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:
Oct. 07, 2008
Filed:
Aug. 30, 2006
Akio Iwama, Otsu, JP;
Akio Iwama, Otsu, JP;
Lintec Corporation, Tokyo, JP;
PIAC Co., Ltd., Shiga, JP;
Abstract
A medical pressure-sensitive adhesive composition having excellent re-adhesion property, and also excellence in both the peel adhesion property and the low skin stimulus property, a process for producing the same, and a medical tape are provided. In the medical tape, a medical pressure-sensitive adhesive composition containing acrylic polymer and acrylic oligomer is laminated on a substrate, wherein the medical pressure-sensitive adhesive composition is prepared by cross-linking an intermediate composition containing an acrylic polymer having a cross-linkable functional group and an acrylic oligomer containing 10 to 40 percent by mole of vinyl monomer with a lactam ring through the use of a cross-linking agent, and wherein this medical tape is made by compounding the acrylic oligomer in the range of 50 to 700 parts by weight relative to 100 parts by weight of acrylic polymer, while the number average molecular weight of the acrylic polymer is set at a value within the range of 300,000 to 1,500,000, and the number average molecular weight of the acrylic oligomer is set at a value within the range of 1,000 to 10,000.