WO2024079203A1 - Système catalytique à base d'un complexe du fer et son utilisation pour la polymérisation de diènes conjugués - Google Patents
Système catalytique à base d'un complexe du fer et son utilisation pour la polymérisation de diènes conjugués Download PDFInfo
- Publication number
- WO2024079203A1 WO2024079203A1 PCT/EP2023/078226 EP2023078226W WO2024079203A1 WO 2024079203 A1 WO2024079203 A1 WO 2024079203A1 EP 2023078226 W EP2023078226 W EP 2023078226W WO 2024079203 A1 WO2024079203 A1 WO 2024079203A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- radical
- substituted
- formula
- catalytic system
- solvent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F136/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F136/02—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F136/04—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
- C08F136/06—Butadiene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F136/00—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
- C08F136/02—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
- C08F136/04—Homopolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated
- C08F136/08—Isoprene
Definitions
- the present invention relates to the use of an iron complex in conjugated diene polymerization processes.
- the present invention relates to a catalytic system based on an iron complex and its preparation process, as well as its use for the polymerization of conjugated dienes.
- neodymium is a rare earth with limited natural resources, more so than other metals used for catalytic polymerization.
- neodymium is also very widely used for the manufacture of permanent magnets, particularly in wind turbines, hard drives, electric motors for hybrid cars, etc. It has therefore become necessary to find economically viable alternatives to continue producing high quality polybutadiene on an industrial scale.
- US20140011971A1 describes the preparation of polyisoprene using a catalytic system based on an iron complex comprising a bidentate amino ligand.
- document CN112442092A describes iron complexes comprising a bidentate amino ligand and its use for the stereospecific polymerization of conjugated diene, in particular butadiene.
- a first object of the invention is the use of an iron complex of formula (I) Fe(N(R) 2 ) 2 (I) in which the symbols R, identical or different, represent a hydrogen atom , a linear or branched C1-C20 aliphatic radical, substituted or not, a C3-C20 cycloaliphatic radical, substituted or not, an aromatic C6-C20 radical, substituted or not, or a silyl radical of formula -Si(R ')3 in which the symbols R', identical or different, represent a hydrogen atom, a linear or branched C1-C20 aliphatic radical, substituted or not, a C3-C20 cycloaliphatic radical, substituted or not, or a C6-C20 aromatic radical, substituted or not, for the polymerization of conjugated dienes.
- a second object of the invention is a catalytic system comprising such an iron complex, a solvent, a cationizing agent and an alkylating agent.
- a third object of the invention is a process for synthesizing a diene polymer using such a catalytic system.
- Cx-Cy for a hydrocarbon radical means that said radical comprises x to y carbon atoms.
- aliphatic radical designates a hydrocarbon radical, acyclic or cyclic, saturated or unsaturated, excluding aromatic radicals, preferably comprising here 1 to 20 carbon atoms.
- the aliphatic radical can be linear or branched. Examples of linear or branched aliphatic radicals include C1-C20 alkyl groups, C2-C20 alkenyl groups and C2-C20 alkynyl groups.
- alkyl designates a monovalent, linear or branched saturated hydrocarbon radical comprising from 1 to 20 carbon atoms, preferably from 1 to 10 carbon atoms, for example the methyl, ethyl radical, the propyl, butyl, pentyl, hexyl radicals, heptyls, octyls, nonyls and decyls.
- alkenyl designates a monovalent hydrocarbon radical comprising at least one double bond, said radical being linear or branched and preferably comprising here from 2 to 20 carbon atoms, preferably from 2 to 6 carbon atoms, for example the ethenyl radical, vinyl, butenyl or 2-propen-l-yl (allyl).
- alkynyl designates a monovalent hydrocarbon radical comprising at least one triple bond, said radical being linear or branched and preferably comprising here from 2 to 20 carbon atoms, preferably from 2 to 6 carbon atoms, for example the ethynyl radical, propynyl and butynyl.
- Cycloaliphatic radical designates a mono- or polycyclic aliphatic radical preferably comprising here from 3 to 20 atoms, saturated or unsaturated.
- Examples of cycloaliphatic radicals include C3-C20 cycloalkyl groups and C3-C20 cycloalkenyl groups.
- Cycloalkyl designates a monocyclic saturated hydrocarbon radical preferably comprising here from 3 to 20 carbon atoms, preferably from 3 to 10 carbon atoms.
- Examples of cycloalkyl radicals include cyclopentyl, cyclohexyl and cycloheptyl.
- “Cycloalkenyl” designates a monocyclic hydrocarbon radical comprising at least one double bond and preferably comprising here from 3 to 20 carbon atoms, preferably from 3 to 10 carbon atoms.
- aromatic radical designates a mono- or polycyclic aromatic radical preferably comprising here from 5 to 20 members.
- aromatic radicals include aryl groups.
- aryl designates a mono- or polycyclic aromatic hydrocarbon radical preferably comprising here from 6 to 20 carbon atoms, preferably from 6 to 10 carbon atoms.
- aryl radicals include the phenyl radical and the naphthyl radical.
