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41. 发明专利

JPH1180338A PRODUCTION OF LIQUID CRYSTAL POLYESTER 失效
公开(公告)号：JPH1180338A
公开(公告)日：1999-03-26
申请号：JP24056897
申请日：1997-09-05
申请人： TORAY INDUSTRIES
发明人： ICHIKAWA YASUNORI , KUREMATSU TOSHIO , SUEYOSHI TADAHIRO
IPC分类号： C08G63/60 , C08G63/78
摘要： PROBLEM TO BE SOLVED: To provide a method for producing a liquid crystal polyester in good productivity, by which the amount of a monomer, etc., remaining in the vessel is reduced, and a washing cycle of the interior of the vessel is lengthened by forming a powdery raw material for a liquid crystalline polyester and a liquid into a slurry state, and charging the polymerizer with the slurry-state material. SOLUTION: (A) A powdery raw material of a liquid crystalline polyester having preferably

42. 发明专利

JPH107781A PRODUCTION OF LIQUID-CRYSTAL POLYESTER 失效
公开(公告)号：JPH107781A
公开(公告)日：1998-01-13
申请号：JP16477096
申请日：1996-06-25
申请人： TORAY INDUSTRIES
发明人： ICHIKAWA YASUNORI , SUEYOSHI TADAHIRO , KISHIMOTO AKIHIKO
IPC分类号： C08G63/60 , C08G63/78
摘要： PROBLEM TO BE SOLVED: To provide a process in which the interval of reactor cleaning can be prolonged and by which a high-quality liquid-crystal polyester having excellent heat resistance is produced and improved productivity is attained. SOLUTION: The process comprises condensation-polymerizing the feedstock therefor under stirring at a given temp. using a polymerizer having feedstock inlets, a stirrer, and a temp. controller. During the reaction, the temps. of at least those parts of the wall of the polymerizer which are located on the surface of the liquid phase and located above and near the surface are regulated to 70-200 deg.C. Alternatively, a distillate resulting from the reaction is continuously sprayed over that part of the polymerizer wall which is in contact with the gas phase inside the polymerizer and over that part of the stirrer shaft which is in contact with the gas phase, whereby the polymerizer wall and the shaft are kept clean in conducting the polycondensation.

43. 发明专利

JPH06192404A PRODUCTION OF LIQUID CRYSTALLINE POLYESTER 失效
公开(公告)号：JPH06192404A
公开(公告)日：1994-07-12
申请号：JP34462592
申请日：1992-12-24
申请人： TORAY INDUSTRIES
发明人： KUREMATSU TOSHIO , ICHIKAWA YASUNORI , INOUE SHUNEI
IPC分类号： C08G63/60
摘要： PURPOSE:To produce a liq. crystalline polyester excellent in heat resistance. CONSTITUTION:A liq. crystalline polyester is produced by polycondensation by deacetylation using a polymn. apparatus having a reactor equipped with a feed charge port, a transporting port, a stirrer and a jacket, a polymerizer equipped with a transporting port, a polymer delivery port, a stirrer and a jacket, and a transporting pipe connecting the reactor to the polymerizer under such a condition that the reaction product in the reactor is transported to the polymerizer after the amt. of the distillate from the reactor reaches at least 80% of the theoretical value.

44. 发明专利

JPH04249571A FLAME-RETARDING POLYESTER COMPOSITION 失效
公开(公告)号：JPH04249571A
公开(公告)日：1992-09-04
申请号：JP14762891
申请日：1991-06-19
申请人： TORAY INDUSTRIES
发明人： INOUE SHUNEI , OKAMOTO MASARU , ICHIKAWA YASUNORI
IPC分类号： C08K7/14 , C08L67/00 , C08L67/02
摘要： PURPOSE:To obtain a flame-retarding polyester composition improved in flame retardancy, mechanical properties and residence stability during molding by mixing a melt-anisotropic polyester with a specified polybromostyrene and a filler. CONSTITUTION:A bromostyrene monomer comprising 60wt.% or above dibromostyrene and optionally monobromostyrene and tribromostyrene is polymerized to obtain a polybromostyrene (A) mainly consisting of structural units of the formula and having a number-average molecular weight of 1X10 -30X10 , a weight-average molecular weight of 2X10 -120X10 , an apparent density of 1.0g/cm or above, a compression density of 1.1g/cm or above, and an average pore diameter of 2.5mum or below. 100 pts.wt. melt-anisotropic polyester comprising units selected from among aromatic hydroxycarboxylate units, aromatic dioxy units, aromatic dicarbonyl units, ethylenedioxy units, etc., is mixed with 0.5-60 pts.wt. polymer A and 0-200 pts.wt. filler desirably glass fiber.

