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公开(公告)号：JPH02102245A
公开(公告)日：1990-04-13
申请号：JP25463188
申请日：1988-10-07
Applicant: TORAY INDUSTRIES
Inventor： KAYABA KEIJI , OKAMOTO MASARU
Abstract: PURPOSE:To improve heat resistance and plating characteristics by incorporating a specified liq. crystal polyester and a styrenic resin. CONSTITUTION:Deacetylation polycondensation of diacylated compd. of an arom. dihydroxy compd. (e.g., p-acetoxybenzoic acid) with an arom. dicarboxylic acid (e.g., terephthalic acid) is performed, if necessary, in the presence of polyethylene terephthalate to obtain a liq. crystal polyester (A) consisting of structural units of formulas I-III (wherein X is one or more groups selected from formulas IV-VIII and carbonyls in formulas II and III are at para- or meta-positions with respect each other and more than 50mol% are at para-positions), having a heat distortion temp. of 190-280 deg.C, a liq. crystallization initiating temp. of 330 deg.C or lower, a melt viscosity of 10,000P or smaller, an intrinsic viscosity of 0.5dl/g or larger and forming an anisotropic molten phase. Then, 99-1wt.% component A is compounded with 1-99wt.% styrenic resin (B) (e.g., ABS resin).
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公开(公告)号：JPH0297555A
公开(公告)日：1990-04-10
申请号：JP24870688
申请日：1988-09-30
Applicant: TORAY INDUSTRIES
Inventor： KAYABA KEIJI , OKAMOTO MASARU
Abstract: PURPOSE:To obtain the title composition improved in soldering heat resistance, heat resistance and flow by mixing a liquid polyester which forms a specified anisotropic molten phase with a polyarylene oxide. CONSTITUTION:A diacylated aromatic dihydroxy compound (e.g., p- acetoxybenzoic acid) and an aromatic dicarboxylic acid (e.g., terephthalic acid) are subjected to polycondensation through the elimination of acetic acid in the presence of, optionally, polyethylene terephthalate to obtain a liquid crystal polyester (A) comprising 40-90mol% structural units of formula I, structural units of formula II and structural units of formula III (wherein X is at least one group selected from among formulas IV-VI, and -CH2CH2-, the carbonyls of formulas II and III are para or meta to each other, and at least 50mol% of them are in para position), having a formula II to formula III molar ratio of 1/9-9/1, a heat distortion temperature of 160-280 deg.C, a liquid crystal initiation temperature
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公开(公告)号：JPH0251524A
公开(公告)日：1990-02-21
申请号：JP20191788
申请日：1988-08-15
Applicant: TORAY INDUSTRIES
Inventor： OKAMOTO MASARU , SUZUE SHIGERU , KAYABA KEIJI
IPC: C08K5/13 , C08G63/00 , C08G63/60 , C08G63/78 , C08G63/82 , C08K5/00 , C08K5/49 , C08L67/00 , C08L67/02 , C09K19/04
Abstract: PURPOSE:To obtain the title compsn. having excellent stability of residence during molding, mechanical properties under a use condition at high temp. and resistance to heat discoloration by incorporating a polymn. catalyst and/or a heat-resistant agent under specified conditions when this compsn. forming an anisotropic molten state is prepd. CONSTITUTION:When an arom. polyester contg. a polymn. catalyst (e.g., dibutyltin maleate) and/or a heat-resistant agent (e.g., a compd. of formula I or II) and forming an anisotropic molten state (e.g., a copolymer of p- hydroxybenzoic acid, 4,4'-dihydroxybiphenyl and terephthalic acid) is prepd., 0.001-2wt.%, based on said polyester, polymn. catalyst and/or heat-resistant agent coated with an arom. polyester which is the same as or different from said arom. polyester (e.g., polyethylene terephthalate) is added thereto and homogeneously dispersed before the polymn. of the arom. polyester is completed.
