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:
Aug. 20, 2024
Filed:
Oct. 29, 2018
Applicant:
Pujing Chemical Industry Co., Ltd., Shanghai, CN;
Inventor:
Lei Feng, Shanghai, CN;
Assignee:
Pujing Chemical Industry Co., Ltd., Shanghai, CN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G 18/42 (2006.01); B29C 45/00 (2006.01); B29K 67/00 (2006.01); C07C 31/22 (2006.01); C07C 31/24 (2006.01); C08G 18/73 (2006.01); C08G 18/79 (2006.01); C08G 63/06 (2006.01); C08G 63/685 (2006.01); C08G 63/82 (2006.01); C08G 63/91 (2006.01);
U.S. Cl.
CPC ...
C08G 18/4266 (2013.01); B29C 45/0001 (2013.01); C07C 31/22 (2013.01); C07C 31/24 (2013.01); C08G 18/73 (2013.01); C08G 18/797 (2013.01); C08G 63/06 (2013.01); C08G 63/6852 (2013.01); C08G 63/823 (2013.01); C08G 63/912 (2013.01); B29K 2067/04 (2013.01); Y02W 90/10 (2015.05);
Abstract
Disclosed is a branched polymer resin comprising repeating units of —(—OCH2-CO—)— or —(—CO—CH2O—)—, which is produced by ring-opening polymerization in the presence of structure regulators and optionally end-capping agents. The branched polymer resin exhibits a lower melt viscosity and a higher heat-stable temperature and suitable for melt processing.