Patent · US Expired

Process for the preparation of cellular and non-cellular polyurethane elastomers

US4440705A · kind A · utility

13Cited by

5References

3Claims

0Family size

Assignee

BASF SE

Inventors

Dietmar Nissen · Heidelberg, DE
Wolfgang Straehle · Heidelberg, DE
Matthias Marx · Fürstenfeldbruck, DE

Key dates

Filing date	Jul 1, 1982
Grant date	Apr 3, 1984
Priority date	—
Expiry date	Jul 1, 2002

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S521/914
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for the preparation of optionally cellular and non-cellular polyurethane elastomers, preferably by reaction injection molding, organic polyisocyanates, polyether polyols based on polyoxyalkylene polyether polyols with terminal hydroxyethylene groups and an ethoxylation degree of 1 to 13, having a content of primary hydroxyl groups at the corresponding degree of ethoxylation as the value of curve A to 100 percent with curve A describing the dependency of the primary hydroxyl group content upon the degree of ethoxylation are reacted with chain extenders and/or cross-linking agents in the presence of catalysts as well as optionally blowing agents, auxiliaries and additives.

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