Patent · US Active

Laminates joined by polyurethane hot-melt adhesive and process for bonding plasticizer-containing plastics

US8932721B2 · kind B2 · utility

0Cited by

4References

28Claims

0Family size

Assignee

SIKA TECHNOLOGY AG · CH

Inventors

Kai Paschkowski · Jork, DE
Doreen Janke · Leck, DE
Urs Burckhardt · Zürich, CH
Mario Slongo · Muttenz, CH

Key dates

Filing date	Dec 9, 2011
Grant date	Jan 13, 2015
Priority date	—
Expiry date	Dec 9, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31583
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

The present invention relates to laminates of a plasticizer-containing plastic, obtained by bonding by means of a moisture-reactive hot-melt adhesive which comprises at least one aldimine and at least one polyurethane polymer which contains isocyanate groups and is solid at room temperature. The bonded assembly is notable for improved adhesive, particularly following heat/moisture storage or alternating storage. Preferred embodiments of such laminates are bonded films or film-laminated supports, the film preferably being a pPVC film.

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