Process for the manufacture of vinyl chloride polymer dispersion

Details Process for the manufacture of vinyl chloride polymer dispersion Process for the manufacture of vinyl chloride polymer dispersion

1977-10-26

1979-06-12

Henderson, Jr., C. A.

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

Synthetic resins

Treating polymer containing material or treating a solid...

159 48L, 239223, 260 296PT, 260884, 5263442, 528501, C08F 616

Patent

active

041580923

ABSTRACT:
Polymer dispersions are subject to a spray treatment to reduce the monomer content thereof. The dispersions are sprayed against the wall of the vessel by means of at least one spray nozzle.
The residual monomer content of polymer dispersions is further reduced by spraying them in at least two series connected vessels, conducting the escaping gaseous constituents in one direction and the dispersion in opposite direction from one vessel to the next. The process is little liable to troubles and ensures a very effective monomer removal without thermal damage of the polymer.

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patent: 1959301 (1934-05-01), Northcutt
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patent: 2514207 (1950-07-01), Johnson
patent: 2974131 (1961-03-01), McLeod
patent: 3151984 (1964-10-01), Peebles
patent: 3266085 (1966-08-01), Nacke
patent: 3477094 (1969-11-01), Maahs
patent: 3547865 (1970-12-01), Hoch
patent: 3563975 (1971-02-01), Zavasnik
patent: 3777262 (1973-11-01), Clementi
patent: 3956249 (1976-05-01), Goodman

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