WO2014175495A1 - 폴리올레핀 중합용 촉매의 제조 방법 및 폴리올레핀 제조방법 - Google Patents
폴리올레핀 중합용 촉매의 제조 방법 및 폴리올레핀 제조방법 Download PDFInfo
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Definitions
- the present invention through a, in more detail is to be the polymerization of the low density polyethylene in a i a half unggi separately without injection of comonomers, simplify the final product process relates to a manufacturing method and a polyolefin production method for a polyolefin polymerization catalyst
- the present invention relates to a method for producing a polyolefin polymerization catalyst which can be produced at low cost.
- Linear alpha-olef in is an important material used in comonomers, cleaners, lubricants, plasticizers, etc. It is widely used commercially, especially 1- hackene and 1-octene in the production of linear low density polyethylene (LLDPE) It is widely used as a comonomer for controlling the density of polyethylene.
- LLDPE linear low density polyethylene
- LLDPE Linear Low-Density Polyethylene
- comonomers such as 1-nuxene and 1-octene.
- alpha-olefins have different types of market and market size
- the technology to selectively produce specific olephine is of great commercial importance, and recently, through selective ethylene oligomerization, Many studies have been made on the chromium catalyst technology for producing high selectivity of nucleene or 1-octene.
- the present invention can secure high catalytic activity and high alpha-lefin selectivity, and can polymerize low-density polyethylene in a semi-reactor without the addition of a comonomer, resulting in a lower cost through a simplified process.
- An object of the present invention is to provide a method for producing a polyolefin polymerization catalyst.
- the present invention is to provide a polyolefin production method using a catalyst obtained according to the production method of the catalyst for polyolefin polymerization.
- the present invention comprises the steps of supporting the organic chromium compound of the formula (1) on a metal oxide carrier; Supporting a promoter including a Group 13 metal on a metal oxide carrier on which the organochrome compound is supported; And it provides a method for producing a catalyst for polyolefin polymerization comprising the step of supporting a metallocene catalyst on the metal oxide carrier on which the organic chromium compound and the promoter are supported.
- R 1 and R 2 are the same as or different from each other, each independently represent a hydrocarbon group having 2 to 20 carbon atoms containing a hetero atom selected from the group consisting of 0, ⁇ and ⁇
- R 3 is hydrogen or a hydrocarbyl group having 2 to 20 carbon atoms containing a hetero atom selected from the group consisting of 0, N
- P and Y is halogen, hydrogen, or hydrocarbyl having 1 to 4 carbon atoms ( hydrocarbyl) group.
- the present invention also provides a method for producing a polyolefin comprising the step of polymerizing an olefin monomer in the presence of a catalyst for polyolefin polymerization obtained in the method for producing a polyolefin polymerization catalyst.
- polyolefin is meant to include both a polymer of one olefin monomer and a copolymer of two or more olefin resins.
- the step of supporting the organic cream compound of Formula 1 on a metal oxide carrier Supporting a promoter including a Group 13 metal on the metal oxide carrier on which the organic cream compound is supported; And dipping a metallocene catalyst on the metal oxide support on which the organic chromium compound and the promoter are supported.
- MA0 In the production process of a conventional polyolefin polymerization catalyst, MA0 It carries out the step of supporting a promoter, such as a polymerization catalyst or an organic chromium compound.
- a promoter such as a polymerization catalyst or an organic chromium compound.
- the amount of promoter supported on silica is limited, the amount of supported metallocene catalyst or free chromium compound is determined according to the amount of promoter supported, and after the promoter Due to the supported organic cream compound, the activity of a polymerization catalyst such as a metallocene catalyst may be lowered.
- a catalyst including an organic cream catalyst that enhances the selectivity of a cocatalyst, a metallocene catalyst for polyolefin polymerization, and a comonomer to a carrier.
