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. 26, 2022
Filed:
Jun. 25, 2018
Applicant:
SK Chemicals Co., Ltd., Gyeonggi-do, KR;
Inventors:
Assignee:
SK Chemicals Co., Ltd., Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 63/672 (2006.01); C08J 5/18 (2006.01); C08K 5/098 (2006.01); B32B 27/08 (2006.01); B29C 48/00 (2019.01); B29C 48/08 (2019.01); B29C 55/14 (2006.01); B32B 27/36 (2006.01); B29K 67/00 (2006.01);
U.S. Cl.
CPC ...
C08G 63/672 (2013.01); B29C 48/0018 (2019.02); B29C 48/08 (2019.02); B29C 55/143 (2013.01); B32B 27/08 (2013.01); B32B 27/36 (2013.01); C08J 5/18 (2013.01); C08K 5/098 (2013.01); B29K 2067/003 (2013.01); B29K 2995/0041 (2013.01); B29K 2995/0053 (2013.01); C08J 2367/02 (2013.01);
Abstract
The present invention relates to a polyester film and a preparation method thereof. The polyester film is formed of a polyester resin having a specific content of isosorbide and diethylene glycol introduced therein, containing a low content of oligomer, and exhibiting a specific intrinsic viscosity, thereby exhibiting excellent mechanical properties, heat resistance and chemical resistance, and good heat sealability.