CN1204154C - Ligand of non-cyclopentadienyl single active center catalyzer for olefinic polymerization and transition metal complex - Google Patents
Ligand of non-cyclopentadienyl single active center catalyzer for olefinic polymerization and transition metal complex Download PDFInfo
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- CN1204154C CN1204154C CN02129547.6A CN02129547A CN1204154C CN 1204154 C CN1204154 C CN 1204154C CN 02129547 A CN02129547 A CN 02129547A CN 1204154 C CN1204154 C CN 1204154C
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Abstract
The present invention relates to a novel bridging ligand with the general formula (I), which is suitable for the catalysis of olefinic polymerization, and a metal complex thereof. The metal complex is used as a catalyst precursor for the joint action with a catalyst promoter to catalyze olefinic polymerization and has favorable catalytic activity. Obtained resin has the characteristic of wideness or bimodal molecular weight distribution.
Description
Technical field
The present invention relates to a kind of ligand compound that is used for olefin polymerization catalysis, by this ligand compound synthetic transition metal complex and the olefin polymerization catalysis that comprises transition metal complex, the invention still further relates to the application of described olefin polymerization catalysis in olefinic polymerization.
Technical background
Along with the continuous development of polyolefin industry, the polyolefin catalyst of many types has appearred, mainly contain Ziegler-Natta catalyst, metallocene catalyst, non-cyclopentadienyl single site catalyst.Since the invention of ziegler-natta catalyzed system, occurred a large amount of improvement catalyzer, but because its catalytic activity is on the low side, and the copolymerization performance of catalyzer is not ideal enough, therefore the metallocene catalyst of having been found has in the recent period in the last few years replaced.Typical metallocene catalyst is made up of the transistion metal compound with one or more cyclopentadienyl ring-type ligands, when its when using as the aikyiaiurnirsoxan beta of promotor, have very high activity.But the molecular weight distribution of this class catalyzer resulting polymers is narrower, and the general polyvinyl weight-average molecular weight of gained only is 2～3 with the ratio of number-average molecular weight, and the processing characteristics that this has just restricted it widely can not satisfy the requirement of some Industrial products.
From the nineties, the non-cyclopentadienyl single site catalyst has obtained great development and concern.The non-cyclopentadienyl single site catalyst can be divided into late transition metal catalyst and early transition metal catalyzer two big classes.Late transition metal catalyst mainly contains Ni, Pd diimine catalyst system (WO9623010), Fe diimine pyridine catalyst system (WO9827124, WO9830612) etc.; Early stage, transition-metal catalyst mainly contained oxine Ti system (CN1188481A), salicylidene imido grpup transition metal catalyst system (CN1199052A), nitrogen heterocyclic titanium catalyst system (EP0816387A1), chelating two amido Ti catalyst system (J.Mol.Catal.A:Chemical, 128,201-214,1998) or the like.
The catalyst system of listing from above can see that the innovation of non-cyclopentadienyl single site catalyst mainly concentrates on the part.By different structure and sterically hindered part and metallic compound coordination reaction, form metal complexes, be catalyst precursor with this metal complexes, under the promotor effect, form the single site catalysts system.This class catalyzer also is good alpha-olefin polymerization catalyst undoubtedly, the performance of its performance and metallocene catalyst is very approaching, be that activity of such catalysts is higher and can introduce comonomer equably, but the problem that the molecular weight distribution that equally also has polymkeric substance is narrower, for example the disclosed molecular weight distribution of CN1199052A (Mw/Mn) only is about 2, about the disclosed polyvinyl molecular weight distribution of CN1188481A (Mw/Mn) 2.5-3.7, narrow like this molecular weight distribution will inevitably impact polymer processing characteristics, thereby restricted the Application Areas of polymkeric substance widely.
Summary of the invention
The inventor has found a kind of double salicylaldehyde group with imine moiety that contracts that contains, the transition metal complex that transition metal such as itself and titanium, zirconium form is during as the active ingredient of olefinic polyreaction, has advantages of high catalytic activity, and prepared olefin polymer has wider molecular weight distribution, particularly when being used for vinyl polymerization, the molecular weight distribution of resin (Mw/Mn) can reach 73.4, and have broad peak or a double-hump characteristics, improve the processing characteristics of polymkeric substance widely, widened its Application Areas.
