Refluxing water-in-oil emulsion process for preparing water-solu

Details Refluxing water-in-oil emulsion process for preparing water-solu Refluxing water-in-oil emulsion process for preparing water-solu

1976-03-08

1977-07-19

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

260 296WQ, 260 793M, 260 795C, 526206, 526207, 526240, 526303, 526909, C08F 232, C08F23600

Patent

active

040370402

ABSTRACT:
There is provided a process for preparing water-soluble polyelectrolytes by a water-in-oil emulsion process. A mixture of a surfactant, free radical initiator, at least one water-soluble, oil-insoluble, ethylenically unsaturated monomer adapted to polymerize under refluxing conditions, oil and water (the oil and water being adapted to form an azeotropic boiling mixture) is heated with vigorous agitation. The monomer polymerizes at the reflux temperature under the vigorous agitation with a concomitant simultaneous loss of water. Finely divided, water-soluble particles result.

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patent: 3814742 (1974-06-01), Nagy

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