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:
Dec. 15, 2020
Filed:
Apr. 07, 2017
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Nobu Kato, Annaka, JP;
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Abstract
Provided is an addition-curable liquid silicone rubber composition which has good curability and still provides a silicone rubber having a durometer type A hardness of 5-15 as measured after being cured and a high tear strength. The addition-curable liquid silicone rubber composition contains (A) an alkenyl group-containing organopolysiloxane having two or more silicon atom-bonded alkenyl groups per molecule, and an average polymerization degree of 1,500 or less, and is liquid at 25° C., (B) (B-1) an organohydrogenpolysiloxane containing six or more silicon atom-bonded hydrogen atoms per molecule, and not having an aromatic group, (B-2) an organohydrogenpolysiloxane containing 3-5 silicon atom-bonded hydrogen atoms per molecule, and not having an aromatic group, (B-3) an organohydrogenpolysiloxane containing 1 or 2 silicon atom-bonded hydrogen atoms per molecule, and not having an aromatic group, (C) a fumed silica having a BET specific surface area of 130 m/g or more, and (D) an addition reaction catalyst.