WO2016129818A1 - 폴리올레핀-폴리스티렌 블록공중합체를 포함하는 유기 아연 화합물 및 이의 제조 방법 - Google Patents
폴리올레핀-폴리스티렌 블록공중합체를 포함하는 유기 아연 화합물 및 이의 제조 방법 Download PDFInfo
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- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F212/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
- C08F212/02—Monomers containing only one unsaturated aliphatic radical
- C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
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- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
Definitions
- the present invention relates to an organic zinc compound comprising a polyolefin-polystyrene block copolymer and a process for producing the same.
- Polyolefin-polystyrene block copolymers such as styrene-ethylene / butylene-styrene (SEBS) or styrene-ethylene / propylene-styrene (SEPS) currently have a market of several hundred thousand tons worldwide. In addition, they have the advantages of excellent heat resistance and light resistance compared to styrene-butadiene-styrene (SBS) or styrene-isoprene-styrene (SIS), soft and strong touch of grip and handle, elastic material of diaper, medical and Oil-gels used in communication materials, impact modifiers in engineering plastics, flexibilizers or tougheners in transparent polypropylene, and the like.
- SEBS styrene-ethylene / butylene-styrene
- SEPS styrene-ethylene / propylene-styrene
- SBS styrene-butadiene-st
- SEBS is prepared through a two-step reaction of hydrogenating SBS obtained by anionic polymerization of styrene and butadiene.
- SEPS is similarly prepared through a two-step reaction of hydrogenating SIS obtained by anionic polymerization of styrene and isoprene.
- the process of saturating all the double bonds contained in the polymer main chain by saturating the process cost is high, and the cost of SEBS and SEPS is significantly higher than that of SBS and SIS before the hydrogenation reaction. This may limit market expansion.
- An object of the present invention is to provide an organic zinc compound comprising a polyolefin-polystyrene block copolymer.
- the present invention also aims to provide a one-pot production method for producing an organic zinc compound comprising the polyolefin-polystyrene block copolymer directly from an olefin monomer and a styrene monomer.
- One embodiment of the present invention relates to an organic zinc compound represented by the following formula (1).
- R 1 and R 2 are each independently hydrogen or an alkyl group having 1 to 20 carbon atoms;
- Ar is an aryl group having 6 to 20 carbon atoms;
- A is a hydrocarbon group having 1 to 20 carbon atoms;
- a 1 and a 2 have an average value of about 0 to about 10,000;
- b 1 and b 2 have an average value of about 10 to about 1,000.
- R 1 and R 2 in Chemical Formula 1 are each independently hydrogen, methyl group, ethyl group, butyl group, hexyl group, or octyl group;
- Ar is a phenyl group;
- A may be any one of a methyl group, an ethyl group, a hexyl group, a phenyl group and a benzyl group.
- the organic zinc compound may be an organic zinc compound represented by Formula 1A.
- R 3 , R 4 , R 5, and R 6 are each independently hydrogen, methyl, ethyl, butyl, hexyl, and octyl groups, and R 3 and R 4 are not the same as each other, R 5 and R 6 are not identical to each other;
- Ar is a phenyl group;
- A is a methyl group, ethyl group, hexyl group, phenyl group or benzyl group;
- p and 1-p are the mole fractions of each repeating unit constituting repeating unit a 1 , and p is greater than about 0 and less than about 1;
- q and 1-q are the mole fractions of each repeating unit constituting repeating unit a 2 , and q is greater than about 0 and less than about 1;
- the average value of a 1 and a 2 is greater than about 0 to about 10,000;
- the average value of b 1 and b 2 is about 10 to about 1,000.
- R 3 and R 4 of Formula 1A is hydrogen, and the other is methyl, ethyl, butyl or hexyl;
- One of R 5 and R 6 is hydrogen, and the other may be a methyl group, ethyl group, butyl group or hexyl group.
- the method for preparing the organic zinc compound may include a first step of coordinating an olefin monomer in the presence of an organic zinc represented by the following Chemical Formula 2 with a transition metal catalyst to prepare a compound represented by the following Chemical Formula 3; And a second step of performing anionic polymerization by sequentially inputting an alkyllithium compound represented by the following Formula 4, an amine ligand represented by the following Formula 5, and a styrene monomer to the compound represented by Formula 3.
- A is a hydrocarbon group having 1 to 20 carbon atoms
- R 1 and R 2 are each independently hydrogen or an alkyl group having 1 to 20 carbon atoms;
- A is a hydrocarbon group having 1 to 20 carbon atoms; the average value of a 1 and a 2 is about 0 to about 10,000;
- B is an alkyl group having 1 to 20 carbon atoms
- R 51 and R 52 are each independently a hydrocarbon group having 1 to 20 carbon atoms, and z is an integer of about 2 or about 3.
- A may be any one of a methyl group, an ethyl group, a hexyl group, a phenyl group, and a benzyl group.
- the transition metal catalyst may include a transition metal compound represented by the following Formula 6A or 6B.
- R 61 is hydrogen or methyl, and R 62 is hydrogen or phenyl;
- the polymerization in the first step may be performed by solution polymerization using a solvent containing at least one of isobutane, hexane, cyclohexane and methylcyclohexane.
- the alkyllithium compound may be nBuLi.
- the amine ligand represented by Formula 5 may be a compound in which R 51 is methyl, R 52 is hydrogen, and z is 2.