The general structure I of new part of the present invention is expressed as follows:
General formula I
Wherein: R
1-R
8Identical or different, be hydrogen atom, halogen atom, C
1-C
20Aliphatic group, C
3-C
20Cyclic hydrocarbon radical or C
6-C
20Aryl radical, arbitrary hydrogen on its described alkyl or carbon atom can randomly be replaced by heteroatomss such as halogen atom, oxygen, nitrogen, boron, sulphur, phosphorus, silicon, germanium or tin atoms.
R
1-R
8Examples of groups has: hydrogen atom, methyl, ethyl, n-propyl, sec.-propyl, normal-butyl, isobutyl-, the tertiary butyl, n-pentyl, isopentyl, tert-pentyl, n-hexyl, isohexyl, uncle's hexyl, phenyl, the phenyl that nitro replaces, halogenophenyl, alkyl-substituted phenyl, naphthyl, xenyl, trityl, diphenyl-methyl, the tristane base, 2-phenyl-sec.-propyl, pyridyl, pyrryl, Azacyclyl, the oxa-cyclic group, the methyl-silicane base, dimetylsilyl, trimethyl silyl, the ethyl silicane base, the diethylsilane base, triethylsilyl, the diphenylmethylsilane base, the trityl group silyl, methoxyl group, oxyethyl group, positive propoxy, isopropoxy, uncle's propoxy-, methylthio group, ethylmercapto group, phenoxy group, thiophenyl etc., wherein preferred hydrogen atom, methyl, ethyl, n-propyl, sec.-propyl, normal-butyl, isobutyl-, the tertiary butyl, n-pentyl, isopentyl, tert-pentyl, n-hexyl, isohexyl, uncle's hexyl, phenyl, the tristane base, 2-phenyl-sec.-propyl, methoxyl group, oxyethyl group, uncle's propoxy-.
R
9-R
10Identical or different, be selected from replacement or unsubstituted C
1-C
20Aliphatic group or C
6-C
30Aryl radical, the example comprises: phenyl, halogenophenyl, alkyl-substituted phenyl, naphthyl, xenyl, trityl, diphenyl-methyl that methyl, ethyl, n-propyl, sec.-propyl, normal-butyl, isobutyl-, the tertiary butyl, n-pentyl, isopentyl, tert-pentyl, n-hexyl, isohexyl, uncle's hexyl, phenyl, nitro replace, phenyl, halogenophenyl, alkyl-substituted phenyl, naphthyl, xenyl, trityl that wherein preferred n-hexyl, phenyl, nitro replace.
R
1-R
10In two or more groups can be keyed to ring mutually.
Y is a bridge joint group, is C
1-C
20Aliphatic group or C
6-C
20Aryl radical, the arbitrary hydrogen on its described alkyl or carbon atom can randomly be replaced by heteroatomss such as halogen atom, oxygen, nitrogen, boron, sulphur, phosphorus, Siliciumatoms.As: methylene radical, ethylidene, propylidene, isopropylidene, butylidene, isobutylidene, inferior phenmethyl, inferior styroyl, inferior hydrocinnamyl, inferior diphenyl-methyl, inferior 2-methylbenzene methyl, inferior 3-methylbenzene methyl, inferior 4-methylbenzene methyl, ethylene group, trimethylene base, fourth support base, 1,2-benzene two bases, 1,3-benzene two bases, 1,4-benzene two bases, substituted benzene two bases, Sauerstoffatom, sulphur atom, inferior 2-oil of mirbane methyl, inferior 3-oil of mirbane methyl, inferior 4-oil of mirbane methyl, inferior 2-amino-benzene methyl, inferior 3-amino-benzene methyl, inferior 4-amino-benzene methyl.Wherein preferred methylene radical, ethylidene, propylidene, butylidene, ethylene group, isopropylidene, isobutylidene, phenylene, substituted phenylene.
Concrete ligand compound can comprise the example of following structure:
The above-mentioned ligand compound of the present invention can be R by compound and the general formula with general formula (I-a)
9NH
2(or/and R
10NH
2) primary amine react, slough a part water and make, wherein R
9-R
10Such as general formula (I) definition,
General formula I-a
R among general formula I-a
1-R
8, and the same general formula of Y (I) define.
