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:
Jun. 08, 2021
Filed:
Jul. 03, 2019
Applicants:
Dow Silicones Corporation, Midland, MI (US);
Dow Global Technologies Llc, Midland, MI (US);
Inventors:
Matthew Belowich, Midland, MI (US);
Mark Rickard, Midland, MI (US);
Vladimir Pushkarev, Mount Pleasant, MI (US);
Shaungbing Han, Midland, MI (US);
Evelyn Auyeung, Houston, TX (US);
John Roberts, Midland, MI (US);
Thomas Peterson, Midland, MI (US);
Assignees:
Dow Silicones Corporation, Midland, MI (US);
Dow Global Technologies LLC, Midland, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G 77/08 (2006.01);
U.S. Cl.
CPC ...
C08G 77/08 (2013.01);
Abstract
A method for making long chain hydroxyl terminated polydiorganosiloxanes with low cyclics content via condensation polymerization employs a trifluoromethane sulfonate compound catalyst. The trifluoromethane sulfonate may be complexed with a multidentate ligand.