OPTICALLY ANISOTROPIC POLYESTER
    101.
    发明专利

    公开(公告)号:JPH0333125A

    公开(公告)日:1991-02-13

    申请号:JP16741889

    申请日:1989-06-29

    Abstract: PURPOSE:To obtain the title polyester excellent in heat resistance and mechanical properties and useful as, e.g. a plastics as a substitute for a metal by constituting it from specified structural units. CONSTITUTION:This polyester is composed of structural units of formulas I-III (wherein R1-3 are each a group selected from among groups of formula X, etc.) and at least one kind of units selected from among imide bond-containing structural units of formulas IV-IX (wherein R4-9 and R11-14 are groups such as R1) or structural units of formulas I and II and at least one kind of units selected from among imide bond-containing structural units of formulas IV-IX, and contains 1-30mol%, based on the entire, total of structural units of formulas IV-IX.

    THERMOTROPIC LIQUID CRYSTAL POLYESTER COMPOSITION

    公开(公告)号:JPH0314863A

    公开(公告)日:1991-01-23

    申请号:JP7431290

    申请日:1990-03-23

    Abstract: PURPOSE:To prepare a thermotropic liquid crystal polyester compsn. excellent in the heat resistance represented by the hydrolysis resistance and long-term aging properties by compounding an org. epoxy compd. into a thermotropic liquid crystal polyester comprising specific structural units. CONSTITUTION:0.01-10 pts.wt. org. epoxy compd. is compounded into 100 pts.wt. thermotropic liquid crystal polyester which forms an anisotropic molten phase having a heat distortion temp. of 150 deg.C or higher and comprises structural units of formulas I to IV in molar ratios of (I+II)/(I+II+III), III/(I+II+III), and I/II of 0.750.95, 0.25-0.05, and 75/25-95/5 respectively, wherein R1 is formula V; and R2 is formula VI. The org. epoxy compd. is not particularly limited.

    PRODUCTION OF THERMOPLASTIC RESIN COMPOSITION

    公开(公告)号:JPH02206644A

    公开(公告)日:1990-08-16

    申请号:JP2687789

    申请日:1989-02-06

    Abstract: PURPOSE:To obtain thermoplastic resin composition having excellent mechanical properties and surface gloss by compounding specific liquid-crystalline polyester with specific amount of previously fiber-reinforced thermoplastic resin. CONSTITUTION:In following composition, B is previously melt-blended with C and then, melt-blended with A. The composition is composed of 100 pts.wt. resin composition comprising (A) 50-99wt.% liquid-crystalline polymer containing preferably structural formula expressed by formula III-formula V selected from structural unit expressed by formula I and formula II (X is bifunctional aromatic residue; Y and Z are bifunctional aromatic, aliphatic or alicyclic residue; R is O or NH) and having 150-280 deg.C heat distortion temperature and (B) 50-1wt.% thermoplastic polymer (e.g. polyamide or polycarbonate) and 1-200 pts.wt., preferably 5-150 pts.wt. (C) filler (e.g. glass fiber).

    THERMOPLASTIC RESIN COMPOSITION
    104.
    发明专利

    公开(公告)号:JPH01292058A

    公开(公告)日:1989-11-24

    申请号:JP12133388

    申请日:1988-05-18

    Abstract: PURPOSE:To obtain a thermoplastic resin composition having excellent heat resistance, moldability, fluidity, hydrolysis resistance and mechanical properties, by blending a liquid crystal polyester having a specific structure with polyphenylene sulfide. CONSTITUTION:A composition comprising (A) 1-99wt.% liquid crystal polyester which consists of structural units shown by formula I-formula III (X is group shown by formula IV, formula V, CH2CH2, etc., CO groups of the formula II and formula III are mutually in para- or meta-position and >=50mol% of the CO groups are in para-position), has 190-280 deg.C heat distortion temperature, =10,000 poise melt viscosity and forms anisotropic melt phase, (B) 99-1wt.% polyphenyl sulfide and preferably further containing 0.1-70 pts.wt. based on 100 pts.wt. total amounts of the components A and B, 0.1-70 pts.wt. olefinic polymer, 5-400 pts.wt. reinforcing agent (fibrous or granular) and 1-5,000 pts.wt. thermoplastic polyester.

    CHLORINE-CONTAINING COPOLYMERIZED POLYESTER HAVING HIGH FLUIDITY

    公开(公告)号:JPS63223038A

    公开(公告)日:1988-09-16

    申请号:JP5536487

    申请日:1987-03-12

    Abstract: PURPOSE:To obtain the titled polyester composed of plural structural units, moldable by melt-molding and suitable for the molding of thin-walled parts and precision parts, etc., by copolymerizing a specific amount of a hydroxycarboxylic acid. CONSTITUTION:The objective polyester containing 30-90mol.% of a structural unit of formula I (X is bivalent benzene ring, etc.), formula II (Y is bivalent benzene ring, etc.) and formula III (Y is bivalent benzene ring, etc.) at a ratio [II/(II+III)] of 10-100mol.% and having a melt viscosity of preferably 100-1,500 poise can be produced by mixing (A) an aromatic dicarboxylic acid such as 1,2-bis(2-chlorophenoxy)ethane-4,4'-dicarboxylic acid with e.g. an acylated product of (B) p-hydroxybenzoic acid and/or 6-hydroxy-2-naphthoic acid and (C) a dioxy compound (e.g. hydroquinone) and subjecting the mixture to deacetylating polycondensation reaction.

