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:
Apr. 14, 2020
Filed:
Mar. 23, 2017
Daicel Corporation, Osaka-shi, Osaka, JP;
Yasunobu Nakagawa, Ohtake, JP;
Shinya Yabuno, Ohtake, JP;
DAICEL CORPORATION, Osaka-shi, JP;
Abstract
An object of the present invention is to provide a curable resin composition for forming a less tacky cured product having excellent gas barrier properties, heat resistance, light resistance, flexibility and heat shock resistance. The curable resin composition comprises the following components (A), (B), (C), and (D), wherein a content of the component (C) is 0.3 to 20 wt %, based on the total amount of the composition: (A): a polyorganosiloxane represented by an average unit formula: (SiO)(RSiO)(RSiO)(RSiO), wherein each Ris alkyl, aryl, alkenyl, etc., and a percentage of the alkyl is 50 to 98 mol %, a percentage of the aryl is 1 to 50 mol %, and a percentage of the alkenyl is 1 to 35 mol %, based on the total amount of R, and a1>0, a2>0, a3≥0, a4>0, 0.5≤a1/a2≤10, and a1+a2+a3+a4=1;(B): a polyorganosiloxane represented by an average composition formula: RHSiOwherein Ris alkyl or aryl, and 0.7≤m≤2.1, 0.001≤n≤1.0, and 0.8≤m+n≤3;(C): a straight-chain polyorganosiloxane represented by a general formula (III-1): wherein Ris alkyl, and y is an integer of not less than 1 and not more than 100; and(D): a hydrosilylation catalyst.