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公开(公告)号：JPS5932565B2
公开(公告)日：1984-08-09
申请号：JP8315977
申请日：1977-07-12
Applicant: Toray Industries
Inventor： KANDA TAKUMA
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公开(公告)号：JPS5822566B2
公开(公告)日：1983-05-10
申请号：JP5959375
申请日：1975-05-21
Applicant: TORAY INDUSTRIES
Inventor： KANDA TAKUMA
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公开(公告)号：JPS5853920A
公开(公告)日：1983-03-30
申请号：JP15297381
申请日：1981-09-29
Applicant: TORAY INDUSTRIES
Inventor： KANDA TAKUMA , NOYORI MASARU
Abstract: PURPOSE:To obtain the titled novel copolyester, consisting of a p-oxybenzoic acid unit component and two specific copolymerization components, capable of giving fibers having improved dynamic characteristics at high temperature, and scarcely sticking in the heat treatment. CONSTITUTION:p-Acetoxybenzoic acid, 4,4'-diacetoxybiphenyl and 3,4'-and/or 4,4'-hydroxydibenzoic acid are deacetylated and polymerized to give the aimed copolyester consisting of (A) 50-74mol% structural units expressed by formulaI, (B) 13-25mol% structural units expressed by formula II and (C) 13- 25mol% structural units expressed by formula III (p,m- and/or p,p-forms). The polymerization temperature may be usually 280-360 deg.C, and preferably increased as the melting point of the polymer increases with increasing polymerization degree.
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公开(公告)号：JPS5181880A
公开(公告)日：1976-07-17
申请号：JP591775
申请日：1975-01-14
Applicant: TORAY INDUSTRIES
Inventor： ASAKURA TOSHUKI , ITOGA MASAAKI , KANDA TAKUMA , MIZOCHI MASANORI
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公开(公告)号：JPS646118A
公开(公告)日：1989-01-10
申请号：JP15404387
申请日：1987-06-19
Applicant: TORAY INDUSTRIES
Inventor： KANDA TAKUMA , KIMURA HAJIME
Abstract: PURPOSE:To obtain a copolyimide fiber, containing phenylenediamine and biphenyltetracarboxylic acid dianhydride in a specific proportion, having excellent heat resistance, flame retardance and high-temperature dimensional stability and practical mechanical characteristics. CONSTITUTION:The aimed copolyimide fiber, containing a diamine component consisting of (A) (i) p-phenylenediamine and (ii) m-phenylenediamine and acid anhydride component consisting of (B) 3,3',4,4'-biphenyltetracarboxylic acid dianhydride and suitable as electrical insulating material, flameproof clothing, filters, vehicular inner trim materials, etc. The ratio of the component (i) in the above-mentioned diamine component is 30-80mol.%.
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Patent Agency Ranking
公开(公告)号：JPS6290314A
公开(公告)日：1987-04-24
申请号：JP23203585
申请日：1985-10-17
Applicant: TORAY INDUSTRIES
Inventor： KIMURA HAJIME , KANDA TAKUMA
Abstract: PURPOSE:The titled fibers, having specific repeating units and improved heat resistance, thermal dimensional stability and mechanical properties and useful for various industrial material used, e.g. electrical insulating materials, filters, flameproofing clothing, vehicular interior trim materials, etc. CONSTITUTION:Fibers having the structure expressed by the formula (R is as follows; 30-80mol% repeating units are p-phenylene; the rest of the repeating units are m-phenylene). 50-70mol% repeating units are preferably p-phenylene groups and 30-50mol% repeating units are preferably m-phenylene groups.
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公开(公告)号：JPS57137319A
公开(公告)日：1982-08-24
申请号：JP2150481
申请日：1981-02-18
Applicant: TORAY INDUSTRIES
Inventor： KANDA TAKUMA , MATSUDA TOSHIKAZU
Abstract: PURPOSE:A novel wholly aromatic polyetherester that is composed of a specific structural unit, thus being readily melt polymerized and melt formed at relatively low temperature into fiber, films and other products with high heat resistance, flame retardancy and mechanical properties. CONSTITUTION:For example, hydroquinone diacetate and 3,3'-(4,4'-biphenylilenedioxy)dibenzoic acid are heated at 280 deg.C for 30min and polymerized under reduced pressure at 340 deg.C for 2hr to give the objective crystalline polyetherester having melting points of 312 deg.C and 326 deg.C and a structural unit of the formula. EFFECT:The resultant polymer shows high resistance to a wide range of organic solvents, acids and alkalis. USE:Fiberglass-reinforced composite materials, filters and heat-resistant electrical insulation materials.
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公开(公告)号：JPS5790015A
公开(公告)日：1982-06-04
申请号：JP16472380
申请日：1980-11-25
Applicant: TORAY INDUSTRIES
Inventor： KANDA TAKUMA , MATSUDA TOSHIKAZU
Abstract: PURPOSE:The titled polymer which is melt-moldable and readily crystallizable and has excellent heat resistance, electrical properties, etc., consisting of specified structural units having ether and ester linkages and prepared by melt polymerization. CONSTITUTION:The fully aromatic polyether-ester of this invention consists of structural units of formulaI, wherein n is 3 or 4, is melt-moldable and can be readily crystallized. It is readily prepared by a melt polymerization process. For example, it is prepared by a deacetylation polymerization process in which a component of formula II is reacted with isophthalic acid or by a dephenolation polymerization process in which a compound of formula III is reacted with diphenyl isophthalate. The produced polymer is suitable in the production of fibers, films or the like and is used in filters, coverings of electric appliances, interior decorating materials, heat-resistant electrical insulating materials, etc.
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公开(公告)号：JPS5543139A
公开(公告)日：1980-03-26
申请号：JP11636178
申请日：1978-09-21
Applicant: TORAY INDUSTRIES
Inventor： KANDA TAKUMA , KAWAI TAKASHI
Abstract: PURPOSE:The reaction between p-dihalobenzene and alkali sulfide is conducted in an organic amide solvent in the presence of an alkali salt of organic sulfonate to produce title composition having high polymerization degree and being melt moldable. CONSTITUTION:The reaction of p-dihalobenzene with alkali sulfide except lithium sulfide is carried out in an oarganic amide solvent in the presence of at least one of aromatic sulfonate alkali metal salts of formula I and II (R is 1-12C alkyl, n is 0-2, M is Na, K, Rb, Cs) to produce high-viscosity poly-p-phenylene sulfied. The p-dihalobenzene used is preferably p-dichlorobenzene and the molar ratio of the p- dihalobenzene to the alkali sulfide is 0.95:1-1.2:1. The molar ratio of the aromatic sulfonate alkali metal salt added to the alkali sulfide is 0.1-1.5.
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公开(公告)号：JPS5522052A
公开(公告)日：1980-02-16
申请号：JP9369478
申请日：1978-08-02
Applicant: TORAY INDUSTRIES
Inventor： KANDA TAKUMA , KAWAI TAKASHI
Abstract: PURPOSE:An aromatic polyamide copolymer that has a combination of specific structure units, thus being high soluble in an organic solvent is employed to produce title fibers with a strength of over about 16g/de, a Young modulus of over about 300g/de and high fatigue resistance. CONSTITUTION:An aromatic copolyamide that comprises structure unit A of formula I, unit B of formula II, and unit C of formula III and has MA, MC, mole% of units A and C respectively, satisfying 10
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