Process for sulfonating unsaturated elastomers using acyl sulfat

Details Process for sulfonating unsaturated elastomers using acyl sulfat Process for sulfonating unsaturated elastomers using acyl sulfat

1974-09-30

1978-10-10

Henderson, Christopher A.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

260DIG31, 526 20, 526 40, 526 522, C08F 836

Patent

active

041196163

ABSTRACT:
A process for sulfonating unsaturated elastomers which comprises sulfonating an olefinically unsaturated elastomer using as the sulfonating agent an acyl sulfate. The products produced thereby have improved properties over those sulfonated elastomers prepared by prior art methods. The preferred acyl sulfate is acetyl sulfate. The sulfonated elastomers of this invention are useful as films, adhesives and for other general purpose rubber uses. Especially advantageous properties are obtained when the sulfonic acid polymer is neutralized with ethylamine.

REFERENCES:
patent: 2031929 (1936-02-01), Breuers
patent: 2962454 (1960-11-01), McRae
patent: 3205285 (1965-09-01), Turbak
patent: 3396136 (1968-08-01), Dickerson
patent: 3642728 (1972-02-01), Canter
patent: 3836511 (1974-09-01), O'Farrell
patent: 3847854 (1974-11-01), Canter
Gilbert, E. E., Sulfonation & Related Reactions, Interscience Publ., N.Y (1965), pp. 22, 23, 52.

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