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:
Jun. 22, 2010
Filed:
Mar. 03, 2005
Applicant:
Kazuyuki Kawabe, Saitama, JP;
Inventor:
Kazuyuki Kawabe, Saitama, JP;
Assignees:
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Polatechno Co., Ltd., Joetsu-Shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 23/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A water-based adhesive for polarizing elements which comprises a polyvinyl alcohol resin, a resin having a maleic anhydride skeleton in the structure, and a crosslinking agent in a weight proportion of 100/(1-1,000)/(0.5-5,000). It is easy to handle because it is of the water-based one-pack type. The adhesive has sufficient adhesion strength even in a high-temperature high-humidity atmosphere. The adhesive contains boron in a high concentration and is effective also in the bonding of polarizing elements, for which conventional adhesives have been insufficient in adhesion strength.