logo

For the Inventor, By the Inventor

The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 4983660 B1

PDFFull Text
Date of Patent:
Jan. 08, 1991

Filed:

Dec. 23, 1988

Polyethylene terephthalate resin composition

Applicant:
Inventors:

Tomohiko Yoshida, Toyohashi, JP;

Ryoji Handa, Toyohashi, JP;

Noriyuki Tajiri, Toyohashi, JP;

Hitochi Iwasaki, Toyohashi, JP;

Mituto Yoshihiro, Yokohama, JP;

Assignee:

Mitsubishi Rayon Company Ltd., Tokyo, JP;

Attorney:

Finnegan, Henderson, Farabow, Garrett & Dunner

Primary Examiner:

Lewis T Jacobs

Int. Cl.
CPC ...
C08L / ; C08K / ; C08K / ;
U.S. Cl.
CPC ...
524369 ; 524372 ; 524375 ; 524410 ; 524425 ; 524451 ; 524456 ; 524505 ; 524513 ; 524605 ;
Abstract

A highly crystalline polyethylene terephthalate resin composition comprising (A) 100 parts by weight of a polyethylene terephthalate copolymer comprising ethylene terephthalate units as the main recurring units, which is formed by copolymerizing a glycol component containing 1 to 20% by weight of a polyalkylene glycol having an average molecular weight of 500 to 20,000 and 1.2 to 15% by weight of diethylene glycol with a carboxylic acid component composed mainly of terephthalic acid, (B) 5 to 200 parts by weight of a fibrous reinforcer, (C) 0.5 to 130 parts by weight of a nucleating agent, and (D) 0.1 to 60 parts by weight of a crystallization-promoting agent. The resin composition optionally contains 2 to 100 parts by weight of an inorganic compound, 2 to 100 parts by weight of an impact strength improver, 2 to 40 parts by weight of a flame retardant, or 1 to 20 parts by weight of a flame retardant assistant. The resin composition has an improved impact strength, a high heat distortion temperature, and an excellent moldability, and gives a molded article having a good surface appearance even when molding is carried out at a low mold temperature.

Find Patent Forward Citations

Yoshida, Tomohiko. (1991). Polyethylene terephthalate resin composition (U.S. Patent No. 4983660). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4983660

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…