation amount for 24 hours under an environment of 80 and 95% relative humidity passing through a cured film having a thickness of 100 m. More preferably, the water vapor permeability at 80 ° C. represented by the following formula is 200 g / m 2 ⁇ 24 hrs or less.
- moisture permeability is 100 g / m 2 ⁇ 24 hrs or less, particularly preferably 5 g / m 2 ⁇ 24 hrs or less. 0 g / m 2 ⁇ 24 hrs or less.
- the sealant for a liquid crystal display cell of the present invention in addition to the above (a), (a) and (port), (8) 0.1 part by mass of the liquid crystal display cell sealant and 1 part by mass of the liquid crystal.
- the specific resistance value of the liquid crystal after contacting at 145 ° C. for one hour is 250 times or less the specific resistance value of the liquid crystal before contact. This is because long-term display reliability of the obtained liquid crystal display element can be ensured. More preferably, it is 100 times or less, even more preferably 50 times or less.
- an epoxy resin is cured with a curing agent composed of a polyvalent phenol compound, a polyvalent phenol resin, and an ester thereof.
- the composition be cured using at least one curing accelerator selected from an alkyl urea derivative and a phosphazene compound.
- the sealant for a liquid crystal display cell of the present invention in addition to the above-mentioned properties (a) to (8), at least one or two or more selected from the following (2) to (g): It is particularly preferable that the sealant for a liquid crystal display cell also has properties.
- the glass transition temperature (T g) is 85 or more.
- thermomechanical analyzer (E) The coefficient of linear expansion from 0 to 80 obtained from the thermomechanical analyzer (TMA) is 9 X 10— thing.
- the glass transition temperature (T g) determined by a thermomechanical analyzer (TMA) is 85 ° C or higher. This is preferable because the obtained liquid crystal display element can secure and improve long-term display quality stability in a high temperature range exceeding 6 Ot :. More preferably, T g is 90 or more, and particularly preferably, T g is in the range of 100 to 18 Ot :. If the coefficient of linear expansion from 0 to 80 ° C obtained from a thermomechanical analyzer (TMA) is 9 ⁇ 10—Smm / mmZ or less, the dimensional stability of the obtained liquid crystal display element and, consequently, the gap width stability It is preferable because the property can be secured. It is more preferably less than 7 ⁇ 10 5 mmZmm / t, particularly preferably less than 5 ⁇ 10 5 S mm / mm //.
- the 1 0 0 to 1 5 0 ° C the storage modulus determined from dynamic viscoelasticity measurement is in the range of 1 X 1 0 5 to 1 X 1 0 8 P a, reservoir modulus 1 if X 1 0 5 P a or obtained liquid crystal display device, for example 6 0 to 8 O t: the secured seal rigidity when it is further to high temperatures, preferred.
- the wealth seal layer toughness in a 1 X 1 0 8 P a less and child, by force liquid crystal display device is obtained becomes excellent in high durability.
- the cured product has a Shore hardness D of 7 at 20.
- the liquid crystal display cell obtained thereby can secure a high level of shear adhesive strength.
- the properties described in the above (2) to (g) are at least one selected from the above-mentioned epoxy resin, polyhydric phenolic compound, polyhydric phenolic resin and a curing agent composed of an ester thereof, an alkyl urea derivative and a phosphazene compound. This can be achieved by adding, if necessary, an inorganic filler and rubber-like polymer fine particles at a different quantitative ratio to the seed curing accelerator.
- the composition for a liquid crystal display cell sealant of the present invention comprises: (1) a curing agent comprising at least one selected from an epoxy resin and (2) a polyhydric phenol compound, a polyhydric phenol resin and an ester thereof.
- a composition for a liquid crystal display cell sealant comprising at least one curing accelerator selected from sphazene compounds.
- curing accelerator selected from sphazene compounds.
- inorganic fillers, silane coupling agents, rubber-like polymer fine particles, solvents, etc. can be added to improve primary adhesive sealability, non-contamination of liquid crystal, balance of toughness and heat resistance rigidity, etc.
- cured products of thermosetting liquid crystal display cell sealant compositions that could not be achieved until now. Water absorption rate of 2% by mass or less in nature, and moisture permeability of 200 g / m at 80
- composition for a liquid crystal display cell sealant of the present invention has a water absorption of 2.0% by mass or less, preferably less than 1.7% by mass after 30 minutes of immersion of the cured product in boiling water. This is because the liquid crystal display element obtained by doing so can maintain a high display quality for a long time even when used in a severe environment of high temperature and high humidity. Immersion of the cured product in boiling water
- the water absorption after 30 minutes is more preferably less than 1.3% by mass, particularly preferably less than 0.6% by mass.
- the cured film is expressed as a water vapor permeation amount for 24 hours under a 95% relative humidity environment at 80 which passes through a cured film having a thickness of 100 m. It is more preferable that the water vapor transmission rate be equal to or less than 200 g / m 2 ⁇ 24 hrs. By doing so, it is possible to secure the display quality and the effect of suppressing the reduction of the response speed in a high temperature and high humidity environment. More preferably, the water vapor transmission rate is 100 gZm 2 ⁇ 24 hrs or less, particularly preferably 50 g / m 2 ⁇ 24 hrs or less.
- the ionic conductivity of an aqueous solution obtained by mixing the same mass of pure water is more preferably 10 mS Zm or less.
- the ionic conductivity is more preferably at most 2 mSZm, particularly preferably at most 0.1 SmSZm.
- the composition for a liquid crystal display cell sealant of the present invention has a cured product of the composition in a ratio of 0.1 part by mass to 1 part by mass of liquid crystal when contacted at 145 ° C. for 1 hour.
- the specific resistance value of the liquid crystal is preferably 250 times or less the specific resistance value of the original liquid crystal (the specific resistance value of the liquid crystal after being treated for 144 hours), and the liquid crystal display obtained by doing so is preferable. This is preferable because the display reliability of the element can be ensured. It is more preferably 100 times or less, and most preferably 50 times or less.
- the cured product has a glass transition temperature (T g) of 85 ° C. or more determined by TME (Termomechanical analyzer).
- T g glass transition temperature
- TME Terminal electromechanical analyzer
- the coefficient of linear expansion from 0 to 80 obtained from the thermomechanical analyzer (TMA) of the cured product is 9 X 10 to 15 mmZmmZ: This is preferable because the dimensional stability of the obtained liquid crystal display element and, consequently, the gap width stability can be ensured. More preferably 7 X 1 0- 5 mmZmmZ ° C less than, particularly preferably 5 X 1 0- SmmZmm / t: less than.
- a differential thermal peak curve of differential scanning calorimetry (DSC) obtained by heating 10 mg of the uncured composition at a constant rate of 5 at 5 min. It is preferable that the exothermic onset temperature obtained is in the range of 5 Ot: to 13 Ot :.
- the heat generation start temperature is 50 ° C. or higher, viscosity stability when the obtained composition for a liquid crystal display cell sealant is handled near room temperature can be ensured. The low-temperature fast-curing property when applied to the hot press-type adhesive heating method can be secured.
- a differential thermal peak curve of differential scanning calorimetry (DSC) obtained by heating 1 O mg of the uncured composition at a constant rate of 5 min / min. It is preferable that the maximum exothermic peak temperature thus obtained is 100 ° C to 180 ° C. New When the exothermic peak temperature is at least 100, the low-temperature quick-curing property when applied to the single-wafer hot-press type adhesive heating method can be secured. Can be prevented from becoming severe.
- the cured product has a 20 X: Shore hardness D of 70 or more.
- the liquid crystal display cell obtained by doing so can secure a high level of shear adhesive strength and is preferable.
- 1 0 0-1 5 0 storage modulus 1 X 1 0 5 to 1 X 1 0 8 P obtained from the dynamic viscoelasticity measurement of the cured body is preferably in the range of a, reservoir modulus liquid crystal display device obtained if 1 X 1 0 5 P a or, for example Ichiru when exposed to a high temperature of 6 0-8 0 Tsuyoshi Nature can be secured. Further, it is preferable that the thickness be less than 1 ⁇ 10 8 Pa, since the seal layer is rich in toughness, and the obtained liquid crystal display element is excellent in high durability.
- compositions for a liquid crystal display cell sealant include epoxy resins, polyphenol compounds, polyphenol resins and esters thereof.
- Tg strongly depends on the type and amount ratio of the epoxy resin and the type and amount ratio of the above-mentioned curing agent, curing conditions and the like.
- Shore hardness D strongly depends on the type and amount ratio of the epoxy resin, the type and amount ratio of the above-mentioned curing agent, hardening conditions, the filler amount ratio and the like.
- the elastic modulus strongly depends on the type and amount ratio of the epoxy resin, the type and amount ratio of the above-mentioned curing agent, the amount ratio of rubber, the curing conditions and the like.
- the coefficient of linear expansion strongly depends on the amount ratio of the inorganic filler and the curing conditions.
- the composition for a liquid crystal display cell sealant of the present invention the so-called B-staged composition of 90 ° CE after heat treatment at 80 ° C. for 20 minutes when the composition is applied to a thickness of 50 m.
- the mold viscosity is in the range of 5 to 1000 Pa ⁇ s.
- the 90 E type viscosity of the B-staged composition exceeds 5 Pa ⁇ s
- the generation of through bubbles can be suppressed at the time of single-wafer type hot press heat press bonding
- 100 P A value of a ⁇ s or less is preferable since a desired gap control can be performed at the time of single-wafer hot press type heat press bonding. More preferably, it is in the range of 10 to 500 Pa ⁇ s, and particularly preferably, it is in the range of 20 to 100 Pa ⁇ s.
- composition for a liquid crystal display cell sealant of the present invention preferably comprises a polyhydric phenol compound, a polyhydric phenol resin, and an esterified product thereof with respect to one equivalent of the epoxy group of the epoxy resin in order to satisfy the above properties.
- the active phenolic hydroxyl group and Z or its ester-modified group of the stiffening agent are in the range of 0.5 to 1.2 equivalents, preferably 0.5 to 1.2 equivalents.
- a curing agent is blended so as to have a range of 7 to 1.1 equivalents, particularly preferably 0.85 to 1 equivalent, and a curing accelerator comprising at least one selected from an alkyl urea derivative and a phosphazene compound. Is preferably in the range of 0.1 to 20% by mass, more preferably 0.1 to 10% by mass.
- the most preferred composition for a liquid crystal display cell sealing agent of the present invention has a softening point temperature of 0 ° C. or less, and a rubber-like polymer fine particle having an average primary particle size of 5 im or less.
- the composition contains 1 to 25% by mass of the composition.
- composition for a liquid crystal display cell sealant of the present invention As a more preferred embodiment of the composition for a liquid crystal display cell sealant of the present invention,
- a hardener comprising at least one selected from a polyhydric phenol compound, a polyhydric phenol resin and an ester thereof (hereinafter, simply referred to as a polyhydric phenol hardener) 10 to 50% by mass;
- a hardening accelerator composed of at least one selected from an alkyl urea derivative and a phosphazene compound, 0.1 to 10% by mass
- epoxy resin 2.0 to 83.8 mass%
- composition for a liquid crystal display cell sealant containing the following.
- composition for a liquid crystal display cell sealant of the present invention (7) it is further compatible with the epoxy resin and has a boiling point in the range of 150 to 220, if necessary, as long as the effect is not impaired.
- a solvent inert to a certain epoxy group (8) high-softening point acryl polymer particles having a softening point temperature of 50 ° C or more and an average primary particle size of 2 m or less (hereinafter simply referred to as High-softening point polymer-fine particles), (9) Gear (10) Conductive beads, (11) Waxes, leveling agents, pigments, dyes, plasticizers, defoaming agents, and other sealants for liquid crystal display cells containing appropriate additives Compositions are also preferably included.
- the components of the composition for a liquid crystal display cell sealant of the present invention will be specifically described below in order.
- the epoxy resin (1) used in the present invention is not particularly limited, and a mixture of a monofunctional epoxy resin and a polyfunctional epoxy resin or a single or a mixture of polyfunctional epoxy resins can be used.
- cresol nopolak One or two or more selected from the group consisting of a type epoxy resin, a bisphenol A type epoxy resin, a bisphenol F type epoxy resin, a triphenylphenol type epoxy resin, and a triphenylphenol type epoxy resin can be used.
- the mixture may be the same or different.
- the epoxy resin preferably has a weight average of 1.7 or more epoxy groups in one molecule, more preferably has a weight average of 1.9 or more epoxy groups in one molecule, and particularly preferably has a weight average of 2.
- the epoxy resin (1) when used alone or as a mixture of a plurality of types, preferably has an ionic conductivity of 1 OmSZm or less, more preferably 5 mS / m or less, more preferably ZmSZm or less, and particularly preferably within the measurement limit, thereby preventing the transfer of free ions to the liquid crystal phase when the cured composition for a liquid crystal display cell sealant of the present invention comes into contact with the liquid crystal. it can.
- the above requirements may be satisfied as an index of the total content of free ions in the mixture.
- epoxy resin (1) has a high concentration of chloride ions in water extracted with boiling water for 24 hours. It is preferable that the concentration of hydrolyzable chlorine in the epoxy resin calculated from the degree is not more than 3 OO ppm. When the concentration of hydrolyzable chlorine is 300 ppm or less, migration of chloride ions to the liquid crystal phase can be suppressed when the cured composition for a liquid crystal display cell sealant of the present invention comes into contact with liquid crystals. More preferably, it should be below 100 ppm, even more preferably below 50 ppm, most preferably below the detection limit for chloride ions.
- the epoxy resin (1) is preferably a mixture of (1-1) an epoxy resin that is liquid at room temperature (25) and (1-2) an epoxy resin that is solid at room temperature. More preferably, the mixture becomes liquid at 0 ° C. to 12 Ot :.
- the epoxy resin (1) preferably has a mass average molecular weight in terms of polystyrene of 7000 or less, as determined by gel permeation chromatography (hereinafter simply referred to as GPC), more preferably 150 to 5000. Preferably, those in the range of 350 to 3500 are most preferred.
- GPC gel permeation chromatography
- the mass average molecular weight in terms of polystyrene by GPC is 7000 or less, the E-type viscosity value of the liquid crystal display cell sealant composition after the B-stage can be reduced to 1000 P a It is preferable because compatibility with the press heating bonding method can be ensured. Further, it is preferable that the mass average molecular weight in terms of polystyrene is 150 or more, since both the Tg suitability and the B-stage suitability of the obtained cured product can be achieved.
- the content of the epoxy resin (1) is 20 to 88.9% by mass, preferably 20 to 83.8% by mass in the composition for a liquid crystal display cell sealant.
- the following epoxy resin (1) must be purified or purified in advance by a known dehydrolytic chlorine reduction method and a purification method mainly using Z or desorbable ions.
- a highly purified product can be used as appropriate.
- water purification- Examples include a solvent extraction purification method, an ultra-portion method, and a distillation purification method.
- the method for determining the type and amount of the epoxy resin (1) in the composition for a liquid crystal display cell sealing agent of the present invention is not particularly limited.
- a solvent is extracted, and the extract is separated by GPC. It is common to determine and quantify each fraction with NMR (nuclear magnetic resonance spectrum), etc., and quantify each fraction.
- Means for determining the type and amount of the epoxy resin in the liquid crystal display cell sealant, which is a cured product thereof, is not particularly limited.
- infrared absorption spectroscopy, pyrolysis-chromatography Preparative methods, wet decomposition-chromatography preparative methods, pyrolysis gas chromatography methods, pyrolysis-mass spectrometry methods, solid NMR methods, and the like can be appropriately combined.
- the monofunctional epoxy resin used in the present invention includes, for example, an aliphatic monodaricidyl ether compound, an alicyclic monoglycidyl ether compound, an aromatic monodaricidyl ether compound, an aliphatic monoglycidyl ester compound, and an aromatic monodaricidyl ester compound. And monocyclic glycidyl ester compounds, nitrogen-containing monoglycidyl ether compounds, monoglycidyl propyl polysiloxane compounds, monodaricidyl alkanes, and the like. It goes without saying that a monofunctional epoxy resin other than these may be used.
- an aliphatic monodaricidyl ether compound obtained by reacting a polyoxyalkylene monoalkyl ether having an alkyl group or an alkenyl group represented by an integer of 1 to 6 with epichlorohydrin
- aliphatic monodaricidyl ether compounds obtained by the reaction of fl fatty alcohols with epichlorohydrin.
- Polyalkylene monoalkyl ethers having an alkyl group or an alkenyl group represented by an integer having 1 to 6 carbon atoms include ethylene glycol monoalkyl ether, diethylene glycol monoalkyl ether, and triethylene glycol. Examples thereof include alcohol monoalkyl ethers, polyethylene glycol monoalkyl ethers, propylene glycol monoalkyl ethers, dipropylene glycol monoalkyl ethers, tripropylene glycol monoalkyl ethers, and polypropylene glycol monoalkyl ethers.
- Examples of the aliphatic alcohols include n-butanol, isobutanol, n-octanol, 2-ethylhexyl alcohol, dimethylolpropane monoalkyl ether, methylolpropane dialkyl ether, glycerin dialkyl ether, Examples include methylolpropane monoalkyl ester, trimethylolpropane dialkyl ester, dariserin dialkyl ester, and the like.
- an alicyclic monoglycidyl ether compound obtained by a reaction between an alicyclic alcohol having a saturated cyclic alkane group represented by an integer of 6 to 9 and epichlorohydrin, and the like.
- Examples of the alicyclic alcohol used in the reaction include cyclohexanol.
- an aromatic monodaricidyl ether compound obtained by the reaction of an aromatic alcohol with epichlorohydrin and the like can be mentioned.
- aromatic alcohol used in the reaction examples include phenol, methylphenol, ethylphenol, n-propylphenol, isopropylphenol, n-butylphenol, benzyl alcohol, t-butylphenol, xylenol and naphthol.
- an aliphatic monoglycidyl ester compound or an aromatic monodaricidyl ester compound obtained by reacting an aliphatic dicarboxylic acid monoalkyl ester or an aromatic dicarboxylic acid monoalkyl ester with epichlorohydrin, and the like.
- the polyfunctional epoxy resin is usually an epoxy resin having 2 to 6 epoxy groups on average in one molecule, but any epoxy group having a weight average of 2 to 6 epoxy groups may be used as long as the effect of the present invention is not impaired. May be used.
- Polyfunctional epoxy resins include, for example, aliphatic polyglycidyl ether compounds, aromatic polyglycidyl ether compounds, trisphenol-type polyvalent glycidyl ether compounds, hydrid quinone-type polyvalent daricidyl ether compounds, and resorcinol-type polyfunctional resins.
- Polyvalent daricidyl ether compound aliphatic polyvalent daricidyl ester compound, aromatic polyvalent glycidyl ester compound, aliphatic polyvalent daricidyl ether ester compound, aromatic polyvalent daricidyl ether ester compound, alicyclic polyvalent glycidyl Ether compound, aliphatic polyvalent glycidylamine compound, aromatic polyvalent glycidylamine compound, hydantoin type polyvalent glycidyl compound, biphenyl type polyvalent daricidyl compound, novolak type polyvalent daricidyl ether compound, epoxidation Coalescence And the like.
- Examples thereof include aliphatic polyhydric daricidyl ether compounds obtained by reacting polyoxyalkylene glycols or polyhydric alcohols with epichlorohydrin.
