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. 18, 2014
Filed:
Oct. 31, 2011
Chae Hwan Hong, Gyeonggi-do, KR;
DO Suck Han, Gyeonggi-do, KR;
Soo Hyun Kim, Seoul, KR;
Young Mee Jung, Seoul, KR;
Chae Hwan Hong, Gyeonggi-do, KR;
Do Suck Han, Gyeonggi-do, KR;
Soo Hyun Kim, Seoul, KR;
Young Mee Jung, Seoul, KR;
Hyundai Motor Company, Seoul, KR;
Korea Institute of Science and Technology, Seoul, KR;
Abstract
Disclosed are a polylactide stereocomplex with improved thermal stability and thus improved processability and a method for preparing the same. In order to confer flexibility to polymer chains,-type polylactide polymer containing a small amount of caprolactone (poly-lactide-caprolactone copolymer) is synthesized and it is uniformly mixed with-type single-phase polylactide to prepare a flexible polylactide stereocomplex. Since the polylactide stereocomplex having flexible polymer chains has superior heat resistance and mechanical stability and experiences little decrease of the degree of stereocomplex formation even after thermal processing, the polylactide stereocomplex having improved thermal stability can be advantageously used for engineering plastics requiring high strength and good thermal stability, alternative materials for general-use plastics, high-performance medical materials, or the like because of its remarkably improved processability.