Catalyst for olefinic polymerization

Details Catalyst for olefinic polymerization Catalyst for olefinic polymerization

1982-01-28

1983-07-05

Smith, Edward J.

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

252429C, 526119, 526125, 526139, 526140, 526141, 526142, 526151, 526351, 526906, C08F 402, C08F 1000

Patent

active

043917380

ABSTRACT:
A new improved catalyst system for alpha-olefin type polymerizations includes a metal alkyl compound selected from the group consisting of R.sub.2 WY or R.sub.3 W and an organomagnesium compound R'MgX in combination with a Group IVB-VIII transition metal compound. The improved catalyst system provides both increased polymerization activity and polymers having a high degree of isotactic stereoregularity.

REFERENCES:
patent: 3113115 (1963-12-01), Ziegler et al.
patent: 3238146 (1966-03-01), Hewett et al.
patent: 3880817 (1975-04-01), Van den Berg

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