Classifications

• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D207/00—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
  • C07D207/02—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
  • C07D207/30—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members
  • C07D207/34—Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having two double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
  • C07D207/36—Oxygen or sulfur atoms
  • C07D207/40—2,5-Pyrrolidine-diones
  • C07D207/404—2,5-Pyrrolidine-diones with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms, e.g. succinimide
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D209/00—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom
  • C07D209/02—Heterocyclic compounds containing five-membered rings, condensed with other rings, with one nitrogen atom as the only ring hetero atom condensed with one carbocyclic ring
  • C07D209/44—Iso-indoles; Hydrogenated iso-indoles
  • C07D209/48—Iso-indoles; Hydrogenated iso-indoles with oxygen atoms in positions 1 and 3, e.g. phthalimide
• • C—CHEMISTRY; METALLURGY
  • C07—ORGANIC CHEMISTRY
  • C07D—HETEROCYCLIC COMPOUNDS
  • C07D403/00—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00
  • C07D403/14—Heterocyclic compounds containing two or more hetero rings, having nitrogen atoms as the only ring hetero atoms, not provided for by group C07D401/00 containing three or more hetero rings
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
  • C08G65/34—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives
  • C08G65/38—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives derived from phenols
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
  • C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
  • C08G73/10—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
  • C08G73/12—Unsaturated polyimide precursors
  • C08G73/124—Unsaturated polyimide precursors the unsaturated precursors containing oxygen in the form of ether bonds in the main chain
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J171/00—Adhesives based on polyethers obtained by reactions forming an ether link in the main chain; Adhesives based on derivatives of such polymers
  • C09J171/08—Polyethers derived from hydroxy compounds or from their metallic derivatives
  • C09J171/10—Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
  • C09J171/12—Polyphenylene oxides
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
  • C09J179/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen, with or without oxygen, or carbon only, not provided for in groups C09J161/00 - C09J177/00
  • C09J179/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
• • G—PHYSICS
  • G02—OPTICS
  • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
  • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
  • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
  • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
  • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
  • G02F1/1333—Constructional arrangements; Manufacturing methods
  • G02F1/1339—Gaskets; Spacers; Sealing of cells
• • G—PHYSICS
  • G02—OPTICS
  • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
  • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
  • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
  • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
  • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
  • G02F1/1333—Constructional arrangements; Manufacturing methods
  • G02F1/1341—Filling or closing of cells
  • G02F1/13415—Drop filling process

