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:
Jul. 03, 2012
Filed:
Mar. 30, 2009
Shinji Irifune, Annaka, JP;
Akinari Itagaki, Annaka, JP;
Shinji Irifune, Annaka, JP;
Akinari Itagaki, Annaka, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
An ultraviolet-curable silicone composition for a release paper including (A) 100 parts by mass of a specific organopolysiloxane having a polymerization degree of 8 to 20 and containing one epoxy group, and (C) an effective quantity of an onium salt photoinitiator. In a preferred embodiment, the composition further includes (B) 10 to 1,000 parts by mass of at least one specific organopolysiloxane containing a plurality of epoxy groups. In another preferred embodiment, the composition has a viscosity of not more than 100 mPa·s. The composition has a peel strength that exhibits a positive dependency on the peel speed when peeled from a hot-melt pressure-sensitive adhesive, and can therefore be used to produce a release paper capable of reducing peeling noise. Further, because the composition has a low viscosity, it exhibits excellent wetting of substrates having significant unevenness, even in a solventless form.