Continuous polymerization of chloroprene

Details Continuous polymerization of chloroprene Continuous polymerization of chloroprene

1983-11-30

1985-06-04

Henderson, Christopher A.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526225, 526295, C08F 3618, C08F 2020

Patent

active

045215766

ABSTRACT:
A process for the production of storable polychloroprene having reduced tackiness on mixing rolls by the continuous polymerization of chloroprene and, optionally, up to 50%, by weight, of a monomer copolymerizable with chloroprene in aqueous alkaline emulsion in the presence of emulsifiers and radical initiators at temperatures of from 0.degree. to 70.degree. C., followed by isolation, characterized in that from 90 to 150 parts, by weight, of water, from 2.5 to 4.0 parts, by weight of a potassium salt of disproportionated abietic acid (based on acid), from 0.3 to 1.0 parts, by weight, of a condensation product of naphthalene sulphonic acid and formaldehyde and from 0.2 to 1.5 parts, by weight, of potassium hydroxide, all the quantities being based on 100 parts, by weight, of monomer, are used for the polymerization reaction.

REFERENCES:
patent: 3651037 (1972-03-01), Snow, Jr.
patent: 3651038 (1972-03-01), Snow, Jr.
patent: 3838140 (1974-09-01), Mayer-Mader
patent: 3890261 (1975-06-01), Fitzgerald
patent: 3981854 (1976-09-01), Kelley
patent: 4064337 (1977-12-01), Uraneck
patent: 4245072 (1981-01-01), Uraneck
Rubber Chem. & Tech. 49, pp. 650, 651; 670-673.

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