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:
Nov. 13, 2007
Filed:
Sep. 17, 2004
Tomoyuki Goto, Annaka, JP;
Eiichi Tabei, Annaka, JP;
Akira Yamamoto, Jyoetsu, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
A curable silicone resin composition is provided. It includes (A) an aromatic ring-containing hydrocarbon compound containing at least 2 silicon-bonded hydrogen atoms, in which the silicon atoms are bonded to the hydrocarbon skeleton; (B) an organopolysiloxane with a branched or three dimensional network structure, and with a viscosity at 25° C. of at least 1,000 mPa·s, having an average composition formula (1):RSiO  (1)wherein, Rindependently represent a substituted or unsubstituted monovalent hydrocarbon group, a substituted or unsubstituted hydrocarbyloxy group, or a hydroxyl group, provided from 0.1 to 80 mol % of all the Rgroups are alkenyl groups, and x represents a positive number that satisfies 1≦x<2; and (C) a hydrosilylation reaction catalyst. The composition yields a cured product that is transparent and displays excellent hardness and flexural strength.