JP2013067701A - Solid catalyst component for olefin polymerization, catalyst for olefin polymerization, and method for producing olefin polymer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a solid catalyst component for olefin polymerization, having high stereoregularity and high activity, and to provide a catalyst for the olefin polymerization.SOLUTION: The solid catalyst component for the olefin polymerization includes titanium, magnesium, a halogen and a compound (A) represented by the formula: RnX=C(COOR)(COOR). The catalyst for the olefin polymerization is formed out of the solid catalyst component, an organoaluminum compound and an external electron-donating compound.

Description

  The present invention provides a solid catalyst component for olefin polymerization, a catalyst for olefin polymerization, which can obtain an olefin polymer having an appropriate molecular weight distribution in a high yield while maintaining high polymerization activity and stereoregularity. The present invention relates to a method for producing an olefin polymer.

  Conventionally, in the polymerization of olefins such as propylene, a solid catalyst component containing magnesium, titanium, an electron donating compound and halogen as essential components is known. Many methods for polymerizing or copolymerizing olefins in the presence of an olefin polymerization catalyst comprising the solid catalyst component, an organoaluminum compound and an organosilicon compound have been proposed.

  For example, Patent Document 1 (Japanese Patent Laid-Open No. 57-63310) discloses a solid titanium catalyst component on which a specific electron donor is supported, an organoaluminum compound as a promoter component, and at least one Si-OR ( In the formula, it is described that when a silicon compound having R is a hydrocarbon group, excellent polymerization activity and stereospecificity are expressed, and as the specific electron donating component, Patent Document 2 ( JP-A-58-83006) discloses the use of phthalate esters.

  Further, for example, Patent Document 3 (Japanese Patent Application Laid-Open No. 2004-91513) discloses a solid catalyst component for olefin polymerization using malonic acid diester as a specific electron donating component. When a catalyst system composed of such a solid catalyst component using malonic acid ester is used for propylene polymerization, the stereoregularity of the resulting polypropylene is not at a sufficiently high level as a whole, and high rigidity is required. Application to injection-molded bodies and the like is difficult, and it has been mainly used for general-purpose resins whose required level of mechanical strength is not so high. In addition, since the activity against hydrogen is relatively high, when producing a grade such as a sheet that requires a low melt flow, propylene polymerization is carried out in a state where the amount of hydrogenation is small, so that the polymerization activity decreases. There was a problem such as, and further improvement was needed.

  On the other hand, as another attempt, various studies have been made on electron donors having a skeleton other than carbon. For example, Patent Document 4 (Japanese Patent Laid-Open No. 2008-533243) discloses a technique using an electron donor containing nitrogen, and Patent Document 5 (Japanese Patent Laid-Open No. 2010-529268) includes a sulfonyl group as a donating group. The technique used is disclosed. However, the technology using these compounds is expected to further improve both activity and stereoregularity.

JP 57-63310 A JP 58-83006 A JP-A-60-130607 JP 2008-533243 A JP 2010-529268 A

  As a catalyst used for stereoregular polymerization of olefins, various polymerization performances such as activity, stereoregularity, molecular weight distribution, sustained activity, MFR controllability (hydrogen responsiveness), bulk density, etc. are required. Because there are differences in required performance depending on the application, various solid catalyst components and catalysts having different characteristics are required. The molecular weight distribution of a polymer used for general purposes is required to be controllable, for example, in the range of about 4 to 7 in terms of Mw / Mn value, and other performance is excellent in that range, that is, crystallinity of a certain degree or more. It is said that a solid catalyst component exhibiting a high polymerization activity to some extent is most practical.

  Therefore, an object of the present invention is to meet the above needs by obtaining an olefin polymer having an appropriate Mw / Mn value molecular weight distribution and high stereoregularity without impairing moldability and having high polymerization activity. An object of the present invention is to provide a novel solid catalyst component for olefin polymerization, a catalyst for olefin polymerization, and a method for producing an olefin polymer using the same.

  Under such circumstances, the present inventors have conducted intensive studies and found that an olefin polymerization catalyst containing titanium, magnesium, halogen and a compound having a specific structure can solve the above-mentioned problems. It came to complete.

That is, the present invention provides titanium, magnesium, halogen and the following formula (1);
R ¹ _n X = C (COOR ² ) (COOR ³ ) (1)
(In the formula, R ¹ is a hydrogen atom, a halogen atom, a linear alkyl group having 1 to 20 carbon atoms, a branched alkyl group having 3 to 20 carbon atoms, a vinyl group, or a linear alkenyl group having 3 to 20 carbon atoms. Or a branched alkenyl group, a C1-C20 linear halogen-substituted alkyl group, a C3-C20 branched halogen-substituted alkyl group, a C2-C20 linear halogen-substituted alkenyl group, a C3-C20 Branched halogen-substituted alkenyl groups, cycloalkyl groups having 3 to 20 carbon atoms, cycloalkenyl groups having 3 to 20 carbon atoms, halogen-substituted cycloalkyl groups having 3 to 20 carbon atoms, halogen-substituted cycloalkenyl groups having 3 to 20 carbon atoms , An aromatic hydrocarbon group having 6 to 24 carbon atoms, a halogen-substituted aromatic hydrocarbon group having 6 to 24 carbon atoms, a nitrogen atom-containing hydrocarbon group having 2 to 24 carbon atoms whose bond terminal is a carbon atom An oxygen atom-containing hydrocarbon group having 2 to 24 carbon atoms whose bond terminal is a carbon atom, a phosphorus-containing hydrocarbon group having 2 to 24 carbon atoms whose bond terminal is a carbon atom, or a silicon-containing carbon atom having 1 to 24 carbon atoms A hydrogen group, a plurality of R ¹ may be the same or different, and may be bonded to each other to form a ring, n is an integer of 1 to 3, and X is Si, N R ² and R ³ are each a linear alkyl group having 1 to 20 carbon atoms, a branched alkyl group having 3 to 20 carbon atoms, a vinyl group, or a linear alkenyl having 3 to 20 carbon atoms. Group or branched alkenyl group, linear halogen-substituted alkyl group having 1 to 20 carbon atoms, branched halogen-substituted alkyl group having 3 to 20 carbon atoms, linear halogen-substituted alkenyl group having 2 to 20 carbon atoms, 3 to 3 carbon atoms 20 branched halogen-substituted alkenyl groups, carbon number -20 cycloalkyl group, C3-C20 cycloalkenyl group, C3-C20 halogen-substituted cycloalkyl group, C3-C20 halogen-substituted cycloalkenyl group, C6-C24 aromatic carbonization Hydrogen group, C6-C24 halogen-substituted aromatic hydrocarbon group, C2-C24 nitrogen atom-containing hydrocarbon group, C2-C24 oxygen atom-containing hydrocarbon group, C2-C24 phosphorus A hydrocarbon group or a silicon-containing hydrocarbon group having 1 to 24 carbon atoms, which may be the same or different, provided that the nitrogen atom-containing hydrocarbon group having 2 to 24 carbon atoms in R ^{1 to} R ³ is The bond terminal is a C═N group, the oxygen atom-containing hydrocarbon group having 2 to 24 carbon atoms is the one having a bond terminal being a carbonyl group, and the phosphorus-containing hydrocarbon group having 2 to 24 carbon atoms is Bonding end is C = Except those that are based on, respectively. The solid catalyst component for olefin polymerization containing an ester compound represented by

The present invention also provides (I) the solid catalyst component, (II) the following general formula (2);
R ⁴ _p AlQ _3-p (2)
(In the formula, R ⁴ represents an alkyl group having 1 to 6 carbon atoms, and when there are a plurality thereof, they may be the same or different, Q represents a hydrogen atom, an alkoxy group having 1 to 6 carbon atoms, or a halogen atom; Is a real number of 0 <p ≦ 3.) And (III) an olefin polymerization catalyst characterized by being formed from an external electron donating compound.

  The present invention also provides a method for producing an olefin polymer, characterized in that olefins are polymerized in the presence of the olefin polymerization catalyst.

  By using the solid catalyst component for olefin polymerization and the catalyst for olefin polymerization of the present invention, an olefin polymer having a high stereoregularity and an appropriate molecular weight distribution that is neither wide nor narrow can be obtained in a high yield. Can do.

It is a flowchart figure which shows the process of preparing the polymerization catalyst of this invention.

  The solid catalyst component for olefin polymerization of the present invention (hereinafter sometimes simply referred to as “component (I)”) is represented by the above general formula (1) as magnesium, titanium, halogen, and an electron-donating compound. A compound (hereinafter, also simply referred to as “component (A)”) is contained as an essential component.

  Examples of the halogen include fluorine, chlorine, bromine and iodine atoms. Among them, chlorine, bromine and iodine are preferable, and chlorine and iodine are particularly preferable.

In R ¹ in the general formula (1), examples of the halogen atom include fluorine, chlorine, bromine, and iodine atoms. Among them, chlorine, bromine, or iodine is preferable, and chlorine or bromine is particularly preferable. It is.

In R < ¹ > -R < ³ > in said general formula (1), as a C1-C20 linear alkyl group, a methyl group, an ethyl group, n-propyl group, n-butyl group, n-pentyl group is mentioned, for example. , N-hexyl group, n-pentyl group, n-octyl group, n-nonyl group, n-decyl group and the like. Preferably, it is a C1-C12 linear alkyl group. Moreover, as a C3-C20 branched alkyl group, the alkyl group which has secondary carbon or tertiary carbon, such as an isopropyl group, an isobutyl group, t-butyl group, an isopentyl group, a neopentyl group, is mentioned, for example. Preferably, it is a C3-C12 branched alkyl group.

  Moreover, as a C3-C20 linear alkenyl group, an allyl group, 3-butenyl group, 4-hexenyl group, 5-hexenyl group, 7-octenyl group, 10-dodecenyl etc. are mentioned, for example. Preferably, it is a C3-C12 linear alkenyl group. Examples of the branched alkenyl group having 3 to 20 carbon atoms include an isopropenyl group, an isobutenyl group, a t-butenyl group, an isopentenyl group, a neopentenyl group, and a 2-ethyl-3-hexenyl group. Preferably, it is a C3-C12 branched alkenyl group.

  Examples of the linear halogen-substituted alkyl group having 1 to 20 carbon atoms include a halogenated methyl group, a halogenated ethyl group, a halogenated n-propyl group, a halogenated n-butyl group, and a halogenated n-pentyl group. , Halogenated n-hexyl group, halogenated n-pentyl group, halogenated n-octyl group, halogenated nonyl group, and halogenated decyl group. Preferably, it is a C1-C12 linear halogen-substituted alkyl group.

  Examples of the branched halogen-substituted alkyl group having 3 to 20 carbon atoms include a halogenated isopropyl group, a halogenated isobutyl group, a halogenated 2-ethylhexyl group, and a halogenated neopentyl group. Preferably, it is a branched halogen-substituted alkyl group having 3 to 12 carbon atoms.

  Examples of the linear halogen-substituted alkenyl group having 2 to 20 carbon atoms include 2-halogenated vinyl group, 3-halogenated allyl group, 3-halogenated-2-butenyl group, 4-halogenated-3-butenyl. Group, perhalogenated-2-butenyl group, 6-halogenated-4-hexenyl group, 3-trihalogenated methyl-2-propenyl group and the like. A halogen-substituted alkenyl group having 2 to 12 carbon atoms is preferred.

  Examples of the branched halogen-substituted alkenyl group having 3 to 20 carbon atoms include 3-trihalogenated-2-butenyl group, 2-pentahalogenated ethyl-3-hexenyl group, and 6-halogenated-3-ethyl-4- Hexenyl group, 3-halogenated isobutenyl group and the like can be mentioned. A branched halogen-substituted alkenyl group having 3 to 12 carbon atoms is preferred.

In R ^{1 to} R ³ in the general formula (1), the cycloalkyl group having 3 to 20 carbon atoms includes a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, and a cyclononyl group. And cyclodecyl group. Preferably it is a C1-C12 cycloalkyl group. Moreover, as a C3-C20 cycloalkenyl group, a cyclopropenyl group, a cyclopentenyl group, a cyclohexenyl group, a cyclooctenyl group, a norbornene group, etc. are mentioned. Preferably it is a C3-C12 cycloalkenyl group.

Examples of the halogen-substituted cycloalkyl group having 3 to 20 carbon atoms include halogen-substituted cyclopropyl group, halogen-substituted cyclobutyl group, halogen-substituted cyclopentyl group, halogen-substituted trimethylcyclopentyl group, halogen-substituted cyclohexyl group, halogen-substituted methylcyclohexyl group, halogen A substituted cycloheptyl group, a halogen-substituted cyclooctyl group, a halogen-substituted cyclononyl group, a halogen-substituted cyclodecyl group, a halogen-substituted butylcyclopentyl and the like can be mentioned. Preferably it is a C1-C12 halogen substituted cycloalkyl group.
Examples of the halogen-substituted cycloalkenyl group having 3 to 20 carbon atoms include a halogen-substituted cyclopropenyl group, a halogen-substituted cyclobutenyl group, a halogen-substituted cyclopentenyl group, a halogen-substituted trimethylcyclopentenyl group, a halogen-substituted cyclohexenyl group, and a halogen-substituted methylcyclo Examples include hexenyl group, halogen-substituted cycloheptenyl group, halogen-substituted cyclooctenyl group, halogen-substituted cyclononenyl group, halogen-substituted cyclodecenyl group, and halogen-substituted butylcyclopentenyl. Preferably it is a C1-C12 halogen-substituted cycloalkenyl group.

In R ^{1 to} R ³ in the above general formula (1), examples of the aromatic hydrocarbon group having 6 to 24 carbon atoms include a phenyl group, a methylphenyl group, a dimethylphenyl group, an ethylphenyl group, a benzyl group, and 1-phenyl. Ethyl group, 2-phenylethyl group, 2-phenylpropyl group, 1-phenylbutyl group, 4-phenylbutyl group, 2-phenylheptyl group, tolyl group, xylyl group, naphthyl group, 1,8-dimethylnaphthyl group, etc. Is mentioned. Preferably it is a C6-C12 aromatic hydrocarbon group.

  Examples of the halogen-substituted aromatic hydrocarbon group having 6 to 24 carbon atoms include a halogenated phenyl group, a halogenated methylphenyl group, a trihalogenated methylphenyl group, a perhalogenated benzyl group, a perhalogenated phenyl group, 2- Examples include phenyl, 2-halogenated ethyl group, perhalogenated naphthyl group, 4-phenyl, 2,3-dihalogenated butyl group and the like. Preferably it is a 6-12 halogen-containing aromatic hydrocarbon group.

