Inhibiting discoloration of halogen-containing polymers after radiation
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United States of America Patent
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Issued Date -
Nov 1, 2001
app pub date -
Jun 11, 2001
filing date -
Dec 17, 1998
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Disclosed is a method of inhibiting the discoloration of a halogen-containing polymer, particularly poly(vinyl chloride), after exposure to gamma radiation. About 0.0001 to about 5 wt % of a dithiocarbamate or a dithiophosphate stabilizer is added to the polymer. The stabilizer can be added during polymerization or during compounding. Also disclosed is a composition of a halogen-containing polymer and a dithiocarbamate or dithiophosphate stabilizer.
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