Emulsion polymers free from emulsifiers and protective colloids,

Details Emulsion polymers free from emulsifiers and protective colloids, Emulsion polymers free from emulsifiers and protective colloids,

1988-09-20

1991-04-09

Bowers, Jr., Charles L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

5263231, 5263232, 524458, 524460, C08F23600

Patent

active

050066170

ABSTRACT:
The preparation of polymers free from emulsifiers and protective colloids by the free-radical initiated emulsion polymerization of ethylenically unsaturated copolymerizable monomers, wherein the emulsion polymerization is carried out in the absence of emulsifiers and protective colloids, using water-soluble, free-radical forming initiators and with the addition, at least at the start of the polymerization, of at least 0.01% by weight, based on the total amount of monomers, of poly-(ethylenically unsaturated) monomers, and the polymers can be obtained in the form of aqueous or non-aqueous dispersions or in the form of powder.
The use of the polymers in the form of dispersions or powders for modifying polymer materials and polymer raw materials and for the production of shaped articles and films.

REFERENCES:
patent: 4089828 (1978-05-01), Vasishth
patent: 4151146 (1979-04-01), Patella
patent: 4163838 (1979-08-01), Kalka
patent: 4246156 (1981-01-01), Heins
patent: 4415700 (1983-11-01), Batz
patent: 4440897 (1984-04-01), Maska
patent: 4459378 (1984-07-01), Ugelstad
patent: 4665142 (1987-05-01), Engel et al.
European Patent Application No. 0007042.

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