Polyisobutylene process

Details Polyisobutylene process Polyisobutylene process

1984-09-20

1985-12-10

Gantz, D. E.

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

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

585510, 585518, 585520, 585530, 585531, 585329, C07C 218

Patent

active

045581703

ABSTRACT:
Polyisobutylene is prepared from a mixed C.sub.4 hydrocarbon feedstream using an AlCl.sub.3 --HCl catalyst system wherein the HCl is introduced separately into the feedstream to form organochloride in the feedstream. Polymer product having a very narrow molecular weight distribution is obtained over the Mn range of 700 to 3,000. Dispersants derived from this polyisobutylene exhibit substantially improved performance in lubricating oil compositions.

REFERENCES:
patent: 3119884 (1964-01-01), Allen et al.

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