Inverse emulsion crosslinked polyacrylic acid of controlled pH

Details Inverse emulsion crosslinked polyacrylic acid of controlled pH Inverse emulsion crosslinked polyacrylic acid of controlled pH

Filed on

1991-09-16

Date issued

1993-06-01

Examiner

Schofer, Joseph L.

Patent Class

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

SubClass

Synthetic resins

SubSubClass

At least one aryl ring which is part of a fused or bridged...

Other Related Categories

524265, 524109, 524111, 524220, 524221, 524243, 524320, 524375, 524377, 524832, C08L 3100

Type

Patent

Status

active

Patent number

052160700

Description

ABSTRACT:
A method for forming a water-in-oil emulsion of a water-soluble polymer by emulsion polymerization of the corresponding monomer in the presence of an initiator and an emulsifier which is a polysiloxane polyalkylene polyether copolymer. The polymerization of acidic monomer can be carried out without complete neutralization of the monomer beforehand and without adverse effects on the emulsion stability. The water-in-oil product emulsion is easily inverted to a stable oil-in-water emulsion.

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