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:
Sep. 04, 2012
Filed:
Oct. 14, 2009
Toshihide Suzuki, Ibaraki, JP;
Kenichi Yamamoto, Ibaraki, JP;
Yutaka Tosaki, Ibaraki, JP;
Akiko Takahashi, Ibaraki, JP;
Toshihide Suzuki, Ibaraki, JP;
Kenichi Yamamoto, Ibaraki, JP;
Yutaka Tosaki, Ibaraki, JP;
Akiko Takahashi, Ibaraki, JP;
Nitto Denko Corporation, Ibaraki-shi, JP;
Abstract
The present invention provides a water-dispersed acrylic PSA composition suitable for forming a PSA sheet. The PSA composition contains 0.5 to 15 parts by weight of an acrylic copolymer (polymer H) with a Tg of 30° C. to 120° C. in relation to 100 parts by weight of an acrylic copolymer (polymer L) with a Tg of −70° C. to −50° C. The polymer L is obtained by polymerization of a monomer starting material comprising 60 wt % or more of an alkyl (meth)acrylate with a C-Calkyl group; and 0.5 to 10 wt % of a radical polymerizable monomer with a carboxyl group.