EP3077425A1 - Procédé de fabrication d'oligomères téléchéliques fonctionnalisés - Google Patents
Procédé de fabrication d'oligomères téléchéliques fonctionnalisésInfo
- Publication number
- EP3077425A1 EP3077425A1 EP14821788.8A EP14821788A EP3077425A1 EP 3077425 A1 EP3077425 A1 EP 3077425A1 EP 14821788 A EP14821788 A EP 14821788A EP 3077425 A1 EP3077425 A1 EP 3077425A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- styrene
- group
- ionic liquid
- catalyst
- substituted
- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
- C08J11/18—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material
- C08J11/22—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic oxygen-containing compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/08—Depolymerisation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C19/28—Reaction with compounds containing carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C2/00—Treatment of rubber solutions
- C08C2/02—Purification
- C08C2/04—Removal of catalyst residues
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
- C08J11/16—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L19/00—Compositions of rubbers not provided for in groups C08L7/00 - C08L17/00
- C08L19/006—Rubber characterised by functional groups, e.g. telechelic diene polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
- C08C19/00—Chemical modification of rubber
- C08C2019/09—Metathese
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2319/00—Characterised by the use of rubbers not provided for in groups C08J2307/00 - C08J2317/00
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2321/00—Characterised by the use of unspecified rubbers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Definitions
- the present invention relates to the manufacture of functionalized telechelic polymers. More specifically, the invention relates to a method of manufacturing telechelic polymers functionalized by controlled degradation of polymeric chains. The method comprises a metathesis reaction in the presence of a catalyst and a functionalising agent in an ionic liquid medium.
- Polymers are ubiquitous in a wide variety of fields such as the automotive industry, transportation, medical equipment and construction. In view of the increasing use of polymers, two major problems arise: (1) the synthesis of polymers having specific properties according to the intended use and (2) the recycling of polymer waste.
- the manufacture of polymers can be carried out by the polymerization of monomers but this process is limited as to the diversity of the polymers that can be obtained.
- a more recent method is to obtain polymers from telechelic oligomers.
- the latter are linear oligomers having a function at each of their two ends. Due to the presence of these two reactive groups, they can undergo polymerization reactions allowing the synthesis of new polymers of interest. They are thus useful in the manufacture of long chains of linear or branched polymers, but also in the formation of block copolymers whose compatibilizing properties are highly appreciated, especially for producing multiphase structures.
- the advantage of the third method is to be able to synthesize telechelic oligomers having a length and functionalities adapted to the desired use. Another advantage is to allow the recycling of existing polymers in the case where polymer waste is used as a raw material.
- WO 2008/027269 also describes the degradation of polymers by metathesis allowing the formation of telechelic oligomers.
- the oligomers obtained have an average functionality of between 1.8 and 2.5 and the metathesis reaction is carried out as an organic solvent.
- WO 2013/098052 describes a process for preparing a nitrile rubber having reduced molar masses. This method relates to a metathesis degradation reaction in ionic liquid. However, this method does not describe obtaining telechelic oligomers having end-of-line functionalities. In addition, no results relating to the recycling of the catalytic system were presented.
- the Applicant has thus developed a method for producing telechelic oligomers functionalized from high molecular weight polymers and having unsaturations.
- the method of the invention allows the degradation of polymers catalytically in an ionic liquid medium and in the presence of a functionalizing agent.
- the use of an ionic liquid medium makes it possible to limit the use of toxic solvents and allows catalyst recycling which greatly reduces the amount of catalyst used. Indeed, at the end of the reaction, the products obtained are separated from the reaction medium but the catalyst remains in the ionic liquid medium which allows extremely low contamination of the oligomers obtained by the catalyst and obtaining better yields because of the absence of by-products.
- Another advantage of the process of the invention relates to the properties of the telechelic oligomers obtained which have a controlled polydispersity and a net functionality.
- the telechelic oligomers obtained according to the process of the invention may allow the synthesis of various polymers such as hydroxytelechelic polybutadiene (PBHT), polybutadiene derivatives used as prepolymers for the manufacture of composite propellants. They could also serve as compatibilizer for the preparation of multiphase polymers.