Definitions

• the present invention relates to monomers and oligomers useful as sealants and particularly as one drop fill sealants for liquid crystal applications.
• the present invention permits assembly of LCD panels without migration of the sealant resin into the liquid crystal or vice versa during LCD assembly and/or curing of the resin.
• ODF one drop fill
• a sealant is dispensed on an electrode-equipped substrate to form a frame of a display element, and liquid crystals are dropped inside the depicted frame.
• another electrode equipped substrate is joined thereto under vacuum.
• the sealant undergoes a curing process, either by a combination of UV and thermal or by thermal only process.
• the ODF method has a few problems in that the sealant material in the uncured state comes into contact with the liquid crystal during the assembly process. This could cause reduction in electro-optical properties of the liquid crystal by resin migration into the liquid crystal or vice versa, or because of ionic impurities that may be present. Hence, design of resin systems for sealant material that show good liquid crystal resistance (less contamination) along with good adhesion and moisture barrier properties has remained a challenge.
• the present invention relates to unique resins and ODF compositions made therefrom.
• R is a multivalent hydrocarbyl linker selected from linear or branched alkyls, linear or branched cycloalkyls, alkylenes, cycloalkylenes, bicyclo alkylenes, tricycloalkylenes, linear or branched alkylenes, linear or branched cycloalkylenes, linear or branched alkenylenes, arylenes, aralkylenes, arylbicycloalkylenes, aryltricycloalkylenes, bicycloalkylarylenes,
• heterocycloarylenes the alkyls, cycloalkyls, alkylenes, cycloalkylenes, alkenylenes, arylenes, aralkylenes, arylbicycloalkylenes, aryltricycloalkylenes, bicycloalkylarylenes,
• heterocycloarylenes can optionally contain O or S or hydroxyl group
• n and m are each independently 1-10.
• R is a multivalent hydrocarbyl linker selected from linear or branched alkyls, linear or branched cycloalkyls, alkylenes, cycloalkylenes, bicycloalkylenes, tricycloalkylenes, linear or branched alkylenes, linear or branched cycloalkylenes, linear or branched alkenylenes, arylenes, aralkylenes, arylbicycloalkylenes, aryltricycloalkylenes, bicycloalkylarylenes,
• heterocycloarylenes the alkyls, cycloalkyls, alkylenes, cycloalkylenes, alkenylenes, arylenes, aralkylenes, arylbicycloalkylenes, aryltricycloalkylenes, bicycloalkylarylenes,
• heterocycloarylenes can optionally contain 0 or S or hydroxyl group; and m, n 2 , n 3 , and n 4 are each independently 1-10.
• Xi and X 2 are each 3-10 membered rings independently selected from functionalized or unfunctionalized alicycyclic groups optionally having one or more heteroatoms; m and n 2 are each independently 1-10;
• R is a multivalent hydrocarbyl linker selected from linear or branched alkyls, linear or branched cycloalkyls, alkylenes, cycloalkylenes, bicycloalkylenes, tricycloalkylenes, linear or branched alkylenes, linear or branched cycloalkylenes, linear or branched alkenylenes, arylenes, aralkylenes, arylbicycloalkylenes, aryltricycloalkylenes, bicycloalkylarylenes,
• heterocycloarylenes the alkyls, cycloalkyls, alkylenes, cycloalkylenes, alkenylenes, arylenes, aralkylenes, arylbicycloalkylenes, aryltricycloalkylenes, bicycloalkylarylenes, tricycloalkylarylenes, bisphenylenes, cycloalkylarylenes, heterocycloalkylene and heterocycloarylenes can optionally contain O or S or hydroxyl group; and
• R is linked to the ring structures Xi and X 2 at any position with a proviso that the hydroxyl groups on Xi and X 2 rings are adjacent to the maleimidoalkanoyl groups.
• R is a multivalent hydrocarbyl linker selected from linear or branched alkyls, linear or branched cycloalkyls, alkylenes, cycloalkylenes, bicycloalkylenes, tricycloalkylenes, linear or branched alkylenes, linear or branched cycloalkylenes, linear or branched alkenylenes, arylenes, aralkylenes, arylbicycloalkylenes, aryltricycloalkylenes, bicycloalkylarylenes,
• heterocycloarylenes the alkyls, cycloalkyls, alkylenes, cycloalkylenes, alkenylenes, arylenes, aralkylenes, arylbicycloalkylenes, aryltricycloalkylenes, bicycloalkylarylenes,
• heterocycloarylenes can optionally contain O or S or hydroxyl group