- (halo) preceding a radical means that it includes or does not include a halogen atom.
- the (halo)aryl radical includes the aryl radical and the halogenated aryl radical.
- halogen atom we mean an atom chosen from chlorine, bromine, iodine and fluorine.
- a first object of the invention is the use of an iron complex for the polymerization of conjugated dienes.
- the iron complex useful for the purposes of the present invention is a compound of formula (I): Fe(N(R) 2 ) 2 (I) in which the symbols R, identical or different, represent a hydrogen atom, a linear or branched aliphatic radical in C1-C20, substituted or not, a cycloaliphatic radical in C3-C20, substituted or not, an aromatic radical in C6-C20, substituted or not, or a silyl radical, substituted or not of formula -Si (R')3 in which the symbols R', identical or different, represent a hydrogen atom, a linear or branched C1-C20 aliphatic radical, substituted or not, a C3-C20 cycloaliphatic radical, substituted or not, or an aromatic C6-C20 radical, substituted or not.
- Such metal iron compounds are used in particular in WO 2019008279 for their catalytic activity in the hydrosilylation and/or dehydrogenating silylation of organopolysiloxane compounds with a compound comprising at least one hydrogenosilyl function.
- the aliphatic, cycloaliphatic and aromatic radicals defining R and R' may be substituted by one or more substituents independently chosen from halogen atoms, C3-C6 (halo)cycloalkyls, C6-C14 (halo)aryls.
- the cycloaliphatic radical and the aromatic radical defining R and R' may additionally or alternatively be substituted by one or more substituents independently chosen from (halo)C1-C10 alkyls, (halo)aralkyls in C7-C12, (halo) )C2-C10 alkenyls and C2-C10 (halo)alkynyls.
- each R represents a silyl radical of formula -Si(R')3 in which each R' independently represents a hydrogen atom or a C1-C20 alkyl radical, preferably a C1-C10 alkyl radical, for example a methyl, ethyl, n-propyl, iso-propyl, n-butyl, sec-butyl, iso-butyl or tert-butyl radical .
- each R represents a trialkylsilyl radical of formula -Si(R')3 in which each R' represents a C1-C4 alkyl radical, for example a methyl radical .
- the iron complex of formula (I) is a bis[N,N-bis(trial kylsilyl)amide] of iron (II), in particular bis[N,N-bis(trimethylsilyl) )iron (II) amide].
- the iron complex of formula (I) can be prepared in a known manner according to a simple process for reacting an iron halide, for example iron chloride or bromide, in the presence of THF with a lithium amide of formula Li- N(SiR3)2.
- an iron halide for example iron chloride or bromide
- a lithium amide of formula Li- N(SiR3)2 Such a method is for example described in WO2013043912A2, or in the article Andersen, R. A.; Faegri, K.; Green, J.C.; Haaland, A.; Lappert, M.F.; Leung, W.P.; Rypdal, K. Inorg. Chem. 1988, Tl (10), 1782-1786, regarding the synthesis of Fe N SiMeahh-
- the iron complex of formula (I) is used for the polymerization of conjugated dienes, in particular 1,3-dienes, preferably butadiene, isoprene or mixtures thereof.
- the iron complex of formula (I) is then advantageously used within a catalytic system.
- the present invention also relates to such a catalytic system which comprises: - an iron complex of formula (I) Fe(N(R) 2 ) 2 (I)
- the solvent of the catalytic system is chosen so that all other components of the catalytic system are soluble in said solvent.
- the solvent of the catalytic system is chosen:
- the solvent of the catalytic system is an aliphatic apolar solvent, an aromatic apolar solvent or a mixture of an aliphatic apolar solvent and an aromatic apolar solvent.
- the solvent of the catalytic system can be cyclohexane, methylcyclohexane, toluene, benzene and their mixtures.
- the solvent of the catalytic system is aromatic, more preferably then the solvent is toluene.
- the stereospecificity of the catalytic system favors the insertion in the 1,4-cis position of 1,3-diene monomers and therefore the formation of predominantly cis poly-1,3-dienes.
- the solvent of the catalytic system is a polar aprotic solvent chosen from ethers, amines and their mixtures, preferably then the solvent of the catalytic system is an ether, more preferably a derivative of tetrahydrofuran ( THF) for example methyltetrahydrofuran.
- THF tetrahydrofuran
- the stereospecificity of the catalytic system favors the insertion in the 1,4-trans position of 1,3-diene monomers and therefore the formation of predominantly trans poly-1,3-dienes.
- the catalytic system according to the invention also comprises an alkylating agent.
- the alkylating agent may be any alkylating agent commonly used for the polymerization of conjugated diene monomers.
- the alkylating agent may be an organometallic alkylating agent of metals from groups 1, 2, 12 and 13 of the periodic table according to IUPAC (December 2018).
- alkylating agents include alkylating agents belonging to the group consisting of magnesium alkyls, lithium alkyls, zinc alkyls, aluminum alkyls, Grignard reagents and mixtures of these constituents.
