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公开(公告)号：JPH0354218A
公开(公告)日：1991-03-08
申请号：JP19192389
申请日：1989-07-24
Applicant: TORAY INDUSTRIES
Inventor： OKA KOICHIRO , OSHIMA KATSUNORI , BABA SETSUO
Abstract: PURPOSE:To prepare a thermoplastic polyurethane resin which hardly whitens during molding, has improved toughness, bending modulus, and transparency, and is useful for a spectacle frame by keeping the difference between the crystallization peak temp. and glass transition temp. and the Shore D hardness each in a specified range. CONSTITUTION:A diisocyanate pref. comprising an arom. diisocyanate (e.g. 4,4'-diphenylmethane (diisocyanate), a short-chain glycol (e.g. 1,4-butanediol), and a long-chain polyol (e.g. polytetramethylene glycol with a mol. wt. of about 2,000) are reacted to produce a thermoplastic polyurethane resin which comprises hard segments formed from the diisocyanate and the short-chain glycol and soft segments formed from the diisocyanate and the long-chain polyol, and has a difference between the crystallization peak temp. (observed by heating 10g of a sample at a rate of temp. rise of 40 deg.C/min to 240 deg.C, keeping it at 240 deg.C for 2min, rapidly cooling it with liq. nitrogen, and then analyzing it with a differential scanning calorimeter from 0 deg.C at a rate of temp. rise of 10 deg.C/min) and a glass transition temp. of 270 deg.C or higher and a Shore hardness (20 deg.C) of 74 or higher.
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公开(公告)号：JPH0347877A
公开(公告)日：1991-02-28
申请号：JP14507190
申请日：1990-05-31
Applicant: TORAY INDUSTRIES
Inventor： OKA KOICHIRO
IPC: G02F1/1339 , C08G59/18 , C08J3/12 , C09D5/03 , C09J163/00
Abstract: PURPOSE:To prepare the subject adhesive existing in the stage B state, thermally curable and suitable for adhering electronic materials such as liquid crystal spacers by suspending an epoxy compound compounded with a latent curable agent in an aqueous liquid and subsequently partially curing the suspended epoxy compound with a water-soluble amine curing agent. CONSTITUTION:An epoxy compound compounded with a latent curing agent (e.g. a phenol novolak) is suspended or emulsified in a liquid solvent consisting mainly of water. The suspended or emulsified epoxy compound is partially cured with a water-soluble amine curing agent (e.g. piperazine or hydrazine) to provide the subject adhesive.
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公开(公告)号：JPH02283731A
公开(公告)日：1990-11-21
申请号：JP10425389
申请日：1989-04-24
Applicant: TORAY INDUSTRIES
Inventor： MORI KAORU , SAKAMOTO SADAYUKI , OKA KOICHIRO
Abstract: PURPOSE:To obtain an optical resin being free from the problem of a pot life and having a high refractive index and sufficient heat resistance by using a polymerizable prepolymer prepared by reacting divinylbenzene or a specified compound with an aliphatic polythiol compound. CONSTITUTION:This optical resin contains a polymeriable component comprising at least a polymerizable prepolymer obtained by the addition reaction of divinylbenzene and/or a compound of formula I (wherein X is H or CH3) with an aliphatic polythiol compound of formula II [wherein (n) is 1-3; and R is a group formed by bonding at least one kind of a residue selected from among residues of formulas III, IV and V with an S residue within the scope in which the number of carbon atoms, alpha, is 3-10, the number of sulfur atoms, beta, is 2-9, and alpha
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公开(公告)号：JPH02274705A
公开(公告)日：1990-11-08
申请号：JP9594089
申请日：1989-04-14
Applicant: TORAY INDUSTRIES
Inventor： OKA KOICHIRO , KIMURA MICHIO , IGUCHI YUICHIRO
Abstract: PURPOSE:To obtain the subject resin excellent in a refractive index, toughness, Abbe's number, hardness and light resistance and desirable for particularly spectacle lenses by polymerizing a specified polymerizable monomer. CONSTITUTION:A high-refractive index resin is produced by using a compound of formula I (wherein R2 is a group of formula II or III; X is H or CH3; and R2 and R3 are each an aliphatic hydrocarbon residue or an aromatic hydrocarbon residue, provided that when they are aliphatic hydrocarbon residues, the sum of the numbers of their carbon atoms is 1 to 6) as a polymerizable monomer. The obtained resin is excellent in a refractive index, Abbe's number, hardness, transparency and light resistance, and is desirable for use in optical lenses, especially spectacle lenses. The polymerizable monomer of formula I can be obtained by thioesterifying the terminals of a dithiol compound of formula IV by reaction with (meth)acrylolyl chloride or by the addition reaction of the terminals of a dithiol compound with a divinylbenzene.