    HEAT-RESISTANT AROMATIC POLYESTER
    106.
    发明专利

    公开(公告)号:JPS62292832A

    公开(公告)日:1987-12-19

    申请号:JP13612786

    申请日:1986-06-13

    Abstract: PURPOSE:To obtain a melt-moldable aromatic polyester excellent in heat resistance and flow, comprising three specified kinds of structural units. CONSTITUTION:This heat-resistant aromatic polyester comprises three kinds of structural units of formulas I, II and III, wherein structural units (I) amount to 55-80mol% based on the total, structural units [II+III] amount to 45-20mol% based on the total and the molar ratio of structural units (II) to structural units (III) is 1-5. In formulas I-III, X is at least one group selected from among groups of formulas IV and V, etc., and Y is at least one group selected from among groups of formulas VI and VII, etc., provided that the case where Y is a group of formula VI when X is at least one group selected from groups of formulas IV and V is excluded. Said polyester can be produced by, for example, subjecting an aromatic dihydroxy compound such as p- hydroxybenzoic acid or t-butylhydroquinone, a dicarboxylic acid such as terephthalic acid and acetic anhydride to a polycondensation reaction by elimination of acetic acid.

    THERMOPLASTIC POLYESTER COMPOSITION
    107.
    发明专利

    公开(公告)号:JPS62218436A

    公开(公告)日:1987-09-25

    申请号:JP6077686

    申请日:1986-03-20

    Abstract: PURPOSE:To obtain the titled composition excellent in mechanical properties at high temperature, appearance of a molding, heat resistance and hydrolysis resistance, by mixing a thermoplastic polyester with a reinforcement, polyphenylene sulfide and a glycidyl group-containing olefin copolymer. CONSTITUTION:Polyphenylene sulfide which is a polymer containing at least 70mol% repeating units of formula I (wherein -Ph- is a group of formula II, III or IV or the like) is heated with water by agitating to 80 deg.C or above to obtain a hot-water-treated polyphenylene sulfide (B). 100pts.wt. thermoplastic polyester (A) having an intrinsic viscosity of 0.5-1.3 (as measured in a 0.5% o-chlorophenol solution at 25 deg.C) is mixed with 1-100pts.wt. component B, 5-150 pts.wt. fibrous and/or particulate reinforcements (C) (e.g., glass fiber chopped strand) and 0.5-80pts.wt. glycidyl group-containing olefin copolymer (D) comprising an alpha-olefin and a glycidyl ester of an alpha,beta-unsaturated carboxylic acid (e.g., ethylene/glycidyl methacrylate copolymer).

    PRODUCTION OF POLYESTER
    108.
    发明专利

    公开(公告)号:JPS62199615A

    公开(公告)日:1987-09-03

    申请号:JP4183686

    申请日:1986-02-28

    Abstract: PURPOSE:To obtain the titled high-polymerization degree polyester outstanding in solvent and heat resistances and mechanical properties, by interfacial polycondensation with a dicarboxylic acid dichloride, using each specific bisphenol, catalyst and organic solvent. CONSTITUTION:First, an organic solvent solution is prepared by dissolving in (A) an organic solvent, i.e. a 1-10C halogenated hydrocarbon of a boiling point T >=35 deg.C (e.g. methylene dichloride) (B) pref. 1-40wt% of isophthaloyl dichloride and/or terephthaloyl dichloride. This solution is then incorporated with (C) an aqueous alkali solution of bisphenol >=50mol% of which is bis(4- hydroxyphenyl)sulfone, with a concentration e.g. 1-30wt% and (D) a phosphonium salt of formula (R1-R4 are each 1-16C hydrocarbon; X is chlorine, etc.) followed by polycondensation at (T-15)-(T+15) deg.C, thus obtaining the objective polyester.

    POLYESTER RESIN COMPOSITION
    109.
    发明专利

    公开(公告)号:JPS62174255A

    公开(公告)日:1987-07-31

    申请号:JP1573386

    申请日:1986-01-29

    Abstract: PURPOSE:To obtain a resin compsn. having excellent antistatic properties, heat resistance and mechanical properties, by blending polybutylene terephthalate with a metal salt of a specified alkylsulfonic acid and a hindered phenol compd. CONSTITUTION:A compsn. is obtd. by blending 100pts.wt. polybutylene terephthalate resin (A) having a relative viscosity of 1.30-2.00 and a terminal carboxyl group content of 10-80 equivalents/ton with 0.01-10pts.wt. metal salt of an alkyl sulfonic acid (B) of the formula (wherein R is a Cm alkyl group; R' is a Cn alkyl group; m>=2; n>=2; 6

    POLYESTER COMPOSITION
    110.
    发明专利

    公开(公告)号:JPS62167351A

    公开(公告)日:1987-07-23

    申请号:JP806386

    申请日:1986-01-20

    Abstract: PURPOSE:To obtain a polyester composition giving a molded article having excellent mechanical properties, especially high impact strength at or below room temperature and high elongation at break, by dispersing a specific modified olefin copolymer in an aromatic polyester in the form of particles. CONSTITUTION:The objective composition is composed of (A) 100pts.(wt.) of an aromatic polyester having a relative viscosity of 1.40-1.80 and (B) 1-180pts. of a modified olefin copolymer dispersed in the component A. The compound B has a melt index of 0.1-2.0 at 190 deg.C, a glass transition temperature of

Patent Agency Ranking