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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 12091547 B1

PDFFull Text
Date of Patent:
Sep. 17, 2024

Filed:

Nov. 19, 2021

Silicone elastomer composition

Applicant:

Tesa SE, Norderstedt, DE;

Inventors:

Tobias Winkler, Hamburg, DE;

Christof-Gottfried Hoelger, Weil am Rhein, DE;

Paraskevi Christogianni, London, GB;

Thomas Dowden, London, GB;

Priti Ariscrisna, London, GB;

Elliot Allen, London, GB;

Mark Buckingham, Cambridge, GB;

Reya Shamsah, Edgware, GB;

Anna Blades, Surrey, GB;

Alice Dowden, London, GB;

Khai Duong Quang Nguyen, London, GB;

Julien Gautrot, Cambridge, GB;

Assignee:

tesa SE, Norderstedt, DE;

Attorney:

Price Heneveld LLP

Primary Examiner:

Robert S Jones, Jr

Assistant Examiner:

Jiangtian undefined Xu

Int. Cl.
CPC ...
C08L 83/04 (2006.01); C08G 77/08 (2006.01); C08G 77/20 (2006.01); C08K 3/26 (2006.01); C08K 3/36 (2006.01); C08K 5/5419 (2006.01); C08K 7/10 (2006.01); C08K 7/20 (2006.01); C08K 9/06 (2006.01);
U.S. Cl.
CPC ...
C08L 83/04 (2013.01); C08G 77/08 (2013.01); C08G 77/20 (2013.01); C08K 3/26 (2013.01); C08K 3/36 (2013.01); C08K 5/5419 (2013.01); C08K 7/10 (2013.01); C08K 7/20 (2013.01); C08K 9/06 (2013.01); C08K 2003/265 (2013.01);
Abstract

The present invention provides a tin-free, room temperature curable silicone elastomer composition, wherein the uncured composition is a putty. The silicone elastomer composition comprises a) an end-capped base polymer, wherein the base polymer comprises a polysiloxane or mixture of polysiloxanes, and wherein the end-capped base polymer comprises terminal di-(C)alkoxy silyl groups; b) at least one amorphous filler; c) 15.1 to 60 parts by weight of at least one spherical filler for each 100 parts by weight of base polymer; and d) a curing catalyst consisting of one or more selected from the group consisting of organic titanates and organic zirconates. The terminal dialkoxy silyl groups of the base polymer can be dimethoxy silyl groups. The at least one amorphous filler can be selected from the group consisting of fumed silica, fumed alumina, carbon black, precipitated silica, precipitated calcium carbonate, surface-treated calcium carbonate and mixtures thereof.

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