Polymerization of isobutylene

Details Polymerization of isobutylene Polymerization of isobutylene

1986-07-22

1987-09-01

Pal, Asok

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By addition of entire unsaturated molecules, e.g.,...

526327, 585510, 585520, C07C 208

Patent

active

046910727

ABSTRACT:
The conversion is increased in the preparation of polyisobutylene by polymerization of isobutylene in a polymerization zone at from 0.degree. to -130.degree. C. in the presence of from 0.01 to 1.0% by weight of a boron trifluoride catalyst, from 0.001 to 1.0% by weight of a molecular weight regulator and from 30 to 90% by weight of a low-boiling solvent which is inert under the reaction conditions, by a process in which the content of but-1-ene in the monomeric isobutylene is kept constant at from 1.9 to 2.1, in particular 2.0, % by weight.

REFERENCES:
patent: 2637720 (1955-05-01), Schneider
patent: 2775577 (1956-12-01), Schneider
patent: 2906798 (1959-09-01), Starnes et al.
patent: 2918508 (1959-12-01), Coopersmith et al.
patent: 3129205 (1964-04-01), Rowe et al.
patent: 4391959 (1983-07-01), Fauth et al.
patent: 4605808 (1986-08-01), Samson

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