CN100398621C - Curing resin composition and sealants and end-sealing materials for displays - Google Patents

Abstract

A curing resin composition which can give a liquid crystal display reduced in color irregularity when used as a sealant or end-sealing material in the production of a liquid crystal display, because any component of the composition is not dissolved in a liquid crystal material and therefore does not contaminate a liquid crystal material, and which is suitable for production of a display particularly by drop fill assembly technique by virtue of its being excellent in storage stability; and sealants and end-sealing materials for displays, prepared by using the composition. Particularly, a curing resin composition useful as a sealant or end-sealing material for displays, which comprises a curing resin and a photopolymerization initiator and/or a curing agent, has both carbonyl groups resulting from (meth)acrylic groups and epoxy groups and/or hydroxyl groups resulting from epoxy groups, and gives a cured article having a nitrogen content of 3 to 10 atomic % based on the total amount of carbon, hydrogen, and nitrogen of the article, a volume resistivity of 1 x 10<13> OMEGA -cm or above, a permittivity of 3 or above at 100 kHz, and a glass transition temperature of 80 to 150 [deg.]C.

Description

Curable resin composition and be used for the sealing agent and the end-blocking material of indicating meter

The application be the PCT international filing date be on May 16th, 2002, national applications number be 02809973.7, denomination of invention divides an application for the application of " curable resin composition and be used for the sealing agent and the end-blocking material of indicating meter ".

Technical field

The present invention relates to a kind of curable resin composition, said composition seldom makes liquid crystal pollute owing to its component is eluted in the liquid crystal material, therefore, when making liquid crystal display device, under with the situation of said composition as the end-blocking material of the sealing agent of liquid crystal display device or liquid crystal display device, said composition seldom causes the ununiformity of color in liquid-crystal display, said composition also has excellent storge quality, therefore, said composition is suitable for making display equipment most, be specially adapted to make display equipment, the invention still further relates to sealing agent that is used for display element that uses said composition and the end-blocking material that is used for display element with a step drippage completion method (one drop fill process).

Background technology

It is to make liquid crystal display device such as liquid-crystal display groove traditionally: the transparent substrates that two support electrodes are set face-to-face with predetermined distance with following method, with sealing agent its periphery is sealed, form a groove, by the liquid crystal injecting port that is formed in the slot part liquid crystal is injected groove, liquid crystal injecting port is sealed with sealing agent or end-blocking material.

In the method, at first, in the transparent substrates of two support electrodes, form seal pattern by silk screen print method with thermosetting encapsulants on one with liquid crystal injecting port, then under 60-100 ℃ by prebake with the solvent seasoning in the sealing agent.Accompany betwixt then under the situation of partition two basal surface opposites placed, arrange, bonding mutually, at 110-220 ℃ of following hot pressing 10-90 minute, after near the gap adjustment the sealing agent,, that sealing agent is partly solidified 110-220 ℃ stove internal heating 10-120 minute.Inject liquid crystal by liquid crystal injecting port then, use end-blocking material seal liquid crystal injecting port at last, make liquid crystal display device.

But, there is following problems in this manufacture method: because the inhomogeneous dislocation that causes in hot pressing, gap, the destruction of adhesion strength between sealing agent and the substrate: the foam that the thermal expansion of residual solvent forms causes the displacement of the inhomogeneous and sealing agent in gap: curing sealant needs for a long time: prebake technology is very complicated: because solvent evaporation makes that the usable time of sealing agent is very short: injection liquid crystal needs for a long time: or the like.At first, in recent large-scale liquid crystal display, injecting liquid crystal needs to have become for a long time a very serious problem.

For this reason, people study the liquid-crystal display manufacture method with photocuring and thermal cure sealants always, a just so-called step drippage completion method.In a step drippage completion method, at first form the rectangular seal pattern by silk screen print method in the transparent substrates of two support electrodes.Then under the sealing agent its uncured state with liquid crystal carefully on dropping whole at the whole framework of transparent substrates, another transparent substrates of lamination with UV radiation exposure sealing position, is solidified temporarily immediately.Then, when liquid crystal is annealed, carry out actual curing, make liquid crystal display device by heating.If substrate bonds under negative pressure mutually, then can be with high efficiency system liquid making crystal display element.Can expect that in future a step drippage completion method becomes the main flow of making liquid crystal display.

The example of the sealing agent that uses in the traditional method has among Japanese kokai publication hei 6-160872,1-243029,7-13173,7-13174, the 7-13175 etc. the disclosed liquid crystal sealing agent that mainly contains (methyl) acrylate in the disclosed binding agent that mainly contains part (methyl) acrylated ((meth) acrylated) bisphenol A type epoxy resin and Japanese kokai publication hei 7-13174.

But the polarity number of these sealing agents and the polarity number of liquid crystal material are approximate, and the two has avidity mutually.Therefore, when dripping completion method assembly liquid crystal display device with this sealing agent by a step, the component in the sealing agent may be eluted in the liquid crystal, causes the liquid crystal aligning disorder in the sealing agent peripheral part, and causes disappearance to show, as it is inhomogeneous to develop the color.Particularly because a step drippage completion method relates to the step that uncured sealing agent and liquid crystal are directly contacted, so this component in the sealing agent has become serious problems to the pollution of liquid crystal.In addition, in above-mentioned sealing agent, comprise that the problem of the sealing agent existence of heat-curable component is that its stability in storage at room temperature is on duty mutually, therefore need under freezing state, store, when thawing or in case thaw and will be polluted by water, it at room temperature thickens, so must use at short notice.In addition, only using under the situation of rayed curing sealant, its moisture resistance is poor, and the curing degree of light shield part is low.

Also have the problem relevant with resistates, the example of resistates has: solidify the solidifying agent that contains in unreacted polymerization starter in back and the sealing agent; Ionic impurity such as chlorine etc.; And silane coupling agent.Because the application of liquid crystal board in automotive field can be saved energy consumption, so tend to the liquid crystal (low-voltage type liquid crystal) that uses energizing voltage low these years.The low-voltage type liquid crystal is easy to suck impurity, and As time goes on, this helps to cause extra high dielectric anisotropy, is easy to cause orientation disorder, reduces voltage retention.That is, because the solidifying agent of impurity as containing in unreacted polymerization starter after solidifying and the sealing agent; Ionic impurity such as chlorine; And the suction of silane coupling agent, As time goes on and the problem that orientation disorder and voltage retention reduce cause such as.

For this reason, people are studying the countermeasure always, as reducing the amount of the polymerization starter that contains in the sealing agent, perhaps make polymerization starter have very high molecular weight.But this method not only can not fully suppress the wash-out to liquid crystal, but also reduces reactively, causes needing a large amount of light for curing sealant etc., and liquid crystal is caused negative impact.

In addition, as for ionic impurity, Japanese kokai publication hei 5-295087 discloses a kind of by water or organic solvent washing sealing agent, end-blocking material and raw material thereof, carries out the method for negative pressure drying with deionizing impurity then.But this method needs very complicated technology, and in addition, this method also causes some problems sometimes: if sealing agent after the washing or end-blocking material is dry insufficient, then with residual solvent, or in drying step, when negative pressure gelling will take place.

Be used for the curable resin composition of sealing agent or end-blocking material can rough segmentation for by main reagent and solidifying agent being mixed the two liquid types (two-liquid type) of use and containing the liquid type (one-liquid type) of solidifying agent in advance.Although two liquid type compositions can at room temperature solidify, cured resin (main reagent) and solidifying agent should separate storage, need that in use each component is measured the back and mix, so its storage and handle very complicated.In addition, because working life is limited,, needs frequently to mix, thereby cause inefficiency so a large amount of various components can not be pre-mixed.On the contrary, as for a liquid type composition, between the shelf lives, reacting in some cases, so need improve its stability in storage.Therefore, under with the situation of Resins, epoxy, be known with the liquid type curable resin composition of Dyhard RU 100 as solidifying agent as cured resin.But the resin combination requirement is not less than 160 ℃ curing high temperature, can not satisfy the requirement of " low temperature and short period of time solidify " that always require in recent years like this.As the system that can satisfy " low temperature and short period of time solidify ", proposition following method arranged: propose among the Japanese kokai publication sho 62-146915 with the affixture of amine and epoxy compounds method as solidifying agent; Propose among the Japanese kokai publication hei 2-292325 with the method for the imidazoles of being sealed by poly-(methyl methacrylate) as solidifying agent; And propose among the Japanese kokai publication sho 59-59720 make the method for aminated compounds powder surface inerting with isocyanic ester.But these methods are very complicated, also exist a large amount of unreacted amines etc. are eluted to problem in the liquid crystal.

Summary of the invention

The purpose of this invention is to provide a kind of curable resin composition, said composition seldom makes liquid crystal pollute owing to its component is eluted in the liquid crystal material, therefore, when making liquid crystal display device, under with the situation of said composition as the end-blocking material of the sealing agent of liquid crystal display device or liquid crystal display device, said composition seldom causes the ununiformity of color in liquid-crystal display, said composition also has excellent stability in storage, therefore, said composition is suitable for making display equipment most, be specially adapted to make display equipment with a step drippage completion method, purpose of the present invention also comprises provides sealing agent that is used for display element that uses said composition and the end-blocking material that is used for display element.

First invention is a kind of curable resin composition, sealing agent that said composition can be used for using in the display element or end-blocking material, said composition comprises cured resin and Photoepolymerizationinitiater initiater and/or solidifying agent, it has derived from the carbonyl of (methyl) acryl and epoxide group and/or derived from the hydroxyl of epoxide group, and the atomic ratio in all carbon atoms, hydrogen atom and the nitrogen-atoms summation in composition of the nitrogen-atoms in its solidifying product is 3-10%; Its volume resistance is 1 * 10 ¹³Ω .cm or higher; Specific inductivity when 100kHz is 3 or higher; Second-order transition temperature is 80-150 ℃.

Second invention is a kind of curable resin composition; sealing agent that said composition can be used for using in the display element or end-blocking material; said composition comprises cured resin and Photoepolymerizationinitiater initiater and/or solidifying agent; it has derived from the carbonyl of (methyl) acryl and epoxide group and/or derived from the hydroxyl and the oxirane skeleton of epoxide group, and its volume resistance is 10 ¹³Ω .cm or higher; Specific inductivity when 100kHz is 3 or higher; Second-order transition temperature is 80-150 ℃.

The solidifying product of the curable resin composition of first and second invention, the contact angle of itself and water is the 20-80 degree preferably.Its uncured form also preferably has 50 μ S/cm or lower water outlet ionic conductivity, 1.0 * 10 ⁶-1.0 * 10 ¹⁰The ratio resistance of Ω .cm.In addition, be used to have under the situation of the sealing agent of display element of light shield part or end-blocking material behind the curing reaction gelling of light shield part in use than preferably 70% or higher, preferably 50 ℃ or higher of second-order transition temperatures.

In the curable resin composition of first and second invention, cured resin is preferably included in the compound that has one or more (methyl) acryls and epoxide group in the molecule.The compound that has one or more (methyl) acryls and epoxide group in molecule preferably includes hydroxyl and/or urethane bond; at least also have a molecular structure that is selected from biphenyl backbone, naphthalene skeleton, bis-phenol skeleton and phenolic varnish skeleton, its number-average molecular weight is 300 or higher.In addition, in curable resin composition, the equivalence ratio of (methyl) acryl and epoxide group preferably 4: 6-9: 1.

In the curable resin composition of first and second invention, preferably 100 ℃ or higher of the fusing points of solidifying agent.

The 3rd invention is a kind of Photoepolymerizationinitiater initiater, and it has reactive double bond and photoresponse causes part.The Photoepolymerizationinitiater initiater of the 3rd invention preferably has bitter almond oil camphor (ether) compound of reactive double bond and hydroxyl and/or urethane bond.Reactive double bond is (methyl) vinylformic acid residue preferably.Bitter almond oil camphor (ether) compound preferably has the molecular skeleton of following general formula (4) definition.

The 4th invention is a kind of coated solidifying agent, and wherein, the solid curing agent particulate is coated with particulate on the surface.As for the coated solidifying agent of the 4th invention, the weight ratio of solid curing agent particle and particulate preferably 3: 1-50: 1, the particle diameter of particulate preferably is not more than 10% of solid curing agent particle grain size, and the solid curing agent particle is preferably made by aminated compounds.