Specifically can adopt following preparation process: in reaction flask, add solvent, general formula I-a compound and primary amine, stirring reaction, collecting precipitation or remove and desolvate can obtain the part crude product.Temperature of reaction is 0 ℃ of boiling point to solvent for use, the reaction raw materials difference, and the reaction times is also different, is not wait in 1 hour to several days, uses water trap to dewater in case of necessity.The mol ratio of general formula (I-a) compound and primary amine is 1.0-1.2.The reaction solvent for use can be polar solvent, non-polar solvent or both mixed solvents.Described polar solvent can be alcohol, ether or ester etc.; Non-polar solvent can be hydrocarbon compound, benzene etc.When using the mixed solvent of polar solvent and non-polar solvent, the mixed solvent of preferred alcohols compounds and benzene, the mixed solvent of preferred especially absolute alcohol compounds and benzene, aforesaid alcohol compound is preferably anhydrous methanol, dehydrated alcohol, propyl alcohol, Virahol, 95% ethanol.
Also can add a spot of organic acid in the reaction, be preferably formic acid, acetate etc., its add-on is organic acid with the molar ratio computing: primary amine=1: 10-1: 100.
The present invention also provides a kind of transition metal complex that adopts following general structure II to represent:
General formula I I
Wherein M is the transition metal of 3-11 family in the periodic table of elements, is preferably scandium, titanium, zirconium, hafnium, vanadium, niobium, tantalum, iron, cobalt, nickel, palladium, platinum; Be preferably titanium, zirconium, hafnium, vanadium transition metal especially.
N is＞1 integer;
M is the integer that satisfies the M valence state.
X is selected from a kind of in hydrogen, halogen, alkyl, substituted hydrocarbon radical,-oxyl, fragrant-oxyl, acid group, the amido, is preferably a kind of in hydrogen atom, halogen, alkyl, allyl group, cyclopentadienyl, alkoxyl group, the fragrant-oxyl.Most preferably be chlorine, bromine, iodine, methoxyl group, oxyethyl group, isopropoxy, isobutoxy, butoxy, phenoxy group, oxy-o-cresyl, m-phenoxy, to phenoxy group, naphthyloxy.When m is 2 or when bigger, a plurality of X groups can be identical or different;
R wherein
1-R
8, R
9And R
10, define in the same general formula of Y group (I).
R
1-R
8Identical or different, be hydrogen atom, halogen atom, C
1-C
20Aliphatic group, C
3-C
20Cyclic hydrocarbon radical or C
6-C
20Aryl radical, arbitrary hydrogen on its described alkyl or carbon atom can randomly be replaced by heteroatomss such as halogen atom, oxygen, nitrogen, boron, sulphur, phosphorus, silicon, germanium or tin atoms.R
1-R
8Examples of groups has: hydrogen atom, methyl, ethyl, n-propyl, sec.-propyl, normal-butyl, isobutyl-, the tertiary butyl, n-pentyl, isopentyl, tert-pentyl, n-hexyl, isohexyl, uncle's hexyl, phenyl, the phenyl that nitro replaces, halogenophenyl, alkyl-substituted phenyl, naphthyl, xenyl, trityl, diphenyl-methyl, the tristane base, 2-phenyl-sec.-propyl, pyridyl, pyrryl, Azacyclyl, the oxa-cyclic group, the methyl-silicane base, dimetylsilyl, trimethyl silyl, the ethyl silicane base, the diethylsilane base, triethylsilyl, the diphenylmethylsilane base, the trityl group silyl, methoxyl group, oxyethyl group, positive propoxy, isopropoxy, uncle's propoxy-, methylthio group, ethylmercapto group, phenoxy group, thiophenyl etc., wherein preferred hydrogen atom, methyl, ethyl, n-propyl, sec.-propyl, normal-butyl, isobutyl-, the tertiary butyl, n-pentyl, isopentyl, tert-pentyl, n-hexyl, isohexyl, uncle's hexyl, phenyl, the tristane base, 2-phenyl-sec.-propyl, methoxyl group, oxyethyl group, uncle's propoxy-.
R
9-R
10Identical or different, be selected from replacement or unsubstituted C
1-C
20Aliphatic group or C
6-C
30Aryl radical, the example comprises: phenyl, halogenophenyl, alkyl-substituted phenyl, naphthyl, xenyl, trityl, diphenyl-methyl that methyl, ethyl, n-propyl, sec.-propyl, normal-butyl, isobutyl-, the tertiary butyl, n-pentyl, isopentyl, tert-pentyl, n-hexyl, isohexyl, uncle's hexyl, phenyl, nitro replace, phenyl, halogenophenyl, alkyl-substituted phenyl, naphthyl, xenyl, trityl that wherein preferred n-hexyl, phenyl, nitro replace.
