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:
May. 10, 2016
Filed:
May. 20, 2013
Samsung Fine Chemicals Co., Ltd., Ulsan, KR;
S-enpol Co., Ltd., Wonju-si, Gangwon-do, KR;
Gyung Don Kang, Daejeon, KR;
Ki Chull Yun, Cheonan-si, KR;
Sang Yob Kim, Goyang-si, KR;
Jung Ryum, Seoul, KR;
Boo Seong Kim, Seoul, KR;
Kil Seuk Byun, Yongin-si, KR;
Sei Hoon Kim, Wonju-si, KR;
Sung Bae Park, Incheon, KR;
LOTTE FINE CHEMICAL CO., LTD., , KR;
S-ENPOL CO., LTD., , KR;
Abstract
Provided is a method of continuous production of a biodegradable aliphatic polyester including continuously performing an esterification reaction of a mixture including an aliphatic dihydroxy compound and aliphatic dicarboxylic acid at a temperature of 185° C. or less to obtain an ester; continuously performing a first polycondensation reaction of the ester to obtain a preliminary polymer; and continuously performing a polycondensation reaction of the preliminary polymer. According to the method of production, an amount of the aliphatic dihydroxy compound used decreases, which is a starting material, thereby decreasing the manufacturing cost of the biodegradable aliphatic polyester.