- polyoxyalkylene glycols used in the reaction include ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, polypropylene glycol and the like.
- polyhydric alcohol used in the reaction examples include dimethylolpropane, trimethylolpropane, spiroglycol, glycerin and the like. (Aromatic polyvalent daricidyl ether compound)
- an aromatic polyvalent daricidyl ether compound obtained by a reaction of an aromatic diol with epichlorohydrin and the like can be mentioned.
- aromatic diol used in the reaction examples include bisphenol A, bisphenol, bisphenol F, bisphenol AD, and the like.
- a trisphenol-type polyvalent glycidyl ether compound obtained by the reaction of trisphenols with epichlorohydrin can be mentioned.
- the trisphenols used in the reaction include 4,4 ', 4'-methylidene risphenol, 4,4', 4'-methylidenetris (2-methylphenol), 4,4 '-[(2-hydroxy Phenyl) methylene] bis [2,3, .6-trimethylphenol], 4,4 ', 4 "-ethylidenetrisphenol, 4,4'-[(2-hydroxyphenyl) methylene] bis [ 2-Methylphenol], 4,4 '-[(2-Hydroxyphenyl) ethylene] bis [2-methylphenol], 4,4'-[(4-Hydroxyphenyl) methylene] bis [2-methylphenol ], 4,4 '-[(4-Hydroxyphenyl) ethylene] bis [2-methylphenol], 4,4'-[(4-Hydroxyphenyl) ethylene] bis [2-methylphenol], 4,4'-[(4-Hydroxyphenyl) ethylene] bis [2-methylphenol], 4,4'
- hydroquinone-type polyvalent daricidyl ether compound obtained by a reaction between hydroquinone and epichlorohydrin and the like can be mentioned.
- a resorcinol-type polyvalent glycidyl ether compound obtained by a reaction between resorcinol and epichlorohydrin and the like can be mentioned.
- Examples thereof include aliphatic polyhydric glycidyl ester compounds obtained by the reaction of an aliphatic dicarboxylic acid represented by adipic acid and epichlorohydrin.
- an aromatic polyvalent daricidyl ester compound obtained by a reaction of an aromatic dicarboxylic acid with epichlorohydrin and the like can be mentioned.
- aromatic dicarboxylic acid used in the reaction examples include isofluoric acid, terephthalic acid, and pyromellitic acid.
- Aliphatic or aromatic polyvalent glycidyl ether compound examples thereof include aliphatic polyhydric glycidyl ether ester compounds and aromatic polyhydric glycidyl ether ester compounds obtained by reacting a hydroxydicarboxylic acid compound with epichlorohydrin.
- alicyclic polyvalent glycidyl ether compounds represented by dicyclopentene-type polyvalent glycidyl ether compounds and the like can be mentioned.
- an aliphatic polyvalent glycidylamine compound obtained by a reaction of an aliphatic diamine represented by ethylenediamine and the like with epichlorohydrin and the like can be mentioned.
- an aromatic polyvalent glycidylamine compound obtained by a reaction of an aromatic amine represented by diaminodiphenylmethane, aniline, and metaxylylenediamine with epichlorohydrin and the like can be mentioned.
- Examples thereof include hydantoin-type polyvalent daricidyl compounds obtained by reacting hydantoin and its derivative with epichlorohydrin.
- a novolak-type polyvalent daricidyl ether compound obtained by reacting a nopolak resin derived from an aromatic alcohol represented by phenol, cresol, naphthol, and formaldehyde with epichlorohydrin, and the like are exemplified.
- a modified aralkyl resin in which a phenol nucleus and / or a naphthol nucleus derived from phenol and / or naphthol and P-xylylene dichloride and a para-xylene nucleus are bonded by a methylene bond, and epichlorohydrin
- the modified nopolak-type polyvalent glycidyl ether compound obtained by the above reaction is also included in the representative examples.
- Examples include epoxidized polybutadiene and epoxidized polyisoprene. You.
- the polyphenol curing agent (2) used in the composition for a liquid crystal display cell sealant of the present invention is a curing agent composed of a polyphenol compound, a polyphenol resin and an ester thereof.
- the polyhydric phenol curing agent (2) For the polyhydric phenol curing agent (2), select and use a curing agent that has an ion conductivity of 2 mS Zm or less in an aqueous solution obtained by mixing the curing agent with 10 times the mass of pure water.
- a curing agent that has an ion conductivity of 2 mS Zm or less in an aqueous solution obtained by mixing the curing agent with 10 times the mass of pure water.
- It is preferably at most lmS / m, more preferably at most 0.2 mS / m.
- the curing agent (2) is not particularly limited, but preferably has a softening point temperature of 30 or higher, preferably 75 or higher, more preferably 75 or higher, as determined by the ring and ball method specified in JIS K7234. Select and use those that are less than 180. It is preferable to use a polyhydric phenol curing agent having a high softening point, since the hardness, Tg, viscosity, and heat resistance of the obtained liquid crystal display cell sealant can be improved. Further, the weight average molecular weight in terms of polystyrene obtained by GPC is in the range of 300 to 10,000, preferably in the range of 500 to 7500.
- the preferable blending equivalent ratio of the polyhydric phenol curing agent is, as described above, the active phenolic property of the polyhydric phenol curing agent with respect to 1 equivalent of the epoxy group of the epoxy resin.
- the hydroxyl group and Z or its ester-modifying group are in the range of 0.5 to 1.2 equivalents, preferably in the range of 0.7 to 1.1 equivalents, and particularly preferably in the range of 0.85 to 1 equivalent. 0.5 equivalents or more If less than 1.2 equivalents, manufacture a high-quality and highly durable liquid crystal display element by using the resulting liquid crystal display cell sealing compound composition or a liquid crystal cell sealing agent that is a cured product thereof.
- the polyhydric phenol curing agent (2) is not particularly limited, but includes, for example, the following (2-1-a) to (2-12-a) and / or (2-1-b) to ( 2-12-b).
- polyvalent phenol curing agent at least one or two selected from the above (2-1-a) to (2-12-a) and / or (2-1-b) to (2-12-b) Above, preferably at least one or two or more selected from (2-1-a) to (2-7-a) and Z or (2-1-b) to (2-7-b) force .
- More preferred polyhydric phenol curing agents include at least one or two or more selected from (2-1-a) to (2-2-a) and Z or (2-1-b) to (2_2_b) force. And particularly preferably at least one selected from (2-1-b) to (2-2-b).
- a 1 represents a hydrogen atom, an aromatic acyl group, or an aliphatic acyl group.
- R 1 represents a hydrogen atom, a halogen atom, a hydroxyl group, a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms.
- And represents an alkoxy group or a phenyl group having 1 to 10 carbon atoms, which may be the same or different, and
- m 1 represents an integer of 1 to 3, which may be the same or different
- the phenol novolak resin (2-1-a) is represented by a compound in which A 1 in the formula is a hydrogen atom.
- esterified phenol novolak resin (2-1 I) b) means that A 1 in the formula represented by the chemical formula (1) is a hydrogen atom, an aromatic acyl group, or an aliphatic acyl group, and all of A 1 are not hydrogen atoms. It is represented by those having a molar ratio of the acyl group in the range of 90Z10 to 0100.
- Preferred specific examples of the phenol nopolak resin (2-1-a) include, but are not particularly limited to, those obtained by addition condensation of the following phenols and formaldehyde under acidic conditions. And preferably has a softening point temperature of 50 or more, more preferably 75 or more, according to a ring and ball method.
- phenols include, for example, phenol, cresol, xylenol, octaidoquinone, methylhydroquinone, catechol, resorcinol, ethyl phenol, getyl phenol, n-propyl phenol, isopyl pyrphenol, n-butyl phenol And one or more selected from t-butylphenol, 2-ethylhexylphenol, phenylphenol and the like. More preferred are phenol and Z or cresol.
- esterified phenol novolak resin (2-1-b) include those obtained by subjecting 10 to 100 mol% of the phenolic hydroxyl groups contained in the phenol nopolak resin to aromatic and / or aliphatic acylation modification. Is mentioned.
- the polyhydric phenol curing agent (2) is the phenol nopolak resin (2-1-a) and / or the esterified phenol nopolak resin (2_l_b).
- More preferred polyhydric phenol curing agents include a phenol novolak resin (2-1_a) and an esterified phenol nopolak resin (2-1-b) in a mixing mass ratio of 1:99 to 99: 1. It is preferably in the range of 10:90 to 99: 1.
- a 2 represents a hydrogen atom, an aromatic acyl group, or an aliphatic acyl group.
- R 2 represents a hydrogen atom, a halogen atom, a hydroxyl group, a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms. , an alkoxy group or a phenylene Le group of 1 to 10 carbon atoms
- R 3 represents a hydrogen atom or a methyl group, even R 2 and R 3 are respectively the same may be different dates.
- the phenol aralkyl resin (2-2-a) is represented by a compound in which A 2 in the formula is a hydrogen atom.
- the esterified phenol aralkyl resin (2-2-1 b) is a compound represented by the chemical formula (2) in which A 2 is a hydrogen atom, an aromatic acyl group, or an aliphatic acyl group; 2 is not a hydrogen atom, and is represented by those having a hydrogen atom acyl group molar ratio in the range of 90Z10 to 0Z100.
- Preferred examples of the phenol aralkyl resin (2-2-a) include, but are not particularly limited to, the following phenols and a xylylene dichloride compound or a xylylene dialkyl ether in the presence of a Friedel-Crafts catalyst. Compounds derived from the above compound and free phenol are removed under reduced pressure to 0.01% by mass or less. More preferably, the phenol aralkyl resin has a softening point temperature in the range of 50 to 120 ° C by a ring and ball method.
- Preferred examples of the esterified phenol aralkyl resin (2-2-b) include aromatic and / or aliphatic acylation-modified 10 to 100 mol% of the phenolic hydroxyl groups contained in the phenol aralkyl resin. Things.
- Preferred examples of the phenols include, for example, phenol, cresol, xylenol, hydroquinone, methylhydroquinone, catechol, resorcin, ethyl phenol, getyl phenol, n-propyl phenol, isopropyl phenol, n-butyl phenol, t-butyl phenol, One or more selected from 2-ethylhexylphenol, fuelphenol, and the like. More preferred are phenol and / or cresol.
- the xylylene dichloride compound includes, for example, 1,2-xylylene dichloride, 1,3_xylylene dichloride, 1,4-xylylene dichloride, 2-methyl-1,3-xylylene dichloride, 3-methyl-1,4-xylylene dichloride, 2,4-dimethyl-1,3-xylylene dichloride, 2,4,5-trimethyl-1,3-xylylene dichloride, 2,3-dimethyl—1, 4-xylylene dichloride, 2,3,5_trimethyl-1,4_xylylene dichloride, 2, ethyl_1,3_xylylene dichloride, 2,4-diethyl-1,3-xylylene dichloride, 2, There are 4,5_triethyl-1,3-xylylene dichloride, 2,3-getyl-1,4-xylylene dichloride, 2,3,5-triethyl-1,4-xylylene dichloride and the like.
- Xylylenedialkyl ether compounds include, for example, HI, '-dimethoxy-P-xylene, HI, ⁇ -Jetoxy-p-xylene, a, —Dimethoxyoxy-o-xylene,, a-Jetoxy_
- o-xylene, hi, '-cimethoxyl-m-xylene and ⁇ ,'-diethoxy-1m-xylene and preferably, hi, '-dimethoxy-1-p-xylene.
- the phenol aralkyl resin (2-2-a) and Z or the esterified phenol aralkyl resin (2-2-b) may be used as the polyvalent phenol resin.
- the polyvalent phenol resin those having a mixing mass ratio of (2-2-a) and (2-2_b) in the range of 1:99 to 99: 1 are preferable, and more preferable. 10:90 to 99: 1.
- a 3 represents a hydrogen atom, an aromatic acyl group, or an aliphatic acyl group.
- R 4 and R 5 each represent a hydrogen atom, a halogen atom, a hydroxyl group, a linear, branched, or cyclic C 1-10 carbon atom.
- R 4 and R 5 may be the same or different, and m 4 and m 5 each represent an integer of 1 to 3.
- the naphtho-lnopolak resin (2_3-a) is represented by a compound in which A 3 in the formula is a hydrogen atom.
- the esterified naphthol Bruno Pollack resin (2 three to b) Formula (3) A 3 is a hydrogen atom or an aromatic Ashiru group in the formula represented, an aliphatic Ashiru group, A 3 are not all hydrogen atoms, and are represented by those in which the molar ratio of the hydrogen atom to the Zacyl group is in the range of 90/10 to 0100.
- the naphthol novolak resin (2-3-a) is not particularly limited, but preferred examples thereof include those obtained by subjecting the following naphthols and formaldehyde to addition condensation under acidic conditions. . More preferably, the naphthol nopo has a softening point temperature of 50 or more, more preferably 75 to 150 ° C, determined by the ring and ball method. It is a rack resin.
- Preferred examples of the naphthols include ⁇ -naphthol, ⁇ -naphthol, methylnaphthol, dimethylnapth] ⁇ -yl, trimethylnaphthol, and methylethylnaph! ⁇ Il, Echilnahu] ⁇ Il, Jechilnahu! ⁇ ⁇ ⁇ ⁇ ⁇ l whose whoses dos of do, of which, which which which which which which which which which which which which which which which which which which which which which which which which which which which which which which which which is which is possible-tries to have! ⁇ Il, methyl getyl naphle], ⁇ -propyl naph!
- Preferred examples of the esterified naphthol nopolak resin (2-3-b) include those obtained by subjecting 10 to 100 mol% of the naphthol hydroxyl groups of the naphthol resin to aromatic and / or aliphatic acylation modification. .
- the polyvalent phenol resin is (2-3-a) and Z or (2-3-b).
- those having a mass ratio of (2-3_a) :( 2-3-b) in the range of 1:99 to 99: 1 are preferable, and those having a mass ratio of 90:10 to 1:99 are more preferable. It is.
- a 4 represents a hydrogen atom, an aromatic acyl group, or an aliphatic acyl group.
- R 6 and R 7 represents a hydrogen atom, a halogen atom, a hydroxyl group, a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms, an alkoxy group or a phenyl group having 1 to 10 carbon atoms, and R 8 represents a hydrogen atom.
- it represents a methyl group
- R 6 , R 7 and R 8 may be the same or different.
- m 6 , m 7 and m 8 each represent an integer of 1 to 3, and may be the same or different.
- the naphthol aralkyl resin (2-4-a) is represented by a compound in which A 4 in the formula is a hydrogen atom.
- the esterified naphthol aralkyl resin (2-4-b) means that A 4 in the formula represented by the chemical formula (4) is a hydrogen atom, an aromatic acyl group, or an aliphatic acyl group; 4 are not all hydrogen atoms, and are represented by those in which the molar ratio of the hydrogen atom Z-acyl group is in the range of 90 to 10 to 100.
- Preferred examples of the naphthol aralkyl resin (2-4-a) include, but are not particularly limited to, naphthols and the xylylene dichloride compound or the xylylene dialkyl compound in the presence of a Friedel-Crafts catalyst. And those obtained by removing free naphthol under reduced pressure to 0.01% by mass or less.
- Preferred examples of the esterified naphthol aralkyl resin (2-4_b) include, for example, 100 to 100 mol% of the naphthol hydroxyl group contained in the naphthol aralkyl resin, which is aromatic and / or fatty. And those modified by acylation.
- Preferred examples of the naphthols include, for example, ⁇ -naphthol,] 3-naphthol, methylnaphthyl, dimethylnaphthol, trimethylnaphthol, methylethylnaphyl, ethylethylnaphthol, and getylnapht!
- ⁇ Yl triethyl naphthol, methyl ethynyl naphthyl, ⁇ -propyl naphthol, di- ⁇ -propyl naphl) ⁇ yl, isopropyl naphthol, diisopropyl naphthyl
- cinaphthalene, trihydroxynaphthalene and the like can be mentioned, and naphthol and Z or methyl naphthol are more preferred.
- the polyvalent phenol resin is preferably (2-141a) and Z or (2-4-b). Among them, those having a mass ratio of (2-4-a) :( 2-4_b) in the range of 1:99 to 99: 1, more preferably 90:10 to 1:99.
- a 5 represents a hydrogen atom, an aromatic acyl group, or an aliphatic acyl group.
- R 9 represents a hydrogen atom, a halogen atom, a hydroxyl group, a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms. And represents an alkoxy group or a phenyl group having 1 to 10 carbon atoms, which may be the same or different, and m 9 represents an integer of 1 to 3, which may be the same or different
- the alicyclic compound-modified phenol novolak resin (2-5-a) is represented by a compound in which A 5 in the formula is represented by a hydrogen atom.
- the esterified alicyclic compound-modified phenol nopolak resin (2-5-b) is represented by the chemical formula (5), wherein A 5 is a hydrogen atom or an aromatic or aliphatic acyl group. Wherein A 5 is not all 7 atoms and the molar ratio of hydrogen atom / acyl group is in the range of 90 ⁇ 10 to 0100.
- alicyclic compound-modified nopolak resin in which X in the formula (5) is represented by the formula (6) include, for example, a phenol and a dicyclopentene dichloride compound or a dicyclopentene compound in the presence of a Friedel Crafts catalyst. It is derived from a dialkyl ether compound, and is represented by those obtained by removing free phenol to 0.01% by mass or less under reduced pressure.
- phenols include, for example, phenol, cresol, xylenol, hydroquinone, methylhydroquinone, catechol, resorcin, ethyl phenol, getyl phenol, ⁇ -propyl phenol, isopropyl phenol, ⁇ _butyl phenol, t-butyl phenol, One or more selected from 2-ethylhexylphenol, phenylphenol, and the like. More preferred are phenol and / or cresol.
- dicyclopentene dialkyl ether compound examples include dicyclopentene dimethyl ether, dicyclopentene diethyl ether, dicyclopentene dipropyl ether, and dicyclopentene methyl methyl ether.
- esterified alicyclic compound-modified novolak resin examples include: Examples include those obtained by subjecting 10 to 100 mol% of the phenolic hydroxyl groups contained in the alicyclic compound-modified nopolak resin to aromatic and / or aliphatic acylation modification.
- X in the formula (5) is, for example, the phenols described above in the presence of a Friedel-Crafts catalyst, and optionally Derived from a cyclohexane dichloride compound or a cyclohexane dimethoxy ether compound and a cyclohexyl dialkyl ether represented by Z or cyclohexane getyl ether in the presence of the naphthols, Representatively, free phenol is removed under reduced pressure to 0.01% by mass or less.
- esterified alicyclic compound-modified nopolak resin examples include aromatic and / or aliphatic acylation-modified 10 to 100 mol% of the phenolic hydroxyl groups contained in the alicyclic compound-modified nopolak resin. Things.
- the polyvalent phenol resin is preferably (2-5-a) and Z or (2_5-b). Among them, those having a mass ratio of (2-5-a) :( 2-5-b) in the range of 1:99 to 99: 1, more preferably 90:10 to 1:99. .
- a 6 represents an elementary atom, an aromatic acyl group, or an aliphatic acyl group.
- R 1G and R 11 represents a hydrogen atom, a halogen atom, a hydroxyl group, a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms, an alkoxy group or a phenyl group having 1 to 10 carbon atoms, and R 1Q and R 11 each represent They may be the same or different.
