Stabilization of halogenated rubber
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United States of America Patent
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Sep 10, 2002
Issued Date -
N/A
app pub date -
Aug 25, 1999
filing date -
Mar 6, 1997
priority date (Note) -
Expired
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Abstract
Halogenated isobutylene-p-methylstyrene polymers are stabilized against discoloration with a weak base such as 100 to 500 ppm sodium bicarbonate. The additive is added to the rubbery polymers after dewatering in the finishing step of their manufacture. The curability of the stabilized rubbers is not adversely affected by the sodium bicarbonate additive.
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