- low-density polyethylene polymerization such as 1-nuxene (1-hexene) or 1-octene (1-octene)
- 1-nuxene (1-hexene) or 1-octene (1-octene 1-nuxene (1-hexene
- 1-octene 1-octene
- the inventors of the present invention in the preparation of the catalyst for olefin polymerization, even if the organic cream compound of the formula (1) is preferentially supported on the metal oxide carrier and the co-catalyst and the metallocene catalyst containing a Group 13 metal, It was confirmed that the selectivity to the linear alpha-olefin can be secured at a high level, and the activity site of the metallocene catalyst can be greatly increased, thereby greatly improving the activity of the polymerization reaction catalyst.
- the catalyst for polyolefin polymerization may be prepared by changing the order in which the organic cream compounds and the promoter are supported.
- the selectivity and catalytic activity of linear alpha-olefins such as 1-hexene and / or 1-octene appeared relatively low.
- the supporting order of the cocatalyst on the carrier can be followed by the organic chromium compound, so that the supporting amount of the organic chromium compound can be controlled, and thus, 1-nuxene (1-hexene)
- the amount of the organic cream compound can be controlled to allow polymerization of olefins such as low density polyethylene (PE) having various physical properties.
- the organic chromium compound represented by Chemical Formula 1 included in the catalyst for olefin polymerization according to the above-described embodiment introduces an alkoxy group to the terminal of the ligand to have an organic solvent (eg, toluene or nucleic acid) of the promoter or metallocene catalyst. And solubility).
- the organic cream compound of Chemical Formula 1 may not only be efficiently bonded and supported by the metal oxide carrier, but also may be efficiently bound to a promoter and maintained in its activity. .
- R 1 and R 2 are the same as or different from each other, and each independently a hydrocarbyl having 2 to 20 carbon atoms including a hetero atom selected from the group consisting of 0, N, and P )
- each of R 1 and R 2 of Formula 1 may be a hydrocarbyl group having 2 to 20 carbon atoms including t-butoxy group at the end of the alkyl group.
- each of R 1 and R 2 is an alkoxy group of t-subsidiary, iso-subsidiary, sec-subsidiary, iso-propoxy, n-propoxy, ethoxy and methoxy attached to the terminal. It may be a hydrocarbyl group having 2 to 20 carbon atoms, preferably a t-appendix nuclear chamber.
- R 3 is hydrogen, or a hydrocarbon group having 2 to 20 carbon atoms containing a hetero atom selected from the group consisting of 0, N, and P
- Y is halogen, hydrogen, or C1-C 4 may be a hydrocarbyl group.
- R 3 of Formula 1 may be hydrogen, or may be a hydrocarbyl group having 2 to 20 carbon atoms including a t-subgroup at the terminal of the alkyl group.
- R 3 is hydrogen or contains at the end alkoxy groups of t-butoxy, iso-butoxy, sec-butoxy, iso-propoxy, n-propoxy, ethoxy and methoxy. It may be a hydrocarbyl group having 2 to 20 carbon atoms.
- ⁇ is halogen; Hydrogen; Or a hydrocarbyl group having 1 to 4 carbon atoms, preferably a halogen or methyl group, more preferably chlorine (C1).
- chromium (Cr) may be coordinated with sulfur (S) and nitrogen (N).
- the step of supporting an organic cream compound of the formula (1) on a metal oxide carrier; And supporting a metallocene catalyst on the metal oxide support on which the organic cr compound and the promoter are supported, after supporting the promoter including the group 13 metal on the metal oxide support on which the organic chromium compound is supported. May proceed.
- a conventional metallocene catalyst known to be used for synthesizing polyolefin resin may be used.
- the metallocene catalyst may be one or more selected from the group consisting of compounds represented by Formula 2 and Formula 3 It may include.