- Alkylating agents belonging to the alkylaluminum group can be represented by the following formula (II): (Ra) m -AI (ORb) n -H P -X q - (II) in which: - Ra and Rb are identical or different and each represent a hydrocarbon group of 1 to 15 carbon atoms, preferably a hydrocarbon group of 1 to 4 carbon atoms;
- the aluminum alkyls of formula (II) can be compounds represented by the following formulas: i) (Ra) m -AI(ORb) 3.m - in which Ra and Rb are identical or different and each represent a group hydrocarbon of 1 to 15 carbon atoms, preferably a hydrocarbon group of 1 to 4 carbon atoms; and m' is preferably a number satisfying the condition of 1.5 sm' s 3; ii) (Ra)m-AIX 3.m- in which Ra is a hydrocarbon group of 1 to 15 carbon atoms, preferably a hydrocarbon group of 1 to 4 carbon atoms; X is a halogen atom; and m' is preferably a number satisfying the condition of 0 ⁇ m' ⁇ 3; iii) (Ra)mAIH 3 .m- in which Ra is a hydrocarbon group of 1 to 15 carbon atoms, preferably a hydrocarbon group of 1 to 4 carbon atoms; and m' is preferably a number of
- alkylaluminum compounds include:
- tri-n-alkylaluminum such as trimethylaluminum, triethylaluminum, tri-n-butylaluminum, tripropylaluminum, tripentylaluminum, trihexylaluminum, trioctylaluminum and tridecylaluminum;
- trialkylaluminum such as triisopropylaluminum, triisobutylaluminum, tri-sec-butylaluminum, tri-tert-butylaluminum, tri-2-methylbutylaluminum, tri-3-methylbutylaluminum, tri-neopentylaluminum, tri-2-methylpentylaluminum, tri-3 - methylpentylaluminium, tri-4-methylpentylaluminium, tri-2-methylhexylaluminium, tri-3-methylhexylaluminium and tri-2-ethylhexylaluminium;
- tricycloalkylaluminum such as tricyclohexylaluminum and tricyclooctylaluminum
- triarylaluminum such as triphenylaluminium and tritolylaluminum
- - trialkenylaluminium represented by the formula (i-C4H9)aAlb(C5H10)c (where a, b and c are positive numbers and c ⁇ 2X), such as isoprenylaluminium;
- alkylaluminum alkoxides such as isobutylaluminum methoxide, isobutylaluminum ethoxide and isobutylaluminum isopropoxide;
- dialkylaluminum alkoxides such as dimethylaluminum methoxide, diethylaluminum ethoxide and dibutylaluminum butoxide;
- alkylaluminum sesquialkoxides such as ethylaluminum sesquiethoxide and butylaluminum sesquibutoxide
- - partially alkoxylated alkylaluminums having an average composition represented by Ra2.5AI(ORb)0.5; also called aluminoxanes, for example methylaluminoxane (MAO), ethylaluminoxane, isobutylaluminoxane, triisobutylaluminoxane;
- MAO methylaluminoxane
- ethylaluminoxane isobutylaluminoxane
- triisobutylaluminoxane triisobutylaluminoxane
- dialkylaluminum aryloxides such as diethylaluminum phenoxide, diethylaluminum (2,6-di-t-butyl-4-methylphenoxide), ethylaluminumbis (2,6-di-t-butyl-4-methylphenoxide), diisobutylaluminum (2,6-di-t-butyl-4-methylphenoxide) and isobutylaluminum bis (2,6-di-t-butyl-4-methylphenoxide);
- dialkylaluminum halides such as dimethylaluminum chloride, diethylaluminum chloride, dibutylaluminum chloride, diethylaluminum bromide and diisobutylaluminum chloride;
- alkylaluminum sesquihalides such as ethylaluminum sesquichloride, butylaluminum sesquichloride and ethylaluminum sesquibromide;
- alkylaluminums such as ethylaluminum dichloride, propylaluminum dichloride and butylaluminum dibromide;
- dialkylaluminum hydrides such as diethylaluminum hydride and diisobutylaluminum hydride
- alkylaluminum dihydrides such as ethylaluminum dihydride and propylaluminum dihydride
- alkylaluminums such as ethylaluminum ethoxychloride, butylaluminum butoxychloride and ethylaluminum ethoxybromide.
- Alkylating agents belonging to the group of magnesium alkyls, zinc alkyls or Cd alkyls can be represented by the following formula: RaRbM, in which Ra and Rb can be identical or different and each represent a group hydrocarbon of 1 to 15 carbon atoms, preferably a hydrocarbon group of 1 to 4 carbon atoms; and M is Mg, Zn or Cd.
- the alkylating agent is an alkylaluminum of formula (II) as defined above.