- the molar ratio of the alkyllithium compound and the amine ligand may be about 1: 0.5 to about 1: 1.5.
- the present invention has the effect of providing a method for producing commercially useful styrenic polymers or polyolefin-polystyrene block copolymers directly from olefin monomers and styrene monomers in one-pot.
- Example 1 is a graph showing the results of GPC analysis of a polyolefin sample taken after the first step in Example 15 of the present invention and the polyolefin-polystyrene copolymer prepared through both the first and second steps.
- Example 2 is a polyolefin-polystyrene block copolymer prepared in Example 13 of the present invention TEM image.
- Figure 3 is a polyolefin-polystyrene block copolymer prepared in Example 14 of the present invention TEM image.
- Figure 4 is a polyolefin-polystyrene block copolymer prepared in Example 15 of the present invention TEM image.
- Example 5 is a TEM image of a blend having the same molecular weight as the polyolefin-polystyrene block copolymer prepared in Example 15 of the present invention.
- FIG. 6 is a diagram showing a stress-strain curve of a polyolefin-polystyrene block copolymer prepared in Example 16 and a blend having the same molecular weight.
- One embodiment of the present invention relates to an organic zinc compound represented by the following formula (1).
- R 1 and R 2 are each independently hydrogen or an alkyl group having 1 to 20 carbon atoms;
- Ar is an aryl group having 6 to 20 carbon atoms;
- A is a hydrocarbon group having 1 to 20 carbon atoms;
- a 1 and a 2 have an average value of about 0 to about 10,000;
- b 1 and b 2 have an average value of about 10 to about 1,000.
- the organic zinc compound represented by Chemical Formula 1 is a compound first disclosed by the production method of the present invention and includes a polyolefin-polystyrene block copolymer in its structure.
- the organic zinc compound represented by Formula 1 may be easily converted into a polyolefin-polystyrene block copolymer having a structure represented by the following Chemical Formula 7, which is industrially useful by reacting with water, oxygen, or an organic acid.
- R is specifically hydrogen or an alkyl group having 1 to 20 carbon atoms, more specifically, hydrogen, methyl, ethyl, butyl, hexyl or octyl, and in this case, the unit price and manufacturing cost is low and commercial The value in use can be even better.
- Block copolymers prepared using the organic zinc compound represented by Formula 1 may be, for example, polyethylene-block-polystyrene, polypropylene-block-polystyrene, poly (1-butene) -block-polystyrene, poly (1- Hexene) -block-polystyrene, poly (1-octene) -block-polystyrene and the like.
- repeating units a 1 and a 2 represented by square brackets ([]) mean a polyolefin block constituting the block copolymer.
- repeating units b 1 and b 2 represented by square brackets ([]) in the formula refer to polystyrene blocks constituting the block copolymer.
- the repeating units may each be composed of repeating units derived from one or more monomers.
- a 1 , a 2 , b 1, and b 2 may be used as symbols for distinguishing repeating units (or each block), and may be used as symbols representing the number of repetitions of each repeating unit.
- the values of a 1 , a 2 , b 1 and b 2 are obtained not by a single integer but by a mixture with a constant distribution, and thus the average value is discussed and discussed.
- the average value of a 1 and a 2 of Formula 1 may be adjusted according to the content of the olefin monomer and the organic zinc compound introduced into the reaction material.
- the average value of a 1 and a 2 is not limited to a lower limit, but when the average value of a 1 and a 2 is greater than about 10,000, the viscosity is large, so that the preparation method is not easy, and thus it is not easy to implement the compound having the structure of Chemical Formula 1. .
- a 1 and a 2 in Formula 1 may have an average value of about 0 to about 10,000.
- the average value of b 1 and b 2 of the formula (1) can be adjusted according to the amount of styrene monomer introduced into the reaction material.
- b 1 and b 2 is the average value of greater than about 10,000 it is not easy manufacturing method, the viscosity cursor.
- b 1 and b 2 of Formula 1 may have an average value of about 10 to about 1,000. Within this range, the block copolymer can be applied to more various fields, and the manufacturing method is more efficient.
- the repeating units a 1 and a 2 of Chemical Formula 1 may be prepared by using an olefin monomer having an alkyl group having 1 to 20 carbon atoms as a material in the preparation of the organic zinc compound of Chemical Formula 1.
- repeating units a 1 and a 2 can be prepared by using olefin monomers including ethylene, propylene, 1-butene, 1-hexene, 1-octene, 1-decene and the like as the reaction material.
- the repeating units b 1 and b 2 of Formula 1 may be specifically prepared by using a styrene-based monomer as a reaction material.
- the repeating units a 1 and a 2 may be prepared by using a styrene monomer including ethylene substituted with an aryl group having 6 to 20 carbon atoms, ethylene substituted with a phenyl group, and the like as a reaction material.
- the terminal A of the formula (1) is derived from the organic group (A) contained in the organic zinc ((A) 2 Zn) represented by the formula (2) to be introduced in the method for producing an organozinc compound described later.
- Specific examples of (A) 2 Zn include dimethyl zinc, diethyl zinc, dihexyl zinc, diphenyl zinc, dibenzyl zinc and the like.
- Such exemplary compounds are easy to purchase or prepare on the market, and can improve the production efficiency of the organozinc compound of formula (1).