- a 1 and A 2 may be the same as or different from each other, and each independently cyclopentadienyl, methylcyclopentadienyl, Dimethylcyclopentadienyl ,
- a 3 and A 4 may be the same as or different from each other, and each independently cyclopentadienyl, methylcyclopentadienyl, dimethylcyclopentadienyl,
- ⁇ is alkylene having 1 to 4 carbon atoms; Alkyl silicon or germanium having 1 to 4 carbon atoms; Alkyl phosphines or amines having 1 to 4 carbon atoms; 6 to 6 carbon atoms
- ⁇ is silicon, germanium, phosphorus, nitrogen, boron or aluminum
- 3 ⁇ 4 is a linear or branched alkyl of 1 to 10 carbon atoms
- 3 ⁇ 4 is hydrogen or a linear or branched alkyl of 1 to 10 carbon atoms
- D is oxygen or sulfur
- L may be linear or branched alkylene having 1 to 15 carbon atoms.
- M is a transition metal of Groups 3 to 11, specifically, may be zirconium, titanium, or hafnium.
- X is an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, an alkylsilyl group having 1 to 20 carbon atoms, a silylalkyl group having 1 to 20 carbon atoms, and an aryl group having 6 to 20 carbon atoms , C7-20 arylalkyl group, C7-20 alkylaryl group, C6-20 arylsilyl group, C6-20 silylaryl group, C1-C20 alkoxy group, C1-C20 alkyl It may be selected from the group consisting of a siloxy group, an aryloxy group having 6 to 20 carbon atoms, a halogen group, an amine group and a tetrahydroborate group, and specifically, may be a chloride group, trimerylsilylmethyl group, or methyl group.
- n is an integer of 1 to 5.
- a 3 and A 4 may be the same as or different from each other, and cyclopentadienyl, methylcyclopentadienyl, dimethylcyclopentadienyl, tetramethylcyclopentadienyl, and pentamethylcyclopentadienyl, respectively.
- a 3 is -NR 4-
- a 4 is cyclopentadienyl, methylcyclopentadienyl, dimethylcyclopentadienyl, tetramethylcyclopentadienyl, pentamethylcyclopentadienyl ,
- R4 is hydrogen, a linear or branched alkyl group having 1 to 20 carbon atoms
- B is a functional group represented by Chemical Formula 31
- M is zirconium, titanium, or hafnium
- X is a halogen group
- n may be 2.
- the catalyst for polyolefin polymerization according to the above-described embodiment further includes a promoter, and such a promoter is an organometallic compound including a Group 13 metal. If it can be used is not particularly limited.
- the promoter may be at least one selected from the group consisting of compounds represented by the following Chemical Formulas 4 to 6, but the present invention is not limited thereto.
- R 4 is the same as or different from each other, and each independently a halogen radical, a hydrocarbyl radical having 1 to 20 carbon atoms, or 1 to 20 carbon atoms substituted with halogen.
- D is aluminum or boron
- R a is C1-C20 hydrocarbyl or halogen substituted by C1-C20 hydrocarbyl
- L is a neutral Lewis base
- [LH] + is a Bronsted acid
- Z is boron or aluminum in a +3 ' form of oxidation
- each E is independently at least one hydrogen atom halogen, hydrocarbyl having 1 to 2.0 carbon atoms Or an aryl group having 6 to 20 carbon atoms or an alkyl group having 1 to 20 carbon atoms, which is unsubstituted or substituted with an alkoxy functional group or a phenoxy functional group.
- Examples of the compound represented by Chemical Formula 4 may include methyl aluminoxane (MA0), ethyl aluminoxane, isobutyl aluminoxane, butyl aluminoxane, and the like.
- alkyl metal compound represented by Formula 4 examples include trimethylaluminum, triethylaluminum, triisobutylaluminum, tripropylaluminum, tributylaluminum, dimethylchloroaluminum, dimethylisobutylaluminum, dimethylethylaluminum and diethyl.
