Patent · US Expired

Thermoplastic desiccant

US6613865B1 · kind B1 · utility

8Cited by

5References

42Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Robert Magunia · Mosbach, DE
Gerald Petry · Hückelhoven, DE
Michael Krebs · Hilden, DE

Key dates

Filing date	Apr 26, 2002
Grant date	Sep 2, 2003
Priority date	—
Expiry date	Apr 26, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G2170/20
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to thermoplastic compositions that contain reactive isocyanate groups and that are suitable for use as desiccants for packaging moisture-sensitive goods, especially for polyurethane hotmelt adhesives that are cross-linked upon exposure to moisture. The compositions are formed by the reaction of hydroxy- or amino-containing polyols, including sugars, with an excess of polyisocyanates, and admixing the resulting product with polyurethane catalysts.

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