KR840005466A - Ethylene Polymerization Method - Google Patents

Abstract

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Description

Ethylene Polymerization Method

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Claims (12)

(1) the aluminum halide is reacted with a silicon compound represented by the following general formula (II), and (2) the reaction product is reacted with a Grignard compound represented by the following general formula (III) to form a carrier, (3) the catalyst obtained from (A) a solid catalyst component obtained by contacting the carrier with a titanium compound represented by the following general formula (IV) and an organic aluminum compound represented by the following general formula (I): Ethylene polymerization process characterized by polymerizing ethylene or a mixture of ethylene and at least three carbon atoms of -olefin in the presence of. Wherein R ¹ , R ² , R ³ and R ⁴ are alkyl groups of 1 to 8 carbon atoms, phenyl or aralkyl groups of 7 to 10 carbon atoms, R ⁵ is an alkyl group of 1 to 6 carbon atoms, X ¹ and X ² is a halogen atom, l = 1 and m are 0,1,2 or 3 and n is 1 or 2. The method of claim 1, wherein the reaction of the aluminum halide with the organosilicon compound of general formula (II) is carried out at a temperature of -50 to 100 ° C. for 0.1 to 2 hours using 0.25 to 10 moles of aluminum halide per mole of silicon compound. The method characterized by the above-mentioned inert organic solvent. The method of claim 1 wherein the aluminum halide is aluminum chloride. The compound of claim 1, wherein the organosilicon compound of formula (II) is methyltriethoxysilane, dimethyldiethoxysilane, tetraethoxysilane, phenyltriethoxysilane, tetraisopentoxysilane, or phenyltripentoxy And silane. The reaction product of claim 1, wherein the reaction product of the aluminum halide with the silicon compound of general formula (II) is reacted with 0.05 to 4 moles of Grignard compound of the general formula (III) per mole of silicon compound used to prepare the reaction product. The reaction product is dissolved in an inert organic solvent and a solution of a Grignard compound dissolved in an ether or a mixed solvent of an ether and an aromatic organic solvent is gradually mixed with each other, and the ether is represented by the following general formula (V). Method represented by. R ⁶ -OR ⁷ (V) Wherein R ⁶ and R ⁷ independently represent an alkyl group having 2 to 8 carbon atoms. The method according to claim 1, wherein the Grignard compound of the general formula (III) is magnesium alkyl chloride. The carrier produced by the reaction product of the aluminum halide with the silicon compound of general formula (II) and the Grignard compound of the general formula (III) is a titanium compound of general formula (IV). Before contact treatment, characterized in that the washing with an inert organic solvent. The method of claim 1, wherein the carrier is contacted with at least one mole of titanium compound per mole of Grignard compound used to prepare the carrier. The method according to claim 1, wherein the amount of the organoaluminum compound (B) is in the range of 1 to 1,000 moles per gram atom of titanium contained in the solid catalyst component (A). The method according to claim 1, wherein the organoaluminum compound (B) is diisobutyl aluminum hydride. The process of claim 1 wherein the mixture of ethylene or ethylene and at least 3 carbon atoms of -olefins at a temperature of 30 to 300 ° C. under a pressure of 1 to 3000 kg / cm 2 is substantially water-free and oxygen-free. And polymerizing in a) state. The method according to claim 1, wherein the amount of solid catalyst component (A) in the liquid phase using a liquid hydrocarbon polymerization medium is in the range of 0.0005 to 10 mg atoms as titanium per liter of the polymerization medium and the amount of the organoaluminum compound (B) per liter of the polymerization medium. The polymerization is carried out using a catalyst in an amount in the range of 0.001 to 1,000 mmol. ※ Note: The disclosure is based on the initial application.