Process for preparing open-cell structure of vinyl chloride resin
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United States of America Patent
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-
Feb 7, 1984
Grant Date -
N/A
app pub date -
Aug 23, 1982
filing date -
Dec 15, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for preparing an open-cell structure from a vinyl chloride resin. The process includes mixing a vinyl chloride resin, stabilizer, plasticizer, surface active agent, azodicarbonamide and 4,4'-oxybisbenzenesulfonyl hydrazide to form a vinyl chloride resin paste. The vinyl chloride resin paste of step (a) is rendered alkaline, and mixed to form a uniformly-mixed paste. The paste is permitted to expand, and then heated to cause gelation.
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