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:
Oct. 07, 2014
Filed:
Dec. 31, 2008
Applicants:
Bong OH Kim, Daejeon, KR;
Myung Seob Shim, Seoul, KR;
Min-hyo Seo, Daejeon, KR;
Inventors:
Assignee:
Samyang Biopharmaceuticals Corporation, Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08C 1/14 (2006.01); C08G 63/664 (2006.01); C08G 63/90 (2006.01);
U.S. Cl.
CPC ...
C08G 63/90 (2013.01); C08G 63/664 (2013.01); C08G 2261/126 (2013.01);
Abstract
Disclosed are a highly pure amphiphilic block copolymer including a hydrophobic polymer block of a poly(α-hydroxy acid), and a method for preparing the same. The method for preparing a highly pure amphiphilic block copolymer including a hydrophobic polymer block of a poly(α-hydroxy acid) includes removing α-hydroxy acid, lactone monomers thereof, oligomers thereof and an organometal catalyst in polymerizing the amphiphilic block copolymer.