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:
Jun. 10, 2008
Filed:
Mar. 22, 2004
Takashi Saito, Chiba, JP;
Masayoshi Isozaki, Chiba, JP;
Hideki Andoh, Chiba, JP;
Nippon Steel Chemical Co., Ltd., Tokyo, JP;
Abstract
This invention relates to a silicone resin composition which exhibits high heat resistance, high transparency and high dimensional stability and thus can be suitably used for optical applications such as a lens, an optical disc, an optical fiber, a substrate for a plat panel display, a window material for an automobile, and the like. A silicone resin composition, which comprises a silicone resin comprising, as a primary component, a polyorganosilsesquioxane being represented by the formula: [RSiO], wherein R represents an organic functional group having a (meth)acryloyl group, and n is 8, 10 or 12, and having a cage type structure in its structural unit, and an unsaturated compound having, in its molecule, at least one unsaturated group represented by —R—CR═CHor —CR═CH, wherein Rrepresents an alkylene group, an alkylidene group or a —OCO— group and Rrepresents a hydrogen atom or an alkyl group, and being capable of radically copolymerizing with the above silicone resin, in a weight proportion of 1:99 to 99:1.