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. 27, 2017
Filed:
Mar. 31, 2015
Kaneka Corporation, Osaka, JP;
Yoshitaka Nishiyama, Settsu, JP;
Hiroyuki Tanaka, Settsu, JP;
Satoshi Sugiyama, Settsu, JP;
Takao Manabe, Settsu, JP;
KANEKA CORPORATION, Osaka, JP;
Abstract
The present invention aims to provide a polysiloxane composition which exhibits high heat and light resistance, and excellent gas-barrier properties. The polysiloxane composition of the present invention includes: (A) a modified polyhedral polysiloxane which is obtained by modifying (a) an alkenyl group-containing polyhedral polysiloxane compound with (b) a hydrosilyl group-containing compound; and (B) an organopolysiloxane containing at least two alkenyl groups in a molecule, wherein the polysiloxane composition after curing has a water vapor permeability of not more than 30 g/m/24 h, and the polysiloxane composition includes (B1) an aryl group-containing organopolysiloxane as the organopolysiloxane (B), and/or (C) a component which is (C1) an organosilicon compound that contains one alkenyl or hydrosilyl group in a molecule, or (C2) a cyclic olefin compound that contains one carbon-carbon double bond in a molecule.