• Ri can be a carbonyl; an aliphatic or aromatic linker and may contain one or more of ester, ether, hydroxyl or thioether groups;
• R 2 is a substituent on the aromatic ring, which can be H, halogen, alkyl, alkyl ether, thioether group;
• Xi is selected from maleimidoalkanoyl or maleimidoaroyl group.
• Ri can be just a bond linking the two aromatic groups; O; carbonyl; or a multivalent hydrocarbyl linker selected from linear or branched alkyls, linear or branched cycloalkyls, alkylenes, cycloalkylenes, bicycloalkylenes, tricycloalkylenes, linear or branched alkylenes, linear or branched cycloalkylenes, linear or branched alkenylenes, arylenes, aralkylenes,
• arylbicycloalkylenes aryltricycloalkylenes, bicycloalkylarylenes, tricycloalkylarylenes, bisphenylenes, cycloalkylarylenes, heterocycloalkylene or heterocycloarylenes; the alkyls, cycloalkyls, alkylenes, cycloalkylenes, alkenylenes, arylenes, aralkylenes, arylbicycloalkylenes, aryltricycloalkylenes, bicycloalkylarylenes, tricycloalkylarylenes, bisphenylenes,
• cycloalkylarylenes, heterocycloalkylene and heterocycloarylenes can optionally contain O or S or hydroxyl group;
• R 2 is an aliphatic or aromatic linker group which may contain one or more of ester, ether, hydroxyl, thioether or carbonate groups;
• R 3 is a substituent on the aryl group, which may be H, halogen, alkyl, alkyl ether, or thio ether group;
• X is a polymerizable functionality selected from maleimidoalkanoyl and maleimidoaroyl groups.
• R is a divalent hydrocarbyl linker selected from linear or branched alkyls, linear or branched cycloalkyls, alkylenes, cycloalkylenes, bicycloalkylenes, tricycloalkylenes, linear or branched alkylenes, linear or branched cycloalkylenes, linear or branched alkenylenes, arylenes, aralkylenes, arylbicycloalkylenes, aryltricycloalkylenes, bicycloalkylarylenes,
• heterocycloarylenes the alkyls, cycloalkyls, alkylenes, cycloalkylenes, alkenylenes, arylenes, aralkylenes, arylbicycloalkylenes, aryltricycloalkylenes, bicycloalkylarylenes,
• heterocycloarylenes can optionally contain O or S or hydroxyl group
• Ri and R 2 are each linear or branched aliphatic groups optionally containing heteroatoms; n is 1-10; and m and n 2 are 1-100.
• the polymers of the present invention are useful in a wide variety of applications including sealing, adhesion and coating.
• One particularly desirable use is as an ODF sealant for assembling LCD panels.
• the present invention includes a number of novel materials including resins, oligomers and polymers useful for preparing curable compositions which may be used for ODF sealants.
• the present invention also includes novel compositions made from the disclosed resins.
• the term "resins” will include the aforementioned the novel materials, i.e. resins, oligomers and polymers.
• One aspect of the invention includes a curing resin composition for use as an ODF sealant, which includes resins represented by the general structural formulae shown above.
• the glycidyl ether/ester compounds useful in synthesizing some of the inventive resins described herein is not particularly limited, and examples of the compounds available in the market include: bisphenol A type epoxy resins such as Epikote 828EL and Epikote 1004 (all manufactured by Japan Epoxy Resin Co., Ltd.); bisphenol F type epoxy resins such as Epikote 806 and Epikote 4004 (all manufactured by Japan Epoxy Resin Co., Ltd.); bisphenol S type epoxy resins such as Epiclon EXA1514 (manufactured by Dainippon Ink and Chemicals Inc.) and SE 650 manufactured by Shin A T&C; 2,2'-diallyl bisphenol A type epoxy resins such as RE-81 ONM (manufactured by Nippon Kayaku Co., Ltd.); hydrogenated bisphenol type epoxy resins such as Epiclon EXA7015 (manufactured by Dainippon Ink and Chemicals Inc.);
• propyleneoxide-added bisphenol A type epoxy resins such as EP-4000S (manufactured by ADEKA Corporation); resorcinol type epoxy resins such as EX-201 (manufactured by Nagase ChemteX Corporation); biphenyl type epoxy resins such as Epikote YX-4000H (manufactured by Japan Epoxy Resin Co., Ltd.); sulfide type epoxy resins such as YSLV 50TE (manufactured by Tohto Kasei Co., Ltd.); ether type epoxy resins such as YSLV 80DE (manufactured by Tohto Kasei Co., Ltd.); dicyclopentadiene type epoxy resins such as EP-4088S and EP4088L