- R 1 and R 2 in Formula 1 are each independently any one of hydrogen, methyl group, ethyl group, butyl group, hexyl group and octyl group;
- Ar is a phenyl group;
- A may be any one of a methyl group, an ethyl group, a hexyl group, a phenyl group and a benzyl group.
- the organic zinc compound may realize more excellent reaction efficiency, and may provide a polyolefin-polystyrene block copolymer having a high commercial ripple effect and a method of preparing the same.
- the repeating units a 1 and a 2 of Formula 1 may include one or more (eg, two) olefin repeat units, for example, in the following Formula 1A.
- R 3 , R 4 , R 5, and R 6 are each independently hydrogen, methyl, ethyl, butyl, hexyl, and octyl groups, and R 3 and R 4 are not the same as each other, R 5 and R 6 are not identical to each other;
- Ar is a phenyl group;
- A is a methyl group, ethyl group, hexyl group, phenyl group or benzyl group;
- p and 1-p are the mole fractions of each repeating unit constituting repeating unit a 1 , and p is greater than about 0 and less than about 1;
- q and 1-q are the mole fractions of each repeating unit constituting repeating unit a 2 , and q is greater than about 0 and less than about 1;
- the average value of a 1 and a 2 is greater than about 0 to about 10,000;
- the average value of b 1 and b 2 is about 10 to about 1,000.
- the organic zinc compound represented by Chemical Formula 1A is easily converted into industrially useful polyolefin-polystyrene block copolymer by reacting with water, oxygen, or organic acid.
- R 3 , R 4 , R 5 and R 6 may be randomly distributed in repeating units a 1 and a 2 (polyolefin block).
- the repeating unit a 1 may include olefin repeating units p and 1-p.
- p and 1-p are used as symbols to distinguish the olefin repeating units constituting the repeating unit a 1 , and at the same time, the repeating unit p and the repeating unit 1-p each represent a mole fraction present in the repeating unit a 1 .
- the polyolefin block in which the two repeating units (p and 1-p) are randomly distributed is selected from two olefins such as ethylene, propylene, 1-butene, 1-hexene, 1-octene, and 1-decene as a reaction material. By use.
- the repeating unit a 2 may include repeating units q and 1-q.
- q and 1-q are used as symbols to distinguish the olefin repeating units constituting the repeating unit a 2 , and at the same time, the repeating unit q and the repeating unit 1-q each represent a mole fraction present in the repeating unit a 2 .
- the polyolefin block in which the two repeating units (q and 1-q) are randomly distributed is selected from two olefins such as ethylene, propylene, 1-butene, 1-hexene, 1-octene, and 1-decene as reaction materials. By use.
- any one of R 3 and R 4 of Formula 1A is hydrogen, the other is a methyl group, ethyl group, butyl group or hexyl group;
- One of R 5 and R 6 is hydrogen, and the other may be a methyl group, ethyl group, butyl group or hexyl group.
- the organic zinc compound represented by Chemical Formula 1A may provide polyolefin-polystyrene block copolymers having various structures, which have been conventionally limited in commercial production, with better productivity.
- Block copolymers prepared using the organic zinc compound represented by Formula 1A include, for example, poly (ethylene-co-propylene) -block-polystyrene, poly (ethylene-co-1-butene) -block-polystyrene, Poly (ethylene-co-1-hexene) -block-polystyrene, poly (ethylene-co-1-octene) -block-polystyrene and the like.
- Another embodiment of the present invention relates to a method for preparing an organozinc compound of formula (1).
- the organic zinc compound production method including the polyolefin-polystyrene block copolymer of the present invention prepares the organic zinc compound of Chemical Formula 1 using the olefin monomer and the styrene monomer as a reaction material.
- the organozinc compound of 1 prepared in this way can be easily converted to polyolefin-polystyrene block copolymers of industrially useful structure by reacting with water, oxygen, or organic acids.
- the method of preparing the organic zinc compound of the present invention can not only easily obtain a polyolefin-polystyrene block copolymer through a simple process of continuously adding water, oxygen, or an organic acid to the preparation method, but also separately
- the advantage is that this is a one-pot production method in which the saturation process for hydrogenation is omitted.
- the organic zinc compound of Chemical Formula 1 and a method for preparing the same by the one-pot process are first disclosed through the present invention.
- the structure of the polyolefin block to be produced is not limited and can be variously manufactured. It is a very useful technique for preparing copolymers.
- the method for preparing an organic zinc compound of Formula 1 of the present invention is prepared through a one-pot manufacturing method, and thus, a polyolefin-polystyrene block copolymer can be prepared from an organic zinc compound of Formula 1 through a one-pot manufacturing method. Therefore, it is concise in terms of manufacturing method and is advantageous for commercialization.
- the method for producing an organic zinc compound comprising the polyolefin-polystyrene block copolymer includes a method of preparing a compound represented by the following Chemical Formula 3 by coordination polymerization of an olefin monomer with a transition metal catalyst in the presence of an organic zinc represented by the following Chemical Formula 2. Stage 1; And a second step of performing anionic polymerization by sequentially inputting an alkyllithium compound represented by the following Formula 4, an amine ligand represented by the following Formula 5, and a styrene monomer to the compound represented by Formula 3.