Moreover, in R < ¹ > -R < ³ > in General formula (1), as a C2-N24 nitrogen atom containing hydrocarbon group except the thing whose bond terminal is a C = N group, a bond terminal is a carbon atom. Groups such as methylaminomethyl group, dimethylaminomethyl group, ethylaminomethyl group, diethylaminomethyl group, propylaminomethyl group, dipropylaminomethyl group, methylaminoethyl group, dimethylaminoethyl group, ethylaminoethyl group , Diethylaminoethyl group, propylaminoethyl group, dipropylaminoethyl group, butylaminoethyl group, dibutylaminoethyl group, pentylaminoethyl group, dipentylaminoethyl group, hexylaminoethyl group, hexylmethylaminoethyl group, heptylmethylamino Ethyl group, diheptylaminomethyl group, octylme Alkylaminoalkyl groups such as tilaminomethyl group, dioctylaminoethyl group, nonylaminomethyl group, dinonylaminomethyl group, decylaminomethyl group, didecylamino group, cyclohexylaminomethyl group, dicyclohexylaminomethyl group; phenylaminomethyl group, Arylaminoalkyl group or alkylarylaminoalkyl group such as diphenylaminomethyl group, ditolylaminomethyl group, dinaphthylaminomethyl group, methylphenylaminoethyl group; polycyclic aminoalkyl group; anilino group, dimethylaminophenyl group, bis Amino group-containing aromatic hydrocarbon group such as dimethylaminophenyl group; methyliminomethyl group, ethyliminoethyl group, propyliminomethyl group, butyliminoethyl group, phenyliminomethyl group, etc. Noarukiru group, and the like. Preferably it is a C2-C12 nitrogen atom containing hydrocarbon group. In R ¹ , the bond terminal is an atom or group on the X side to which R ¹ is bonded, and in R ² and R ³ , the bond terminal is an atom on the oxygen atom side to which R ² and R ³ are bonded. Or say group. Hereinafter, the bond ends in R ^{1 to} R ³ have the same meaning.

Moreover, in R < ¹ > -R < ³ > in General formula (1), as a C2-C24 oxygen atom containing hydrocarbon group except the thing whose bond terminal is a carbonyl group, group whose bond terminal is a carbon atom. For example, methoxymethyl group, ethoxymethyl group, propoxymethyl group, butoxymethyl group, isopropoxymethyl group, isobutoxymethyl group, methoxyethyl group, ethoxyethyl group, propoxyethyl group, butoxyethyl group, isopropoxyethyl group, Ether group-containing hydrocarbon groups such as isobutoxyethyl group; aryloxyalkyl groups such as phenoxymethyl group, methylphenoxymethyl group, dimethylphenoxymethyl group, and naphthoxymethyl group; alkoxyaryl groups such as methoxyphenyl group and ethoxyphenyl group Group; acetoxymethyl group and the like. Preferably it is a C2-C12 oxygen atom containing hydrocarbon group.

  The phosphorus-containing hydrocarbon group having 2 to 24 carbon atoms, excluding those having a C = P group at the bond terminal, is a group having a carbon atom at the bond terminal, such as a dimethylphosphine methyl group or a dibutylphosphinomethyl group. A dialkylphosphinoalkyl group such as a dicyclohexylphosphinomethyl group, a dimethylphosphineethyl group, a dibutylphosphinoethyl group, a dicyclohexylphosphinoethyl group; a diarylphosphinoalkyl group such as a diphenylphosphinomethyl group or a ditolylphosphinomethyl group A phosphino group-substituted aryl group such as a dimethylphosphinophenyl group or a diethylphosphinophenyl group; A phosphorus-containing hydrocarbon group having 2 to 12 carbon atoms is preferred.

  Examples of the silicon-containing hydrocarbon group having 1 to 24 carbon atoms include a hydrocarbon-substituted silyl group, a hydrocarbon-substituted siloxy group, a siloxyalkyl group, a hydrocarbon-substituted silylalkyl group, and a hydrocarbon-substituted silylaryl group. Specifically, hydrocarbon-substituted silyl groups such as phenylsilyl, diphenylsilyl, trimethylsilyl, triethylsilyl, tripropylsilyl, tricyclohexylsilyl, triphenylsilyl, methyldiphenylsilyl, tolylsilylsilyl, trinaphthylsilyl; trimethylsilyl ether Hydrocarbon-substituted silyl ether groups such as trimethylsilylmethyl; silicon-substituted aryl groups such as trimethylsilylphenyl; and the like.

  In the above general formula (1), a linear halogen-substituted alkyl group, a branched halogen-substituted alkyl group, a linear halogen-substituted alkenyl group, a branched halogen-substituted alkenyl group, a halogen-substituted cycloalkyl group, a halogen-substituted cycloalkenyl group, Examples of the halogen species of the halogen-substituted aromatic hydrocarbon group include fluorine, chlorine, bromine and iodine, preferably fluorine, chlorine or bromine, particularly preferably fluorine and chlorine.

Further, in the general formula (1), when R ¹ is more than one is a ring formed by may form a ring bonded to each other, the plurality of R ¹ bonded to each other, for example, phosphate Examples thereof include a phosphocycloalkyl ring, a phosphocycloalkylene ring, a phosphofluorenyl ring, a silacycloalkyl ring, a silacycloalkylene ring, a silafluoranyl ring, a silafluorenyl ring, a silaphenanthrenyl ring, and a cylindanyl ring.

  In general formula (1), X is any one of N (nitrogen atom), P (phosphorus atom), and Si (silicon atom). In the case of N, n is 1, and in the case of P, n is n. 1 or 3; in the case of Si, n is 2.

In general formula (1), R ² and R ³ are preferably a linear alkyl group having 1 to 12 carbon atoms, a branched alkyl group having 3 to 12 carbon atoms, a vinyl group, and a linear chain having 3 to 12 carbon atoms. Alkenyl group or branched alkenyl group, linear halogen-substituted alkyl group having 2 to 12 carbon atoms, branched halogen-substituted alkyl group having 3 to 12 carbon atoms, cycloalkyl group having 3 to 12 carbon atoms, and 3 to 12 carbon atoms Any group selected from a cycloalkenyl group, a halogen-substituted cycloalkyl group having 3 to 12 carbon atoms, a halogen-substituted cycloalkenyl group having 3 to 12 carbon atoms, and an aromatic hydrocarbon group having 6 to 12 carbon atoms is there.

  Specific examples of the component (A) represented by the general formula (1) when X is N include dimethyl N-methylimino-1,3-dipropanoate and N-methylimino-1,3-dipropanoic acid. Diethyl, N-methylimino-1,3-dipropanoate dipropyl, N-methylimino-1,3-dipropanoate di-n-butyl, N-methylimino-1,3-dipropanoate diisobutyl, N-methylimino-1,3- Di-n-hexyl dipropanoate, di-2-ethylhexyl N-methylimino-1,3-dipropanoate, dioctyl N-methylimino-1,3-dipropanoate, di-2 N-methylimino-1,3-dipropanoate -Ethoxyethyl, N-methylimino-1,3-dipropanoic acid di-2-ethoxypropyl, N-methylimino-1,3-dipropanoic acid dipheny , N-methylimino-1,3-dipropanoic acid ditoluyl, N-methylimino-1,3-dipropanoic acid di-p-ethylphenyl, N-methylimino-1,3-dipropanoic acid di-p-fluorophenyl, N-methylimino -1,3-dipropanoic acid di-p-chlorophenyl, N-methylimino-1,3-dipropanoic acid di-p-trimethylsilylphenyl, N-methylimino-1,3-dipropanoic acid dinaphthyl, N-methylimino-1,3- Dibenzyl dipropanoate,

  N-ethylimino-1,3-dipropanoic acid dimethyl, N-ethylimino-1,3-dipropanoic acid diethyl, N-ethylimino-1,3-dipropanoic acid dipropyl, N-ethylimino-1,3-dipropanoic acid di-n- Butyl, N-ethylimino-1,3-dipropanoic acid diisobutyl, N-ethylimino-1,3-dipropanoic acid di-n-hexyl, N-methylimino-1,3-dipropanoic acid di-2-ethylhexyl, N-ethylimino Dioctyl-1,3-dipropanoate, di-2-ethoxyethyl N-ethylimino-1,3-dipropanoate, di-2-ethoxypropyl N-ethylimino-1,3-dipropanoate, N-ethylimino-1,3 -Diphenyl dipropanoate, N-ethylimino-1,3-toluoyl dipropanoate, N-ethylimino-1 3-dipropanoic acid di-p-ethylphenyl, N-ethylimino-1,3-dipropanoic acid di-p-fluorophenyl, N-ethylimino-1,3-dipropanoic acid di-p-chlorophenyl, N-ethylimino-1, Di-p-trimethylsilylphenyl 3-dipropanoate, dinaphthyl N-ethylimino-1,3-dipropanoate, dibenzyl N-ethylimino-1,3-dipropanoate,

  N-propylimino-1,3-dipropanoic acid dimethyl, N-propylimino-1,3-dipropanoic acid diethyl, N-propylimino-1,3-dipropanoic acid dipropyl, N-propylimino-1,3-dipropanoic acid Di-n-butyl, N-propylimino-1,3-dipropanoic acid diisobutyl, N-propylimino-1,3-dipropanoic acid di-n-hexyl, N-propylimino-1,3-dipropanoic acid di- 2-ethylhexyl, dioctyl N-propylimino-1,3-dipropanoate, di-2-ethoxyethyl N-propylimino-1,3-dipropanoate, di-2-N-propylimino-1,3-dipropanoate Ethoxypropyl, N-propylimino-1,3-dipropanoic acid diphenyl, N-propylimino-1,3-dipropanoic acid ditoluic N-propylimino-1,3-dipropanoic acid di-p-ethylphenyl, N-propylimino-1,3-dipropanoic acid di-p-fluorophenyl, N-propylimino-1,3-dipropanoic acid di- p-chlorophenyl, N-propylimino-1,3-dipropanoic acid di-p-trimethylsilylphenyl, N-propylimino-1,3-dipropanoic acid dinaphthyl, N-propylimino-1,3-dipropanoic acid dibenzyl,

  N-isopropylimino-1,3-dipropanoic acid dimethyl, N-isopropylimino-1,3-dipropanoic acid diethyl, N-isopropylimino-1,3-dipropanoic acid dipropyl, N-isopropylimino-1,3-dipropanoic acid Di-n-butyl, diisobutyl N-isopropylimino-1,3-dipropanoate, di-n-hexyl N-isopropylimino-1,3-dipropanoate, di-N-isopropylimino-1,3-dipropanoate 2-ethylhexyl, N-isopropylimino-1,3-dipropanoate dioctyl, N-isopropylimino-1,3-dipropanoate di-2-ethoxyethyl, N-isopropylimino-1,3-dipropanoate di-2- Ethoxypropyl, N-isopropylimino-1,3-dipropanoic acid diphenyl, N- Sopropylimino-1,3-dipropanoic acid ditoluyl, N-isopropylimino-1,3-dipropanoic acid di-p-ethylphenyl, N-isopropylimino-1,3-dipropanoic acid di-p-fluorophenyl, N- Isopropylimino-1,3-dipropanoic acid di-p-chlorophenyl, N-isopropylimino-1,3-dipropanoic acid di-p-trimethylsilylphenyl, N-isopropylimino-1,3-dipropanoic acid dinaphthyl, N-isopropylimino -Dibenzyl 1,3-dipropanoate,

  N-butylimino-1,3-dipropanoic acid dimethyl, N-butylimino-1,3-dipropanoic acid diethyl, N-butylimino-1,3-dipropanoic acid dipropyl, N-butylimino-1,3-dipropanoic acid di-n- Butyl, N-butylimino-1,3-dipropanoic acid diisobutyl, N-butylimino-1,3-dipropanoic acid di-n-hexyl, N-butylimino-1,3-dipropanoic acid di-2-ethylhexyl, N-butylimino -1,3-dipropanoic acid dioctyl, N-butylimino-1,3-dipropanoic acid di-2-ethoxyethyl, N-butylimino-1,3-dipropanoic acid di-2-ethoxypropyl, N-butylimino-1,3 Diphenyl dipropanoate, N-butylimino-1,3-toluoyl dipropanoate, N-butylimino-1 3-dipropanoic acid di-p-ethylphenyl, N-butylimino-1,3-dipropanoic acid di-p-fluorophenyl, N-butylimino-1,3-dipropanoic acid di-p-chlorophenyl, N-butylimino-1, Di-p-trimethylsilylphenyl 3-dipropanoate, dinaphthyl N-butylimino-1,3-dipropanoate, dibenzyl N-butylimino-1,3-dipropanoate,

  N-phenylimino-1,3-dipropanoic acid dimethyl, N-phenylimino-1,3-dipropanoic acid diethyl, N-phenylimino-1,3-dipropanoic acid dipropyl, N-phenylimino-1,3-dipropanoic acid Di-n-phenyl, N-phenylimino-1,3-dipropanoic acid diisobutyl, N-phenylimino-1,3-dipropanoic acid di-n-hexyl, N-phenylimino-1,3-dipropanoic acid di- 2-ethylhexyl, dioctyl N-phenylimino-1,3-dipropanoate, di-2-ethoxyethyl N-phenylimino-1,3-dipropanoate, di-2-N-phenylimino-1,3-dipropanoate Ethoxypropyl, N-phenylimino-1,3-dipropanoic acid diphenyl, N-phenylimino-1,3-dipropanoic acid ditoluene N-phenylimino-1,3-dipropanoic acid di-p-ethylphenyl, N-phenylimino-1,3-dipropanoic acid di-p-fluorophenyl, N-phenylimino-1,3-dipropanoic acid di- -P-chlorophenyl, di-p-trimethylsilylphenyl N-phenylimino-1,3-dipropanoate, dinaphthyl N-phenylimino-1,3-dipropanoate, dibenzyl N-phenylimino-1,3-dipropanoate,

  N-toluylimino-1,3-dipropanoic acid dimethyl, N-toluylimino-1,3-dipropanoic acid diethyl, N-toluylimino-1,3-dipropanoic acid dipropyl, N-toluylimino-1,3-dipropanoic acid di-n- Toluyl, N-toluylimino-1,3-dipropanoic acid diisobutyl, N-toluylimino-1,3-dipropanoic acid di-n-hexyl, N-toluylimino-1,3-dipropanoic acid di-2-ethylhexyl, N-toluylimino Dioctyl-1,3-dipropanoate, di-2-ethoxyethyl N-toluylimino-1,3-dipropanoate, di-2-ethoxypropyl N-toluylimino-1,3-dipropanoate, N-toluylimino-1,3 -Diphenyl dipropanoate, N-toluylimino-1,3-dipropanoate ditoluate N-tolulymino-1,3-dipropanoic acid di-p-ethylphenyl, N-tolulymino-1,3-dipropanoic acid di-p-fluorophenyl, N-tolulymino-1,3-dipropanoic acid di-p- Chlorophenyl, N-toluylimino-1,3-dipropanoic acid di-p-trimethylsilylphenyl, N-toluylimino-1,3-dipropanoic acid dinaphthyl, N-toluylimino-1,3-dipropanoic acid dibenzyl,

