KR20080064249A - Catalyst for ultra high molecular weight polyethylene polymerization, method for preparing the same and polymerization method of ultra high molecular weight polyethylene using the same - Google Patents

Abstract

A method for preparing a catalyst for the polymerization of ultrahigh molecular weight polyethylene, a catalyst prepared by the method, a method for polymerizing ultrahigh molecular weight polyethylene by using the catalyst, and the ultrahigh molecular weight polyethylene prepared by the method are provided to improve the polymerization activity and apparent density of the catalyst and to make the distribution of molecular weight be narrow. A method for preparing a catalyst for the polymerization of ultrahigh molecular weight polyethylene comprises the steps of reacting a magnesium alcoholate and a titanium halide to prepare a magnesium support; and reacting the magnesium support, an organometallic compound and an organosilane compound. Preferably the magnesium alcoholate is represented by Mg(OR1)X, wherein R1 is H or a substituted or unsubstituted C1-C20 alkyl group; X is OR2, a halogen atom, (SO4)1/2OH, (CO3)1/2 or (PO4)1/3; and R2 is H or a substituted or unsubstituted C1-C20 alkyl group.

Description

CATALYST FOR ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE POLYMERIZATION, METHOD FOR PREPARING THE SAME AND POLYMERIZATION METHOD OF ULTRA HIGH MOLECULAR WEIGHT POLYETHYLENE USING THE SAME}

The present invention relates to a catalyst for ultra-high molecular weight polyethylene polymerization and to a method for polymerization of ultra-high molecular weight polyethylene, and more particularly, to a titanium solid complex catalyst supported on a support including magnesium for ultra-high molecular weight polyethylene polymerization, a method for preparing the same, and an appearance thereof. The present invention relates to a method for polymerizing ultra-high molecular weight polyethylene having a high density and a narrow particle distribution with a small number of large particles or fine particles.

Ultra high molecular weight polyethylene is a kind of polyethylene resin and refers to polyethylene having a molecular weight of at least 10 ⁶ g / mol or more, and according to ASTM 4020, “when 0.05% is contained in 100 ml of decahydronaphthalene solution, the relative viscosity at 135 ° C. is 2.30 or more. Linear polyethylene ” Ultra-high molecular weight polyethylene has much higher molecular weight than general-purpose polyethylene, so it has excellent characteristics such as rigidity, abrasion resistance, environmental stress uniformity, self-lubrication, chemical resistance, and electrical properties. Polyethylene is a high quality special material obtained from a general-purpose raw material.

Ultra-high molecular weight polyethylene produced through the polymerization process is produced and sold as a powder because the molecular weight is large and can not be pelletized like general purpose polyethylene, the size and distribution of the polymer powder is very important. The polymerization process, the particle distribution of the polymer and the presence or absence of fine particles are important properties of the catalyst.

Many olefin polymerization catalysts and methods based on titanium have been reported, including magnesium and based on titanium. In particular, many methods using magnesium solution are known to obtain the above-mentioned apparently high density olefin polymerization catalyst. In the presence of a hydrocarbon solvent, a magnesium compound is reacted with an electron donor such as an alcohol, an amine, a cyclic ether, and an organic carboxylic acid to obtain a magnesium solution. In the case of using an alcohol, US Pat. , 5,106,807.

In addition, a method of preparing a magnesium supported catalyst by reacting the liquid magnesium solution with a halogen compound such as titanium tetrachloride is well known. Such catalysts provide a high polymer apparent density, but there is a need to improve in terms of the active or hydrogen reactivity of the catalyst. Tetrahydrofuran, a cyclic ether, is described in US Pat. Nos. 4,477,639 and 4,518,706 as solvents of magnesium compounds.

U.S. Patent Nos. 4,847,227, 4,816,433, 4,829,037, 4,970,186, and 5,130,284 react with electron donors, such as magnesium alkoxides and dialkyl phthalates, and titanium chloride compounds to provide excellent polymerization activity. A method for preparing an olefin polymerization catalyst with improved density is described.

