Preparation of highly reactive polyisobutenes

Details Preparation of highly reactive polyisobutenes Preparation of highly reactive polyisobutenes

1992-06-22

1994-02-15

Teskin, Fred

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 64, 526209, 526210, 526212, 5263487, 585510, 585525, C08F 414, C08F 1010

Patent

active

052868230

ABSTRACT:
A process for preparing highly reactive polyisobutenes with a content of terminal vinylidene groups of more than 80 mol % and an average molecular weight of 500-5000 Dalton by the cationic polymerization of isobutene or isobutene-containing hydrocarbon feeds in liquid phase with the aid of boron trifluoride as catalyst and at from 0.degree. C. to -60.degree. C., comprises polymerizing in the presence of secondary alcohols with 3-20 carbon atoms and/or ethers with 2-20 carbon atoms.

REFERENCES:
patent: 3024226 (1962-03-01), Nolan et al.
patent: 3166546 (1965-01-01), Nolan et al.
patent: 4152499 (1979-05-01), Boerzel et al.
patent: 4227027 (1980-10-01), Booth et al.
patent: 5068490 (1991-11-01), Eaton
Polyisobutylen und Isobutylen-Mischpolymerisate; pp. 77-104; H. Guterbock Springer, Berlin 1958.
Symposium No. 56, 191 (1976); Puskas et al., J. Polymer Sci.

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