Emulsion polymerization process with low emulsifier concentratio

Details Emulsion polymerization process with low emulsifier concentratio Emulsion polymerization process with low emulsifier concentratio

1980-01-21

1981-09-15

Griffin, Ronald W.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 23EP, 260 23EM, 260 318R, 260 318G, 260 342, 526 74, C08F 218, C08F 220

Patent

active

042896673

ABSTRACT:
There is disclosed a process for producing vinyl dispersion resins by means of the emulsion polymerization technique. The vinyl monomer or monomers are reacted in an aqueous medium using a water-insoluble free radical yielding catalyst, an emulsifier or emulsifier system and a small amount of water-insoluble plasticizer whereby the amount of emulsifier(s) necessary is greatly reduced. All the reaction ingredients are thoroughly mixed and homogenized prior to polymerization at a temperature of about 30.degree. C. to about 70.degree. C. The paste resins so produced have improved properties, such as foam properties, and polymer buildup in the reactor is reduced.

REFERENCES:
patent: 3867331 (1975-02-01), Mikofalvy et al.
patent: 4076920 (1978-02-01), Mikofalvy et al.
patent: 4085267 (1978-04-01), Morningstar et al.
patent: 4113687 (1978-09-01), Ugelstad
patent: 4186259 (1980-01-01), Bush et al.
patent: 4203879 (1980-05-01), DeWald et al.

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