U.S. Patent No. 5,459,116 describes a method for producing a supported titanium solid catalyst by contact reaction of a magnesium solution comprising a ester having at least one hydroxy group as an electron donor with a titanium compound. By using this method, a catalyst capable of producing a polymer having excellent polymerization activity and high apparent density can be obtained, but there is room for improvement in terms of the polymer distribution.

As described above, while the production process is simple, it is possible to control the size of the catalyst particles while having a high polymerization activity, in particular, the development of a catalyst for producing ultra-high molecular weight polyethylene with a narrow particle distribution of the polymer is required.

It is an object of the present invention to provide a catalyst for ultra high molecular weight polyethylene polymerization having high catalytic activity, high apparent density of polymerized polymer, and narrow particle distribution of polymer.

In addition, another object of the present invention is to provide a method for polymerizing ultra high molecular weight polyethylene using the ultra high molecular weight polyethylene polymerization catalyst.

The present invention to achieve the above technical problem,

1) reacting magnesium alcoholate with titanium halide to form a magnesium carrier; And

2) reacting the magnesium carrier, the organometallic compound, and the organosilane compound

It provides a method for producing an ultra-high molecular weight polyethylene polymerization catalyst comprising a.

The present invention also provides a catalyst for ultra high molecular weight polyethylene polymerization prepared by the method for preparing a catalyst for ultra high molecular weight polyethylene polymerization.

The present invention also provides an ultrahigh molecular weight polyethylene polymerization method using the ultrahigh molecular weight polyethylene polymerization catalyst.

It will be described in detail below.

In the preparation method of the ultrahigh molecular weight polyethylene polymerization catalyst according to the present invention, the magnesium alcoholate of step 1) may be a compound represented by the following formula (1).

Mg (OR1) X

In Chemical Formula 1,

R1 represents hydrogen or a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms;

X is OR2, halogen _{atoms, (SO 4) 1/2 OH,} (CO 3) 1/2 or (PO ₄₎ shows a _1/3;

R2 represents hydrogen or a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms.

As magnesium alcoholate represented by Formula 1, Mg (OC ₂ H ₅ ) ₂ , Mg (OiC ₃ H ₇ ) ₂ , Mg (OnC ₃ H ₇ ) ₂ , Mg (OnC ₄ H ₉ ) ₂ , Mg (OCH ₃ ) (OC ₂ H ₅ ), Mg (OC ₂ H ₅ ) (OnC ₃ H ₇ ) or Mg (OCH ₃ ) Cl is preferred, Mg (OC ₂ H ₅ ) ₂ , Mg (OiC ₃ H ₇ ) ₂ Or Mg (OnC ₃ H ₇ ) ₂ is more preferred, but is not limited thereto.

The magnesium alcoholate may be used in pure form or in a form attached to the support, and there is no particular limitation on the use form.

In the method for producing a catalyst for ultra-high molecular weight polyethylene polymerization according to the present invention, the magnesium alcoholate of step 1) together with the compound represented by the formula (1), to Group 1, 2, 13 and 14 except magnesium Complex magnesium alcoholate which further contains the element to which it belongs can be used. Such complex magnesium alcoholates are [Mg (OiC ₃ H ₇ ) ₄₂ , [Al ₂ (OiC ₃ H ₇ ) ₈₂ H ₅ ] ₆₂ H ₅ ] ₃₂ (OiC ₄ H ₉ ) ₈₂ (O-sec-C ₄ H ₉ ) ₆ (OC ₂ H ₅ ) can be used, but is not limited thereto.

The composite magnesium alcoholate is a method of reacting two or more different metal alcoholates including magnesium alcoholate in an inactivated hydrocarbon solvent; A method of dissolving magnesium in an alcoholic solution of a metal alcoholate except magnesium alcoholate; Or through a variety of methods, such as dissolving two or more different metals, including magnesium, together in alcohol.

