Method of preparing allyl-terminated polyisobutylene

Details Method of preparing allyl-terminated polyisobutylene Method of preparing allyl-terminated polyisobutylene

1986-10-16

1988-07-19

Schofer, Joseph L.

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

Synthetic resins

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

525249, 525251, 525288, C08F27500

Patent

active

047586311

ABSTRACT:
The invention relates to a method of preparing allyl-terminated polyisobutylene (PIB) by allylation with allyltrimethylsilane of tertiary chloro-capped PIB by electrophilic substitution. The synthesis begins with the BCl.sub.3, catalyzed mono- or oligo-tertiary chloride "inifer" initiated polymerization of isobutylene, followed in the same reaction vessel by the addition of hexane, allyltrimethylsilane, and TiCl.sub.4.

REFERENCES:
patent: 3830872 (1974-08-01), Schrage et al.
patent: 4276394 (1981-06-01), Kennedy et al.
patent: 4342849 (1982-08-01), Kennedy
patent: 4529778 (1985-07-01), Shannon
patent: 4532061 (1985-07-01), Loveless et al.
patent: 4593071 (1986-06-01), Keogh
patent: 4661552 (1987-04-01), Kallenbach

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