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:
Apr. 19, 2005
Filed:
Dec. 22, 2000
Tomoo Yamaguchi, Osaka, JP;
Yasunobu Ina, Osaka, JP;
Isao Hirose, Osaka, JP;
Kunihiko Kaita, Osaka, JP;
Shuzo Fujiwara, Osaka, JP;
Tomoo Yamaguchi, Osaka, JP;
Yasunobu Ina, Osaka, JP;
Isao Hirose, Osaka, JP;
Kunihiko Kaita, Osaka, JP;
Shuzo Fujiwara, Osaka, JP;
Nitto Denko Corporation, Osaka, JP;
Abstract
A solid type pressure-sensitive adhesive composition containing a rubbery polymer as the main polymer; and pressure-sensitive adhesive sheets which use the pressure-sensitive adhesive composition, are excellent in adhesive strength and holding power, retain the intact holding power even when allowed to stand at high temperatures or made to have a reduced adhesive layer thickness, and are free from the problem of adhesive protrusion or adhesive remaining. The pressure-sensitive adhesive sheets comprise a substrate and formed thereon a layer comprising a solid type pressure-sensitive adhesive composition obtained by a method comprising adding a tackifier to a rubbery polymer and treating the resultant mixture with an isocyanate crosslinking agent to crosslink the polymer.