The 5th invention is a kind of curable resin composition, the silane compound of functional group of those shown in the group B shown in below the functional group of those shown in the group A shown in said composition can have below one or more being selected from by heating and one or more being selected from and the curable resin composition of first or second invention obtain, and it is characterized in that: the one or more residual ratios that are selected from the functional group of following group B in heating back are 10% or lower.Above-mentioned silane compound preferably has NH ₂And/or NH group.

Group A:---OCH ₃,---OC ₂H ₅

Group B:---NH ₂,---NH,---SH,

——NCO，

The 6th invention is a kind of silane coupling agent, and it comprises the imidazoles silane compound of the structure of utilizing spacer (spacer group) binding imidazoles skeleton and alkoxysilyl.

The curable resin composition of first and second invention preferably includes the coated solidifying agent of the Photoepolymerizationinitiater initiater of the 3rd invention, the 4th invention or the silane coupling agent of the 6th invention.

Curable resin composition of the present invention preferably also contains the useful at least a compound that is selected from imidazoles silane compound, epoxy silane compounds and amino silane compounds with structure of utilizing spacer binding imidazoles skeleton and alkoxysilyl and carries out the surface-treated filler.

The 7th invention is a kind of production method of curable resin composition, and it comprises at least: the step 1 that the ionic adsorption solid is contacted with curable resin composition makes ionic adsorption solid and curable resin composition separation steps 2.In above-mentioned steps 1, preferably when 40-100 ℃ of heating, the ionic adsorption solid is contacted with curable resin composition.Preferably, above-mentioned ionic adsorption solid contains aluminium, and is a kind of layered inorganic compound, and layered inorganic compound is the hydrotalcite compounds of group preferably.

The curable resin composition that comprises first invention in the composition that obtains with the production method of the curable resin composition of the 7th invention.

The 8th invention is a kind of sealing agent that is used for display element, and the sealing agent obtains with curable resin composition of the present invention.

The 9th invention is a kind of end-blocking material that is used for display element, and this end-blocking material obtains with curable resin composition of the present invention.

Use the display equipment of the end-blocking material that is used for display element of the sealing agent that is used for display element of the 8th invention and/or the 9th invention to be also included within the present invention.

The accompanying drawing summary

Fig. 1 is demonstration forms luminous display layer in the manufacture method of OLED display a synoptic diagram.Fig. 2 is demonstration forms organic luminous layer in the manufacture method of OLED display a synoptic diagram.Fig. 3 is the synoptic diagram of demonstration OLED display structure.

Embodiment

The present invention is described in detail in detail below.

The curable resin composition of first invention is used for sealing agent or the end-blocking material that display element uses, and said composition contains cured resin and Photoepolymerizationinitiater initiater and/or solidifying agent, has following performance after the curing.Because have these performances, so have excellent and cohesiveness substrate as the curable resin composition of the present invention of sealing agent that uses in the liquid crystal display device or end-blocking material, can not go into liquid crystal and pollute liquid crystal owing to its component wash-out, also can not cause the orientation disorder of liquid crystal, voltage retention is reduced.

That is, solidifying under the situation that laggard row element analyzes, what curable resin composition of the present invention had a 3-10% atom is expressed as the atomic ratio of nitrogen-atoms in carbon atom, hydrogen atom and nitrogen-atoms summation.When atomic ratio was lower than for 3% atomic time, under with the situation of said composition as sealing agent or end-blocking material, the bad adhesion of itself and substrate, when atomic ratio was higher than for 10% atomic time, moisture resistance is poor.

Can calculate the atomic ratio of above-mentioned nitrogen-atoms with following formula (1):

The atomic ratio of nitrogen-atoms (%)={ (nitrogen-atoms sum)/(the total number of carbon atoms+hydrogen atom sum+nitrogen-atoms sum) } * 100 (1)

The volume resistance value of the curable resin composition of first invention after curing is 1 * 10 ¹³Ω .cm or higher.When less than 1 * 10 ¹³During Ω .cm, this means that curable resin composition of the present invention contains ionic impurity, under with its situation as sealing agent or end-blocking material, ionic impurity is eluted in the liquid crystal when applying electric field, this will influence liquid crystal operation voltage, cause disappearance to show (defectivedisplay).

The curable resin composition of first invention is 3 or higher at the specific inductivity (than specific inductivity) during at 100kHz after the curing.As for the specific inductivity of liquid crystal, in general, when specific inductivity less than 3 the time, ε _//(parallel) is about 10, ε _⊥(vertically) is about 3.5, and curable resin composition will be eluted in the liquid crystal, and this will influence liquid crystal operation voltage, causes disappearance to show.

The second-order transition temperature of the curable resin composition of first invention after curing is 80-150 ℃.When temperature was lower than 80 ℃, with under the situation of said composition as sealing agent or end-blocking material, the moisture resistance of said composition (high temperature resistance high humidity performance) was poor, and when temperature was higher than 150 ℃, the rigidity of said composition was too big, the bad adhesion of itself and substrate.

Incidentally, above-mentioned second-order transition temperature is to be 5 ℃/min at temperature rise rate, and frequency is the value of measuring with the DMA method under the condition of 10Hz.But, need a large amount of samples because measure second-order transition temperature, so preferably under temperature rise rate is the condition of 10 ℃/min, surveying under the situation that can only obtain small amount of sample with the DSC method with the DMA method.In general, the second-order transition temperature of measuring with the DSC method hangs down 30 ℃ than the second-order transition temperature of measuring with the DMA method approximately.Therefore, measuring under the situation of second-order transition temperature with the DSC method, the second-order transition temperature of the solidifying product of the curable resin composition of first invention is 50-120 ℃.

The curable resin composition of first invention has derived from the carbonyl of (methyl) acryl and epoxide group and/or derived from the hydroxyl of epoxide group.

Second invention is a kind of curable resin composition, sealing agent that said composition can be used for using in the display element or end-blocking material, it is characterized in that: said composition comprises cured resin and Photoepolymerizationinitiater initiater and/or solidifying agent, and it has derived from the carbonyl of (methyl) acryl and epoxide group and/or derived from the hydroxyl of epoxide group; The oxirane skeleton; Its volume resistance is 10 ¹³Ω .cm or higher; Specific inductivity when 100kHz is 3 or higher; Second-order transition temperature is 80-150 ℃.

As for the solidifying product of the curable resin composition of second invention, its volume resistance, the specific inductivity when 100kHz and second-order transition temperature all with first invention in identical.

The curable resin composition of second invention has the oxirane skeleton, preferred propylene oxide skeleton.Therefore can suppress to solidify the contraction that causes, the cohesiveness of itself and substrate is very excellent.

The solidifying product of the curable resin composition of first and second invention and the contact angle of water be the 20-80 degree preferably.When spending less than 20, the variation of moisture resistance meeting sometimes, when spending greater than 80, said composition may be eluted in the liquid crystal before curing.

Can measure contact angle above-mentioned and water with following method: curable resin composition of the present invention is thin and be coated on the sheet glass equably, with resin solidification, form water droplet then thereon, measure contact angle with contact angle tester (for example contact angle tester of Kyowa Interface Science Co.Ltd production).

The uncured form of the curable resin composition of first and second invention preferably has following performance.Making in the method for liquid crystal cell with a step drippage completion method, because sealing agent or end-blocking material before solidifying contact with liquid crystal, so the very important point is will suppress the component of curable resin composition of first and second invention to the pollution of liquid crystal before curing.

The water outlet ionic conductivity of the uncured form of the curable resin composition of first and second invention (ion conductivity of extracted water) is 50 μ S/cm or lower preferably.When greater than 50 μ S/cm, this means that curable resin composition of the present invention contains ionic impurity, under with its situation as sealing agent or end-blocking material, ionic impurity is eluted in the liquid crystal, and liquid crystal operation voltage is caused negative impact, causes disappearance to show.Be more preferably 30 μ S/cm or lower.

Can measure above-mentioned water outlet ionic conductivity with following method: curable resin composition of the present invention is dissolved in the solvent, and the solution that obtains with the pure water extracting is measured the electric conductivity of the pure water that obtains with Conductivity Meters (for example Horiba, the ES-12 that Ltd produces).

The ratio resistance of the uncured form of the curable resin composition of first and second invention preferably 1.0 * 10 ⁶-1.0 * 10 ¹⁰Ω .cm.When less than 1.0 * 10 ⁶During Ω .cm, with it as sealing agent or end-blocking material and be eluted under the situation in the liquid crystal, they cause negative impact to liquid crystal operation voltage, cause disappearance to show.When greater than 1.0 * 10 ¹⁰During Ω .cm, the amount that is eluted in the liquid crystal is very big, is destroyed sometimes with the adhesion strength of substrate.

Make under the situation of liquid crystal display device by a step drippage completion method at the curable resin composition that is used as sealing agent or end-blocking material, being eluted in the liquid crystal of light shield part than the component of low crosslinking degree in the curable resin composition becomes a problem sometimes.That is, form a winding terminal of being made by thin metal layer in the peripheral part of liquid crystal display component, be used to provide the voltage of operation liquid crystal molecule, these parts of the light shield that shines from the substrate outside are called the light shield part.In general, in a step drippage completion method, in two substrates, form uncured hermetic unit and after inserting liquid crystal between the substrate, UV ray etc. shines on the hermetic unit, hermetic unit is solidified, temporarily then by the actual hermetic unit that solidifies of heating.But in light shield part, the UV ray that shines on the hermetic unit is not enough, and therefore, also residual sometimes have a lower curable resin composition of degree of crosslinking.

Under the situation of curable resin composition as sealing agent with light shield liquid crystal display device partly or end-blocking material with first and second invention, the gelling of the curable resin composition of first and second invention is than preferably 70% or higher behind the curing reaction, preferably 50 ℃ or higher of second-order transition temperatures.When gelling than less than 70% the time, curable resin composition is easy to be eluted in the liquid crystal sometimes.In addition, when second-order transition temperature was lower than 50 ℃, moisture resistance (high temperature resistance high humidity performance) was destroyed sometimes.In this case, second-order transition temperature is measured with the DMA method, since above-mentioned same, when measuring second-order transition temperature with the DSC method, preferably 20 ℃ or higher.

Can calculate above-mentioned gelling ratio with following method: the curable resin composition of first or second invention was soaked 24 hours, calculate with the dry weight before and after soaking in acetone.

Use following cured resin and select the curable resin composition of the solidifying agent of the Photoepolymerizationinitiater initiater of the 3rd invention, the 4th invention, the 5th invention as required and the silane coupling agent of the 6th invention can be given these performances of curable resin composition of first and second invention, in addition can also be as required produce these curable resin compositions with the production method of the curable resin composition of the 7th invention.

The hydrogen bond functional group of the curable resin composition of first and second invention value preferably 3 * 10 ^-3-5 * 10 ^-3Mol/g.Therefore these curable resin compositions can form hydrogen bond between molecule, under with their situations as sealing agent or end-blocking material, they are difficult to be eluted in the liquid crystal solidifying front and back, seldom pollute liquid crystal.

Above-mentioned hydrogen bond can be by adding compound formation, for example have in the molecule of these compounds such as-OH group ,-NH ₂Group ,-NHR group (R represents aromatic hydrocarbon or aliphatic hydrocarbon or derivatives thereof) ,-the COOH group ,-CONH ₂Group and-functional group of NHOH group or contain such as-NHCO-key ,-the NH-key ,-the CONHCO-key and-residue with hydrogen bond performance of NH-NH-key.At the compound with above-mentioned hydrogen bond functional group only is under the situation of simplification compound, and above-mentioned hydrogen bond functional group value is the value of calculating according to following formula (2).

Value (the H of hydrogen bond functional group _x) (mol/g)=(the hydrogen bond functional group number in the molecule of compounds X)/(molecular weight of compounds X) (2)

In addition, at the compound with hydrogen bond functional group is to contain under the situation of resin compound of multiple compound with above-mentioned hydrogen bond functional group, and above-mentioned hydrogen bond functional group value is by multiply by the value that various content (weight ratio) with compound of hydrogen bond functional group obtain in the unit weight.For example, when the compound with hydrogen bond functional group is made of compd A, compd B and Compound C, can be worth with following formula (3) definition hydrogen bond functional group.

