Process for the sulfonation of an elastomeric polymer

Details Process for the sulfonation of an elastomeric polymer Process for the sulfonation of an elastomeric polymer

1984-07-02

1985-07-30

Lipman, Bernard

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

5253318, 5253329, 5253331, 525344, C08F 836

Patent

active

045323020

ABSTRACT:
A continuous process for sulfonating elastomeric polymers to form neutralized sulfonated elastomeric polymers with improved physical properties includes the steps of; (a) contacting a cement of an elastomeric polymer with a sulfonating agent in a staged reaction vessel for a sufficient period of time at a temperature of about -50.degree. C. to about +100.degree. C. to form an unneutralized sulfonated elastomeric polymer; (b) continuously transferring the cement of the unneutralized sulfonated elastomeric polymer to a neutralization vessel; (c) continuously adding a quenching agent and neutralizing agent to the cement of the unneutralized sulfonated elastomeric polymer in a staged neutralization vessel wherein the sulfonated cement is quenched and the neutralization agent reacts with the unneutralized sulfonated polymer to form the neutralized sulfonated elastomeric polymer; and (d) isolating said neutralized sulfonated elastomeric polymer.

REFERENCES:
patent: 2877213 (1959-03-01), Eichhorn
patent: 3836511 (1974-09-01), O'Farrell et al.
patent: 4077933 (1978-03-01), Burton et al.
patent: 4119616 (1978-10-01), O'Farrell et al.
patent: 4321340 (1982-03-01), Klein et al.

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