In the method for preparing a catalyst for ultra-high molecular weight polyethylene polymerization according to the present invention, titanium tetrachloride may be used as the titanium halide in step 1).

The molar ratio (Ti / Mg) of titanium halide to magnesium alcoholate is 0.9 to 5, preferably 1.4 to 3.5. If the molar ratio of titanium halide to magnesium alcoholate is less than 0.9, there is a problem that the active site formation of the catalyst is too small. If the molar ratio of titanium is greater than 5, the amount of the titanium halide is too much greater than the amount of titanium that can be bound on the magnesium carrier, thereby causing It is not desirable because it may adversely affect the economics.

In the preparation method of the ultrahigh molecular weight polyethylene polymerization catalyst according to the present invention, the step of forming the magnesium carrier of step 1) may be performed in an inert hydrocarbon solvent.

The inert hydrocarbon solvent may be an aliphatic hydrocarbon such as butane, pentane, hexane, peptane, iso-octane, cyclohexane or methylcyclohexane; Aromatic hydrocarbons such as toluene or xylene; Or a hydrogenated diesel oil fraction or gasoline fraction from which oxygen, sulfur compounds, and water have been removed.

In the method of preparing a catalyst for ultra-high molecular weight polyethylene polymerization according to the present invention, the step of forming the magnesium carrier of step 1) is a titanium halide, for example, TiCl ₃ and magnesium carrier have the same stereostructure, and individual ion distance Since the lattice distances are close to each other, they have favorable conditions for bonding, and when they react, titanium halides are adsorbed on the [100] and [110] axes of the magnesium carrier. The reaction then proceeds further to produce a catalyst activation point.

Such a reaction process can be reacted under a pressure of 0.5 to 50 bar under a temperature range of 20 to 200 ℃. If the reaction temperature is less than 20 ℃ is difficult to form a sufficient carrier, if it exceeds 200 ℃ there is a problem that can form an incomplete carrier by too high energy exchange between the carrier and the reacting material is not preferred. In addition, when the pressure is less than 0.5bar, it is difficult to form a sufficient carrier, and when the pressure exceeds 50bar, the morphology of the carrier is broken so that the particle size becomes uneven when preparing a catalyst, which is not preferable.

In the method for preparing a catalyst for ultra-high molecular weight polyethylene polymerization according to the present invention, the organometallic compound of step 2) may include a metal belonging to Group 1, Group 2 or Group 13.

The organometallic compound may be an organoaluminum compound. Examples thereof are trialkyl aluminum, dialkyl aluminum halides, alkyl aluminum dihalides, aluminum dialkyl halides or alkyl aluminum sesquihalides.

More specifically, the organometallic compound may be Al (C ₂ H ₅ ) ₃ , Al (C ₂ H ₅ ) ₂ H, Al (C ₃ H ₇ ) ₃ , Al (C ₃ H ₇ ) ₂ H, Al ( iC ₄ H ₉ ) ₂ H, Al (C ₈ H ₁₇ ) ₃ , Al (C ₁₂ H ₂₅ ) ₃ , Al (C ₂ H ₅ ) (C ₁₂ H ₂₅ ) ₂ , Al (iC ₄ H ₉ ) (C ₁₂ H ₂₅ ) ₂ , Al (iC ₄ H ₉ ) ₂ H, Al (iC ₄ H ₉ ) ₃ , (C ₂ H ₅ ) ₂ AlCl, (iC ₃ H ₉ ) ₂ AlCl or (C ₂ H ₅ ) ₃ Al ₂ Cl ₃ is more preferred, but is not limited thereto.

The organometallic compound may also be a mixture of organoaluminum compounds. More specifically, it is possible to use organometallic compounds belonging to the group 1, 2 or 13 of the periodic table, in particular mixtures of different organoaluminum compounds.