- alkylaluminum include:
- aluminoxanes such as methylaluminoxane (MAO), ethylaluminoxane, isobutylaluminoxane, triisobutylaluminoxane;
- MAO methylaluminoxane
- ethylaluminoxane ethylaluminoxane
- isobutylaluminoxane triisobutylaluminoxane
- tri-alkylaluminum of formula AI(Cl-C10-alkyl)3 such as trimethylaluminum, triethylaluminum, tri-n-propylaluminum, tri-isopropylaluminum, tri-n-butylaluminum, tri-isobutylaluminum (TiBA), tri-t -butylaluminum, tri-n-pentylaluminium, tri-neopentylaluminum, tri-n-hexyl-aluminium, tri-cyclohexylaluminium, tri-n-octylaluminum, preferably tri-isobutylaluminuim;
- - dialkylaluminum hydrides of formula (AI(Cl-C10-alkyl)2H), such as diethylaluminum hydride (HDiBA), diisopropylaluminum hydride, di-n-propylaluminum hydride, di-n-propylaluminum hydride, di-isobutylaluminum, di-n-butylaluminum hydride, di-n-hydride octylaluminum, preferably diisobutylaluminum hydride;
- DEBA diethylaluminum hydride
- diisopropylaluminum hydride di-n-propylaluminum hydride
- di-n-propylaluminum hydride di-n-propylaluminum hydride
- di-isobutylaluminum di-n-butylaluminum hydride
- di-n-hydride octylaluminum
- CDEA diethylaluminum chloride
- the alkylating agent is a tri-alkylaluminum of formula AI(C1-C10-alkyl)3, such as trimethylaluminum, triethylaluminum, tri-n-propylaluminum, tri-isopropylaluminum, tri-n-butylaluminum , tri-isobutylaluminum (TiBA), tri-t-butylaluminum, tri-n-pentylaluminum, tri-neopentylaluminum, tri-n-hexyl-aluminum, tri-cyclohexylaluminum, tri-n-octylaluminum, preferably tri-isobutylaluminuim.
- formula AI(C1-C10-alkyl)3 such as trimethylaluminum, triethylaluminum, tri-n-propylaluminum, tri-isopropylaluminum, tri-n-butylaluminum
- the alkylating agent is a dialkylaluminum hydride of formula (AI(Cl-C10-alkyl)2H), such as diethylaluminum hydride, diisopropylaluminum hydride, di-n hydride -propylaluminum, di-isobutylaluminum hydride, di-n-butylaluminum hydride, di-n-octylaluminum hydride, preferably diisobutylaluminum hydride.
- DI(Cl-C10-alkyl)2H dialkylaluminum hydride of formula (AI(Cl-C10-alkyl)2H)
- alkylating agents mentioned above may be used alone or in a mixture of two or more.
- the molar ratio (alkylating agent)/(iron complex) is preferably greater than or equal to 5/1.
- the catalytic system according to the invention also comprises a cationizing agent.
- the cationizing agent can be any cationizing agent commonly used for the polymerization of olefins.
- the co-catalyst can be a cationizing agent of formula (III) following: [Q] + [B(Ri)4]' (III), in which
- [QJ + is a proton, a carbonium cation or one of its substituted derivatives (primary, secondary or tertiary carbocation), an ammonium cation or one of its substituted derivatives (primary, secondary, tertiary, quaternary ammonium), an oxonium cation or a substituted derivative thereof, a phosphonium cation, a cycloheptyltrienyl cation, a metallocenium cation of a transition metal such as a ferrocenium cation, or the like;
- - B is the symbol for boron
- each Ri represents independently of one another a linear or branched aliphatic radical in C1-C20, substituted or not, a cycloaliphatic radical in C3-C20, substituted or not, or an aromatic radical in C6-C20, substituted or No.
- the linear or branched aliphatic radical, the cycloaliphatic radical and the C6-C20 aromatic radical may be substituted by one or more substituents independently chosen from halogen atoms, C1-C5 alkyl groups or perfluoroalkyl groups.
- Ri represents an aryl group which can be substituted by one or more substituents independently chosen from halogen atoms, C1-C5 alkyl groups or C1-C5 perfluoroalkyl groups.
- Ri independently represents a phenyl, tolyl, mesityl, xylyl group, substituted or not, more particularly a pentafluorophenyl group.
- the four Ri are identical. According to certain embodiments, the four Ri are pentafluorophenyl groups.
- Examples of the [B(Ri)4] anion include alkyltris(pentafluorophenyl)borate, tetrakis(pentafluorophenyl)borate, and tetrakis[3,5-bis(trifluoromethyl)phenyl]borate.
- carbonium cations include, but are not limited to, tri-substituted carbonium cations, such as triphenylcarbonium cation, tri(methylphenyl) carbonium cation and tri(dimethylphenyl) carbonium cation.
- ammonium cations include, but are not limited to, primary, secondary and tertiary ammonium cations.
- secondary ammonium cations include dialkylammonium and diarylammonium, for example dimethylammonium, diethylammonium, di(isopropyl)ammonium cation, dicyclohexylammonium cation and diphenylammonium cation.
- ternary ammonium cations include trialkyl ammonium cation, for example trimethylammonium cation, triethylammonium cation, tripropylammonium cation and tributylammonium cation (particularly tri(n-butyl)ammonium).
- ammonium cations also include anilinium cations and their derivatives, such as anilinium cation, N-alkylanilinium and N, N-dialkylanilinium cations, such as N-methylanilinium cation, N,N-dimethylanilinium cation, N, N-diethylanilinium, the N,N-2,4,6-pentamethylanilinium cation, the p-bromo-N,N-dimethylanilinium cation and the p-nitro-N,N-dimethylanilinium cation.
