Catalysts for the polymerization of olefins

Details Catalysts for the polymerization of olefins Catalysts for the polymerization of olefins

1981-01-15

1986-09-23

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

502113, 502118, 502134, 526121, 526122, 526124, 526125, 526352, 526906, C08F 402, C08F 1002

Patent

active

046136550

ABSTRACT:
New catalysts for the polymerization of olefins and more particularly of ethylene and mixtures thereof with higher alpha-olefins and/or diolefins, are disclosed. The catalysts are prepared by mixing (a) a hydride or an organo-metallic compound of a metal belonging to Groups I, II or III of the Mendelyeev Periodic Table with (b) the product obtained by contacting a titanium compound (1) with a mixture of an anhydrous magnesium halide (2) in a particular active form and an anhydrous compound of a metal belonging to Group I or II of said Periodic Table, (3). In the particular active form to which it is converted, during or prior to the contacting the anhydrous magnesium halide is characterized in that, in its X-ray spectrum, the diffraction line which is most intense in the X-ray spectrum of the normal, inactive magnesium halide shows a decreased intensity, and/or the active magnesium halide has a surface area greater than 3 m.sup.2 /g.

REFERENCES:
patent: 2981725 (1961-04-01), Luft et al.
patent: 3085999 (1963-04-01), Tung
patent: 3644318 (1972-02-01), Diedrich et al.
patent: 3850842 (1974-11-01), Longi et al.
patent: 3883492 (1975-05-01), Delbouille et al.
patent: 4056668 (1977-11-01), Berger et al.
patent: 4298718 (1981-11-01), Mayr et al.

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