Polychloroprene powders

Details Polychloroprene powders Polychloroprene powders

1975-04-28

1976-10-26

Levin, Stanford M.

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

Synthetic resins

Treating polymer containing material or treating a solid...

260 328A, 260 334R, 260 4247, 526 82, 526 88, 526234, 526236, 526225, 526296, 528495, 528502, 528503, 528487, 528488, C08F 622

Patent

active

039883060

ABSTRACT:
Free flowing polychloroprene powder can be produced from standard latexes by adding 1 - 10% of a salt of an alkyl sulfate, such as sodium lauryl sulfate to an acidified latex and precipitating the rubber in a coagulating solution, separating the particles and drying them. It was also found that the precipitated polychloroprene particles could be made stable in alcohols and ketone (which affords a simpler drying procedure) by adjusting the pH of the mixture of latex and coagulating solution to about 7.25.

REFERENCES:
patent: 2671075 (1954-03-01), Hempel
patent: 3392134 (1968-07-01), Apotheker
patent: 3558576 (1971-01-01), Weller
patent: 3761455 (1973-09-01), Tanara et al.

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