Ascorbate short-stops

Details Ascorbate short-stops Ascorbate short-stops

1979-12-05

1980-12-30

Levin, Stanford M.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C08F 242

Patent

active

042424771

ABSTRACT:
The polymerization of butadiene and styrene in an emulsion, free-radical polymerization process using a persulphate initiator is effectively short-stopped by the addition of ascorbic acid or the sodium or potassium salts thereof. The butadiene-styrene polymer so produced may be used in those end uses generally associated with the prior known use of such polymers.

REFERENCES:
patent: 2430590 (1947-11-01), Stewart
patent: 2762791 (1956-09-01), Pease et al.
patent: 3382223 (1968-05-01), Borsini et al.

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