- anilinium cations and their derivatives such as anilinium cation, N-alkylanilinium and N, N-dialkylanilinium cations, such as N-methylanilinium cation, N,N-dimethylanilinium cation, N, N-diethylanilinium, the N,N-2,4,6-pentamethylanilinium cation, the
- Examples of phosphonium cations include, but are not limited to, triarylphosphonium cations, such as triphenylphosphonium cation, tri(methylphenyl) phosphonium cation and tri(dimethylphenyl) phosphonium cation.
- the cation [QJ+ is a carbonium cation or an ammonium cation as described above, preferably [QJ+ is the triphenylcarbonium cation, the N, N-dimethylanilinium cation or the N, N-diethylanilinium cation.
- the cationizing agent can therefore be a trialkyl-substituted ammonium salt, an N, N-dialkylanilinium salt, a dialkylammonium salt or a tri-substituted carbonium salt.
- Examples of a cationizing agent of formula (III) include triethylammoniumtetra(phenyl)borate, tripropylammoniumtetra(phenyl)borate, tri(n-butyl)ammoniumtetra(phenyl)borate, trimethylammoniumtetra(p-tolyl)borate, trimethylammoniumtetra (o-tolyl))borate, tri(n-butyl)ammonium tetrakis(pentafluorophenyl)borate, tripropylammoniumtetrakis(o, p-dimethylphenyl)borate, tri(n-butyl)ammoniumtetrakis(m,m-dimethylphenyl)borate, tri(n-butyl)ammoniumtetrakis(p-trifluoromethylphenyl)borate, tri(n-butyl)ammoniumtetrakis(3,5- ditri
- the cationizing agent is preferably a trialkyl-substituted ammonium salt, an N, N-dialkylanilium salt, a dialkylammonium salt or a tri-substituted carbonium salt, preferably the cationizing agent is dimethylanilinium tetrakis( pentafluorophenyl)borate or trityl tetrakis(pentafluorophenyl)borate.
- the cationizing agents mentioned above can be used alone or in a mixture of two or more.
- the molar ratio (cationizing agent)/(iron complex) is preferably less than or equal to 2/1; more preferably this molar ratio is included in a value range ranging from 1/1 to 2/1.
- the constituents of the catalytic system can be pre-mixed before being brought into contact with the monomer(s) to be polymerized.
- the constituents of the catalytic system are mixed by introducing the iron complex and the cationizing agent into the solvent of the catalytic system. This mixture is then brought into contact with the alkylating agent for a time of between 0 and 120 minutes, at a temperature ranging from 10°C to 60°C, generally at room temperature (around 23°C), so as to to obtain a pre-mixed catalyst.
- the pre-mixed catalyst thus obtained is then brought into contact with the monomer(s) to be polymerized possibly in solution in the polymerization solvent.
- the alkylating agent can first be mixed with the monomers to be polymerized.
- the iron complex of formula (I) pre-mixed with the cationizing agent in the solvent of the catalytic system for a time of between 0 and 120 minutes, at a temperature ranging from 10°C to 60°C, generally at room temperature (around 23°C), is then added to carry out the polymerization reaction.
- a solution of the iron complex of formula (I) and a solution of the cationizing agent can be added at the same time or successively to the monomers to be polymerized.
- a solution of the alkylating agent is added to the medium.
- the solvents of the solutions of each component of the catalytic system may be identical or different and chosen from the solvents of the catalytic system defined above.
- the catalyst system of the present invention can be used in conjugated diene polymerization processes.
- the monomers to be polymerized can then be brought into contact with the catalytic system according to the invention.
- the monomers to be polymerized are chosen from the group of monomers consisting of conjugated dienes.
- the conjugated dienes used as monomers to be polymerized are preferably 1,3-dienes having from 4 to 15 carbon atoms.
- the use of the catalytic system according to the invention makes it possible to synthesize polymers of stereospecific 1,3-dienes, favoring the 1,4-cis or 1,4-trans insertion of the monomers depending on the nature of the solvent of the catalytic system.
- 1,3-diene monomers suitable in particular are 1,3-dienes having from 4 to 12 carbon atoms, such as for example butadiene, isoprene, 2,3-di(alkyl C1 to C5 )-1,3-butadiene such as for example 2,3-dimethyl-1,3-butadiene, 2,3-diethyl-1,3-butadiene, 2-methyl-3-ethyl-1,3-butadiene, 2-methyl-3-isopropyl-1,3-butadiene, phenyl-1,3-butadiene, 1,3-pentadiene, etc.
- 1,3-dienes having from 4 to 12 carbon atoms such as for example butadiene, isoprene, 2,3-di(alkyl C1 to C5 )-1,3-butadiene such as for example 2,3-dimethyl-1,3-butadiene, 2,3-diethyl-1,3-butadiene, 2-methyl-3-e
- linear terpenes are also suitable, such as in particular linear monoterpenes (C10H16), such as myrcene, linear sesquiterpenes (C15H24), such as farnesene, etc.
