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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.:

US 12668666 B1

PDFFull Text
Date of Patent:
Jun. 30, 2026

Filed:

Dec. 10, 2020

Functionalized q-t-siloxane-based polymeric materials with low siloxane ring content and method for preparing same

Applicant:

Empa Eidgenossische Materialprufungsund Forschungsanstalt, Dubendorf, CH;

Inventors:

Matthias Koebel, Bruttisellen, CH;

Wim Malfait, Zurich, CH;

Marek Nemec, Poprad, SK;

Stefanie Hauser, Nafels, CH;

Assignee:

EMPA EIDGENOSSISCHE MATERIALPRUFUNGSUND FORSCHUNGSANSTALT, Dubendorf, CH;

Attorneys:

Bryan D. Zerhusen, Esq.

Nicholas R. Herrel, Esq.

CANTOR COLBURN LLP

Primary Examiner:

Margaret G Moore

Int. Cl.
CPC ...
C08G 77/18 (2006.01); C08G 77/00 (2006.01); C08G 77/08 (2006.01); C08G 77/26 (2006.01); C08G 77/28 (2006.01); C08G 77/30 (2006.01); C08G 77/388 (2006.01); C08G 77/392 (2006.01); C08G 83/00 (2006.01); C08L 63/00 (2006.01); C08L 83/04 (2006.01); C08L 83/06 (2006.01); C08L 83/08 (2006.01); C09D 183/06 (2006.01); C09D 183/08 (2006.01); C09J 183/06 (2006.01); C09J 183/08 (2006.01);
U.S. Cl.
CPC ...
C08G 77/18 (2013.01); C08G 77/08 (2013.01); C08G 77/26 (2013.01); C08G 77/28 (2013.01); C08G 77/30 (2013.01); C08G 77/388 (2013.01); C08G 77/392 (2013.01); C08G 77/70 (2013.01); C08G 83/005 (2013.01); C08L 63/00 (2013.01); C08L 83/04 (2013.01); C08L 83/06 (2013.01); C08L 83/08 (2013.01); C09D 183/06 (2013.01); C09D 183/08 (2013.01); C09J 183/06 (2013.01); C09J 183/08 (2013.01);
Abstract

The present invention pertains to a functionalized polymeric liquid polysiloxane material comprising non-organofunctional Q-type siloxane moieties and mono-organofunctional T-type siloxane moieties, as well as optionally tri-organofunctional M-type siloxane moieties and/or di-organofunctional D-type siloxane moieties characterized in that the polysiloxane material has a specified degree of polymerization, comprises a limited low amount of four-membered Q2-type and/or Q3-type siloxane ring species relative to the total Q-type siloxane species, and is functionalized at specific moieties. The present invention further pertains to methods for producing the polymeric liquid polysiloxane material as well as associated uses of the material.

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