Patent · US Expired

Adhesive compositions

US4661542A · kind A · utility

29Cited by

3References

18Claims

0Family size

Assignee

USM Holding AG · US

Inventors

Heinz G. Gilch · Bad Homburg vor der Höhe, DE
Hubertus von Voithenberg · Bad Homburg vor der Höhe, DE
Reinhard Rengel · Bad Soden, DE

Key dates

Filing date	Jan 29, 1986
Grant date	Apr 28, 1987
Priority date	—
Expiry date	Jan 29, 2006

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2170/40
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Pressure-sensitive adhesives which are mixed immediately prior to application, or need drying equipment tend to be expensive in use while those applied as hot melts tend to have poor heat resistance. According to the invention an adhesive composition curable by atmospheric moisture is provided, the composition comprising a prepolymer component with isocyanate functionality between 2.0 and 3.0 together with one or more polyetherurethane prepolymers having NCO groups available for reaction with water for chain extension, the cured adhesive composition having a glass transition temperature below 20.degree. C.

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