Process for the continuous coagulation of vinyl polymer latices

Details Process for the continuous coagulation of vinyl polymer latices Process for the continuous coagulation of vinyl polymer latices

1991-04-29

1994-05-24

Schofer, Joseph L.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528488, 528490, 528500, 528503, C08F 616

Patent

active

053149904

ABSTRACT:
A process for the continuous processing of vinyl polymer latices to produce thermoplastically processible vinyl polymer powder by coagulating a stream of a vinyl polymer latex by the addition of a stream of a coagulant with intensive mixing and shearing in a cascade of vessels at an average residence time per vessel of 10 to 60 minutes and at temperatures from 50 to 120.degree. C., volatile auxiliary substances and residual monomers in the polymer being optionally removed by steam distillation and part of the serum separated from the vinyl polymer being added to the stream of coagulant.

REFERENCES:
patent: 4110529 (1978-08-01), Stoy
patent: 4767803 (1988-09-01), Yasui et al.

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