Process for preparation of high solids concentrated latex

Details Process for preparation of high solids concentrated latex Process for preparation of high solids concentrated latex

1987-11-16

1989-02-14

Schofer, Joseph L.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524575, C08J 300

Patent

active

048046949

ABSTRACT:
A process for agglomerating synthetic rubber latexes to obtain rubber particles having large average particle sizes comprising the steps of mixing with a synthetic rubber latex having primary or secondary carboxyl groups at the particle surfaces of the latex, an inorganic potassium salt in a concentration in the latex of at least about 0.50 normal to agglomerate the particles, and separating the agglomerated rubber particles from the liquid of the latex.
Separation of the agglomerated rubber particles may be accomplished by gravity or centrifugation when the potassium ion concentration in the latex is at least about 1.15 normal.

REFERENCES:
patent: 2444801 (1948-07-01), Arundale
patent: 3049502 (1962-08-01), Howland
patent: 3551370 (1970-12-01), Dalton
patent: 3915909 (1975-10-01), Schnoring

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