PROCESS FOR MAKING A SOLID CATALYST COMPONENT FOR ETHYLENE POLYMERIZATION AND COPOLYMERIZATION
First Claim
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1. A process for preparing a solid catalyst component suitable for producing polyethylene and its copolymers, said process comprising:
- (a) forming a first product by contacting a dehydrated support having hydroxyl groups with a magnesium compound having the general formula MgR1R2, wherein R1 and R2 are the same or different and are independently selected from the group comprising an alkyl group, alkenyl group, alkadienyl group, aryl group, alkaryl group, alkenylaryl group and alkadienylaryl group;
(b) contacting the first product with modifying compounds (A), (B) and (C), to form a second product, wherein;
(A) is at least one compound selected from the group consisting of carboxylic acid, carboxylic acid ester, ketone, acyl halide, aldehyde and alcohol;
(B) is a compound having the general formula R11f(R12O)gSiXh, wherein f, g and h are each integers from 0 to 4 and the sum of f, g and h is equal to 4 with a proviso that when h is equal to 4 then modifying compound (A) is not an alcohol, Si is a silicon atom, O is an oxygen atom, X is a halide atom and R11 and R12 are the same or different and are independently selected from the group comprising an alkyl group, alkenyl group, alkadienyl group, aryl group, alkaryl group, alkenylaryl group and alkadienylaryl group;
(C) is a compound having the general formula (R13O)4M, wherein M is a titanium atom, a zirconium atom or a vanadium atom, O is an oxygen atom and R13 is selected from the group comprising an alkyl group, alkenyl group, alkadienyl group, aryl group, alkaryl group, alkenylaryl group and alkadienylaryl group; and
(c) contacting the second product with a titanium halide compound having the general formula TiX4, wherein Ti is a titanium atom and X is a halide atom, to form the solid catalyst component.
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Abstract
The present invention relates to a process for preparing a solid catalyst component suitable for producing polyethylene and its copolymers, said process comprising the steps of: (a) contacting a dehydrated support having hydroxyl groups with a magnesium compound having the general formula MgR1R2; (b) contacting the product obtained in step (a) with modifying compounds (A), (B) and (C), wherein: (A) is at least one compound selected from the group consisting of carboxylic acid, carboxylic acid ester, ketone, acyl halide, aldehyde and alcohol; (B) is a compound having the general formula R11f(R12O)gSiXh, (C) is a compound having the general formula (R13O)4M, and (c) contacting the product obtained in step (b) with a titanium halide compound having the general formula TiX4, wherein Ti is a titanium atom and X is a halide atom. The invention also relates to a solid catalyst component obtainable by said process. The invention further relates to a process for producing polyethylene and its copolymers in the presence of the solid catalyst component and a co-catalyst.
10 Citations
19 Claims
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1. A process for preparing a solid catalyst component suitable for producing polyethylene and its copolymers, said process comprising:
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(a) forming a first product by contacting a dehydrated support having hydroxyl groups with a magnesium compound having the general formula MgR1R2, wherein R1 and R2 are the same or different and are independently selected from the group comprising an alkyl group, alkenyl group, alkadienyl group, aryl group, alkaryl group, alkenylaryl group and alkadienylaryl group; (b) contacting the first product with modifying compounds (A), (B) and (C), to form a second product, wherein; (A) is at least one compound selected from the group consisting of carboxylic acid, carboxylic acid ester, ketone, acyl halide, aldehyde and alcohol; (B) is a compound having the general formula R11f(R12O)gSiXh, wherein f, g and h are each integers from 0 to 4 and the sum of f, g and h is equal to 4 with a proviso that when h is equal to 4 then modifying compound (A) is not an alcohol, Si is a silicon atom, O is an oxygen atom, X is a halide atom and R11 and R12 are the same or different and are independently selected from the group comprising an alkyl group, alkenyl group, alkadienyl group, aryl group, alkaryl group, alkenylaryl group and alkadienylaryl group; (C) is a compound having the general formula (R13O)4M, wherein M is a titanium atom, a zirconium atom or a vanadium atom, O is an oxygen atom and R13 is selected from the group comprising an alkyl group, alkenyl group, alkadienyl group, aryl group, alkaryl group, alkenylaryl group and alkadienylaryl group; and (c) contacting the second product with a titanium halide compound having the general formula TiX4, wherein Ti is a titanium atom and X is a halide atom, to form the solid catalyst component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A process for preparing a solid catalyst component suitable for producing polyethylene and its copolymers, said process comprising:
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(a) forming a first product by contacting a dehydrated support having hydroxyl groups with a magnesium compound having the general formula MgR1R2, wherein R1 and R2 are the same or different and are independently selected from the group comprising an alkyl group, alkenyl group, alkadienyl group, aryl group, alkaryl group, alkenylaryl group and alkadienylaryl group; (b) contacting the first product with modifying compounds (A), (B) and (C), to form a second product, wherein; (A) is at least one compound selected from the group consisting of carboxylic acid, carboxylic acid ester, ketone, acyl halide, aldehyde and alcohol; (B) is a compound having the general formula R11f(R12O)gSiXh, wherein f, g and h are each integers from 0 to 4 and the sum of f, g and h is equal to 4 with a proviso that when h is equal to 4 then modifying compound (A) is not an alcohol, Si is a silicon atom, O is an oxygen atom, X is a halide atom and R11 and R12 are the same or different and are independently selected from the group comprising an alkyl group, alkenyl group, alkadienyl group, aryl group, alkaryl group, alkenylaryl group and alkadienylaryl group; (C) is a compound having the general formula (R13O)4M, wherein M is a titanium atom, a zirconium atom or a vanadium atom, O is an oxygen atom and R13 is selected from the group comprising an alkyl group, alkenyl group, alkadienyl group, aryl group, alkaryl group, alkenylaryl group and alkadienylaryl group; and (c) contacting the second product with a titanium halide compound having the general formula TiX4, wherein Ti is a titanium atom and X is a halide atom, to form the solid catalyst component; wherein the molar ratio of Mg to hydroxyl groups is from 0.01 to 10; wherein the molar ratio of compound (A) to Mg is from 0.01 to 10; wherein the molar ratio of compound (B) to Mg is from 0.01 to 5; wherein the molar ratio of compound (C) to Mg is from 0.01 to 5; and wherein the molar ratio of titanium halide compound to Mg is from 0.01 to 10.
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Current AssigneeSaudi Basic Industries Corporation (Government of Saudi Arabia)
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Original AssigneeSaudi Basic Industries Corporation (Government of Saudi Arabia)
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InventorsMoman, Akhlaq, Aburaqabah, Atieh, Al-Obaid, Abdullah Mohammed, Wajeeh, Moughrabiah, Habibi, Salaheldin
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Granted Patent
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Time in Patent OfficeDays
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Field of Search
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US Class Current526/183
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CPC Class CodesC08F 10/02 EtheneC08F 110/02 EtheneC08F 210/08 ButenesC08F 210/16 Copolymers of ethene with a...C08F 2500/12 Melt flow index or melt flo...C08F 2500/18 Bulk densityC08F 4/50 selected from alkaline eart...C08F 4/52 selected from boron, alumin...C08F 4/6565 and magnesium or compounds ...