- PBHT hydroxytelechelic polybutadiene
- polybutadiene derivatives used as prepolymers for the manufacture of composite propellants. They could also serve as compatibilizer for the preparation of multiphase polymers.
- Raw material refers to a polymer of high molecular weight and having at least two unsaturations.
- net functionality refers to the exact number of features that each oligomer possesses; the term functionality refers to a reactive site allowing polymerization reactions, their number being determined by 1 H NMR and 13 C and Infrared.
- Wash refers to any residue of a production process of processing or use, any substance, material or, more generally, any good or furniture that has been refused, unwanted, abandoned or that its holder intends to abandon.
- Pulmatic waste refers to used tires, tire manufacturing waste and retread waste, including cut tires, shreds, aggregates, crumbs.
- cut tire refers to a tire that has been cut into pieces larger than 300 mm.
- “Shreds” refers to a tire that has been cut into irregular pieces of 15 to 300 mm.
- Gramulate refers to pieces made from tires reduced to a particle size of between 1 and 15 mm by mechanical, cryogenic or thermal process.
- Powder refers to a powder formed of particles having a particle size of less than 1 mm, generally obtained by mechanical, cryogenic or thermal reduction.
- Treatment solvents refers to the mixture of the solvent used to stop the metathesis degradation reaction and the solvent for the precipitation of telechelic oligomers in the reaction medium.
- Precipitation solvent relates to a solvent miscible with the ionic liquid but in which the telechelic oligomers are not soluble and thus allowing at the end of the reaction, the ionic liquid and the telechelic oligomers are separated by precipitation of the latter.
- High molecular weight refers to a polymer before its degradation by the process of the invention and whose number average molecular weight Mn, measured by steric exclusion chromatography, is 1.5 to 90 times greater than the polymer obtained after degradation.
- Unsaturation refers to the existence of multiple (double or triple) bonds within a molecule; preferably, carbon-carbon unsaturations.
- the subject of the invention is a method for producing functionalized telechelic oligomers, comprising: a) contacting a raw material composed of at least one high molecular weight polymer having at least two unsaturations with a solution comprising or consisting of at least one ionic liquid, at least one metathesis catalyst and at least one functionalizing agent;
- the raw material is dissolved in an ionic liquid prior to being brought into contact with the solution comprising a metathesis catalyst and a functionalization agent.
- the method according to the invention comprises a preliminary step in which the ionic liquid is prepared.
- the method according to the invention comprises a step in which the metathesis catalyst contained in the liquid medium resulting from the separation of step b) is recycled.
- the raw material can be very varied.
- the raw material is composed of unsaturated polymers, in particular unsaturated elastomers, unsaturated thermoplastic polymers, unsaturated thermosetting polymers, or unsaturated plastomers.
- the raw material does not comprise nitrile functions.
- the raw material only comprises unsaturations of carbon-carbon type.
- the raw material is an unsaturated copolymer, of the type obtained by copolymerization of ethylene, propylene, butadiene, octene, benzene and / or styrene.
- the raw material is an EPDM (ethylene-propylene-diene monomer).
- the raw material is an EO (ethylene-octene).
- the raw material is an EB (ethylbenzene).
- the raw material is an SEBS (styrene-ethylene-butadiene-styrene).
- the raw material is a polynorbornene.
- the raw material is an SBR (styrene butadiene rubber, abbreviation of: Styrene-Butadiene Rubber).
- the raw material is a polybutadiene.
- the raw material is an NBR (acrylonitrile-butadiene, abbreviation of: Nitrile Butadiene Rubber).
- the raw material is an HNBR (partially hydrogenated acrylonitrile-butadiene, abbreviation for: Hydrogenated Nitrile-Butadiene Rubber).
- the raw material is an SBS (Styrene-Butadiene-Styrene).
- the raw material is a TPE (thermoplastic elastomer, abbreviation of Thermo-Plastic Elastomer).
- the raw material is a TPS (styrenic block copolymer, abbreviation for Thermo-Plastic Elastomer Styrenic).
