Polymerization process of optically active polymer and catalyst

Details Polymerization process of optically active polymer and catalyst Polymerization process of optically active polymer and catalyst

1983-03-03

1984-10-23

Garvin, Patrick

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

502156, 502157, 502167, 526180, 526181, 526187, 526189, C08F 446, C08F 448

Patent

active

044789530

ABSTRACT:
An optically active polymer is obtained by polymerizing a vinyl monomer in the presence of a catalyst which comprises an asymmetric ligand compound of the formula (I) or (II): ##STR1## in which R.sub.1 and R.sub.4 each are ##STR2## R.sub.2, R.sub.3, R.sub.5, R.sub.6, R.sub.7 and R.sub.8 each are an alkyl group having 1 to 10 carbon atoms; X is hydrogen, an alkyl group having 1 to 10 carbon atoms or a halogen; and n is a number of 1 to 4; and an anionic initiator to form a complex with said ligand compound.

REFERENCES:
patent: 2751426 (1956-06-01), Closson et al.
patent: 3668263 (1972-06-01), Morrison et al.
patent: 4247418 (1981-01-01), Halasa et al.

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