Block copolymers of Ziegler-Natta polymerized and anionically po

Details Block copolymers of Ziegler-Natta polymerized and anionically po Block copolymers of Ziegler-Natta polymerized and anionically po

1983-06-24

1984-10-30

Briggs, Sr., Wilbert J.

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

Synthetic resins

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

525250, 525266, 525268, 525314, 525323, 525324, C08F29704, C08F29706

Patent

active

044800754

ABSTRACT:
Block copolymers are prepared by using two successive and different catalytic processes, a Ziegler-Natta type polymerization followed by a conventional anionic polymerization.

REFERENCES:
patent: 3231635 (1966-01-01), Holden et al.
patent: 3632678 (1972-01-01), Ehrig et al.
patent: 3739042 (1973-06-01), Chu et al.
patent: 3851015 (1974-11-01), Agouri et al.
patent: 3949016 (1976-04-01), Agouri et al.
P. Cohen, J. J. M. Abadie, F. Schue and D. H. Richards, "Block Copolymers Synthesis via Anionic to Ziegler-Natta Transformation Reaction", Oct. 1981, pp. 1316-1319, Polymer Communications.
D. H. Richards, "Catalyst Systems", Sep. 1980, The British Polymer Journal, vol. 12.

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