- A is a hydrocarbon group having 1 to 20 carbon atoms
- R 1 and R 2 are each independently hydrogen or an alkyl group having 1 to 20 carbon atoms;
- A is a hydrocarbon group having 1 to 20 carbon atoms; the average value of a 1 and a 2 is about 0 to about 10,000;
- B is an alkyl group having 1 to 20 carbon atoms
- R 51 and R 52 are each independently a hydrocarbon group having 1 to 20 carbon atoms, and z is an integer of about 2 or about 3.
- the compound represented by Chemical Formula 3 prepared in the first step may be prepared by coordination polymerization of an olefin monomer in the presence of an organic zinc represented by Chemical Formula 2 with a transition metal catalyst, as described below.
- the olefin monomer of another embodiment may be a monomer formed from a mixture of ethylene with any one of propylene, 1-butene, 1-hexene and 1-octene.
- Such polyolefins made from any one of propylene, 1-butene, 1-hexene, 1-octene and ethylene can be, for example, HDPE, MDPE, LLDPE, VLDPE, POE, EP and the like.
- A may be any one of a methyl group, an ethyl group, a hexyl group, a phenyl group, and a benzyl group.
- the polymerization may be performed under a constant pressure.
- the organic zinc represented by Chemical Formula 2 may be dimethyl zinc, diethyl zinc, dihexyl zinc, diphenyl zinc, or dibenzyl zinc compound. Such compounds are commercially available and can be readily prepared.
- the transition metal catalyst used in the first step is not limited, but is a homogeneous (metallocene) catalyst or non-uniform, including a transition metal catalyst which is usually the main catalyst and / or an organoaluminum or boron compound that is a promoter.
- a homogeneous catalyst may be preferred because of its superior catalytic activity.
- the first step of preparing an organic zinc compound represented by Chemical Formula 3 by olefin polymerization using various transition metal catalysts in the presence of organic zinc ((A) 2 Zn) is a polyolefin chain precisely controlled by a known method.
- Commercially readily used in the preparation of these compounds J. AM. CHEM. SOC. 2005, 127, 9913; Science 2006, 312, 714.
- Known methods can be utilized for the polymerization of the first stage of the invention.
- the transition metal catalyst may include a compound represented by the following Formula 6A or 6B.
- R 61 is hydrogen or methyl, and R 62 is hydrogen or phenyl;
- R 61 is hydrogen or methyl; R 62 is hydrogen or phenyl.
- the transition metal catalyst when the compound represented by Chemical Formula 6a or 6b is used, it may be more efficient to convert the aforementioned organic zinc ((A) 2 Zn) into the compound represented by Chemical Formula 3.
- the transition metal catalyst may be one activated by methyl aluminoxane (MAO) or boron-based promoter.
- the coordination polymerization of the first step may be performed in a homogeneous solution state.
- the solvent may be a hydrocarbon solvent or the olefin monomer itself.
- the hydrocarbon solvent include aliphatic hydrocarbon solvents having 4 to 20 carbon atoms, specifically isobutane, hexane, cyclohexane, methylcyclohexane, and the like.
- the said solvent can be used individually by 1 type, and can also mix and use 2 or more types.
- the polymerization temperature of the first step may vary depending on the reactant, the reaction conditions, and the like, and specifically, may be performed at about 70 degrees to about 170 degrees Celsius. Within this range, the catalyst can be thermally stabilized while increasing the solubility of the polymer.
- the polymerization of the first stage can be carried out batchwise, semi-continuously or continuously and can also be carried out in two or more stages with different reaction conditions.
- the compound represented by Chemical Formula 3 prepared by the first step of the above-described embodiments serves as a precursor for preparing the organic zinc compound represented by Chemical Formula 1 by the second anion polymerization reaction described below. do.
- the organic zinc compound in which a 1 and a 2 in Chemical Formula 1 are both about 0 may be prepared. have. Even in this case, two steps to be described later are continuously performed, whereby an organic zinc compound including a styrene polymer other than the polyolefin-polystyrene block copolymer can be obtained.
- an organic zinc compound including the organic zinc compound of Chemical Formula 1 described above may be prepared.
- the styrene-based monomer may be continuously inserted between the zinc-carbon bonds included in the compound of Formula 3 formed by the first step.
- an organic zinc compound comprising the block copolymer of the present invention by a one-pot manufacturing method.
- the organic zinc compound prepared in the above process is reacted with water, oxygen, or organic acid to be converted into industrially useful polyolefin-polystyrene block copolymer.
- organic zinc ((A) 2 Zn) does not itself serve as an initiator in styrene polymerization. That is, if only the styrene monomer is added after the coordination polymerization of the first step, the polymerization reaction does not proceed at all.
- styrene polymerization is performed using alkyllithium as an initiator in the presence of an organic zinc compound ((A) 2 Zn) in a hydrocarbon solvent, a polymer chain is formed only from the alkyllithium compound.
- the organozinc compound remains as it is without participating in the polymer chain forming reaction (Comparative Example 1). This is also well known (Polymer, 2009, 50, 3057).
- an anionic polymerization is performed by adding an alkyllithium compound and an amine ligand of Formula 5 described below as an initiator. That is, an anion polymerization is performed by sequentially adding an alkyllithium compound, an amine ligand represented by the following Formula 5, and a styrene monomer to the compound represented by Formula 3, and thus, an organic compound including the block copolymer represented by Formula 1 above. To prepare a zinc compound.
- the alkyl lithium compound may be a compound represented by the following formula (4).
- B is an alkyl group having 1 to 20 carbon atoms.