R
1-R
10In two or more groups can be keyed to ring mutually.
Y is a bridge joint group, is C
1-C
20Aliphatic group or C
6-C
20Aryl radical, the arbitrary hydrogen on its described alkyl or carbon atom can randomly be replaced by heteroatomss such as halogen atom, oxygen, nitrogen, boron, sulphur, phosphorus, Siliciumatoms.As: methylene radical, ethylidene, propylidene, isopropylidene, butylidene, isobutylidene, inferior phenmethyl, inferior styroyl, inferior hydrocinnamyl, inferior diphenyl-methyl, inferior 2-methylbenzene methyl, inferior 3-methylbenzene methyl, inferior 4-methylbenzene methyl, ethylene group, trimethylene base, fourth support base, 1,2-benzene two bases, 1,3-benzene two bases, 1,4-benzene two bases, substituted benzene two bases, Sauerstoffatom, sulphur atom, inferior 2-oil of mirbane methyl, inferior 3-oil of mirbane methyl, inferior 4-oil of mirbane methyl, inferior 2-amino-benzene methyl, inferior 3-amino-benzene methyl, inferior 4-amino-benzene methyl.Wherein preferred methylene radical, ethylidene, propylidene, butylidene, ethylene group, isopropylidene, isobutylidene, phenylene, substituted phenylene.
Metal complexes of the present invention comprises the example with following structure:
Transition metal complex of the present invention (general formula I I) can adopt following synthetic method:
After the part of general formula I dissolved, be cooled to-78 ℃-0 ℃, preferably less than-20 ℃ in tetrahydrofuran solvent.Add an amount of butyllithium, react after 1 hour, slowly heat up, stirring reaction is more than 4 hours under the room temperature; And then at-78 ℃-0 ℃, preferably less than under-20 ℃, reaction solution slowly is added drop-wise in the halid tetrahydrofuran solution of transition metal, react after 1 hour, be warming up to room temperature reaction more than 4 hours, then reflux more than 4 hours; Remove and desolvate,, filter, behind the filtrate evaporate to dryness, obtain crude product, can obtain final product by washing or recrystallization with the methylene dichloride dissolving.
Above-mentioned tetrahydrofuran solvent also can be selected a kind of in anhydrous diethyl ether, methylene dichloride, chloroform, benzene, toluene, the hexane or their mixture for use.
The present invention also provides a kind of catalyzer that is used for olefinic polymerization, and it comprises the transition metal complex of above-mentioned general formula I I and the reaction product of cocatalyst component.
Wherein said promotor is for being selected from following compound or their mixture at least:
1. the Organoaluminoxy alkane of a following general structure:
Or
Wherein R represents alkyl, is preferably methyl, ethyl, propyl group, butyl, most preferably is methyl or ethyl.A represents the integer of 4-30, is preferably the integer of 10-30.
The molar ratio range of metal is 0.01 in described Organoaluminoxy alkane and the general formula I I transition metal complex: 1-100000: 1, and preferable range is 1: 1-50000: 1;
2. organometallic compound, it can be the organic compound of the 1st, 2,12,13 family's metals in the periodic table of elements, example has sodium hydride, potassium hydride KH, alkyl magnesium, haloalkyl magnesium, zinc alkyl(s), aluminum alkyls, haloalkyl aluminium etc., they with general formula I I in metal molar be 0.01 than scope: 1-100000: 1, preferable range is 1: 1-50000: 1;
3. the anionic acid salt of the big steric hindrance of weak coordination, as four (pentafluorophenyl group) lithium tetraborate, four (pentafluorophenyl group) lithium aluminate etc., it with general formula I I in metal molar be 0.01 than scope: 1-1000: 1, preferable range is 1: 1-10: 1.
When polymerization, promotor together adds or adds respectively with the transition metal complex of general formula I I and mixes use in the polymerization reactor.