45. 发明专利

JPH04225022A PRODUCTION OF LIQUID CRYSTAL POLYESTER 失效
公开(公告)号：JPH04225022A
公开(公告)日：1992-08-14
申请号：JP40850390
申请日：1990-12-27
申请人： TORAY INDUSTRIES
发明人： ICHIKAWA YASUNORI , UENO NAGATAKE
IPC分类号： C08G63/60 , C08G63/78
摘要： PURPOSE:To obtain a liquid crystal polyester having high quality, especially high heat-stability in molding by charging a specific amount of raw material into a vertical-type polyester reactor furnished with stirring blades, and carrying out deacetylation polymerization of the raw material. CONSTITUTION:The objective polyester composed of the structural units of formula I, formula II, formula III and formula IV can be produced by charging raw materials such as p-hydroxybenzoic acid, 4,4'-dihydroxybiphenyl, polyethylene terephthalate, terephthalic acid and acetic anhydride into a reaction vessel 7 of a vertical-type polyester reactor furnished with stirring blades 4 and subjecting the raw materials to deacetylation polymerization reaction. The amount of the raw material is selected to get the volume of the polymerization reaction product corresponding to 50-90% of the inner volume of the reactor from the bottom to the top of the stirring blade 4, attached to the stirring shaft 1 of the above reactor.

46. 发明专利

JPH04103656A LIQUID CRYSTAL POLYESTER RESIN COMPOSITION 失效
公开(公告)号：JPH04103656A
公开(公告)日：1992-04-06
申请号：JP22182890
申请日：1990-08-22
申请人： TORAY INDUSTRIES
发明人： KITAJIMA NORIO , OKAMOTO MASARU , ICHIKAWA YASUNORI
IPC分类号： C08K7/14 , C08J5/00 , C08L67/00
摘要： PURPOSE:To obtain a composition having excellent heat resistance, moldability, fluidity, high mechanical strength, especially weld strength and excellent mechanical anisotropic by blending a liquid crystal polyester comprising specific structural units with a specific amount of glass fibers of different diameter structure. CONSTITUTION:(A) 99-20wt.%, preferably 95-30wt.% anisotropic melt phase- forming liquid crystal polyester comprising structural units shown by formula I, formula II and formula IV or formula I, formula II, formula III and formula IV (R1 is group shown by formula V, etc.; R2 is group shown by formula VI, etc.; X is chlorine or H; group shown by formula IV is in an equimolar amount with groups shown by formula II and formula III, having

47. 发明专利

JPH0476050A LIQUID CRYSTALLINE POLYESTER COMPOSITION 失效
公开(公告)号：JPH0476050A
公开(公告)日：1992-03-10
申请号：JP18951590
申请日：1990-07-19
申请人： TORAY INDUSTRIES
发明人： OKAMOTO MASARU , KITAJIMA NORIO , ICHIKAWA YASUNORI
IPC分类号： C08K5/09 , C08L67/00 , C08L85/00
摘要： PURPOSE:To prepare a resin molding having excellent specific strength, specific modulus, and impact strength and a low mechanical anisotropy by compounding a liq. crystalline polyester consisting of specific structural units with a high- molecular complex and a filler. CONSTITUTION:100 pts.wt. liq. crystalline polyester consisting of structural units of formulas I, II, and V and structural unit of formula III and/or structural unit of formula IV is compounded with 1-200 pts. wt. at least one high-molecular complex consisting of at least one arom. dicarboxylic acid constituting structural unit V and a divalent metal atom, and 0-150 pts.wt. filler are compounded. In formulas III and V, X represents at least one group selected from the group consisting of a group of formula VI, etc.; and Y, at least one group selected from the group consisting of a group of formula V, etc. The sum of molar amts. of structural units II, III, and IV is substantially the same as the molar amt. of structural unit V.

