Patent · US Expired

Heat curable adhesives based on polymers having a polybutadiene chain backbone and containing hydroxyl groups

US5149742A · kind A · utility

7Cited by

3References

20Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Richard Hemel · Monheim, DE
Julius Herold · Waverly, US
Hans-Juergen Buecken · Monheim, DE
Peter Hofmann · Goldkronach, DE

Key dates

Filing date	Dec 1, 1988
Grant date	Sep 22, 1992
Priority date	—
Expiry date	Dec 1, 2008

Classification

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

Abstract

Heat curable adhesives, based on polybutadiene containing hydroxyl groups, which have a content of (a) polybutadiene having a number average molecular weight of from about 1000 to 3500 and OH values in the range from about 20 to 100; (b) blocked multi-isocyanates, (c) sulfur and (d) conventional vulcanization accelerators, an which may also contain conventional, especially mineral, fillers, pigments and/or auxiliaries, show good elasticity behavior and high tensile shear strength after curing and have a relatively low viscosity favorable for processing before curing.

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