Examples thereof include a mixture of Al (C ₂ H ₅ ) ₃ and Al (iC ₄ H ₉ ) ₃ ; A mixture of Al (C ₂ H ₅ ) ₃ and (C ₈ H ₁₇ ) ₃ ; A mixture of Al (C ₄ H ₉ ) ₂ H and Al (C ₈ H ₁₇ ) ₃ ; A mixture of Al (iC ₄ H ₉ ) ₃ and Al (C ₈ H ₁₇ ) ₃ ; A mixture of Al (C ₂ H ₅ ) ₃ and Al (C ₁₂ H ₂₅ ) ₃ ; A mixture of Al (iC ₄ H ₉ ) ₃ and Al (C ₁₂ H ₂₅ ) ₃ ; A mixture of Al (C ₂ H ₅ ) ₃ and Al (C ₁₆ H ₃₃ ) ₃ ; Or a mixture of Al (C ₃ H ₇ ) ₃ and Al (C ₁₈ H ₃₇ ) ₂ (iC ₄ H ₉ ).

In particular, it is more preferable to use a chlorine-free compound as the organoaluminum compound. Non-chlorine compounds suitable for the present invention are hydrocarbon radicals having 1 to 6 carbon atoms, preferably Al (iC ₄ H ₉ ) ₃ or Al (iC ₄ H ₉ ) ₂ H and olefins having 4 to 20 carbon atoms, more preferably Is the reaction product of isoprene with aluminum trialkyl or aluminum dialkyl halide. An example that may be mentioned is aluminum isoprenyl.

Other suitable chlorine-free aluminum organic compounds are trialkyl aluminum or general aluminum dialkyl halides having hydrocarbon groups of 1 to 16 carbon atoms, examples of which include Al (C ₂ H ₅ ) ₃ , Al (C ₂ H ₅ ) ₂ H , Al (C ₃ H ₇ ) ₃ , Al (C ₃ H ₇ ) ₂ H, Al (iC ₄ H ₉ ) ₃ , Al (iC ₄ H ₉ ) ₂ H, Al (C ₈ H ₁₇ ) ₃ , Al ( C ₁₂ H ₂₅ ) ₃ , Al (C ₂ H ₅ ) (C ₁₂ H ₂₅ ) _2, and Al (iC ₄ H ₉ ) (C ₁₂ H ₂₅ ) ₂ .

The molar ratio (metal / Ti) of the organometallic compound to the titanium halide is 0.1 to 2, preferably 0.5 to 1.5.

In the method of preparing a catalyst for ultrahigh molecular weight polyethylene polymerization according to the present invention, as the organosilane compound of step 2), a compound represented by the following Chemical Formula 2 may be used.

In Formula 2, R3, R4, R5, and R6 are the same as or different from each other, and each independently hydrogen, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkylene group having 2 to 20 carbon atoms, A substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 30 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 30 carbon atoms.

As the organosilane compound represented by the formula (2), cyclohexylmethyldimethoxysilane, dimethoxydiphenylsilane, methyltriethoxysilane, methyltrichlorosilane, phenyltrimethylsilane, phenyltriethoxysilane, dicyclopentyldimethoxy Silane, phenylmethyldimethoxysilane, vinylmethyldiethoxysilane, vinylmethyldimethoxysilane, diisopropyldimethoxysilane, disecondarybutyldimethoxysilane, dicyclohexyldimethoxysilane, isobutylisopropyldimethoxysilane, iso Butyl secondary butyl dimethoxysilane, isobutyl cyclopentyldimethoxysilane, isopropyl secondary butyldimethoxysilane, isopropylcyclopentyldimethoxysilane, isopropylcyclo silane, dimethyldiisopropeneoxysilane, diphenyldimethoxysilane, Diphenylsilane, dodecyltriethoxysilane, isobutyltriethoxysilane, isobutyltrimethoxysilane, methylcyclopentyldimethoxy This silane is preferred.

