B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
402/632, 252/95
B01J 23/26 (2006.01) C08F 10/00 (2006.01) C08F 10/02 (2006.01) C08F 110/02 (2006.01)
Patent
CA 1177051
Abstract of the Disclosure An improved process for the preparation of a catalyst for the polymerization of ethylene, and an improved process for preparing an ethylene polymer therewith. An improved supported chromium-containing catalyst is prepared by reacting (1) a chromium chelate or a vanadyl chelate of a 1,3-diketo compound, separately or jointly with (3) an organometallic compound of a metal from Group II or III of th periodic system, jointly contacting the resulting inorganic supporting material so as to deposit such reaction products thereon, whereafter the supporting material containing the reaction products is heated in a non-reducing atmosphere at a temperature of between 200 and 1200°C. The 1,3-diketo compounds of (1) and (2) are the same or different, and have the formula Image wherein R1, R2 and R3 are the same or different, R1 and R3 being an alkyl group of 1-10 carbon atoms, and R2 being selected from the group consisting of an alkyl group with 1-10 carbon atoms and a hydrogen atom. The catalyst so prepared can be used either alone, or together with an organo0metallic a compound of a metal group II or III of the periodic system, in the polymerization of polyethylene or in the copolymerization of polyethylene with up to 15 mole percent of one or more -alkenes having 3 to 15 carbon atoms.
376923
Nooijen Godefridus A.h.
Van de Leemput Lambertus J.m.a.
Van Der Loo Hendrikus W.
Fetherstonhaugh & Co.
Stamicarbon B.v.
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