• naphthalene type epoxy resins such as SE-80, SE-90, manufactured by Shin A T&C
• glycidyl amine type epoxy resins such as Epikote 630
• Examples of the commercially available phenol novolak type epoxy compound include Epiclon N-740, N-770, N-775 (all manufactured by Dainippon Ink and Chemicals Inc.), Epikote 152, Epikote 154 (all manufactured by Japan Epoxy Resin Co., Ltd.), and the like.
• cresol novolak type epoxy compound examples include Epiclon N-660, N-665, N-670, N-673, N-680, N-695, N-665-EXP and N-672-EXP (all manufactured by Dainippon Ink and Chemicals Inc.); an example of the commercially available biphenyl novolak type epoxy compound is NC-3000P (manufactured by Nippon Kayaku Co., Ltd.); examples of the commercially available trisphenol novolak type epoxy compound include EP1032S50 and EP1032H60 (all manufactured by Japan Epoxy Resin Co., Ltd.); examples of the commercially available dicyclopentadiene novolak type epoxy compound include XD-1000- L (manufactured by Nippon Kayaku Co., Ltd.) and HP-7200 (manufactured by Dainippon Ink and Chemicals Inc.); examples of the commercially available bisphenol A type epoxy compound include Epikote 828, Epikote 834, Epikote 1001, Epikot
• Examples of the alicyclic epoxy compounds useful in synthesizing some of the inventive resins include, without limitation, polyglycidyl ethers of polyhydric alcohols having at least one alicyclic ring and cyclohexene oxide- or cyclopentene oxide containing compounds obtained by epoxidizing cyclohexene ring or cyclopentene ring-containing compounds.
• Specific examples include hydrogenated bisphenol A diglycidyl ether, 3,4-epoxycyclohexylmethyl 3,4- epoxycyclohexanecarboxylate, 3,4-epoxy-l-methyl cyclohexyl-3,4-epoxy-l- methylcyclohexanecarboxylate, 6-methyl-3 ,4-epoxycyclohexylmethyl-6-methyl-3 ,4-epoxy- cyclohexanecarboxylate, 3,4-epoxy-3-methylcyclohexylmethyl 3,4-epoxy-3- methylcyclohexanecarboxylate, 3,4-epoxy-5-methylcylcohexylmethyl-3,4-epoxy-5- methylcyclohexanecarboxylate, 2-(3,4-epoxycyclohexyl-5,5-spiro-3,4-epoxy)cyclohexane- metadioxane, bis(3,4-epoxy
• UVR-6100 Some of these alicyclic epoxy resins are commercially available as: UVR-6100,
• UVR-6105, UVR-61 10, UVR-6128, and UVR-6200 products of Dow Corporation
• EPOLEAD 403, ETHB, and EPOLEADHD 300 products of Daicel Chemical Industries, Ltd.
• KRM-2110, and KRM-2199 products of ADEKA Corporation.
• ODF sealant compositions may also include a free radical initiator (thermal or UV generated) and a curing agent. Curing of the ODF compositions may be by thermal or UV mechanisms or both. In embodiments where an epoxide ring is present, a latent epoxy curing agent may also be employed.
• a free radical initiator thermal or UV generated
• a curing agent may also be employed.
• Useful thermal free radical initiators include, for example, organic peroxides and azo compounds that are known in the art. Examples include: azo free radical initiators such as AIBN (azodiisobutyronitrile), 2,2'-azobis(4-methoxy-2,4-dimethyl valeronitrile), 2,2'-azobis(2,4- dimethyl valeronitrile), dimethyl 2,2'-azobis(2-ethylpropionate), 2,2'-azobis(2- methylbutyronitrile), 1,1 l-azobis(cyclohexane-l-carbonitrile), 2,2'-azobis[N-(2-propenyl)-2- methylpropionamide]; dialkyl peroxide free radical initiators such as l,l-di-(butylperoxy-3,3,5- trimethyl cyclohexane); alkyl perester free radical initiators such as TBPEH (t-butyl per-2- ethylhexano
• organic peroxide free radical initiators include: dilauroyl peroxide, 2,2-di(4,4-di(tert-butylperoxy)cyclohexyl)propane, di(tert-butylperoxyisopropyl) benzene, di(4-tert-butylcyclohexyl) peroxydicarbonate, dicetyl peroxydicarbonate, dimyristyl peroxydicarbonate, 2,3-dimethyl-2,3-diphenylbutane, dicumyl peroxide, dibenzoyl peroxide, diisopropyl peroxydicarbonate, tert-butyl monoperoxymaleate, 2,5-dimethyl-2,5-di(tert- butylperoxy)hexane, tert-butylperoxy 2-ethylhexyl carbonate, tert-amyl peroxy-2- ethylhexan
• the thermal free radical initiator with higher decomposition rate is preferred, as this can generate free radicals more easily at common cure temperature (80-130°C) and give faster cure speed, which can reduce the contact time between liquid resin and liquid crystal, and reduce the liquid crystal contamination.
• the decomposition rate of initiator is too high, the viscosity stability at room temperature will be influenced and thereby reducing the work life of the sealant.
