Living polymerization of olefins to produce copolymer

Details Living polymerization of olefins to produce copolymer Living polymerization of olefins to produce copolymer

1993-10-15

1995-06-27

Seidleck, James J.

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

Synthetic resins

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

525319, 525245, C08F29300, C08F29700, C08F 1010

Patent

active

054281113

ABSTRACT:
The present invention provides a process for the living polymerization of aromatic, preferably styrenic monomers initiated from a living polyolefin, particularly polyisobutylene, chain end and thereby provides an efficient method for the preparation of block copolymers having polyolefin mid-blocks and styrenic end blocks. Polyisobutylene mid blocks and styrenic end blocks comprising para-methylstyrene, alpha-methylstyrene, indene and the like are preferred.

REFERENCES:
patent: 4276394 (1981-06-01), Kennedy et al.
patent: 4943616 (1990-06-01), Mishara
patent: 4946899 (1990-08-01), Kennedy et al.
patent: 5219948 (1993-06-01), Storey
Kennedy, et al. J. Polym. Sci. Polym. Chem. Ed. vol. 18, 1539-46 (1980).

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