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. 29, 1997
Filed:
Sep. 20, 1996
Applicant:
Inventors:
Masayuki Nakajima, Franklin Park Borough, PA (US);
Richard L Coalson, West Deer Township, Allegheny County, PA (US);
Kurt G Olson, West Deer Township, Allegheny County, PA (US);
Umesh C Desai, McCandless Township, Allegheny County, PA (US);
Assignee:
PPG Industries, Inc., Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08J / ; C08K / ; C08L / ;
U.S. Cl.
CPC ...
524589 ; 524590 ; 524591 ; 524839 ; 524840 ; 524507 ; 525123 ; 525452 ; 525453 ; 525455 ;
Abstract
A water-based vacuum forming laminating adhesive includes an ionic water-dispersed polyurethane, a carbodiimide and/or an aziridine, and optionally a vinyl acetate polymer. The polyurethane is characterized by a high polydispersity index, which provides a combination of adhesion and thermal stability. The polyurethane is made by chain extending an isocyanate functional urethane prepolymer with polyamine and ketimine.