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:
Jul. 14, 2009
Filed:
Dec. 10, 2001
Katsuya Ouchi, Settsu, JP;
Manabu Tsumura, Settsu, JP;
Michinori Tsukamoto, Ibaraki, JP;
Harumi Sakamoto, Settsu, JP;
Kazunori Yokoyama, Settsu, JP;
Katsuya Ouchi, Settsu, JP;
Manabu Tsumura, Settsu, JP;
Michinori Tsukamoto, Ibaraki, JP;
Harumi Sakamoto, Settsu, JP;
Kazunori Yokoyama, Settsu, JP;
Kaneka Corporation, Osaka-Shi, JP;
Abstract
The invention aims at a curing agent, curable compositions or compositions for optical materials, capable of providing for cured artifacts having laudable heat resistance, optical transparency, and light resistance; optical materials and methods for their production; and liquid crystal displays and LED's made by using the materials. A curing agent, which comprises at least two SiH groups, is obtainable by subjecting an aliphatic organic compound (α1) and an acyclic and/or cyclic polyorganosiloxane (β1) to hydrosilylation reaction. The curing agent is also obtainable by subjecting an organic compound (α2) and a cyclic polyorganosiloxane (β2) to hydrosilylation reaction.