- m 1 Q and m 11 each represent an integer of 1 to 3, and may be the same or different.
- the fl-ring compound modified naphthol nopolak resin (2-6-a) is represented by a compound in which A 6 in the formula is a hydrogen atom.
- the esterified alicyclic compound-modified naphthanol polylac resin (2-6-b) means that A 6 in the formula represented by the chemical formula (8) is a hydrogen atom, an aromatic acyl group, or an aliphatic acyl group. In this case, all of A 6 are not hydrogen atoms, and the molar ratio of the hydrogen atom to the acyl group is in the range of 90Z10 to 0Z100.
- Preferred specific examples of the alicyclic compound-modified naphthol nopolak resin in which Z in the formula (8) is represented by the formula (9) include, for example, the above-mentioned naphthols and the above-mentioned dicyclopentene in the presence of a Friedel Crafts catalyst. It is derived from a dichloride compound or the above-mentioned dicyclopentadiene dialkyl ether compound, and is represented by those obtained by removing free phenol to 0.01% by mass or less under reduced pressure.
- esterified alicyclic compound-modified naphthol novolak resin Is a preferable example in which 10 to 100 mol% of the phenolic hydroxyl groups contained in the alicyclic compound-modified resin are modified by aromatic and / or aliphatic acylation.
- Preferred specific examples of the alicyclic compound-modified naphthol novolak resin in which Z in the formula (8) is represented by the formula (10) include, for example, the naphthols described above in the presence of a Friedel Crafts catalyst, and In the presence of the above-mentioned phenols, the above-mentioned cyclohexane dichloride compound or the above-mentioned cyclohexane dimethoxy ether compound and a cyclohexyl dialkyl ether represented by Z or cyclohexane dimethyl ether are used. Induced and represented by free naphthol removed under reduced pressure to 0.01% by mass or less.
- esterified alicyclic compound-modified naphthol nopolak resin examples include aromatic and / or aliphatic acylation-modified 10 to 100 mol% of the phenolic hydroxyl groups contained in the alicyclic compound-modified resin. Things.
- a resin in which (2-6-a) and (2-6-b) are used in an arbitrary ratio is also included in the present invention, and (2-6_a): (2—
- the mass ratio of 6-b) is in the range of 1:99 to 99: 1, more preferably 90:10 to 1:99.
- Examples of the polycyclic aromatic compound-modified nopolak resin (2-7-a) include 3- to 4-rings derived from a light and heavy oil fraction distilled from a high-pressure steam catalytic cracking plant in the petroleum industry. Phenols and formaldehyde are allowed to act in the presence of an acid catalyst in the presence of a condensed polycyclic aromatic hydrocarbon compound of the formula: wherein the condensed polycyclic aromatic nucleus and the phenol nucleus are randomly tertiary formed by a methylene bond. It is represented by a condensed polycyclic aromatic compound-modified nopolak resin bonded in an original configuration.
- the esterified polycyclic aromatic compound-modified novolak resin (2-7-b) is, for example, 10 to 100 mol% of the phenolic hydroxyl group of (2-7-a). Represented by aromatic and / or aliphatic acylation modification.
- Examples of the condensed polycyclic aromatic hydrocarbon compound having 3 or 4 rings derived from the light oil fraction include, for example, the number of aromatic carbon atoms calculated from 13 C—NMR in the light and heavy oil / the number of carbon atoms in the light and heavy oil in represented by aromatic carbon fraction (fa value) 0.4 to the 0.95 range, preferably those in the 0.7 to 0.8, and, determined by 1 H- NMR of the light and heavy matter in the oil
- the aromatic ring hydrogen fraction (Ha value) expressed by the number of aromatic ring hydrogens / the number of hydrogens in light heavy oil is in the range of 0.2 to 0.8, preferably 0.35 to 0.6. Is typical.
- the polyvalent phenol resin a resin in which (2-7-a) and (2-7-b) are used in an arbitrary ratio is also included in the present invention, and among them, (2-7-a):
- the mass ratio of 2-7-b) is in the range of 1:99 to 99: 1, more preferably 90:10 to 1:99.
- the polyhydric phenol monomer (2-8-a) is not particularly limited.
- Typical examples thereof include a monomer and the following trisphenol monomer.
- Trisphenol monomers include, for example, 4,4 ', 4'-methylidenetrisphenol, 4,4', 4 "-methylidenetris (2-methylphenol), 4,4 '_ [(2-hydroxyphenyl ) Methylene] bis [2,3,6-trimethyl phenol], 4,4 ', 4 "ethylidenetrisphenol, 4,4' —
- (2_8-a) is preferably represented by the following chemical formula (11)
- a 7 represents a hydrogen atom, an aromatic acyl group, or an aliphatic acyl group.
- R 12 represents a hydrogen atom, an acyloxy group, a linear, branched or cyclic alkyl group having 1 to 10 carbon atoms, or a carbon number.
- R 13 represents hydrogen or an alkyl group having 10 or less carbon atoms, and R 12 and R 13 may be the same or different, and Y represents hydrogen or methyl.
- 111 12 and 111 13 each represent an integer of 1 to 3 and may be the same or different.
- a 7 in the formula is represented by a hydrogen atom. Be represented.
- esterified polyhydric phenol monomer those obtained by subjecting 10 to 100 mol% of the phenolic hydroxyl group contained in the above (2-8-a) to aromatic and Z or aliphatic acylation modification are preferable.
- it is represented by the chemical formula (11), wherein A 7 is a hydrogen atom, an aromatic acyl group or an aliphatic acyl group, and all A 7 are not hydrogen atoms; It is represented by those in which the molar ratio of a hydrogen atom Z acyl group is in the range of 90/10 to 0Z100.
- polyvalent phenol resin a resin in which (2-8-a) and (2-80b) are used in an arbitrary ratio is also included in the present invention, and in particular, (2-8-a): (2 The mass ratio of -8-b) is preferably in the range of 1:99 to 99: 1, more preferably 90:10 to 1:99. (2-9-a) Polyvinylphenol and (2-9-b) its esterified polyvinylphenol
- Polyvinyl phenol (2-9_a) is represented by, for example, a homopolymer of p-vinyl phenol. Although not particularly limited, those having a mass average molecular weight in terms of polystyrene by GPC in the range of 300 to 20000 are preferred, and those in the range of 500 to 10,000 are more preferably used.
- the esterified polyvinyl phenol (2-9_b) is represented by, for example, a compound obtained by subjecting 10 to 100 mol% of the phenolic hydroxyl group of (2-9-a) to aromatic and / or aliphatic acylation. You.
- the vinylphenol copolymer (2-10-a) include, for example, a binary copolymer of p-vinylphenol and another vinyl monomer copolymerizable with the copolymer, or a terpolymer of three or more. Although not particularly limited, it is represented by a copolymer or the like, but preferably has a mass average molecular weight in terms of polystyrene by GPC of 500 to 20000, more preferably 500 to 10,000.
- vinyl monomers copolymerizable with p-vinylphenol include, for example, styrene, acrylonitrile, methyl acrylate, methyl methacrylate, butyl acrylate, butyl methyl acrylate, and hydroxy acrylate.
- the esterified vinyl phenol copolymer (2-10-b) is typically a product obtained by subjecting 10 to 100 mol% of the phenolic hydroxyl group of the above (2-1-10-a) to aromatic and / or aliphatic acylation modification. Is done.
- polyisopropenyl phenol (2-11-a) examples include, for example, Examples thereof include, but are not particularly limited to, poly-P-isopropenyl phenol, etc., but those having a mass average molecular weight in terms of polystyrene by GPC of 300 to 20000 are preferable, and those having a mass average molecular weight of 500 to 10,000 are selected. It is more preferable to use.
- the esterified polyisopropenyl phenol (2-11-b) is, for example, an aromatic and / or aliphatic acylated modification of 10 to 100 mol% of the phenolic hydroxyl group of (2-11-a). Represented by things.
- polyisopropenylphenol copolymer (2-12-a) examples include, for example, a binary copolymer or a ternary copolymer of poly (p-isopropenylphenol) with another copolymerizable vinyl monomer.
- vinyl monomers copolymerizable with p-isopropenylphenol include, for example, styrene, acrylonitrile, methyl acrylate, methyl methacrylate, butyl acrylate, butyl methacrylate, and hydroxy acrylate. No.
- esterified isopropenylphenol copolymer (2-12_b) refers to a product obtained by modifying 10 to 100 mol% of the phenolic hydroxyl group of (2-12-a) with aromatic, Z or aliphatic acylation. Be represented.
- nopolak resins derived from bisphenols represented by bisphenol, bisphenol F, and bisphenol S for example, nopolak resins derived from bisphenols represented by bisphenol, bisphenol F, and bisphenol S, 4, 4 ′ — Novolak resin derived from biphenylphenols represented by biphenylphenol, etc., and phenols having a fluorene skeleton represented by 1,1-di-4-hydroxyphenylfluorene, etc. -Novolak resins derived from phenols can also be used.
- the most preferred embodiment of the polyhydric phenol curing agent (2) is one or two selected from phenol novolak resin, phenol aralkyl resin, esterified phenol novolak resin, and esterified phenol aralkyl resin. More than a species.
- the polyvalent phenol curing agent (2) is a sealing agent for liquid crystal display cells containing an epoxy resin, a polyvalent phenol curing agent, and a curing accelerator comprising at least one selected from alkyl urea derivatives and phosphazene compounds. Although it does not restrict
- the content is 10% by mass or more, the storage stability and thermosetting property of the epoxy resin composition are well-balanced, and a highly durable liquid crystal display device can be manufactured. Further, the content is preferably 65% by mass or less, because it is possible to suppress the unreacted material of the curing agent from remaining and to maintain the cross-linking density of the cured product and the seal adhesion reliability well.
- the above-described polyvalent phenol curing is performed. It is desirable to use the agent which has been manufactured through a deionization purification method in advance. Examples of the deionization purification method include free ion water extraction separation purification method, solvent extraction purification method, and ultra-portion overpurification method. Etc. are good, and there are no particular restrictions. '
- esterifying agent used when esterifying the above-mentioned phenolic hydroxyl group or naphthol hydroxyl group (hereinafter, the phenolic hydroxyl group and the naphthol hydroxyl group are sometimes collectively referred to simply as phenolic hydroxyl group)
- Any of organic carboxylic acid anhydrides, organic carboxylic acid halides and organic carboxylic acids may be used, and a convenient one may be selected according to the characteristics of the esterifying agent according to the carbon number of the ester to be derived.
- esterifying agent examples include acetic anhydride, acetyl chloride, acetyl bromide, acetic acid, propionic anhydride, propionic chloride, and propion.
- esterifying agents can be used alone or in combination of two or more.
- the amount used may be 10 mol% or more based on the hydroxyl group, and the upper limit is not particularly limited.
- the excess esterifying agent is removed after the completion of the reaction.
- it is practically 10 mol or less, preferably 5 mol or less, more preferably 3 mol or less with respect to the hydroxyl group.
- the specific reaction varies depending on the type of the esterifying agent. However, as described above, a reaction generally used for an organic carboxylic acid anhydride may be used.
- the phenolic hydroxyl group is reacted with an arbitrary amount of organic sulfonic acid anhydride to be esterified, and then the by-produced organic carboxylic acid and excess organic carboxylic acid anhydride are distilled under normal pressure and reduced pressure.
- the desired ester compound can be obtained by removing by any method such as washing with water, washing with a weak base such as carbonate, or a combination thereof. That is, in the case of a partially esterified compound, it is preferable to use an esterified compound in which an arbitrary amount, preferably 10 mol% or more, of the phenolic hydroxyl group is esterified.
- the upper limit is not particularly limited as long as it is a solvent and more than equimolar to the phenolic hydroxyl group, but the economic efficiency and the volumetric efficiency of the reaction are taken into consideration.
- the esterification is carried out using, for example, 10 times mol% or less. This amount is the same in the case of a reaction using an organic carboxylic acid described later.
- the esterification reaction temperature ranges from 60 ° C to 200 ° C, preferably from 80 ° C to 1 ° C. It is in the range of 800C, particularly preferably in the range of 1000C to 160C.
- esterification reaction time largely depends on the type of the reaction substrate and the reaction temperature, but is generally in the range of 1 hour to 25 hours.
- esterification is performed by high performance liquid chromatography or gas chromatography. It is desirable to determine the end point while tracking the disappearance of the agent and the disappearance of the hydroxyl group.
- the solvent in the esterification reaction may or may not be used. If the phenolic hydroxyl group-containing substance as the raw material is sufficiently molten at the reaction temperature and the esterifying agent is liquid, or if it is molten at the reaction temperature or dissolved in the resin and does not hinder the reaction The reaction may be performed without a solvent.
- any solvent that is inert to the reaction can be used.
- aromatic hydrocarbons such as benzene, toluene and xylene
- halogenated benzenes such as benzene, o-dichlorobenzene, N, N-dimethylformamide, and N, N-dimethylacetate.
- Aprotic polar solvents such as amide, N-methyl-2-pyrrolidone, N, N-dimethyl-2-imidazolidinone, dimethyl sulfoxide, sulfolane, diphenyl ether, tetrahydrofuran, dioxane, ethylene glycol dimethyl ether, diethylene glycol dimethyl ether And the like, and ketones such as acetone, methyl ethyl ketone, and methyl isobutyl ketone can be used alone or in any combination.
- the esterification reaction may be carried out at normal pressure, under pressure (in a autoclave) or under reduced pressure, and the atmosphere of the reaction system may be any of air, inert gas such as nitrogen, argon, helium, etc. Preferably, it is under a nitrogen atmosphere.
- the reaction when an organic carboxylic acid halide is used as the esterifying agent will be described.
- a generally used technique can be used. That is, an arbitrary amount of organic sulfonic acid halide to be esterified with the phenolic hydroxyl group may be reacted.
- the by-produced hydrogen halide is A method in which a required amount of an inactive base such as pyridine, piperazine, and triethylamine is trapped in the system in the presence of a necessary amount, and a gas is sequentially and quickly released out of the system as a gas during the reaction and installed outside the reaction system.
- the amount of the organic carboxylic acid halide to be used is, in the case of the partially esterified product, an arbitrary amount, preferably 10 mol% or more, of the phenolic hydroxyl group.
- An organic carboxylic acid halide may be used, and in the case of a completely esterified compound, an equimolar or small excess with respect to the phenolic hydroxyl group may be used, and a large excess may be used, but the economic efficiency, the volumetric efficiency of the reaction, and the Taking into account the complexity of the treatment step, esterification may be carried out in an amount of 10 moles or less, preferably 5 moles, more preferably 3 moles, of the hydroxyl group.
- reaction temperature the use of a solvent in the reaction, and the form of the reaction may be in accordance with the case of the organic carboxylic anhydride.
- an organic carboxylic acid when used as the esterifying agent, it may be substantially similar to an organic carboxylic anhydride, but an acid catalyst is required for the reaction.
- the acid catalyst examples include mineral acids such as hydrochloric acid, sulfuric acid, phosphoric acid, and polyphosphoric acid; organic sulfonic acids such as p-toluenesulfonic acid, methanesulfonic acid, ethanesulfonic acid, dimethylsulfonic acid, and getylsulfonic acid; Examples thereof include a super strong acid represented by trifluoromethane sulfonic acid, an acidic ion exchange resin represented by alkane sulfonic acid type, and a super strong acid ion exchange resin represented by perfluoro alkane sulfonic acid type.
- mineral acids such as hydrochloric acid, sulfuric acid, phosphoric acid, and polyphosphoric acid
- organic sulfonic acids such as p-toluenesulfonic acid, methanesulfonic acid, ethanesulfonic acid, dimethylsulfonic acid, and getylsulfonic acid
- examples thereof include
- the amount of the superacid used is 0.001 to 5% by mass, preferably 0.001 to 1% by mass, more preferably 0.001 to 1% by mass, based on the weight of the raw material.
- the esterification rate of the esterified product is in the range of 10 mol% to 100 mol%, preferably 50 mol% to 100 mol%, more preferably 90 mol% to 10 mol%. It is in the range of 0 mol%.
- the method for determining the content of the polyhydric phenol curing agent (2) in the sealant composition for a liquid crystal display element is not particularly limited, but includes, for example, a chromatographic preparative method, an infrared absorption spectrum method (IR Method), functional group analysis, and solid-state solution NMR (nuclear magnetic resonance spectrum).
- the method for determining the content of the polyhydric phenol curing agent (2) in the sealant for liquid crystal display cells is not particularly limited, but examples thereof include a thermal decomposition-chromatography method, a wet decomposition-chromatography method, What is necessary is just to carry out the combination of solid-state NMR method, infrared absorption spectrum method and the like as appropriate.
- composition for a liquid crystal display cell sealant of the present invention there is no problem if a known latent epoxy curing agent is used in combination with the polyvalent phenol curing agent (2) as long as the purpose of the present invention is not impaired. Absent.
- any substance capable of substantially curing the epoxy resin by heating at 50 or more can be preferably used.
- the latent epoxy curing agent include, but are not limited to, disocyandiamide and its derivatives, dihydrazide compounds, 4,4-diaminodiphenylmethane, 4,4-diaminodiphenylsulfone, imidazole compounds and epoxy resin adducts. And complexes thereof, polyamine compound-epoxy resin adducts, poly7min-diisocyanate compound adducts, boron trifluoride-amine complex, organic acid anhydrides, and the like. The above can be used.
- Preferred latent epoxy curing agents are one or more selected from dihydrazide compounds, imidazole compounds and epoxy resin adducts, complexes thereof, and organic acid anhydrides.
- dihydrazide compound examples include a saturated fatty acid skeleton having 4 to 22 carbon atoms such as succinic acid dihydrazide, adipic acid dihydrazide, sebacic acid dihydrazide, azelaic acid dihydrazide, decanic acid dihydrazide, dodecanic acid dihydrazide and the like.
- Aromatic dibasic acid dihydrazides represented by dibasic acid dihydrazides, isofluoric acid dihydrazide and the like, and dihydrazides having a valine hydantoin skeleton are exemplified.
- dihydrazide compound a dihydrazide compound derived from a dicarboxylic acid compound having 4 to 22 carbon atoms is more preferable.
- the adduct of an imidazole compound and an epoxy resin include, for example, a polyfunctional epoxy compound, an imidazole compound, and a phenol nopolak resin in an amount not exceeding twice the mass of the polyfunctional epoxy compound.
- the ratio of the epoxy group to the molecule of the imidazole compound in the polyepoxy compound is in the range of (0.8: 1) to (2.2: 1) in the range of 70 to 150.
- a curing agent exhibiting a softening point temperature can be exemplified.
- the adduct of the polyamine compound and the epoxy resin is not particularly limited, but is represented by an adduct derived from a known polyamine compound and an epoxy resin.
- a specific example is an adduct obtained by reacting an addition reaction product of an epoxy resin and a polyamine with a compound having two or more acidic hydroxyl groups.
- the compound having two or more acidic hydroxyl groups include a phenol resin, a polyphenol resin, and a polycarboxylic acid.
- An adduct of an amine compound and a diisocyanate compound is represented by an adduct obtained by reacting a known primary or secondary amine compound with a diisocyanate.