- C10H16 linear monoterpenes
- myrcene myrcene
- linear sesquiterpenes C15H24
- the conjugated diene monomer to be polymerized is butadiene or isoprene.
- the polymerization step of the process is a step of homopolymerization of a conjugated diene monomer in the presence of a catalytic system as described above.
- the polymerization step of the process is a step of copolymerization of at least one conjugated diene monomer in the presence of a catalytic system as described above.
- the conjugated diene monomer is then copolymerized with at least one other monomer.
- a 1,3-diene monomer having 4 to 15 carbon atoms as defined above, different from the first 1,3-diene monomer is suitable for example.
- the polymerization step can be carried out in a known manner, continuously or discontinuously, in mass or in solution, generally and in a known manner at a temperature preferably at least 40°C and preferably at most 120°C. °C, more preferably at most
- organic solvent is meant according to the invention an inert hydrocarbon solvent which can be for example an aliphatic or alicyclic hydrocarbon such as pentane, hexane, heptane, isooctane, cyclohexane, methylcyclohexane, or an aromatic hydrocarbon.
- the catalytic system as described above is used for the polymerization in a reaction medium comprising the monomers to be polymerized and, where appropriate, the polymerization solvent.
- the polymerization step of the process is preceded by a step of neutralizing the impurities of the reaction medium.
- this step can be carried out by adding a predetermined quantity of an organic aluminum compound of formula (II), independently of the introduction of the catalytic system used for the polymerization reaction.
- This organic aluminum compound may be identical to or different from the organic aluminum compound used as the alkylating agent of the catalytic system.
- this organic aluminum compound makes it possible to overcome the impurities present in the polymerization medium coming from the monomers or the polymerization solvent, and not to penalize the activity of the catalytic system, so to minimize the dispersion of the characteristics of the elastomer obtained, in particular molecular masses.
- TBAr F trityl tetrakis(pentafluorophenyl)borate
- ABAr F tetrakis(pentafluorophenyl)borate N,N-dimethylanilinium
- TiBA tri-isobutylaluminum
- DiBAH di-isobutylaluminum hydride
- the polymerization yield (noted “q pol (%)) is calculated via the ratio between the mass of the polymer isolated at the end of the reaction and the mass of monomers introduced into the reactor.
- microstructure of the elastomers is characterized by the high-resolution NMR spectroscopy technique.
- High-resolution NMR spectroscopy of the polymers was carried out on a Bruker 400 Avance III spectrometer operating at 400 MHz equipped with a 5 mm BBFO probe for the proton and on a Bruker 400 Avance II spectrometer operating at 400 MHz equipped with a PSEX probe. 13C 10 mm for carbon.
- the acquisitions were made in a mixture of tetrachlorethylene (TCE) and deuterated chloroform (CDCU) (2/1 v/v) at 298 K or in chloroform.
- TCE tetrachlorethylene
- CDCU deuterated chloroform
- the samples were analyzed at a concentration of 1 mass% for proton and 5 mass% for carbon.
- the chemical shifts are given in ppm, relative to the proton signal of deuterated chloroform at 7.26 ppm and the carbon signal of TCE fixed at 120.65 ppm.
- the SEC (“Size Exclusion Chromatography”) technique makes it possible to separate macromolecules in solution according to their size through columns filled with a porous gel.
- the macromolecules are separated according to their hydrodynamic volume, the largest being eluted first.
- the size exclusion chromatography analyzes were carried out with a Viscotek apparatus (Malvern Instruments) equipped with 3 columns (SDVB, 5 pm, 300 x 7.5 mm from Polymer Standard Service), a guard column and 3 detectors (differential refractometer and viscometer, and light diffusion).
- Viscotek apparatus Malvern Instruments
- 3 columns SDVB, 5 pm, 300 x 7.5 mm from Polymer Standard Service
- 3 detectors Differential refractometer and viscometer, and light diffusion.
- 1 mL of a solution of the sample with a concentration of 5 mg mL-1 in THF was filtered through a 0.45 pm PTFE membrane.
- 100 ⁇ L of this solution was eluted in THF using a flow rate of 0.8 mL min-1 at a temperature of 35 °C.
- OmniSEC software was used for data acquisition and analysis.
- the molar masses in number (Mn) and mass (Mw) of the polymers as well as their dispersity (D) were calculated using a calibration curve from standard polystyrenes (Mp: 1,306 to 2,520,000 g mol-1 ) from Polymer Standard Service (Mainz).
- the iron bis(trimethylsilyl)amide of formula Fe N SiMeahh is synthesized according to the procedure described by Andersen, RA; Faegri, K.; Green, JC; Haaland, A.; Lappert, M.F.; Leung, W.
- the iron (II) bis[N,N-bis(trimethylsilyl)amide] stored in the glove box is weighed (40 mg, 0.108 mmol) in a Schlenk.
- the solution of iron complex and cationizing agent, pre-activated after 2 hours of stirring, is introduced into the reactor. Once the catalyst is introduced, polymerization lasts 1 to 4 hours at 60°C.
