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:
May. 24, 2022
Filed:
Jul. 30, 2019
Dow Silicones Corporation, Midland, MI (US);
Dow Global Technologies Llc, Midland, MI (US);
Adam H. Broderick, Midland, MI (US);
Douglas A. Brune, Midland, MI (US);
Jarred Cramton, Midland, MI (US);
Mark D. Fisher, Midland, MI (US);
Jody J. Henning, Midland, MI (US);
Mark F. Sonnenschein, Midland, MI (US);
Kai Su, Midland, MI (US);
Benjamin L. Wendt, Midland, MI (US);
DOW SILICONES CORPORATION, Midland, MI (US);
DOW GLOBAL TECHNOLOGIES LLC, Midland, MI (US);
Abstract
A composition for forming a foamed silicone elastomer is disclosed. The composition comprises: A) an organopolysiloxane having at least two silicon-bonded ethylenically unsaturated groups per molecule; B) an organohydrogensiloxane having at least two silicon-bonded hydrogen atoms per molecule; C) a hydrosilylation catalyst; D) a chemical blowing agent; and E) a physical blowing agent. The hydrosilylation catalyst C) is present in a catalytically effective amount. The chemical blowing agent D) has at least one hydroxyl (OH) group, and is present in an amount to provide a OH content >0 and <500 parts per million (ppm). The physical blowing agent E) undergoes a phase change from a liquid to a gaseous state during exposure to atmospheric pressure and a temperature ≥0° C. The blowing agents D) and E) are different from one another. A foamed silicone elastomer, and methods of forming the composition and foamed silicone elastomer are also disclosed.