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:
Feb. 04, 2020
Filed:
Dec. 13, 2016
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Hatsuhiko Hattori, Annaka, JP;
Yoshinori Yoneda, Tokyo, JP;
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Abstract
A solvent-free silicone-modified polyimide resin composition having fluidity and including no solvent, the composition containing (A) a silicone-modified polyimide resin of formula (1),Ee-Ff-Gg  (1)(E is formula (2), F is formula (3), and G is a diamine-derived divalent residue; f+e+g=100 mol %, the molar ratio of f/(e+g) is 0.8-1.2) (Ris a divalent hydrocarbon group, R-Rare monovalent hydrocarbon groups, Rand Rare an alkyl group, aryl group, or aralkyl group; m, n, and o are 0-20, n+o≥1, m+n+o=1-60)-Im-X-Im-  (3)(Im is a cyclic group including a cyclic imide structure, X is a single bond, oxygen, sulfur, sulfide group, sulfone group, carbonyl group, —NR—, —CR—, R—, —R(OR)—, alkylene group, trivalent group having one H eliminated from said group, or arylene-alkylene group),(B) a polymerizable compound,(C) a polymerization initiator, and(D) hydrophobic fumed silica. This composition has excellent handleability due to its fluidity and thixotropy.