• a convenient way of expressing the decomposition rate of an initiator at a specified temperature is in terms of its half-life i.e., the time required to decompose one-half of the peroxide originally present.
• Tl 2 the temperature at which each initiator has a half-life
• thermal free radical initiator with 10 h TV2 temperature of 30-80°C is preferred, and the thermal free radical initiator with 10 h Tl/2 temperature of 40-70°C is more preferred.
• the thermal free radical initiator used in the resin composition is in an amount of usually 0.01 to 3 parts by weight, and preferably 0.5 to 2 parts by weight, based on 100 parts by weight of the inventive resin in the curable composition of the present invention.
• Useful UV free radical initiators include Norrish type I cleavage photoinitiators that are commercially available from CIBA and BASF. These photoinitiators are used in the amount 0.1-5wt%, more preferably in about 0.2 to 3wt% in the formulation.
• Examples of useful epoxy curing agent include but are not limited to the Ajicure series of hardeners available from Ajinomoto Fine-Techno Co., Inc.; the Amicure series of curing agents available from Air products and the JERCURETM products available from
• the curable composition may optionally contain, as desired, a further component capable of a photopolymerization reaction such as a vinyl ether compound.
• the curable composition may further comprise additives, resin components and the like to improve or modify properties such as flowability, dispensing or printing property, storage property, curing property and physical property after curing.
• additives may be contained in the composition as desired, for example, organic or inorganic fillers, thixotropic agents, silane coupling agents, diluents, modifiers, coloring agents such as pigments and dyes, surfactants, preservatives, stabilizers, plasticizers, lubricants, defoamers, leveling agents and the like; however it is not limited to these.
• the composition preferably comprises an additive selected from the group consisting of organic or inorganic filler, a thixotropic agent, and a silane coupling agent.
• These additives may be present in amounts of about 0.1% to about 50% by weight of the total composition, more preferably from about 2% to about 10% by weight of the total composition.
• the filler may include, but is not limited to, inorganic fillers such as silica, diatomaceous earth, alumina, zinc oxide, iron oxide, magnesium oxide, tin oxide, titanium oxide, magnesium hydroxide, aluminium hydroxide, magnesium carbonate, barium sulphate, gypsum, calcium silicate, talc, glass bead, sericite activated white earth, bentonite, aluminum nitride, silicon nitride, and the like; meanwhile, organic fillers such as poly(methyl) methacrylate, poly(ethyl) methacrylate, poly(propyl) methacrylate, poly(butyl) methacrylate, butylacrylate- methacrylic acid-(methyl) methacrylate copolymer, polyacrylonitrile, polystyrene,
• inorganic fillers such as silica, diatomaceous earth, alumina, zinc oxide, iron oxide, magnesium oxide, tin oxide, titanium oxide, magnesium hydroxide
• the thixotropic agent may include, but is not limited to, talc, fume silica, superfine surface-treated calcium carbonate, fine particle alumina, plate-like alumina; layered compounds such as montmorillonite, spicular compounds such as aluminium borate whisker, and the like. Among them, talc, fume silica and fine alumina are particularly desired. These agents may be present in amounts of about 1% to about-50%, more preferably from about 1% to about 30% by weight of the total composition.
• the silane coupling agent may include, but is not limited to, ⁇ - minopropyltriethoxysilane, ⁇ -mercaptopropyltrimethoxysilane, ⁇ - methacryloxypropyltrimethoxysilane, ⁇ -glycidoxypropyltrimethoxylsilane, and the like.
• the curable composition according to the present invention may be obtained by mixing the aforementioned each component by means of, for example, a mixer such as a stirrer having stirring blades and a three roll mill.
• the composition is liquid at ambient with the viscosity of 200-400 Pa.s (at 25°C) at 1.5s- 1 shear rate, which allows for easy dispensing.
• the method comprises the steps of
