Polyester resin composition

• US 4,189,549 A
• Filed: 06/29/1977
• Issued: 02/19/1980
• Est. Priority Date: 06/30/1976
• Status: Expired due to Term

• Current Assignee: Sumitomo Chemical Company Limited
• Original Assignee: Sumitomo Chemical Company Limited
• Inventors: Saito, Teruo, Uemura, Yukikazu, Ishida, Hiroshi, Matsunaga, Hiroomi
• Primary Examiner(s): Lieberman, Allan
• Application Number:
  US05/811,327
• Time in Patent Office: 965 Days
• Field of Search: 260/860, 260/47 C, 528/196
• US Class Current: 525/439
• CPC Class Codes: C08L 67/00 Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain of polyester-amides C08L77/12; of polyester-imides C08L79/08; Compositions of derivatives of such polymers
• CPC Class Codes: C08L 67/04 Polyesters derived from hydroxycarboxylic acids, e.g. lactones C08L67/06 takes precedence
• CPC Class Codes: C08L 69/00 Compositions of polycarbonates; Compositions of derivatives of polycarbonates

Abstract

A polyester resin composition having excellent mechanical properties, processability, transparency and surface glossiness of the formed product thereof, which comprises 1 to 99% by weight of an aromatic polyester produced by polycondensing para-hydroxybenzoic acid or a functional derivative thereof (I), 2,2-bis(4'"'"'-hydroxyphenyl)propane or a functional derivative thereof (II), and terephthalic acid or a functional derivative thereof (III) and/or isophthalic acid or a functional derivative thereof (IV) in a molar ratio of (I):(II)=1:100 to 100:1 and (II):(III) and/or (IV)=1:10 to 10:1 and 99 to 1% by weight of a polycarbonate or an aliphatic polyester.

Claims

1. A polyester resin composition comprising 1 to 99% by weight of an aromatic polyesyter produced by polycondensing para-hydroxybenzoic acid or a functional derivative thereof (I), 2,2-bis(4'"'"'-hydroxyphenyl)propane or a functional derivative thereof (II), a terephthalic acid or a functional derivative thereof (III) and/or isophthalic acid or a functional derivative thereof (IV) in a molar ratio of (I):

(II)=1;

100 to 100;

1 and (II);

(III) and/or (IV)=1;

10 to 10;

1, and

99 to 1% by weight of a 4,4-dihydroxydiarylalkane polycarbonate having an average molecular weight of 5,000 to 100,000 or a polyalkylene phenylene ester and/or a polyalkylene phenylene ester ether, said polyalkylene phenylene ester and polyalkylene phenylene ester ether having the following formula;

##STR4## wherein R₁, R₂, R₃ and R₄ are the same or different and are each hydrogen, an alkyl having 1 to 6 carbon atoms, a halogen, an alkoxy having 1 to 6 carbon atoms, an alkoxycarbonyl having 2 to 6 carbon atoms, cyano, amino, sulfonyl, nitro or phenoxy;

X is a divalent aliphatic hydrocarbon group having 1 to 10 carbon atoms;

Y is --COO-- or --O--; and

n is 30 to 500.

2. The polyester resin composition according to claim 1, wherein the aromatic polyester is contained therein in the amount of 10 to 95% by weight on the basis of the total weight of the composition.