- B-Li may be n-BuLi.
- n-BuLi is a material widely used as an initiator of anionic polymerization, and is easily available and has excellent cost efficiency.
- a styrene-based monomer is continuously inserted between zinc-carbon bonds of the compound represented by Chemical Formula 3 by adding an amine ligand represented by Chemical Formula 5 together with the aforementioned alkyllithium compound.
- a polystyrene-based block which is a novel process that is not known in the art.
- R 51 and R 52 are each independently a hydrocarbon group having 1 to 20 carbon atoms, and z is an integer of about 2 or about 3.
- the compound of Formula 5 may be a compound wherein R 51 is methyl, R 52 is hydrogen and z is 2 (N, N, N ', N'-tetramethylethylenediamine, TMEDA).
- the compound of the formula (5) is a compound used for the purpose of improving the reactivity as a base or the nucleophile of alkyllithium by coordinating well with lithium, and is easily available and inexpensive.
- the compound of Formula 5 may be used in an amount of about 1: 0.5 to about 1: 1.5, for example, 1: 1 molar ratio with respect to the alkyllithium compound (B-Li).
- the alkyllithium compound and the compound of formula 5 may be added by mixing in an aliphatic hydrocarbon solvent or the alkyllithium compound and the compound of formula 5 may be sequentially added to the reactor.
- an organic zinc compound including the block copolymer of Chemical Formula 1 may be prepared by performing a second stage anionic polymerization after the first stage olefin polymerization.
- the transition metal catalyst used in the first stage olefin polymerization does not affect the second stage anion polymerization in a very small amount compared to the alkyllithium compound introduced in the second stage.
- an organoaluminum-based cocatalyst added to the first stage olefin polymerization is additionally used, the amount thereof cannot be ignored compared to the alkyllithium compound introduced to the second stage.
- organoaluminum compounds form complexes with alkyllithium compounds and are actually used as inhibitors of reaction rate during styrene anion polymerization (Polymer, 2009, 50, 3057). That is, when performing the second step anion polymerization after performing the first step using the organoaluminum compound as a promoter, the number of moles of the alkyllithium compound to be added is the aluminum contained in the organoaluminum compound added in the first step. Preferably, the molar number is added to the sum of about 0.15 to about 0.25 times the number of moles of the organic zinc of formula (2).
- the second step may be performed in the presence of the organic zinc compound (A 2 Zn) of Chemical Formula 2 without performing the olefin polymerization of the first step.
- the organic zinc compound produced at this time is a compound when a in Formula 1 is 0.
- the number of moles of the alkyllithium compound added may be about 0.1 times to about 1.0 times the number of moles of the organic zinc compound (A 2 Zn). More specifically, it is more preferable to add about 0.15 times to about 0.25 times. If too small amount is added, the anion polymerization rate is slowed down, and if a large amount is added, the amount of polystyrene assumed from the alkyllithium compound increases, which is not preferable.
- the polymerization temperature of the second step may vary depending on the reaction materials, reaction conditions, and the like, and specifically, may be performed at about 70 degrees to about 170 degrees Celsius. Within this range, it is possible to further improve the yield of the organic zinc compound including the block copolymer represented by the formula (1).
- the polymerization of the second stage can be carried out batchwise, semicontinuously or continuously and can also be carried out in two or more stages with different reaction conditions.
- the polymerization time of the second step may vary depending on the reaction material, reaction conditions, etc., but may be about 0.5 to about 10 hours, about 0.5 to about 8 hours, about 0.5 to about 5 hours, or about 0.5 to about 2 hours. have. Within this range, the conversion rate of the introduced styrene monomer into the organic zinc compound including the block copolymer may be increased.
- a feature of the present invention is to provide an organozinc compound of formula (1) prepared by performing styrene anion polymerization in one-pot continuously after the first stage olefin polymerization, and using this to simplify the manufacturing method of the block copolymer to lower the manufacturing cost It is easy to apply commercial process.
- Compound tmeda (11.2 mg, 0.096 mmol) was dissolved in methylcyclohexane (2.5 g) in a 1: 1 molar ratio and added together.
- methylcyclohexane 2.5 g
- anionic polymerization was performed at 90 hours for 2 hours.
- NMR spectra confirmed that all of the styrene was converted to polystyrene.
- Ethanol (1 mL) was added to decompose the organozinc compound and the organolithium compound including polystyrene, and then dissolved in methylcyclohexane to pass through a silica gel pad to obtain pure polystyrene.
- the mass of pure polystyrene obtained was consistent with the amount of styrene monomer added.
- the molecular weight of the obtained polystyrene was measured using gel permeation chromatography, and the value of the number average molecular weight (Mn) was 25,100. From the measured Mn value, the number of polystyrene polymer chains produced from the organozinc compound can be calculated through the following equation.
- the number of polystyrene polymer chains produced from the organozinc compound is 1.87, which proves that the polystyrene chains were grown not only from nBuLi. (Tmeda) fed as an initiator but also from the organozinc compound efficiently in both directions.
- the calculated value of ⁇ [PS-chains]-[Li] ⁇ / [Zn] is 2.0, all the injected organic zinc is efficiently grown in both directions from not only all nBuLi injected into the polystyrene chain but also the added dihexyl zinc compound.
