Permanently antistatic thermoplastic molding composition

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

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260DIG16, 260DIG17, 260DIG19, 524513, 524605, 524910, C08K 324, C08K 503, C08K 506, C08L 6702

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045799024

ABSTRACT:
The present invention provides a permanently antistatic, injection moldable thermoplastic composition comprising a polybutylene terephthalate resin having an intrinsic viscosity in the range of about 0.7 to about 1.4 deciliters per gram measured in ortho-chlorophenol at 25.degree. C., an antistatic dopant comprising an electron acceptor compound, an electron donor compound, and polytetrafluoroethlene, and less than about 10 percent by weight based on the total weight of the molding composition of carbon fibers having lengths between about 0.1 and about 1.0 inch. Such a molding composition exhibits a volume resistivity of less than 1.times.10.sup.8 ohm-cm, exceptional low wear performance, excellent mechanical properties, and ease of manufacture.

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Fowler et al, "Formulating Cost-Effective Conductive Compositions," Plastics Engineering; Jun. 1981, pp. 29-32.
Davenport, "Metalloplastics-High Cnductivity Materials," Conductive Polymers, Polymer Science and Technology Series, vol. 15, edited by Raymond B. Seymour, 1981.

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