Polyether ester block copolymer

To provide a polyether ester block copolymer which has surface hardness suitable to be applied to a structural member and excellent in sound deadening quality and tribological property, a polyether ester block copolymer of the present invention comprises (a) aromatic dicarboxylic acid unit, (b) 1,3-...

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1. Verfasser:	YAMAOKA KATSUSHI
Format:	Patent
Sprache:	eng
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS ORGANIC MACROMOLECULAR COMPOUNDS PHYSICS SOUND-PRODUCING DEVICES THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	To provide a polyether ester block copolymer which has surface hardness suitable to be applied to a structural member and excellent in sound deadening quality and tribological property, a polyether ester block copolymer of the present invention comprises (a) aromatic dicarboxylic acid unit, (b) 1,3-propanediol and/or 1,4-butanediol unit and (c) long chain diol unit mainly including polyoxytrimethylene glycol, wherein the durometer hardness (type D), measured according to the principle of the method described in JIS K6253, is 40 or larger and 78 or smaller.