48. 发明专利

JPH03147517A DISK SUBSTRATE 失效
公开(公告)号：JPH03147517A
公开(公告)日：1991-06-24
申请号：JP28766289
申请日：1989-11-02
申请人： TORAY INDUSTRIES
发明人： ICHIKAWA YASUNORI , YAMANAKA TORU , INOUE SHUNEI
IPC分类号： G11B5/82 , C08L67/00 , G11B5/73 , G11B5/733 , G11B7/24 , G11B11/10 , G11B11/105
摘要： PURPOSE:To obtain a disk substrate having excellent molding workability, dimensional accuracy, and mechanical properties by constituting the substrate of liquid crystal polyester containing specified amts. of specified structural units. CONSTITUTION:The liquid crystal polyester contains structural units represented by formulae I - IV, satisfying that the amt. of units of formula I + formula II is 75 - 95mol% of the amt. of formula I + formula II + formula III, the amt. of unit of formula III is 25 - 5mol% of the amt. of formula I + formula II + formula III, the molar ratio of formula I/formula II is 75/25 - 95/5. In formula II, R1 is one or more groups selected from formulae V, VI, etc., R2 in formula IV is one or more groups selected from formulae VII, VIII, etc., X in formula VIII is a hydrogen or chlorine atom. By this method, the obtd. disk substrate, namely a magnetic disk substrate or optical disk substrate, has excellent molding workability, dimensional accuracy, and mechanical properties.

49. 发明专利

JPH0395259A RESIN COMPOSITION 失效
公开(公告)号：JPH0395259A
公开(公告)日：1991-04-19
申请号：JP23261389
申请日：1989-09-07
申请人： TORAY INDUSTRIES
发明人： ICHIKAWA YASUNORI , OKAMOTO MASARU , KITAJIMA NORIO
IPC分类号： C08K7/14 , C08G63/60 , C08L67/00 , C08L67/03 , C08L67/04 , C08L79/08
摘要： PURPOSE:To obtain a resin composition which is excellent in heat resistance, flowability and sliding properties, gives a less anisotropic molded product, and is useful as a sliding material by mixing a specific thermotropic liquid crystal polyester with a fluororesin, a lubricant, etc. CONSTITUTION:The title resin composition is obtained by blending 100 pts.wt. thermotropic liquid crystal polyester comprising structural units of I-III [wherein X is phenylene, biphenylene, a dihydric diphenyl ether group, tetramentylbiphenylene, t-butylphenylene, tolylene, naphthylene, or ethylene; Y is phenylene, naphthylene, a divalent 2,2'-substituted diphenoxyethane residue (the substituent is H or Cl); and the amounts of the structural units II and III are equimolar] (deflection temperature under load: 190-280 deg.C), 0.5-50 pts. fluororesin and/or lubricant, and 5-100 pts. filler.

50. 发明专利

JPH032259A LIQUID CRYSTAL POLYESTER COMPOSITION 失效
公开(公告)号：JPH032259A
公开(公告)日：1991-01-08
申请号：JP13622389
申请日：1989-05-31
申请人： TORAY INDUSTRIES
发明人： OKAMOTO MASARU , ICHIKAWA YASUNORI , INOUE SHUNEI
IPC分类号： C08K3/00 , C08G63/60 , C08K5/29 , C08L67/00
摘要： PURPOSE:To provide a liquid crystal polyester composition having excellent heat resistance represented by good hydrolysis resistance and long period aging resistance by adding a specific amount of a carbodiimide compound to a liquid crystal polyester comprising specified structural units. CONSTITUTION:A liquid crystal composition comprises (A) 100 pts.wt. of an anisotropic melt phase-forming liquid crystal polyester having a thermal deformation temperature of >=150 deg.C and comprising structural units of formulas I, II and III [R1 is a group of formula IV, V, VI, etc., preferably the group of formula IV; R2 and R3 are groups of formulas IV, V, VII (X is H or Cl), etc., preferably the group of formula V], the sum of the groups of formulas I and II being 75-95mol%, the amount of the group of formula III being 25-5mol% based on the total amount of the composition and the molar ratio of the group of formula I to the group of formula II being 75/25-95/5, (B) 0.01-20 pts.wt., preferably 0.05-10 pts.wt., of a carbodiimide compound (preferably dicyclohexylcarbodiimide) and preferably further (C) 0-200 pts.wt. of a filler.

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