- a long reaction time of 8 hours was required to convert all of the styrene monomers, but the number of polystyrene polymer chains (i.e. ⁇ [PS-chains]-[Li] ⁇ / [Zn]) produced from the organozinc compound was 1.89. It
- the experiment was carried out in the same manner as in Example 1 except that the amount of styrene monomer, ie, [styrene] / [Zn], was increased from 500 to 600, 700, 800, and 900.
- the number of polystyrene polymer chains (ie, ⁇ [PS-chains]-[Li] ⁇ / [Zn]) produced from the organic zinc compound was 1.84 to 2.16, indicating that the polymer chains were efficiently grown from the zinc compound in both directions.
- the experiment was carried out in the same manner as in Example 1 except that the amount of styrene monomer, that is, [styrene] / [Zn], was reduced from 500 to 400 and 300.
- the number of polystyrene polymer chains generated from the organozinc compound ie ⁇ [PS-chains]-[Li] ⁇ / [Zn]) slightly deviated from the desired value 2.0 to 1.52 and 1.39.
- the polymer chains did not grow from all Zn-hexyl groups of the added dihexyl zinc compound, 76% and 70% of the injected Zn-hexyl groups grew, resulting in the compound having the structure of Formula 1 with considerable efficiency. It means.
- the present invention provides an organic zinc compound having a polystyrene group represented by Chemical Formula 1 by growing a polymer chain from an organic zinc compound (A-Zn-A) prepared by adding an alkyllithium compound and an amine ligand represented by Chemical Formula 5 together. It is characterized by. Scheme 2 below shows the scheme of Comparative Example 1 effectively.
- Step 1 (Hex) 2 Zn (47.1 mg, 200 ⁇ mol) was dissolved in methylcyclohexane (20 g) in a high pressure reactor, and the temperature was raised to 60 ° C.
- (EBI) ZrCl 2 (1.5 ⁇ mol, Formula 6b) and MMAO (250 ⁇ mol) were mixed in methylcyclohexane (1 mL) and the activated solution was injected into the reactor and immediately filled with ethylene at 30 bar, followed by 230 after 1 minute. Injection was continued for 1 hour at a rate of ml / min. The pressure was adjusted at 15 to 20 atmosphere levels.
- the organic zinc compound containing the produced block copolymer group was transferred to a flask, and chloroform (80 mL) and 2N hydrochloric acid (2 mL) were added thereto, followed by reflux, followed by stirring for 2 hours to decompose the organic zinc compound. Then, methanol (80 mL) was poured to precipitate the polymer material. The polymer was dispersed in ethyl acetate (150 mL), stirred with reflux for 1 hour, and then acetone (150 mL) was added and filtered to separate the polystyrene homopolymer and the block copolymer. The solid material separated by filtration was dried in a vacuum oven 130 to obtain a block copolymer. After removing the solvent from the filtrate, the remaining polymer was dried in the vacuum oven 130 to obtain a polystyrene homopolymer.
- Example Extracted PS (g (%)) Extracted PS-M n (PDI) (kDa) Anion Chain Number ( ⁇ mol) PO-M w (PDI) (kDa) Block Copolymer-M w (PDI) (kDa) 10 4.1 (39) 16.3 (1.60) 638 65.2 (3.75) 83.6 (4.81) 11 6.2 (40) 18.3 (1.64) 852 54.1 (3.62) 71.9 (4.58) 12 7.9 (38) 17.7 (1.64) 1175 46.5 (3.92) 66.8 (4.38)
- the weight average molecular weight (block copolymer-Mw) of the polymer obtained after performing two-stage anion polymerization subsequent to the weight average molecular weight (PO-Mw) of the polyethylene sample taken after the first step was increased. It can be seen that an organic zinc compound including a block copolymer group is formed (Scheme 3).
- the molecular weight increase values (DMw, 18000, 18000, 20000) coincide with the extracted polystyrene-homopolymer molecular weight (16000, 18000, 18000), and it can be confirmed that a block copolymer was formed efficiently.
- Step 1 In a high pressure reactor (benzyl) 2 Zn (49.6 mg, 200 ⁇ mol) and 1-octene (5 g) dissolved in methylcyclohexane (20 g) was added to raise the temperature to 60 °C. rac- [Me 2 Si (2-methylindenyl)] 2 ZrCl 2 (SBI) (1.0 ⁇ mol, Formula 6A) and MMAO (200 ⁇ mol) were mixed in methylcyclohexane (1 mL) and injected into the reactor. Immediately after filling ethylene with 30 bar was injected continuously for 40 minutes at a rate of 230 ml / min after 1 minute. The pressure was adjusted at 5 to 10 atmosphere levels.
- Example Extracted PS (g (%)) Extracted PS-M n (PDI) (kDa) Anion Chain Number ( ⁇ mol) PO-M w (PDI) (kDa) Block Copolymer-M w (PDI) (kDa) 13 3.8 (36) 22.0 (1.97) 473 174 (4.30) 193 (4.04) 14 5.1 (33) 21.2 (1.59) 736 138 (4.30) 158 (3.52) 15 5.3 (25) 23.0 (1.76) 904 110 (3.92) 131 (2.90) 16 3.7 (36) 21.1 (1.69) 493 131 (4.03) 150 (3.10) 17 5.3 (34) 21.3 (1.55) 732 91 (3.24) 113 (2.76) 18 5.3 (25) 22.5 (1.86) 924 77 (3.37) 87 (2.73)
- the weight average molecular weight (block copolymer-Mw) of the polymer obtained after the second step anion polymerization followed by the weight average molecular weight (PO-Mw) of the polyethylene sample taken after the first step was increased. It can be confirmed that an organic zinc compound including a block copolymer group is formed (Scheme 3).
