Antistatic thermoplastic composition comprising a graft polymer, halogenated thermoplastic polymer and conductive carbon black

Patent 4592861 Issued on June 3, 1986. Estimated Expiration Date:

June 8, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3053800

3877605

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Patent #: 4128539
Issued on: 12/05/1978
Inventor: Onizawa

Multi-component graft copolymer and thermoplastic resin composition thereof
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Inventors

Application

No. 06/618631 filed on 06/08/1984

US Classes:

252/511, Resin, rubber, or derivative thereof containing523/174, Phonograph record molding composition or process of preparing524/495, Mixing with carbon, e.g., graphite, etc., having numerical limitations, other than amount, e.g., included herein are particle size, surface area, etc., or composition or product thereof, DNRM524/496, Carbon particle having specified dimension524/504Solid graft or solid graft-type copolymer with other solid polymer, SICP, or SPFI

Examiners

Primary: Lilling, Herbert J.

Attorney, Agent or Firm

Dickheiser; William E.

International Classes

C08K 3/00 (20060101)
C08L 27/06 (20060101)
C08L 27/00 (20060101)
C08K 3/04 (20060101)
C08L 51/06 (20060101)
C08L 51/00 (20060101)
C08L 51/04 (20060101)
C08L 23/00 (20060101)
C08L 23/28 (20060101)
C08L 55/00 (20060101)
C08L 55/02 (20060101)

Abstract

An antistatic thermoplastic composition comprising a blend of a thermoplastic graft polymer; a thermoplastic halogenated polymer; and an amount of conductive carbon black effective to cause the composition to have a surface resistivity of 102 -1012 ohm/square, wherein the ratio of (a)/(b) is from 9:1-1:9, by weight and the weight percentage of (c) is from 2-10%.