- reaction medium is precipitated in a solution of diBHT in methanol.
- the polymer is then dried and stored at 4°C.
- Cationizing agent [CPha] [B(CsF 5 )4] (TBAr F ) or [HNPhMezjtB CgFsh] (ABAr F );
- reaction medium is precipitated in a solution of diBHT in methanol.
- the polymer is then dried and stored at 4°C.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202380072612.9A CN120112566A (zh) | 2022-10-14 | 2023-10-11 | 基于铁配合物的催化体系及其在共轭二烯的聚合中的用途 |
| EP23789904.2A EP4602080A1 (fr) | 2022-10-14 | 2023-10-11 | Système catalytique à base d'un complexe du fer et son utilisation pour la polymérisation de diènes conjugués |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FRFR2210581 | 2022-10-14 | ||
| FR2210581A FR3140882B1 (fr) | 2022-10-14 | 2022-10-14 | Système catalytique à base d'un complexe du fer et son utilisation pour la polymérisation de diènes conjugués |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024079203A1 true WO2024079203A1 (fr) | 2024-04-18 |
Family
ID=85121969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2023/078226 Ceased WO2024079203A1 (fr) | 2022-10-14 | 2023-10-11 | Système catalytique à base d'un complexe du fer et son utilisation pour la polymérisation de diènes conjugués |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP4602080A1 (fr) |
| CN (1) | CN120112566A (fr) |
| FR (1) | FR3140882B1 (fr) |
| WO (1) | WO2024079203A1 (fr) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102532378A (zh) * | 2012-02-20 | 2012-07-04 | 中国科学院长春应用化学研究所 | 用于制备1,2-聚丁二烯的催化剂组合物及1,2-聚丁二烯的制备方法 |
| WO2013043912A2 (fr) | 2011-09-20 | 2013-03-28 | Dow Corning Corporation | Catalyseurs d'hydrosilylation contenant du fer et compositions contenant les catalyseurs |
| US20140011971A1 (en) | 2011-02-08 | 2014-01-09 | President And Fellows Of Harvard College | Iron complexes and methods for polymerization |
| WO2019008279A1 (fr) | 2017-07-05 | 2019-01-10 | Elkem Silicones France Sas | Compose du fer utile comme catalyseur d'hydrosilylation, de silylation déshydrogenante et de réticulation de compositions silicones |
| CN112442092A (zh) | 2020-11-24 | 2021-03-05 | 中国科学院青岛生物能源与过程研究所 | 一种6-甲氧基吡啶亚胺铁配合物及其制备方法和其在制备高顺式聚共轭二烯中的应用 |
-
2022
- 2022-10-14 FR FR2210581A patent/FR3140882B1/fr active Active
-
2023
- 2023-10-11 EP EP23789904.2A patent/EP4602080A1/fr active Pending
- 2023-10-11 CN CN202380072612.9A patent/CN120112566A/zh active Pending
- 2023-10-11 WO PCT/EP2023/078226 patent/WO2024079203A1/fr not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140011971A1 (en) | 2011-02-08 | 2014-01-09 | President And Fellows Of Harvard College | Iron complexes and methods for polymerization |
| WO2013043912A2 (fr) | 2011-09-20 | 2013-03-28 | Dow Corning Corporation | Catalyseurs d'hydrosilylation contenant du fer et compositions contenant les catalyseurs |
| CN102532378A (zh) * | 2012-02-20 | 2012-07-04 | 中国科学院长春应用化学研究所 | 用于制备1,2-聚丁二烯的催化剂组合物及1,2-聚丁二烯的制备方法 |
| WO2019008279A1 (fr) | 2017-07-05 | 2019-01-10 | Elkem Silicones France Sas | Compose du fer utile comme catalyseur d'hydrosilylation, de silylation déshydrogenante et de réticulation de compositions silicones |
| CN112442092A (zh) | 2020-11-24 | 2021-03-05 | 中国科学院青岛生物能源与过程研究所 | 一种6-甲氧基吡啶亚胺铁配合物及其制备方法和其在制备高顺式聚共轭二烯中的应用 |
Non-Patent Citations (6)
| Title |
|---|
| ANDERSEN, R. A.; FAEGRI, K.; GREEN, J. C.; HAALAND, A.; LAPPERT, M. F.; LEUNG, W.,P.; RYPDAL, K, INORG. CHEM, vol. 27, no. 10, 1988, pages 1782 - 1786 |
| ANDERSEN, R. A.; FAEGRI, K.; GREEN, J. C.HAALAND, A.,LAPPERT, M. F.; LEUNG, W. P.; RYPDAL, K. INORG. CHEM, vol. 27, no. 10, 1988, pages 1782 - 1786 |
| AVENT A G ET AL: "SYNTHESIS, STRUCTURES, CHARACTERIZATION, DYNAMIC BEHAVIOR, AND REACTIONS OF NOVEL LATE TRANSITION METAL(II) 1-AZAALLYLS", ORGANOMETALLICS, AMERICAN CHEMICAL SOCIETY, vol. 23, no. 11, 24 May 2004 (2004-05-24), pages 2591 - 2600, XP001199990, ISSN: 0276-7333, DOI: 10.1021/OM0498955 * |
| DATABASE WPI Week 201266, Derwent World Patents Index; AN 2012-K99714 * |
| SIDDIQUI SHEEMA ET AL: "Iron-Based Catalyst for Borylation of Unactivated Alkyl Halides without Using Highly Basic Organometallic Reagents", THE JOURNAL OF ORGANIC CHEMISTRY, vol. 86, no. 2, 15 January 2021 (2021-01-15), pages 1948 - 1954, XP093045329, ISSN: 0022-3263, DOI: 10.1021/acs.joc.0c02364 * |
