Amphoteric water-in-oil self-inverting polymer emulsion

Details Amphoteric water-in-oil self-inverting polymer emulsion Amphoteric water-in-oil self-inverting polymer emulsion

1983-12-01

1985-03-19

Guynn, Herbert B.

Compositions

Leather or fur treating

166275, 252 85C, E21B 4322

Patent

active

045058288

ABSTRACT:
An amphoteric water-in-oil self-inverting polymer emulsion is prepared which contains a copolymer of (1) a nonionic vinyl monomer and (2) an amphoteric vinyl monomer or a terpolymer of (1) a nonionic vinyl monomer, (2) an anionic vinyl monomer and (3) a cationic vinyl monomer in the aqueous phase, a hydrocarbon oil for the oil phase, a water-in-oil emulsifying agent and an inverting surfactant. An example of a copolymer is a copolymer of (1) a nonionic vinyl monomer such as acrylamide or methacrylamide and (2) an amphoteric vinyl monomer such as a reaction product of dimethylaminoethyl methacrylate and monochloroacetic acid. An example of a terpolymer is a terpolymer of (1) a nonionic vinyl monomer such as acrylamide or methacrylamide, (2) an anionic vinyl monomer such as sodium acrylate and (3) a cationic vinyl monomer such as a triethyl ammonium ethyl methacrylate methosulfate salt. The emulsion is useful in papermaking, treatment of sewage and industrial wastes, drilling muds and secondary and tertiary recovery of petroleum by water flooding.

REFERENCES:
patent: 3284393 (1966-11-01), Vanderhoff et al.
patent: 3624019 (1971-11-01), Anderson et al.
patent: 3724547 (1973-04-01), Bott
patent: 3744566 (1973-07-01), Szabo et al.
patent: 4022731 (1977-05-01), Schmitt
patent: 4022736 (1977-05-01), Schmitt
patent: 4034809 (1977-07-01), Phillips et al.
patent: 4077930 (1978-03-01), Lim et al.
patent: 4147681 (1979-04-01), Lim et al.

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