  N- (p-chlorophenyl) imino-1,3-dipropanoic acid dimethyl, N- (p-chlorophenyl) imino-1,3-dipropanoic acid diethyl, N- (p-chlorophenyl) imino-1,3-dipropanoic acid dipropyl N- (p-chlorophenyl) imino-1,3-dipropanoic acid di-n- (p-chlorophenyl) -n- (p-chlorophenyl) imino-1,3-dipropanoic acid diisobutyl, N- (p-chlorophenyl) Imino-1,3-dipropanoic acid di-n-hexyl, N- (p-chlorophenyl) imino-1,3-dipropanoic acid di-2-ethylhexyl, N- (p-chlorophenyl) imino-1,3-dipropane Dioctyl acid, di-2-ethoxyethyl N- (p-chlorophenyl) imino-1,3-dipropanoate, N- (p-chlorophenyl) imino-1,3-dipropanoic acid Di-2-ethoxypropyl, N- (p-chlorophenyl) imino-1,3-dipropanoic acid diphenyl, N- (p-chlorophenyl) imino-1,3-dipropanoic acid ditoluyl, N- (p-chlorophenyl) imino- 1,3-dipropanoic acid di-p-ethylphenyl, N- (p-chlorophenyl) imino-1,3-dipropanoic acid di-p-fluorophenyl, N- (p-chlorophenyl) imino-1,3-dipropanoic acid Di-p-chlorophenyl, N- (p-chlorophenyl) imino-1,3-dipropanoic acid di-p-trimethylsilylphenyl, N- (p-chlorophenyl) imino-1,3-dipropanoic acid dinaphthyl, N- (p- Chlorophenyl) imino-1,3-dipropanoate,

  N- (p-methoxyphenyl) imino-1,3-dipropanoic acid dimethyl, N- (p-methoxyphenyl) imino-1,3-dipropanoic acid diethyl, N- (p-methoxyphenyl) imino-1,3- Dipropyl dipropanoate, N- (p-methoxyphenyl) imino-1,3-dipropanoic acid di-n- (p-methoxyphenyl) -n- (p-methoxyphenyl) imino-1,3-dipropanoic acid diisobutyl, N -(P-methoxyphenyl) imino-1,3-dipropanoic acid di-n-hexyl, N- (p-methoxyphenyl) imino-1,3-dipropanoic acid di-2-ethylhexyl, N- (p-methoxy) Phenyl) imino-1,3-dipropanoic acid dioctyl, N- (p-methoxyphenyl) imino-1,3-dipropanoic acid di-2-ethoxyethyl, N- (p-methoxyphenyl) imino -1,3-dipropanoic acid di-2-ethoxypropyl, N- (p-methoxyphenyl) imino-1,3-dipropanoic acid diphenyl, N- (p-methoxyphenyl) imino-1,3-dipropanoic acid ditoluyl, N- (p-methoxyphenyl) imino-1,3-dipropanoic acid di-p-ethylphenyl, N- (p-methoxyphenyl) imino-1,3-dipropanoic acid di-p-fluorophenyl, N- (p -Methoxyphenyl) imino-1,3-dipropanoic acid di-p-chlorophenyl, N- (p-methoxyphenyl) imino-1,3-dipropanoic acid di-p-trimethylsilylphenyl, N- (p-methoxyphenyl) imino -1,3-dipropanoic acid dinaphthyl, N- (p-methoxyphenyl) imino-1,3-dipropanoic acid dibenzyl,

  N- (p-diethylaminophenyl) imino-1,3-dipropanoic acid dimethyl, N- (p-diethylaminophenyl) imino-1,3-dipropanoic acid diethyl, N- (p-diethylaminophenyl) imino-1,3- Dipropyl dipropanoate, di-n-butyl N- (p-diethylaminophenyl) imino-1,3-dipropanoate, diisobutyl N- (p-diethylaminophenyl) imino-1,3-dipropanoate, N- (p-diethylamino) Phenyl) imino-1,3-dipropanoic acid di-n-hexyl, N- (p-diethylaminophenyl) imino-1,3-dipropanoic acid di-2-ethylhexyl, N- (p-diethylaminophenyl) imino-1 , 3-Dipropanoic acid dioctyl, N- (p-diethylaminophenyl) imino-1,3-dipropanoic acid di-2-ethoxy ester Til, N- (p-diethylaminophenyl) imino-1,3-dipropanoic acid di-2-ethoxypropyl, N- (p-diethylaminophenyl) imino-1,3-dipropanoic acid diphenyl, N- (p-diethylaminophenyl) ) Imino-1,3-dipropanoic acid ditoluyl, N- (p-diethylaminophenyl) imino-1,3-dipropanoic acid di-p-ethylphenyl, N- (p-diethylaminophenyl) imino-1,3-dipropanoic acid Di-p-fluorophenyl, N- (p-diethylaminophenyl) imino-1,3-dipropanoic acid di-p-chlorophenyl, N- (p-diethylaminophenyl) imino-1,3-dipropanoic acid di-p-diethylamino Phenyl, N- (p-diethylaminophenyl) imino-1,3-dipropanoic acid dinaphthyl, N- (p-diethyl Minofeniru) imino-1,3-Jipuropan acid dibenzyl,

  N- (p-trimethylsilylphenyl) imino-1,3-dipropanoic acid dimethyl, N- (p-trimethylsilylphenyl) imino-1,3-dipropanoic acid diethyl, N- (p-trimethylsilylphenyl) imino-1,3- Dipropyl dipropanoate, N- (p-trimethylsilylphenyl) imino-1,3-dipropanoate di-n- (P-trimethylsilylphenyl) -n- (p-trimethylsilylphenyl) imino-1,3-dipropanoate diisobutyl, N -(P-trimethylsilylphenyl) imino-1,3-dipropanoic acid di-n-hexyl, N- (p-trimethylsilylphenyl) imino-1,3-dipropanoic acid di-2-ethylhexyl, N- (p-trimethylsilyl) Phenyl) imino-1,3-dipropanoate, N- (p-trimethylsilylphenyl) i 1,2-dipropanoic acid di-2-ethoxyethyl, N- (p-trimethylsilylphenyl) imino-1,3-dipropanoic acid di-2-ethoxypropyl, N- (p-trimethylsilylphenyl) imino-1, 3-dipropanoic acid diphenyl, N- (p-trimethylsilylphenyl) imino-1,3-dipropanoic acid ditoluyl, N- (p-trimethylsilylphenyl) imino-1,3-dipropanoic acid di-p-ethylphenyl, N- ( p-trimethylsilylphenyl) imino-1,3-dipropanoic acid di-p-fluorophenyl, N- (p-trimethylsilylphenyl) imino-1,3-dipropanoic acid di-p-chlorophenyl, N- (p-trimethylsilylphenyl) Imino-1,3-dipropanoic acid di-p-trimethylsilylphenyl, N- (p-trimethylsilylpheny Di) imino-1,3-dipropanoic acid dinaphthyl, N- (p-trimethylsilylphenyl) imino-1,3-dipropanoic acid dibenzyl,

  N- (bis (dimethylphosphino) ethyl) imino-1,3-dipropanoic acid dimethyl, N- (bis (dimethylphosphino) ethyl) imino-1,3-dipropanoic acid diethyl, N- (bis (dimethylphosphino) ) Ethyl) imino-1,3-dipropanoic acid dipropyl, N- (bis (dimethylphosphino) ethyl) imino-1,3-dipropanoic acid di-n- (P-trimethylsilylphenyl) -n- (bis (dimethylphosphine) Fino) ethyl) imino-1,3-dipropanoic acid diisobutyl, N- (bis (dimethylphosphino) ethyl) imino-1,3-dipropanoic acid di-n-hexyl, N- (bis (dimethylphosphino) ethyl ) Imino-1,3-dipropanoic acid di-2-ethylhexyl, N- (bis (dimethylphosphino) ethyl) imino-1,3-dipropanoic acid Octyl, N- (bis (dimethylphosphino) ethyl) imino-1,3-dipropanoic acid di-2-ethoxyethyl, N- (bis (dimethylphosphino) ethyl) imino-1,3-dipropanoic acid di-2 -Ethoxypropyl, N- (bis (dimethylphosphino) ethyl) imino-1,3-dipropanoic acid diphenyl, N- (bis (dimethylphosphino) ethyl) imino-1,3-dipropanoic acid ditoluyl, N- (bis (Dimethylphosphino) ethyl) imino-1,3-dipropanoic acid di-p-ethylphenyl, N- (bis (dimethylphosphino) ethyl) imino-1,3-dipropanoic acid di-p-fluorophenyl, N- (Bis (dimethylphosphino) ethyl) imino-1,3-dipropanoic acid di-p-chlorophenyl, N- (bis (dimethylphosphino) e L) Imino-1,3-dipropanoic acid di-bis (dimethylphosphino) ethyl, N- (bis (dimethylphosphino) ethyl) imino-1,3-dipropanoic acid dinaphthyl, N- (bis (dimethylphosphino) Ethyl) imino-1,3-dipropanoic acid dibenzyl, and the like.

  When X is P, n can take 1 to 3. Specific examples in the case of n = 1 are dimethyl-2- (methylphosphanylidene) -1,3-dipropanoate, diethyl 2- (methylphosphanylidene) -1,3-dipropanoate, 2- (methylphosphanani Ridene) -1,3-dipropanoic acid dipropyl, 2- (methylphosphanylidene) -1,3-dipropanoic acid di-n-butyl, 2- (methylphosphanylidene) -1,3-dipropanoic acid diisobutyl, 2- (Methylphosphanylidene) -1,3-dipropanoic acid dihexyl, 2- (methylphosphanylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2- (methylphosphanylidene) -1,3-dipropane Diphenyl acid, ditoluyl 2- (methylphosphanylidene) -1,3-dipropanoate, dibenzyl 2- (methylphosphanylidene) -1,3-dipropanoate,

  2- (Ethylphosphanylidene) -1,3-dipropanoic acid dimethyl, 2- (ethylphosphanylidene) -1,3-dipropanoic acid diethyl, 2- (ethylphosphanylidene) -1,3-dipropanoic acid dipropyl 2- (ethyl phosphanylidene) -1,3-dipropanoate di-n-butyl, 2- (ethyl phosphanylidene) -1,3-dipropanoate diisobutyl, 2- (ethyl phosphanylidene) -1,3 -Dihexyl dipropanoate, 2- (ethyl phosphanylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2- (ethyl phosphanylidene) -1,3-dipropanoic acid diphenyl, 2- (ethyl phosphanylidene) ) -1,3-dipropanoic acid ditoluyl, 2- (ethylphosphanylidene) -1,3-dipropanoic acid dibenzyl,

  2- (Isobutylphosphanylidene) -1,3-dipropanoic acid dimethyl, 2- (isobutylphosphanylidene) -1,3-dipropanoic acid diethyl, 2- (isobutylphosphanylidene) -1,3-dipropanoic acid dipropyl 2- (isobutylphosphanylidene) -1,3-dipropanoic acid di-n-butyl, 2- (isobutylphosphanylidene) -1,3-dipropanoic acid diisobutyl, 2- (isobutylphosphanylidene) -1,3 -Dihexyl dipropanoate, 2- (isobutyl phosphanylidene) -1,3-dipropanoate di-2-ethylhexyl, 2- (isobutyl phosphanylidene) -1,3-dipropanoate diphenyl, 2- (isobutyl phosphanylidene) ) -1,3-dipropanoic acid ditoluyl, 2- (isobutylphosphanylidene) -1,3-dipropanoic acid dibenzyl ,

  2- (t-butylphosphanylidene) -1,3-dipropanoic acid dimethyl, 2- (t-butylphosphanylidene) -1,3-dipropanoic acid diethyl, 2- (t-butylphosphanylidene) -1 , 3-dipropanoic acid dipropyl, 2- (t-butylphosphanylidene) -1,3-dipropanoic acid di-n-butyl, 2- (t-butylphosphanylidene) -1,3-dipropanoic acid diisobutyl, 2- (t-Butylphosphanylidene) -1,3-dipropanoic acid dihexyl, 2- (t-butylphosphanylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2- (t-butylphosphanylidene) -1,3-dipropanoic acid diphenyl, 2- (t-butylphosphanylidene) -1,3-dipropanoic acid ditoluyl, 2- (t-butylphosphanylidene) -1,3-dipropanoic acid dibenzyl ,

  2- (Phenylphosphanylidene) -1,3-dipropanoic acid dimethyl, 2- (phenylphosphanylidene) -1,3-dipropanoic acid diethyl, 2- (phenylphosphanylidene) -1,3-dipropanoic acid dipropyl 2- (phenyl phosphanylidene) -1,3-dipropanoic acid di-n-butyl, 2- (phenyl phosphanylidene) -1,3-dipropanoic acid diisobutyl, 2- (phenyl phosphanylidene) -1,3 -Dihexyl dipropanoate, 2- (phenylphosphanylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2- (phenylphosphonylidene) -1,3-dipropanoic acid diphenyl, 2- (phenylphosphonylidene) ) -1,3-dipropanoic acid ditoluyl, 2- (phenylphosphanylidene) -1,3-dipropanoic acid dibenzyl Etc. The.

  Specific examples when n = 3 are dimethyl-2- (trimethylphosphoranylidene) -1,3-dipropanoate, diethyl 2- (trimethylphosphoranylidene) -1,3-dipropanoate, 2- (trimethyl Phosphoranilidene) -1,3-dipropanoic acid dipropyl, 2- (trimethylphosphoranylidene) -1,3-dipropanoic acid di-n-butyl, 2- (trimethylphosphoranylidene) -1,3-dipropane Diisobutyl acid, 2- (trimethylphosphoranylidene) -1,3-dipropanoic acid dihexyl, 2- (trimethylphosphoranylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2- (trimethylphosphorani Ridene) -1,3-dipropanoic acid diphenyl, 2- (trimethylphosphoranylidene) -1,3-dipropanoic acid ditoluic acid , 2- (trimethyl phosphonium Rani isopropylidene) -1,3 Jipuropan acid dibenzyl,

  2- (triethylphosphoranylidene) -1,3-dipropanoic acid dimethyl, 2- (triethylphosphoranylidene) -1,3-dipropanoic acid diethyl, 2- (triethylphosphoranylidene) -1,3- Dipropyl dipropanoate, 2- (triethylphosphoranylidene) -1,3-dipropanoate di-n-butyl, 2- (triethylphosphoranylidene) -1,3-dipropanoate diisobutyl, 2- (triethylphosphorani) Ridene) -1,3-dipropanoic acid dihexyl, 2- (triethylphosphoranylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2- (triethylphosphoranylidene) -1,3-dipropanoic acid diphenyl 2- (triethylphosphoranylidene) -1,3-dipropanoic acid ditoluyl, 2- (triethylphosphine) Oraniriden) -1,3-Jipuropan acid dibenzyl,

  2- (tri-n-butylphosphoranylidene) -1,3-dipropanoate dimethyl, 2- (tri-n-butylphosphoranylidene) -1,3-dipropanoate diethyl, 2- (tri-n-butylphosphine) Foranilidene) -1,3-dipropanoic acid dipropyl, 2- (tri-n-butylphosphoranylidene) -1,3-dipropanoic acid di-n-butyl, 2- (tri-n-butylphosphoranylidene)- 1,3-dipropanoic acid diisobutyl, 2- (tri-n-butylphosphoranylidene) -1,3-dipropanoic acid dihexyl, 2- (tri-n-butylphosphoranylidene) -1,3-dipropanoic acid di- 2-ethylhexyl, 2- (tri-n-butylphosphoranylidene) -1,3-dipropanoic acid diphenyl, 2- (tri-n-butylphosphoranylidene) -1,3-dipropanoic acid ditoluyl, 2- (tri n -Butylphosphoranylidene) -1,3-dipropanoic acid dibenzyl,

