Olefin polymerization catalyst

Details Olefin polymerization catalyst Olefin polymerization catalyst

1981-08-28

1983-08-23

Smith, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252429B, 526140, 526142, 526153, 526159, 526904, C08F 234, C08F 1006

Patent

active

044004940

ABSTRACT:
A propylene polymerization catalyst comprises (a) a titanium-containing component formed by reducing titanium tetrachloride with an aluminum alkyl, optionally contacting the resulting reduced solid with a pretreatment amount of alpha-olefin monomer under polymerization conditions, and reacting the resulting product with a Lewis base complexing agent and additional titanium tetrachloride, and (b) an alkyl aluminum halide having a halogen/aluminum atomic ratio between 0.89 and 0.98 and preferably between 0.92 and 0.98.

REFERENCES:
patent: 3960765 (1976-06-01), Shiga et al.
patent: 4258161 (1981-03-01), Kakogawa et al.
patent: 4295991 (1981-10-01), Wristers
patent: 4324693 (1982-04-01), Arzoumanidis et al.

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