Value (the H of hydrogen bond functional group _ABC)=H _AP _A+ H _BP _B+ H _CP _C(3)

(P _αThe weight ratio of expression compound α)

When hydrogen bond functional group is worth less than 3 * 10 ^-3During mol/g, the component of curable resin composition is easy to cause the liquid crystal aligning disorder by wash-out, when greater than 5 * 10 ^-3During mol/g, the moisture permeability height in the curing material, thus make water be easy to be penetrated into the inside of liquid crystal display device.

Compound with above-mentioned hydrogen bond functional group can be himself hydrogen bond functional group value those compounds in above-mentioned scope or the mixture of total adjusted two or more compounds in above-mentioned scope of hydrogen bond functional group value.That is, can use the compound of mean value in above-mentioned scope that comprises hydrogen bond functional group and hydrogen bond functional group value.

Above-mentioned cured resin preferably contains and all has one at least as (methyl) acryl of major constituent and the compound of epoxide group in each molecule.Can contain the compound that in a molecule, has only (methyl) acryl or epoxide group.The sealing agent or the end-blocking material that obtain with this compound that is used for cured resin can be light-cured type and thermohardening type, carry out interim binding by photocuring in advance, carry out completely solidified by thermofixation then, can generate with the display element that uses traditional thermosetting encapsulants or end-blocking material and compare liquid crystal display device with excellent gap precision.

In the specification sheets of asking in basis, (methyl) vinylformic acid is represented acrylic or methacrylic acid.

For in a molecule, having at least the compound of (methyl) acryl and epoxide group to be not particularly limited, for example can comprise Resins, epoxy that (methyl) is acrylic acid modified and (methyl) acryl Resins, epoxy of urethane modification etc.

The preferred example of the Resins, epoxy that above-mentioned (methyl) is acrylic acid modified is the phenolic resin varnish type epoxy resin and the bisphenol-type epoxy resin of part (methyl) acrylated; Biphenyl type epoxy resin, naphthalene type Resins, epoxy, three (hydroxyphenyl) alkyl type Resins, epoxy, four (hydroxyphenyl) alkyl type Resins, epoxy etc.

Resins, epoxy as above-mentioned (methyl) acrylic acid modified Resins, epoxy raw material can comprise phenolic varnish type, phenol phenolic varnish type, cresols phenolic varnish type, biphenyl phenolic varnish type, triphenol phenolic varnish type, Dicyclopentadiene (DCPD) phenolic varnish type etc., also have bisphenol A-type, Bisphenol F type, 2,2 ' diallyl bisphenol type, bisphenol S type, A Hydrogenated Bisphenol A type, polyoxypropylene bisphenol A-type etc. as bisphenol type.

In above-mentioned (methyl) acrylic acid modified Resins, epoxy, the example that is purchased has: as Epiclon N-740, Epiclon N-770 and Epiclon N-775 (by DainipponInk and Chemicals, Inc. produces), Epikote 152 and the Epikote 154 (producing by Japan EpoxyResin Co.) of phenol phenolic varnish type; Epiclon N-660, Epiclon N-665, Epiclon N-670, Epiclon N-673, Epiclon N-680, Epiclon N-695, EpiclonN-665-EXP, Epiclon N-672-EXP (by Dainippon Ink and Chemicals, Inc. produces) as the cresols phenolic varnish type.

For example, can in the presence of basic catalyst, make Resins, epoxy and the reaction of (methyl) vinylformic acid obtain the Resins, epoxy of above-mentioned part (methyl) acrylated with traditional method.The Resins, epoxy that appropriate change Resins, epoxy and (methyl) acrylic acid ratio of mixture can obtain having required acrylated rate.

For example, can obtain (methyl) acryl Resins, epoxy of above-mentioned urethane modification with following method.That is, can produce this resin: make polyvalent alcohol and two or higher functional isocyanate reaction, make (methyl) Acrylic Acid Monomer of reactor product and hydroxyl and the method for Racemic glycidol reaction then with following method; Under condition, make two or the method for higher functional isocyanic ester and (methyl) Acrylic Acid Monomer or Racemic glycidol reaction without polyvalent alcohol; Make the method for (methyl) acrylate that contains isocyanate group and Racemic glycidol reaction etc.Part, for instance, at first in the presence of tin-based catalyst, make the reaction of 1mol TriMethylolPropane(TMP) and 3mol isophorone diisocyanate, make continuously the isocyanate group that is retained in the compound that obtains with as the Hydroxyethyl acrylate of the Acrylic Acid Monomer of hydroxyl and be the Racemic glycidol reaction of the epoxy of hydroxyl, thereby generate this resin.

Above-mentioned polyvalent alcohol is not particularly limited, for example can comprises ethylene glycol, glycerine, Sorbitol Powder, TriMethylolPropane(TMP), (gathering) propylene glycol etc.

Above-mentioned isocyanic ester is not particularly limited, so long as two or higher functional getting final product, for example can comprise isophorone diisocyanate, 2, the 4-inferior cresyl vulcabond, 2, the 6-inferior cresyl vulcabond, hexamethylene diisocyanate, trimethyl hexamethylene diisocyanate, ditane-4,4 '-vulcabond (MDI), hydrogenation MDI, polymeric MDI, 1, the 5-naphthalene diisocyanate, norbornene alkyl diisocyanate, the tolidine vulcabond, eylylene diisocyanate (XDI), hydrogenation XDI, lysinediisocyanate, triphenylmethane triisocyanate, three (isocyano phenyl) thiophosphatephosphorothioate, tetramethylxylene diisocyanate, 1,6,10-undecane triisocyanate etc.

(methyl) Acrylic Acid Monomer to above-mentioned hydroxyl is not particularly limited, for example can comprise: as monomeric (methyl) Hydroxyethyl acrylate that a hydroxyl is arranged in the molecule, (methyl) Propylene glycol monoacrylate, (methyl) vinylformic acid hydroxy butyl ester etc., as monomeric epoxy (methyl) acrylate that two or more hydroxyls are arranged in the molecule, as bisphenol A modified epoxy (methyl) acrylate.They can use separately, also can two or more be used in combination.

In curable resin composition, the ratio of mixture of epoxide group and (methyl) acrylic acid groups is acryl preferably: epoxy group(ing)=4: 6-9: 1.When the equivalence ratio of (methyl) acrylic acid groups less than 4 the time, photoreactivity is destroyed, and therefore, not only can not carry out initial interim curing after gap adjustment even with the irradiate light sealing agent, and the quantitative change that is eluted in the liquid crystal is big.When greater than 9 the time, adhesion strength and moisture permeable are insufficient.Be more preferably 5: 5-8: 2.

From considering that with the low-affinity and the decontamination aspect of liquid crystal the above-mentioned compound that has (methyl) acryl and epoxide group at least preferably has hydroxyl and/or urethane bond.

The above-mentioned compound that has (methyl) acryl and epoxide group at least preferably has the molecular skeleton that at least one is selected from biphenyl backbone, naphthalene skeleton, bis-phenol skeleton and phenolic varnish skeleton.Thereby can improve the thermotolerance of curable resin composition of the present invention.

The number-average molecular weight of the above-mentioned compound that has (methyl) acryl and epoxide group at least preferably 300 or higher.When less than 300 the time, sometimes be easy to be eluted in the liquid crystal, be easy to cause the orientation disorder of liquid crystal.Number-average molecular weight preferably 3000 or lower.When greater than 3000 the time, sometimes be difficult to regulate viscosity.

Under with the above-mentioned situation of compound that has (methyl) acryl and epoxide group at least as cured resin; when the curable resin composition first invention solidifies back measurement IR absorption spectrum, can observe absorption peak derived from the carbonyl of (methyl) acryl.In addition, having under epoxide group and the situation, can also observe their peak derived from the hydroxyl of epoxide group.

Above-mentioned Photoepolymerizationinitiater initiater is not particularly limited, as long as can pass through rayed polymerizing curable compound component.But when using the Photoepolymerizationinitiater initiater of following the 3rd invention, can prevent that Photoepolymerizationinitiater initiater is eluted in the liquid crystal, therefore, this Photoepolymerizationinitiater initiater is preferred.

The 3rd invention is the Photoepolymerizationinitiater initiater with reactive double bond and photoresponse start bit.If the Photoepolymerizationinitiater initiater of the 3rd invention is added the curable resin composition of first or second invention, then can give its enough reactivity, this initiator can not be eluted in the liquid crystal, therefore can not pollute liquid crystal.Bitter almond oil camphor (ether) compound that at first preferably has reactive double bond and hydroxyl and/or urethane bond.Incidentally, bitter almond oil camphor (ether) compound comprises bitter almond oil camphor and bitter almond oil camphor (ether).

As above-mentioned reactive double bond; can exemplify residue such as allyl group, vinyl ether, (methyl) acryl; under with its situation as the Photoepolymerizationinitiater initiater that is used for sealing agent or end-blocking material, (methyl) acryl residue is owing to its high reactivity and by preferred.Because have such reactive double bond, so under the situation that it is added sealing agent or end-blocking material, can improve weathering resistance.

Above-mentioned bitter almond oil camphor (ether) compound can have in hydroxyl and the urethane bond one or both.When bitter almond oil camphor (ether) compound does not only have hydroxyl but also does not have urethane bond, their are being added under the situation of sealing agent or end-blocking material, they sometimes may be eluted in the liquid crystal before curing.

As for above-mentioned bitter almond oil camphor (ether) compound, although above-mentioned reactive double bond and hydroxyl and/or urethane bond can preferably have those compounds of the molecular skeleton of following general formula (4) definition in the optional position of bitter almond oil camphor (ether) skeleton.When during as Photoepolymerizationinitiater initiater, reducing the material residual quantity, can suppress the gas output with the compound with such molecular skeleton.

In general formula (4), R represents hydrogen or has 4 or the aliphatic hydrocarbon residue of carbon atom still less.When R represents carbonatoms greater than 4 aliphatic hydrocarbon residue, it is being added under the situation of Photoepolymerizationinitiater initiater, stability in storage increases, but in some cases may be owing to the substituent sterically hindered activity that reduces.

Bitter almond oil camphor (ether) compound with molecular skeleton of general formula (4) definition can be the compound with following general formula (5) definition including but not limited to this example.

In general formula (5), R represents hydrogen or has 4 or the aliphatic hydrocarbon residue of carbon atom still less; X represents to have 13 or bifunctional isocyanate's derivative residue of carbon atom still less; Y represent to have 4 or still less carbon atom the aliphatic hydrocarbon residue or constitute the carbon of residue and the atomic ratio of oxygen is 3 or lower residue.As X when being carbonatoms, sometimes can be easy to be dissolved in the liquid crystal greater than bifunctional isocyanate's derivative residue of 13.When Y is carbonatoms greater than 4 aliphatic hydrocarbon residue or constitutes the carbon of residue and the atomic ratio of oxygen during greater than 3 residue, sometimes can be easy to be dissolved in the liquid crystal.

As Photoepolymerizationinitiater initiater, one or more following other compounds can be used in combination: benzophenone, 2,2-diethoxy acetophenone, benzyl, benzoyl isopropyl ether, benzyl dimethyl ketal, 1-hydroxycyclohexylphenylketone, thioxanthone etc.

Above-mentioned Photoepolymerizationinitiater initiater is based on the add-on of 100 weight part cured resins 0.1-10 weight part preferably.When being less than 0.1 weight part, sometimes it causes photopolymerisable scarce capacity to reach this effect, when greater than 10 weight parts, can have a large amount of Photoepolymerizationinitiater initiaters and keep unreacted state, and this may cause the destruction of its weathering resistance.Add-on is more preferably 1-5wt%.

The effect of above-mentioned solidifying agent is to impel epoxide group in the curable resin composition and/or acryl reaction and crosslinked by heating, and improves the adhesion strength and the moisture resistance of curing after fixing resin combination by roll-in.As solidifying agent, preferably using fusing point is 100 ℃ or higher latent curing agent.When to use fusing point be 100 ℃ or lower solidifying agent, sometimes may greatly destroy stability in storage.