Wherein the employed solvent of polymerization is selected from alkyl or aromatic hydrocarbon or halohydrocarbon.Be preferably a kind of in hexane, pentane, heptane, benzene, toluene, methylene dichloride, chloroform, the ethylene dichloride or their mixture, most preferably be a kind of in hexane, toluene, the heptane or their mixture.
The concentration of the transition metal complex of general formula I I when polymerization is 1 * 10
-8Mol-1 * 10
-3Mol, preferred concentration range for are 1 * 10
-8Mol-1 * 10
-5Mol.
Polymerization temperature is-100 ℃-150 ℃, is preferably-78 ℃-100 ℃.
Polymerization pressure is 0.1-10.0MPa, preferred 0.1-2.0MPa.
Catalyst system of the present invention can be used on the various polymerization process, comprises vapour phase polymerization and liquid polymerization, and slurry polymerization, solution polymerization, mass polymerization are arranged.
Catalyst system of the present invention can be used for the polymerization or the copolymerization of alkene, be specially adapted to that ethylene homo closes or the copolymerization of ethene and other alpha-olefin, wherein alpha-olefin adopts a kind of in propylene, butylene, amylene, hexene, octene, the 4-methylpentene-1.
It is worthy of note that catalyst body of the present invention has shown advantages of high catalytic activity when tying up to the polymerization that is used for ethene or copolymerization, compare with existing metallocene catalyst, non-cyclopentadienyl single site catalyst simultaneously, can adopt and use aluminum alkyls as cocatalyst component, need not or reduce the consumption of aikyiaiurnirsoxan beta MAO, reduced the cost of catalyzer, and prepared ethene polymers or multipolymer have wider molecular weight distribution, its Mw/Mn can reach 73.4, improve the processing characteristics of polymkeric substance widely, widened its Application Areas.
Embodiment
Embodiment given below is for the present invention is described, rather than limits the invention.Testing method and testing tool:
1, C, H, N, O ultimate analysis: the EA1112 elemental analyser of Italian CE;
2, mass spectrum: the QUATTRO II chromatograph mass spectrometer of MICRO MASS;
3,
1H NMR: Switzerland AVANCE 400M nuclear magnetic resonance analyser;
4, molecular weight and molecular weight distribution: Polymer Laboratory, the PL-GPC220 gel permeation chromatograph, 1,2, the 4-trichlorobenzene is a solvent;
5, the polymkeric substance degree of branching: U.S. Buddhist nun high-tensile strength Magna-IR 760 infrared spectrometers.
Embodiment 1
Synthesizing of ligand L 1
(1) 4,4 '-dimethyl-2,2 '-propylidene-biphenol synthetic
In the 250ml there-necked flask, add the p-cresol of 128ml (600mmol) and the positive propionic aldehyde of 8.8ml (60mmol), stir, drip the concentrated hydrochloric acid of 8ml when being heated to 63 ℃, solution becomes yellow immediately, and temperature rises to 85 ℃, keeps reaction 5 hours, be orange solution, underpressure distillation is with residue 80ml chloroform: the mixed solvent dissolving of 80ml sherwood oil, separate out post precipitation, filter out precipitation, vacuum-drying obtains milky by 4,4 '-dimethyl-2,2 '-propylidene-biphenol product.
(2) 5,5 '-dimethyl-3,3 '-propylidene-double salicylaldehyde synthetic
Under the nitrogen protection, in the there-necked flask of 250ml, add above-mentioned synthetic 4,4 '-dimethyl-2,2 '-propylidene-biphenol 7.68g (30mmol) with the benzene dissolving that 60ml refluxed, stirs, and under the room temperature, adds the anhydrous SnCl of 2.88ml (24mmol)
4, solution becomes yellow, slowly drips the Tributylamine solution that is dissolved in the 22.9ml (96mmol) in the 80ml benzene, after dropwising, is warming up to 58 ℃, adds the Paraformaldehyde 96 of 17.28g (576mmol), back flow reaction 10 hours.After the cooling, reaction solution is poured in the 1000ml distilled water, stirred, regulating pH value with the hydrochloric acid of 2N is 2, then, adds the 600ml extracted with diethyl ether, collects organic phase, and with saturated NaCl washing organic phase, uses anhydrous Na then
2SO
4Dry.With Na
2SO
4Filter, after the filtrate normal pressure steams solvent, evaporated under reduced pressure with resistates anhydrous methanol recrystallization, will precipitate collection again, and drying gets 5 of 1.08g (3.46mmol, yield are 11.5%) buff powder, 5 '-dimethyl-3,3 '-propylidene-double salicylaldehyde product.
