Sodium thiosulfate as part of a redox initiator system for the p

Details Sodium thiosulfate as part of a redox initiator system for the p Sodium thiosulfate as part of a redox initiator system for the p

1988-01-15

1989-08-29

Schofer, Joseph L.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526234, 526322, C08F 432, C08F 400

Patent

active

048618497

ABSTRACT:
This invention relates to a process for polymerizing an aqueous solution of an .alpha.,.beta.-ethylenically unsaturated monomer and at least one crosslinking monomer to produce a water-swellable polymer using sodium thiosulfate as a component of a redox initiator system. The use of sodium thiosulfate as a component of a redox initiator system for the polymerization allows for controlling the rate of initiation so as to increase the time required for gel formation during polymerization. The resulting hydrated polymer of the present invention breaks up more uniformly and with greater ease resulting in a higher per batch yield.

REFERENCES:
patent: 2937163 (1960-05-01), Lang

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