  2- (Triisobutylphosphoranylidene) -1,3-dipropanoic acid dimethyl, 2- (triisobutylphosphoranylidene) -1,3-dipropanoic acid diethyl, 2- (triisobutylphosphoranylidene) -1 , 3-dipropanoic acid dipropyl, 2- (triisobutylphosphoranylidene) -1,3-dipropanoic acid di-n-butyl, 2- (triisobutylphosphoranylidene) -1,3-dipropanoic acid diisobutyl, 2- (Triisobutylphosphoranylidene) -1,3-dipropanoic acid dihexyl, 2- (triisobutylphosphoranylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2- (triisobutylphosphoranylidene) -1,3-dipropanoic acid diphenyl, 2- (triisobutylphosphoranylidene) -1,3-dipropa Acid Jitoruiru, 2- (tri-isobutyl phosphonium Rani isopropylidene) -1,3 Jipuropan acid dibenzyl,

  2- (tris (t-butyl) phosphoranylidene) -1,3-dipropanoic acid dimethyl, 2- (tris (t-butyl) phosphoranylidene) -1,3-dipropanoic acid diethyl, 2- (tris (t-butyl) phosphoranylidene) -1,3-dipropanoic acid dipropyl, 2- (tris (t-butyl) phosphoranylidene) -1,3-dipropanoic acid di n-butyl, 2- (tris ( t-butyl) phosphoranylidene) -1,3-dipropanoic acid diisobutyl, 2- (tris (t-butyl) phosphoranylidene) -1,3-dipropanoic acid dihexyl, 2- (tris (t-butyl) Phosphoranylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2- (tris (t-butyl) phosphoranylidene) -1,3-dipropanoic acid diphenyl, 2- (tris (t-butyl) Phospho Vinylidene) -1,3 Jipuropan acid Jitoruiru, 2- (tris (t-butyl) phosphonium Rani isopropylidene) -1,3 Jipuropan acid dibenzyl,

  2- (triphenylphosphoranylidene) -1,3-dipropanoic acid dimethyl, 2- (triphenylphosphoranylidene) -1,3-dipropanoic acid diethyl, 2- (triphenylphosphoranylidene) -1 , 3-dipropanoic acid dipropyl, 2- (triphenylphosphoranylidene) -1,3-dipropanoic acid di-n-butyl, 2- (triphenylphosphoranylidene) -1,3-dipropanoic acid diisobutyl, 2- (Triphenylphosphoranylidene) -1,3-dipropanoic acid dihexyl, 2- (triphenylphosphoranylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2- (triphenylphosphoranylidene) -1,3-dipropanoic acid diphenyl, 2- (triphenylphosphoranylidene) -1,3-dipropanoic acid ditoluyl, 2 (Triphenyl phosphonium Rani isopropylidene) -1,3 Jipuropan acid dibenzyl,

  2- (trimethoxyphosphoranylidene) -1,3-dipropanoic acid dimethyl, 2- (trimethoxyphosphoranylidene) -1,3-dipropanoic acid diethyl, 2- (trimethoxyphosphoranylidene) -1 , 3-dipropanoic acid dipropyl, 2- (trimethoxyphosphoranylidene) -1,3-dipropanoic acid di-n-butyl, 2- (trimethoxyphosphoranylidene) -1,3-dipropanoic acid diisobutyl, 2- (Trimethoxyphosphoranylidene) -1,3-dipropanoic acid dihexyl, 2- (trimethoxyphosphoranylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2- (trimethoxyphosphoranylidene) -1,3-dipropanoic acid diphenyl, 2- (trimethoxyphosphoranylidene) -1,3-dipropanoic acid ditoluyl, 2 (Trimethoxy phosphonium Rani isopropylidene) -1,3 Jipuropan acid dibenzyl,

  2- (Triethoxyphosphoranylidene) -1,3-dipropanoic acid dimethyl, 2- (triethoxyphosphoranylidene) -1,3-dipropanoic acid diethyl, 2- (triethoxyphosphoranylidene) -1 , 3-dipropanoic acid dipropyl, 2- (triethoxyphosphoranylidene) -1,3-dipropanoic acid di-n-butyl, 2- (triethoxyphosphoranylidene) -1,3-dipropanoic acid diisobutyl, 2- (Triethoxyphosphoranylidene) -1,3-dipropanoic acid dihexyl, 2- (triethoxyphosphoranylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2- (triethoxyphosphoranylidene) -1,3-dipropanoic acid diphenyl, 2- (triethoxyphosphoranylidene) -1,3-dipropanoic acid ditoluyl, 2 (Triethoxy phosphonium Rani isopropylidene) -1,3 Jipuropan acid dibenzyl,

  2- (Triphenoxyphosphoranylidene) -1,3-dipropanoic acid dimethyl, 2- (triphenoxyphosphoranylidene) -1,3-dipropanoic acid diethyl, 2- (triphenoxyphosphoranylidene) -1 , 3-dipropanoic acid dipropyl, 2- (triphenoxyphosphoranylidene) -1,3-dipropanoic acid di-n-butyl, 2- (triphenoxyphosphoranylidene) -1,3-dipropanoic acid diisobutyl, 2- (Triphenoxyphosphoranylidene) -1,3-dipropanoic acid dihexyl, 2- (triphenoxyphosphoranylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2- (triphenoxyphosphoranylidene) -1,3-dipropanoic acid diphenyl, 2- (triphenoxyphosphoranylidene) -1,3-dipropa Acid Jitoruiru, 2- (tri-phenoxy phosphonium Rani isopropylidene) -1,3 Jipuropan dibenzyl, and the like.

  When X is Si, n is 2, and specific examples thereof include dimethyl 2- (dimethylsilylidene) -1,3-dipropanoate, dimethyl 2- (dimethylsilylidene) -1,3-dipropanoate. 2- (dimethylsilylidene) -1,3-dipropanoic acid diethyl, 2- (dimethylsilylidene) -1,3-dipropanoic acid dipropyl, 2- (dimethylsilylidene) -1,3-dipropanoic acid di-n- Butyl, 2- (dimethylsilylidene) -1,3-dipropanoic acid diisobutyl, 2- (dimethylsilylidene) -1,3-dipropanoic acid dihexyl, 2- (dimethylsilylidene) -1,3-dipropanoic acid di- 2-ethylhexyl, 2- (dimethylsilylidene) -1,3-dipropanoic acid diphenyl, 2- (dimethylsilylidene) -1,3-dipropanoic acid ditoluyl, 2- (dimethylsilylide) ) -1,3-Jipuropan acid dibenzyl,

  2- (diethylsilylidene) -1,3-dipropanoic acid dimethyl, 2- (diethylsilylidene) -1,3-dipropanoic acid diethyl, 2- (diethylsilylidene) -1,3-dipropanoic acid dipropyl, 2- (Diethylsilylidene) -1,3-dipropanoic acid di n-butyl, 2- (diethylsilylidene) -1,3-dipropanoic acid diisobutyl, 2- (diethylsilylidene) -1,3-dipropanoic acid dihexyl, -(Diethylsilylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2- (diethylsilylidene) -1,3-dipropanoic acid diphenyl, 2- (diethylsilylidene) -1,3-dipropanoic acid ditoluyl 2- (diethylsilylidene) -1,3-dipropanoic acid dibenzyl,

  2- (dipropylsilylidene) -1,3-dipropanoic acid dimethyl, 2- (dipropylsilylidene) -1,3-dipropanoic acid diethyl, 2- (dipropylsilylidene) -1,3-dipropanoic acid dipropyl 2- (dipropylsilylidene) -1,3-dipropanoic acid di-n-butyl, 2- (dipropylsilylidene) -1,3-dipropanoic acid diisobutyl, 2- (dipropylsilylidene) -1,3 -Dihexyl dipropanoate, 2- (dipropylsilylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2- (dipropylsilylidene) -1,3-dipropanoic acid diphenyl, 2- (dipropylsilylidene) ) -1,3-dipropanoic acid ditoluyl, 2- (dipropylsilylidene) -1,3-dipropanoic acid dibenzyl,

  2- (Di-n-butylsilylidene) -1,3-dipropanoic acid dimethyl, 2- (di-n-butylsilylidene) -1,3-dipropanoic acid diethyl, 2- (di-n-butylsilylidene) -1 , 3-dipropanoic acid dipropyl, 2- (di-n-butylsilylidene) -1,3-dipropanoic acid di-n-butyl, 2- (di-n-butylsilylidene) -1,3-dipropanoic acid diisobutyl, 2- (Di-n-butylsilylidene) -1,3-dipropanoic acid dihexyl, 2- (di-n-butylsilylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2- (di-n-butylsilylidene) -1,3-dipropanoic acid diphenyl, 2- (di-n-butylsilylidene) -1,3-dipropanoic acid ditoluyl, 2- (di-n-butylsilylidene) -1,3-dipropanoic acid dibenzyl,

  2- (diisobutylsilylidene) -1,3-dipropanoic acid dimethyl, 2- (diisobutylsilylidene) -1,3-dipropanoic acid diethyl, 2- (diisobutylsilylidene) -1,3-dipropanoic acid dipropyl, 2- (Diisobutylsilylidene) -1,3-dipropanoic acid di n-butyl, 2- (diisobutylsilylidene) -1,3-dipropanoic acid diisobutyl, 2- (diisobutylsilylidene) -1,3-dipropanoic acid dihexyl, 2 -(Diisobutylsilylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2- (diisobutylsilylidene) -1,3-dipropanoic acid diphenyl, 2- (diisobutylsilylidene) -1,3-dipropanoic acid ditoluyl 2- (diisobutylsilylidene) -1,3-dipropanoic acid dibenzyl,

  2- (di-t-butylsilylidene) -1,3-dipropanoic acid dimethyl, 2- (di-t-butylsilylidene) -1,3-dipropanoic acid diethyl, 2- (di-t-butylsilylidene) -1 , 3-dipropanoic acid dipropyl, 2- (di-t-butylsilylidene) -1,3-dipropanoic acid di-n-butyl, 2- (di-t-butylsilylidene) -1,3-dipropanoic acid diisobutyl, 2- (Di-t-butylsilylidene) -1,3-dipropanoic acid dihexyl, 2- (di-t-butylsilylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2- (di-t-butylsilylidene) -1,3-dipropanoic acid diphenyl, 2- (di-t-butylsilylidene) -1,3-dipropanoic acid ditoluyl, 2- (di-t-butylsilylidene) -1,3-dipropanoic acid dibenzyl,

  2- (diphenylsilylidene) -1,3-dipropanoic acid dimethyl, 2- (diphenylsilylidene) -1,3-dipropanoic acid diethyl, 2- (diphenylsilylidene) -1,3-dipropanoic acid dipropyl, 2- (Diphenylsilylidene) -1,3-dipropanoic acid di n-butyl, 2- (diphenylsilylidene) -1,3-dipropanoic acid diisobutyl, 2- (diphenylsilylidene) -1,3-dipropanoic acid dihexyl, -(Diphenylsilylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2- (diphenylsilylidene) -1,3-dipropanoic acid diphenyl, 2- (diphenylsilylidene) -1,3-dipropanoic acid ditoluyl 2- (diphenylsilylidene) -1,3-dipropanoic acid dibenzyl,

  2- (dicyclopentylsilylidene) -1,3-dipropanoic acid dimethyl, 2- (dicyclopentylsilylidene) -1,3-dipropanoic acid diethyl, 2- (dicyclopentylsilylidene) -1,3-dipropanoic acid dipropyl 2- (dicyclopentylsilylidene) -1,3-dipropanoic acid di-n-butyl, 2- (dicyclopentylsilylidene) -1,3-dipropanoic acid diisobutyl, 2- (dicyclopentylsilylidene) -1,3 -Dihexyl dipropanoate, 2- (dicyclopentylsilylidene) -1,3-dipropanoate di-2-ethylhexyl, 2- (dicyclopentylsilylidene) -1,3-dipropanoate diphenyl, 2- (dicyclopentylsilylidene) ) -1,3-dipropanoic acid ditoluyl, 2- (dicyclopentylsilylidene) -1,3-dipropanoic acid di Njiru,

  2-((Toluyl) ethylsilylidene) -1,3-dipropanoic acid dimethyl, 2-((toluyl) ethylsilylidene) -1,3-dipropanoic acid diethyl, 2-((toluyl) ethylsilylidene) -1 , 3-dipropanoic acid dipropyl, 2-((toluyl) ethylsilylidene) -1,3-dipropanoic acid di-n-butyl, 2-((toluyl) ethylsilylidene) -1,3-dipropanoic acid diisobutyl, 2- ((Toluyl) ethylsilylidene) -1,3-dipropanoic acid dihexyl, 2-((toluyl) ethylsilylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2-((toluyl) ethylsilylidene) -Diphenyl 1,3-dipropanoate, 2-((toluyl) ethylsilylidene) -1,3-dipropanoic acid ditoluyl, 2-((toluyl) ethylsilylidene)- , 3-Jipuropan acid dibenzyl,

  2- (cyclohexylmethylsilylidene) -1,3-dipropanoic acid dimethyl, 2- (cyclohexylmethylsilylidene) -1,3-dipropanoic acid diethyl, 2- (cyclohexylmethylsilylidene) -1,3-dipropanoic acid dipropyl 2- (cyclohexylmethylsilylidene) -1,3-dipropanoic acid di-n-butyl, 2- (cyclohexylmethylsilylidene) -1,3-dipropanoic acid diisobutyl, 2- (cyclohexylmethylsilylidene) -1,3 -Dihexyl dipropanoate, 2- (cyclohexylmethylsilylidene) -1,3-dipropanoate di-2-ethylhexyl, 2- (cyclohexylmethylsilylidene) -1,3-dipropanoate diphenyl, 2- (cyclohexylmethylsilylidene) ) -1,3-dipropanoic acid ditoluyl, 2- (cyclohexylmedium) Rushiririden) -1,3-Jipuropan acid dibenzyl,

  2- (t-butylmethylsilylidene) -1,3-dipropanoic acid dimethyl, 2- (t-butylmethylsilylidene) -1,3-dipropanoic acid diethyl, 2- (t-butylmethylsilylidene) -1 , 3-dipropanoic acid dipropyl, 2- (t-butylmethylsilylidene) -1,3-dipropanoic acid di-n-butyl, 2- (t-butylmethylsilylidene) -1,3-dipropanoic acid diisobutyl, 2- (t-Butylmethylsilylidene) -1,3-dipropanoic acid dihexyl, 2- (t-butylmethylsilylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2- (t-butylmethylsilylidene) -1,3-dipropanoic acid diphenyl, 2- (t-butylmethylsilylidene) -1,3-dipropanoic acid ditoluyl, 2- (t-butylmethylsilylidene) -1,3-dipropanoic acid diphenyl Njiru,

  2-((diethylamino) methylsilylidene) -1,3-dipropanoic acid dimethyl, 2-((diethylamino) methylsilylidene) -1,3-dipropanoic acid diethyl, 2-((diethylamino) methylsilylidene) -1 , 3-dipropanoic acid dipropyl, 2-((diethylamino) methylsilylidene) -1,3-dipropanoic acid di-n-butyl, 2-((diethylamino) methylsilylidene) -1,3-dipropanoic acid diisobutyl, 2- ((Diethylamino) methylsilylidene) -1,3-dipropanoic acid dihexyl, 2-((diethylamino) methylsilylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2-((diethylamino) methylsilylidene) -1,3-dipropanoic acid diphenyl, 2-((diethylamino) methylsilylidene) -1,3-dipropa Acid Jitoruiru, 2 - ((diethylamino) methyl silicate isopropylidene) -1,3 Jipuropan acid dibenzyl,