Structural formula is as follows:
1H NMR(CDCl
3)：0.84-2.24(m，12H)，7.11-7.24(m，4H)，9.73(s，
2H)，11.13(s，2H)。
EI-mass spectrum: 312M
+
Ultimate analysis: measured value: C:73.06%, H:6.67%
Theoretical value: C:73.08%, H:6.41%
(3) synthetic ligands L1
Under the nitrogen atmosphere, in the 250ml there-necked flask, add 5 of above-mentioned synthetic 0.43g (1.38mmol), 5 '-dimethyl-3,3 '-propylidene-double salicylaldehyde, use the 40ml dissolve with methanol, add the aniline of 0.3ml (3.31mmol) and the formic acid of 0.2ml then, stirring at room reaction 24 hours.Filter out precipitation, and vacuum-drying, obtain ligand L 1 yellow powder of 0.48g (1.04mmol, yield are 75.4%).
Its structural formula is as follows:
Ligand L 1
1H NMR(CDCl
3)：0.91-2.24(m，12H)，6.99-7.33(m，14H)，8.49(s，
2H)，13.42(s，2H)。
EI-mass spectrum: 462M
+
Ultimate analysis: measured value: C:79.88%, H:6.61%, N:5.94%
Theoretical value: C:80.52%, H:6.49%, N:6.06%
Embodiment 2
Synthetic ligands L2
Under the nitrogen atmosphere, in the 250ml there-necked flask, add 0.51g (1.63mmol) and press embodiment 1 method synthetic 5,5 '-dimethyl-3,3 '-propylidene-double salicylaldehyde, use the 40ml dissolve with methanol, add the hexahydroaniline of 0.45ml (3.91mmol) and the formic acid of 0.2ml then, stirring at room reaction 24 hours.Filter out precipitation, and vacuum-drying, obtain ligand L 2 yellow powders of 0.48g (1.04mmol, yield are 75.4%).
Its structural formula is as follows:
Ligand L 2
EI-mass spectrum: 474M
+
Embodiment 3
Synthetic metal complexes (L1)
3Zr
2Cl
4
Under the nitrogen atmosphere, in there-necked flask, add 0.70g (1.52mmol) and press embodiment 1 method synthetic ligand L 1, add the dissolving of 30ml tetrahydrofuran (THF), be cooled to then below-70 ℃, slowly dripping 1.33ml (2.13mmol) is n-butyllithium solution, reaction is 1 hour under this temperature, slowly is warming up to room temperature, reacts 4 hours; This liquid is transferred in the constant voltage minim pipette,, slowly be added drop-wise to and be dissolved with 0.24g (1.00mmol) ZrCl below-70 ℃
4The tetrahydrofuran solution of 30ml in, after dripping off, rise to room temperature gradually, then reacted about 18 hours, then, back flow reaction is 5 hours again; Underpressure distillation behind the evaporate to dryness, with the dissolving of 40ml methylene dichloride, filters out insolubles, and filtrate is evaporated under reduced pressure again, after the anhydrous diethyl ether washing, drains, and obtains 0.70g (0.41mmol, yield 80.9%) metal complexes (L1)
3Zr
2Cl
4The sorrel powder.
Its structural formula is as follows:
Metal complexes (L1)
3Zr
2Cl
4
Embodiment 4
Synthetic metal complexes [(L1) ZrCl
2]
n
Under the nitrogen atmosphere, in there-necked flask, add 0.66g (1.43mmol) and press embodiment 1 method synthetic ligand L 1, add the dissolving of 30ml tetrahydrofuran (THF), be cooled to then below-70 ℃, slowly dripping 1.87ml (3mmol) is n-butyllithium solution, reaction is 1 hour under this temperature, slowly is warming up to room temperature, reacts 4 hours; This liquid is transferred in the constant voltage minim pipette,, slowly be added drop-wise to and be dissolved with 0.34g (1.43mmol) ZrCl below-70 ℃
4The tetrahydrofuran solution of 30ml in, after dripping off, rise to room temperature gradually, then reacted 1 day, then, back flow reaction is 5 hours again; Underpressure distillation behind the evaporate to dryness, with the dissolving of 40ml methylene dichloride, filters out insolubles, and filtrate is evaporated under reduced pressure again, after the anhydrous diethyl ether washing, drains, and obtains 0.63g (1.00mmol, yield 69.9%) metal complexes [(L1) ZrCl
2]
nThe sorrel powder.
