Process for the polymerization of vinyl chloride in aqueous suspension utilizing an oil-soluble initiator and subsequently a water-soluble initiator and use of the powders obtained thereby
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United States of America Patent
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Jan 6, 1981
Grant Date -
N/A
app pub date -
Jun 2, 1978
filing date -
Jun 7, 1977
priority date (Note) -
Expired
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Abstract
Process for the polymerization of vinyl chloride in aqueous suspension in the presence of a dispersing system comprising a cellulosic derivative and an anionic emulsifying agent wherein the polymerizaton is initiated by an oil-soluble initiator and a water-soluble free radical polymerization initiator is added in the course of polymerization. The thus obtained polyvinyl chloride powders are particularly suitable for the production of battery separators.
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