  2- (diphenoxysilylidene) -1,3-dipropanoic acid dimethyl, 2- (diphenoxysilylidene) -1,3-dipropanoic acid diethyl, 2- (diphenoxysilylidene) -1,3-dipropanoic acid dipropyl 2- (diphenoxysilylidene) -1,3-dipropanoic acid di-n-butyl, 2- (diphenoxysilylidene) -1,3-dipropanoic acid diisobutyl, 2- (diphenoxysilylidene) -1,3 -Dihexyl dipropanoate, 2- (diphenoxysilylidene) -1,3-dipropanoic acid di-2-ethylhexyl, 2- (diphenoxysilylidene) -1,3-dipropanoic acid diphenyl, 2- (diphenoxysilylidene) ) -1,3-dipropanoic acid ditoluyl, 2- (diphenoxysilylidene) -1,3-dipropanoic acid dibenzyl,

  2- (bis (dimethylphosphino) ethylsilylidene) -1,3-dipropanoic acid dimethyl, 2- (bis (dimethylphosphino) ethylsilylidene) -1,3-dipropanoic acid diethyl, 2- (bis (dimethyl Phosphino) ethylsilylidene) -1,3-dipropanoic acid dipropyl, 2- (bis (dimethylphosphino) ethylsilylidene) -1,3-dipropanoic acid di-n-butyl, 2- (bis (dimethylphosphino) Ethylsilylidene) -1,3-dipropanoic acid diisobutyl, 2- (bis (dimethylphosphino) ethylsilylidene) -1,3-dipropanoic acid dihexyl, 2- (bis (dimethylphosphino) ethylsilylidene) -1 , 3-Dipropanoic acid di-2-ethylhexyl, 2- (bis (dimethylphosphino) ethylsilylidene) -1,3-dip Diphenyl lopanate, 2- (bis (dimethylphosphino) ethylsilylidene) -1,3-dipropanoic acid ditoluyl, 2- (bis (dimethylphosphino) ethylsilylidene) -1,3-dipropanoic acid dibenzyl, etc. Can be mentioned. In addition, these compounds can also be used individually or in combination of 2 or more types.

Among the compounds represented by the general formula (1), R ¹ is preferably a linear alkyl group having 1 to 12 carbon atoms, a branched alkyl group having 3 to 12 carbon atoms, a vinyl group, 3 to 3 carbon atoms. 12 linear alkenyl groups or branched alkenyl groups, linear halogen-substituted alkyl groups having 1 to 12 carbon atoms, branched halogen-substituted alkyl groups having 3 to 12 carbon atoms, and linear halogen-substituted alkenyl groups having 2 to 12 carbon atoms Group, branched halogen-substituted alkenyl group having 3 to 12 carbon atoms, cycloalkyl group having 3 to 12 carbon atoms, cycloalkenyl group having 3 to 12 carbon atoms, halogen-substituted cycloalkyl group having 3 to 12 carbon atoms, and 3 to 3 carbon atoms 12 is a compound selected from a halogen-substituted cycloalkenyl group having 12 carbon atoms and an aromatic hydrocarbon group having 6 to 12 carbon atoms, wherein X is nitrogen or silicon.

Among the compounds represented by the general formula (1), more preferable are those in which R ¹ is the above-mentioned preferable compound, and R ² and R ³ are each a linear alkyl group having 1 to 12 carbon atoms, carbon C3-C12 branched alkyl group, vinyl group, C3-C12 linear alkenyl group or branched alkenyl group, C1-C12 linear halogen-substituted alkyl group, C3-C12 branched halogen A substituted alkyl group, a linear halogen-substituted alkenyl group having 2 to 12 carbon atoms, a branched halogen-substituted alkenyl group having 3 to 12 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, a cycloalkenyl group having 3 to 12 carbon atoms, Any group selected from a halogen-substituted cycloalkyl group having 3 to 12 carbon atoms, a halogen-substituted cycloalkenyl group having 3 to 12 carbon atoms, and an aromatic hydrocarbon group having 6 to 12 carbon atoms Is that compound.

  In the solid catalyst component (I) in the present invention, an electron donating compound other than the component (A) represented by the general formula (1) (hereinafter also referred to as an electron donating compound (D)) is contained. May be. Examples of the electron donating compound (D) include acid halides, acid amides, nitriles, acid anhydrides, diether compounds and succinic acid esters, maleic acid esters, malonic acid esters, glutaric acid esters. And organic acid esters such as cyclohexane dicarboxylic acid esters, cyclohexene dicarboxylic acid esters, and phthalic acid diesters. Two or more of these electron donating compounds (D) can be used in combination.

The solid catalyst component (I) in the present invention may contain polysiloxane (hereinafter also simply referred to as “component (E)”). By using polysiloxane, the stereoregularity or crystallinity of the produced polymer can be improved, and further the fine powder of the produced polymer can be reduced. Polysiloxane is a polymer having a siloxane bond (—Si—O— bond) in the main chain, and is also collectively referred to as silicone oil, and has a viscosity at 25 ° C. of 0.02 to 100 cm ² / s ( ^{2 to} 10,000 centistokes). ), More preferably 0.03 to ⁵ cm ² / s (3 to 500 centistokes), a liquid or viscous chain, partially hydrogenated, cyclic or modified polysiloxane at room temperature.

  As the chain polysiloxane, dimethylpolysiloxane and methylphenylpolysiloxane are used. As the partially hydrogenated polysiloxane, methylhydrogen polysiloxane having a hydrogenation rate of 10 to 80% is used. As the cyclic polysiloxane, hexamethylcyclotrimethyl is used. Examples thereof include siloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, 2,4,6-trimethylcyclotrisiloxane, 2,4,6,8-tetramethylcyclotetrasiloxane.

  Further, the contents of titanium, magnesium, halogen atom and component (A) in the solid catalyst component (I) in the present invention are not particularly limited, but preferably 0.1 to 10% by weight of titanium, preferably 0.8. 5 to 8.0 wt%, more preferably 1.0 to 8.0 wt%, magnesium 10 to 40 wt%, more preferably 10 to 30 wt%, particularly preferably 13 to 25 wt%, halogen Atom is 20 to 89% by weight, more preferably 30 to 85% by weight, particularly preferably 40 to 75% by weight, and component (A) is 0.5 to 40% by weight in total, more preferably 1 to 30% by weight in total. Particularly preferred is a total of 2 to 25% by weight.

  The solid catalyst component (I) for olefin polymerization of the present invention comprises the following magnesium compound, titanium compound, and if necessary, a halogen compound other than the titanium compound and the component (A) of the general formula (1), Prepared by contacting each other.

  Examples of the magnesium compound (B) (hereinafter also simply referred to as “component (B)”) used in the method for producing a solid catalyst component of the present invention include magnesium dihalide, dialkylmagnesium, alkylmagnesium halide, dialkoxymagnesium. , One or more selected from diaryloxymagnesium, halogenated alkoxymagnesium, fatty acid magnesium and the like. Among these magnesium compounds, magnesium dihalide, a mixture of magnesium dihalide and dialkoxymagnesium, and dialkoxymagnesium are preferable, and dialkoxymagnesium is particularly preferable.

  Examples of dialkoxymagnesium include dimethoxymagnesium, diethoxymagnesium, dipropoxymagnesium, dibutoxymagnesium, ethoxymethoxymagnesium, ethoxypropoxymagnesium, and butoxyethoxymagnesium. These dialkoxymagnesiums may be prepared by reacting metal magnesium with alcohol in the presence of halogen or a halogen-containing metal compound. One or more of the above dialkoxymagnesium can be used in combination.

  Furthermore, in the preparation of the solid catalyst component of the present invention, when dialkoxymagnesium is used, it is preferably in the form of granules or powder, and the shape can be indefinite or spherical. For example, when spherical dialkoxymagnesium is used, a polymer powder having a better particle shape and a narrow particle size distribution can be obtained at the time of polymerization, and the handling operability of the produced polymer powder during the polymerization operation is improved, and the produced polymer Problems such as blockage caused by fine powder contained in the powder are solved.

  The spherical dialkoxymagnesium does not necessarily have a true spherical shape, and an elliptical shape or a potato shape can also be used. Specifically, the particle shape is such that the ratio (l / w) of the major axis diameter l to the minor axis diameter w is 3 or less, preferably 1 to 2, more preferably 1 to 1.5. .

  The average particle diameter of the dialkoxymagnesium is 1 to 1 in terms of an average particle diameter D50 (50% in the cumulative particle size distribution) when measured using a laser light scattering diffraction particle size analyzer. The thing of 200 micrometers is preferable and the thing of 5-150 micrometers is more preferable. In the case of spherical dialkoxymagnesium, the average particle size is preferably 1 to 100 μm, more preferably 5 to 50 μm, and even more preferably 10 to 40 μm. Further, as for the particle size, those having a small particle size distribution with less fine powder and coarse powder are desirable. Specifically, the particle size of 5 μm or less is preferably 20% or less, more preferably 10% or less when measured using a laser light scattering diffraction particle size measuring instrument. On the other hand, particles having a particle size of 100 μm or more are preferably 10% or less, more preferably 5% or less.

  Furthermore, the particle size distribution is ln (D90 / D10) (where D90 is the cumulative particle size in the volume cumulative particle size distribution and 90% of the particle size, and D10 is the cumulative particle size in the volume cumulative particle size distribution of 10%). Is preferably 3 or less, more preferably 2 or less.

  For example, JP-A-58-41832, JP-A-62-51633, JP-A-3-74341, JP-A-4-368391, and JP-A-8-73388 can be used to produce spherical dialkoxymagnesium as described above. It is exemplified in the publication.

  In the present invention, as the magnesium compound (B), either a solution-like magnesium compound or a magnesium compound suspension can be used. When the magnesium compound (B) is a solid, it is dissolved in a solvent having a solubilizing ability for the magnesium compound (B) to form a solution-like magnesium compound, or has a solubilizing ability for the magnesium compound (B). Suspend in a non-solvent and use as a magnesium compound suspension. When the magnesium compound (B) is a liquid, it can be used as it is as a solution-like magnesium compound, or it can be dissolved in a solvent capable of solubilizing the magnesium compound and used as a solution-like magnesium compound. .

  Examples of the compound that can solubilize the solid magnesium compound (B) include at least one compound selected from the group consisting of alcohols, ethers, and esters. Specifically, methanol, ethanol, propanol, butanol, pentanol, hexanol, 2-ethylhexanol, octanol, dodecanol, octadecyl alcohol, oleyl alcohol, benzyl alcohol, phenylethyl alcohol, cumyl alcohol, isopropyl alcohol, isopropylbenzyl alcohol Alcohols having 1 to 18 carbon atoms such as ethylene glycol; halogen-containing alcohols having 1 to 18 carbon atoms such as trichloromethanol, trichloroethanol and trichlorohexanol; methyl ether, ethyl ether, isopropyl ether, butyl ether, amyl ether , Tetrahydrofuran, ethyl benzyl ether, dibutyl ether, anisole, diphenyl ether and other charcoal Ethers having 2 to 20 atoms; metal acid esters such as tetraethoxytitanium, tetra-n-propoxytitanium, tetraisopropoxytitanium, tetrabutoxytitanium, tetrahexoxytitanium, tetrabutoxyzirconium, tetraethoxyzirconium, etc. Of these, alcohols such as ethanol, propanol, butanol and 2-ethylhexanol are preferable, and 2-ethylhexanol is particularly preferable.

  On the other hand, as a medium that does not have the solubilizing ability of the magnesium compound (B), a saturated hydrocarbon solvent or an unsaturated hydrocarbon solvent that does not dissolve the magnesium compound is used. Saturated hydrocarbon solvents or unsaturated hydrocarbon solvents are high in safety and industrial versatility, and are specifically linear or branched fats having a boiling point of 50 to 200 ° C. such as hexane, heptane, decane, and methylheptane. Alicyclic hydrocarbon compounds having a boiling point of 50 to 200 ° C. such as aromatic hydrocarbon compounds, cyclohexane, ethylcyclohexane and decahydronaphthalene, and aromatic hydrocarbon compounds having a boiling point of 50 to 200 ° C. such as toluene, xylene and ethylbenzene, Of these, linear aliphatic hydrocarbon compounds having a boiling point of 50 to 200 ° C. such as hexane, heptane, and decane, and aromatic hydrocarbon compounds having a boiling point of 50 to 200 ° C. such as toluene, xylene, and ethylbenzene are preferably used. Moreover, these may be used independently or may be used in mixture of 2 or more types.

Examples of the titanium compound (C) (hereinafter sometimes referred to as “component (C)”) used for the preparation of the component (I) in the present invention include, for example, the general formula (6);
Ti (OR ¹⁴ ) _j X _4-j (6)
(R ¹⁴ is a hydrocarbon group having 1 to 10 carbon atoms, and when a plurality of OR ¹⁴ groups are present, the plurality of R ¹⁹ may be the same or different, X is a halogen group, In the case where a plurality of are present, each X may be the same or different, and j is 0 or an integer of 1 to 4.).

  The tetravalent titanium compound represented by the general formula (6) is one or more compounds selected from the group consisting of an alkoxy titanium, a titanium halide, and an alkoxy titanium halide group. Specifically, titanium tetrahalide, titanium tetrachloride, titanium tetrabromide, titanium tetraiodide and other titanium tetrahalides, alkoxy titanium halides such as methoxytitanium trichloride, ethoxytitanium trichloride, propoxytitanium trichloride, n-butoxy Alkoxy titanium trihalides such as titanium trichloride, dimethoxy titanium dichloride, diethoxy titanium dichloride, dipropoxy titanium dichloride, di-n-butoxy titanium dichloride, dialkoxy titanium dihalide, trimethoxy titanium chloride, triethoxy titanium chloride, Trialkoxy titanium halides such as tripropoxy titanium chloride and tri-n-butoxy titanium chloride are exemplified. Among these, halogen-containing titanium compounds are preferably used, and titanium tetrahalides such as titanium tetrachloride, titanium tetrabromide, and titanium tetraiodide are preferable, and titanium tetrachloride is particularly preferable. These titanium compounds may be used alone or in combination of two or more. Further, the tetravalent titanium compound represented by the general formula (6) may be used after diluted with a hydrocarbon compound or a halogenated hydrocarbon compound.

  In the preparation of the solid catalyst component (I) of the present invention, a halogen compound other than the titanium compound (C) may be used as necessary. Examples of the halogen compound include tetravalent halogen-containing silicon compounds. More specifically, tetrachlorosilane (silicon tetrachloride), silane tetrahalides such as tetrabromosilane, methoxytrichlorosilane, ethoxytrichlorosilane, propoxytrichlorosilane, n-butoxytrichlorosilane, dimethoxydichlorosilane, diethoxydichlorosilane, Examples include alkoxy group-containing halogenated silanes such as dipropoxydichlorosilane, di-n-butoxydichlorosilane, trimethoxychlorosilane, triethoxychlorosilane, tripropoxychlorosilane, and tri-n-butoxychlorosilane.

