SUSTAINABLE COPOLYESTER ELASTOMER COMPOSITIONS WITH IMPROVED COLOR CAPABILITY

Thermoplastic compositions include: a copolyester elastomer including a polybutylene terephthalate (PBT) moiety and an elastomer moiety; and from greater than 0.1 wt% to 9 wt% of at least one brightening agent. The PBT moiety includes PBT derived from post-consumer, pre-consumer or post-industrial r...

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Bibliographische Detailangaben
Hauptverfasser:	SWAMINATHAN, Shubashree, DASH, Ranjan, VOLLENBERG, Peter
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING-UP
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Zusammenfassung:	Thermoplastic compositions include: a copolyester elastomer including a polybutylene terephthalate (PBT) moiety and an elastomer moiety; and from greater than 0.1 wt% to 9 wt% of at least one brightening agent. The PBT moiety includes PBT derived from post-consumer, pre-consumer or post-industrial recycled (PCR) polyethylene terephthalate (PET), and the thermoplastic composition has an L* color value of at least 80 as determined according to a CIELab color space standard. Methods for forming the copolymer elastomer and compositions including it are also described.