Process for dewatering a grafted rubber latex

Details Process for dewatering a grafted rubber latex Process for dewatering a grafted rubber latex

1979-11-05

1981-08-18

Michl, Paul R.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

528487, 528492, C08F27904

Patent

active

042847370

ABSTRACT:
The invention relates to a process for dewatering an aqueous latex containing rubber particles grafted with alkenyl aromatic and alkenyl nitrile monomers and emulsified with an anionic surfactant wherein alkenyl aromatic and alkenyl nitrile monomers are dispersed in said latex along with a cationic surfactant in an amount sufficient to deemulsify said grafted rubber particles. The grafted rubber particles are extracted from the aqueous phase into the monomer phase as a liquid oil phase, with the aid of the cationic surfactant, said aqueous phase forming a separate water phase essentially free of said oil phase followed by separating said water phase from said liquid oil phase.

REFERENCES:
patent: 2576909 (1951-12-01), Adams
patent: 3875104 (1975-04-01), Siegele
patent: 3950455 (1976-04-01), Okamoto
patent: 3957912 (1976-05-01), Cincera

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