Flame retardant thermoplastic molding compounds of high electroconductivity
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United States of America Patent
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Dec 25, 1984
Issued Date -
N/A
app pub date -
Dec 18, 1981
filing date -
Feb 27, 1981
priority date (Note) -
Expired
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Abstract
Flame retardant, conductive plastic molding compositions are provided in granular form comprising a thermoplastic resinous matrix through which are distributed fine, solid anisometrically shaped metallic particles in amounts totalling between about 12% and about 40% by volume. The formulation of said matrix is such that it contains at least about 24% by weight of chlorine derived primarily from vinyl chloride resins having K values between about 45 and about 70, and it also contains from about 3% to about 15% by weight of balanced lubricant/stabilizer combinations. Said anisometrically shaped metallic particles typically have aspect ratios of over about 10 to 1 and a minimum characteristic dimension of over 1 micron and are preferably composed almost entirely of conductive metal.
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