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:
Dec. 03, 2019
Filed:
May. 13, 2016
Applicant:
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Inventors:
Ayumu Kiyomori, Joetsu, JP;
Yusuke Itoh, Joetsu, JP;
Assignee:
SHIN-ETSU CHEMICAL CO., LTD., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08K 5/5419 (2006.01); C08F 283/12 (2006.01); C08F 2/48 (2006.01);
U.S. Cl.
CPC ...
C08K 5/5419 (2013.01);
Abstract
A photocurable composition comprising (a) a cyano-containing silsesquioxane, (b) a cyano-containing ethylenically unsaturated monofunctional monomer, (c) an ethylenically unsaturated polyfunctional monomer, and (d) a photo-polymerization initiator has a long shelf life under light-shielded conditions. A cured product obtained by curing the photocurable composition is a polymeric material which is transparent and lightweight and has a high dielectric constant.