Its structural formula is as follows:
Metal complexes [(L1) ZrCl
2]
n
Embodiment 5
Synthetic metal complexes (L2)
3Zr
2Cl
4
Under the nitrogen atmosphere, in there-necked flask, add 0.55g (1.16mmol) and press embodiment 2 method synthetic ligand L 2, add the dissolving of 30ml tetrahydrofuran (THF), be cooled to then below-70 ℃, slowly drip 1.05ml (1.62mmol) n-butyllithium solution, reaction is 1 hour under this temperature, slowly is warming up to room temperature, reacts 4 hours; This liquid is transferred in the constant voltage minim pipette,, slowly be added drop-wise to and be dissolved with 0.18g (0.77mmol) ZrCl below-70 ℃
4The tetrahydrofuran solution of 30ml in, after dripping off, rise to room temperature gradually, then reacted 1 day, then, back flow reaction is 5 hours again; Underpressure distillation behind the evaporate to dryness, with the dissolving of 40ml methylene dichloride, filters out insolubles, and filtrate is evaporated under reduced pressure again, after the anhydrous diethyl ether washing, drains, and obtains 0.53g (0.61mmol, yield 52.6%) metal complexes (L2)
3Zr
2Cl
4The sorrel powder.
Its structural formula is as follows:
Metal complexes (L2)
3Zr
2Cl
4
Polymerization result
Embodiment 6
After blowing row displacement with ethene, in the 2L polymermaking autoclave, add the 500ml hexane, charge into the ethene of 0.3MPa, stirred saturated 10 minutes, bleed off ethylene gas, add the 500ml hexane again, what add the methylaluminoxane (MAO) of 12.5mmol (in the aluminium atom) and 0.002mmol (in zirconium atom) simultaneously presses embodiment 3 method synthetic title complexs (L1)
3Zr
2Cl
4, charge into ethene to reaction pressure 0.3MPa, kept the 0.3MPa ethylene reaction 10 minutes under 25 ℃, polyreaction is put pressure after finishing, blowing, the powder of collected polymer, drying obtains the 7.0g polymkeric substance.The results are shown in Table 1.
Embodiment 7
Carry out polyreaction according to the mode identical with embodiment 6, it is promotor that difference only is to use 4mmol (in the aluminium atom) triethyl aluminum (TEA) to replace methylaluminoxane (MAO).The results are shown in table 1.
Embodiment 8
After blowing row displacement with ethene, add the 1000ml hexane in the 2L polymermaking autoclave, the methylaluminoxane (MAO) and the 0.01mmol (in zirconium atom) that add 10.2mmol (in the aluminium atom) simultaneously press embodiment 4 method synthetic title complex [(L1) ZrCl
2]
n, charge into ethene to 0.4MPa, in 6 minutes, be warming up to 70 ℃, pressurising also is maintained until 1.0MPa ethene, reacts 30 minutes, and polyreaction is put pressure after finishing, blowing, the powder of collected polymer, drying obtains the 4.5g polymkeric substance.The results are shown in Table 1.The polymkeric substance of gained adopts gel permeation chromatograph to measure its molecular weight and molecular weight distribution, and its data are Mn:6173, Mw/Mn:73.4, and molecular weight distribution curve is wide distribution shape.
Embodiment 9
Carry out polyreaction according to the mode identical with embodiment 6, difference is to use 0.002mmol by embodiment 5 method synthetic title complexs (L2)
3Zr
2Cl
4Replace title complex (L1)
3Zr
2Cl
4The results are shown in table 1.
