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:
Jul. 07, 2015
Filed:
Dec. 04, 2013
Lg Chem Ltd., Seoul, KR;
Jung-Min Sohn, Daejeon, KR;
Seung Young Park, Daejeon, KR;
Sung-Cheol Yoon, Daejeon, KR;
Do-Yong Shim, Bucheon-si, KR;
LG CHEM, LTD., Seoul, KR;
Abstract
The present invention relates to a packaging film including a lactide copolymer having no problem of pollution or toxicity while having good flexibility in addition to excellent properties such as mechanical properties, transparency, and processability, and preferably being applicable to food packaging. The packaging film includes a lactide copolymer including two or more specific block copolymerized repeating units that the hard segments of polylactide repeating units are connected to both ends of the soft segments of polyether polyol repeating unit, wherein the block copolymerized repeating units are connected to each other through the intermediation of urethane connecting groups derived from polyvalent isocyanate compound of which the average equivalent of isocyanate group per a molecule is more than 2 and less than 3.