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:
Oct. 14, 2014
Filed:
Jan. 29, 2010
Chiichiro Hasegawa, Awara, JP;
Makoto Yoshitake, Funabashi, JP;
Hiroshi Akitomo, Ichihara, JP;
Dow Corning Toray Co., Ltd., Chiyado-Ku, Tokyo, JP;
Abstract
A curable silicone composition comprises (A) (A-1) a dialkylpolysiloxane that has at least two alkenyl groups in each molecule and a viscosity of at least 1,000 mPa·s to not more than 50,000 mPa·s and (A-2) an alkenyl-containing, resin-form organopolysiloxane that comprises the SiOunit, RRSiOunit, and RSiOunit wherein Ris alkyl and Ris alkenyl and that contains the alkenyl group in the range from at least 0.5 mass % to less than 3.5 mass %; (B) an organopolysiloxane that has at least three silicon-bonded hydrogen atoms; and (C) a hydrosilylation reaction catalyst. The curable composition provides a highly transparent cured silicone material that has a hardness in the range from at least 30 to not more than 80, a parallel light transmittance at 25° C. of at least 90%, and a parallel light transmittance at 200° C. that is at least 99% of the parallel light transmittance at 25° C.