Catalyst and process for the manufacture of polyethylene

Details Catalyst and process for the manufacture of polyethylene Catalyst and process for the manufacture of polyethylene

1976-05-05

1977-06-14

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, 252429C, 252441, 526140, 526142, 526352, 526905, C08F 466, C08F 1002

Patent

active

040298647

ABSTRACT:
Improved catalyst and method for the manufacture of polyethylene comprising a catalyst based on a solid substance containing titanium, magnesium and chlorine activated by aluminum alkyls or reaction products of dialkyl aluminum hydrides with diolefins having from 4 to 20 carbon atoms, and its use in the manufacture of polyethylene where said solid substance is produced by (1) reacting metallic magnesium with at least 2 mols of allyl chloride and at least 1.75 mols of a di-lower alkyl ether, per gram-atom of magnesium at a temperature between about 30.degree. C and about 100.degree. C, (2) aging the solid reaction product for at least 10 hours at a temperature between about 30.degree. C and about 140.degree. C, (3) treating the solid reaction product either together, or subsequent to the aging step, with at least 0.2 mols of a di-lower alkyl sulfite, per gram-atom of magnesium, (4) reacting the aged and treated solid reaction product with at least 0.5 mols of

REFERENCES:
patent: 3801558 (1974-04-01), Fletcher et al.
patent: 3878124 (1975-04-01), Durand et al.

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