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:
Nov. 22, 2016
Filed:
Nov. 02, 2011
Young-man Yoo, Seoul, KR;
Tae-woong Lee, Gyeonggi-do, KR;
Kye-yune Lee, Gyeonggi-do, KR;
Jae-il Chung, Gyeonggi-do, KR;
Young-Man Yoo, Seoul, KR;
Tae-Woong Lee, Gyeonggi-do, KR;
Kye-Yune Lee, Gyeonggi-do, KR;
Jae-Il Chung, Gyeonggi-do, KR;
Other;
Abstract
The present invention relates to a polylactic acid resin and a packaging film comprising the same, wherein the polylactic acid resin is useful as a packaging material due to excellent properties including heat resistance as well as optimized flexibility. The polylactic acid resin comprises: a hard segment including a predetermined polylactic acid repeating unit; and a soft segment including a polyurethane polyol repeating unit in which certain polyether-based polyol repeating units are linearly connected in a medium of a urethane bond. In addition, the polylactic acid resin has a glass transition temperature (Tg) of 25-55° C.