PRODUCTION OF POLYURETHANE POLYMERS, THE POLYMERS SO PRODUCED, AND COMPOSITIONS CONTAINING THEM

A polyurethane polymer having desired chain-pendant or in-chain groups Y is prepared by 1) converting terminal isocyanate groups of an isocyanate-terminated polyurethane prepolymer to groups providing carbon- or nitrogen-bound -NH2 and/or -NH- groups, and 2) chain extending modified prepolymer frome...

Full description

Saved in:
Bibliographic Details
Main Authors PEARS; DAVID A, HEUTS; MARTINUS P. J
Format Patent
LanguageEnglish
Published 15.09.1992
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
Online AccessGet full text

Cover

More Information
Summary:A polyurethane polymer having desired chain-pendant or in-chain groups Y is prepared by 1) converting terminal isocyanate groups of an isocyanate-terminated polyurethane prepolymer to groups providing carbon- or nitrogen-bound -NH2 and/or -NH- groups, and 2) chain extending modified prepolymer fromed in 1) with a compound having at least two enolic carbonyl groups and also having at least one group Y which becomes chain-pendant or in-chain in the chain-extended polymer.
Bibliography:Application Number: US19910654976