| XIAOJIAN LI ET AL: "Isoprene Polymerization on Iron Nanoparticles Confined in Carbon Nanotubes", CHEMISTRY - A EUROPEAN JOURNAL, JOHN WILEY & SONS, INC, DE, vol. 21, no. 48, 16 October 2015 (2015-10-16), pages 17437 - 17444, XP071877732, ISSN: 0947-6539, DOI: 10.1002/CHEM.201501165 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP4602080A1 (fr) | 2025-08-20 |
| FR3140882B1 (fr) | 2024-10-04 |
| FR3140882A1 (fr) | 2024-04-19 |
| CN120112566A (zh) | 2025-06-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2424902B1 (fr) | Systèmes catalytiques à base d'un complexe de terres rares pour la polymérisation stéréospécifique des diènes conjugués. | |
| EP1509557B1 (fr) | Systeme catalytique pour preparer des polybutadienes et procede de preparation | |
| FR2893028A1 (fr) | Complexe metallocene borohydrure d'un lanthanide, systeme catalytique l'incorporant, procede de polymerisation l'utilisant et copolymere ethylene/butadiene obtenu par ce procede | |
| EP1957506A2 (fr) | Complexe metallocene borohydrure d un lanthanide, systeme catalytique l incorporant, procede de polymerisation l utilisant et copolymere ethylene/butadiene obtenu par ce procede | |
| FR3044241A1 (fr) | Systeme catalytique comprenant un metallocene de terre rare | |
| WO2013092895A1 (fr) | Activation de systèmes catalytiques pour la polymérisation stéréospécifique des diènes | |
| FR3108610A1 (fr) | Complexe organométallique d’yttrium cationique | |
| WO2024079203A1 (fr) | Système catalytique à base d'un complexe du fer et son utilisation pour la polymérisation de diènes conjugués | |
| EP4077418A1 (fr) | Systeme catalytique a base d'un metallocene et d'un diorganomagnesien | |
| EP4077419B1 (fr) | Compose diorganomagnesien pour systeme catalytique | |
| KR20250174884A (ko) | 철 착체를 기반으로 하는 촉매 시스템 및 공액 디엔을 중합하기 위한 이의 용도 | |
| EP4352116A1 (fr) | Système catalytique pour la polymérisation stéréospécifique de diènes et leur utilisation en procédé de synthèse de polymères diéniques | |
| FR3108609A1 (fr) | Synthese de polymeres d’olefines | |
| FR3108611A1 (fr) | Synthese de polymeres d’olefines | |
| JP5884333B2 (ja) | イットリウム化合物およびそれを用いた共役ジエン重合触媒 | |
| FR3108612A1 (fr) | Complexe organométallique d’yttrium cationique | |
| FR3104584A1 (fr) | Composé diorganomagnésien asymétrique | |
| WO2025196208A1 (fr) | Système catalytique comprenant un métallocène pour la synthèse de polyéthylène et de copolymère d'éthylène et de 1,3-diène | |
| EP4536721A1 (fr) | Procédé de synthèse de polyéthylènes ou de copolymères d'éthylène et de 1,3-diène portant une fonction cétone terminale | |
| FR2893030A1 (fr) | Copolymere ethylene/butadiene | |
| WO2025262050A1 (fr) | Fonctionnalisation vinylidène en extrémité de chaîne des polyéthylènes et des copolymères contenant des unités éthylène et des unités d'un 1,3-diène | |
| EP4352115A1 (fr) | Système catalytique préformé pour la polymérisation stéréospécifique de diènes et leur utilisation en procédé de synthèse de polymères diéniques | |
| WO2023237380A1 (fr) | Polyéthylènes ou copolymères d'éthylène et de 1,3-diène couples et leur procédé de préparation | |
| WO2025257014A1 (fr) | Système catalytique pour la polymérisation stéréospécifique de diènes et leur utilisation en procédé de synthèse de polymères diéniques | |
| JP5604936B2 (ja) | イットリウム化合物およびそれを用いた共役ジエン重合触媒 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 23789904 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 202380072612.9 Country of ref document: CN |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2023789904 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| ENP | Entry into the national phase |
Ref document number: 2023789904 Country of ref document: EP Effective date: 20250514 |
|
| WWP | Wipo information: published in national office |
Ref document number: 202380072612.9 Country of ref document: CN |
|
| WWP | Wipo information: published in national office |
Ref document number: 2023789904 Country of ref document: EP |