- Examples of the modified derivative of the adduct of an amine compound and a diisocyanate compound include, for example, an adduct obtained by heat-reacting N, N-dialkylaminoalkylamine, cyclic amine and diisocyanate. I can do it.
- a composition obtained by uniformly contacting the diisocyanate compound with the particle surface of the powdery adduct having a softening point of 6 O: or more and having a tertiary amino group in the adduct can be exemplified.
- organic acid anhydrides are: anhydrous anhydride, maleic anhydride, trimellitic anhydride, ethylene glycol bistrimellitate, pyromellitic anhydride, dodecyl succinic anhydride, hexahydrofuranic anhydride, Examples thereof include tetrahydrophthalic anhydride, anhydrous methylnadic acid, nadic anhydride, and dtaltaric anhydride.
- a part of the latent epoxy curing agent may be selected and used as a curing accelerator described below.
- the curing accelerator (3) used in the composition for a liquid crystal display cell sealant of the present invention is at least one selected from an alkylurea derivative and a phosphazene compound.
- alkyl urea derivatives include, for example, 3- (p-chlorophenyl) -1,1-dimethylurea, 3_ (o, p-dichlorophenyl) -1,1-dimethylurea, tolylene diisocyanate 2,4_ [bis (1,1-dimethylurea)] toluene and Z or 2,6- [bis (1,1-dimethylurea)] toluene and isophorone diisocyana derived from naphthalene and dimethylamine 3,5-di (1,1-dimethylperia) _5-methyl-2-cyclohexene-1-one, an alkyl urea derivative with an isophorone skeleton derived from mono- and dimethylamine, norbornane diisocy
- Representative examples include alkyl urine derivatives having a norpolnane skeleton derived from anatate and dimethylamine.
- the phosphazene compound is represented by a compound represented by the following chemical formula (12).
- R a to R f are a hydrogen atom, a linear, branched or cyclic Represents an alkyl group or an aryl or aralkyl group having 6 to 10 carbon atoms, which may be the same or different.
- R a to R f represented by the chemical formula (12) is a hydrogen atom, methylcarbamoyl group, Echiru group, n- propyl group, an isopropyl group, n- butyl group, sec- Bed ethyl group, tert-butyl group, 1-pentyl group, 2-pentyl group, 3-pentyl group, 2-methyl-1-butyl group, isopentyl group, tert-pentyl group, 3-methyl-2-butyl group, neopentyl group, n —Hexyl group, 4-methyl-2-pentyl group, cyclopentyl group, cyclohexyl group, 1-heptyl group, 3-heptyl group, 1-octyl group, 2-octyl group, 2-ethyl group— 1 —Examples include aliphatic hydrocarbon groups such as hexyl group, nonyl group and decyl
- aliphatic hydrocarbon groups having 1 to 6 carbon atoms such as methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group and cyclohexyl group.
- Preferred are a methyl group and an ethyl group.
- the phosphazene compound is substituted with three molecules of iminotrisamino (unsubstituted, monosubstituted, Disubstituted) It can be synthesized by reacting phosphorane. Further, if purification is necessary, it can be purified by a commonly used method such as column chromatography, distillation and recrystallization.
- the phosphazene compound thus obtained is usually a solid.
- Preferred examples of the phosphazene compound include those represented by the following chemical formula (13).
- (13) In the composition for a liquid crystal display cell sealant of the present invention, it is important to contain the curing accelerator (3) in a range of 0.1 to 20% by mass. When the content is 0.1% by mass or more, the curing activity of the curing agent (2) can be sufficiently brought out during heating and curing. When used within 20% by mass, the object of the present invention can be solved without deteriorating the storage stability of the obtained epoxy resin composition in 25.
- curing accelerator (3) for the composition for a liquid crystal display cell sealant of the present invention are 3- (p-chlorophenol) -1,1-dimethylurea, 2,4-bis [bis] (1,1-dimethylurea)] toluene, 2,6_ [bis (1, tridimethylurea)] toluene, or one selected from the phosphazene compounds represented by the chemical formula (12) And most preferably a phosphazene compound represented by the chemical formula (13).
- the curing accelerator (3) should have a total alkali metal content of 50 ppm or less, preferably 30 ppm or less, more preferably 15 ppm or less, as determined by flame elemental analysis of wet decomposition products. . By doing so, it is possible to suppress unnecessary transfer of free ions to the liquid crystal phase when the composition for a liquid crystal display cell sealant of the present invention or the liquid crystal display cell sealant as a cured product thereof comes into contact with the liquid crystal.
- the purification method for reducing the total content of metal alloy to 50 ppm or less and a known method such as a solvent extraction purification method can be applied.
- the method for determining the type and amount of the curing accelerator (3) in the composition for a liquid crystal display cell sealant of the present invention is not particularly limited.
- a method is used in which the extract is separated by GPC and specified and identified and quantified by infrared absorption spectrum or NMR (nuclear magnetic resonance spectrum), elemental analysis, and the like.
- Means for determining the type and amount of the curing accelerator in the liquid crystal display cell sealant, which is the cured product is not particularly limited.
- pyrolysis-chromatography preparative method wet decomposition What is necessary is just to carry out the chromatographic preparative method, the pyrolysis gas chromatography method, the pyrolysis-mass spectrum method, the solid-state NMR method, etc. suitably combining.
- curing accelerator (3) other curing accelerators described below may be used in combination as appropriate as long as the effect of the composition for a liquid crystal display cell sealant of the present invention is not impaired.
- Other curing accelerators include imidazole compounds and salts thereof, tris-dimethylaminomethylphenol salts, 1,8-diazabicyclo (5,4,0) indene-17 salts, 1,8-diazabicyclo (5,4) , 0) pendene-7 salt, 1,5-diazabicyclo (4,3,0) -nonene monopentasalt, 6-dibutylamino-1, 8-diazabicyclo (5,4,0) pendene-7 selected from salts One or two or more of them.
- imidazole compound are not particularly limited, but may be represented by, for example, 2-cyanoethyl-2-ethyl-4-methylimidazole.
- imidazole salts include, for example, isocyanuric acid adducts of imidazole compounds, polyvalent carboxylic acid adducts of imidazole compounds, and the like.
- trisdimethylaminomethylphenol salt examples include trisdimethylaminomethylphenoloctylate, trisdimethylaminomethylphenololeate, and trisdimethylaminomethylphenolformate.
- DBU 1,8-diazabicyclo (5,4,0) ndene-7 salt
- DBU Representative examples thereof include a DBU phenol salt, a DBU polyvalent phenol compound salt, a DBU polyphenol salt, a DBU octylate, a DBU oleate, and a DBU formate.
- DBN salt 1,5-Diazabicyclo (4,3,0) -nonene monopentasalt
- DBN salt includes, for example, DBN phenol salt, DBN polyvalent phenol compound salt, DBN polyphenol salt, DBN octylic acid Salt, DBN oleate, DBN formate, DBN paratoluene sulfonate are typical examples.
- 6-Dibutylamino-1,8-diazabicyclo (5,4,0) -ndecene 17 salt includes, for example, DB phenol salt, DB polyvalent phenol compound salt, DB polyphenol Salt, DB octylate, DB oleate, DB formate, DB paratoluenesulfonate are typical examples.
- a softening point temperature determined by T 0 rsinal Braid Analyzer (hereinafter simply referred to as TBA) called a torsional pendulum method.
- Rubber-like polymer fine particles with a softening point temperature of 0 ° C or less and an average primary particle diameter of 5 m or less determined by electron microscopic observation (4) (hereinafter simply referred to as rubber-like polymer fine particles) ) Is preferably contained in an amount of 1 to 25% by mass.
- the average particle diameter of the primary particles of the rubber-like polymer fine particles is preferably 0.01 to 5 m, more preferably 0.05 to 2 m.
- the proportion of the rubber-like polymer fine particles (4) in the composition for a liquid crystal display cell sealing agent is more preferably from 1 to 20% by mass, particularly preferably from 1 to 15% by mass.
- the softening point temperature of the rubber-like polymer fine particles (4) is 0 or less, the adhesion reliability at low temperature tends to be further improved, which is preferable. Further, by setting the primary particle diameter of the rubber-like polymer fine particles (4) to 5 m or less, the gap of the liquid crystal cell can be reduced, the amount of expensive liquid crystal used can be suppressed, and the liquid crystal can be suppressed. The display response speed can also be improved.
- rubber-like polymer fine particles (4) include silicon rubber fine particles having a softening point temperature of 130 or less and a primary particle size in the range of 0.01 to 2, and Z or acryl rubber fine particles or polyolefin. More preferably, the rubber-like polymer fine particles (4) are cross-linkable rubber particles.
- the rubber-like polymer fine particles (4) have a softening point temperature of 0 or less, the following known rubber-like polymers can be appropriately selected and used.
- acrylic rubber rubber polymer silicone rubber rubber polymer, conjugated rubber rubber polymer, olefin rubber rubber polymer, polyester rubber rubber polymer, urethane rubber rubber polymer, composite rubber.
- a rubber-like polymer having a functional group that reacts with an epoxy group can be exemplified.
- those having a functional group that reacts with an epoxy group are preferable.
- the rubber-like polymer fine particles (4) used in the composition for a liquid crystal display cell sealant can be used alone or as a mixture of two or more of them.
- acryl rubber-based rubber-like polymer fine particles include, for example, particles obtained by drying a core shell type emulsion whose core portion is made of acrylic rubber, and non-aqueous dispersion polymerization of an acrylic monomer in an epoxy resin. After separately preparing a resin composition, and further, an acrylic rubber polymer solution having a functional group reactive with an epoxy group introduced therein, and then pouring or dropping it into the epoxy resin, mechanically mixing and removing the solvent or There is a resin composition in which acryl rubber fine particles are stably dispersed in an epoxy resin by grafting.
- silicon rubber-based rubber-like polymer fine particles include, for example, powdery silicon rubber fine particles, and an epoxy resin having a acrylate group at one end capable of introducing a double bond and reacting with the double bond.
- an epoxy resin having a acrylate group at one end capable of introducing a double bond and reacting with the double bond.
- conjugated rubber-based rubber-like polymer fine particles include, for example, a polymerized or copolymerized monomer such as 1,3-butadiene, 1,3-pentanedene, isoprene, 1,3-hexadiene, and chloroprene.
- conjugated rubber-like polymer fine particles obtained by polymerization which may be already known ones and are not particularly limited. Commercial products can be used as they are.
- More specific examples of conjugated diene rubbers include copolymers of butadiene and acrylonitrile, copolymers of butadiene and acrylonitrile having a terminal lipoxyl group, and amino groups at the terminal There is a copolymer of bushugen and acrylonitrile.
- olefin rubber-based rubber-like polymer fine particles include single amorphous polymers such as ethylene, propylene, 1-butene, 2-butene, and isobutene.
- examples thereof include copolymers with other copolymerizable monomers, fine particles made of Yuichi Polymer, and compositions thereof.
- a good example is a resin composition obtained by dehydrating a commercially available product such as an olefin rubber latex in an epoxy resin to stabilize the dispersion of the olefin rubber in the epoxy resin.
- the polyester rubber-based rubber-like polymer fine particles are fine particles made of a rubber-like polymer having a polymer skeleton containing a polyester bond, and are not particularly limited.
- Specific examples of the polyester rubber include, for example, at least one diol component selected from liquid polysiloxane diol, liquid polyolefin diol, polypropylene glycol, polybutylene glycol, and the like, and if necessary, triol or more.
- examples thereof include a low softening point polyester resin using an acid anhydride instead of an acid, or a low softening point polyester resin derived from a hydroxy polycarboxylic acid or the like.
- the urethane rubber-based rubber-like polymer fine particles are fine particles made of a rubber-like polymer having a rubber-like polymer skeleton containing a urethane bond and a Z or urea bond, and are not particularly limited.
- Specific examples of urethane rubber include, for example, a diol component composed of at least one selected from liquid polysiloxane diol, liquid polyolefin diol, polypropylene glycol, polybutylene glycol, and, if necessary, triol or more. Hexamethylene diisocyanate, isophorone diisocyanate, tolylene diisocyanate, diphenylmethane diisocyanate, norpornandiisocyanate, etc.
- Rubber-like polyurethane obtained by reacting with a known diisocyanate compound, for example, liquid polysiloxane diamine, liquid polyolefin diene, etc. Isocyanate, diphenylmethane diisocyanate, norbornane diamine, and at least one long-chain diamine component selected from amine, polypropyleneglycoldiamine, etc., and, if necessary, a triamine or higher polyamine compound. Examples thereof include a rubber-like polyurethane obtained by reacting with a known diisocyanate compound represented by isocyanate or the like.
- the composite rubber particles include, for example, graft polymers and / or block polymers or core-shell polymers, multi-layer polymers, and the like of the above-mentioned acrylic, silicon, conjugated gen, olefin, polyester, and urethane-based two or more types. Can be exemplified.
- a functional group that reacts with an epoxy group is introduced into the acrylic, silicon, conjugated gen, olefin, polyester, or urethane particles described above. Is a typical example.
- the repeating structure derived from the monomer having a functional group that reacts with the epoxy group has a weight ratio of 0.1 to 25 in the rubber-like polymer. It is preferable that the content is mass%.
- the adhesiveness of the composition for a liquid crystal display cell sealant obtained by adjusting the content of the repeating structure derived from a monomer having a functional group that reacts with an epoxy group to 0.1% by mass or more and 25% by mass or less is obtained. Significantly improved.
- Examples of the functional group capable of reacting with the epoxy group include a mercapto group, an amino group, an imino group, a carboxyl group, an acid anhydride group, an epoxy group, and a hydroxyl group.
- the rubbery polymer contains at least one of these functional groups in a range from 0.01 to 2 Preferably, 5% by mass is introduced, and more preferably, 0.1 to 10% by mass is introduced.
- the rubber-like polymer fine particles (4) maintain the shape as particles in the epoxy resin.
- Means for discriminating the presence of rubber-like polymer fine particles (4) as particles in the epoxy resin are not particularly limited, but, for example, a mixture of a non-turbid epoxy resin and rubber-like polymer fine particles.
- a method of sensitizing the fractured surface of the microscopic section of the cured product to staining with osmium acid and observing it with a scanning electron microscope to confirm the presence of particles can be employed as appropriate.
- the rubber-like polymer fine particles (4) may or may not be grafted in advance with the epoxy resin (1).
- the method for grasping the type, amount and particle size of the rubber-like polymer fine particles (4) in the composition for a liquid crystal display cell sealant and the sealant for a liquid crystal display cell of the present invention there is no particular limitation on the method for grasping the type, amount and particle size of the rubber-like polymer fine particles (4) in the composition for a liquid crystal display cell sealant and the sealant for a liquid crystal display cell of the present invention.
- a method of analyzing a scanning electron microscope image (SEM) of a fragment of the cured product, or a method of sensitizing the fragment with osmic acid staining and then confirming a particle image with a transmission electron microscope (TEM) A method for identifying and quantifying by comparing with an elemental analysis image simultaneously with SEM observation; A method to determine the layer by measuring the infrared absorption spectrum of the micro layer, a method to identify and determine the gas components generated by decomposition by irradiating the micro layer with heat rays, and a mass by converting from the
- any one can be used as long as it can be used as an inorganic filler in the field of ordinary electronic materials.
- Preferred inorganic fillers (5) are high-purity silica and / or high-purity alumina or titanium oxide.
- high purity silica having a total alkali metal content of 50 ppm or less, more preferably 30 ppm or less, particularly preferably 15 pm or less, as determined by atomic absorption spectrometry of wet decomposition products And Z or high-purity alumina or titanium oxide.
- the purification method for reducing the total alkali metal content to 50 ppm or less can be obtained at the stage of the production raw material, and it can be obtained by a purification method such as an ion exchange purification method. You.
- 8 nm wavelength of a laser method particle size measurement device by 9 9 wt% particles on the weight integration curve determined diameter value (d 9 9) is 5 / m or less those in the preferred, and mass integration curve on 5 0 wt% values shown are weight average particle size value (d 5 Q) to zero. 0 0 5 to which it is more preferably in the range of 1 m.
- d 9 9 there is further improved preferred dimensional stability of formic Yap width used when the liquid crystal panel of inorganic filler is less than 5 m.
- the inorganic filler (5) is used as needed, but the preferable content is 5 to 45% by mass.
- the content is 5% by mass or more, the workability of screen printing or dispenser application can be improved, and when the content is 45% by mass or less, the fluidity of the composition can be ensured, and blurring or clogging of the dispenser frequently occurs during screen printing. It is preferable because the coating operation can be performed without any problems.
- the range is preferably from 10 to 40% by mass.
- the inorganic filler (5) is not particularly limited, but it is preferable to use it after being graft-modified with an epoxy resin (1) and a silane coupling agent (6) in advance.
- a part or all of the inorganic filler (5) may be graft modified.
- the grafting ratio is represented by the mass increase rate obtained by the repeated solvent washing method.
- the amount of the epoxy resin (1) and the silane coupling agent (6) per 100 parts by mass of the inorganic filler (5) is used. It is preferable that 1 to 50 parts by mass of one or both of them is chemically bonded.
- the method for determining the type and amount of the inorganic filler (5) in the composition for a liquid crystal display cell sealant of the present invention is not particularly limited.
- a filtration fractionation method, an X-ray diffraction spectrum method , Elemental analysis, heat incineration residue method, wet pyrolysis-atomic absorption method, electron microscopy image analysis method, etc. may be appropriately combined.
- the means for determining the type and amount of the inorganic filler in the liquid crystal display cell sealant, which is the cured product is not particularly limited.
- Method, heat incineration residue method, wet pyrolysis-atomic absorption method, electron microscopic observation image analysis method, etc. may be combined as appropriate, and there is no particular limitation.
- Silane coupling agent (6) is used as necessary, and the preferable content thereof is 0.1 to 5% by mass. Adhesion to a glass substrate can be ensured by using 0.1% by mass or more, and even more than 5% by mass does not bring out any more remarkable effects. Preferably, it is 0.5 to 3% by mass.
- silane coupling agent (6) any of those usually used can be used, and examples thereof include trialkoxysilane compounds and methyldialkoxysilane compounds.
- the method for determining the type and amount of the silane coupling agent (6) in the composition for a liquid crystal display cell sealant of the present invention is not particularly limited. For example, a solvent extraction preparative method, NMR spectrum identification Method, a gas chromatography method, a distillation fractionation method, or the like may be appropriately combined.
- Means for determining the type and amount of the silane coupling agent in the liquid crystal display cell sealant, which is a cured product thereof, are not particularly limited.
- pyrolysis gas chromatographic mass spectrometry, solid NM It can be performed by appropriately combining the R method and the like, and there is no particular limitation.
- an epoxy group having a boiling point in the range of 150 to 220 which is further compatible with the epoxy resin, relative to 100 parts by mass of the composition.
- the solvent (7) inert to the solvent may be contained in the range of 1 to 25 parts by mass.
- the suitability for screen printing and the wettability to the adherend can be improved.
- a high-boiling solvent having a boiling point in the range of 160 to 20 Ot is used.
- the solvent (7) include, but are not particularly limited to, ketone solvents such as cyclohexanone, ether solvents, and acetate solvents.
