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:
Jul. 09, 2002
Filed:
Mar. 14, 1997
Jesse C. Ercillo, Covina, CA (US);
Roger H. Mann, Corona Del Mar, CA (US);
Karl Josephy, Los Angeles, CA (US);
Luigi Sartor, Pasadena, CA (US);
Yukihiko Sasaki, Claremont, CA (US);
Henk De Koning, Zevenhuizen, NL;
Eng-Pi Chang, Arcadia, CA (US);
Avery Dennison Corporation, Pasadena, CA (US);
Abstract
The present invention is directed toward multilayer pressure-sensitive adhesive constructions with improved convertibility and aging. In one embodiment, the multilayer constructions have one layer formed of a first adhesive composition having a first glass transition temperature, and also having a tangent delta greater than about 0.5 at 10 radians per second at 20° C., and a storage modulus greater than about 3×10 dynes/cm at 10 radians per second at 20° C. At least a second adhesive layer is provided in the construction, the second adhesive layer comprising a second adhesive composition with a second glass transition temperature.