• the first substrate and the second substrate used in the present invention are usually transparent glass substrates.
• transparent electrodes, active matrix elements (such as TFT), alignment film(s), a color filter and the like are formed on at least one of the opposed faces of the two substrates. These constitutions may be modified according to the type of the LCD.
• the manufacturing method according to the present invention may be thought to be applied for any type of the LCD.
• step (a) the curable composition is applied on the periphery portion of the surface of the first substrate so as to lap around the substrate circumference in a frame shape.
• the portion where the curable composition is applied in a frame shape is referred as a seal region.
• the curable composition can be applied by a known method such as screen printing and dispensing.
• step (b) the liquid crystal is then dropped onto the center region surrounded by the seal region in the frame shape on the surface of the first substrate. This step is preferably conducted under reduced pressure.
• step (c) said second substrate is then placed over said first substrate, and UV- irradiated in the step (d).
• the curable composition cures partially and shows the strength at a level that displacement does not occur by handling, whereby the two substrates are temporally fixed.
• the radiation time is preferably short, for example not longer than 5 minutes, preferably not longer than 3 minutes, more preferably not longer than 1 minute.
• step (e) heating the curable composition allows it to achieve the final curing strength, whereby the two substrates are finally bonded.
• the thermal curing in the step (e) is generally heated at a temperature of 80 to 130°C, and preferably of 100 to 120°C, with the heating time of 30mins to 3 hours, typically 1 hour.
• Methylhydroquinone (1000-3000ppm) and Hycat 2000S epoxy ring opening catalyst (1 wt%) were added and the mixture stirred at 60°C for about 24h. After cooling to room temperature (room temperature), an appropriate amount of ethyl acetate was added and the mixture was washed twice with aqueous NaHC0 3 solution and several times with deionized water. After drying over anhydrous Na 2 S04, the solvent was passed through a silica column. Another 500ppm of methylhydroquinone was added and the solvent evaporated to give give give inventive
• the organic layer was passed through a silica column containing a short plug of sillitin in between the silica layers. Another 500ppm pf 4- methoxyphenol was added and the solvent evaporated on rotovap to give bismaleimide resin 7 as a brown viscous liquid (72g, 87%).
• the organic layer was passed through a silica column containing a short plug of sillitin in between the silica layers. Another 500ppm pf 4-methoxyphenol was added and the solvent evaporated on rotovap to give bismaleimide resin 9 as a brown viscous liquid (89g, 79%), which solidified upon standing at room temperature.

Landscapes

• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Physics & Mathematics (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Nonlinear Science (AREA)
• Health & Medical Sciences (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Crystallography & Structural Chemistry (AREA)
• Mathematical Physics (AREA)
• General Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Epoxy Resins (AREA)
• Sealing Material Composition (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Polyethers (AREA)
• Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Related Child Applications (1)

Publications (1)

Family

ID=57757379

Family Applications (1)

Country Status (7)

Cited By (2)

Families Citing this family (2)

Citations (3)

Family Cites Families (13)

• 2016
  • 2016-07-01 JP JP2018501224A patent/JP2018528282A/ja active Pending
  • 2016-07-01 EP EP16824886.2A patent/EP3322703A4/en not_active Withdrawn
  • 2016-07-01 CN CN201680051597.XA patent/CN108137560B/zh active Active
  • 2016-07-01 KR KR1020187002232A patent/KR101892422B1/ko not_active Expired - Fee Related
  • 2016-07-01 WO PCT/US2016/040611 patent/WO2017011207A1/en not_active Ceased
  • 2016-07-13 TW TW105122109A patent/TW201710319A/zh unknown
• 2018
  • 2018-01-14 US US15/871,009 patent/US20180134657A1/en not_active Abandoned

Patent Citations (3)

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events