- ether solvent examples include ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol monopropyl ether, ethylene glycol monobutyl ether, ethylene glycol monophenyl ether, ethylene glycol dimethyl ether, and ethylene glycol monoethyl ether.
- Tyl ether ethylene glycol dipropyl ether, ethylene glycol dibutyl ether, ethylene glycol diphenyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monopropyl ether, diethylene glycol monobutyl ether, diethylene glycol Examples thereof include ethylene glycol monophenyl ether, ethylene glycol dimethyl ether, diethylene glycol dimethyl ether, diethylene glycol dipropyl ether, diethylene glycol dibutyl ether, and diethylene glycol diphenyl ether.
- Preferred examples of the acetate solvent include ethylene glycol monoacetate, ethylene glycol monomethyl ether acetate, ethylene glycol monoethyl ether acetate, ethylene glycol mo / propyl ether acetate, ethylene glycol monobutyl ether acetate, and ethylene glycol.
- Particularly preferred solvents (7) include ethylene glycol monobutyl ether, ethylene glycol monomethyl ether acetate, diethylene glycol monomethyl ether, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, and propylene glycol monoethyl ether. It is at least one selected from acetate and propylene glycol diacetate.
- the method of determining the type of solvent and the amount ratio of the solvent in the composition for a liquid crystal display cell sealant For example, a drying loss method, a gas chromatography method, a distillation method, a gas mass method, and infrared absorption. What is necessary is just to carry out combining the spectrum method, the NMR method, etc. suitably.
- High softening point polymer fine particles having a softening point temperature of 50 ° C or more and a primary average particle diameter of primary particles of 2 ⁇ m or less
- the composition 100 High softening point polymer fine particles (8) may be contained in the range of 0.1 to 25 parts by mass with respect to parts by mass. By using more than 0.1 parts by mass together, it is possible to further ensure the seal bonding without the occurrence of penetration bubbles and bleeding in the primary bonding process of the vacuum sheet heat press or rigid sheet heat press. It is preferable to use 25% by mass or less, since the gap operability can be sufficiently ensured.
- High softening point polymer fine particles (8) are high softening point polymers with a softening point temperature of 50 or more as determined from TB A and an average primary particle diameter of 2 m or less observed by electron microscope.
- Acrylic polymer fine particles (8) (hereinafter sometimes simply referred to as high softening point polymer fine particles).
- the average particle diameter of the primary particles of the high softening point acrylic polymer fine particles (8) is preferably in the range of 0.01 to 1 m, and more preferably in the range of 0.2 to 0.5 m.
- the high softening point acrylic polymer fine particles (8) can be used in either a crosslinked type or a non-crosslinked type, but a crosslinked type is preferable, and a high softening point acrylic polymer fine particle having a finely crosslinked structure is more preferable.
- the acryl polymer particles having a high softening point having a finely crosslinked structure can be obtained by adjusting the amount of the crosslinkable monomer in the range of 0.1 to 5% by mass, preferably 1 to 3% by mass, in the production of the polymer. Can be manufactured.
- One of the indicators of the degree of microcrosslinking is the gel fraction. This is accomplished by dispersing 10 g of high softening point polymer fine particles in 50 g of methyl carbitol solvent, stirring at 25 for 1 hour, filtering, and determining the filtrate amount and the polymer content (dissolved amount) in the filtrate.
- the gel fraction index is preferably in the range of 0 to 50%, more preferably 0 to 5%.
- the high-softening point acrylyl polymer fine particles preferably have a wetting index calculated from the chemical structural formula in the range of 9 to 11, more preferably 9.3 to 10.5.
- the high softening point acrylic polymer fine particles (8) include, for example, a finely crosslinked polymethacrylic acid methyl ester-based polymer obtained by copolymerizing 0.1 to 5% by mass of a crosslinkable monomer, and an ionomer. Examples thereof include a polymethacrylic acid methyl ester polymer having a structure in the range of 0.1 to 5% by mass.
- the high softening point acrylic polymer fine particles it is more preferable that one type of functional group such as an epoxy group, an amino group, an imino group, a mercapto group, and a hydroxyl group is introduced into the particle surface.
- it has a softening point temperature of 60 to 150 and a primary particle size in the range of 0.01 to 1 / m.
- the rubber-like polymer fine particles (4) and the high softening point acrylic polymer-fine particles (8) may be previously compounded.
- (4) and (8) are core-shell type composite fine particles (A) in which the fine polymer particles (4) form a core phase and the high softening point acrylic polymer fine particles (8) form a shell phase.
- a preferred example is an embodiment in which the core-shell type composite fine particles (B) having the high softening point acrylic polymer fine particles (8) as the core phase and the rubber-like polymer fine particles (4) as the shell phase are used.
- the former embodiment using the core-shell type composite fine particles (A) is preferable.
- the core: shell mass ratio is desirably in the range of (1: 0.3) to (1: 2). .
- composition for a liquid crystal display cell sealant of the present invention a composition in which the above-mentioned epoxy resin composition further contains a gap control agent (9) is a more preferred embodiment. Gap-out control agent (9) is used to reduce the gap width of the liquid crystal display element.
- the gap-out control agent (9) is appropriately contained in a proportion of 0.1 to 5 parts by mass with respect to 100 parts by mass of the composition for a liquid crystal display cell sealant of the present invention, if necessary. . More preferably, it is in the range of 0.5 to 2.5 parts by mass.
- Examples of the gap control agent (9) include, for example, spheres, rugby ball-shaped particles, rod-shaped fibers, etc., which are not deformed, dissolved, or swollen by an epoxy resin (1) or a solvent (7) used as required.
- Examples include inorganic particles or thermosetting polymer particles.
- Examples of the inorganic particles of the gap formation controlling agent (9) include spherical silica particles, spherical alumina particles, short glass fibers, short metal fibers, and metal powders.
- Examples of the organic gap control agent (9) include thermosetting polystyrene spherical particles, phenol resin-based thermosetting particles, and benzoguanamine-based thermosetting particles.
- Inorganic particles are a particularly preferred example because they can control the gap accuracy with high accuracy.
- the method for determining the type of the gap control agent in the composition for a liquid crystal display cell sealant or the sealant for a liquid crystal display cell or the quantitative ratio thereof is not particularly limited. Observation image analysis method, separation filtration method, thermal decomposition gas chromatography method, heating residue X-ray diffraction method, elemental analysis method, etc. (10) Conductive beads
- the conductive beads (1) are added to 100 parts by mass of the epoxy resin composition for the purpose of simultaneously imparting an anisotropic conductivity function together with a sealing function.
- 0) is also included in a preferred embodiment as a composition containing 1 to 15 parts by mass in combination.
- an anisotropic conductivity function can be provided.
- the use of 1 part by mass or more is preferable because a vertical conductivity function can be imparted, and when the amount is less than 15 parts by mass, insulation properties between both lateral (left and right) electrodes can be secured.
- the conductive beads (10) are not particularly limited, but for example, have an average particle diameter of 3 to 10 m, a maximum particle diameter of 10 im or less, and a minimum particle diameter of 0.1 m. The above conductive beads are preferred.
- the kind of the conductive beads is not particularly limited, but specific examples are shown below.
- noble metal particles, noble metal alloy particles, base metal particles, base metal alloy particles, other metal-coated organic particles, and metal-coated insulating inorganic particles may be used.
- gold, silver, platinum and the like can be exemplified.
- silver-copper alloy gold-copper alloy, gold-silver alloy, platinum-silver alloy, gold-platinum alloy, gold-nickel alloy, silver-nickel alloy, etc.
- silver-copper alloy gold-copper alloy
- gold-silver alloy gold-silver alloy
- platinum-silver alloy platinum-silver alloy
- gold-platinum alloy gold-nickel alloy
- silver-nickel alloy etc.
- copper, nickel, tin, tungsten and the like can be exemplified.
- a copper-nickel alloy, a copper-tin alloy, a solder and the like can be exemplified.
- a typical example is obtained by forming the conductive metal film on organic polymer particles represented by polystyrene / polymethyl methacrylate.
- organic polymer particles represented by polystyrene / polymethyl methacrylate.
- the product name “Micropearl AU Series” is known from Sekisui Fine Chemical Co., Ltd. and can be used favorably.
- a typical example is formed by forming the conductive metal film on highly insulating inorganic particles represented by mica or glass beads.
- the conductive beads (10) have an organic polymer as a core, and may be made of gold, silver, gold, copper alloy, silver-copper alloy, nickel, or an alloy thereof. It is preferable to use conductive beads made of at least one selected metal-coated phase.
- the average particle size of the conductive beads is preferably in the above range. If the average particle size is 1 m or less, it is difficult to obtain good vertical conduction characteristics even with conductive particles between the electrodes. If the average particle diameter or the maximum particle diameter exceeds 10 m, a short circuit is likely to occur.
- the method for determining the type of conductive beads (conductive particles) in the composition for a liquid crystal display cell sealant or the sealant for a liquid crystal display cell or the ratio thereof is not particularly limited. TEM or SEM image analysis methods, filtration fractionation methods, and the like can be combined as appropriate. Other additives
- composition for a liquid crystal display cell sealant of the present invention if necessary, a wax, a wax, a pigment, a dye, a plasticizer, and an antifoaming agent can be used.
- Wax (11) can be used for the main purpose of improving performance and further improving low water absorption.
- the wax (11) is preferably used in an amount of 0.1 to 5% by mass of the wax based on 100 parts by mass of the composition for a liquid crystal display cell sealant of the present invention.
- the cured product can be used in a high temperature and high humidity environment with a relative humidity of 95% or more.
- 8 Ot The moisture permeability of the cured product can be further reduced. Along with this, it becomes possible to manufacture highly durable liquid crystal display cells.
- the wax (11) is not particularly limited, and any wax can be used.
- any wax can be used.
- animal-based natural waxes, plant-based natural waxes, mineral-based natural waxes, petroleum-based waxes, synthetic hydrocarbon-based waxes, modified waxes, hydrogenated waxes, and the like can be given.
- waxes having a melting point of 70 to 150 ° C. are preferred, and carnano wax, microcrystalline phosphorus wax, Fischer-Tropx wax, and modified Fischer-Tropsch wax are more preferred.
- the wax exists as independent primary particles in a state before the liquid crystal display cell sealant composition is cured.
- the average particle diameter of the primary particles by electron microscope or optical microscope observation is preferably in the range of 0.01 to 5 zm, and more preferably in the range of 0.01 to 3 / m. Is more preferred.
- beeswax whale wax, shellac wax and the like can be mentioned.
- carnauba wax olicury wax, candelilla wax, wood wax, cane wax and the like can be mentioned.
- candelilla wax olicury wax
- wood wax candelilla wax
- cane wax can be mentioned.
- montan wax for example, montan wax, ozokerite, ceresin and the like can be mentioned.
- paraffin wax microcrystalline wax and the like can be mentioned.
- Examples include Fischer-Tropsch wax and its derivatives, polyethylene wax and its derivatives, polypropylene wax and its derivatives, and the like.
- an acidified wax for example, there may be mentioned an acidified wax, a montan wax, an acid-modified wax and the like.
- composition for liquid crystal display cell sealant comprises the steps of (1) epoxy resin, (2) polyvalent phenol curing agent, (3) alkyl urea derivative and phosphazene compound.
- a hardening accelerator comprising at least one selected from the group consisting of: (4) rubber-like polymer fine particles having a softening point temperature of 0 or lower and an average primary particle size of 5 / zm or lower; Inorganic filler, (6) silane coupling agent, (7) solvent, (8) high softening point polymer fine particles, (9) gap control agent, (10) conductive beads, (11) wax, Other additives such as a ring agent, a pigment, a dye, a plasticizer, and an antifoaming agent may be appropriately added and mixed, and there is no particular limitation.
- the mixing may be performed using a known machine such as a double-arm stirrer, a roll kneader, a twin-screw extruder, and the like. Be transported. Physical properties of composition for liquid crystal display cell sealant
- the viscosity of the composition for a liquid crystal display cell sealant before curing is not particularly limited, and is determined by a Brookfield viscometer (B-type viscometer) or an E-type viscometer. 25: Viscosity of 1 to 1000 Pa ⁇ s It is preferably in the range of 5 to 500 Pa's, and most preferably in the range of 10 to 200 Pa * s.
- the composition for a sealant of a liquid crystal display cell of the present invention is manufactured by adjusting the viscosity in the above range in advance by a method such as heat curing.
- the ratio of the 1 rpm viscosity value obtained from the shear speed of 1 rotation per minute and the 10 rpm viscosity value at a shear speed of 10 rotations when the rotor number of the B-type viscometer or the E-type viscometer is the same.
- the thixotropic index represented by (1 rpm viscosity value 10 rpm viscosity value) is not particularly limited, but is preferably in the range of 1 to 3. Manufacturing method of liquid crystal display element
- the method for producing a liquid crystal display element of the present invention is a method for producing a liquid crystal display element using TN liquid crystal, STN liquid crystal, ferroelectric liquid crystal, and antiferroelectric liquid crystal.
- another method of manufacturing a liquid crystal display element of the present invention is a method for manufacturing a liquid crystal display element using TN liquid crystal, STN liquid crystal, ferroelectric liquid crystal, and antiferroelectric liquid crystal.
- the composition is printed or dispensed on the bonding seal components of a glass or plastic liquid crystal cell substrate, and pressed at a temperature of 50 to 120 ° C. After curing, the other substrate is overlapped so that the liquid crystal is dropped and air is not trapped, aligned, temporarily fixed, and then heat-pressed at 80 to 150 ° C. After treatment, the substrate is bonded and fixed to a uniform thickness in the range of 3 to 7 m, and then the breathing holes are sealed with a photocurable liquid crystal sealant composition or a two-liquid crystal sealant composition. It is a manufacturing method characterized by the above-mentioned.
- the pre-curing is required in advance.
- a solvent content of 100 at least 95% by mass or more can be desolvated, and a heating and drying temperature below the thermal activation temperature of the contained curing agent is selected.
- 70 to 120 is preferable.
- the precuring temperature is in the range of 8 Ot: to 100, and the heat treatment time is 30 to 5 minutes. The higher the temperature, the shorter the drying time. Solvent removal is possible even with a pre-cured resin exceeding 120, but care must be taken because the precision of the gap width tends to decrease as the curing reaction proceeds.
- liquid crystal cell substrate to be used examples include a glass substrate and a plastic substrate.
- these substrate groups include a transparent electrode represented by indium oxide, an alignment film represented by polyimide, etc., and other inorganic ion shielding films, etc., which are applied to necessary parts.
- the same plastic substrate is used.
- the method for applying the composition for a liquid crystal display cell sealant to a substrate is not particularly limited, and may be, for example, a screen printing application method or a dispenser application method. Also, after application, after pre-drying as necessary, bonding and bonding by heat and pressure bonding are used.
- the heat curing conditions at this time are not particularly limited, but may be from 100 to 2 It is desirable that the heating time is 24 to 0.5 hours at 100 ° C., preferably 24 to 1 hour at 110 to 180 ° C.
- the single-sheet heat press means a heat press machine of a specification for joining one set at a time
- a single-sheet heat press machine capable of applying heat under vacuum is a vacuum single-sheet heat press and an atmospheric pressure.
- Liquid crystal display device
- the liquid crystal display element of the present invention means that the composition for a liquid crystal display cell sealant of the present invention is printed or dispensed on a bonding seal constituting portion of a glass or plastic liquid crystal cell substrate, and 70 to 12 Ot : After pre-curing, the other uncoated object After positioning with a pair with the same substrate, the substrate is heat-pressed at 100 to 200, and the substrate is A liquid crystal display element obtained by bonding and fixing to a uniform thickness in the range of 7, a liquid crystal material is injected into the cell, and the injection hole is sealed with a two-liquid type liquid crystal sealant composition, or The composition for a liquid crystal display cell sealant of the present invention is printed or dispensed on the bonding seal constituent part of a glass or plastic liquid crystal cell substrate, and after pre-curing at a temperature of 50 to 120, the other is used.
- the liquid crystal is dropped and bonded so as not to trap the air.
- the substrate is heat-pressed at 80 to 150, and the substrate is homogenized in the range of 3 to 7 ⁇ .
- the breathing hole is obtained by sealing with a photocurable liquid crystal sealing compound composition or a two-liquid type liquid crystal sealing compound composition.
- the photocurable liquid crystal sealant composition is not particularly limited, for example, a composition containing a polyvalent acrylate resin and a photoinitiator, and a composition containing an epoxy resin and an ultraviolet photoinitiator.
- the two-liquid crystal sealant composition for example, a two-liquid crystal sealant composition comprising an epoxy resin and a polyamide curing agent, and a two-liquid crystal liquid comprising an epoxy resin and a polythiol curing agent
- a sealant composition for example, a two-liquid crystal sealant composition comprising an epoxy resin and a polyamide curing agent, and a two-liquid crystal liquid comprising an epoxy resin and a polythiol curing agent
- examples thereof include a sealant composition, a two-liquid crystal sealant composition comprising an epoxy resin and a polymer curing agent, and the like.
- the liquid crystal material is not limited, and for example, a nematic liquid crystal or a ferroelectric liquid crystal can be suitably used.
- liquid crystal display device examples include a TN (Twisted Nematic) liquid crystal proposed by M. Schadt and W. He1frich. Element or STN (Super Twisted Nematic) liquid crystal element or Clark (N.
- TN Transmission Nematic
- STN Super Twisted Nematic
- Preferred examples include a ferroelectric liquid crystal element proposed by A. Clark and Lagawell (ST Lagerwa 11), and a liquid crystal display element in which a thin film transistor (TFT) is provided in each pixel.
- TFT thin film transistor
- B-type viscosity value is set to 100, expressed as the change rate of the same viscosity value after _10 / 30 days .
- composition for a liquid crystal display cell sealing agent hermetically sealed and stored in a polyethylene container below the freezing point was taken out and returned to room temperature 25 over 2 hours.
- the 25t: B-type viscosity value at that time is defined as 100, and the viscosity change rate after standing at 25 for 12 hours is shown.
- the liquid crystal sealant composition of each example was coated on a smooth release film to a thickness of 10 to 50 ⁇ , and 0.6 parts of the B-staged composition mass obtained under the B-stage condition of each example was removed. Samples are collected quickly, and the temperature is raised at a constant speed from 40 to 12 minutes with an E-type viscometer (cone cup viscometer) to 120 (temperature) — (0.5 rpm rotational viscosity). The curve was determined. The 90 ° C viscosity was determined from the viscosity curve.
- Viscosity is 301 ⁇ l O O OPa 's
- the liquid crystal sealant composition of each example is applied to a smooth release film to a thickness of 70 to 120, heat-treated at 8 Ot: for 30 minutes, and further heat-cured at 150 ° C for 90 minutes to obtain a cured product.
- a membrane is cut out and subjected to a moisture permeability test according to JIS-Z-0208, a moisture permeability test method for moisture-proof packaging materials of Japanese Industrial Standards (JIS), at 60 and 80 ° C for 24 hours. The amount of water vapor per 100 m of the wet film thickness (unit: g / m 2 ⁇ 24 hrs) was determined.
- the moisture permeability is less than 35 g / m 2 ⁇ 24 hrs, and the composition for liquid crystal display cell sealant is particularly excellent in low moisture permeability.
- liquid crystal display cell sealant composition has excellent low moisture permeability
- the liquid crystal display cell seal composition lacks low moisture permeability.