For example, solidifying agent can comprise: hydrazides (hydrazido) compound, and as 1,3-two [diazanyl carbon ethyl (hydrazinocarbonoethyl)-5-sec.-propyl glycolylurea]; Dyhard RU 100; Guanidine derivative; Imdazole derivatives, as 1-cyanoethyl-2-phenylimidazole, N-[2-(2-methyl isophthalic acid-imidazolyl) ethyl] urea, 2,4-diamino-6-[2 '-methylimidazolyl-(1 ')] ethyl-s-triazine, N, N '-two (2-methyl isophthalic acid-imidazolyl ethyl) urea, N, N '-(2-methyl isophthalic acid-imidazolyl ethyl) acyl amine (adipoamide), 2 phenyl 4 methyl 5 hydroxy methylimidazole, 2-phenyl-4,5-hydroxymethyl-imidazole etc.; The modified fat polymeric amide; Acid anhydrides is as Tetra Hydro Phthalic Anhydride, ethylene glycol bisthioglycolate (dehydration benzenetricarboxylic acid ester) etc.; The affixture of various amine and Resins, epoxy.They can use separately, also can two or more be used in combination.

Under the situation of the compound that all has (methyl) acryl and epoxide group with acrylic acid modified Resins, epoxy in as above-mentioned each molecule at least; the reactivity of acryl-Resins, epoxy has very big change with structure; under the situation of the Resins, epoxy that uses the urethane modification; even use the hyperergy solidifying agent also to have excellent stability in storage owing to its stability makes; simultaneously; under the situation of using (methyl) acrylic acid modified Resins, epoxy; reactivity is very high; therefore, consider that from the stability in storage aspect preferred use fusing point is 100 ℃ or higher and reactive low solidifying agent.

The ratio of mixture of above-mentioned solidifying agent and curing compound is 5-60 weight part ratio 100 weight parts preferably, more preferably 10-50 weight part ratio 100 weight parts.When exceeding above-mentioned scope, the adhesion strength and the chemical resistant properties of solidifying product descend sometimes, sometimes the performance of meeting rapid damage liquid crystal in high temperature and high humidity service test.

In addition, as above-mentioned solidifying agent, below the coated solidifying agent of the 4th invention be suitable.When with the coated solidifying agent of the 4th invention during as solidifying agent, even under the situation of a liquid type, also can obtain very high stability in storage.

The 4th invention is a kind of coated solidifying agent, and wherein, the solid curing agent particulate is coated with particulate on the surface.

The present inventor is found by result of study: by using coated solidifying agent (for being coated with the solid curing agent that is difficult to volatilization and is difficult to be dissolved in the particulate in the organic compound on its surface), even add the curable resin composition that solidifying agent also can access high storage stability in advance.

In the specification sheets of asking in basis, above-mentioned solid curing agent represents it at room temperature is solid state, can melt or softening by heating, thus the solidifying agent of beginning and cured resin reaction.Such solid curing agent is not particularly limited,, can exemplifies out solid amine compound, phenol compound and acid anhydrides as long as its fusing point or softening temperature are room temperature or higher temperature.At first preferred solid amine compound is because it has excellent reactivity at low temperatures.

Above-mentioned solid amine compound is illustrated in the solid compounds of one or more uncles to uncle's amino in the molecule, for example can exemplify out: aromatic amine, as tolylene diamine, diaminodiphenyl-methane; Imidazolium compounds is as glyoxal ethyline, 1,2 dimethylimidazole, 1-1-cyanoethyl-2-methylimidazole; Imidazolinium compounds is as the glyoxal ethyline quinoline; Dihydrazide compound is as sebacic dihydrazide, m-phthalic acid two hydrazides.The example of commercially available solid amine compound products has amine affixture such as Amicure PN-23 and Amicure MY-24 (producing by Ajinomoto Fine Techno Co.Inc.); Dyhard RU 100.

As above-mentioned polyhydric phenols, for example can exemplify out polyphenolic substance, phenolic varnish class phenolic resin etc.The example of the polyhydric phenols that can be purchased has Epikure 170, EpikureYL 6065 and Epikure MP402FPI (producing by Japan Epoxy Resin Co.Ltd).

For example, above-mentioned acid anhydrides can comprise glycerine two (dehydration benzenetricarboxylic acid ester), ethylene glycol bisthioglycolate (dehydration benzenetricarboxylic acid ester), Tetra Hydro Phthalic Anhydride, hexahydrophthalic anhydride, 4-methylhexahydrophthalic anhydride, 3-methyl tetrahydrophthalic anhydride etc.In these acid anhydrides, the example that is purchased product is Epikure YH306 and YH307 (producing by Japan Epoxy Resin Co.Ltd).

Be not particularly limited for above-mentioned solid curing agent particulate median size, but 0.1-50 μ m preferably.When less than 0.1 μ m, its surface is coated particle effectively sometimes, when greater than 50 μ m, solidifying agent sometimes can precipitate in storage process, perhaps sometimes inhomogeneous curing can take place under the situation that these solidifying agent particles is added curable resin composition.Be more preferably 0.5-10 μ m.

As applying above-mentioned solid curing agent particulate particulate, can be so that with oxide compound, oxyhydroxide, the halogenide of Si, Al, Ti, Fe, Mn, Mg etc., the crumb rubber that vinylbenzene pearl body, fine powder are broken etc.These particulates can use separately, also can two or more be used in combination.

The median size of above-mentioned particulate is 0.05 μ m or littler preferably.When greater than 0.05 μ m, these particles sometimes can not effectively be coated on the solid curing agent particulate surface.Be more preferably 0.03 μ m or littler.The particle diameter of particulate is 10% of a solid curing agent particle grain size preferably at the most also.When greater than 10% the time, sometimes can not fully manifest reactive controllability.

The weight ratio of solid curing agent particle and particulate preferably 3: 1-50: 1, when solid curing agent particulate weight ratio greater than 50 the time, sometimes can not fully manifest reactive controllability.When less than 3 the time, can cause solidifying the destruction of function in the time of excessive the having of particulate.Be more preferably 5: 1-20: 1.

Be not particularly limited for the method that applies the solid curing agent particle surface with particulate, the method that can exemplify has: with business-like mixing machine solid curing agent particle and particulate are mixed in container, make the method for this mixture homogenization etc. then.

The add-on of coated solidifying agent in curable resin composition of the 4th invention is preferably the 1-100 weight part based on 100 weight part curable resin compositions.When being less than 1 weight part, sometimes can fully not solidify, when greater than 100 weight parts, because residual excessive solidifying agent is arranged, so some physicalies of solidifying product such as toughness sometimes can be destroyed.

When mixing with cured resin when obtaining curable resin composition, because between the shelf lives at normal temperatures owing to its lip-deep particulate makes that solid curing agent and cured resin keep isolating to greatest extent, so the coated solidifying agent of the 3rd invention demonstrates very high stability in storage, when solidifying, by heating and making solid curing agent become liquid, thereby solidifying agent is contacted with cured resin, can not be subjected to the obstruction of particulate, thereby can be cured reaction fast.Therefore, the stability in storage of curable resin composition is improved.Produce the coated solidifying agent of the 4th invention in short period of time at normal temperatures very simply, do not need special reaction.

The curable resin composition of first and second invention preferably also contains silane coupling agent.Silane coupling agent mainly is with sealing agent or end-blocking material and liquid crystal display device substrate bonding as adhesive aid.In addition, for improve the resin that constitutes sealing agent or end-blocking material and according to the stress diffusional effect for improving adhesion property and improving reacting to each other between the inorganic or organic filler that linear expansion rate adds, silane coupling agent can be used for handling with it method of filling surface.

The 5th invention is a kind of curable resin composition, and said composition can have that at least one functional group that belongs to following radicals A and at least one belong to the silane compound of functional group of following radicals B and the curable resin composition of first or second invention obtains by heating.

Group A:---OCH ₃,---OC ₂H ₅

Group B:---NH ₂,---NH,---SH,

——NCO，

The concrete instance of above-mentioned silane compound is γ-An Bingjisanjiayangjiguiwan, γ-Qiu Jibingjisanjiayangjiguiwan, γ-Huan Yangbingyangbingjisanjiayangjiguiwan, γ-isocyanato-propyl trimethoxy silicane etc.These silane compounds can use separately, also can two or more be used in combination.Can improve the curable resin composition of the 5th invention and the adhesion strength of substrate with silane compound as silane coupling agent, and belong to the silane compound of functional group of group B by utilization and the chemical bond of cured resin can prevent to be eluted in the liquid crystal with this structure.

As for the curable resin composition of the 5th invention, behind the adding silane compound, heat.By heating, above-mentioned silane compound and cured resin component are carried out chamical binding by the functional group that belongs to group B.In order to improve reaction efficiency, preferably under the condition of agitating resin mixture, carry out above-mentioned heating.Stirring means is not particularly limited, can exemplifies out with the general method of motor rotation stirring with agitator or blade.Preferably 30-70 ℃ of thermal treatment temp.When being lower than 30 ℃, the negative side of silane compound and cured resin should sometimes carry out insufficient, when being higher than 70 ℃, may begin thermofixation.Be more preferably 40-60 ℃.Heat treatment time preferably 1-2 hour.When being shorter than 1 hour, the functional group of silane compound can not complete reaction, therefore, and product that sometimes can remained unreacted.

At least one residual ratio that belongs to the functional group of above-mentioned group B is 10% or lower after the thermal treatment.When greater than 10% the time, in that they react on resin Composition between the shelf lives, cause viscosity to increase, and owing to polluting liquid crystal to flow of liquid crystal.At least one belongs to the residual ratio of the functional group of above-mentioned group B can be based on usefulness ¹In the silane compound that H-NMR measures each functional group's peak intensity compare and thermal treatment after the calculating that compares.

The 6th invention is a kind of silane coupling agent, and it comprises the imidazoles silane compound of the structure of utilizing spacer binding imidazoles skeleton and alkoxysilyl.Glyoxaline structure under the storing temp of about room temperature seldom to responding property of cured resin, but can make it demonstrate reactivity to cured resin by heating, therefore, the curable resin composition of first or second invention that contains the silane coupling agent of the 6th invention has following all properties: it has excellent cohesive force and stability in storage; It seldom emits gas; Seldom pollute liquid crystal owing to seldom be eluted in the liquid crystal.

For example, above-mentioned imidazoles silane compound can comprise those compounds with following general formula (6) and following general formula (7).

In these two general formulas, R ¹-R ⁵Represent alkyl, hydrogen or methylol independently.At first preferably, R ¹And R ⁵Represent C independently _1-5Alkyl, hydrogen, methylol are considered from being easy to synthetic aspect, more preferably represent hydrogen, methyl, vinyl, methylol etc.In addition, R ²C preferably _1-20Alkyl, hydrogen or methylol are considered from being easy to synthetic aspect, more preferably hydrogen, methyl, ethyl, undecyl, heptadecyl, phenyl etc.In addition, R ³And R ⁴Difference is C preferably _1-3Alkyl is considered from being easy to synthetic aspect, more preferably hydrogen, methyl, ethyl etc.

In these two general formulas ,-SP-represents spacer, and it comprises the straight chained alkyl or the branched-chain alkyl that can include ester group, ether, carbonate group, urethane groups, amido, sulfuryl, ketone group, alkylidene group etc.At first, from suppressing to be eluted to aspect consideration the liquid crystal, preferably introduce urethane groups.In addition, from suppressing to be eluted to aspect consideration the liquid crystal, some hydrogen atoms of spacer are preferably replaced by high polar functional group, as such substituting group, can exemplify out halogen atom, hydroxyl, sulfydryl, carboxyl, amino etc.In addition ,-spacer of SP-definition preferably includes 1-20 the carbon atom that constitutes its main chain.When being less than 1, boiling point is lower, is easy to emission gases, sometimes can pollute liquid crystal, when greater than 20 the time, it is big that viscosity becomes, and makes the curable resin composition that obtains be difficult to handle, because the organoalkoxysilane equivalents is lower, thus unless increase add-on, its effect is difficult to manifest.More preferably 3-10 carbon atom.

For example, the compound of above-mentioned general formula (6) or general formula (7) definition can partly comprise those compounds that defined by following general formula (8) or following general formula (9).