The molar ratio (Si / Ti) of the organosilane compound to titanium halide is preferably 0.1 to 120, more preferably 0.1 to 100. If the molar ratio is less than 0.1, there is a problem that it is difficult to see the effect of a narrow molecular weight, if it exceeds 120 there is a problem that can bring a low activity during polymerization because it eliminates the active point of the catalyst is not preferred.

In the method for preparing a catalyst for ultra-high molecular weight polyethylene polymerization according to the present invention, the reaction between the organosilane compound of step 2) and the magnesium carrier of the organometallic compound is followed by first reacting the organometallic compound with a magnesium-containing carrier, and then The organosilane compound may be reacted with the magnesium carrier.

When the catalyst according to the present invention is used for the polymerization of ultra high molecular weight polyethylene, the shape of the catalyst particles is controlled, the polymerization activity is high, and the formation of ultra high molecular weight polyethylene with a narrow molecular weight distribution is possible.

The catalyst according to the invention can also be used with at least one organoaluminum compound, preferably trialkylaluminum, as cocatalyst.

On the other hand, as an example of such a polymerization process of ultra high molecular weight polyethylene, suspension polymerization is carried out in an inert dispersion medium commonly used in Ziegler low pressure processing, for example aliphatic or alicyclic hydrocarbons, butane, pentane, hexane, heptane , Isooctane, cyclohexane and methylcyclohexane may be mentioned as examples of such hydrocarbons. It is also possible to use gasoline fractions which have been deoxygenated, sulfur compounds and water or hydrogenated diesel oil fractions. The gas phase polymerization can be carried out directly or after the prepolymerisation of the catalyst in suspension processing. The molecular weight of the polymer is controlled by the amount of hydrogen.

Hereinafter, the present invention will be described with reference to the following examples, but the scope of the present invention is not limited only to the following examples.

< Example >

< Comparative example  1>

1) Preparation of Catalyst

TiCl _{4 was added} to a hexane suspension of magnesium carrier such that the molar ratio of titanium to magnesium (Ti / Mg) = 0.95 and the reaction mixture was heated to 85 ° C., and the solid precipitate precipitated at room temperature for 5 hours 30 minutes was added to hexane. Wash five times. Triethylaluminum was then reacted at a molar ratio of 0.5. At this time, the Ti ^{3 +} ratio was 40%.

2) polymerization

The polymerization of ethylene was carried out in a 2-liter steel reactor equipped with a stirrer and a temperature controlled jacket.

Was performed. After drying the autoclave in an oven and assembling it in a hot state, nitrogen and vacuum were alternately operated four times to make the reactor into a nitrogen atmosphere. 1,000 ml of n-hexane was used as a hydrocarbon solvent, and ₂ mmol of Al (C ₂ H ₅ ) ₃ was used as a promoter. Polymerization was carried out for 2 hours after putting the hexane 1,000ml into the reactor, the temperature of the reactor was raised to 80 ℃ and the ethylene pressure to the reactor pressure is 128psi. Atmospheric pressure was maintained to continuously supply ethylene to the reactor as ethylene was consumed during the reaction. After the polymerization was completed, the temperature of the reactor was lowered to room temperature, and the resulting polymer was collected and separated, and dried in a vacuum oven at 50 ° C. for at least 4 hours to obtain an ultra high molecular weight polyethylene of white powder.

Polymerization activity (kg polyethylene / g catalyst) was calculated as the weight (kg) ratio of the resulting polymer per gram of catalyst used. The average particle size of the polymer was measured using a laser particle analyzer, and the particle distribution of the polymer was calculated as (d90-d10) / d50. Where d10, d50 and d90 are the particle sizes at 10%, 50% and 90%, respectively, and d50 is defined as the median particle size. The polymerization results are shown in Table 1 below with the apparent density and intrinsic viscosity of the polymer.