Table 1. polymerization result
| Example | Metal complexes | Title complex consumption (mmol) | MAO consumption (mmol) | Reaction times (min) | Temperature of reaction (℃) | Ethylene pressure (MPa) | Polymer solvent | Dry powder weight (g) | Active (gPE/molZr.h) | Mn | Mw/Mn |
| 6 | (L1) 3Zr 2Cl 4 | 0.002 | 12.5 | 10 | 25 | 0.3 | Hexane | 7.0 | 2.1×10 7 | / | / |
| 7 | (L1) 3Zr 2Cl 4 | 0.002 | 4(TEA) | 10 | 25 | 0.3 | Hexane | 4.2 | 1.3×10 7 | / | / |
| 8 | [(L1)ZrCl 2] n | 0.01 | 10.2 | 30 | 70 | 1 | Hexane | 4.5 | 9×10 5 | 6173 | 73.4 |
| 9 | (L2) 3Zr 2Cl 4 | 0.002 | 10.2 | 10 | 25 | 0.3 | Hexane | 10.0 | 3.0×10 7 | / | / |
Claims (8)
1, the ligand compound that is used for olefin polymerization catalysis has following general formula (I):
R wherein
1-R
8Identical or different, be hydrogen atom, halogen atom, C
1-C
20Aliphatic group, C
3-C
20Cyclic hydrocarbon radical or C
6-C
20Aryl radical, arbitrary hydrogen on its described alkyl or carbon atom can be randomly replaced by halogen atom, oxygen, nitrogen, boron, sulphur, phosphorus, silicon, germanium or tin atom heteroatoms;
R
9-R
10Identical or different, be selected from replacement or unsubstituted C
1-C
20Aliphatic group or C
6-C
30Aryl radical;
R
1-R
10In two or more groups can be incorporated into ring;
Y is a bridge joint group, is C
1-C
20Aliphatic group or C
6-C
20Aryl radical, the arbitrary hydrogen on its described alkyl or carbon atom can be randomly replaced by halogen atom, oxygen, nitrogen, boron, sulphur, phosphorus, Siliciumatom heteroatoms.
2, ligand compound according to claim 1 is characterized in that, described R
1-R
8Be selected from hydrogen atom, methyl, ethyl, n-propyl, sec.-propyl, normal-butyl, isobutyl-, the tertiary butyl, n-pentyl, isopentyl, tert-pentyl, n-hexyl, isohexyl, uncle's hexyl, phenyl, tristane base, 2-phenyl-sec.-propyl, methoxyl group, oxyethyl group or uncle's propoxy-.
3, ligand compound according to claim 1 is characterized in that, described R
9-R
10Be selected from phenyl, halogenophenyl, alkyl-substituted phenyl, naphthyl, xenyl or the trityl of n-hexyl, phenyl, nitro replacement.
4, ligand compound according to claim 1 is characterized in that, described Y is selected from methylene radical, ethylidene, propylidene, butylidene, ethylene group, isopropylidene, isobutylidene, phenylene or substituted phenylene.
5, a kind of transition metal complex that is used for olefinic polymerization has following general formula (II):
Wherein:
M is titanium, zirconium, hafnium, vanadium, niobium or tantalum,
N is＞1 integer,
M is the integer that satisfies the M valence state,
R
1-R
8, R
9-R
10, the definition in Y such as the general formula (I),
X is selected from a kind of in hydrogen, halogen, alkyl, substituted hydrocarbon radical,-oxyl, fragrant-oxyl, acid group, the amido,
When m is 2 or when bigger, a plurality of X groups can be identical or different.
6, transition metal complex according to claim 5, it is characterized in that in the general formula (II) X be chlorine, bromine, iodine, methoxyl group, oxyethyl group, isopropoxy, isobutoxy, butoxy, phenoxy group, oxy-o-cresyl, m-phenoxy, to phenoxy group or naphthyloxy.
7, a kind of catalyzer that is used for olefinic polymerization, it comprises:
A) transition metal complex of general formula (II) expression and
B) at least aly be selected from following compound:
I) organometallic compound
Ii) Organoaluminoxy compound
Iii) can with the right compound of transition metal complex reacting forming ion of general formula (II).
8, a kind of vinyl polymerization catalysis process is characterized in that it carries out vinyl polymerization or copolymerization in the presence of the described olefin polymerization catalysis of claim 7.
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| CN02129547.6A CN1204154C (en) | 2002-09-03 | 2002-09-03 | Ligand of non-cyclopentadienyl single active center catalyzer for olefinic polymerization and transition metal complex |
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|---|---|---|---|
| CN02129547.6A CN1204154C (en) | 2002-09-03 | 2002-09-03 | Ligand of non-cyclopentadienyl single active center catalyzer for olefinic polymerization and transition metal complex |
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| Country | Link |
|---|---|
| CN (1) | CN1204154C (en) |
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