The production method of the compound of above-mentioned general formula (8) definition can be for example to make 2, the method for 4-methylimidazole and γ-Huan Yangbingyangbingjisanjiayangjiguiwan reaction.On the other hand, the production method of the compound of above-mentioned general formula (9) definition can be the method that for example makes 2-phenyl-3-methyl-5-hydroxy methylimidazole and γ-isocyanato-propyl trimethoxy silicane reaction.

The add-on of imidazoles silane compound in curable resin composition of the 6th invention is preferably based on the 0.1-15 weight part of 100 weight part cured resins.When being less than 0.1 weight part, can not give its enough cohesive force, when greater than 15 weight parts, sometimes can reduce stability in storage.

The curable resin composition of first and second invention preferably contains the useful at least a compound that is selected from the imidazoles silane compound, epoxy silane compounds and the amino silane compounds that contain the imidazoles skeleton that utilizes spacer to make its mutual binding and alkoxysilyl and carries out the surface-treated filler.The adding effect of filler is owing to the stress diffusional effect is improved adhesion property and improved linear expansion rate.In addition, use the avidity that can increase filler and cured resin such as the silane coupling agent of the imidazoles silane compound, epoxy silane compounds and the amino silane compounds that contain the imidazoles skeleton that utilizes spacer to make its mutual binding and alkoxysilyl to the surface treatment of filler, at this moment, these silane coupling agents can not be eluted in the liquid crystal, perhaps can not pollute liquid crystal.

Above-mentioned filler is not particularly limited, for example can comprise mineral filler, as silicon-dioxide, diatomite, aluminum oxide, zinc oxide, ferric oxide, magnesium oxide, stannic oxide, titanium oxide, magnesium hydroxide, aluminium hydroxide, magnesiumcarbonate, barium sulfate, gypsum, Calucium Silicate powder, talcum, granulated glass sphere, sericite activated clay, bentonite, aluminium nitride, silicon nitride etc.; Organic filler is as polyester micropartical, polyurethane particulate, vinyl polymer particulate, rubber particle.

Shape to above-mentioned filler is not particularly limited, can be regular shape as sphere, needle-like, tabular, also can be amorphous.

Be used to handle filler the imidazoles silane compound amount preferably the imidazoles silane of 0.05-5 weight part than the filler of 100 weight parts.When being less than 0.05 weight part, surface treatment is carried out insufficient, causes its effect on cured resin insufficient, and when greater than 5 weight parts, excessive imidazoles silane is assembled filler, makes the curable resin composition that obtains be difficult to handle.More preferably 0.1-1 weight part.

Surface treatment method to above-mentioned filler is not particularly limited, and for example can comprise the method for the solution reaction with regulation pH value (acidity) that makes filler and obtain by dissolving and hydrolysis imidazoles silane compound etc. in water.

With above-mentioned imidazoles silane compound carry out the surface-treated filling adding amount preferably the filler of 5-100 weight part than the cured resin of 100 weight parts.When being lower than 5 weight parts, sometimes can not fully manifest such as the effect of improving adhesion property owing to the stress diffusional effect or improving linear expansion rate, when greater than 100 weight parts, sometimes viscosity can increase very big.More preferably 10-50 weight part.

For deionizing impurity from curable resin composition of the present invention and satisfy above-mentioned performance, preferably produce curable resin composition with the production method of the curable resin composition of following the 7th invention.

The 7th invention is a kind of production method of curable resin composition, and it relates to makes the step 1 that ionic adsorption solid and curable resin composition be in contact with one another and make ionic adsorption solid and curable resin composition separation steps 2.

Above-mentioned ionic adsorption solid is not particularly limited, gets final product, preferably use the compound of following general formula (10) definition so long as can adsorb the material that is present in the ionic impurity in the binding agent.

X _mY _n(Z _pO _q)W ₁.sH ₂O (10)

In this general formula, X represents Na ⁺, K ⁺Or Ca ²⁺Y represents Mg ²⁺, Fe ²⁺, Al ³⁺, Fe ³⁺, Ti ⁴⁺Or Mn ²⁺Z represents Si ⁴⁺Or Al ³⁺W represents OH ^-, Cl ^-, F ^-, CO ₃ ^2-M, n, p, q, r and s represent to be not less than 0 integer respectively.In addition, m, n, p, q, r and s preferably satisfy following equation (11).

2q+ra＝ma+na+pa (11)

In this equation, ra, ma, na and pa represent to make r, m, n and p to multiply by the value that ionic charge calculated in the above-mentioned general formula (10) respectively.

As the ionic adsorption solid, preferably those contain the solid of aluminium element, and more preferably those contain Al ³⁺Solid.Al ³⁺Content preferably satisfy following condition: in above-mentioned general formula (10), in total ionic atom of Y and Z, Al ³⁺Account for 5-80mol%.When being lower than 5mol%, the ionic adsorption amount sometimes can reduce, when being higher than 80mol%, and Al ³⁺Sometimes be easy to by wash-out.

As the ionic adsorption solid, preferably use layered inorganic compound.Layered inorganic compound is to have the unitary compound with regulation performance of laminate structure, because spacer structure, this compound has excellent designed capacity and gives the performance of function, and this compound has property and function, as two-dimentional physicals and ion-exchange capacity.

When using such layered inorganic compound, the atoms metal that is present in the layered inorganic compound interlayer can be caught ionic impurity, because laminate structure, has been hunted down and the ionic impurity that adsorbs is difficult to by wash-out once more.

Above-mentioned layered inorganic compound is layer silicate mineral preferably.

For example, above-mentioned layer silicate mineral can comprise the hydrotalcite compounds of group, serpentine-kaolin group's compound, talcum-pyrophyllite compounds of group, montmorillonite compounds of group, vermiculite compounds of group, mica compounds of group, interlayer defect micacization compound, brittle mica compounds of group, chlorite compounds of group, interbed mineral (interstratified minerals), diatomite, pure aluminium silicate etc.Preferably water talcum compounds of group and serpentine compounds of group.At first more preferably aluminium element content those mineral in above-mentioned scope, further preferred hydrotalcite compounds of group and the serpentine-kaolin group compound of aluminium element content in above-mentioned scope.Above-mentioned layer silicate mineral can be natural mineral or synthetic mineral.These layer silicate minerals can use separately, also can two or more be used in combination.

As above-mentioned hydrotalcite compounds of group, preferably use those compounds of following general formula (12) definition, wherein preferred Mg ₆Al ₂(OH) ₁₆CO ₃.4H ₂O.

Mg _n1Al _n2(OH) _r1(CO ₃) _r2.sH ₂O (12)

In this general formula, n1, n2, r1 and r2 represent to be not less than 1 integer independently; The relation of they and above-mentioned general formula (10) and (11) is: n=n1+n2, r=r1+r2.

For example, serpentine-kaolin group's compound can comprise lizardite, berthierine, amesite, cronstedtite, neopouite, manganese zoblizite, fraiponite, brindlleyite, kaolinite, dickite, nakrite, halloysite (plane), woddnite etc.

For example, above-mentioned talcum-pyrophyllite compounds of group can comprise talcum, willemite, cerolite, genthite, pyrophyllite, iron flake alabaster etc.

For example, above-mentioned montmorillonite compounds of group can comprise saponite, hectorite, sauconite, stevensite, hectorite, montmorillonite, beidellite, nontronite, rich volchonskoite etc.

In addition, above-mentioned vermiculite family mineral can comprise trioctahedron vermiculite, dioctahedron vermiculite etc.

For example, above-mentioned mica compounds of group can comprise biotite, phlogopite, iron mica, eastonite, siderophyllite, four iron micas (tetraferriannite), lithionite, polylithionite, white mica, celedonite, iron celedonite, iron aluminium celedonite, aluminium celedonite, tobelite, paragonite etc.

For example, above-mentioned interlayer defect mica family mineral can comprise dioctahedral type illite, glaukonine, brammallite, trioctahedron type (sodium phlogopite) etc.

For example, above-mentioned brittle mica family mineral can comprise xanthophyllite, barium magnesium brittle mica, bityite, barium iron brittle mica, margarite etc.

For example, above-mentioned chlorite family mineral can comprise chlonichlore, antelope stone, manganchlorite, nepouite, baileychlore, high mountain range chlorite, cookeite, mackensite etc.

For example, the interbed mineral can comprise vermiculite between green mud, hydro biotite, sliding between talcum, rectorite leng, enlightening standard width of a room in an old-style house montmorillonite, dozylite, lunijianlite, saliotite etc. between saponite, green mud.

Above-mentioned ionic adsorption solid is granular solids preferably, be easy to be separated from each other after curable resin composition contacts.Above-mentioned ionic adsorption solid shape is not particularly limited, and in order to increase and the contact probability of waiting to collect ionic impurity, its particle diameter is preferably very little.Blockage problem during for fear of filtration, preferably 2 μ m or bigger.

The production method of curable resin composition of the present invention comprises makes above-mentioned ionic adsorption solid and curable resin composition step 1 that is in contact with one another and the step 2 that ionic adsorption solid and curable resin composition are separated from each other.

In step 1, be not particularly limited for the method that ionic adsorption solid and curable resin composition are in contact with one another, can fill a cylinder and make curable resin composition pass through this cylinder with their mixing or with the ionic adsorption solid with whipping appts, planetary whipping appts, primary mixer etc., contact with this.In addition, in step 1, preferably under 40-100 ℃ of heating condition, ionic adsorption solid and curable resin composition are in contact with one another.When temperature is lower than 40 ℃, be difficult to improve ion-exchange solid surfactivity, sometimes be difficult to deionizing impurity.When being higher than 100 ℃, it is very sticking that the target curable resin composition becomes sometimes.More preferably 60-80 ℃.Incidentally, under the situation that ionic adsorption solid and curable resin composition are in contact with one another, should be according to the quantity and the suitable selection ionic adsorption of the type solid add-on of ionic impurity, but, based on the add-on of 100 weight part curable resin compositions 2-20 weight part preferably.When being less than 2 weight parts, the ability of its adsorbed ion impurity sometimes is not enough to produce required effect, when greater than 20 weight parts, and the not only excessive and waste of ionic adsorption solid, and also the mixture viscosity that obtains is very high, thus make filtration time-consuming.More preferably 7-15 weight part.

In above-mentioned steps 2, be not particularly limited for the method that above-mentioned ionic adsorption solid and curable resin composition are separated from each other, can exemplify out methods such as filtration, centrifugation.

The production method of the curable resin composition of the 7th invention preferably includes mixes ionic adsorption solid and curable resin composition the back recovery and refines ionic adsorption solid method, thereby ionic impurity is removed.If make the ionic adsorption solid let nature take its course not add recovery, then in the weathering test of hot and humid degree, the ionic impurity of refinement possibility quilt is wash-out once more.

The ionic impurity of all persons such as sodium ion, potassium ion, chlorion, vinylformic acid, methacrylic acid etc. is removed from the curable resin composition of producing with the production method of the curable resin composition of the 7th invention, thereby can prevent from they are eluted in the liquid crystal.

The 8th invention is a kind of sealing agent that is used for display element, and curable resin composition of the present invention is used in the sealing agent.The 9th invention is a kind of end-blocking material that is used for display element, and this end-blocking material uses curable resin composition of the present invention.

The end-blocking material that is used for display element of the sealing agent that is used for display element of the 8th invention and the 9th invention comprises the curable resin composition of first invention, therefore, they have very excellent stability in storage, and their component can not polluted liquid crystal because of being eluted in the liquid crystal before and after solidifying.

Be not particularly limited for the method for making display element with the end-blocking material that is used for display element of the sealing agent that is used for display element of the 8th invention or the 9th invention, for example, can use following method.

At first, the mode of opening with liquid crystal injecting port is coated on the sealing agent that is used for liquid crystal display device of the 7th invention one of transparent substrates (unorganic glass or plastic plate) of two support electrodes of ITO thin layer etc. with predetermined pattern.As coating process, can use silk screen print method, divider coating method etc.Two transparent substrates that obtain are placed face-to-face, accompany pad therebetween, suitably behind the location that they are stacked mutually.Use the hermetic unit of UV radiation exposure transparent substrates then, make their interim mutually bondings, in 100-200 ℃ stove, heated 1 hour then,, thereby make its completely solidified the sealing agent thermofixation.At last, inject liquid crystal,, make liquid crystal display device with the sealing agent encapsulated liquid crystals inlet that is used for liquid crystal display device of the present invention by liquid crystal injecting port.

