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:
Mar. 26, 2013
Filed:
Mar. 29, 2007
Martin Demmig, Quickborn, DE;
André Buchholz, Ritterhude, DE;
Peter Kühnemund, Frestedt, DE;
Sika Technology AG, Baar, CH;
Abstract
The invention relates to the use of a one-component aqueous polyurethane dispersion composition (PD) as a primer for the adhesion of plastic films (KF) by means of an aqueous one-component polyurethane dispersion adhesive (DK). The aqueous polyurethane dispersion composition (PD) comprises a polyurethane (P) and carbodiimide groups and/or carboxyl groups, and the polyurethane dispersion adhesive (DK) comprises a polyurethane (P) and carbodiimide groups, and carboxyl groups such that the aqueous polyurethane dispersion composition (PD) and the aqueous polyurethane dispersion adhesive (DK) react with one another in a polyaddition reaction when heated to a temperature of 50° C. or more. The invention also relates to primer-coated plastic films, to composite bodies produced therefrom and to methods for the production thereof.