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:
Jun. 11, 2013
Filed:
Feb. 27, 2009
Applicants:
Takashi Sawaguchi, Tokyo, JP;
Daisuke Sasaki, Saitama, JP;
Inventors:
Takashi Sawaguchi, Tokyo, JP;
Daisuke Sasaki, Saitama, JP;
Assignee:
San-Ei Kougyou Corporation, Saitama, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08G 59/32 (2006.01);
U.S. Cl.
CPC ...
Abstract
This invention provides a triblock copolymer useful as a compatibilizer for biodegradable polymers, such as polylactic acid, and general-purpose polymers. Namely, this is a triblock copolymer represented by the below general formula (i), wherein each Ris independently selected from the group consisting of H, —CH, —CH, and —CHCH(CH), n is an integer of 10 to 1000, and A represents a polyester block obtained by subjecting one or more cyclic esters selected from the group consisting of lactides, glycolides and lactones, to ring-opening polymerization.