Ziegler type catalyst system

Details Ziegler type catalyst system Ziegler type catalyst system

1979-03-07

1980-09-23

Garvin, Patrick

Compositions

Preservative agents

Anti-oxidants or chemical change inhibitants

526139, 526140, 526141, 526142, 526153, C08F 462, C08F 464, C08F 468, C08F 470

Patent

active

042241812

ABSTRACT:
A new improved Ziegler type catalyst system for alpha-olefin type polymerization includes R'.sub.3 Y or R'.sub.2 YX and mixtures thereof, at least one Group IVB -VIII transition metal halide and an alkyl metal compound selected from R'.sub.2 YNR.sub.2 and R'XYNR.sub.2, wherein Y is Al, Ga or In and at least one Lewis base. The improved catalyst system provides increased polymerization activity without significantly affecting the crystallinity of the polymer.

REFERENCES:
patent: 3345351 (1967-10-01), McCall et al.
patent: 4064069 (1977-12-01), Ueno et al.
patent: 4094818 (1978-06-01), Langer
patent: 4145313 (1979-03-01), Langer

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