Preparation of stable water-in-oil emulsions of hydrolyzed polym

Details Preparation of stable water-in-oil emulsions of hydrolyzed polym Preparation of stable water-in-oil emulsions of hydrolyzed polym

1989-11-20

1991-04-16

Schofer, Joseph L.

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...

524801, C08F 232

Patent

active

050083210

ABSTRACT:
Stable water-in-oil emulsions of hydrolyzed polymers of N-vinylamides of the formula ##STR1## where R and R.sup.1 are each H or C.sub.1 -C.sub.6 -alkyl are prepared by polymerization of a compound of the formula I alone or as a mixture with other monoethylenically unsaturated monomers, in the form of a water-in-oil emulsion, to give a water-in-oil polymer emulsion, and subsequent hydrolysis of the polymer, by a process in which hydrolysis of the polymer in the form of the water-in-oil polymer emulsion is carried out in the presence of an acid or base and of from 1 to 30% by weight, based on the polymer, of an emulsifier which is obtainable by

REFERENCES:
patent: 4421602 (1983-12-01), Brunnmueller et al.
patent: 4623699 (1986-11-01), Brunnmueller et al.

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