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. 07, 2014
Filed:
Jan. 29, 2010
Chiichiro Hasegawa, Awara, JP;
Makoto Yoshitake, Funabashi, JP;
Hiroshi Akitomo, Ichihara, JP;
Dow Corning Toray Co., Ltd., Chiyoda-Ku, Tokyo, JP;
Abstract
A curable silicone composition comprises (A) (A-1) an alkenyl-containing dialkylpolysiloxane and a viscosity of at least 1,000 mPa·s to not more than 20,000 mPa·s and (A-2) an alkenyl-containing, resin-form organopolysiloxane that comprises the SiOunit, RRSiOunit, and RSiOunit wherein Ris alkyl and Ris alkenyl, that contains from 2.5 to 5.0 mass % alkenyl group, and that has a ratio for the total number of moles of RRSiOand RSiOunits to 1 mole of the SiOunit in the range from 0.70 to 1.10; (B) an organopolysiloxane that contains at least 0.9 mass % silicon-bonded hydrogen; and (C) a hydrosilylation reaction catalyst. The curable composition provides a bending-tolerant and highly transparent cured silicone material that has a hardness in the range from 80 to 95, and a parallel light transmittance at 200° C. of a value that is at least 99% of the parallel light transmittance at 25° C.