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:
Jan. 05, 2016
Filed:
Dec. 20, 2012
Lintec Corporation, Tokyo, JP;
Keiichi Sato, Tokyo, JP;
Tomomi Fukaya, Tokyo, JP;
LINTEC CORPORATION, Tokyo, JP;
Abstract
A release sheet comprising a base material and a release agent layer formed on at least one surface of the base material, wherein: the release agent layer is formed by using a release agent composition; the release agent composition contains a first polydimethylsiloxane having at least two alkenyl groups in one molecule and a second polydimethylsiloxane having at least two hydrosilyl groups in one molecule; the release agent composition contains 10.00 to 16.00 mmol of the alkenyl groups and 40.00 to 145.00 mmol of the hydrosilyl groups in a total of 30 g of the first polydimethylsiloxane and the second polydimethylsiloxane; and a molar ratio (b/a) of the hydrosilyl groups (b) to the alkenyl groups (a) is 2.0 to 15.0. According to the release sheet, it is possible to suppress the peeling force from increasing even when the release agent layer of the release sheet is exposed to the air for a long time.