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. 09, 2014
Filed:
Apr. 30, 2010
Applicant:
Robert Ray Burch, Exton, PA (US);
Inventor:
Robert Ray Burch, Exton, PA (US);
Assignee:
E I du Pont de Nemours and Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 27/00 (2006.01); C08K 5/00 (2006.01); C08J 3/22 (2006.01); C09J 7/02 (2006.01); C09J 9/00 (2006.01); C09J 11/06 (2006.01); C09J 11/00 (2006.01); C09J 153/02 (2006.01); C08K 5/01 (2006.01); C08K 5/09 (2006.01);
U.S. Cl.
CPC ...
C09J 153/02 (2013.01); C09J 2491/00 (2013.01); C09J 7/0221 (2013.01); C09J 9/00 (2013.01); C08K 5/01 (2013.01); C09J 2453/00 (2013.01); C08K 5/09 (2013.01); C09J 2201/622 (2013.01); C09J 11/06 (2013.01); C09J 11/00 (2013.01);
Abstract
Temperature switchable adhesives formed by combining a pressure sensitive adhesive, which does not exhibit temperature switchable properties, with a crystallizable oil are described. These temperature switchable adhesives exhibit a sharp reduction in peel strength when the temperature is raised above the switching temperature. The adhesive properties of these adhesives may be readily tuned by adjusting the ratio of the elastomer, tackifier, and the crystallizable oil, and by choosing different crystallizable oils. The temperature switchable adhesives have use in medical, consumer, and industrial applications.