Elastomeric, ethylenically unsaturated polyurethanes and radiation polymerizable mixtures containing such polyurethanes

US4399239A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Walter Herwig · Bad Soden, DE
• Kurt Erbes · Frankenthal (Pfalz), DE
• Rudolf Decker · Bodenheim, DE
• Helga Sikora · Wiesbaden, DE

Key dates

• Filing date: Jul 21, 1982
• Grant date: Aug 16, 1983
• Expiry date: Jul 21, 2002

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31786
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A polyurethane corresponding to the formula: ##STR1## wherein Q is a divalent, mononuclear or dinuclear aromatic radial which is unsubstituted or is substituted by lower alkyl groups and which can contain, as a linking member, a lower alkylene group, PA0 X is one of the groups --O--Ph--Z--Ph--O-- and --OOC--(CH.sub.2).sub.y --COO--, PA0 Ph being an optionally substituted phenylene group, PA0 Z being an alkylene group having 1--4 carbon atoms and PA0 y being a number from 2 to 12, PA0 R is a hydrogen atom or a methyl group, PA0 Y is an alkylene radical having 2-6 carbon atoms, PA0 m is an integer from 4 to 50 PA0 n is an integer from 1 to 6 and PA0 o is an integer from 4 to 20 having the properties of thermolasts and being hardenable to give elastic products. It is suitable for use as a hardenable constituent of photopolymerizable materials.