FLAME RETARDANT POLYMERS AND ADDITIVE SYSTEM FOR IMPROVED VISCOSITY POLYMERS
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United States of America Patent
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Issued Date -
Mar 3, 2011
app pub date -
Aug 30, 2010
filing date -
Sep 1, 2009
priority date (Note) -
Abandoned
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Abstract
A flame retardant thermoplastic polymer composition, having a major amount of a thermoplastic polymer and a flame retardant additive comprising a phosphinic acid salt, a zinc salt and a melamine salt, in an amount effective to provide flame retardance to said polymer, and a low Tg glass containing phosphorous, tin and fluorine, in an amount sufficient to reduce the shear viscosity of the composition to less than about 10 Pa·s at a shear rate of about 10,000/sec and a temperature of 280° C., as measured by ASTM D-3835 is provided. Also provided is a flame retardant composition comprising phosphinic acid salt, a zinc salt, a melamine salt and the low Tg glass and a process for forming the flame retardant thermoplastic polymer composition by incorporating the flame retardant composition into the molten polymer.
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