- the raw material is a styrenic block copolymer selected from a group comprising SIS (Styrene-Isoprene-Styrene), SEBS (Styrene-Ethylene-Butylene-Styrene), SEPS (Styrene-Ethylene-Propylene-
- Styrene Styrene
- SEEPS Styrene-Ethylene-Ethylene / Propylene-Styrene
- the raw material is a mixture of polymers selected from a group comprising EPDM, EO, EB, SEBS, SBR, NBR, HNBR, SBS, TPE, TPS, SIS, SEBS, SEPS, SEEPS.
- the raw material is a mixture of natural and / or synthetic elastomers.
- the raw material is an unsaturated polymer which is a waste containing unsaturated polymers, especially rubber.
- the properties that make polymers interesting make them non-biodegradable materials that are difficult to recycle. Using them to manufacture telechelic oligomers is therefore an environmentally friendly way of recycling and enabling the recovery of polymer waste.
- said waste containing unsaturated polymers comes from (1) the automotive industry and include tires, windscreen wiper blades, airbags; (2) the general public and include, for example, gloves for household or medical purposes, teats, floor mats; (3) in the building industry and include, but not limited to, gaskets, pipes, cables.
- the raw material is a pneumatic waste.
- the pneumatic waste may be in the form of a cut tire, shreds, crumb or granulate, preferably crumb or granulate, generally obtained by removing the metal portion of the tire, lowering temperature and grinding used tires.
- the process of the invention in which the raw material is a waste containing rubber, preferably a pneumatic waste is simultaneously a process for the degradation and recycling of said waste and a method for producing telechelic oligomers. .
- the process of the invention has the dual advantage of allowing the recycling of existing polymers for the manufacture of new polymers.
- the metathesis catalyst is composed of a metal, an alkylidene and ligands.
- the metal is selected from a group consisting of ruthenium (Ru), molybdenum (Mo), Rhodium (Rh), tungsten (W), titanium (Ti), preferably ruthenium.
- the metathesis catalyst may be grafted onto a polymer, a resin or silica.
- the metathesis catalyst is selected from a group comprising a Grubbs I catalyst, a Grubbs II catalyst, a Hoveyda-Grubbs I catalyst and a Hoveyda Grubbs II catalyst.
- the metathesis catalyst is a Grubbs II catalyst.
- the metathesis catalyst is a Hoveyda Grubbs IL catalyst.
- the functionalizing agent is a hydrogen-carbon molecule having a symmetrical disubstituted carbon-carbon double bond and two functions chosen from a group comprising ketone, aldehyde, ester, amine, amide, imine, alcohol, ether, nitrile, thioether, thioketone, thioester, sulfoxide, phosphine, nitro, imidazole, quaternary ammonium and in this last case anion is selected from a group consisting of fluoride, chloride, bromide, iodide, tosylate, triflate.
- the functionalization agent has the general formula:
- R can be a grouping:
- R being selected from a group consisting of hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl;
- R being selected from a group consisting of hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, methyl-1,3-dioxolanone, methyloxirane;
- R being selected from a group consisting of hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, methyl-1,3-dioxolanone, methyloxirane;
- R 'and R being the same or different, each selected from a group consisting of hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl, acetyl, tert-butyl-acetyl;
- R', R ", R '" being identical or different and each selected from a group comprising substituted or unsubstituted alkyl, substituted or unsubstituted aryl and X " being an anion selected from a group consisting of fluoride, chloride, iodide, bromide, tosylate, triflate;
- R being selected from a group consisting of hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl;
- R being selected from a group consisting of hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl;
- -SO 2 R R being selected from a group consisting of hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl;
- R being selected from a group consisting of hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted aryl;
- the functionalizing agent selected from a group comprising cis-but-2-ene-diacetate, cis-but-2-ene-diketone, cis-but-2-ene-diol, cis-but-2-ene diamine, preferably cis-but-2-ene-diacetate.