For example, can also implement to make the method for liquid crystal display device with following step with a step drippage completion method, at first, with silk screen print method, divider coating method etc. with the sealing agent that is used for liquid crystal display device of the 7th invention with rectangular seal pattern application one in the transparent substrates of two support electrodes of ITO thin layer etc.Under the sealing agent its uncured state liquid crystal carefully on dropping whole at framework, being covered another transparent substrates immediately,, make the interim mutually bonding of substrate then with UV radiation exposure sealing position.Then, when liquid crystal is annealed, heat, carry out actual curing, make liquid crystal display device.

Using the display equipment of the end-blocking material that is used for display element of the sealing agent that is used for display element of the 8th invention or the 9th invention also is an invention.

Curable resin composition of the present invention can also be used to connect the sealing agent of sealing member in the making of OLED display.Fig. 3 is the synoptic diagram that OLED display is shown.

Because comprising, OLED display uses to the lower molecular weight organic materials of water sensitive and the face of high-energy particle formation, so need cover by becoming film formed face with the sealing member of making by metal, glass, evaporation of metal film etc.In this case, the technology before adhesive seals is carried out in a vacuum, when adhesive seals, with nitrogen purging sealing member inside, the difference of pressure and external pressure in eliminating, it is inner to prevent that like this atmosphere from infiltrating, and may prevent that therefore moisture from infiltrating inside.For example, with the mode that on a substrate of glass, the forms mask part that is bonded and sealed by evaporation aluminium, thereby shielding from the light of luminescent layer face, thereby make the UV ray can only be by the pattern part of sealing agent.With sealing agent substrate of glass and sealing member are bondd mutually then, to finish sealing.Therefore, sealing agent must be able to be resisted the infiltration of moisture.

Summarize the manufacture method of OLED display below.The substrate of using is to have switching element that is formed with TFT etc. on top surface and the substrate that is formed with the face of ITO film by sputter.At first, for pre-treatment to regulate mating surface electromotive force and cavitation layer (hole layer) surface potential, use vacuum UV ray in substrate, to produce ozone will be formed on the transparency electrode surface oxidation of the ITO thin layer on the substrate of glass from the UV light source.The formation method of luminous display layer is described with reference to figure 1 then.Carry out the CVD sputter, use SiO ₂Zona is around the peripheral part of ITO film.At SiO ₂Form on the film around luminous display layer that will become sub-pix and the wall made by the PI film.Below with reference to Fig. 2 (1) organic luminous layer is described.In substrate, form organic luminous layer, because should under the condition of separating atmospheric, handle the step from this step to the sealed light emitting layer, so in nitrogen or vacuum, carry out a series of these steps.At first on the ITO film, form the film of positive hole injection layer with the aromatic amine material.Form the positive hole moving layer of diamine derivative then thereon with ink jet printing method, undertaken crosslinkedly by heating, form luminescent layer thereon with ink jet printing method similarly, heating and curing in nitrogen then.Evaporation and stacked Alq3 as the electronic migration luminescent material again by the Al-Li of evaporation formation as negative electrode, thereby finish film forming forming process thereon.Begin sealing technology then, be used in the rete of formation and the seal box of isolated from atmosphere and stick in the substrate of support membrane.At first sealing agent is coated on the seal box that is used for isolated water and other energy with divider.The coating condition of this moment is identical with creating conditions of liquid crystal panel, is coated with sealing material incessantly, is used for the peripheral part around seal box.Eliminate for the foam that will contain in sealing agent and the seal box, in the atmosphere of 0.1Pa vacuum tightness, make sealing agent vacuum froth breaking, carry out adhesion step then.In this technology, in order to seal under the separating atmospheric condition, the box that is bonded and sealed in nitrogen makes its suprabasil organic luminous layer around support membrane, thereby makes OLED display.

Preferred forms of the present invention is described below.

Below with reference to embodiment in detail the present invention is described in detail, but the present invention is not limited to these embodiment.

(A) the phenol phenolic resin varnish of acrylic acid synthesizing modification

The liquid phase phenol phenolic varnish based epoxy resin (D.E.N.431, Dow Chemical Co. produces) of 1000 weight parts, the p-methoxyphenyl as polymerization starter of 2 weight parts, the triethylamine and 200 parts by weight of acrylic as catalysts of 2 weight parts were reacted 5 hours.By using quartz and kaolinic natural bonding product (Sillitin V85, the Hoffmann-Mineral GmbH ﹠amp that is filled with 10 weight parts; Co. cylinder production) filters the resin of 100 weight parts that obtain, and with the ionic impurity in the absorption reaction product, thereby obtains acrylic acid modified phenol phenolic resin varnish (50% part propylene acidifying product).

(B) the propylene oxide bisphenol A epoxide resin of acrylic acid synthesizing modification

The liquid phase polyoxyalkylene bisphenol A diglycidyl ether (EP 4000 S, AsahiDenka Kogyo K.K. produces) of 1440 weight parts, the p methoxy phenol as polymerization starter of 2 weight parts, the triethylamine and 200 parts by weight of acrylic as catalysts of 2 weight parts were reacted 5 hours.With the quartz that is filled with 10 weight parts and kaolinic natural bonding product (Sillitin V85, Hoffmann-Mineral GmbH ﹠amp; Co. cylinder production) filters the resin of 100 weight parts that obtain, and with the ionic impurity in the absorption reaction product, obtains acrylic acid modified propylene oxide bisphenol A epoxide resin (50% part propylene acidifying product).

(C) the part propylene acidifying compound of synthetic urethane modification

Stir and reflux conditions under under 60 ℃, make the reacting 2 hours of the BHT as polymerization starter, 0.01 weight part of TriMethylolPropane(TMP), 0.2 weight part of 134 weight parts as the dibutyl tin laurate of catalysts and the isophorone diisocyanate of 666 weight parts.When carrying air, add the Racemic glycidol of 25.5 parts by weight of acrylic 2-hydroxyl ethyl esters and 111 weight parts then, under stirring and reflux conditions, reacted 2 hours down at 90 ℃.With quartz that is filled with 10 weight parts and kaolinic natural bonding product (Sillitin V85, Hoffmann-Mineral Co. production) cylinder filters the resin of resulting 100 weight parts, with the ionic impurity in the absorption reaction product, thereby obtain the part propylene acidifying compound of urethane modification.

(embodiment 1)

Comprise the acrylic acid modified phenol phenolic resin varnish that the conduct (A) of 40 weight parts obtains, hide hydrazides type solidifying agent (the Amicure VDH of hot-setter of the part propylene acidifying compound of the urethane modification that the conduct of 20 weight parts (C) obtains and the conduct of 15 weight parts, Ajinomoto FineTechno Co.Inc production) curable resin composition, the Photoepolymerizationinitiater initiater 2 of 1 weight part, the 2-diethoxy acetophenone, the γ-Huan Yangbingyangbingjisanjiayangjiguiwan of silicon oxide particle of 23 weight parts (median size is 1.5 μ m) and 1 weight part is by three roller thorough mixing, make it become uniform liquid, so just obtained sealing agent.

The sealing agent that obtains with coating on divider in the transparent substrates of two support electrodes by this way, thus draw a rectangle frame.With thin the dripping on whole that is coated in the transparent substrates framework of liquid crystal (JC-5004LA, ChissoCorporation produces), another transparent substrates that superposes immediately is 50mW/cm with intensity with high voltage mercury lamp ²UV radiation exposure sealing position 60 seconds.Then, under 120 ℃, make liquid crystal annealing 1 hour, be used for thermofixation, thereby make liquid crystal display.

(embodiment 2)

Obtain sealing agent with similarly to Example 1 mode, just the part propylene acidifying product propylene that obtains with the conduct (B) of 20 weight parts replaces the part propylene acidifying product of the urethane modification that the conduct (C) of 20 weight parts obtains, with hydrazides type solidifying agent (NDH with 15 weight parts, JapanHydrazine Co.Inc production) the hydrazides type solidifying agent (AmicureVDH of replacement 15 weight parts, Ajinomoto Fine Techno Co.Inc produces), make liquid crystal display with the sealing agent.

(comparative example 1)

To contain 35 weight part urethane acrylate (AH-600, Kyoeisha Chemical Co.Ltd production), the curable resin composition of 15 parts by weight of acrylic acid 2-hydroxy butyl esters, 50 parts by weight of acrylic acid isobornyl thiocyanoacetates and 3 weight part benzophenones mixes, obtain uniform liquid, obtain photocuring class sealing agent, make liquid crystal display with the sealing agent.

(comparative example 2)

To contain 35 weight parts and not pass through the filtering acrylic acid modified phenol phenolic resin varnish (A) of cylinder, 1 weight part 2, the 2-diethoxy acetophenone, (Epikote 828 for 25 weight part bisphenol A epoxide resins, Japan Epoxy Resin Co.Ltd produces), 15 weight part hydrazides type solidifying agent (NDH, Japan Hydrazine Co.Inc produces), the curable resin composition of silica dioxide granule of 23 weight parts (median size is 1.5 μ m) and 1 weight part γ-Huan Yangbingyangbingjisanjiayangjiguiwan is by three roller thorough mixing, obtain uniform liquid, obtain sealing agent, make liquid crystal display with the sealing agent.

(comparative example 3)

To contain 50 weight part bisphenol A epoxide resins (Epikote 828 US, Japan Epoxy ResinCo.Ltd produces) and 25 weight part hydrazides type solidifying agent (NDH, Japan Hydrazine Co.Inc production) curable resin composition is by three roller thorough mixing, obtain uniform liquid, obtain sealing agent, make liquid crystal display with the sealing agent.

(comparative example 4)

With producing acrylic acid modified and Resins, epoxy (D) (50% part propylene acidifying product) the part propylene acidifying with (A) and mode together, just with 1 of 1000 weight parts, 4-butanediol diglycidyl ether (EX-214L, Nagase ChemteX Co. production) the phenol phenolic varnish based epoxy resin (D of replacement 1000 weight parts, E, N, 431, Dow Chemical Co. produces).

Obtain the photocuring sealing agent with similarly to Example 1 mode, the product (C) of part propylene acidifying that just replaces the urethane modification of the phenol phenolic resin varnish of 40 parts by weight of acrylic modifications and 20 weight parts with the Resins, epoxy (D) of the part propylene acidifying of 60 parts by weight of acrylic modifications is with sealing agent manufacturing liquid crystal display.

As for embodiment 1 and 2 and comparative example 1-4 in the sealing agent produced, with the water outlet ionic conductivity before the following method evaluate cure, than after resistance value, gelling ratio, second-order transition temperature, the curing nitrogen-atoms ratio, volume resistance, when the 100kHz specific inductivity, second-order transition temperature, with the contact angle and the stability in storage of water, and the color ununiformity of each liquid crystal display of manufacturing is estimated with following method.It the results are shown in table 1.

(the water outlet ionic conductivity of sealing agent before solidifying)

Each sealing agent of 12.5g before solidifying is dissolved in the 12.5g toluene, mixes with the 50g pure water again, stirred 30 minutes, water layer is partly separated, measure the ionic conductivity of water with ionic conductivity meter (Ltd produces for ES-12, Horiba) with centrifugal separation.

(the ratio resistance value of sealing agent before solidifying)

As for each sealing agent before solidifying, under standard temperature and humidity condition (20 ℃, 65%RH) use than ohmer (SR-6517 type, Toyo Corporation produce) and electrode (LE-21 type, the Ando Electoric Co.Ltd produces) mensuration that is used for liquid and compare resistance.

(the gelling ratio of sealing agent)

To measure the dry weight before and after soaking, with following formula calculating gelling ratio 120 ℃ of down heating 1 hour and each sealing agent of solidified soaked 24 hours in acetone.

Gelling is than (%)=(dry weight before the dry weight/immersion after the immersion) * 100.

(second-order transition temperature of sealing agent)

At temperature rise rate is that 5 ℃/min, frequency are to measure with the DMA method under the condition of 10Hz.

Aiming screen covers part and non-light shield is partly measured.

(solidifying the nitrogen-atoms ratio of back sealing agent)

Each sealing agent after solidifying is carried out ultimate analysis, calculate nitrogen-atoms than (%) with following formula (1).