Apparent density was measured with a HJ-6010 instrument and intrinsic viscosity was measured using a Ubbelohde viscometer. The molecular weight was calculated using the intrinsic viscosity value. The results calculated using the Margolies equation are shown in Table 1.

< Example  1>

Comparative Example 1, except that cyclohexylmethyldimethoxysilane was added to the catalyst obtained in Comparative Example 1 such that the molar ratio of alkoxysilane to titanium contained in the catalyst (Si / Ti) = 10 was stirred at room temperature for 2 hours. Was performed in the same manner as The ethylene polymerization results are shown in Table 1 below.

< Example  2>

The polymerization was carried out in the same manner as in Example 1, except that phenyltriethoxysilane was used instead of cyclohexylmethyldimethoxysilane in Example 1. The polymerization results are shown in Table 1 below.

< Example  3>

The polymerization was carried out in the same manner as in Example 1, except that phenyltrimethylsilane was used instead of cyclohexylmethyldimethoxysilane in Example 1. The polymerization results are shown in Table 1 below.

< Example  4>

The polymerization was carried out in the same manner as in Example 1, except that methyltriethoxysilane was used instead of cyclohexylmethyldimethoxysilane in Example 1. The polymerization results are shown in Table 1 below.

< Example  5>

The polymerization was carried out in the same manner as in Example 1, except that dimethoxydiphenylsilane was used instead of cyclohexylmethyldimethoxysilane in Example 1. The polymerization results are shown in Table 1 below.

< Example  6>

In Example 1, the polymerization was carried out in the same manner as in Example 1, except that the cyclohexylmethyldimethoxysilane was treated at 70 ° C. instead of reacting at room temperature. The polymerization results are shown in Table 1 below.

< Example  7>

The polymerization was carried out in the same manner as in Example 1, except that cyclohexylmethyldimethoxysilane was added in Example 1 to treat a molar ratio (Si / Ti) = 1 of the alkoxysilane to titanium contained in the catalyst. . The polymerization results are shown in Table 1 below.

< Example  8>

The polymerization was carried out in the same manner as in Example 1, except that cyclohexylmethyldimethoxysilane was added in Example 1 so that the molar ratio of alkoxysilane to titanium contained in the catalyst (Si / Ti) = 100 was added. . The polymerization results are shown in Table 1 below.

< Example  9>

When polymerizing with the catalyst obtained in Comparative Example 1, cyclohexylmethyldimethoxysilane was added to the cocatalyst so that the molar ratio (Si / Ti) = 100 of the alkoxysilane to titanium contained in the catalyst was added to the promoter. It was done in the same way. The ethylene polymerization results are shown in Table 1 below.

Active (kg PE / g cat) Apparent density (g / ml) Intrinsic Viscosity (dl / g) Molecular Weight Particle ratio Comparative Example 1 24.2 0.30 16.4 3,491,334 1.6 Example 1 30.2 0.37 22.1 5,412,513 0.6 Example 2 32.4 0.38 21.6 5,233,649 0.7 Example 3 28.8 0.36 22.5 5,555,588 0.6 Example 4 26.5 0.37 19.5 4,498,581 0.6 Example 5 30.8 0.38 18.1 4,043,603 0.8 Example 6 29.9 0.39 19.4 4,466,083 0.5 Example 7 31.3 0.40 19.6 4,531,079 0.6 Example 8 27.4 0.40 19.7 4,563,578 0.7 Example 9 25.0 0.39 20.4 4,804,397 0.7

As can be seen from the results of Table 1, it can be seen that in Examples 1 to 9 using the organosilane compound according to the present invention, the activity was increased compared to the case of Comparative Example 1. In addition, in Example compared with the comparative example 1, all the apparent density became high, and the intrinsic viscosity became high, resulting in the result which raises molecular weight. Since the particle distribution of the reactants obtained after the polymerization is narrowed, it has the advantage of ensuring fluidity in the physical processing.