- FIG. 2 Poly (ethylene-co-1-octene) -block-polystyrene prepared by Examples 13 (FIG. 2), Example 14 (FIG. 3), and Example 15 (FIG. 4) respectively in FIGS.
- TEM image of the block copolymer is shown.
- 5 shows a TEM image of a blend obtained by blending poly (ethylene-co-1-octene) and polystyrene at the same molecular weight and magnification as that of each block in the block copolymer of Example 15.
- the TEM images can be stained with RuO 4 to view the polystyrene domains in black.
- the TEM image of the copolymer prepared using the organic zinc compound of Examples 13 to 15 of the present invention is of a small size compared to the TEM image of the blend (Fig. 5) It can be confirmed again that the block copolymer was formed from the uniform distribution of the polystyrene domains.
- Example 6 is a poly (ethylene-co-1-octene) -block-polystyrene prepared according to Example 16. Stress-strain curves of block copolymers (a) and stress-strain curves of blends obtained by blending poly (ethylene-co-1-octene) and polystyrene at the same molecular weight and magnification as each block in the block copolymer of Example 16 Show (b). Compared to the blend, the polymer prepared according to Example 16 had a 2.7 times higher tensile strength (2.85 N / mm 2 and 7.89 N / mm 2 ) and a higher firing rate (270% and 970%). It may further prove that it is formed.
Abstract
Description
[Styrene]/[Zn] | [nBuLi·tmeda]/ [Zn] | 반응시간 (h) | Mn | Mw/Mn | {[PS-chains]-[Li]}/[Zn] | |
실시예 1 | 500 | 0.20 | 2 | 25100 | 1.52 | 1.87 |
실시예 2 | 500 | 1.0 | 2 | 18000 | 1.26 | 1.89 |
실시예 3 | 500 | 0.10 | 8 | 27900 | 1.54 | 1.97 |
실시예 4 | 600 | 0.20 | 2 | 30600 | 1.47 | 1.84 |
실시예 5 | 700 | 0.20 | 2 | 32900 | 1.49 | 2.01 |
실시예 6 | 800 | 0.20 | 2 | 35600 | 1.47 | 2.14 |
실시예 7 | 900 | 0.20 | 3 | 39600 | 1.50 | 2.16 |
실시예 8 | 400 | 0.20 | 2 | 24200 | 1.49 | 1.52 |
실시예 9 | 300 | 0.20 | 2 | 19600 | 1.43 | 1.39 |
비교예1 | 500 | 1.0 (w/o tmeda) | 2 | 52900 | 1.18 | 0 |
실시예 | (Hex)2Zn (μmol) | MAO (Al-μmol) | nBuLi (μmol) | 전환된 단량체 | |
C2H4 (g) | styrene (g) | ||||
10 | 200 | 250 | 290 | 21.3 | 10.4 |
11 | 300 | 250 | 310 | 22.3 | 15.6 |
12 | 400 | 250 | 330 | 19.9 | 20.8 |
실시예 | 추출된 PS (g (%)) | 추출된 PS-Mn (PDI)(kDa) | 음이온 사슬 개수 (μmol) | PO-Mw (PDI)(kDa) | 블록공중합체-Mw (PDI)(kDa) |
10 | 4.1 (39) | 16.3 (1.60) | 638 | 65.2 (3.75) | 83.6 (4.81) |
11 | 6.2 (40) | 18.3 (1.64) | 852 | 54.1 (3.62) | 71.9 (4.58) |
12 | 7.9 (38) | 17.7 (1.64) | 1175 | 46.5 (3.92) | 66.8 (4.38) |
실시예 | (Bezyl)2Zn(μmol) | MMAO (Al-μmol) | BuLi (μmol) | 전환된 단량체 | ||
Oct (g) | C2H4 (g) | styrene (g) | ||||
13 | 200 | 200 | 240 | 5 | 17.3 | 10.4 |
14 | 300 | 200 | 260 | 5 | 19.2 | 15.6 |
15 | 400 | 200 | 280 | 5 | 18.5 | 20.8 |
16 | 200 | 200 | 240 | 10 | 15.8 | 10.4 |
17 | 300 | 200 | 260 | 10 | 10.8 | 15.6 |
18 | 400 | 200 | 280 | 10 | 13.4 | 20.8 |
실시예 | 추출된 PS (g (%)) | 추출된 PS-Mn (PDI)(kDa) | 음이온 사슬 개수 (μmol) | PO-Mw (PDI)(kDa) | 블록공중합체-Mw (PDI)(kDa) |
13 | 3.8 (36) | 22.0 (1.97) | 473 | 174 (4.30) | 193 (4.04) |
14 | 5.1 (33) | 21.2 (1.59) | 736 | 138 (4.30) | 158 (3.52) |
15 | 5.3 (25) | 23.0 (1.76) | 904 | 110 (3.92) | 131 (2.90) |
16 | 3.7 (36) | 21.1 (1.69) | 493 | 131 (4.03) | 150 (3.10) |
17 | 5.3 (34) | 21.3 (1.55) | 732 | 91 (3.24) | 113 (2.76) |
18 | 5.3 (25) | 22.5 (1.86) | 924 | 77 (3.37) | 87 (2.73) |
Claims (13)
- 제1항에 있어서, 상기 화학식 1의 R1 및 R2는 각각 독립적으로 수소, 메틸기, 에틸기, 부틸기, 헥실기 및 옥틸기 중 어느 하나이고; Ar은 페닐기이고; A는 메틸기, 에틸기, 헥실기, 페닐기 및 벤질기 중 어느 하나인 유기 아연 화합물.