Nitrogen-atoms is than (%)={ (nitrogen-atoms sum)/(the total number of carbon atoms+hydrogen atom sum+nitrogen-atoms sum) } * 100 (1)

(solidifying the volume resistance of back sealing agent)

Each sealing agent is thin and be coated on equably on the chromium deposition surface of the substrate of glass that deposits chromium, be cured by the UV irradiation then, forming size is the UV solidifying product of 3m for 85mm * 85mm, thickness, stack deposits the substrate of glass of chromium when the chromium deposition face is placed on UV solidifying product one side, applying load, on hot-plate,, generate test sample 120 ℃ of thermo-compression bondings 1 hour.The area of sealing agent (S (cm in the experiment with measuring sample ²)), (PA36-2A modulates direct supply with the constant voltage generating apparatus, Kenwood Corporation production) between the chromium deposition surface of the relative substrate of glass that deposits chromium, apply constant voltage (V (V)), measure mobile electric current (A (A)) in the film with amperometer (R 644C digital multimeter, Advantest Co.Ltd produces).When T represents the mould (T (cm)) of sealing agent, with following formula volume calculated resistance (Ω .cm):

Volume resistance (Ω .cm)=(V * S)/(A * T)

Under direct current 500V, applied voltage 1 minute.

(solidifying the specific inductivity of back sealing agent when 100kHz)

Each sealing agent is thin and be coated on equably on the substrate of glass, and then with sealant cures, forming size with this is that 60mm * 60mm, thickness are the test sample of 3m.With measure specific inductivity with electrode (HP 16451B, Yokokawa HP Co.Ltd produces) and LCR meter (4284A, Hewlett-Packard Ltd production) under 100kHz by electrode not contact process (gap method) measure according to ASTM D150.

(after the curing, the contact angle of sealing agent and water)

Each sealing agent is thin and be coated on equably on the substrate of glass, then with sealant cures, form test sample with this.After forming water droplet on the sample, measure with contact angle tester (the contact angle tester that KyowaInterface Science Co.Ltd produces).

(evaluation of stability in storage)

Estimate according to following standard.Before the curing after at room temperature storing for 1 week during the viscosity of each sealing agent with E type viscometer determining, if this viscosity number in the twice of initial viscosity value, then is designated as zero, if twice or higher, then be designated as *.

(evaluation of color ununiformity)

As for each liquid crystal display, leave standstill under with the condition of liquid crystal display and observe the color ununiformity that in liquid crystal, takes place in the peripheral part of hermetic unit before and after about 500 hours, based on the level Four standard liquid crystal pollution performance is estimated: ◎ (not having the color ununiformity fully) at 60 ℃ and 95%RH; Zero (seldom observing the color ununiformity); △ (observing slight color ununiformity); * (very clearly observing the color ununiformity).All use 5 samples to estimate for each part.

(embodiment 3)

(synthetic benzoin ether compd A)

0.4g potassium hydroxide is dissolved in the 5mL ethanol, adds the 200mL methyl-sulphoxide again, obtain a kind of solution.In this solution, dissolve in 30g (0.13mol) benzoin methylether, add 5g (0.16mol) Paraformaldehyde 96, under the condition of logical nitrogen, reacted 3 hours down at 40 ℃.With the reactor product cool to room temperature,, add the 120mL saturated brine then then with the dilute hydrochloric acid neutralization.With this solution of ethyl acetate extraction, extraction liquid is washed 3 times with saturated brine.Product drying after will washing with anhydrous magnesium sulfate and concentrating, with diethyl ether with its recrystallize.Obtain alpha-hydroxymethyl benzoin methylether (MBME) in this way.

In the presence of the dibutyl tin laurate of catalytic amount, under 60 ℃, make the tolylene diisocyanate reaction 1 hour of the MBME that obtains and equimolar amount, add vinylformic acid 2-hydroxyl ethyl ester then with the MBME equimolar amount, reacted 1 hour down at 60 ℃ again, thus the benzoin ether compd A shown in below obtaining.

(embodiment 4)

(synthetic benzoin ether compd B)

Obtain α-2-propyloic-benzoin methylether (BAE-CO with the method identical with production benzoin ether compd A ₂H), just replace Paraformaldehyde 96 with vinylformic acid.The BAE-CO that is obtaining ₂Add the glycidyl methacrylate of equimolar amount and the Trimethylamine 99 of catalytic amount among the H, reacted 4 hours down at 80 ℃, thus the benzoin ether compd B shown in below obtaining.

(embodiment 5)

(EB 3700 to stir bisphenol-a epoxy acrylate as 30 weight parts of resin with planetary whipping appts, Daicel UCB Co.Ltd. production), bisphenol A type epoxy resin (EPICRONE 850 CRP of 50 weight parts, Dainippon Ink and Chemicals, Inc. produces) and as the benzoin ether compd A of 2 weight parts of polymerization starter.Disperse the spherical silicon dioxide (SO-Cl, Admafine Co.Ltd. produces) of 15 weight parts and the 2-phenyl-4 of 3 weight parts with three rollers then, 5-hydroxymethyl-imidazole (Shikoku Corp. production) obtains sealing agent.

Make liquid crystal display with mode similarly to Example 1 with the sealing agent that obtains.

(embodiment 6)

Obtain sealing agent with similarly to Example 5 method, just replace the benzoin ether compd A of 2 weight parts as the benzoin ether compd B of polymerization starter, with sealing agent manufacturing liquid crystal display as polymerization starter with 2 weight parts.

(comparative example 7-9)

Obtain sealing agent and liquid crystal display with similarly to Example 5 method, just in comparative example 7, be used as oligomeric [2-hydroxy-2-methyl-1-[4-(1-methyl ethylene) phenyl] acetone of high molecular initiator] (KIP-150, Lamberti Co. produces), in comparative example 8, use benzoin iso-propylether (Solvaslon BIPE, Kurogane Kasei Co.Ltd produces), 2-hydroxy-2-methyl-1-phenyl third-1-the ketone (IR-1173, CibaSpecialty Chemicals Co.Ltd produces) that is used as the initiator of hydroxyl in comparative example 9 replaces the benzoin ether compd A as polymerization starter.

(comparative example 10)

Obtain sealing agent and liquid crystal display with similarly to Example 6 method, 2-hydroxy-2-methyl-1-phenyl third-1-the ketone (IR-1173, Ciba SpecialtyChemicals Co.Ltd produces) that just is used as the initiator of hydroxyl replaces the benzoin ether compd B as polymerization starter.

As for embodiment 5 and 6 and comparative example 7-10 in the display panels made, with following method voltage retention and the wash-out in liquid crystal are estimated.

(voltage retention to display panels is estimated)

After making back and reliability test (60 ℃/95%RH/1000 hour), the VHR-1A that produces with ToyoCorporation measures the voltage retention of each display panels of manufacturing immediately respectively.

(wash-out in liquid crystal is estimated)

Each display panels of making is taken apart, lcd segment is analyzed, be designated as zero in the situation of except that the peak that belongs to liquid crystal components, not observing other peak with GC-MS, the situation of observing the peak that belongs to polymerization starter is designated as *.

Table 2

(embodiment 7)

The composition thorough mixing that will contain following component with three rollers: the conduct of 40 weight parts is used for the part propylene acidifying Resins, epoxy of sealing agent, and (UVAC 1561, Daicel UCB Co.Ltd produces), the bisphenol f type epoxy resin of 17 weight parts (EPICRONE 830S, Dainippon Ink andChemicals, Inc. produce), the spherical silicon dioxide (SO-Cl as filler of 15 weight parts, Admafine Co.Ltd. produces), the Fujicure FXR-1030 as the epoxy thermosetting agent of 15 weight parts (Fuji Kasei Kogyo Co.Ltd production), the IM-1000 as the imidazoles silane compound (Japan Energy Co.Ltd. production) of Irgacure 907 as the optical free radical initiator of 3 weight parts (Ciba Specialty Chemicals Corp. production) and 5 weight parts, obtain uniform liquid, thereby obtain sealing agent.

Make liquid crystal display with mode similarly to Example 1 with the sealing agent that obtains.

(embodiment 8)

(1) synthetic imidazoles silane compound

Obtain following imidazoles silane compound with following method: 2 phenyl 4 methyl 5 hydroxy methylimidazole is dissolved in the dehydration trihydroxy-furans (THF) of its amount for 3 times of imidazoles amounts, in 1 hour, in the solution that obtains, dropwise drip the γ-isocyanato-propyl trimethoxy silicane of equimolar amount, in argon gas atmosphere, be heated to the dibutyl tin laurate that in the solution that obtains, adds catalytic amount under 60 ℃ and the reflux conditions again, and then under 60 ℃ with mixture heating up with refluxed 1 hour, by evaporation THF is removed from the solution that obtains then.

(2) produce sealing agent and liquid crystal cells

Obtain sealing agent and liquid crystal display with similarly to Example 7 method, just add the imidazoles silane compound that obtains and replace IM-1000.

(embodiment 9)

Obtain using the filler of imidazoles silane compound processing with following method: with the spherical silane (SO-Cl of 100 weight parts as filler, Admafine Co.Ltd. production), the imidazoles silane compound (IS-1000 of 0.2 weight part, Japan Energy Co.Ltd produces) and the ethanol mixing of 100 weight parts, under 60 ℃, mixture was stirred 1 hour, remove volatile constituent, again under negative pressure under 100 ℃ with dry 1 hour of mixture.

Obtain sealing agent and liquid crystal display with similarly to Example 7 method, just add the filler that obtains and replace spherical silicon dioxide (SO-Cl) with the processing of imidazoles silane compound.

(comparative example 11)

Obtain sealing agent and liquid crystal display with similarly to Example 7 method, just add γ-Huan Yangbingyangbingjisanjiayangjiguiwan, in order to replace IM-1000.

(comparative example 12)

Obtain sealing agent and liquid crystal display with similarly to Example 7 method, just add the gamma-amino propyl trimethoxy silicane, in order to replace IM-1000.

(comparative example 13)

Obtain sealing agent and liquid crystal display with similarly to Example 7 method, just do not add imidazolium compounds (IM-1000).

As for the sealing agent of producing among embodiment 7-9 and the comparative example 9-11, with the stability in storage before the aforesaid method evaluate cure with compare resistance value.Estimate adhesion property with following method again.In addition, with aforesaid method the color ununiformity of the liquid crystal display of manufacturing is estimated.

The results are shown in table 3.

(evaluation adhesion property)

Is polymeric beads body (the Micropearl SP of 5 μ m with planetary whipping appts with the median size of 3 weight parts, Sekisui Chemical Co.Ltd. produces) be dispersed in the sealing agent that each is 100 weight parts, thereby obtain a kind of uniform liquid, the sealing agent of the denier that obtains is placed on the slide glass center, another slide glass of stack on it, sealing agent is launched, and is 50mW/cm with intensity ²UV radiation exposure 60 seconds.Heated 1 hour down at 120 ℃ then, obtain the adherence test sample.Adhesion strength with tonometer determination test sample.

Table 3

	Embodiment 7	Embodiment 8	Embodiment 9	The comparative example 11	The comparative example 12	The comparative example 13
							The color ununiformity	◎	◎	◎	××	○	◎
Cohesive force	1.5	1.7	22	1.5	1.6	0.7
							Stability in storage	1.2	1.2	1.2	1.4	2.5	1.1
Ratio resistance value before solidifying	1.3×10 9	1.7×10 9	2.2×10 9	1.2×10 9	9.8×10 9	2.9×10 9

(embodiment 10)

With 25 weight parts (UVAC 1561 as the part propylene acidifying Resins, epoxy of the resin that is used for sealing agent, Daicel UCB Co.Ltd production), the amino silane compounds of the Resins, epoxy of the part propylene acidifying of the urethane modification of conduct (C) production of 40 weight parts and 1 weight part (KBM603, Shin-Etsu Chemical Co.Ltd produces) mixes and stirs.The resin combination that obtains is heated under 40 ℃ and stirred 1 hour, under 60 ℃, heat again and stirred 1 hour, obtain a kind of sealing agent.