The ultrahigh molecular weight polyethylene polymerization catalyst according to the present invention has a high polymerization activity and a high apparent density, and in particular, an ultrahigh molecular weight polyethylene polymer having a narrow molecular weight distribution can be prepared.

Claims (22)

1) reacting magnesium alcoholate with titanium halide to form a magnesium carrier; And 2) reacting the magnesium carrier, the organometallic compound, and the organosilane compound Method for producing a high molecular weight polyethylene polymerization catalyst comprising a. The method according to claim 1, wherein the magnesium alcoholate of step 1) is a method for producing a super high molecular weight polyethylene polymerization catalyst, characterized in that the compound represented by the formula (1): [Formula 1] Mg (OR1) X In Formula 1, R1 represents hydrogen or a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, X represents OR2, halogen _{atoms, (SO 4) 1/2 OH,} (CO 3) 1/2 or (PO _{4) 1/3,} R2 represents hydrogen or a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms. The method according to claim 1, wherein the magnesium alcoholate of step 1) is Mg (OC ₂ H ₅ ) ₂ , Mg (OiC ₃ H ₇ ) ₂ , Mg (OnC ₃ H ₇ ) ₂ , Mg (OnC ₄ H ₉ ) ₂ , Mg (OCH ₃ ) (OC ₂ H ₅ ), Mg (OC ₂ H ₅ ) (On-C ₃ H ₇ ), or Mg (OCH ₃ ) Cl characterized in that the method for producing a high molecular weight polyethylene polymerization catalyst. The method according to claim 1, wherein the magnesium alcoholate of step 1) comprises a compound magnesium alcoholate further comprising a compound represented by the formula (1) and elements belonging to groups 1, 2, 13 and 14 except magnesium Method for producing a catalyst for ultra-high molecular weight polyethylene polymerization, characterized in that. The method of claim 4, wherein the complex magnesium alcoholate is reacted in an inactivated hydrocarbon solvent with at least two different metal alcoholates comprising magnesium alcoholate; A method of dissolving magnesium in an alcoholic solution of a metal alcoholate except magnesium alcoholate; Or a method of dissolving two or more different metals containing magnesium together in an alcohol together. The method of claim 1, wherein the titanium halide of step 1) is titanium tetrachloride. The method of claim 1, wherein the molar ratio (Ti / Mg) of titanium halide to magnesium alcoholate of step 1) is 0.9 to 5. The method of claim 1, wherein the step 1) is carried out in an inert hydrocarbon solvent. The method according to claim 8, wherein the inert hydrocarbon solvent is an aliphatic hydrocarbon, an aromatic hydrocarbon, a hydrogenated diesel oil fraction, or a gasoline fraction. The method according to claim 1, wherein the reaction conditions of step 1) is a temperature of 20 to 200 ℃, pressure is 0.5 to 50 bar, the method for producing a catalyst for ultra high molecular weight polyethylene polymerization, characterized in that. The method of claim 1, wherein the organometallic compound of step 2) comprises a metal belonging to a group 1, 2 or 13 group. 12. The method of claim 11, wherein the organometallic compound is an organoaluminum compound. The method of claim 12, wherein the organometallic compound is trialkyl aluminum, dialkyl aluminum halide, alkyl aluminum dihalide, aluminum dialkyl halide, or alkyl aluminum sesquihalide. The method of claim 13, wherein the organometallic compound is Al (C ₂ H ₅ ) ₃ , Al (C ₂ H ₅ ) ₂ H, Al (C ₃ H ₇ ) ₃ , Al (C ₃ H ₇ ) ₂ H, Al ( iC ₄ H ₉ ) ₂ H, Al (C ₈ H ₁₇ ) ₃ , Al (C ₁₂ H ₂₅ ) ₃ , Al (C ₂ H ₅ ) (C ₁₂ H ₂₅ ) ₂ , Al (iC ₄ H ₉ ) (C ₁₂ H ₂₅ ) ₂ , Al (iC ₄ H ₉ ) ₂ H, Al (iC ₄ H ₉ ) ₃ , (C ₂ H ₅ ) ₂ AlCl, (iC ₃ H ₉ ) ₂ AlCl, or (C ₂ H ₅ ) ₃ Al ₂ Cl ₃ Method for producing a super high molecular weight polyethylene polymerization catalyst, characterized in that. The method of claim 11, wherein the organometallic compound is a mixture of Al (C ₂ H ₅ ) ₃ and Al (iC ₄ H ₉ ) ₃ ; A mixture of Al (C ₂ H ₅ ) ₃ and Al (C ₈ H ₁₇ ) ₃ ; A mixture of Al (C ₄ H ₉ ) ₂ H and Al (C ₈ H ₁₇ ) ₃ ; A mixture of Al (iC ₄ H ₉ ) ₃ and Al (C ₈ H ₁₇ ) ₃ ; A mixture of Al (C ₂ H ₅ ) ₃ and Al (C ₁₂ H ₂₅ ) ₃ ; A mixture of Al (iC ₄ H ₉ ) ₃ and Al (C ₁₂ H ₂₅ ) ₃ ; A mixture of Al (C ₂ H ₅ ) ₃ and Al (C ₁₆ H ₃₃ ) ₃ ; And Al (C ₃ H ₇ ) ₃ and a mixture of Al (C ₁₈ H ₃₇ ) ₂ (iC ₄ H ₉ ). The method of claim 1, wherein the molar ratio (metal / Ti) of the organometallic compound to the titanium halide is 0.1 to 2. The method of claim 1, wherein the organic silane compound of step 2) is a compound represented by the following Chemical Formula 2, a method for preparing a catalyst for ultrahigh molecular weight polyethylene polymerization: [Formula 2]