- 제1항에 있어서, 상기 유기 아연 화합물은 하기 화학식 1A로 표시되는 유기 아연 화합물:[화학식 1A]상기 화학식 1A에서, R3, R4, R5 및 R6은 각각 독립적으로 수소, 메틸기, 에틸기, 부틸기, 헥실기 및 옥틸기 중 어느 하나이고, R3 및 R4는 서로 동일하지 않으며, R5 및 R6은 서로 동일하지 않고; Ar은 페닐기이고; A는 메틸기, 에틸기, 헥실기, 페닐기 또는 벤질기이고; p 및 1-p는 반복단위체 a1을 구성하는 각 반복단위의 몰분율이며, p 는 약 0 초과 약 1 미만이고; q 및 1-q는 반복단위체 a2를 구성하는 각 반복단위의 몰분율이며, q 는 약 0 초과 약 1 미만이고; a1 및 a2의 평균값은 약 0 초과 내지 약 10,000이고; b1 및 b2의 평균값은 약 10 내지 약 1,000이다.
- 제3항에 있어서, 상기 화학식 1A의 R3 및 R4 중 어느 하나는 수소이며, 다른 하나는 메틸기, 에틸기, 부틸기 또는 헥실기이고; R5 및 R6 중 어느 하나는 수소이며, 다른 하나는 메틸기, 에틸기, 부틸기 또는 헥실기인 유기 아연 화합물.
- 올레핀 단량체를, 하기 화학식 2로 표시되는 유기 아연 존재 하에서, 전이금속 촉매로 배위 중합하여 하기 화학식 3으로 표시되는 화합물을 제조하는 제1단계; 및상기 화학식 3으로 표시되는 화합물에 연속하여 하기 화학식 4로 표시되는 알킬리튬 화합물, 하기 화학식 5로 표시되는 아민 리간드 및 스티렌계 단량체를 투입하여 음이온 중합을 수행하는 제2단계;를 포함하는 하기 화학식 1로 표시되는 유기 아연 화합물 제조 방법:[화학식 1]상기 화학식 1에서, R1 및 R2는 각각 독립적으로 수소 또는 탄소수 1 내지 20의 알킬기이고; Ar은 탄소수 6 내지 20의 아릴기이고; A는 탄소수 1 내지 20의 탄화수소기이고; a1 및 a2는 평균값이 약 0 내지 약 10,000이고; b1 및 b2는 평균값이 약 10 내지 약 1,000이다;[화학식 2](A)2Zn상기 화학식 2에서, A는 탄소수 1 내지 20의 탄화수소기이다;[화학식 3]상기 화학식 3에서, R1 및 R2는 각각 독립적으로 수소 또는 탄소수 1 내지 20의 알킬기이고; A는 탄소수 1 내지 20의 탄화수소기이고; a1 및 a2의 평균값은 약 0 내지 약 10,000이다;[화학식 4]B-Li상기 화학식 4에서, B는 탄소수 1 내지 20의 알킬기이다;[화학식 5]상기 화학식 5에서, R51 및 R52는 각각 독립적으로 탄소수 1 내지 20의 탄화수소기이고, z는 약 2 또는 약 3의 정수이다.
- 제5항에 있어서, 상기 올레핀 단량체(CH2=CH-R)는 에틸렌, 프로필렌, 1-부텐, 1-헥센, 1-옥텐, 1-데센 또는 이들의 혼합물이고, 상기 스티렌계 단량체(ArCH=CH2)는 스티렌인 유기 아연 화합물 제조 방법.
- 제5항에 있어서, 상기 올레핀 단량체(CH2=CH-R)는 프로필렌, 1-부텐, 1-헥센 및 1-옥텐 중 어느 하나; 및 에틸렌;의 혼합물이고, 스티렌계 단량체(ArCH=CH2)는 스티렌인 유기 아연 화합물 제조 방법.
- 제5항에 있어서, 상기 화학식 2에서 A는 메틸기, 에틸기, 헥실기, 페닐기 및 벤질기 중 어느 하나인 유기 아연 화합물 제조 방법.
- 제5항에 있어서, 상기 제1단계에서의 중합은 이소부탄, 헥산, 시클로헥산 및 메틸시클로헥산 중 1종 이상을 포함하는 용매를 사용한 용액 중합에 의해 수행되는 유기 아연 화합물 제조 방법.
- 제5항에 있어서, 상기 알킬리튬 화합물은 nBuLi인 유기 아연 화합물 제조 방법.
- 제5항에 있어서, 상기 화학식 5로 표시되는 아민 리간드는 R51이 메틸이고, R52가 수소이고, z가 약 2인 화합물인 유기 아연 화합물 제조 방법.
- 제5항에 있어서, 상기 알킬리튬 화합물과 상기 아민 리간드의 몰 비는 약 1 : 0.5 내지 약 1 : 1.5 인 유기 아연 화합물 제조 방법.
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