Transparent thermoplastic composition with improved electrical conductivity in the melt

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United States of America Patent

PATENT NO 9570211
APP PUB NO 20100051882A1
SERIAL NO

12199056

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Abstract

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The present invention provides a transparent thermoplastic molding composition made from a transparent blend of a polycarbonate resin with a polyester resin, 0.005 to 2 weight percent, based on the weight of the composition, of a perfluoroalkylsulfonic acid salt of the formula (I): (RA—SO3)nXn+ (I), wherein R denotes perfluorinated linear or branched carbon chain having 1 to 30 carbon atoms, A denotes a direct bond or an aromatic nucleus, n denotes an integer of 1 or 2, and X denotes a metal element selected from the first or the second column in the Periodic Table of the Elements, and 0 to 5 weight percent, based on the weight of the composition, of a glycerol monostearate. The inventive composition has a total transmittance according to ASTM D-1003 of greater than 84% and an electric resistivity according to ASTM D-257 of less than about 2.5E+06 ohm-m.

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Patent Owner(s)

Patent OwnerAddress
COVESTRO LLC1 COVESTRO CIRCLE PITTSBURGH PA 15205

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Xiangyang Seven Fields, US 130 1479
Mason, James P Carnegie, US 42 1057

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