Self-inverting water-in-oil emulsions of water-soluble polymers

Details Self-inverting water-in-oil emulsions of water-soluble polymers Self-inverting water-in-oil emulsions of water-soluble polymers

1981-07-17

1985-06-25

Schofer, Joseph L.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524 80, 524555, G21K 110

Patent

active

045254966

ABSTRACT:
A water-in-oil emulsion of a water-soluble polymer such as acrylamide/acrylic acid copolymer having improved invertibility is prepared by (1) adding a portion of an inverting surfactant such as sorbitan trioleate having 20 polyoxyethylene units to a water-in-oil emulsion of water-soluble monomer, (2) polymerizing the monomer and (3) adding a remaining amount of inverting surfactant to the emulsion.

REFERENCES:
patent: 3806485 (1974-04-01), Frisque
patent: 3979349 (1976-09-01), Fink et al.
patent: 4022731 (1977-05-01), Schmitt
patent: 4077930 (1978-03-01), Liu et al.
patent: 4147681 (1979-04-01), Liu et al.
patent: 4152307 (1979-05-01), Shibahara et al.

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