Process for the preparation of butyl rubber

Details Process for the preparation of butyl rubber Process for the preparation of butyl rubber

1976-11-01

1978-06-20

Michl, Paul R.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 88, 526339, C08F 204

Patent

active

040963209

ABSTRACT:
Butyl rubber is prepared by polymerizing isobutylene and a conjugated diolefin in a liquid reaction medium wherein the temperature is controlled by indirect heat-exchange with boiling ethylene admixed with a gas which is inert towards ethylene, the said boiling ethylene being subjected to a controlled pressure maintained at a value not lower than atmospheric.

REFERENCES:
patent: 2491710 (1949-12-01), Calfee
patent: 2844569 (1958-07-01), Green

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