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公开(公告)号：JPH01161015A
公开(公告)日：1989-06-23
申请号：JP32075387
申请日：1987-12-17
Applicant: TORAY INDUSTRIES
Inventor： SUZUE SHIGERU , TABATA KENICHI , OKAMOTO MASARU
Abstract: PURPOSE:To produce a polyester excellent in heat resistance, by adding a low- molecular weight monocarboxylic acid to an initial reaction system of a specific aromatic hydroxycarboxylic acid, a polyester, a diol, a dicarboxylic acid, and acetic anhydride, and reacting them. CONSTITUTION:An aromatic hydroxycarboxylic acid of formula I (e.g., p- hydroxybenzoic acid), a polyester of formula II of a condensate obtained from an aromatic dicarboxylic acid and an alkylene glycol (e.g., polyethylene terephthalate), an aromatic diol of formula III (e.g., 4,4'-dihydroxybiphenyl), an aromatic dicarboxylic acid of formula IV (wherein Ar1-Ar4 are each a divalent aromatic group; and R1 is divalent alkylene) (e.g., terephthalic acid), acetic anhydride, and a low-molecular weight monocarboxylic acid (e.g., acetic acid) are mixed and heated to produce a polyester. The lowering of the molecular weight of the resulting polyester by heat treatment is small.
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公开(公告)号：JPH01153719A
公开(公告)日：1989-06-15
申请号：JP31350887
申请日：1987-12-10
Applicant: TORAY INDUSTRIES
Inventor： SUZUE SHIGERU , OKAMOTO MASARU , TABATA KENICHI
IPC: C08G63/60
Abstract: PURPOSE:To obtain a polyester capable of giving an inexpensive molded article having high heat-resistance and resistant to the lowering of molecular eight with heat, by adding an aromatic dicarboxylic acid to a reaction system after the reaction. CONSTITUTION:A copolyester is produced from an aromatic hydroxycarboxylic acid of formula I, a condensed polyester of an aromatic dicarboxylic acid of formula II and an alkylene glycol, an aromatic diol of formula III, an aromatic dicarboxylic acid of formula IV (Ar1-Ar4 are bivalent aromatic group; R1 is bivalent alkylene) and acetic anhydride. In the above process, a part or total of the aromatic dicarboxylic acid is charged to the reaction system at 100-290 deg.C, preferably 150-280 deg.C after the acetylation reaction and the initial polymerization reaction and when a prescribed amount of acetic acid is distilled off from the system. The reaction is continued and the product is polymerized at 250-330 deg.C in vacuum to obtain the objective polymer.
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Patent Agency Ranking
公开(公告)号：JPS63280732A
公开(公告)日：1988-11-17
申请号：JP11747787
申请日：1987-05-14
Applicant: TORAY INDUSTRIES
Inventor： OKAMOTO MASARU , INOUE SHUNEI , KATAOKA SHIRO
IPC: C08G63/60 , C08G63/682 , C09K19/38
Abstract: PURPOSE:To obtain the titled melt-moldable polyester having excellent fluidity, heat-resistance and mechanical properties and suitable as electronic and electrical apparatus parts, etc., by copolymerizing plural kinds of aromatic dihydroxy compounds at a specific ratio. CONSTITUTION:The objective polyester having a logarithmic viscosity of 1.0-20.0dl/g can be produced by (1) mixing (A) p-hydroxybenzoic acid forming the structural unit of formula I, (B) terephthalic acid and/or isophthalic acid forming a part of the structural unit of formula II, (C) 4,4'-dihydroxybiphenyl forming the remaining part of the structural unit of formula II, (D) t- butylhydroquinone forming a part of the structural unit of formula III and, if necessary, (E) hydroquinone, etc., forming a part of the structural unit of formula IV (X is group of formula V, etc.) and (2) subjecting the mixture e.g. to deacetylation polycondensation reaction. The amount of the unit of formula I in the mixture is 30-90mol.% and the molar ratios of II/III and IV/(II+III+ IV) are 5/95-20/80 and 0-40mol.%, respectively.
