Patent · US Active

Aqueous one-component dispersion primer for the adhesion of plastic films by means of dispersion adhesives

US8404304B2 · kind B2 · utility

0Cited by

2References

10Claims

0Family size

Assignee

SIKA TECHNOLOGY AG · CH

Inventors

Martin Demmig · Quickborn, DE
Andre Buchholz · Georgsmarienhütte, DE
Peter Kühnemund · Burg (Dithmarschen), DE

Key dates

Filing date	Mar 29, 2007
Grant date	Mar 26, 2013
Priority date	—
Expiry date	Mar 26, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31551
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

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 (P1) and carbodiimide groups and/or carboxyl groups, and the polyurethane dispersion adhesive (DK) comprises a polyurethane (P2) 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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.