Patent · US Expired

Moisture-curing, polyurethane hot-melt compositions

US5173538A · kind A · utility

31Cited by

7References

28Claims

0Family size

Assignee

Bostik, Inc. · US

Inventors

Heinz G. Gilch · Bad Homburg vor der Höhe, DE
Walter Rath · Oberursel, DE

Key dates

Filing date	Oct 17, 1989
Grant date	Dec 22, 1992
Priority date	—
Expiry date	Oct 17, 2009

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2170/20
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A quick-setting, moisture-curing hot-melt polyurethane composition having a first polyether-based polyurethane prepolymer having a Tg above room temperature and a second polyurethane prepolymer with a Tg below room temperature, the first prepolymer being prepared from a low molecular weight polyether; preferably the second prepolymer is also polyether based and prepared from a high molecular weight polyether.

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