KR930019711A - Olefin Polymerization Method to Produce Copolymer - Google Patents

Abstract

Under polymerization conditions: at least one trialkylaluminum promoter, at least one alpha-olefin, having at least three carbon atoms, having at least three carbon atoms, and at least one comonomer, at least one aluminum halide, at least At least one metal compound and a salt compound of at least one metal compound selected from the group consisting of one electron donor, the metal being chromium, hafnium, molybdenum, niobium, tantalum, titanium, tungsten, vanadium, zirconium, and mixtures thereof At least one component is finely pulverized a salt compound selected from the group consisting of barium, beryllium, calcium, magnesium, strontium, zinc and mixtures thereof to produce a pulverized solid, and then dual activation of the pulverized solid Use in contact with a catalyst prepared in a manner consisting of application to the extraction step Method consists in producing the copolymer in productivity levels of the copolymer at least 700g per g catalyst.

Description

Olefin Polymerization Method to Produce Copolymer

Since this is an open matter, no full text was included.

Claims (17)

Under polymerization conditions, (A) at least one trialkylaluminum promoter, (B) at least one alpha-olefin and at least one comonomer having at least five carbon atoms and having a methyl branch at the 3-position (C) ( a) at least one aluminum halide compound, (b) at least one electron host compound, (c) at least one metal that is chromium, hafnium, molybdenum, niobium, tantalum titanium, tungsten, vanadium, zirconium, or mixtures thereof A halide compound, and (d) at least one salt compound, wherein the molar ratio of halide compound to metal halide compound is 1-5, the molar ratio of electron donor compound to metal halide compound is 1-10, Molar ratio of the salt compound to the metal halide compound is 8-80) to produce a pulverized solid, which is then subjected to at least two activation-extraction steps. An olefin polymerization process for producing a copolymer, the method comprising contacting a catalyst prepared by a method consisting of. The process of claim 1, wherein the polymerization conditions comprise a polymerization temperature of about 60 ° C.-120 ° C., a reactor residence time of about 0.1-1 hour-4 hours, and a sufficient amount of hydrogen charged to the reactor to facilitate polymerization. How to be. The process of claim 2 wherein the polymerization temperature is about 90 ° C.-110 ° C. The process of claim 2, wherein the reactor residence time is about 0. 25 hours-3 hours. The method of claim 1, wherein the comonomer is added incrementally during the reactor residence time. The method of claim 1, wherein the comonomer is added continuously during the reactor residence time. The method of claim 1, wherein the aluminum halide compound is aluminum trichloride. The method of any one of claims 1-4, wherein the electron donor compound is ethylbenzoate, methoxybenzene, or a mixture thereof. 5. The method of claim 1, wherein the salt compound consists of magnesium. 10. The method of claim 9, wherein said salt compound is magnesium dichloride. The method of claim 1, wherein the trialkylaluminum promoter is trimethylaluminum, triethylaluminum, triisobutylaluminum, or a mixture thereof. The method of claim 1, wherein the alpha-olefin is 3-methyl-1butene, 3-methyl-1-pentene or a mixture thereof. 5. The method of claim 1, wherein the at least one metal halide is titanium halide. The method of claim 13, wherein the aluminum / titanium molar ratio is about 10-60. The method of claim 13, wherein said titanium halide is titanium tetrachloride. The method of claim 13, wherein, before any catalyst removal process, the resulting copolymer contains up to 27 parts by weight per million titanium. The process according to claim 1, wherein the copolymer is produced at a productivity level of at least 700 g of copolymer per g of catalyst used. ※ Note: The disclosure is based on the initial application.