In Formula 2, R3, R4, R5, and R6 are the same as or different from each other, and each independently hydrogen, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted alkylene group having 2 to 20 carbon atoms, A substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, a substituted or unsubstituted cycloalkyl group having 5 to 30 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 30 carbon atoms. The method of claim 1, wherein the organic silane compound of step 2) is cyclohexylmethyldimethoxysilane, dimethoxydiphenylsilane, methyltriethoxysilane, methyltrichlorosilane, phenyltrimethylsilane, phenyltriethoxysilane, dicyclo Pentyldimethoxysilane, phenylmethyldimethoxysilane, vinylmethyldiethoxysilane, vinylmethyldimethoxysilane, diisopropyldimethoxysilane, disecondarybutyldimethoxysilane, dicyclohexyldimethoxysilane, isobutylisopropyldimethoxy Silane, isobutyl secondary butyldimethoxysilane, isobutylcyclopentyldimethoxysilane, isopropyl secondary butyldimethoxysilane, isopropylcyclopentyldimethoxysilane, isopropylcyclosilane, dimethyldiisopropeneoxysilane, diphenyldimethoxy Methoxysilane, diphenylsilane, dodecyltriethoxysilane, isobutyltriethoxysilane, isobutyltrimethoxysilane or methylcyclophene Method for producing a silane of ultra high molecular weight polyethylene polymerization catalyst, characterized in that. The method of claim 1, wherein the molar ratio (Si / Ti) of the organosilane compound to titanium halide is 0.1 to 120. 20. A catalyst for ultra high molecular weight polyethylene polymerization, which is prepared by the process according to any one of claims 1 to 19. A method for polymerizing ultra high molecular weight polyethylene, comprising polymerizing ultra high molecular weight polyethylene using the ultra high molecular weight polyethylene polymerization catalyst of claim 20. Ultra-high molecular weight polyethylene prepared by the ultra-high molecular weight polyethylene polymerization method of claim 21.