  The component (A) used in the preparation of the solid catalyst component (I) of the present invention is the same as the component (A) of the solid catalyst component (I) of the present invention, and the description thereof is omitted. Further, the electron donating compound (D) used as necessary in the preparation of the solid catalyst component (I) of the present invention is the component (A) of the solid catalyst component (I) of the present invention, the electron donating compound ( This is the same as D), and description thereof is omitted. Further, the polysiloxane (E) used as necessary in the preparation of the solid catalyst component (I) of the present invention is the same as the polysiloxane (E) of the solid catalyst component (I) of the present invention, and its description Is omitted.

  In the present invention, suitable methods for preparing the solid catalyst component (I) include, for example, a method of co-grinding a solid magnesium compound having no reducing property, component (A) and titanium halide, and an adduct such as alcohol. Contacting magnesium halide compound, component (A) and titanium halide in the presence of inert hydrocarbon solvent, dialkoxymagnesium, component (A) and titanium halide in the presence of inert hydrocarbon solvent And a method in which a solid catalyst is deposited by bringing the reducing magnesium compound, component (A) and titanium halide into contact with each other.

  Below, the specific preparation method of the solid catalyst component (I) for olefin polymerization is illustrated. In the following methods (1) to (16), in addition to the component (A), an electron donating compound (D) other than the component (A) may be used in combination. Furthermore, you may perform the said contact in coexistence of other reaction reagents, such as silicon, phosphorus, aluminum, and surfactant, for example.

(1) After dissolving magnesium halide in an alkoxytitanium compound, the organosilicon compound is contacted to obtain a solid product, the solid product is reacted with titanium halide, and then component (A) is contacted. To prepare a solid catalyst component (I) for olefin polymerization. At this time, the component (I) can be further subjected to preliminary polymerization treatment with an organoaluminum compound, an organosilicon compound and olefins.
(2) After reacting magnesium halide and alcohol to make a uniform solution, the carboxylic acid anhydride is brought into contact with the homogeneous solution, and then the titanium halide and component (A) are contacted with the solution to obtain a solid product. A solid catalyst component (I) for olefin polymerization is prepared by further contacting a titanium halide with the solid product.
(3) An organomagnesium compound is synthesized by reacting magnesium metal, butyl chloride, and dialkyl ether, and the organomagnesium compound is contacted with alkoxytitanium to obtain a solid product. And a method of preparing a solid catalyst component (I) for olefin polymerization by catalytically reacting titanium halide. At this time, the solid component can be preliminarily polymerized with an organoaluminum compound, an organosilicon compound and an olefin to prepare a solid catalyst component (I) for olefin polymerization.
(4) An organomagnesium compound such as dialkylmagnesium and an organoaluminum compound are brought into contact with alcohol in the presence of a hydrocarbon solvent to form a homogeneous solution, and a silicon compound such as silicon tetrachloride is brought into contact with this solution to form a solid. Then, the solid product is contacted with titanium halide and component (A) in the presence of an aromatic hydrocarbon solvent, and further contacted with titanium tetrachloride to solid catalyst component for olefin polymerization. A method of obtaining (I).
(5) Magnesium chloride, tetraalkoxytitanium and aliphatic alcohol are contact-reacted in the presence of a hydrocarbon solvent to obtain a homogeneous solution, and after contacting the solution and titanium halide, the temperature is raised to precipitate a solid, A method of obtaining the solid catalyst component (I) for olefin polymerization by bringing the solid (B) into contact with the component and further reacting with titanium halide.
(6) Metal magnesium powder, alkyl monohalogen compound and iodine are contact-reacted, and then tetraalkoxytitanium, acid halide and aliphatic alcohol are contact-reacted in the presence of a hydrocarbon solvent to form a homogeneous solution, and the solution After adding titanium tetrachloride to the mixture, the temperature is raised to precipitate a solid product. The solid product is contacted with component (A) and further reacted with titanium tetrachloride to solidify the solid catalyst component (I) for olefin polymerization. How to prepare.
(7) Suspend dialkoxymagnesium in a hydrocarbon solvent, then contact with titanium tetrachloride, raise the temperature, contact with component (A) to obtain a solid product, and convert the solid product to hydrocarbon A method of preparing a solid catalyst component (I) for olefin polymerization by washing with a solvent and then contacting with titanium tetrachloride again in the presence of a hydrocarbon solvent. At this time, the solid component can be heat-treated in the presence or absence of a hydrocarbon solvent.
(8) After dialkoxymagnesium is suspended in a hydrocarbon solvent, it is contacted with titanium halide and component (A) to obtain a solid product. After washing the solid product with an inert organic solvent, A method for obtaining a solid catalyst component (I) for olefin polymerization by contacting and reacting with a titanium halide again in the presence of a hydrocarbon solvent. At this time, the solid component and the titanium halide can be contacted twice or more.
(9) dialkoxymagnesium, calcium chloride and alkoxy group-containing silicon compound are co-ground, and the obtained pulverized solid is suspended in a hydrocarbon solvent, and then contacted with titanium halide and component (A), Next, a method for preparing a solid catalyst component (I) for olefin polymerization by further contacting a titanium halide.
(10) The dialkoxymagnesium and component (A) are suspended in a hydrocarbon solvent, the suspension is contacted with titanium halide and reacted to obtain a solid product, and the solid product is washed with a hydrocarbon solvent. Thereafter, the method further comprises contacting a titanium halide in the presence of a hydrocarbon solvent to obtain a solid catalyst component (I) for olefin polymerization.
(11) A solid catalyst component (I) for olefin polymerization is prepared by contacting aliphatic magnesium such as magnesium stearate with titanium halide and component (A), and then further contacting with titanium halide. Method.
(12) The dialkoxymagnesium is suspended in a hydrocarbon solvent, brought into contact with the titanium halide, heated, and contacted with the component (A) to obtain a solid product. The solid product is treated with a hydrocarbon solvent. In the presence of a hydrocarbon solvent and again contacting with a titanium halide to prepare the solid catalyst component (I) for olefin polymerization, which is one of the above suspension / contact and catalytic reaction In the step, the solid catalyst component (I) for olefin polymerization is prepared by contacting aluminum chloride.
(13) Dialkoxymagnesium, 2-ethylhexyl alcohol, and carbon dioxide are contact-reacted in the presence of a hydrocarbon solvent to form a homogeneous solution, and this solution is contacted with titanium halide and component (A) to form a solid product. The solid product is further dissolved in tetrahydrofuran, and then a solid product is further precipitated. The solid product is contacted with titanium halide, and if necessary, contact reaction with titanium halide is repeated to obtain olefins. A method for preparing a solid catalyst component (I) for polymerization. In this case, for example, a silicon compound such as tetrabutoxysilane may be used in any of the contact, contact reaction, and dissolution steps.
(14) After suspending magnesium chloride, an organic epoxy compound and a phosphoric acid compound in a hydrocarbon solvent, the mixture is heated to obtain a homogeneous solution, and this solution is contacted with a carboxylic acid anhydride and a titanium halide to form a solid. A product is obtained, and the solid product is allowed to react with the component (A). The obtained reaction product is washed with a hydrocarbon solvent, and then again contacted with a titanium halide in the presence of the hydrocarbon solvent. To obtain a solid catalyst component (I) for olefin polymerization.
(15) Contact reaction of dialkoxymagnesium, titanium compound and component (A) in the presence of a hydrocarbon solvent, contact reaction of the resulting reaction product with a silicon compound such as polysiloxane, and further contact with a titanium halide A method of obtaining a solid catalyst component (I) for olefin polymerization by reacting, then contacting a metal salt of an organic acid, and then contacting a titanium halide again.
(16) After dialkoxymagnesium and component (A) are suspended in a hydrocarbon solvent, the temperature is raised and brought into contact with the silicon halide, and then brought into contact with the titanium halide to obtain a solid product. A method of preparing a solid catalyst component (I) for polymerizing olefins by washing the product with a hydrocarbon solvent and then again contacting with a titanium halide in the presence of the hydrocarbon solvent. At this time, the solid component may be heat-treated in the presence or absence of a hydrocarbon solvent.

  In addition, in order to further improve the polymerization activity at the time of olefin polymerization and the stereoregularity of the produced polymer, a titanium halide is newly added to the solid catalyst component (I) after washing in the methods (1) to (16). And a hydrocarbon solvent are contacted at 20 to 100 ° C., the temperature is raised, a reaction treatment (secondary reaction treatment) is performed, and then an operation of washing with a liquid inert organic solvent at room temperature is repeated 1 to 10 times. May be.

  As a method for preparing component (I) in the present invention, any of the above methods can be suitably used. Among them, (1), (3), (4), (5), (7), The method (8) or (10) is preferred, and the method (3), (4), (7), (8), (10) provides a solid catalyst component for olefin polymerization having high stereoregularity. Are particularly preferable. The most preferred preparation method is to suspend dialkoxymagnesium and the ester compound (A) in a hydrocarbon solvent selected from linear hydrocarbons or branched aliphatic hydrocarbons, alicyclic hydrocarbons and aromatic hydrocarbons, The suspension is added to titanium halide and reacted to obtain a solid product. The solid product is washed with a hydrocarbon solvent, and further contacted with titanium halide in the presence of a hydrocarbon solvent to form an olefin. This is a method for obtaining a solid catalyst component (I) for homopolymerization.

  The obtained solid catalyst component (I) for olefin polymerization is a powdered solid component by removing the remaining solvent until the weight ratio to the solid component is 1/3 or less, preferably 1/20 to 1/6. It is preferable to remove fine powder having a particle size of 11 μm or less mixed in the powder solid component by means such as air classification.

  The amount of each component used in preparing the solid catalyst component (I) varies depending on the preparation method and cannot be defined unconditionally. For example, a tetravalent titanium halogen compound (C) per mole of the magnesium compound (B) can be used. ) Is 0.5 to 100 mol, preferably 0.5 to 50 mol, more preferably 1 to 10 mol, and component (A) (when component (I) does not contain an electron-donating compound (D)) Or the total amount of component (A) and electron donating compound (D) (when component (I) contains electron donating compound (D)) is 0.01 to 10 mol, preferably 0.01 to 1 Mol, more preferably 0.02 to 0.6 mol, the solvent is 0.001 to 500 mol, preferably 0.001 to 100 mol, more preferably 0.005 to 10 mol, and polysiloxane (E ) 0.01-100g Preferably 0.05～80G, more preferably 1 to 50 g.

(Description of olefin polymerization catalyst)
The olefin polymerization catalyst of the present invention comprises (I) a solid catalyst component, (II) an organoaluminum compound (hereinafter sometimes simply referred to as “component (F)”), and (III) an external electron donating compound (hereinafter referred to as “component”). , Simply referred to as “component (G)”) to form a catalyst for olefin polymerization, and polymerization or copolymerization of olefins can be carried out in the presence of the catalyst.

The organoaluminum compound (II) is not particularly limited as long as it is a compound represented by the above general formula (2), but R ⁴ is preferably an ethyl group or an isobutyl group, and Q is a hydrogen atom, chlorine An atom, a bromine atom, an ethoxy group, and a phenoxy group are preferable, and p is preferably 2, 2.5 or 3, and 3 is particularly preferable.

  Specific examples of such organoaluminum compounds include trialkylaluminum such as triethylaluminum, triisopropylaluminum, tri-n-butylaluminum and triisobutylaluminum, alkylaluminum halide such as diethylaluminum chloride and diethylaluminum bromide, diethyl Alkyl aluminum hydrides such as aluminum hydride and diisobutylaluminum hydride, alkylaluminum alkoxides such as diethylaluminum ethoxide and diethylaluminum phenoxide, and the like. Alkyl aluminum halides such as diethylaluminum chloride, or triethylaluminum and tri-n-butylaluminum , Triisobutylaluminum etc. Trialkyl aluminum is preferably used, particularly preferably triethyl aluminum and triisobutyl aluminum. These aluminum compounds can be used alone or in combination of two or more.

  Examples of the (III) external electron donating compound used in forming the olefin polymerization catalyst of the present invention include organic compounds containing oxygen atoms or nitrogen atoms, such as alcohols, phenols, ethers, Esters, ketones, acid halides, aldehydes, amines, amides, nitriles, isocyanates, organosilicon compounds, especially organosilicon compounds having a Si—O—C bond or Si—N—C bonds And aminosilane compounds.

  Among these, esters such as ethyl benzoate, ethyl p-methoxybenzoate, ethyl p-ethoxybenzoate, methyl p-toluate, ethyl p-toluate, methyl anisate, ethyl anisate, 1,3 -Diethers, organosilicon compounds containing Si-O-C bonds, aminosilane compounds containing Si-N-C bonds are preferred, organosilicon compounds having Si-O-C bonds, aminosilanes having Si-N-C bonds Particularly preferred is at least one selected from a compound and a 1,3-diether compound.

Among the external electron donating compounds of (III) above, as the organosilicon compound having a Si—O—C bond,
R ⁵ _q Si (OR ⁶ ) _4-q (3)
(In the formula, R ⁵ is an alkyl group having 1 to 12 carbon atoms, a vinyl group, an alkenyl group having 3 to 12 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms or a cycloalkenyl group, and an aromatic group having 6 to 15 carbon atoms. Either a hydrocarbon group or an aromatic hydrocarbon group having a substituent, which may be the same or different, R ⁶ is an alkyl group having 1 to 4 carbon atoms, a vinyl group, or an alkenyl group having 3 to 12 carbon atoms. , A cycloalkyl group having 3 to 6 carbon atoms, an aromatic hydrocarbon group having 6 to 12 carbon atoms, and an aromatic hydrocarbon group having 7 to 12 carbon atoms having a substituent, which may be the same or different. q is an integer of 0 ≦ q ≦ 3)).

Among the external electron donating compounds of the above (III), as the aminosilane compound having a Si—N—C bond, the following general formula (4);
(R ⁷ R ⁸ N) _s SiR ⁹ _4-s (4)
(Wherein R ⁷ and R ⁸ are a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, a vinyl group, an alkenyl group having 3 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms or a cycloalkenyl group, R ⁹ is an aryl group of 6 to 20, which may be the same or different, and may be bonded to each other to form a ring, and R ⁹ is an alkyl group having 1 to 20 carbon atoms, a vinyl group, or 3 to 3 carbon atoms. 12 alkenyl groups, C1-C20 alkoxy groups, vinyloxy groups, C3-C20 alkenyloxy groups, C3-C20 cycloalkyl groups or cycloalkyloxy groups, or C6-C20 aryls represents a group or an aryloxy group, if R ⁹ is plural, R ⁹ is selected from the same or different .s is an integer from 1 to 3. aminosilane compounds include et represented by) That.

