Preparation of polyurethane elastomers, and mixtures suitable for this purpose comprising polyoxybutylene-polyoxyalkylene glycols and glycidyl compounds

US5162387A · kind A · utility

Assignee

• BASF SE

Inventors

• Ulrich Abel · Schifferstadt, DE
• Friedhelm Lehrich · Bohmte, DE
• Wolfgang Straehle · Heidelberg, DE
• Peter Groll · Schifferstadt, DE

Key dates

• Filing date: Feb 11, 1992
• Grant date: Nov 10, 1992
• Expiry date: Feb 11, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2110/0066
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for the preparation of a polyurethane elastomer by reacting PA1 a) an organic and/or modified organic polyisocyanate with PA1 b) at least one relatively high-molecular-weight polyoxybutylene-polyoxyalkylene glycol from the group comprising polyoxybutylene-polyoxyethylene glycols, polyoxybutylene-polyoxypropylene glycols and/or polyoxybutylene-polyoxpropylene-polyoxyethylene glycols, PA1 c) at least one chain extender and/or crosslinking agent and PA1 d) at least one glycidyl compound containing units having the structure ##STR1## in which n is a number from 1 to 6, PA1 X is an alkylene, arylene, --O-- or --N-- bridge, and PA1 R.sup.1 and R.sub.2 are identical or different and are hydrogen, methyl or ethyl, in the presence or absence of PA1 e) blowing agents, PA1 f) catalysts and PA1 g) assistants and/or additives, and mixtures of polyoxybutylene-polyoxyalkylene glycols (b) and glycidyl compounds (d).