Stabilized rigid polyvinyl chloride compositions
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United States of America Patent
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Apr 18, 1989
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N/A
app pub date -
Feb 3, 1988
filing date -
Mar 10, 1986
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Expired
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Abstract
Rigid polyvinyl chloride stabilized against the adverse effects of ultraviolet radiation by the addition thereto of effective amounts of 2,2,6,6-tetraalkylpiperidine compound and an organotin carboxylate thermal stabilizer, optionally with reduced amounts of titanium dioxide, organotin mercapto esters and/or organotin mercaptide thermal stabilizers.
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