Patent · US Expired

Polyurethanes with improved tear propagation resistance

US6610811B1 · kind B1 · utility

14Cited by

2References

32Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Alfred Westfechtel · Hilden, DE
Roland Gruetzmacher · Wülfrath, DE
Rainer Hoefer · Goldkronach, DE

Key dates

Filing date	Aug 24, 1999
Grant date	Aug 26, 2003
Priority date	—
Expiry date	Nov 2, 2019

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09K2200/0252
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Polyurethanes having improved tear resistance which are the reaction product of the following components:A) a polyol component containing dimer diol and/or trimer triol and/or an OH-terminated polyester produced from polycarboxylic acids, preferably dimer fatty acid and/or trimer fatty acid, and diols andB) an isocyanate component containing prepolymers obtained by reacting polyfunctional isocyanates with dimer diol and/or trimer triol and/or an OH-terminated polyester produced from polycarboxylic acids, preferably dimer fatty acid and/or trimer fatty acid, and diols; and processes for their manufacture.

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