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公开(公告)号：JPS63120729A
公开(公告)日：1988-05-25
申请号：JP26570486
申请日：1986-11-10
Applicant: TORAY INDUSTRIES
Inventor： INOUE SHUNEI , OKUMURA ATSUSHI , OKAMOTO MASARU
Abstract: PURPOSE:To form an aromatic polymer excellent in flow, heat resistance and impact resistance, by combining three specified kinds of structural units. CONSTITUTION:This aromatic polymer consists of structural units I-III represented by formulas I-III, wherein structural units I amount to 40-90mol% based on the total, structural units (II+III) amount to 60-10mol% based on the total and the ratio of structural units (III) to structural units (II+III) is 1-40mol%. In the formulas I-III, X is at least two groups selected from the groups of the formula IV, V and VI, Y is at least one group selected from among -OXO- and groups of formulas VII and VIII and Z is a group of formula IX or X, provided that a combination in which Y is -OXO- and Z is a group of formula IX is excluded.
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公开(公告)号：JPS63112620A
公开(公告)日：1988-05-17
申请号：JP25578486
申请日：1986-10-29
Applicant: TORAY INDUSTRIES
Inventor： INOUE SHUNEI , OKAMOTO MASARU , KATAOKA SHIRO
IPC: C08G63/60 , C08G63/682
Abstract: PURPOSE:To obtain the title polyester which can give a molding excellent in flow, heat resistance, optical anisotropy and mechanical properties, comprising four specified kinds of structural units. CONSTITUTION:An acylation product (A) of a hydroxycarboxylic acid such as p-hydroxybenzoic acid, an acylation product (B) of an aromatic dihydroxy compound, such as t-butylhydroquinone diacetate or 2,6-diacetoxynaphthalene, and an aromatic dicarboxylic acid (C) such as terephthalic acid are subjected to polycondensation through elimination of acetic acid to obtain the title polyester comprising 40-90mol% structural units of formula I and 60-10mol% structural units of formulas II-IV (wherein X is a group of any one of formulas V-IX or the like, Y is a group of formula V, VII or IX, provided that a combination in which X is a group of formulas VI and/or VII and Y is a group of formula V is excluded) and having a molar ratio (units of formula II/units of formula III) of 8-2/2-8 and a ratio (units of formula IV/units of formulas II-IV) of 0-40mol%. This polyester is melt-molded at a temperature
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公开(公告)号：JPS6333418A
公开(公告)日：1988-02-13
申请号：JP17574286
申请日：1986-07-28
Applicant: TORAY INDUSTRIES
Inventor： OKAMOTO MASARU , INOUE SHUNEI , KATAOKA SHIRO
Abstract: PURPOSE:To provide the titled novel aromatic polyester having a specific structure and composition composed of a condensation product of an aromatic oxycarboxylic acid, an aromatic dicarboxylic acid and a bisphenol compound, moldable by meltmolding and having excellent fluidity, heat-resistance and mechanical properties. CONSTITUTION:The objective polyester composed of the units of formula I-IV [X is (substituted) phenylene, biphenylene, naphthylene, etc.; Y is phenylene, biphenylene, naphthylene, etc.] and having a longarithmic viscosity of 0.5-15dl/g measured in pentafluorophenol (0.1g/dl concentration at 60 deg.C) can be produced by deacetylation polymerization of p-acetoxybenzoic acid, a substituted hydroquinone, diacetate of bisphenol compound, etc., and terephthalic acid, etc., in nitrogen gas atmosphere. The ratio of the structural unit of formula I in the above polymer is 40-90mol% and that of the structural units of formula II-IV is 60.10mol%. The molar ratio of the unit of formula II/III is 8/2-2/8 and that of IV/(II-IV) is 1-40mol%.
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公开(公告)号：JPS631972B2
公开(公告)日：1988-01-14
申请号：JP10824780
申请日：1980-08-08
Applicant: TORAY INDUSTRIES
Inventor： IIDA HIROSHI , OKAMOTO MASARU , YANAGI MASAKATA
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