Promoters in the polymerization of monovinyl-aromatic compounds

Details Promoters in the polymerization of monovinyl-aromatic compounds Promoters in the polymerization of monovinyl-aromatic compounds

1976-06-14

1978-01-10

Hamrock, William F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260878B, 260880R, 260880B, 260885, 526 29, 526 476, 526 49, 526 53, 526 55, 526173, C08F29300, C08F29704

Patent

active

040679292

ABSTRACT:
1,1-DIALKYLETHYLENES, SUCH AS ISOBUTENE, PROMOTE THE PRIMARY LITHIUM INITIATED POLYMERIZATION OF MONOVINYL-AROMATIC COMPOUNDS, SUCH AS STYRENE, EITHER IN HOMOPOLYMERIZATIONS, OR IN THE FORMATION OF A-B-A block copolymers or (A-B).sub.a Z radial block copolymers, such as by sequential monomer addition with conjugated dienes.

REFERENCES:
patent: 2802806 (1957-08-01), Doak
patent: 3030346 (1962-04-01), Cooper
patent: 3551522 (1970-12-01), Miles
patent: 3631006 (1971-12-01), Hawkins
patent: 3993853 (1976-11-01), Selman et al.
Org. Chem. of Syn. High Polymers by Lenz, pp. 412-413; Interscience Pub., 1967.

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