The spherical silane (SO-Cl that adds 17 weight parts then as filler, Admafine Co.Ltd. production), the benzoin ether compd A as production among the embodiment 3 of optical free radical initiator of the Fujicure FXR-1030 as the epoxy thermosetting agent (Fuji Kasei KogyoCo.Ltd production) of 14 weight parts and 3 weight parts, with three roller thorough mixing, obtain a kind of uniform liquid.

Carry out viscosity measurement to having carried out heat treated sealing agent immediately after the heating, then sealing agent is stored under-10 ℃, 1 day and 1 week back measurement viscosity, the results are shown in table 4 respectively.

Carry out with the sealing agent that obtains ¹H-NMR measures, and uses NH ₂The integrated value at peak (1.25ppm) is calculated reaction back NH ₂The residual rate of group finds that this value is less than 1%.In liquid crystal (5004 LA, ChissoCorporation produce) under 120 ℃ with sealing agent heating 1 hour, measure the voltage retention (under 60Hz) of liquid crystal then, find it up to 90%, thereby found that the sealing agent seldom pollutes liquid crystal.

(comparative example 14)

Obtain sealing agent with similarly to Example 10 mode, just do not heat-treat.

After the mixing sealing agent that obtains is stored immediately 1 day and 1 all backs mensuration viscosity down at-10 ℃.

The results are shown in table 4.

Carry out with the sealing agent that obtains ¹H-NMR measures, and uses NH ₂The integrated value at peak (1.25ppm) is calculated reaction back NH ₂The residual rate of group finds that this value is 25%.In liquid crystal (5004 LA, ChissoCorporation produces), under 120 ℃, sealing agent was heated 1 hour, measure the voltage retention (under 60Hz) of liquid crystal then, find that it is low to moderate 66%, thereby the explanation liquid crystal has been subjected to remaining NH ₂The pollution of group.

Table 4

	Embodiment 10	The comparative example 14
			After the thermal treatment	315Pa.s	-
After just having mixed	-	265Pa.s
			After 1 day	315Pa.s	275Pa.s
After 1 week	315Pa.s	285Pa.s

(embodiment 11)

(1) surface treatment of solidifying agent

2-undecyl imidazole (the C that the Aerosil#200 (median size is 0.03 μ m, and Nippon AerosilCo.Ltd produces) of 10 weight parts is added 100 weight parts ₁₁Z: median size is 5 μ m, and Shikoku Chemicals Corp. produces), stirred 3 minutes with small-sized mixing machine, obtain white powder (coated solidifying agent 1).

Change the consumption of the Aerosil#200 of coated solidifying agent 1 into 50 weight parts, obtain coated solidifying agent 2.

Change the consumption of the Aerosil#200 of coated solidifying agent 1 into 1 weight part, obtain coated solidifying agent 3.

Change the coating particles of coated solidifying agent 1 SE5050 (median size is 0.03 μ m, Admafine Co.Ltd. produce) of 20 weight parts into, obtain coated solidifying agent 4.

(2) produce curable resin composition

The composition thorough mixing that will contain following component with three rollers: 70 weight parts (UVAC 1561 as the part propylene acidifying Resins, epoxy of cured resin, Daicel UCB Co.Ltd produces), the part propylene acidifying compound of the urethane modification that the conduct of 30 weight parts (C) is produced, the spherical silicon dioxide (SO-Cl as filler of 20 weight parts, Admafine Co.Ltd. produces), 6.6 weight part as the coated solidifying agent 1 of solidifying agent and the Irgacure907 as the optical free radical initiator of 3 weight parts (Ciba-Specialty Chemicals Co.Ltd production), obtain a kind of uniform liquid, thereby obtain curable resin composition 1.

(embodiment 12)

Obtain curable resin composition 2 with the mode identical, just with the coated solidifying agent 1 of coated solidifying agent 2 replacements 6.6 weight parts of 9 weight parts with embodiment 11.

(embodiment 13)

Obtain curable resin composition 3 with the mode identical, just with the coated solidifying agent 1 of coated solidifying agent 3 replacements 6.6 weight parts of 6.06 weight parts with embodiment 11.

(embodiment 14)

Obtain curable resin composition 4 with the mode identical, just with the coated solidifying agent 1 of coated solidifying agent 4 replacements 6.6 weight parts of 6.6 weight parts with embodiment 11.

(comparative example 15)

Obtain curable resin composition 5 with the mode identical, just replace the coated solidifying agent 1 of 6.6 weight parts with the 2-undecyl imidazole without the coating processing of 6 weight parts with embodiment 11.

Estimate the stability in storage and the curing performance of each curable resin composition of producing among embodiment 11-14 and the comparative example 15 with following method.The results are shown in table 5.

(stability in storage evaluation)

Under 23 ℃, the condition of storage of 50%RH, the fate the when viscosity that writes down each curable resin composition reaches firm twice of mixing back viscosity.

(curing performance evaluation)

Estimate with following method: will be immersed among excessive a lot of THF by solidifying the solidifying product that obtained in 1 hour down at 120 ℃, under 23 ℃, product was shaken 24 hours, drying is 3 hours under 80 ℃, and the gravimetric value (g) of using drying products is divided by the gravimetric value (g) before soaking.With transmission electron microscope the observation that the solidifying product that obtains carries out is shown: the reagent that applies the solidifying agent surface exists to draw round state in solidifying product.

Table 5

	Embodiment 11	Embodiment 12	Embodiment 13	Embodiment 14	The comparative example 15
						Initial viscosity (mPa.s)	350000	600000	300000	345000	32000
Fate when viscosity reaches the initial viscosity twice	8 days	8 days	6 days	6 days	3 days
						Curing performance	99％	98％	99％	98％	98％

(embodiment 15)

(1) preparation end-blocking material

Bisphenol-a epoxy acrylate (EB3700 with 50 weight parts as acrylic resin, Daicel UCB Co.Ltd. production), (EB 8402 for the urethane acrylate of 38 weight parts, DaicelUCB Co.Ltd. production), the light trigger (IR-651 of 10 parts by weight of acrylic hydroxyl ethyl esters and 2 weight parts, Ciba Specialty Chemicals Co.Ltd produces) be heated to 70 ℃, light trigger is dissolved, stir with planetary whipping appts then, thereby make the end-blocking material that is used for liquid crystal panel.

(2) purification end-blocking material

(Kyowaad 1000 for the hydrotalcite compounds of group of adding 12.5 weight parts in the end-blocking material that 100 weight parts obtain, Kyowa Chemical Industry Co.Ltd produces), stirred 30 minutes down at 60 ℃, use the screen plate made by polytetrafluoroethylene (PTFE) to filter the mixture that obtains then, with its purification.

(3) make liquid crystal panel

Keep at liquid crystal injecting port under the situation of its original state, on two of ITO thin layer etc. support one hermetic unit in the substrate of glass of transparency electrodes, carry out silk screen printing with thermosetting epoxy resin (sealing agent).Heated 3 minutes down at 80 ℃ then, sealing agent is predrying, it is bonded in the substrate, at room temperature substrate is overturn then.Then that another substrate of glass and previous substrate of glass is staggered relatively, 130 ℃ of following hot pressing heating, pressed sticking 10 minutes, sealant cures.

After will vacuumizing with the blank panel that this method obtains, inject liquid crystal (ZL11636, Merck ﹠amp; Co.Inc produces), in order to the end-blocking material of aforesaid method production inlet is sealed, with intensity 50mW/cm with high voltage mercury lamp ²UV radiation exposure 60 seconds.At last, under 120 ℃, make liquid crystal annealing 1 hour, thereby make liquid crystal display.

(embodiment 16)

Make liquid crystal panel with method similarly to Example 15, just replace hydrotalcite compounds of group purification end-blocking material with kaolinite compounds of group (ASP-400P, ENGELHARD Co. produces).

(embodiment 17)

Make liquid crystal panel with method similarly to Example 15, just replace hydrotalcite compounds of group purification end-blocking material with diatomite (Radiolite#200).

(comparative example 16)

Make liquid crystal panel with method similarly to Example 15, just replace hydrotalcite compounds of group purification end-blocking material with silicon-dioxide (SO-C5, Admafine Co.Ltd. produces).

(comparative example 17)

Make liquid crystal panel with method similarly to Example 15, just without the hydrotalcite compounds of group, the end-blocking material of also not purifying.

(comparative example 18)

End-blocking material before purifying among the embodiment 15 is purified without the hydrotalcite compounds of group, but purifies with following method:

The above-mentioned end-blocking material dissolves of 12.5g in 12.5g toluene, is obtained toluene solution, in this solution, add the 50g pure water, stirred 30 minutes.Make the mixture separation that obtains become toluene solution part and water layer part by centrifugation, only water layer is partly taken out.Toluene solution is heated to 80 ℃ then, under 133.3Pa, stirred 30 minutes, except that these steps, make liquid crystal panel with method similarly to Example 15.

(embodiment 18)

The propylene oxide part propylene acidifying product stirring of the conduct (B) of bisphenol-a epoxy acrylate as acrylic resin of 50 weight parts (EB 3700, Daicel UCB Co.Ltd. produces) and 30 weight parts being produced with planetary whipping appts.

(Kyowaad 1000 for the hydrotalcite compounds of group of adding 10 weight parts in the composition that 80 weight parts obtain, Kyowa Chemical Industry Co.Ltd produces), stirred 30 minutes down at 60 ℃, use the screen plate of making by PTFE to filter the mixture that obtains then.

Then with the spherical silicon dioxide (SO-Cl of 15 weight parts, Admafine Co.Ltd. production), the 2-phenyl-4 of 3 weight parts, light trigger (the IR-651 of 5-hydroxymethyl-imidazole (Shikoku Chemicals Corp. production) and 2 weight parts, Ciba Specialty Chemicals Co.Ltd produces) be heated to 70 ℃, light trigger is dissolved, stir with three rollers then, make the end-blocking material.

Make display panels with the end-blocking material that obtains with the method identical with embodiment 1.

(comparative example 19)

Make liquid crystal panel with method similarly to Example 18, just the method according to comparative example 16 washes with water, with the end-blocking material before purifying among this embodiment 18 that purifies.

As for each close agent or end-blocking material of sealing of producing among embodiment 15-18 and the comparative example 16-19, measure water outlet ionic conductivity before solidifying with following method, and the voltage retention and the color ununiformity of each liquid crystal panel of obtaining are estimated.It the results are shown in table 6.

(measurement of water outlet ionic conductivity)

Each end-blocking material dissolves that 12.5g before solidifying is obtained adds the 50g pure water in solution in 12.5g toluene, stirred 30 minutes, with centrifugal separation water layer is partly taken out, measure ionic conductivity with ionic conductivity meter (Ltd produces for ES-12, Horiba).

(mensuration of voltage retention)

By respectively make back and reliability test (under 60 ℃, 95%RH 1000 hours) after, the voltage retention of each liquid crystal panel of obtaining of mensuration is carried out service test immediately.

After reliability test,, the color ununiformity in the liquid crystal injecting port peripheral part of each liquid crystal panel is estimated by visual inspection

Industrial applicability

The invention provides a kind of curable resin composition, said composition is suitable for making demonstration equipment, be particularly suitable for filling legal system with a step drippage and make demonstration equipment, because when making liquid crystal display cells in the situation with the end-blocking material of the sealing agent that is used for liquid crystal display cells or used for liquid crystal display element, the component of said composition can prevent that its component is eluted in the liquid crystal material, can not pollute liquid crystal, its component also seldom causes the inhomogeneities of color in liquid crystal display, therefore, said composition has excellent storage stability, and the present invention also provides the sealing agent that is used for the demonstration element of using said composition and the such end-blocking material that is used for showing element.

Claims (3)

1. the production method of a curable resin composition, it comprises at least:

Make step 1 that the ionic adsorption solid contacts with curable resin composition and

Make ionic adsorption solid and curable resin composition separation steps 2, wherein, the ionic adsorption solid contains aluminium.

2. the production method of a curable resin composition, it comprises at least:

Make step 1 that the ionic adsorption solid contacts with curable resin composition and

Make ionic adsorption solid and curable resin composition separation steps 2, wherein, the ionic adsorption solid is a kind of layered inorganic compound.

3. according to the production method of the curable resin composition of claim 2, wherein, layered inorganic compound is the hydrotalcite compounds of group.

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