- -XX 60 "C 251 g / m 2 ⁇ 24h rs with moisture permeability. Above, the liquid crystal sealant composition lacks low moisture permeability
- the moisture permeability is 100 gZm 2 ⁇ 24 h rs or less, and the composition for liquid crystal display cell sealant is particularly excellent in low moisture permeability.
- liquid crystal display Cell sealant composition has excellent low moisture permeability
- the moisture permeability is 151 to 200 g / m 2 ⁇ 24 hrs, and the low moisture permeability of the liquid crystal display cell sealant composition is very low.
- the composition for liquid crystal display cell seals lacks low moisture permeability.
- the liquid crystal sealant composition of each example was applied on a smooth release film to a thickness of 70 to 120, heat-treated at 80 for 30 minutes, and thermally cured at 150 for 90 minutes.
- a small piece (15 mm square) of the cured film obtained as described above was cut out, and the cured body was subjected to TMA measurement from 30 to 18 at a temperature rise of 5 per minute.
- the linear expansion coefficient per unit was determined by dividing the strain amount of 80 by 30 and then by 50.
- the liquid crystal sealant composition of each example was applied on a smooth release film to a thickness of 70 to 120 /, heat-treated at 80 for 30 minutes, and thermally cured at 150 for 90 minutes.
- a small piece (15 mm square) of the obtained cured film was cut out, and the cured product was subjected to TMA measurement from 40 to 18 at a temperature rise of 5 T / min.
- the inflection point of the strain was defined as the heat distortion temperature (T g) of the cured product.
- the liquid crystal sealant composition of each example was applied on a smooth release film to a thickness of 70 to 12 and heat-treated at 80 for 30 minutes, and further heat-cured at 150 for 90 minutes.
- the cured film thus obtained was cut into a square of 100 mm, and the cured product was immersed in boiling water for 30 minutes, 3 hours or 5 hours, and the weight increase was calculated.
- the value multiplied by 00 was taken as the water absorption. That is,
- Shore D hardness is 70 or more and less than 80, and the cured body is rich in rigidity
- the liquid crystal sealant composition of each example was coated on a smooth release film to a thickness of 70 to 120, heat-treated at 80 ° C for 30 minutes, and heat-cured at 150 to 90 minutes to obtain a cured film of 100 mm
- the cured product was heated at a constant speed of 5 per minute under an air atmosphere at a frequency of 1 Hz using a dynamic viscosity tester manufactured by Rheometrics to obtain a viscosity curve.
- storage elastic modulus in the range of 100 to 150.
- a liquid crystal display cell manufactured by performing adhesive curing under the conditions shown in each example is magnified with a 20x magnifying glass and observed with the naked eye to see if there is any disturbance in the seal line and defective sealing due to the generation of through bubbles. The presence or absence of the location was measured.
- a wedge is driven into a liquid crystal display cell manufactured through a sheet press hardening process under the conditions shown in each example under a 60 environment, and the adhesive force of the liquid crystal display cell sealing material composition in the peeled state at that time is measured.
- the liquid crystal display cell manufactured through the sheet-fed press hardening process under the conditions shown in each example was exposed to a 1 2 1 pressure cooker for 2 hours, then taken out and driven into a wedge at room temperature. Represents the adhesive strength of the sealing material composition for liquid crystal display cells in the peeled state.
- RC4087 liquid crystal material manufactured by Chisso Co., Ltd. was injected into the liquid crystal display cell manufactured through the single-wafer press hardening process under the conditions shown in each example from the liquid crystal filling port. — Sealed with 302 [Mitsui Chemicals, Inc.] to produce a liquid crystal panel. After leaving the LCD panel in an atmosphere of 65: / RH 95% for 250 hours, 500 hours, and 1,000 hours, remove the LCD panel, attach a polarizing plate to the front side, and attach a polarizing plate with a reflector to the rear side. Attached. Thereafter, a drive circuit and the like were mounted on the unit, and changes in the display function were observed.
- ⁇ Display unevenness is seen in the range from 151 to less than 500 im at the distance from the seal around the cell periphery
- the monofunctional epoxy resin has an ionic conductivity of 1.5 mS / m (hereinafter simply referred to as ionic conductivity of extracted water) extracted and separated and extracted by contact mixing with pure water of the same mass for 1 hour.
- 2-ethylhexyl monoglycidyl ether abbreviation: 2EHMG
- t-butylphenol monoglycidyl purified to 1.2 mSZm (12 S / cm) or less in ionic conductivity of extracted water Ether (abbreviation: t_BPMG) was prepared.
- bifunctional aliphatic epoxy resin 1,6-hexanediol diglycidyl ether (abbreviation 6-HGDE) purified to 0.2 mS / m (2 fiS / cm) by extraction water ion conductivity is used.
- bifunctional bisphenol A-type epoxy resin Mitsui Chemicals Co., Ltd.'s product name “Epomic R_140P” (average molecular weight 370), Yuka Shell Co., Ltd. Product name “Epicoat 1007” (average molecular weight 4000), Mitsui Chemicals Co., Ltd.
- the phenol novolak resin is a product of Mitsui Chemicals Co., Ltd.'s trade name “Mirex VR93 i5” (resin consisting of phenol nucleus with methylene bond), especially with softening point temperature of 114.9, free phenol content of 0.03 %, The chlorine atom content is 0.01% or less, and the ionic conductivity of the extraction water is 0.5 mS / m (5 ⁇ S / cm). Simply called FP resin).
- esterified phenol novolak resin As another phenol novolak resin, Nopolak PSM-4261 manufactured by Gunei Chemical Co., Ltd., and as esterified phenol novolak resin, Nopolak PSM—manufactured by Gunei Chemical Co., Ltd. as shown in Synthesis Example 1 below. 4261 phenolic hydroxyl A resin in which 98 mol% of the groups were benzoyl esterified (hereinafter referred to as esterified PSM-4261) was prepared.
- esterification-modified products shown below were obtained by esterification-modification according to Synthesis Example 1.
- esterified trisphenol monomer which is a high-melting substance, was produced according to Synthesis Example 2.
- the phenol aralkyl resin is manufactured by Mitsui Chemicals, Inc., “Xyloc XL C-225L” (resin in which a phenol nucleus is bonded to a p-xylene nucleus via a methylene bond). It has a mass average molecular weight of 7150, a softening point of 84, free phenol of 0.01% or less, a chlorine atom content of 0.01% or less, and an ionic conductivity of 0.3 mSZm (3 SZcm) of extracted water. (In the following examples, simply referred to as XP resin).
- a phenol nucleus is bonded to a p-xylene nucleus via a methylene bond, and has a mass average molecular weight of about 1750 in terms of polystyrene by GPC, a softening point of 76 ⁇ , Free phenol with a content of 0.01% or less, chlorine atom content of 0.01% or less, and ionic conductivity of extracted water of 0.3 mS / m (3 SZcm) (hereinafter simply referred to as XLP resin)
- XLP resin ionic conductivity of extracted water of 0.3 mS / m
- the esterified phenol aralkyl resin 99 mol% of the active phenolic hydroxyl groups of the XLP resin is benzoyl-esterified, and the ion conductivity of the extracted water is 1.1 lmSZm (11 Pi S / cm).
- esterified aralkyl resin (Hereinafter, simply referred to as esterified aralkyl resin).
- the alicyclic compound-modified phenol nopolak resin has a weight average molecular weight in terms of polystyrene derived from purified phenol and a, a-dimethyl ether_2,5-dicyclopentene of 969, and has an ion conductivity of extracted water.
- DCN resin dicyclopentene-modified phenol nopolak resin
- DCN resin dicyclopentene-modified phenol nopolak resin
- CHN resin so-called cyclohexane-modified phenol nopolak resin
- esterified alicyclic compound-modified phenol novolak resin the dicyclopentene-modified phenol nopolak resin.
- esterified DCN resin 100% by mole of active phenolic hydroxyl groups in the cyclohexane-modified phenol nopolak resin are benzoyl-esterified, and the ionic conductivity of the extracted water is 0.6 mSZm (6 S / cm) Esterified CHN resin) was prepared.
- the polycyclic aromatic compound-modified nopolak resin is FP I from Kashima Oil Co., Ltd.
- the compound-modified nopolak resin is a resin in which 95 mol% of the active phenolic hydroxyl groups of FPI_5136 are benzoyl-esterified and the ionic conductivity of the extracted water is 0.
- the naphthol nopolak resin has a mass average molecular weight of 878 in terms of polystyrene derived from 0-naphthol and formaldehyde, and the ionic conductivity of the extracted water is 0.3 mSZm (3 ⁇ (S / cm) resin (hereinafter simply referred to as NN resin) is used as the esterified naphthol nopolak resin.
- Esterified NN resin in which 50 mol% of the phenolic hydroxyl groups of the NN resin is benzoyl ester It I prepared each.
- the naphthol aralkyl resin has a polystyrene equivalent mass average molecular weight of 555 derived from / 3- naphthol and ⁇ , dimethyl ether mono-xylylene, and has an ion conductivity of 0.
- a 7mSZm (7 ⁇ S / cm) resin (hereinafter simply referred to as an NA resin) is used as its esterified naphthol aralkyl resin. 50 mol% of the phenolic hydroxyl groups of the NA resin are converted into benzoyl esters. Each of the esterified NA resins was prepared.
- the alicyclic compound-modified naphthol nopolak resin has a polystyrene-equivalent weight average molecular weight of 1240 derived from j3-naphthol and a, a-dimethyl ether-1,2,5-dicyclopentene, and has an ion conductivity of extracted water.
- 0.7 mS / ⁇ 1 nS / c) resin (hereinafter simply referred to as DC-NN resin) is used as an ester of the ester obtained by benzoyl esterifying 50 mol% of the phenolic hydroxyl groups of DC-NN resin.
- a DC—NN resin was prepared.
- Tris P compound 4,4 '-[(2-hydroxyphenyl) methylene] bis [2,3] purified to an ion conductivity of 0.3 mS / m (3 S / cm) , 6-trimethylphenol] (hereinafter simply referred to as Tris P compound), and has a maximum particle size of 4 ⁇ m or less by a fine pulverizer.
- the 99.9% maximum particle diameter of the calculated weighted product curve was 4 m or less.
- esterified polyhydric phenol monomer As the esterified polyhydric phenol monomer, according to Synthesis Example 2, 99.3 mol% of the active phenolic hydroxyl group of the Tris P compound was converted into a benzoyl ester, and the ion conductivity of the extracted water was 0%. Prepare 6mS / m (6S / cm), hereinafter simply referred to as esterified Tris P compound. ..
- Another polycyclic aromatic compound-modified phenol nopolak resin is Kashima Oil Co., Ltd. product name “PPF resin; FP I-5127” (derived from the light fraction from phenol nucleus and catalytic cracking plant).
- the resin has a free phenol content of 0.01% or less, a softening point of 80, and a GPC polystyrene equivalent number average molecular weight from a resin in which a 3 or 4 ring polycyclic aromatic hydrocarbon nucleus is randomly bonded with a methylene bond. 650 and the ion conductivity of the extracted water was less than 2 mS nom (20 ⁇ S / cm).
- Adipic dihydrazide (abbreviation ADH) was selected as the dihydrazide compound.
- phenol nopolak resin (trade name: PSM-4216, hydroxyl equivalent 107 g / eq: manufactured by Gunei Chemical Co., Ltd.) It was charged and the internal temperature was raised to 125. While maintaining the internal temperature at the same temperature, 140.6 g of benzoyl chloride was added dropwise over 2 hours while stirring. Thereafter, the reaction was performed for 2 hours while maintaining the temperature at 125 ° C, and the temperature was further increased to 140 ° C. After aging at 140 to 150 for 2 hours, the generated hydrochloric acid gas was distilled off under reduced pressure at a maximum of 15 ° C./1 OmmHg.
- the resin obtained here is dissolved in 1000 g of toluene, washed with hot water at 60 to 70 ° C until the wastewater becomes neutral, and the toluene is distilled off at a maximum of 150 ° C / 5mmHg.
- 210 g of a so-called esterified phenol novolak resin (esterified PSM-4216) in which 98 mol% of the hydroxyl groups were benzoylated was obtained.
- the compound obtained here was dropped and precipitated in 1000 g of toluene, and the obtained crystal component was dissolved again in a 5% water-acetone mixture, and the precipitation was repeated five times with a toluene solvent to obtain aqueous acetone wastewater. Is recrystallized until neutral, and the crystals are dried under a condition of Z5mmHg at a maximum of 150, and 99.3 mol% of ⁇ acid groups are benzylated, so-called esterification. There was obtained 110 g of a trisphenol monomer (esterified trisphenol compound).
- a curing accelerator represented by the following general formula (13) (hereinafter, simply referred to as PZO) is produced by the production method described in Journal of gene ralch emistry of the USSR, 55, p 1453 (1985). It was used.
- SO-E1-6 dry-processed filler
- SO-A805 dry-processed filler
- Admafine SO-A800 amorphous As silica, Nippon AEROSIL INDUSTRY CO., LTD.
- Product name “AEROSIL # 200” (primary average particle size 0.08 ⁇ m determined by electron microscopy), also Shin-Etsu Chemical Co., Ltd.
- MU-120 primary primary average particle size of 0.07 m, determined by electron microscopy
- Product name “UA-5105” hereinafter simply Called standard alumina 1 A, as titanium oxide, Ishihara Sangyo Co., Ltd.
- Product name “CR-EL” average with the 50% particle size of the weighted product curve obtained by the laser irradiation type particle size distribution measurement method at 632.8 nm wavelength as the primary average particle size 1 m was used for each size.
- the grafted modified alumina has a 50% average particle size of 0.1 / m and a 99.5% particle size obtained from a weighted product curve obtained by a laser irradiation type particle size distribution measuring method at 632.8 nm wavelength.
- the dried sample obtained by washing 10 parts of the grafted modified alumina with 100 parts of toluene solvent five times also had a 1.7% loss on heating as an organic component when the dried sample was baked in a rutupo. It was found that about 2.4% of ⁇ -glycidoxypropyltrimethoxysilane was grafted.
- epoxysilane N-phenyl-aminopropyltrimethoxysilane
- aminosilane N-phenyl-aminopropyltrimethoxysilane
- isocyanatopropyltrimethoxysilane Ethoxysilane was selected and used.
- compositions prepared through the following Synthesis Examples 3 to 4 were used.
- Epoxy containing rubber-like polymer fine particles finely crosslinked acrylic rubber fine particles; abbreviated as S1
- Bisphenol F-type epoxy resin (Epiclone 830 S, manufactured by Dainippon Ink and Chemicals, Inc.) as a bifunctional epoxy resin in a 2000 ml four-necked flask equipped with a stirrer, gas inlet tube, thermometer, and cooling tube 600 g, 12 g of acrylic acid, 1 g of dimethylethanolamine and 50 g of toluene were added, and the mixture was reacted at 11 for 5 hours while introducing air to introduce a double bond.
- Bisphenol F-type epoxy resin (Epiclone 830 S, manufactured by Dainippon Ink and Chemicals, Inc.) as a bifunctional epoxy resin in a 2000 ml four-necked flask equipped with a stirrer, gas inlet tube, thermometer, and cooling tube 600 g, 12 g of acrylic acid, 1 g of dimethylethanolamine and 50 g of toluene were added, and the mixture was reacted at 11 for 5 hours while introducing air to introduce a double
- the softening point of the finely-crosslinked acrylic rubber microparticles (S1) determined by subjecting the epoxy resin composition (a) to TBA was -42.
- composition (b) was rapidly cured at a low temperature in the presence of a photocuring catalyst, and the average particle size obtained by measuring the dispersed rubber particle size by observing the fracture surface morphology of the cured product with an electron microscope.
- This is an epoxy resin composition (b) in which finely-crosslinked silicon rubber fine particles (S 2) having a value of 1.5 m are uniformly dispersed.
- the content of finely crosslinked silicon rubber fine particles (S2) calculated from the charged amount is 30.0%. Further, the softening point temperature of the finely crosslinked silicone rubber fine particles (S2) determined by subjecting the epoxy resin composition (b) to TBA was -65.
- a 2000ml four-lot flask equipped with a stirrer, gas inlet tube, thermometer and reflux condenser was charged with 420.5 g of ion-exchanged water, 10 g of itaconic acid, and sodium alkyl diphenyl ether disulfonate as a surfactant ( 2.6 g of “Pelex SS_L” from Kao Corporation was added, and the temperature was raised to 70 ° C while introducing nitrogen.
- an aqueous initiator solution prepared by dissolving 1.2 g of potassium persulfate in 10 g of ion-exchanged water was added, followed by 5 g of n-butyl acrylate and methyl A mixed solution consisting of 5 g of methacrylate and 0.5 g of hydroxyethyl methyl acrylate was added all at once, and seed polymerization was carried out at 70 for 20 minutes.
- the average primary particle size of the dispersed particles obtained by using an electron microscope with Em-1 was 170 nm (0.17 m).
- the micro-crosslinking degree index of the high softening point acrylic polymer fine particles (P1) has a micro-crosslinking degree of 0.5% by mass as expressed by the content ratio of the cross-linking monomer in all the monomers. From the TBA information using the hot melt film, the softening point temperature of the high softening point acrylic polymer fine particles (P1) was 8 O :.
- Zero F 351 a product of Zeon Kasei Co., Ltd., which is known as a composite particle having a core-shell mass ratio of 1: 1 with rubber-like polymer particles (4) as a core phase and high softening point polymer particles (8) as a shell phase (Obtain an average particle size of 0.
- the composition for liquid crystal display cell sealant (E1) has an epoxy resin content of 20.7%, a rubber-like polymer fine particle content of 10.2%, an inorganic filler content of 22.7%, and a solvent content of 18. 7%, coupling agent content 1.6%, curing agent content 24.6%, curing accelerator content 1.5%.
- Table 2 shows the physical properties of the sealant composition (E1) for liquid crystal display cell sealants.
- a composition for liquid crystal display cell sealant (E1) 100 parts of a 5 m-thick short glass fiber gap control agent 5 parts was blended and mixed well, and the composition obtained was first aligned with the transparent electrode On a film-treated glass substrate for liquid crystal cells (hereinafter simply referred to as ITO substrate), a pattern consisting of a total of four cells (one cell size of 1 inch), one each for the top, bottom, left and right, is printed by screen.
- An ITO substrate having a width of about 0.5 mm and a sealant applied thickness of about 20 to 22 was obtained.
- composition for liquid crystal display cell sealant (E2) has an epoxy resin content of 26.
- Table 2 shows the physical properties of the sealant composition (E2) for liquid crystal display cell sealants.
- a composition obtained by blending 5 parts of a gap control agent for a short glass fiber with a thickness of 5 with 100 parts of the composition for a liquid crystal display cell sealant (E2), and thoroughly mixing the mixture, A total of 4 cells (1 inch in cell size) are screen-printed on the TO substrate, one each for the top, bottom, left and right, with a width of about 0.5 mm and a sealant applied thickness of about 20 to 22 m.
- An ITO substrate was obtained. Then, after 3 0 min treatment in a hot air dryer at 80, put another I TO substrate to be paired, after the alignment, pressing pressure 0.