- triethyl ammonium tetraphenyl boron for example, triethyl ammonium tetraphenyl boron, tributyl ammonium tetraphenyl boron, trimethyl ammonium tetraphenyl boron, tripropyl ammonium tetraphenyl boron, trimethyl ammonium tetra ( P-Lyl) Boron, Tripropyl Ammonium Tetra (P-Lyl) Boron, Triethyl Ammonium Tetra ( ⁇ , ⁇ -dimethylphenyl) Boron, Trimethyl Ammonium Tetra ( ⁇ , ⁇ -dimethylphenyl) Boron, Tributyl Ammonium Umtetra ( ⁇ - Trifluoromethylphenyl) boron,. Trimethylammonium tetra (P- trifluoromethylphenyl) boron, tributyl ammonium tetrapentafluorophenyl
- Triphenylcarbonium tetrapentafluorophenylboron and the like Triphenylcarbonium tetrapentafluorophenylboron and the like.
- the content of each component is not limited in its composition, but the selectivity to linear alpha olefin is increased.
- the metal oxide carrier 1 to 20 parts by weight of the organic cream compound of Formula 1; remind Cocatalyst "5 to 100 parts by weight; And 1 to 20 parts by weight of the metallocene catalyst; may be supported.
- the metal oxide support is not particularly limited as long as it is a kind of metal oxide generally used for the supported catalyst.
- it may be a form including any one carrier selected from the group consisting of silica, silica-alumina, and silica-magnesia.
- the carriers can be dried at high temperatures, and they can typically include oxides, carbonates, sulfates, nitrates, such as Na 2 O, K 2 CO 3 , BaSO 4 and Mg (N0 3 ) 2 .
- the amount of the hydroxy group can be controlled by the preparation method and preparation conditions of the carrier and drying conditions (temperature, time, drying method, etc.), and 0.1 to 10 ⁇ ol / g is preferable, and more preferably 0.1 to 1 ⁇ ol / g, more preferably 0.1 to 0.5 mmol / g.
- a carrier having a large amount of semi-permanent siloxane groups participating in the support may be used while chemically removing the hydroxyl group.
- a method for producing a polyolefin including the step of polymerizing the olefin monomer in the presence of a catalyst for polyolefin polymerization obtained in the method of the above-described embodiment.
- the catalyst for polyolefin polymerization obtained in the production method of the embodiment includes an organochromium compound capable of exhibiting high selectivity for linear alpha-olefins and a metallocene catalyst for enhancing the polymerization efficiency of olefins.
- an organochromium compound capable of exhibiting high selectivity for linear alpha-olefins
- a metallocene catalyst for enhancing the polymerization efficiency of olefins.
- the polyolefin polymerization catalyst it is possible to secure a high level of selectivity for the linear alpha-olefin, it is possible to greatly increase the active site of the metallocene catalyst, thereby greatly improving the activity of the polymerization reaction catalyst You can.
- the catalyst for polyolefin polymerization when used, low-density polyethylene polymerization such as 1-hexene or 1-octene is carried out.
- low-density polyethylene can be polymerized in a semi-atomizer without the need for additional comonomer injection, resulting in a lower cost through a simplified process. Can be.
- the urepin monomers used in the method for preparing the polyolefin can include ethylene, and preferably ethylene alone.
- the polyolefin provided according to the production method may be a low density polyolefin.
- reaction conditions and reaction apparatuses commonly used may be used without any significant limitation.
- high catalyst activity and high alpha-olefin selectivity can be secured, and low density polyethylene can be polymerized in a semi-aperture without the addition of a comonomer, resulting in a lower cost through a simplified process.
- a method for producing a catalyst for polyolefin polymerization a catalyst obtained in such a production method, and a method for producing polyolefin using the catalyst.
- polyolefin polymerization catalyst By using the obtained polyolefin polymerization catalyst, it is possible to produce alpha-lepine at the same time as polymer polymerization with one catalyst, and use only one ungpun with ethylene without using a small amount of comonomer or comonomer Low density polyolefins may be provided.
- reaction product was cooled to room temperature, the resulting organic layer was extracted with ether, residual water was removed with MgS0 4, and the solvent was distilled off under reduced pressure to obtain 55.6 g of oily product (6-tert-butoxyhexane-l-thiol, yield 76.9mol). .
