Abstract: 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 of a 1,3-diketo compound and (2) a vanadium chelate or a vanadyl chelate of a 1,3-diketo compound, separately or jointly with (3) an organometallic compound of an element from Group II or III of the periodic system, jointly contacting the resulting reaction products of (1) and (2) with (3) with an inert 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.degree. and 1200.degree. C. The 1,3-diketo compounds of (1) and (2) are the same or different, and have the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are the same or different, R.sub.1 and R.sub.

Abstract: This invention relates to a process for forming a catalyst containing chromium and vanadium, by depositing chromium- and vanadium compounds on an inert, particulate inorganic support. The chromium is deposited as a complex of a chromium compound that may be a chromium-1,3-diketocompound with a Group II or III element hydrocarbyl. The vanadium compound can be but need not be a complex of a vanadium compound with a Group II or III element. Not more than one of the chromium- and a vanadium compounds may be the chelate of a 1.3-diketo-compound, whether or not complexed with a Group II or III element hydrocarbyl. The process for polymerizing an olefin using the catalysts of the invention is also disclosed.

Abstract: Process for preparing and treating a chromium-containing catalyst so that when the catalyst is activated the risk of explosion is substantially reduced. The catalyst comprises a complex of chromium and optionally other transition metal complexes reacted with one or more organometallic compounds of a metal of group II or III of the periodic table, which metal contains hydrocarbyl groups of 1-20 carbon atoms. The reaction product is applied to an inert inorganic support to form the catalyst component which is deactivated by treatment with oxygen or an alcohol to modify or replace residual hydrocarbyl groups. The catalyst component may be activated to form the catalyst by heating in the range 200.degree.-1200.degree. C. The catalyst is used to catalyze a polymerization of alpha-olefins.

Abstract: Disclosed is a catalyst comprising an inert, particulate, inorganic support onto which has been deposited a group II or III metal hydrocarbyl complex of chromium and at least one additional complex or compound of a transition metal selected from the group consisting of nickel, molybdenum, and titanium. The catalyst is activated by heating in the range 200.degree. C.-1200.degree. C. Also disclosed is the process for the polymerization of .alpha.-olefins in the presence of said catalyst.

Abstract: 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 of a 1,3-diketo compound and (2) a vanadium chelate or a vanadyl chelate of a 1,3-diketo compound, separately or jointly with (3) an organometallic compound of an element from Group II or III of the periodic system, jointly contacting the resulting reaction products of (1) and (2) with (3) with an inert 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.degree. and 1200.degree. C. The 1,3-diketo compounds of (1) and (2) are the same or different, and have the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are the same or different, R.sub.1 and R.sub.

Abstract: This invention discloses a process of preparing a catalyst component for the polymerization of .alpha.-olefins. An organomagnesium compound is deposited on an inert inorganic support, such as silica, and the product obtained is heated at a temperature of 300.degree.-1000.degree. C. in a non-reducing atmosphere. The support is then combined with one or more compounds of titanium and/or vanadium. The process of polymerizing .alpha.-olefins with the catalysts of this invention is also disclosed.

Abstract: 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 of a 1,3-diketo compound and (2) a vanadium chelate or a vanadyl chelate of a 1,3-diketo compound, separately or jointly with (3) an organometallic compound of an element from Group II or III of the periodic system, jointly contacting the resulting reaction products of (1) and (2) with (3) with an inert 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.degree. and 1200.degree. C. The 1,3-diketo compounds of (1) and (2) are the same or different, and have the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are the same or different, R.sub.1 and R.sub.

Abstract: Process for the preparation of a porous, pure silica which is particularly suitable as a catalyst support for a chromium-oxide catalyst used in polymerizing of olefins. The process comprises the steps of converting a silicon-halogen compound to a silica and then admixing with water to form a silica gel. The gel is then spray-dried to achieve the required particle size and pore volume.The silica can then be made into a catalyst by placing on the support a chromium compound and then heating in a non-reducing atmosphere.

Abstract: Process for the preparation of a porous, pure silica which is particularly suitable as a catalyst support for a chromium-oxide catalyst used in polymerizing of olefins. The process comprises the steps of converting a silicon-halogen compound to a silica and then admixing with water to form a silica gel. The gel is then dried and ground to a predetermined particle size. The silica can then be made into a catalyst by placing on the support a chromium compound and then heating in a non-reducing atmosphere.

Abstract: Process for the preparation of a porous, pure silica which is particularly suitable as a catalyst support for a chromium-oxide catalyst used in polymerizing of olefins. The process comprises the steps of converting a silicon-halogen compound to a silica and then admixing with water to form a silica gel. The gel is then spray-dried to achieve the required particle size and pore volume.The silica can then be made into a catalyst by placing on the support a chromium compound and then heating in a non-reducing atmosphere.

Abstract: Process for the preparation of a porous, pure silica which is particularly suitable as a catalyst support for a chromium-oxide catalyst used in polymerizing of olefins. The process comprises the steps of converting a silicon-halogen compound to a silica and then admixing with water to form a silica gel. The gel is then dried and ground to a predetermined particle size. The silica can then be made into a catalyst by placing on the support a chromium compound and then heating in a non-reducing atmosphere.

Abstract: An improved process and catalyst is described for polymerizing .alpha.-alkenes using a catalyst obtained by reacting a chromium-1,3-diketo complex compound having the general formulaCr(OCR.sub.1 CR.sub.2 CR.sub.3 O).sub.3,with an organometallic compound, of a metal from Group II or III of the Periodic Table, contacting the reaction product with an inert inorganic support material, heating said reaction product on said support at a temperature of between about 200.degree. and 1200.degree. C. in a non-reducing atmosphere, combining the resulting product with an organometal compound of a metal from Group II or III of the Periodic Table. The catalysts are highly active and give high yields of polymer. By a proper selection of the pore volume and the particle size of the catalyst support polyalkenes of improved handling properties are obtained.

Abstract: The invention is directed to new catalysts consisting of a chromium compound and an organometal compound of an element of Group II or III of the periodic system on a carrier, the process for preparing the catalyst and its use in polymerizing 1-alkenes containing 2 to 8 carbon atoms, optionally admixed with at most 10 mole% of at least one other 1-alkene of 2 to 8 carbon atoms.