  Examples of the organosilicon compound include phenylalkoxysilane, alkylalkoxysilane, phenylalkylalkoxysilane, cycloalkylalkoxysilane, alkyl (cycloalkyl) alkoxysilane, (alkylamino) alkoxysilane, and alkyl (alkylamino) alkoxysilane. , Cycloalkyl (alkylamino) alkoxysilane, tetraalkoxysilane, tetrakis (alkylamino) silane, alkyltris (alkylamino) silane, dialkylbis (alkylamino) silane, trialkyl (alkylamino) silane, etc. Specifically, phenyltrimethoxysilane, t-butyltrimethoxysilane, diisopropyldimethoxysilane isopropylisobutyldimethoxysilane Diisopentyldimethoxysilane, bis (2-ethylhexyl) dimethoxysilane, t-butylmethyldimethoxysilane, t-butylethyldimethoxysilane, dicyclopentyldimethoxysilane, dicyclohexyldimethoxysilane, cyclohexylcyclopentyldimethoxysilane, cyclohexylmethyldimethoxysilane, tetraethoxy Silane, tetrabutoxysilane, bis (ethylamino) methylethylsilane, t-butylmethylbis (ethylamino) silane, bis (ethylamino) dicyclohexylsilane, dicyclopentylbis (ethylamino) silane, bis (methylamino) (methyl Cyclopentylamino) methylsilane, diethylaminotriethoxysilane, bis (cyclohexylamino) dimethoxysilane, bis (par Hydroisoquinolino) dimethoxysilane, bis (perhydroquinolino) dimethoxysilane, ethyl (isoquinolino) dimethoxysilane, diethylaminotrimethoxysilane, diethylaminotriethoxysilane, trimethylsilyltrimethoxysilane, trimethylsilyltriethoxysilane, etc. Phenyltrimethoxysilane, t-butylmethyldimethoxysilane, t-butylethyldimethoxysilane, diisopropyldimethoxysilane, isopropylisobutyldimethoxysilane, diisopentyldimethoxysilane, diphenyldimethoxysilane, dicyclopentyldimethoxysilane, cyclohexylmethyldimethoxysilane, tetramethoxy Silane, tetraethoxysilane, t-butylmethylbis (ethylamino) sila Bis (ethylamino) dicyclohexylsilane, dicyclopentylbis (ethylamino) silane, bis (perhydroisoquinolino) dimethoxysilane, diethylaminotrimethoxysilane, or diethylaminotriethoxysilane is preferably used. Moreover, this organosilicon compound can also be used individually by 1 type or in combination of 2 or more types selected from the organosilicon compound represented by General formula (3) and the organosilicon compound represented by General formula (4).

Among the external electron donating compounds of the above (III), as the 1,3-diether compound, the following general formula (5);
R ¹⁰ OCH ₂ CR ¹¹ R ¹² CH ₂ OR ¹³ (5)
(Wherein R ¹¹ and R ¹² are a hydrogen atom, a halogen atom, an alkyl group having 1 to 12 carbon atoms, a vinyl group, an alkenyl group having 3 to 12 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, or a cycloalkenyl group. , An aromatic hydrocarbon group having 6 to 12 carbon atoms or a halogen-substituted aromatic hydrocarbon group, an aromatic hydrocarbon group having 7 to 12 carbon atoms having a substituent, an alkylamino group having 1 to 12 carbon atoms, or the number of carbon atoms Any one of 2 to 12 dialkylamino groups which may be the same or different and may be bonded to each other to form a ring, and R ¹⁰ and R ¹³ are each an alkyl group having 1 to 12 carbon atoms, a vinyl group, C3-C12 alkenyl group, C3-C6 cycloalkyl group, C6-C12 aromatic hydrocarbon group or halogen-substituted aromatic hydrocarbon group, or C7-C12 having a substituent And may be the same or different from each other).

  Specifically, 2-isopropyl-2-isobutyl-1,3-dimethoxypropane, 2,2-di-isobutyl-1,3-dimethoxypropane, 2-isopropyl-2-isopentyl-1,3-dimethoxypropane, 2,2-dicyclohexyl-1,3-dimethoxypropane, 2,2-bis (cyclohexylmethyl) 1,3-dimethoxypropane, 9,9-bis (methoxymethyl) fluorene and the like, among others, 2-isopropyl- 2-isobutyl-1,3-dimethoxypropane, 9,9-bis (methoxymethyl) fluorene and the like are preferably used.

  Further, as the external electron donating compound of (III), the organosilicon compound represented by the general formula (3), the organosilicon compound represented by the general formula (4), and the diether represented by the general formula (5) One or a combination of two or more of the compounds can also be used.

In the present invention, olefins are polymerized or copolymerized in the presence of the olefin polymerization catalyst. Examples of olefins include ethylene, propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, vinylcyclohexane, and the like, and these olefins can be used alone or in combination of two or more. Ethylene, propylene and 1-butene are preferably used. Particularly preferred is propylene.
When propylene is polymerized, it can be copolymerized with other olefins. Examples of olefins to be copolymerized include ethylene, 1-butene, 1-pentene, 4-methyl-1-pentene, vinylcyclohexane, and the like, and these olefins can be used alone or in combination of two or more. In particular, ethylene and 1-butene are preferably used.

  The amount of each component used is arbitrary as long as it does not affect the effect of the present invention, and is not particularly limited. Usually, the organoaluminum compound (F) is titanium in the solid catalyst component (I). It is used in the range of 1 to 2000 mol, preferably 50 to 1000 mol, per mol of atoms. The external electron donating compound (G) is used in an amount of 0.002 to 10 mol, preferably 0.01 to 2 mol, particularly preferably 0.01 to 0.5 mol, per 1 mol of the component (F). .

  The order of contacting the components is arbitrary, but the organoaluminum compound (F) is first charged into the polymerization system, and then the external electron donating compound (G) is contacted and then the component (I) is contacted. desirable. The polymerization of olefin in the present invention can be carried out in the presence or absence of an organic solvent, and the olefin monomer such as propylene can be used in any state of gas and liquid. The polymerization temperature is 200 ° C. or lower, preferably 100 ° C. or lower, and the polymerization pressure is 10 MPa or lower, preferably 5 MPa or lower. Moreover, any of a continuous polymerization method and a batch type polymerization method is possible. Furthermore, the polymerization reaction may be performed in one stage or in two or more stages.

  Furthermore, in the present invention, when polymerizing an olefin using a catalyst containing a solid catalyst component for olefin polymerization, an organoaluminum compound, and an external electron donating compound (also referred to as main polymerization), catalytic activity, stereoregularity and In order to further improve the particle properties and the like of the polymer produced, it is desirable to carry out prepolymerization prior to the main polymerization. In the prepolymerization, the same olefins as in the main polymerization or monomers such as styrene can be used.

  In carrying out the prepolymerization, the order of contacting the respective components and monomers is arbitrary. Preferably, the component (F) is first charged into the prepolymerization system set to an inert gas atmosphere or an olefin gas atmosphere, and then the solid After contacting the catalyst component (I), an olefin such as propylene, or a mixture of propylene and one or more other olefins is contacted.

  When prepolymerization is performed by combining component (G), component (F) is first charged in a prepolymerization system set to an inert gas atmosphere or olefin gas atmosphere, and then component (G) is contacted. Further, after contacting the solid catalyst component (I) further, a method of contacting an olefin such as propylene or a mixture of propylene and one or more other olefins is desirable.

  When producing a propylene block copolymer, it is performed by multistage polymerization of two or more stages, usually propylene is polymerized in the presence of a polymerization catalyst in the first stage, and ethylene and propylene are copolymerized in the second stage. Can be obtained. An α-olefin other than propylene can be coexisted or polymerized alone during the second stage or subsequent polymerization. Examples of α-olefins include ethylene, 1-butene, 4-methyl-1-pentene, vinylcyclohexane, 1-hexene, 1-octene and the like. Specifically, polymerization is carried out by adjusting the polymerization temperature and time so that the proportion of the polypropylene part is 20 to 80% by weight in the first stage, and then in the second stage, ethylene and propylene or other α -Olefin is introduced and polymerized so that the proportion of rubber part such as ethylene-propylene rubber (EPR) is 20 to 80% by weight. The polymerization temperatures in the first and second stages are both 200 ° C. or less, preferably 100 ° C. or less, and the polymerization pressure is 10 MPa or less, preferably 5 MPa or less. In the case of polymerization time in each polymerization stage or continuous polymerization, the residence time is usually 1 minute to 5 hours.

  Examples of the polymerization method include a slurry polymerization method using a solvent of an inert hydrocarbon compound such as cyclohexane and heptane, a bulk polymerization method using a solvent such as liquefied propylene, and a gas phase polymerization method using substantially no solvent. It is done. Preferred polymerization methods are bulk polymerization and gas phase polymerization.

In the compound represented by the general formula (1), it is presumed that the two ester groups are selectively coordinated at a certain appropriate site on the magnesium compound by controlling the appropriate distance and the direction of coordination. In addition, due to this effect, restrictions are imposed on the position where the titanium compound that forms the active site is supported, and as a result, a large amount of titanium active sites that generate stereoregularity and high activity can be formed selectively. Note that the two ester groups are characterized by being easily removed from the site once coordinated due to the electronic and steric effects of the group represented by (R ¹ _n X =). It is thought that the effect of becoming narrower than necessary is prevented. Therefore, in the present invention, the solid catalyst component (I) contains the compound represented by the general formula (1) as an electron donating compound, so that olefins having an appropriate molecular weight distribution that is neither wide nor narrow. A polymer is obtained in high yield.

EXAMPLES Next, the present invention will be described more specifically with reference to examples. However, this is merely an example and does not limit the present invention.

(Production Example 1)
Synthesis of diethyl N-phenylimino-1,3-dipropanoate (A-1) Into a 500 ml flask equipped with a stirrer and a reflux apparatus, 200 ml of toluene, diethyl 2-oxo-1,3-propanoate 17.2 Gram and 10.2 grams of aniline were introduced and refluxed for 4 hours. After completion of the reaction, the organic layer was collected and the solvent was distilled off, followed by column separation to obtain 4.1 gram of product.

As a result of analyzing the ¹ H-NMR spectrum by a nuclear magnetic resonance apparatus, the chemical shift values were 1.25 (t, 6H), 4.20 (q, 4H), 6.79 to 7.43 (m), respectively. 5H), and from this, it was confirmed that the obtained product was diethyl N-phenylimino-1,3-dipropanoate. As a result of measurement by gas chromatography, the purity of the obtained diethyl N-phenylimino-1,3-dipropanoate was 95.6%.

(Production Example 2)
Synthesis of 2- (tributylphosphoranylidene) -1,3-dipropanoic acid dimethyl (A-2) A flask having an internal volume of 500 ml equipped with a stirrer and a reflux apparatus and having the inside replaced with argon was charged with 100 ml of ethyl acetate, 20 ml of isobutylphosphine and 10.2 ml of dimethyl α-chloromalonate were introduced under a stream of argon. Next, 11.5 ml of triethylamine was slowly introduced while the flask was cooled with ice water, and then reacted at room temperature for 1 hour. After completion of the reaction, the solution was subjected to column separation, and the solvent was further distilled off to obtain a viscous product.

As a result of analyzing the ¹ H-NMR spectrum with a nuclear magnetic resonance apparatus, the chemical shift values were 0.76 (t, 6H), 1.21-1.28 (m, 9H), 1.91-1 respectively. .98 (m, 12H), 3.47 (s, 6H), and this indicates that the product obtained is dimethyl 2- (tributylphosphoranylidene) -1,3-dipropanoate. confirmed. As a result of measurement by LC-MS, the purity of the obtained dimethyl 2- (tributylphosphoranylidene) -1,3-dipropanoate was 98.5%, and the yield was 35%. It was.

[Synthesis of solid catalyst components]
10 g (87.4 mmol) of diethoxymagnesium was taken into a 500 ml flask equipped with a stirrer and sufficiently substituted with nitrogen gas, and 55 ml of toluene was added to make a suspension, and then the suspension 30 ml of titanium tetrachloride and 15.3 mmol (3.8 g) of diethyl N-phenylimino-1,3-dipropanoate (A-1) obtained in Production Example 1 were added, and the temperature was further raised to 100 ° C. . Thereafter, the reaction was carried out for 90 minutes while maintaining a temperature of 100 ° C. After completion of the reaction, the supernatant was extracted, 20 ml of TiCl ₄ was added, and further reacted at 100 ° C. for 2 hours. After completion of the reaction, the reaction product was washed 4 times with 75 ml of 100 ° C. toluene. Subsequently, it was washed 6 times with 75 ml of n-heptane at 40 ° C. to obtain a solid catalyst component. When the solid content of the solid catalyst component was separated and the titanium content in the solid content was measured, it was 3.8% by weight.

[Formation and polymerization of polymerization catalyst]
In an autoclave with a stirrer having an internal volume of 2.0 liters completely substituted with nitrogen gas, 1.32 mmol of triethylaluminum, 0.13 mmol of cyclohexylmethyldimethoxysilane (CMDMS), and 0.0026 as a titanium atom as the solid catalyst component. A millimolar charge was formed to form a polymerization catalyst. Thereafter, 1.5 liters of hydrogen gas and 1.4 liters of liquefied propylene were charged, preliminarily polymerized at 20 ° C. for 5 minutes, then heated up, and polymerized at 70 ° C. for 1 hour. Polymerization activity per gram of the solid catalyst component at this time, ratio of p-xylene solubles in the produced polymer (XS), melt flow rate value (MFR) in the produced polymer, and molecular weight distribution of the produced polymer Are shown in Table 1.

(Polymerization activity per gram of solid catalyst component)
The polymerization activity per gram of the solid catalyst component was determined by the following formula.
Polymerization activity (g-pp / g-catalyst) = mass of polymer (g) / mass of solid catalyst component (g)

(Measurement of xylene solubles (XS) of polymer)
A flask equipped with a stirrer was charged with 4.0 g of a polymer (polypropylene) and 200 ml of p-xylene, and the external temperature was set to be equal to or higher than the boiling point of xylene (about 150 ° C.). While maintaining the temperature of p-xylene at the boiling point (137 to 138 ° C.), the polymer was dissolved over 2 hours. Thereafter, the liquid temperature was cooled to 23 ° C. over 1 hour, and insoluble components and dissolved components were separated by filtration. A solution of the dissolved component was collected, p-xylene was distilled off by heating under reduced pressure, and the resulting residue was defined as xylene solubles (XS), and the weight was relative to the polymer (polypropylene) (wt% ).

(Polymer melt flowability (MFR))
The melt flow rate (MFR) indicating the melt flowability of the polymer was measured according to ASTM D 1238 and JIS K 7210.

(Molecular weight distribution of polymer)
The molecular weight distribution of the polymer is determined by the ratio Mw / Mn of the weight average molecular weight Mw and the number average molecular weight Mn determined by gel permeation chromatography (GPC) (Alliance GPC / V2000 manufactured by Waters) under the following conditions. evaluated.
Solvent: o-dichlorobenzene (ODCB)
Measurement temperature: 140 ° C
Column: Showa Denko UT-806 × 3, HT-803 × 1 Sample concentration: 1 mg / mL-ODCB (10 mg / 10 ml-ODCB)
Injection volume: 0.5ml
Flow rate: 1.0 ml / min

  A polymerization catalyst was formed and polymerized in the same manner as in Example 1 except that 0.13 mmol of dicyclopentyldimethoxysilane (DCPDMS) was used instead of 0.13 mmol of cyclohexylmethyldimethoxysilane (CMDMS). The results are shown in Table 1.

