公开(公告)号：JPS5827802B2

公开(公告)日：1983-06-11

申请号：JP9317479

申请日：1979-07-24

Applicant: TORAY INDUSTRIES

Inventor： SATO HIROSHI ,  ICHIKAWA YASUNORI ,  HIRAI TOSHIMASA

IPC: C08F6/00 ,  C08F6/14

公开(公告)号：JPH107780A

公开(公告)日：1998-01-13

申请号：JP16476996

申请日：1996-06-25

Applicant: TORAY INDUSTRIES

Inventor： ICHIKAWA YASUNORI ,  SUEYOSHI TADAHIRO ,  KISHIMOTO AKIHIKO

IPC: C08G63/60 ,  C08G63/78

Abstract: PROBLEM TO BE SOLVED: To provide a process whereby a liq.-crystalline polyester having high qualities, esp. an excellent heat resistance, can be produced at an improved productivity while reducing the amt. of a monomer or oligomer remaining in a polymerizer to prolong the cleaning cycle of the polymerizer by stirring under specified conditions. SOLUTION: In producing a liq.-crystalline polyester by polycondensation by acetic acid removal with a polymerizer having a material charge port, a stirring device, and a jacket, the polycondensation is conducted while the reactants are stirred under a shear rate of 150-1.000 (1/sec). Usually at least one material selected from among a hydroxycarboxylic acid, an acetoxycarboxylic acid, a dihydroxy compd., a diacetoxy compd., a dicarboxylic acid, and a polyester comprising dioxy units and dicarbonyl units is used. Pref. the reactants are stirred under a shear rate of 150-1,000 (1/sec) for at least 10% of the time from the beginning of stirring and temp. rise until the distillation ratio reaches 90%.

公开(公告)号：JP2550800B2

公开(公告)日：1996-11-06

申请号：JP14762891

申请日：1991-06-19

Applicant: TORAY INDUSTRIES

Inventor： INOE SHUNEI ,  OKAMOTO MASARU ,  ICHIKAWA YASUNORI

IPC: C08K7/14 ,  C08L67/00 ,  C08L67/02

公开(公告)号：JP2505643B2

公开(公告)日：1996-06-12

申请号：JP29859490

申请日：1990-11-02

Applicant: TORAY INDUSTRIES

Inventor： ICHIKAWA YASUNORI ,  INOE SHUNEI ,  OKAMOTO MASARU

IPC: C08K7/14 ,  C08L67/00 ,  C08L67/03

公开(公告)号：JPH07118394A

公开(公告)日：1995-05-09

申请号：JP26273693

申请日：1993-10-20

Applicant: TORAY INDUSTRIES

Inventor： KURIKI NOBUO ,  ICHIKAWA YASUNORI ,  KIMURA TAKESHI

IPC: C08J3/12 ,  B29B9/06 ,  B29B9/12 ,  B29K67/00 ,  B29K105/16 ,  C08K3/00 ,  C08K5/00 ,  C08L67/00 ,  C08L67/02

Abstract: PURPOSE:To obtain a high yield of the pellets with a shape excellent in ease of feeding and in permitting constant feeding by performing pelletization under specified temperature conditions in producing the pellets comprising a mixture of a specified liquid crystal polyester with, a specified amount of a filler. CONSTITUTION:In producing the pellets comprising a mixture of 100 pts.wt. liquid crystal polyester consisting of structural units represented by formulas A-I, II and IV, or A-I, III and IV, or A-I, II, III and IV [wherein R1 and R2 are each at least one group selected from those of formulas B and C; X is H or Cl; and the structural units (II+III) and the structural units IV are substantially equimolar] with 0-200 pts.wt. filling materials, such as a filler and an additive, pelletization is perfermed under temperature conditions satisfying the relation of the formula: (TmX0.35

公开(公告)号：JPH04225023A

公开(公告)日：1992-08-14

申请号：JP40850490

申请日：1990-12-27

Applicant: TORAY INDUSTRIES

Inventor： ICHIKAWA YASUNORI ,  UENO NAGATAKE

IPC: C08G63/60 ,  C08G63/78

Abstract: PURPOSE:To obtain a polyester having excellent mechanical properties and fluidity by charging a raw material for forming a polyester into a reaction vessel, and carrying out the polycondensation reaction under specific condition while stirring the content in a direction to scrape down the reaction product. CONSTITUTION:The objective polyester having optical anisotropy and composed of the structural units of formula I, formula II, formula III and formula IV is produced by charging polyester-forming raw materials such as p- hydroxybenzoic acid, 4,4'-dihydroxybiphenyl, terephthalic acid, polyethylene terephthalate and acetic anhydride in an autoclave, and carrying out the polycondensation reaction in an inert gas atmosphere such as nitrogen gas at on the wall surface of the reactor.