- the product was confirmed to be purity 97% by GC analysis, -NMR analysis results were as follows.
- the reaction mixture was opened to obtain a polymerization solution, and the composition of the organic layer was confirmed by GC-MS / MS, and GC 3 ⁇ from which the nucleic acid as a reaction solution was removed by GC-FID was obtained. Also, The reaction mixture was filtered and dried to a solid powder to determine the amount of linear alpha olefins produced.
- Example 1 instead of the dilution solution of the organic chromium compound obtained in Production Example 1 (organic chromium compound 1.0 ⁇ ol), the dilution solution of the organic chromium compound obtained in Production Example 2 (organic chromium compound 1.0 ⁇ 0 1) was used.
- Supported catalyst (CE1) was prepared in the same manner as in Example 1.
- a linear alpha olefin was synthesized and analyzed in the same manner as in Example 1, except that the supported catalyst (CE1) prepared above was used instead of the supported catalyst (E1).
- Linear alpha olepin was synthesized and analyzed in the same manner as in Example 1 except for using the prepared supported catalyst (CE2) instead of the supported catalyst (E1).
- Linear alpha olepin was synthesized and analyzed in the same manner as in Example 1 except for using the prepared supported catalyst (CE3) instead of the supported catalyst (E1).
- Example 1 it was confirmed that the polyethylene can be synthesized by securing a high catalytic activity with octene selectivity of 10 GC area% or more using the supported catalyst synthesized in Preparation Example 1.
- the organic kneading compound of Preparation Example 2 was prepared before the MA0 promoter.
- Comparative Example 1 using a supported catalyst prepared by supporting it was confirmed that the polymerization reaction could not proceed when the ethylene monomer is injected.
- Comparative Example 2 prepared by supporting the organic chromium compound of Preparation Example 2 after supporting the MA0 cocatalyst on the silica carrier, it was confirmed that the octene selectivity was significantly lower than that of Example 1, and the activity of the catalyst was also performed. Only about 50% of Example 1 was confirmed.
- Comparative Example 1 prepared by supporting the organic chromium compound of Preparation Example 1 after supporting the MA0 cocatalyst on a silica carrier, the activity of the catalyst may be secured to some extent, but the octene selectivity is lower than that of Example 1. Point was confirmed.
- the catalyst slurry was injected into the reactor while washing with 0.2 L of nucleic acid. After adding ethylene 40bar to the reaction vessel and saturating ethylene in the reactor for 1 minute, the reaction was started at 500 rpm and reacted for 1 hour. After the reaction was completed, the stirring was stopped, and after the reaction was cooled to room temperature, the remaining ethylene gas was discharged (vent).
- a metallocene supported catalyst (E3) was prepared in the same manner as in Example 2, except that polymerization catalyst B was used instead of polymerization catalyst A.
- Example 4 The polyolefin was synthesized and analyzed in the same manner as in Example 2, except that the prepared metallocene supported catalyst (E3) was used instead of the metallocene supported catalyst (E2). 3.
- Example 4 The polyolefin was synthesized and analyzed in the same manner as in Example 2, except that the prepared metallocene supported catalyst (E3) was used instead of the metallocene supported catalyst (E2). 3.
- a metallocene supported catalyst (E3) was prepared in the same manner as in Example 2, except that polymerization catalyst B was used instead of polymerization catalyst A.
- the polyolefin was synthesized and analyzed in the same manner as in Example 2, except that the prepared metallocene supported catalyst (CE4) was used instead of the metallocene supported catalyst (E2).
- the polyolefin was synthesized and analyzed in the same manner as in Example 2, except that the prepared metallocene supported catalyst (CE6) was used instead of the metallocene supported catalyst (E2).
- the polyolefin was synthesized and analyzed in the same manner as in Example 2, except that the prepared metallocene supported catalyst (CE7) was used instead of the metallocene supported catalyst (E2).
