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. 06, 2016
Filed:
Mar. 21, 2012
Yumiko Amino, Tokyo, JP;
Kazue Uemura, Tokyo, JP;
Yoshitomo Ono, Tokyo, JP;
LINTEC CORPORATION, Tokyo, JP;
Abstract
A pressure-sensitive adhesive composition containing a pressure-sensitive adhesive that contains from 40 to 95% by mass of a rubber-based resin not containing a styrene-derived constituent unit, and a photochromic dye of a dithienylethene-based compound, wherein the content of the photochromic dye is from 0.40 to 8.00 parts by mass relative to 100 parts by mass of the pressure-sensitive adhesive, and a pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer formed of the pressure-sensitive adhesive composition have excellent weather resistance that can withstand long-term use, a relatively rapid rate of color change from colored to colorless, and excellent peelability to release sheets.