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:
Feb. 06, 1990
Filed:
Jul. 06, 1989
Applicant:
Inventors:
Assignee:
Takemoto Yushi Kabushiki Kaisha, Aichi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
558416 ; 558302 ; 558399 ; 558406 ; 558414 ; 558442 ; 560 88 ; 560 90 ; 560 91 ; 560196 ; 560198 ; 560199 ;
Abstract
An additive for synthetic resins contains a block copolymer having as its constituent segments both polyester block obtainable by ring-opening polymerization of .epsilon.-aliphatic lactone and polydiene block. One or more of these polyester blocks are connected to the polydiene block through ester bond and at least one of these polyester blocks has at its end a reactive group such as vinyl group, epoxy group, isocyanate group or carboxyl group.