- the composition for liquid crystal display cell sealant (E3) has an epoxy resin content of 20.18%, a rubber-like polymer fine particle content of 6.82%, an inorganic filler content of 22%, a solvent content of 15%, and a coupling agent.
- the content is 1%, the content of the curing agent is 33.5%, and the content of the curing accelerator is 1.5%.
- Table 2 shows the physical properties of the sealant composition (E3) for liquid crystal display cell sealants.
- Liquid crystal display cell sealant composition (E3) 100 parts of 2 parts of a 6 m short fiber glass gap control agent were added and mixed well.
- the composition for liquid crystal display cell sealant (E4) has an epoxy resin content of 21.3%, a rubbery polymer / fine particle content of 10.4%, an inorganic filler content of 23.3%, and a solvent content of 17. %, Coupling agent content 1.7%, curing agent content 24.3%, and curing accelerator content 1.6%.
- Table 2 shows the physical properties of the sealant composition (E4) for liquid crystal display cell sealants.
- a composition for liquid crystal display cell sealant (E4) 100 parts was mixed with 2 parts of a 5 m-thick short glass fiber gap control agent and mixed thoroughly.
- ITO board with a width of about 0.5mm and a sealant applied thickness of about 22 to 24m by screen printing a pattern consisting of a total of 4 cells (1 inch in cell size), one each for the top, bottom, left and right, per board I got After that, after treating with a 90 ° C hot air dryer for 15 minutes, another ITO substrate to be paired is placed, and after alignment, press pressure is set to 0.03 MPa / cm 2 and 180 minutes by rigid single-plate press heating.
- Epoxy resin composition in which 20 parts of cresol nopolak-type epoxy resin “Epototo Y DCN” which is a solid epoxy resin and 2 parts of bisphenol A-type epoxy resin flep “Epomic R 367” are dissolved in 9 parts of methyl carbitol 31 parts
- Resin composition in which finely divided acrylic rubber fine particles (S1) having an average particle diameter of 0.05 m are uniformly dispersed (a) 15.5 parts, XP resin (phenolic aralkyl resin) as a curing agent 25 parts of hardener solution pre-dissolved in 10 parts of methyl carbitol 35 parts, hard Ul part of the accelerator, 2 parts of amorphous silica “MU-120”, 14.6 parts of amorphous alumina “UA-5105J”, 10.6 parts, and 0.9 part of aminosilane as the silane coupling agent were mixed together.
- composition for liquid crystal display cell sealant (E5) is composed of an epoxy resin having 3.5 epoxy groups in one molecule by mass average. Its content is 31.73% and the content of rubbery polymer fine particles is 5.87%, inorganic filler content 16.6%, solvent content 19%, silane coupling agent content 0.9%, curing agent content 25%, curing accelerator content 1% .
- Table 4 shows the physical properties of the sealant composition for the liquid crystal display cell sealant composition (E5).
- a substrate was obtained.
- the composition for liquid crystal display cell sealant (E6) is composed of an epoxy resin having a weight average of three epoxy groups in one molecule, and has a content of 29.2% and a rubbery polymer—fine particle content of 3 .8%, high softening point polymer fine particle content 9.5%> inorganic filler content 16%, solvent content 22%, silane coupling agent content 1.5%, hardener content 16%, curing
- the accelerator content is 2%.
- the initial viscosity was 65 Pa ⁇ s at 25 measured by an E-type viscometer.
- Table 4 shows the physical properties of the sealant for the liquid crystal display cell sealant composition (E6).
- E6 To 100 parts of the composition for liquid crystal display cell sealant (E6), 5 parts of a 5 m-thick short glass fiber gap control agent was blended and thoroughly mixed.
- a screen consisting of a total of 4 cells (each cell size is 1 inch) is printed by screen on a single board, and the width is about 0.5 mm and the thickness of the sealant applied is about 20 to 22 m.
- a substrate was obtained. Then, after treating with a 90 X hot air dryer for 15 minutes, another ITO substrate to be paired is placed, and after positioning, press pressure is 0. O SMP aZcm 2 , 180: Z.
- the test was repeatedly put into a 150-heated oven for 90 minutes, and the bonding test for permanent curing was repeated 10 times. As a result, there was no seal failure and no disturbance of the seal line due to the generation of bubbles penetrating the seal, and the desired liquid crystal display cell substrate could be manufactured in all lots.
- the liquid crystal display cell seal described in Table 3 was prepared in the same manner as in Example 6 except that the high softening point acrylic polymer fine particles (P1) were replaced with the high softening point polymer fine particles (P2).
- a composition for preparation (E7) was obtained.
- the composition for liquid crystal display cell sealant (E7) is composed of an epoxy resin having three epoxy groups on a weight average in one molecule, and has a content of 29.2% and a rubber-like polymer / fine particle content of 8 55%, high softening point polymer fine particle content 4.75%, inorganic filler content 16%, solvent content 22%, silane coupling agent content 1.5%, hardener content 16%, curing acceleration Agent content of 2%.
- the 25 initial viscosity measured by an E-type viscometer was 68 Pa ⁇ s.
- Table 4 shows the physical properties of the sealant for the liquid crystal display cell sealant composition (E7).
- a gap control agent of spherical silica having a particle size of 5 im was blended, and the mixture obtained by thorough mixing was first applied to an ITO substrate.
- a screen consisting of a total of 4 cells (cell size of 1 inch) is printed by screen printing on each substrate, and the ITO substrate is about 0.5 mm wide and has a sealant coating thickness of about 20 to 22 m. Obtained.
- the liquid crystal display cell sealant composition (E8) has an epoxy resin content of 35%, an inorganic filler content of 16.6%, a solvent content of 19%, a silane coupling agent content of 0.9%, and a curing agent content. 27.5% and 1% of curing accelerator content.
- the initial viscosity was 25 Pa ⁇ s with an E-type viscometer at 25 t.
- Table 4 shows the physical properties of the sealant for the liquid crystal display cell sealant composition (E8).
- a gap control agent of spherical silica having a particle diameter of 5 m was blended, and the mixture obtained by thorough mixing was first applied to an ITO substrate.
- each cell is cut individually, and a cell wedge peeling test is performed, and a cell wedge peeling test is performed after a 2-hour pressure cooker test at 121 ° C.
- the linearity of the seal line and the seal line were observed with a magnifying glass, and the results are shown in Table 4. Also, the sealing performed using the obtained cell Table 4 also shows the results of the functional durability test.
- the composition for liquid crystal display cell sealant (E9) has a weight average of 2.5 It consists of an epoxy resin having an epoxy group, its content is 37%, the content of rubber-like polymer particles is 3.9%, the content of inorganic filler is 10.8%, the content of high softening point polymer particles is 3.5%, It consists of 2% silane coupling agent content, 16.6% curing agent content, 2.2% curing accelerator content, 23% solvent content, and 1% wax content.
- the 25 initial viscosity measured by an E-type viscometer was 64 Pa ⁇ s. Table 6 shows the physical properties of the sealing agent composition (E 9) for the liquid crystal display cell sealing agent.
- composition for liquid crystal display cell sealant E9
- 3 parts of a gap control agent of spherical silica having a particle size of 5 m was blended and thoroughly mixed.
- a screen consisting of a total of 4 cells (1 inch in cell size) is printed on each substrate, one each for the top, bottom, left and right, to obtain an ITO substrate with a width of about 0.5mm and a sealant coating thickness of about 2073 ⁇ 422.
- each cell is individually cut> a cell wedge peeling test, and a cell wedge peeling test after a Z3 hour pressure cooker test at 120.
- the linearity was observed with a magnifying glass, and the results are shown in Table 6.
- Table 6 also shows the results of a seal function durability test performed using the obtained cells.
- composition (E10) for a liquid crystal display cell sealing agent of the present invention was obtained.
- the composition for liquid crystal display cell sealant (E10) is composed of an epoxy resin having a weight average of 2.2 epoxy groups in one molecule, the content is 45.58%, and the content of rubber-like polymer fine particles is 5. 51%, inorganic filler content 8%, high softening point polymer Fine particle content 1.85%, silane coupling agent content 1.48%, curing agent content 35.73%, curing accelerator content 1. 85%, solventless type.
- the 25 "initial viscosity measured by an E-type viscometer was 102 Pa ⁇ s.
- Table 6 shows the physical properties of the sealant for the liquid crystal display cell sealant composition (E10).
- composition for liquid crystal display cell sealant E10
- 3 parts of a gap control agent of spherical silica having a particle diameter of 5 / zm were blended, and the composition obtained by thorough mixing was first applied to the IT0 substrate.
- a screen consisting of a total of 4 cells (cell size of 1 inch) is printed on each board, each consisting of 4 cells (1 inch each).
- the width is about 0.5mm and the thickness of the sealant coating is about 20 to 22 ⁇ m.
- An ITO substrate was obtained. Then, after heat treatment with 95 hot air drier for 15 minutes, another IT ⁇ substrate to be paired is placed, and after positioning, press pressure is 0.05MPaZcm 2 and 170/5 minutes by rigid single-wafer press heating method.
- the joint seal test was further repeated 10 times, where the adhesive was fully cured in a heating oven at 150 for 80 minutes. As a result, there was no seal failure due to the generation of bubbles penetrating the seal, and the desired liquid crystal display cell substrate could be manufactured in all lots.
- Example 11 According to the formulation shown in Table 5, in the same manner as in Example 5, a composition (E11) for a liquid crystal display cell sealant of the present invention was obtained.
- composition for a liquid crystal display cell sealant (El1) is composed of an epoxy resin having a weight average of 2.8 epoxy groups in one molecule. 9.66%, inorganic filler content 16.6%, solvent content 14%, silane coupling agent content 1.9%, hardener content 25%, hardening accelerator content 5% .
- Table 6 shows the physical properties of the sealant composition for the liquid crystal display cell sealant composition (E11).
- a liquid crystal display cell sealant composition (E11) 100 parts was mixed with 5 parts of a 5 im thick glass short fiber gap control agent, and mixed thoroughly.
- a polyethylene terephthalate plastic substrate (hereinafter simply referred to as an ITO plastic substrate) for liquid crystal cells that has been treated with an alignment film has a pattern consisting of a total of 4 cells (1 inch in cell size), one each for the top, bottom, left and right, per substrate. Screen printing was performed to obtain an ITO plastic substrate having a width of about 0.5 mm and a coating thickness of a sealant of about 20 to 22.
- a spherical silica gap control agent having a particle diameter of 5 m was blended with 100 parts of the composition for liquid crystal display cell sealant (E11), and the resulting mixture was thoroughly mixed.
- a total of 4 cells (1 inch in cell size) are printed by screen printing on each substrate, and the ITO substrate has a width of about 0.5mm and a sealant applied thickness of about 20 to 22m. Obtained.
- heat at 95 ° C After heat treatment for 15 minutes in an air dryer, another ITO substrate to be paired was placed, and after alignment, temporary bonding was performed by a rigid single-wafer press heating method with a pressing pressure of 0.05 MPa / cm 2 , 170 5 minutes.
- the liquid crystal was prepared in exactly the same manner as in Example 11 except that the curing agent FP15127 (PPF resin) in Example 11 was replaced with 25 parts, and instead of 10 parts of marcaline S-1 and 15 parts of marcaline CBA.
- a composition for display cell sealant (E12) was prepared. Table 6 shows the physical properties of the sealant relating to the liquid crystal display cell sealant composition (E12).
- a composition obtained by blending 5 parts of a 5 / zm glass short fiber gap control agent with 100 parts of a liquid crystal display cell sealant composition (E12) and thoroughly mixing the mixture was used as an ITO substrate.
- a TO substrate was obtained. After that, after processing for 20 minutes in a hot air dryer at 80 ° C, another ITO substrate to be paired is placed, and after alignment, press pressure 0.03MPaZcm 2 , 180 ⁇ : rigid single-wafer heating in 5 minutes After temporary bonding by the press method, the joint seal test was performed 10 times, which was fully cured at 150 ° C / 80 minutes. As a result, defective seals and seal lines No disturbance occurred. In addition, the results of the seal function durability test performed using the obtained cells were good even after 1000 hours as shown in Table 6.
- Example (11) instead of 25 parts of the curing agent FP 15127 (PPF resin),
- a liquid crystal display cell sealant composition (E13) was prepared in exactly the same manner as in Example 11, except that 5 parts of P resin and 15 parts of Milex SP resin were used.
- Table 6 shows the physical properties of the sealant for the liquid crystal display cell sealant composition (E13).
- a liquid crystal display cell sealant composition (E13) was mixed with 100 parts by weight and 5 parts of a glass short fiber gap control agent of 5 parts was blended, and the mixture obtained by thorough mixing was first applied to an IT0 substrate. Screen printing of a pattern consisting of a total of 4 cells (cell size of 1 inch), 1 top, bottom, left and right, 1 board per board, and an ITO board with a width of about 0.5 mm and a sealant coating thickness of about 20 to 22 Obtained. Then, after processing for 20 minutes in an 80 hot air dryer, place another ITO substrate to be paired, and after positioning, press pressure 0.03MPa / cm 2 , 18 (TCZ 5min.
- the joint seal test was further repeated 10 times, in which the final hardening was performed at 150/80 minutes, and as a result, there were no seal failure spots or seal line disturbances due to the generation of seal penetration bubbles. I didn't.
- Table 6 shows the results of the joint seal test and the seal function durability test.
- Example No. Example 9 Example 10
- Example 13 Sealant composition for liquid crystal display cell E9 E10 E11 E12 E13 Constituent raw materials Epoxy resin raw material
- the composition for a liquid crystal display cell sealant (F1) is composed of an epoxy resin having a weight average of 2.5 epoxy groups in one molecule, and has a content of 68%, an inorganic filler of 11.9%, Consists of 1% silane coupling agent, 9% latent epoxy curing agent, 0.1% curing accelerator, and 10% solvent.
- the initial viscosity was 29 Pa * s at 25 measured by an E-type viscometer, and the thixotropic index expressed by the ratio of 1 rotation / 0 rotation viscosity was 1.7.
- Table 8 shows the physical properties of the sealant for the liquid crystal display cell sealant composition (F1).
- a substrate was obtained. Then, after 20 minutes treatment with 80 hot air drier, put another I TO glass substrate to be paired, after the alignment, pressing pressure 0.
- composition for a liquid crystal display cell sealant (F1) was mixed with 5 parts of a 5 m-thick short glass fiber gap control agent, and the mixture was thoroughly mixed.
- a screen consisting of a total of 6 cells (1 inch in cell size), 1 top, bottom, left and right, is printed on each board, and the width is about 0.5mm and the thickness of the sealant applied is about 20 to 22 / zm.
- a glass substrate was obtained. After that, the 4 cells are treated with 80 hot air dryer for 20 minutes, another ITO substrate to be paired is placed, and after alignment, press pressure is 0.03MPaZcm 2 , and 180 ⁇ rigid single sheet heat press is heated for 4 minutes Temporary bonding revealed bubbles penetrating the seal and defective seal lines.
- composition (F1) for a liquid crystal display cell sealing agent lacked the sheet heat press suitability.
- the remaining 2 cells are treated with an 80 hot air dryer for 20 minutes, another ITO substrate to be paired is placed, and after alignment, pressure is fixed at 0.03 MP cm 2 and the temperature is raised at 2 per minute. After the temperature reached 130, it was left at the same temperature for 90 minutes to prepare a liquid crystal display cell.
- Table 8 shows the wedge opening test results and the non-leaching test results of the cells obtained here. Comparative Example 2
- the composition for a liquid crystal display cell sealant (F2) comprises 45% of an epoxy resin, 25% of an inorganic filler, 1% of a silane coupling agent, 12% of a latent epoxy curing agent, 2% of a curing accelerator, and 15% of a solvent.
- the 25 initial viscosity measured by an E-type viscometer was 35 Pa * s, and the thixotropic index expressed by the ratio of 1 rotation / 10 rotation viscosity was 1.6.
- Table 8 shows the physical properties of the sealant relating to the liquid crystal display cell sealant composition (F2).
- To 100 parts of the composition for liquid crystal display cell sealant (F2) 3 parts of a gap control agent for short glass fiber with a thickness of 5 / m were blended and thoroughly mixed.
- a pattern consisting of a total of 6 cells (each cell size is 1 inch) is printed by screen on each substrate, and the width is about 0.5 mm and the thickness of the sealant applied is about 20 to 22 jum. ⁇ A glass substrate was obtained. After that, the four cells were treated in an 80 ⁇ hot air drier for 2.0 minutes, another ITO substrate to be paired was placed thereon, and after alignment, the degree of vacuum was 980 hPa, 18 Ot: 10 minutes using a vacuum single-wafer heat press As a result of heat temporary bonding, generation of bubbles penetrating the seal and failure of the seal line were observed.
- the composition (F1) for a liquid crystal display cell sealing agent lacked the vacuum single-wafer heat press suitability.
- the remaining two cells, 8 O After a hot air dryer 20 minutes treatment, put another I TO substrate to be paired, after crimped at 0. 03 MP aZ cm 2 after alignment, every from room After the temperature was raised to 150 ° C in 2T :, the liquid crystal display cell was prepared by being left at the same temperature for 90 minutes.
- Table 8 also shows the observation results of the liquid crystal display function of the obtained cells.
- the result of the sealing function durability test performed using the obtained cells showed that the display was significantly uneven within 250 hours and the display function was deteriorated.
- Epoxy VG3101 L 43 1 part of a resin solution obtained by dissolving 1 part in propylene glycol monomethyl ether acetate 25 parts, 68. 1 part, NA resin (naphtho aralkyl resin) 111. 2 parts and DCN (dicyclopentene modified pheno) 111.2 parts and a curing agent solution obtained by dissolving 2 parts in advance in 150 parts of propylene glycol monomethyl ether acetate 372.4 parts, epoxy resin composition containing silicone rubber (b) 250 parts, curing acceleration 5302 T 21.
- the liquid crystal display cell sealant composition (E14) excluding the gap control agent had an epoxy resin content of 21.81%, a solvent content of 17.5%, a rubbery polymer fine particle content of 7.5%, and an inorganic material. Filler content 27.5%, curing agent content 22.24%, curing accelerator content 2.59%, silane coupling agent content 0.86%.
- Table 10 shows the physical properties of the sealant composition (E14) for liquid crystal display cell sealants. Using a composition for a liquid crystal display cell sealing agent (E14), a bonding seal test was performed in the same manner as in Example 1. Table 10 shows the results of the bonding seal test and the seal durability test. In both the wedge opening test of the cell and the same test after the pressure cooker, the obtained cell was found to have complete cohesive failure of the adhesive and excellent adhesion reliability. The display function after 1000 hours of the seal function durability test was good.
- the liquid crystal display cell sealant composition (E15) excluding the gap control agent has an epoxy resin content of 21.15%, a solvent content of 16%, a rubbery polymer fine particle content of 9.85%, and an inorganic filler. 23.5%, hardener content 26.5%, It consists of a curing accelerator content of 1% and a silane coupling agent content of 2%.
- Table 10 shows the physical properties of the sealant composition (E15) for liquid crystal display cell sealants.
- the obtained cell was found to be a complete cohesive failure of the adhesive in a cell wedge opening test, and was found to be excellent in adhesion reliability.
