Aftertreatment of spray dried, powdered vinyl chloride emulsion

Details Aftertreatment of spray dried, powdered vinyl chloride emulsion Aftertreatment of spray dried, powdered vinyl chloride emulsion

1976-09-13

1978-09-19

Levin, Stanford M.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Treating polymer containing material or treating a solid...

260 318R, 526 81, 526317, 5263294, 526330, 526343, 5263442, C08F 602

Patent

active

041156404

ABSTRACT:
The rheological properties of paste-formable, powdered polymerizates produced by polymerizing vinyl chloride or a mixture of vinyl chloride and a copolymerizable monomer in an aqueous emulsion in the presence of a water-soluble catalyst and an alkali metal salt of a fatty acid as the polymerization emulsifier and spray drying the resultant polymerizate, are improved by treating the powdered polymerizate with a gas which forms an acid in an aqueous solution.

REFERENCES:
patent: 2556260 (1951-06-01), Downing
patent: 3805869 (1974-04-01), Winter et al.

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