Method of preparing homo and co-polymers of vinyl chloride adapted to give plastisols from a latex containing two populations of particles
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United States of America Patent
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Jul 20, 1982
Grant Date -
N/A
app pub date -
Oct 23, 1980
filing date -
Nov 6, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of preparing homo and co-polymers of vinyl chloride in the form of a powder adapted to give plastisols, in which a latex of homo or co-polymers of vinyl chloride, containing from 30 to 60% by weight of dry material and comprising two populations of particles with specific granulometric properties, is concentrated by eliminating a fraction of the aqueous phase in the liquid state, then the residual water is dried off. The dry material content of the concentrated latex is from 50 to 80% by weight, and the absolute difference between the dry material content of the latex before and after concentration is over 10% by weight.
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