Polymerization process of optically active polymer and catalyst therefor
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United States of America Patent
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Oct 23, 1984
Grant Date -
N/A
app pub date -
Mar 3, 1983
filing date -
Mar 9, 1982
priority date (Note) -
Expired
status (Latency Note)
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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.
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