Patent · US Expired

Molded polyurethane body

US6573341B2 · kind B2 · utility

2Cited by

3References

9Claims

0Family size

Assignees

Carl Freudenberg KG · DE
Magna Eybl Systemtechnik GmbH · DE

Inventors

Horst Muhlfeld · Fürth, DE
Thomas Schauber · Hemsbach, DE
Silke Wagener · Echterdingen, DE

Key dates

Filing date	May 25, 2001
Grant date	Jun 3, 2003
Priority date	—
Expiry date	May 25, 2021

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/833
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A molded polyurethane body is obtainable by reacting:a) one or more aliphatic polyols having a molecular weight of 450 to 6000 g/mol and a hydroxyl value of 10 to 235;b) with aliphatic and/or cycloaliphatic diisocyanates in an equivalent ratio of diisocyanate to polyol of 1.2:1.0 to 16.0:1.0;c) with diols as chain lengthening agents having a molecular weight of 60 to 450 g/mol, the NCO index formed from the quotient, which is multiplied by 100, of the equivalent ratio of isocyanate groups to the sum of the hydroxyl groups of polyol and chain lengthening agents lying within a range of 90 to 105; andd) with an at least bifunctional reaction component, which is suitable for subsequent cross-linking.

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