PROCEDIMENTO PER LA PRODUZIONE DI POLIURETANAMMIDI A BLOCCHI TERMOPLASTICAMENTE LOVORABILI

A method for the preparation of block polyurethane amides in a melt by the reaction of (a) a linear polyamide having terminal carboxylic acid ester groups and which melts at not more than 210 DEG C.; and (b) a polyurethane having hydroxyl groups at its chain ends; at a temperature of 160 DEG C. to 2...

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Bibliographic Details
Main Authors SCHULTZE HANS-JOACHIM, LIEDLOFF HANNS-JORG
Format Patent
LanguageItalian
Published 31.03.1989
Edition4
Subjects
ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE
ADHESIVES
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
DYES
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL
ORGANIC MACROMOLECULAR COMPOUNDS
PAINTS
POLISHES
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF MATERIALS AS ADHESIVES
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Summary:A method for the preparation of block polyurethane amides in a melt by the reaction of (a) a linear polyamide having terminal carboxylic acid ester groups and which melts at not more than 210 DEG C.; and (b) a polyurethane having hydroxyl groups at its chain ends; at a temperature of 160 DEG C. to 240 DEG C., and in the presence of a trans-esterification accelerator.
Bibliography:Application Number: IT19870047741