  Instead of diethyl N-phenylimino-1,3-dipropanoate (A-1) 15.3 mmol, dimethyl 2- (tributylphosphoranylidene) -1,3-dipropanoate (A) obtained in Production Example 2 -2) Preparation of a solid catalyst component, formation of a polymerization catalyst, and evaluation of polymerization were performed in the same manner as in Example 1 except that 15.3 mmol was used. The titanium content in the obtained solid catalyst component was 3.9% by weight. The results are shown in Table 1.

  A polymerization catalyst was formed and polymerized in the same manner as in Example 3 except that 0.13 mmol of dicyclopentyldimethoxysilane (DCPDMS) was used instead of 0.13 mmol of cyclohexylmethyldimethoxysilane (CMDMS). The results are shown in Table 1.

Comparative Example 1
The solid catalyst component was the same as in Example 1 except that 15.3 mmol of diethyl diisobutylmalonate was used instead of 15.3 mmol of diethyl N-phenylimino-1,3-dipropanoate (A-1). Preparation, polymerization catalyst formation and polymerization evaluation. The titanium content in the obtained solid catalyst component was 3.9% by weight. The results are shown in Table 1.

Comparative Example 2
A polymerization catalyst was formed and polymerized in the same manner as in Comparative Example 1 except that 0.13 mmol of dicyclopentyldimethoxysilane (DCPDMS) was used instead of 0.13 mmol of cyclohexylmethyldimethoxysilane (CMDMS). The results are shown in Table 1.

Comparative Example 3
Preparation of a solid catalyst component in the same manner as in Example 1 except that 15.3 mmol of diethyl diisopropyl succinate was used instead of 15.3 mmol of diethyl N-phenylimino-1,3-dipropanoate (A-1). Then, formation of a polymerization catalyst and polymerization evaluation were performed. As a result, the titanium content in the obtained solid catalyst component was 2.1% by weight. The results are shown in Table 1.

[Synthesis of solid catalyst components]
120 ml of purified n-heptane was introduced into a 500 ml round-bottom flask thoroughly substituted with nitrogen. Further, 15 g of anhydrous magnesium chloride and 106 ml of tetrabutoxy titanium were added and reacted at 90 ° C. for 1.5 hours to obtain a uniform solution. The homogeneous lysate was then cooled to 40 ° C. 24 ml of methyl hydrogen polysiloxane (20 centistokes) was added while maintaining the temperature at 40 ° C., and a precipitation reaction was performed for 5 hours. The precipitated solid product was thoroughly washed with purified n-heptane.

Next, 40 g of the precipitated solid product was introduced into a 500 ml round bottom flask equipped with a stirrer sufficiently substituted with nitrogen, and further purified n-heptane was introduced, so that the concentration of the solid product was 200 mg / ml. I tried to become. To this, 12 ml of SiCl ₄ was added and reacted at 90 ° C. for 3 hours. The reaction product was thoroughly washed with purified n-heptane, and purified n-heptane was introduced so that the concentration of the reaction product was 100 mg / ml. Next, 10 mmol of diethyl N-phenylimino-1,3-dipropanoate (A-1) was added, and the reaction was performed at 70 ° C. for 1 hour. The reaction product was thoroughly washed with purified n-heptane, and 100 ml of purified n-heptane was introduced. Next, 20 ml of TiCl ₄ was added, followed by reaction at 95 ° C. for 3 hours. After completion of the reaction, the supernatant was extracted, and 20 ml of TiCl ₄ was further added, followed by reaction at 100 ° C. for 2 hours. The reaction product was thoroughly washed with purified n-heptane. The obtained solid product was dried under reduced pressure to obtain a solid catalyst component. The obtained solid catalyst component had a titanium content of 3.8% by weight.

[Formation and polymerization of polymerization catalyst]
A polymerization catalyst was formed and evaluated for polymerization in the same manner as in Example 1 except that the solid catalyst component obtained above was used. The results are shown in Table 1.

Comparative Example 4
In the same manner as in Example 5, except that 15.3 mmol of diethyl diisobutylmalonate was used instead of 15.3 mmol of diethyl N-phenylimino-1,3-dipropanoate (A-1), Preparation, polymerization catalyst formation and polymerization evaluation were performed. In addition, the titanium content rate of the obtained solid catalyst component was 3.4 weight%. The results are shown in Table 1.

  The catalyst for olefin polymerization of the present invention can obtain an olefin polymer having an appropriate molecular weight distribution that is neither wide nor narrow in high yield while maintaining high stereoregularity. Therefore, it is possible to provide a general-purpose polyolefin that can utilize an existing molding machine at a low cost, and is expected to be useful in the production of a copolymer of olefins having high functionality.

Claims (9)

Titanium, magnesium, halogen and the following general formula (1);
R ¹ _n X = C (COOR ² ) (COOR ³ ) (1)
(In the formula, R ¹ is a hydrogen atom, a halogen atom, a linear alkyl group having 1 to 20 carbon atoms, a branched alkyl group having 3 to 20 carbon atoms, a vinyl group, or a linear alkenyl group having 3 to 20 carbon atoms. Or a branched alkenyl group, a C1-C20 linear halogen-substituted alkyl group, a C3-C20 branched halogen-substituted alkyl group, a C2-C20 linear halogen-substituted alkenyl group, a C3-C20 Branched halogen-substituted alkenyl groups, cycloalkyl groups having 3 to 20 carbon atoms, cycloalkenyl groups having 3 to 20 carbon atoms, halogen-substituted cycloalkyl groups having 3 to 20 carbon atoms, halogen-substituted cycloalkenyl groups having 3 to 20 carbon atoms , An aromatic hydrocarbon group having 6 to 24 carbon atoms, a halogen-substituted aromatic hydrocarbon group having 6 to 24 carbon atoms, a nitrogen atom-containing hydrocarbon group having 2 to 24 carbon atoms whose bond terminal is a carbon atom An oxygen atom-containing hydrocarbon group having 2 to 24 carbon atoms whose bond terminal is a carbon atom, a phosphorus-containing hydrocarbon group having 2 to 24 carbon atoms whose bond terminal is a carbon atom, or a silicon-containing carbon atom having 1 to 24 carbon atoms A hydrogen group, a plurality of R ¹ may be the same or different, and may be bonded to each other to form a ring, n is an integer of 1 to 3, and X is Si, N R ² and R ³ are each a linear alkyl group having 1 to 20 carbon atoms, a branched alkyl group having 3 to 20 carbon atoms, a vinyl group, or a linear alkenyl having 3 to 20 carbon atoms. Group or branched alkenyl group, linear halogen-substituted alkyl group having 1 to 20 carbon atoms, branched halogen-substituted alkyl group having 3 to 20 carbon atoms, linear halogen-substituted alkenyl group having 2 to 20 carbon atoms, 3 to 3 carbon atoms 20 branched halogen-substituted alkenyl groups, carbon number -20 cycloalkyl group, C3-C20 cycloalkenyl group, C3-C20 halogen-substituted cycloalkyl group, C3-C20 halogen-substituted cycloalkenyl group, C6-C24 aromatic carbonization A hydrogen group, a halogen-substituted aromatic hydrocarbon group having 6 to 24 carbon atoms, a nitrogen atom-containing hydrocarbon group having 2 to 24 carbon atoms in which the bond terminal is a carbon atom, and a C 2 to 24 carbon atom having a bond terminal in the carbon atom An oxygen atom-containing hydrocarbon group, a phosphorus-containing hydrocarbon group having 2 to 24 carbon atoms whose bond ends are carbon atoms, or a silicon-containing hydrocarbon group having 1 to 24 carbon atoms may be the same or different. , The nitrogen atom-containing hydrocarbon group having 2 to 24 carbon atoms in R ^{1 to} R ³ is ^one in which the bond terminal is a C═N group, and the oxygen atom-containing hydrocarbon group having 2 to 24 carbon atoms is a bond terminal Carbo What is group, a phosphorus-containing hydrocarbon group of carbon number 2 to 24 are excluded respectively those bond terminus is C = P group. Solid catalyst component for olefin polymerization containing a compound represented by R ¹ in the general formula (1) is a hydrogen atom, a halogen atom, a linear alkyl group having 1 to 12 carbon atoms, a branched alkyl group having 3 to 12 carbon atoms, a vinyl group, or a straight chain having 3 to 12 carbon atoms. Chain alkenyl group or branched alkenyl group, linear halogen-substituted alkyl group having 1 to 12 carbon atoms, branched halogen-substituted alkyl group having 3 to 12 carbon atoms, linear halogen-substituted alkenyl group having 2 to 12 carbon atoms, carbon Branched halogen-substituted alkenyl group having 3 to 12 carbon atoms, cycloalkyl group having 3 to 12 carbon atoms, cycloalkenyl group having 3 to 12 carbon atoms, halogen-substituted cycloalkyl group having 3 to 12 carbon atoms, halogen having 3 to 12 carbon atoms The solid catalyst component for olefin polymerization according to claim 1, which is a substituted cycloalkenyl group or an aromatic hydrocarbon group having 6 to 12 carbon atoms. R ² and R ³ in the general formula (1) are linear alkyl groups having 1 to 12 carbon atoms, branched alkyl groups having 3 to 12 carbon atoms, vinyl groups, and linear alkenyls having 3 to 12 carbon atoms. Group or branched alkenyl group, linear halogen-substituted alkyl group having 1 to 12 carbon atoms, branched halogen-substituted alkyl group having 3 to 12 carbon atoms, linear halogen-substituted alkenyl group having 2 to 12 carbon atoms, 3 to 3 carbon atoms 12 branched halogen-substituted alkenyl groups, cycloalkyl groups having 3 to 12 carbon atoms, cycloalkenyl groups having 3 to 12 carbon atoms, halogen-substituted cycloalkyl groups having 3 to 12 carbon atoms, and halogen-substituted cycloalkenyl groups having 3 to 12 carbon atoms The solid catalyst component for olefin polymerization according to claim 1 or 2, which is a group or an aromatic hydrocarbon group having 6 to 12 carbon atoms. (I) The solid catalyst component for olefin polymerization according to any one of claims 1 to 3,
(II) The following general formula (2); R ⁴ _p AlQ _3-p (2)
(In the formula, R ⁴ represents an alkyl group having 1 to 6 carbon atoms, and when there are a plurality thereof, they may be the same or different, Q represents a hydrogen atom, an alkoxy group having 1 to 6 carbon atoms, or a halogen atom; Is a real number of 0 <p ≦ 3.) And (III) an olefin polymerization catalyst characterized in that it is formed from an external electron donating compound. The external electron donating compound (III) is represented by the following general formula (3):
R ⁵ _q Si (OR ⁶ ) _4-q (3)
(In the formula, R ⁵ is an alkyl group having 1 to 12 carbon atoms, a vinyl group, an alkenyl group having 3 to 12 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms or a cycloalkenyl group, and an aromatic group having 6 to 15 carbon atoms. Either a hydrocarbon group or an aromatic hydrocarbon group having a substituent, which may be the same or different, R ⁶ is an alkyl group having 1 to 4 carbon atoms, a vinyl group, or an alkenyl group having 3 to 12 carbon atoms. , A cycloalkyl group having 3 to 6 carbon atoms, an aromatic hydrocarbon group having 6 to 12 carbon atoms, and an aromatic hydrocarbon group having 7 to 12 carbon atoms having a substituent, which may be the same or different. q is an integer of 0 ≦ q ≦ 3.) An organosilicon compound represented by the following general formula (4);
(R ⁷ R ⁸ N) _s SiR ⁹ _4-s (4)
Wherein R ⁷ and R ⁸ are a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, a vinyl group, an alkenyl group having 3 to 20 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms or a cycloalkenyl group, or carbon An aryl group having 6 to 20 carbon atoms, a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, a vinyl group, an alkenyl group having 3 to 20 carbon atoms, a cycloalkyl group or a cycloalkenyl group having 3 to 20 carbon atoms, or carbon R ⁹ represents an aryl group having a number of 6 to 20, which may be the same or different, and may be bonded to each other to form a ring, and R ⁹ is an alkyl group having 1 to 20 carbon atoms, a vinyl group, or a carbon number of 3 -12 alkenyl group, C1-C20 alkoxy group, vinyloxy group, C3-C20 alkenyloxy group, C3-C20 cycloalkyl group or cycloalkyloxy group, An aryl group or an aryloxy group having 6 to 20 carbon atoms, an aminosilane R ⁹ can be more than one, a plurality of R ⁹ is represented by which may be identical or different .s is an integer from 1 to 3.) 5. The olefin polymerization catalyst according to claim 4, wherein the catalyst is at least one selected from compounds or two or more.   The external electron donating compound (III) is phenyltrimethoxysilane, n-butyltrimethoxysilane, cyclopentyltrimethoxysilane, cyclohexyltrimethoxysilane, phenyltriethoxysilane, n-butyltriethoxysilane, cyclopentyltriethoxysilane. , Cyclohexyltriethoxysilane, t-butylmethyldimethoxysilane, t-butylethyldimethoxysilane, diisopropyldimethoxysilane, diisobutyldimethoxysilane, diisopentyldimethoxysilane, diphenyldimethoxysilane, dicyclopentyldimethoxysilane, cyclohexylmethyldimethoxysilane, cyclohexylcyclopentyl Dimethoxysilane, tetramethoxysilane, tetraethoxysilane, t-butylmethylbis ( Tilamino) silane, dicyclohexylbis (ethylamino) silane, dicyclopentylbis (ethylamino) silane, bis (perhydroisoquinolino) dimethoxysilane, diethylaminotrimethoxysilane, diethylaminotriethoxysilane, trimethylsilyltrimethoxysilane, or trimethylsilyltri 6. The olefin polymerization catalyst according to claim 5, which is ethoxysilane. The external electron donating compound (III) is represented by the following general formula (5):
R ¹⁰ OCH ₂ CR ¹¹ R ¹² CH ₂ OR ¹³ (5)
Wherein R ¹¹ and R ¹² are a hydrogen atom, a halogen atom, an alkyl group having 1 to 12 carbon atoms, a vinyl group, an alkenyl group having 3 to 12 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms or a cycloalkenyl group. , An aromatic hydrocarbon group having 6 to 12 carbon atoms or a halogen-substituted aromatic hydrocarbon group, an aromatic hydrocarbon group having 7 to 12 carbon atoms having a substituent, an alkylamino group having 1 to 12 carbon atoms, or the number of carbon atoms 2 to 12 dialkylamino groups which may be the same or different and may be bonded to each other to form a ring, and R ¹⁰ and R ¹³ are each an alkyl group having 1 to 12 carbon atoms, a vinyl group, or a carbon number. 3-12 alkenyl group, C3-C6 cycloalkyl group, C6-C12 aromatic hydrocarbon group or halogen-substituted aromatic hydrocarbon group, or C7 having a substituent 5. The catalyst for olefin polymerization according to claim 4, which is a diether compound represented by ˜12 aromatic hydrocarbon groups, which may be the same or different.   8. The olefin polymerization catalyst according to claim 7, wherein the diether compound is 2-isopropyl-2-isobutyl-1,3-dimethoxypropane or 9,9-bis (methoxymethyl) fluorene.   A method for producing an olefin polymer, wherein olefins are polymerized in the presence of the olefin polymerization catalyst according to any one of claims 4 to 8.

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