公开(公告)号：JPH0481453A

公开(公告)日：1992-03-16

申请号：JP19653690

申请日：1990-07-25

Applicant: TORAY INDUSTRIES

Inventor： ICHIKAWA YASUNORI ,  OKAMOTO MASARU ,  KITAJIMA NORIO

IPC: C08K3/00 ,  B29D15/00 ,  B29K67/00 ,  C08L67/00 ,  C08L67/02

Abstract: PURPOSE:To obtain the subject resin composition having excellent moldability and heat-resistance and suitable for gear by compounding a specific amount of a filler to a specific liquid crystal polyester. CONSTITUTION:The objective composition is produced by compounding (A) 100 pts.wt. of a liquid crystal polyester moldable by melt-molding and composed of the structural units of formula I, formula II, formula III and formula IV (R1 is group of formula V, formula VI, etc.; R2 is group of formula V, formula VI, formula VII, etc.) wherein the amount of I is 40-90mol% based on I+II+III and the molar ratio of II/III is 9/l to 1/9 and (B) 5-200 pts.wt. (preferably 25-100 pts.wt.) of a filler (e.g. glass fiber).

公开(公告)号：JPH0481452A

公开(公告)日：1992-03-16

申请号：JP19653590

申请日：1990-07-25

Applicant: TORAY INDUSTRIES

Inventor： ICHIKAWA YASUNORI ,  OKAMOTO MASARU ,  KITAJIMA NORIO

IPC: C08K3/00 ,  B29D15/00 ,  B29K67/00 ,  C08J5/00 ,  C08L67/00 ,  C08L67/02

Abstract: PURPOSE:To obtain the subject resin composition having excellent moldability and heat-resistance and suitable for gear for precision part by compounding a specific amount of a filler to a specific liquid crystal polyester. CONSTITUTION:The objective composition is produced by compounding (A) 100 pts.wt. of a liquid crystal polyester moldable by melt-molding and composed of the structural units of formula I, formula II, formula III and formula TV (R1 is group of formula V, etc. ; R2 is group of formula VI, etc.) wherein the amount of I+II is 75-95mol% based on I+II+III, that of III is 25-5mol% based on I+II+III and the molar ratio of I/II is 75/25 to 95/5, (B) 5-200 pts.wt. (preferably 25-100 pts. wt.) of a filler (e.g. glass fiber) and, as necessary, (C) 0.2-30 pts.wt. (preferably 0.5-20 pts.wt.) of an organic flame-retardant (organic bromine compound and/or organic phosphorus compound).

公开(公告)号：JPH03220257A

公开(公告)日：1991-09-27

申请号：JP29859490

申请日：1990-11-02

Applicant: TORAY INDUSTRIES

Inventor： ICHIKAWA YASUNORI ,  INOUE SHUNEI ,  OKAMOTO MASARU

IPC: C08K7/14 ,  C08L67/00 ,  C08L67/03

Abstract: PURPOSE:To prepare the title compsn. which is anisotropic and excellent in the heat resistance, moldability, and high-temp. mechanical properties by compounding a glass fiber having a specific diameter into a melt-moldable liq. crystal polyester resin comprising specific structural units. CONSTITUTION:5-200 pts.wt. glass fiber having a mean diameter of 3-9mum is compounded into 100 pts.wt. melt-moldable liq. crystal polyester resin which comprises structural units I, II, III, and IV shown by formula I, II, III, and IV, respectively (wherein R1 is a group of formula V, etc.; R2 is a group of formula VI, etc.; and X is H or Cl) in ratios of (I+II)/(I+I+III), (III)/(I+II+III), and (I)/(II) of 75-95mol%, 25-5mol%, and (75:25)-(95:5) (by mole), respectively.

公开(公告)号：JPH03182547A

公开(公告)日：1991-08-08

申请号：JP32338089

申请日：1989-12-12

Applicant: TORAY INDUSTRIES

Inventor： INOUE SHUNEI ,  OKAMOTO MASARU ,  ICHIKAWA YASUNORI

IPC: C08L67/00 ,  C08L67/02 ,  C08L67/03 ,  C08L101/00 ,  C08L101/04

Abstract: PURPOSE:To prepare the title compsn. giving a molded article excellent in the flame retardance, heat resistance, mechanical properties, and appearance by dispersing a specified amt. of a polymeric flame retardant in a liq. crystalline polyester in such a way that the dispersed retardant particle has a specified diameter. CONSTITUTION:0.2-30 pts.wt. polymeric the flame retardant (e.g. a brominated polystyrene) is dispersed in 100 pts.wt. liq. crystal polyester [e.g. a compd. of the formula wherein (k/l/m/n=75/10/15/25)], in such a way that the dispersed retardant particle has a mean diameter of 2.5mu or lower.