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.:
Date of Patent:
Jan. 25, 2000
Filed:
Sep. 27, 1994
Tadayuki Ohmae, Chiba, JP;
Yoshiki Toyoshima, Chiba, JP;
Kentaro Mashita, Chiba, JP;
Noboru Yamaguchi, Chiba, JP;
Kenzo Chikanari, Chiba, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
A saturated polyester resin composition excellent in impact resistance is prepared by melt kneading (A) 30-58 parts by weight of a saturated polyester resin, (B) 42-70 parts by weight of an epoxy group-containing ethylene copolymer comprising (a) 50-99% by weight of ethylene unit, (b) 0.1-30% by weight of unsaturated carboxylic acid glycidyl ester unit or unsaturated glycidyl ether unit, and (c) 0-49% by weight of ethylenically unsaturated ester compound unit, (C) 0.01-20 parts by weight of a polyfunctional compound containing at least two specific functional groups of amino groups, carboxyl groups, carboxylic acid anhydride groups, hydroxyl groups or ##STR1## unit (wherein X and Y are both oxygen atoms or sulfur atoms or one of them is an oxygen atom and another is a sulfur atom) and (D) 0-30 parts by weight of a block copolyether ester elastomer, the amounts of (C) and (D) being based on 100 parts by weight of (A) plus (B), thereby to obtain a former-stage composition (I) and furthermore melt kneading the resulting composition (I) with (E) 50-1000 parts by weight of a saturated polyester resin and (F) 0-30 parts by weight of a block copolyether ester elastomer at a later-stage.