Polymer dispersions and their preparation

Details Polymer dispersions and their preparation Polymer dispersions and their preparation

1984-03-30

1985-07-09

Griffin, Ronald W.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524764, 524767, 524800, 524801, 524804, 526910, 526911, C08K 505, C08K 506, C08L 3300, C08L 3500

Patent

active

045283214

ABSTRACT:
A dispersion of water soluble or water swellable polymer in water immiscible liquid is made by reverse phase polymerization utilizing a dispersing system comprising a polymerization stabilizer and the resulting dispersion, optionally after dehydration, may be distributed into water utilizing a distributing system. The dispersing system or the distributing system, or both, includes at least one non-ionic compound selected from C.sub.6-12 alkanols, C.sub.4-12 alkylene glycol monoethers and their C.sub.1-4 alkanoates, C.sub.6-12 polyalkylene glycol monoethers and their C.sub.1-4 alkanoates and benzyl alcohol. Novel dispersions are made by reverse phase polymerization and, in particular, include a non-ionic compound selected from C.sub.4-12 alkylene glycol monoethers, their C.sub.1-4 alkanoates and C.sub.6-12 polyalkylene glycol monoethers and their C.sub.1-4 alkanoates. When the polymer is water soluble a solution of it in water can be made by distributing the dispersion into water.

REFERENCES:
patent: 2982749 (1961-05-01), Friedrick et al.
patent: 3284393 (1966-11-01), Vanderhoff et al.
patent: 4052353 (1977-10-01), Scanley
patent: 4150210 (1979-04-01), Anderson et al.
patent: 4328149 (1982-05-01), Morse et al.

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