VERFAHREN ZUR HERSTELLUNG THERMOPLASTISCH VERARBEITBARER BLOCKPOLYURETHANAMIDE

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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Bibliographische Detailangaben
Hauptverfasser:	LIEDLOFF,HANNS-JOERG,DOMAT, SCHULTZE,HANS-JOACHIM
Format:	Patent
Sprache:	ger
Schlagworte:	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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Beschreibung
Zusammenfassung:	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.