- the seal function durability test 1 The seal function durability test 1
- the liquid crystal display cell sealant composition (E16) excluding the gap control agent had an epoxy resin content of 35.15%, a rubbery polymer fine particle content of 9.85%, and an inorganic filler content of 21.3%. , A curing agent content of 29%, a curing accelerator content of 3.2%, and a silane coupling agent content of 1.5%.
- Table 10 shows the physical properties of the liquid crystal display cell sealing composition (E16). Using the composition for a liquid crystal display cell sealing agent (E16), a bonding seal test was carried out in the same manner as in Example 5. Table 10 shows the results of the bonding seal test and the seal durability test. The obtained cell was found to have complete cohesive failure of the adhesive in the cell wedge opening test, and was found to have excellent adhesion reliability. The display function after 1000 hours of the seal function durability test was good.
- composition for liquid crystal display cell sealant (E17) excluding the roll agent Epoxy resin content 35.15%, rubber-like polymer fine particle content 9.85%, inorganic filler content 21.3%, curing agent content 29%, curing accelerator content 3.2%, silane cup
- the content of the ring agent is 1.5%.
- Table 10 shows the physical properties of the sealant composition (E17) for liquid crystal display cell sealants.
- a bonding seal test was performed in the same manner as in Example 5 using the composition for liquid crystal display cell sealing agent (E17).
- the results of the bonding seal test and the seal durability test are shown in Table 10.
- the obtained cell was found to have complete cohesive failure of the adhesive in the cell wedge opening test, and was found to have excellent adhesion reliability.
- the display function after 1000 hours of the seal function durability test was good.
- the composition for liquid crystal display cell sealant (E18) excluding the gap control agent had an epoxy resin content of 35.15%, a rubbery polymer fine particle content of 9.85%, and an inorganic filler * content of 21.3%. , A curing agent content of 25.5%, a curing accelerator content of 3.2%, a silane coupling agent content of 1.5%, and a high softening point polymer / fine particle content of 3.5%.
- Table 10 shows the physical properties of the sealant composition (E18) for liquid crystal display cell sealants.
- a bonding seal test was performed in the same manner as in Example 5 using the composition for liquid crystal display cell sealing agent (E18).
- Table 10 shows the results of the bonding seal test and the seal durability test. The obtained cell was found to be a complete cohesive failure of the adhesive in a cell wedge opening test, and was found to be excellent in adhesion reliability. The display function after 1,000 hours of the seal function durability test was good.
- Example 19 According to the formulation shown in Table 9, in the same manner as in Example 14, a liquid crystal display cell sealing composition (E19) was obtained.
- composition for liquid crystal display cell sealant (E 19) excluding the gap control agent had an epoxy resin content of 34.57%, a solvent content of 19.2%, a rubber-like polymer fine particle content of 5.13%, and a content of 7.13%. Consists of 17% inorganic filler content, 19% curing agent content, 2.1% curing accelerator content, and 1% silane coupling agent content.
- Table 10 shows the physical properties of the sealant composition (E19) for liquid crystal display cell sealants. Using a composition for a liquid crystal display cell sealing agent (E19), a bonding seal test was carried out in the same manner as in Example 5. Table 10 shows the results of the bonding seal test and the seal W durability test. The obtained cell was found to have complete cohesive failure of the adhesive in the cell wedge opening test, and was found to have excellent adhesion reliability. The display function after 1000 hours of the seal function durability test was good.
- Example 20 shows the physical properties of the sealant composition (E19) for liquid crystal display cell sealants. Using a composition for a liquid crystal display cell sealing agent (E19), a bonding seal test was carried out in the same manner as in Example 5. Table 10 shows the results of the bonding seal test and the seal W durability test. The obtained cell was found to have complete cohesive failure of the adhesive in the cell wedge opening test, and was found to have excellent adhesion reliability. The display function after 1000 hours of the seal function durability test was good.
- Example 20
- the liquid crystal display cell of the present invention was prepared in the same manner as in Example 14.
- a composition (E20) was obtained.
- the composition for liquid crystal display cell sealant (E20) excluding the gap control agent has an epoxy resin content of 28.54%, a solvent content of 13.2%, a rubber-like polymer fine particle content of 8.26%, It consists of 17.3% inorganic filler content, 28% hardener content, 3.2% hardening accelerator content, and 1.5% silane coupling agent content.
- Table 10 shows the physical properties of the sealant composition (E20) for liquid crystal display cell sealants.
- a composition for a liquid crystal display cell sealing agent (E20) was used in the same manner as in Example 5, and the results of the bonding seal test and the seal durability test are shown in Table 10.
- the obtained cell had a complete cohesive failure 5 of the adhesive in the cell opening test, which proved to be excellent in adhesion reliability.
- the display function after 1000 hours of the seal function durability test was good.
- a composition for a liquid crystal display cell sealant (F3) was obtained.
- the F3 composition is an example that does not contain a curing accelerator.
- Table 12 shows the results of measuring the physical properties of the sealant other than the water absorption, TMA measurement (Tg, coefficient of linear expansion), moisture permeability, and surface hardness characteristics.
- TMA measurement Tg, coefficient of linear expansion
- moisture permeability moisture permeability
- surface hardness characteristics The film obtained when cured by heat for 150 ⁇ 90 minutes forms only an uncured cured film that shows strong adhesiveness in the 80 to 150 ° C range, and easily swells in acetone solvents. showed that.
- the composition can be said to be a composition with extremely slow thermosetting properties.Evaluation of water absorption properties and TMA measurement cannot be performed substantially, and the water absorption, Tg, moisture permeability and water absorption in Table 12 cannot be measured. Atsu / ko.
- a composition for a liquid crystal display cell sealant (F 4) was obtained in the same manner as in Example 1.
- the F4 composition is an example in which an imidazole monomer is used as a curing accelerator.
- Table 12 shows the properties of the sealant composition for liquid crystal display cell sealant (F 4).
- the F 4 composition clearly has a fatal problem in pot life at room temperature, and lacks coating workability. There was found.
- a composition for a liquid crystal display cell sealant (F5) was obtained.
- the F5 composition is an example using triphenylphosphine as a curing accelerator.
- Table 12 shows the physical properties of the sealant composition (F5) for liquid crystal display cell sealant.
- the F5 composition had a serious problem in pot life at room temperature and lacked coating workability. ing.
- the sealant coating film obtained when cured by heat for 150 minutes only forms an uncured cured film showing strong adhesiveness in the range of 80 to 150, and is easily formed in acetone solvent. It showed swelling properties. Therefore, there is a problem that an F 6 sealant composition to which a hardener is added in an excessively small amount gives only a hardened material which is fragile at room temperature and lacks in heat-resistant stiffness. Since a smooth film-like cured product without tack was not obtained, the evaluation of moisture permeability and water absorption properties could not be performed substantially, and the water absorption and moisture permeability in Table 12 were not measured.
- a composition for a liquid crystal display cell sealing agent (F7) was obtained in the same manner as in Example 1.
- the blending amount of the polyvalent phenol curing agent was 52% by mass, and the curing agent equivalent ratio to the epoxy resin was too large (the equivalent ratio of the epoxy group to the active phenolic hydroxyl group was 1%. : 4) is an example.
- Table 12 shows the physical properties of the sealant composition for liquid crystal display cell sealant (F7).
- the sealant has a fatal problem of producing only a hardened material that is fragile when bent about 10 °. . Therefore, each test of surface hardness, TMA (Tg, coefficient of linear expansion), moisture permeability and water absorption It is qualitatively impossible, and is shown in Table 12 as unmeasurable.
- the F8 composition is a composition comprising an epoxy resin and an esterified polyhydric phenol resin curing agent, a silane coupling agent, an inorganic filler, and a high-boiling solvent.As is clear from the properties of the sealing agent shown in Table 12, As with the F 3 composition of Comparative Example 3, it is clear that the F 8 composition has a remarkable lack of thermosetting properties, and further has a marked lack of suitability for cell formation.
- the sealant coating film obtained when heat-cured at 150 for 90 minutes is in a substantially uncured state, forms only a brittle and fragile cured film, and easily dissolves and swells in an acetone solvent. showed that.
- the sealing agent (F8) composition lacks thermosetting properties.
- the F9 composition is a composition containing a phosphazene compound (PZO) as a curing accelerator and an imidazole epoxy adduct (PN-23) in a total amount of 16% by mass.
- PZO phosphazene compound
- PN-23 imidazole epoxy adduct
- the liquid crystal display cell of the present invention was prepared in the same manner as in Example 1. Thus, a composition (E21) was obtained.
- the composition for liquid crystal display cell sealant (E21) excluding the gap control agent has an epoxy resin content of 29.44%, a solvent content of 13.2%, a rubbery polymer fine particle content of 8.26%, and an inorganic filler.
- the content is 18%, the content of curing agent is 27.8%, the content of curing accelerator is 2%, and the content of silane coupling agent is 1.3%.
- Table 14 shows the physical properties of the sealant composition (E21) for liquid crystal display cell sealants.
- a bonding seal test was performed using the liquid crystal display cell sealing compound composition (E21) in the same manner as in Example 1.
- Table 14 shows the results of the bonding seal test and the seal durability test. The obtained cells showed partial cohesive failure of the adhesive in the cell wedge opening test, and it was found that the adhesion reliability was good. The display function after 1000 hours of the seal function durability test was good.
- the composition for liquid crystal display cell sealant (E22) excluding the gap control agent had an epoxy resin content of 21.1%, a rubbery polymer / fine particle content of 6.9%, and an inorganic filler content of 25.5%. , A curing agent content of 24.5%, a curing accelerator content of 1.5%, a silane coupling agent content of 2%, and a solvent content of 18.5%.
- Table 14 shows the physical properties of the sealant composition (E22) for liquid crystal display cell sealants. Using the liquid crystal display cell sealing compound composition (E22), a bonding seal test was performed in the same manner as in Example 1. Table 14 shows the results of the bonding seal test and the seal durability test. The obtained cell was found to have complete cohesive failure of the adhesive in the cell wedge opening test, and was found to have excellent adhesion reliability. The display function after 1000 hours of the seal function durability test was good.
- Example 23 shows the physical properties of the sealant composition (E22) for liquid crystal display cell sealants.
- the liquid crystal display cell sealant composition (E23) excluding the gap control agent had an epoxy resin content of 22.5%, a rubber-like polymer fine particle content of 7.5%, an inorganic filler content of 24.5%, It consists of a curing agent content of 23%, a curing accelerator content of 2%, a silane coupling agent content of 2.5%, and a solvent content of 18%.
- Table 14 shows the physical properties of the sealant composition (E23) for liquid crystal display cell sealants. Using the composition for a liquid crystal display cell sealing agent (E23), a bonding seal test was performed in the same manner as in Example 1. Table 14 shows the results of the bonding seal test and the seal durability test. The obtained cell was partially cohesive failure of the adhesive in the cell open test, which proved that the adhesion reliability was good. The display function after 1000 hours of the seal function durability test was good.
- Example 24
- the composition for liquid crystal display cell sealant (E24) excluding the gap control agent has an epoxy resin content of 22.5%, a rubber-like polymer fine particle content of 7.5%, and an inorganic filler content of 24.5%. , A curing agent content of 23%, a curing accelerator content of 2%, a silane coupling agent content of 2.5%, and a solvent content of 18%.
- Table 14 shows the physical properties of the sealant composition (E24) for liquid crystal display cell sealants. Using a composition for a liquid crystal display cell sealing agent (E24), a bonding seal test was conducted in the same manner as in Example 1. Table 14 shows the results of the bonding seal test and the seal durability test. The obtained cells showed partial cohesive failure of the adhesive in the cell wedge opening test, and it was found that the adhesion reliability was good. The seal function durability test 1 The display function after 000 hours passed was good.
- Example 25 shows the physical properties of the sealant composition (E24) for liquid crystal display cell sealants.
- the composition for liquid crystal display cell sealant (E25) excluding the gap control agent had an epoxy resin content of 22.5%, a rubber-like polymer fine particle content of 7.5%, an inorganic filler content of 24.5%, It consists of a curing agent content of 23%, a curing accelerator content of 2%, a silane coupling agent content of 2.5%, and a solvent content of 18%.
- Table 14 shows the physical properties of the sealant composition (E25) for liquid crystal display cell sealants. Using the composition for a liquid crystal display cell sealing agent (E25), a bonding seal test was performed in the same manner as in Example 1. Table 14 shows the results of the bonding seal test and the seal durability test. The obtained cells showed partial cohesive failure of the adhesive in the cell wedge opening test, and it was found that the adhesion reliability was good. The display function after 1000 hours of the seal function durability test was good.
- the composition for liquid crystal display cell sealant (E26) excluding the gap control agent had an epoxy resin content of 37.2%, a rubber-like polymer fine particle content of 7.8%, an inorganic filler content of 21.3%, It has a curing agent content of 29%, a curing accelerator content of 3.2%, and a silane coupling agent content of 1.5%.
- Table 14 shows the physical properties of the sealant composition (E26) for liquid crystal display cell sealants.
- E26 liquid crystal display cell sealant composition
- Composition comprising conductive beads manufactured by Sekisui Fine Chemical Co., Ltd. and 100 parts of liquid crystal display cell sealant composition (E5) of the present invention prepared in Example 5, and 5.28 parts of trade name "Micropearl AU_205”. (E27) was obtained.
- Table 14 shows the physical properties of the sealant composition (E27) for liquid crystal display cell sealants.
- a bonding seal test was performed using the composition for liquid crystal display cell sealing agent (E27) in the same manner as in Example 1.
- Table 14 shows the results of the bonding seal test and the seal durability test. The obtained cell was found to have excellent adhesion reliability due to partial cohesive failure of the adhesive in a cell wedge opening test. In addition, the display function was good after 1000 hours of the seal function durability test.
- Table 14 shows the physical properties of the sealant composition (E28) for liquid crystal display cell sealants.
- a bonding seal test was performed using the liquid crystal display cell sealing compound composition (E28) in the same manner as in Example 1.
- Table 14 shows the bonding seal test results and the seal durability test results. The obtained cells showed partial cohesive failure of the adhesive in the cell wedge opening test, which proved to be excellent in adhesion reliability. Also, the seal function durability test The display function after 1000 hours of the experiment was good.
- the composition for a liquid crystal display cell sealant of the present invention has a low water absorption of 2% or less as measured by immersing the cured product in boiling water for 30 minutes. It is clear that it has features. Also,
- the cured product has 80 low moisture permeability
- the liquid crystal display device manufactured using the composition for a liquid crystal display cell sealant of the present invention has high functionality in which the sealing function durability exceeds 100 hours.
- the composition for a liquid crystal display cell sealant containing a large amount of free ions lacks the display function durability and, at the same time, uses dihydrazide as a main curing agent.
- the epoxy resin composition has a problem of having a high water absorption exceeding 2%, and Comparative Example 3 does not contain the curing accelerator of the present invention as a component of the composition for a liquid crystal display cell sealant of the present invention. However, only uncured or brittle cured products are obtained.
- Comparative Example 4 is an example using 2-ethyl-4-methylimidazole well known as a curing accelerator, but the sealant has no pot life aptitude and has a fatal problem in coating workability. Furthermore, in Comparative Example 5, triphenylphosphine, which is well known as a hardening accelerator, was used. However, as in Comparative Example 4, the pot life was extremely short, and there was a fatal problem in coating workability. It became clear. Comparative Examples 6 and 7 are examples in which the amount of the curing agent is too small or too large.Either of them shows poor curing or poor adhesion, and is clearly not suitable for manufacturing a liquid crystal display cell. It is. In Comparative Examples 8 and 9, there were no or excessive hardening accelerators, but the former had poor curing and lacked adhesiveness, and the latter had hard and brittle hardened products, and had gaps. It is clear that controllability and adhesiveness are significantly lacking.
- the liquid crystal display element using the liquid crystal display cell sealing agent of the present invention or the liquid crystal display element manufactured using the liquid crystal display cell sealing agent composition can ensure long-term display stability in a high-temperature and high-humidity environment. Is the feature. Industrial applicability
- the composition for a liquid crystal display cell sealant of the present invention enables the production of a liquid crystal display panel which maintains a stable liquid crystal display element function for a long time even under high temperature and high humidity, and is applicable to a single-wafer press heat bonding method.
- the liquid crystal display device manufactured using the device can be preferably used as a display used in watches, desk calculators, televisions, mobile phones, various mopile devices, personal computers, electronic notebooks, vehicles, and the like.
- liquid crystal display cell sealant composition having an anisotropic conductive function of the present invention may be applied to, for example, a metal terminal and a semiconductor element of a microfabricated circuit board, and on a substrate on which the IC is mounted.
- a sealant for forming an organic EL element, a sealant for forming a flat panel display employing an in-brain electrophoresis method, a sealant for forming a paper-like display using a film type liquid crystal, an organic solar cell panel It can be widely used as a sealant for manufacturing and electrical insulating paint.
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- Crystallography & Structural Chemistry (AREA)
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Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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KR1020017010352A KR20010102160A (ko) | 1999-12-14 | 2000-12-13 | 액정표시셀용 실링제, 액정표시셀실링제용 조성물 및액정표시소자 |
EP00981684A EP1153952A4 (en) | 1999-12-14 | 2000-12-13 | SEALANT FOR LIQUID CRYSTAL DISPLAY CELL, COMPOSITION FOR SEALING LIQUID CRYSTAL DISPLAY CELLS AND LIQUID CRYSTAL DISPLAY ELEMENT |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP11/353846 | 1999-12-14 | ||
JP35384699 | 1999-12-14 | ||
JP2000-180661 | 2000-06-16 | ||
JP2000180661 | 2000-06-16 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US09890564 A-371-Of-International | 2001-08-02 | ||
US10/682,438 Division US20040075802A1 (en) | 1999-12-14 | 2003-10-10 | Sealant for liquid crystal display cell, composition for liquid crystal display cell sealant and liquid crystal display element |
Publications (1)
Publication Number | Publication Date |
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WO2001044342A1 true WO2001044342A1 (en) | 2001-06-21 |
Family
ID=26579936
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2000/008814 WO2001044342A1 (en) | 1999-12-14 | 2000-12-13 | Sealing agent for liquid-crystal display cell, composition for sealing agent for liquid-crystal display cell, and liquid-crystal display element |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1153952A4 (ja) |
KR (1) | KR20010102160A (ja) |
CN (1) | CN1346375A (ja) |
WO (1) | WO2001044342A1 (ja) |
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Publication number | Priority date | Publication date | Assignee | Title |
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WO2003011939A1 (en) * | 2001-08-03 | 2003-02-13 | Dsm N.V. | Curable compositions for display devices |
WO2014148270A1 (ja) * | 2013-03-21 | 2014-09-25 | 日本化薬株式会社 | 液晶シール剤及びそれを用いた液晶表示セル |
JPWO2014148270A1 (ja) * | 2013-03-21 | 2017-02-16 | 日本化薬株式会社 | 液晶シール剤及びそれを用いた液晶表示セル |
CN112852367A (zh) * | 2021-03-08 | 2021-05-28 | 南宁珀源能源材料有限公司 | 一种双组份硅棒拼接胶及其制备方法 |
Also Published As
Publication number | Publication date |
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CN1346375A (zh) | 2002-04-24 |
EP1153952A1 (en) | 2001-11-14 |
EP1153952A4 (en) | 2004-04-28 |
KR20010102160A (ko) | 2001-11-15 |
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