Patent · US Expired

Modified polyurethane hotmelt adhesive

US6465104B1 · kind B1 · utility

20Cited by

20References

66Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Michael Krebs · Hilden, DE
Yingjie Li · Elgin, US
Ingolf Scheffler · Wiesloch, DE

Key dates

Filing date	Oct 23, 2000
Grant date	Oct 15, 2002
Priority date	—
Expiry date	Oct 23, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/31551
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Hotmelt polyurethane adhesive compositions which are solid at room temperature and capable of being cured by moisture are obtained by combining the reaction product of a polyisocyanate and a low molecular weight polymer derived from ethylenically unsaturated monomers and containing active hydrogen groups such as hydroxyl with an isocyanate-containing polyurethane prepolymer derived from one or more polyols. The low molecular weight polymer component may, for example, be obtained by free radical polymerization of mixtures of unsaturated monocarboxylic acids, alkyl esters of unsaturated monocarboxylic acids, and/or hydroxyalkyl esters of unsaturated monocarboxylic acids.

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