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公开(公告)号：JPH02229808A
公开(公告)日：1990-09-12
申请号：JP938989
申请日：1989-01-17
Applicant: TORAY INDUSTRIES
Inventor： IGUCHI YUICHIRO , SAKAMOTO SADAYUKI , OKA KOICHIRO
IPC: G02B1/04 , C07C321/10 , C07C321/28 , C07C327/10 , C08F20/10 , C08F20/38 , C08F28/00 , C08F28/02
Abstract: PURPOSE:To obtain the subject monomer giving an optical resin useful as optical material having high refractive index and heat resistance by reacting specific compound having benzene ring and SH group and halogenated allyl, etc. CONSTITUTION:A compound expressed by formula I (X is methyl or ethyl, etc.; R3 and R4 are CH2 or CH2S, etc.; n is integer; p and q are 0-2; r is 1-4; with a proviso n+r
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Patent Agency Ranking
公开(公告)号：JPH01297452A
公开(公告)日：1989-11-30
申请号：JP12675688
申请日：1988-05-24
Applicant: TORAY INDUSTRIES
Inventor： HAGIWARA IKUO , OKA KOICHIRO
Abstract: PURPOSE:To obtain the title composition good in handleability and outstanding in bond strength by incorporating an epoxy resin with composite fine granules made up of a flexible polymer and a cured epoxy resin. CONSTITUTION:The objective composition can be obtained by incorporating (A) 100 pts.wt. of an epoxy composition with (B) 3-100 (pref. 5-50) pts.wt. of spherical fine granules =5,000 in number-average molecular weight (e.g., isoprene rubber) or (2) a phase-separated mixture comprising the components B1 and B2 with the latter representing a continuous layer. (The amount of the component B is calculated as the component B2 polymer).
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公开(公告)号：JPH01240582A
公开(公告)日：1989-09-26
申请号：JP6503388
申请日：1988-03-17
Applicant: TORAY INDUSTRIES
Inventor： KURASAKI SHOICHI , TANIGUCHI TAKASHI , OKA KOICHIRO
Abstract: PURPOSE:To obtain the above dispersion comprising fine particles capable of being uniformly dispersed and applied, having stable spacer function, by dispersing fine particle into a mixed solvent of a fluorinated hydrocarbon and an aliphatic hydrocarbon, having a special specific density. CONSTITUTION:First, transparent fine particles of organic polymer base having preferably 0.3-100mum average particle diameter and adhesiveness are dispersed into a fluorinated hydrocarbon solvent (preferably one liquid in a normal state) and then redispersed into an aliphatic hydrocarbon solvent (preferably 5-8C paraffinic hydrocarbon liquid in a normal state) to give the aimed dispersion. The mixed solvent is selected from solvents having specific gravity of that of the fine particles + or -0.1.
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公开(公告)号：JPH01185381A
公开(公告)日：1989-07-24
申请号：JP1044788
申请日：1988-01-19
Applicant: TORAY INDUSTRIES
Inventor： HAGIWARA IKUO , OKA KOICHIRO
IPC: G02F1/1339 , C08J3/12 , C09J163/00 , G02F1/133
Abstract: PURPOSE:To obtain the title adhesive having excellent adhesive power, handleability, etc., by incorporating a specified organosilicon compound into the surface of a spherical particle comprising a mixture of an epoxy compound having a plurality of epoxy groups with a latent curing agent. CONSTITUTION:An epoxy compound having at least two epoxy groups in the molecule (e.g., bisphenol A epoxy resin) is mixed with a latent curing agent (e.g., polyvinylphenol), and this mixture is suspended in water to form a spherical powder. An organosilicon compound of the formula (wherein R is alkyl, alkenyl, aryl, vinyl, amino, epoxy, etc.; X is methoxy, ethoxy, methoxyethoxy, etc.; n is 0, 1 or 2) (e.g., methyltrimethoxysilane) is incorporated into the surface of this spherical powder to give a spherical powdery adhesive suitable as, e.g., an adhesive for electronic material.
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公开(公告)号：JPS6345744B2
公开(公告)日：1988-09-12
申请号：JP660885
申请日：1985-01-17
Applicant: TORAY INDUSTRIES
Inventor： OKA KOICHIRO
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公开(公告)号：JPS63191877A
公开(公告)日：1988-08-09
申请号：JP2312787
申请日：1987-02-03
Applicant: TORAY INDUSTRIES
Inventor： OKA KOICHIRO , HAGIWARA IKUO
IPC: C08J3/12 , C09J163/00
Abstract: PURPOSE:To form a powdery adhesive which comprises spherical particles containing a latent curing agent evenly therein and is capable of satisfying a wide range of requirements for characteristics, by dissolving an epoxy resin and a latent curing agent in an organic solvent, dispersing this solution in a non-compatible dispersing medium to form a suspension, and then removing the organic solvent therefrom. CONSTITUTION:An adhesive composition obtained by dissolving an epoxy resin and a latent curing agent in an organic solvent is dispersed in a non-compatible dispersing medium having a boiling point higher than that of the organic solvent to form a suspension, and the organic solvent is then removed therefrom. Consequently a spherical particulate material is formed which is composed mainly at least an epoxy resin, contains a latent curing agent within the particles, and has an average particle diameter of 0.3-500mum. Spherical particles having an average particle diameter of about 1-20mum thus formed can be suitably used as an adhesive for spot bonding of a liquid crystal display cell. In the above-mentioned process, it is preferable that the boiling point of the organic solvent is 100 deg.C or lower, the non-compatible dispersing medium is water, and the latent curing agent is a condensate or an adduct.
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