Olefine polymerisation process and catalyst

Details Olefine polymerisation process and catalyst Olefine polymerisation process and catalyst

1974-12-04

1979-01-23

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, 526128, 526140, 526141, 526142, 526351, C08F 466, C08F 1006

Patent

active

041362438

ABSTRACT:
An olefine polymerisation catalyst comprises a titanium trichloride component of high surface area, an organo-metallic component, a Lewis Base component and optionally a polyene. The TiCl.sub.3 component which may have a high porosity is conveniently obtained by the reaction of TiCl.sub.4 and an organo-aluminium compound, treating the reaction product with a complexing agent and then contacting this product with TiCl.sub.4. The organo-metallic component is preferably aluminium triethyl, the Lewis Base component hexamethylphosphoric triamide and the polyene is cycloheptatriene. This system has high polymerisation activity combined with good stereospecificity. Polypropylene can be obtained in high yield thereby giving low catalyst residues and the polymer has a high stiffness modulus.

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patent: 3752797 (1973-08-01), Gordon et al.
patent: 3984350 (1976-10-01), Karayannin et al.

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