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. 09, 2026
Filed:
Aug. 31, 2020
Dow Silicones Corporation, Midland, MI (US);
Xiuyan Wang, Shanghai, CN;
Jiang Peng, Shanghai, CN;
Yi Guo, Shanghai, CN;
Qiang Hu, Shanghai, CN;
Michael H. Wang, Midland, MI (US);
DOW SILICONES CORPORATION, Midland, MI (US);
Abstract
A process for end-capping a dimethylsilanol terminated polydiorganosiloxane with one or more di, tri and/or tetra alkoxysilanes in the presence of a basic end-capping catalyst starting material is provided. An acidic stabilizing/neutralising agent is subsequently added. The acidic stabilizing/neutralising agent is selected from one or more fatty acids having from 8 to 26 carbons; an alkane sulphonic acid having from 1 to 10 carbons; acidic fumed silica and/or one or more acidic liquid polybutadienes or a mixture thereof. The resulting capped polymeric material may be utilized as a polymer in, e.g., an organopolysiloxane elastomer composition.