- a metallocene supported catalyst (CE9) was prepared in the same manner as in Comparative Example 5 except that 0.5 mmol of the polymerization catalyst B was used instead of 0.5 mmol of the polymerization catalyst A.
- the polyolefin was synthesized and analyzed in the same manner as in Example 2, except that the prepared metallocene supported catalyst (CE9) was used instead of the phthalocene supported catalyst (E2).
- a metallocene supported catalyst (CE10) was prepared in the same manner as in Comparative Example 5 except that 0.5 mmol of the polymerization catalyst B was used instead of 0.5 mmol of the polymerization catalyst A.
- the polyolefin was synthesized and analyzed in the same manner as in Example 2, except that the prepared metallocene supported catalyst (CE10) was used instead of the metallocene supported catalyst (E2).
- a metallocene supported catalyst (CE11) was prepared in the same manner as in Comparative Example 5, except that 0.5mnrolol of polymerization catalyst B was used instead of 0.5 ⁇ l ol of polymerization catalyst A.
- Example 2 In the same manner as in Example 2, except that the metallocene supported catalyst (CE10) prepared above was used instead of the metallocene supported catalyst (E2), and 20 ml of 1-nuxene was additionally added during the reaction. Polyolefins were synthesized and analyzed.
- T1 is an organic chromium compound prepared in Preparation Example 1
- T2 is an organic chromium compound prepared in Preparation Example 2.
- Polymerization A and polymerization B mean the polymerization catalyst A and the polymerization catalyst B described above, respectively.
- the Activity refers to the ratio of the polymer obtained during one hour polymerization to the amount of supported catalyst.
- the temperature was raised to 20 (C) at 20 ° C / min while maintaining the equi 1 ibrat ion at 30 ° C, and then at that temperature for 5 minutes. maintained by the copolymer sample to remove thermal history. was back to 10 ° C and then reducing the temperature at a rate of 10 ° C / min, the temperature was raised to 10 ° C / min confirmed that an endothermic peak by measuring the melting point.
- Examples 2 to 3 it is possible to polymerize low-density polyethylene with high efficiency without injecting comonomers such as 1-nuxene, and thus synthesized at levels equivalent to those of Comparative Example 7 and Comparative Example 11 further injected with 1-nuxene It is possible to increase the content of 1-nuxene in the prepared resin.
- the content of 1-nuxene can be greatly increased in the synthesized resin.
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JP2015527355A JP6029757B2 (ja) | 2013-04-23 | 2013-05-08 | ポリオレフィン重合用触媒の製造方法およびポリオレフィンの製造方法 |
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CN104356269A (zh) * | 2014-11-04 | 2015-02-18 | 浙江大学 | 一种串级催化乙烯制备单分布lldpe的方法 |
WO2015173323A1 (en) * | 2014-05-15 | 2015-11-19 | Scg Chemicals Co., Ltd. | Catalyst system for the polymerisation and/or oligomerisation of olefins and process utilizing the catalyst system |
WO2016186282A1 (ko) * | 2015-05-15 | 2016-11-24 | 주식회사 엘지화학 | 촉매 조성물 및 이를 이용한 폴리올레핀의 제조방법 |
US10207963B2 (en) | 2015-05-15 | 2019-02-19 | Lg Chem, Ltd. | Catalyst system for olefin oligomerization reaction, and method for olefin oligomerization using the same |
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KR101644113B1 (ko) * | 2013-10-18 | 2016-07-29 | 주식회사 엘지화학 | 혼성 담지 메탈로센 촉매 |
WO2016186295A1 (ko) * | 2015-05-15 | 2016-11-24 | 주식회사 엘지화학 | 혼성 담지 촉매계, 및 이를 이용한 폴리올레핀의 제조방법 |
KR20160134464A (ko) * | 2015-05-15 | 2016-11-23 | 주식회사 엘지화학 | 혼성 담지 촉매계, 및 이를 이용한 폴리올레핀의 제조방법 |
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