- the ionic liquids of the invention consist of an anion and a cation and are of the general formula:
- - A n- is an anion selected from the group consisting of PF 6 -, NO 3 -, F-, Cl-, Br-, ⁇
- X is a nitrogen, phosphorus or sulfur atom with the proviso that when X is a sulfur atom, at least one of R 1 , R 2 , R 3 and R 4 is zero,
- R 1 , R 2 , R 3 , R 4 , R 5 'R 6 , R 7 and R 8 are identical or different each selected from a group comprising hydrogen, halogen, alkoxy, substituted or unsubstituted alkyl, substituted or unsubstituted aryl substituted, and R x -R 2 , R 2 -R 3 , R 3 -R 4 , R 4 -R 5 , R 5 -R 6 ,
- R 6 -R 7, R 7 -R 8 or R 8 -R 1 may represent a ring with 5, 6 or 7 carbon atoms
- Z 1, Z 2, Z 3 are identical or different and are chosen from a group comprising a carbon atom and a nitrogen atom, with the proviso that at least one of the atoms Z 1 , Z 2 and Z 3 represents a nitrogen atom and when one of the atoms Z 1, Z 2 and Z 3 is a nitrogen atom, the corresponding group R 1, R 2, R 3 is zero.
- the invention is carried out in at least one ionic liquid corresponding to one of the general formulas (II) to (IX) in which n is equal to 1 and A " is chosen from a group comprising PF 6 -, N0 3 -, F-, Cl-, Br-, ⁇ , R 9 S0 3 -, R 9 OSO 3 -, R 9 C0 3 -, CF 3 S0 3 -, BF 4 - , B (R 9 ) 4 -, CF 3 CO 2 , R 9 PO 2 -, (CF 3 SO 2 ) 2 N-, CH 3 SO 3 -, (C 12 H 2 5) C 6 H 4 SO 3 -, R 9 CO 2 -, R 9 being selected from a group comprising substituted or unsubstituted alkyl, substituted or unsubstituted aryl and alkoxy.
- the process of the present invention is carried out in at least one ionic liquid of general formula (II) wherein n is 1 and A- is selected from a group comprising PF 6 -, NO 3 - , F-, Cl-, Br-, I, R 9 SO 3 -, R 9 OSO 3 -, R 9 CO 3 -, CF 3 SO 3 -, BF 4 -, B (R 9 ) 4 -, CF 3 C0 2 -, R 9 P0 2 -, (CF 3 S0 2 ) 2 N-, CH 3 SO 3 - (C 12 H 2 5) C 6 H 4 SO 3 " , R 9 CO 2 " , R 9 being selected from a group consisting of substituted or unsubstituted alkyl, substituted or unsubstituted aryl, and alkoxy; X is a nitrogen, phosphorus or sulfur atom and R 1 , R 2 , R 3 , R 4 are the same or different and are selected from a group comprising
- the ionic liquid has the general formula (II), X being a phosphorus atom and R 1 , R 2 , R 3 , R 4 being identical or different and selected from a group comprising alkyl substituted or unsubstituted substituted, substituted or unsubstituted aryl, and alkoxy each of from 1 to 25 carbon atoms; preferably, R 1 , R 2 , R 3 , R 4 are the same or different and are C 4 alkyl, C 6 alkyl or C 14 alkyl.
- the process of the present invention is carried out in at least one ionic liquid of general formula (III) wherein n is 1 and A " is selected from a group comprising PF 6 " , NO 3 " , F “ , Cl “ , Br “ , I, R 9 SO 3 - , R 9 OSO 3 - , R 9 CO 3 -, CF 3 SO 3 -, BF 4 -, B (R 9 ) 4 -, CF 3 C0 2 , R 9 P0 2 -, (CF 3 S0 2 ) 2 N-, CH 3 SO 3 -, (C 12 H 2 5) C 6 H 4 SO 3 -, R 9 CO 2 -, R 9 being chosen in a group comprising substituted or unsubstituted alkyl, substituted or unsubstituted aryl, and alkoxy; R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are the same or different and are chosen from a group comprising substituted
- the process of the present invention is carried out in at least one ionic liquid of general formula (III) in which A " is selected from the group comprising PF 6 -, Cl-, Br-, I-, CF 3 S0 3 -, BF 4 -, CF 3 CO 2 , (CF 3 S0 2 ) 2 N-, R 2 , R 3 , R 4 , R 5 , R 6 are H and R 1 is chosen from a group comprising octyl, nonyl, dodecyl, tridecyl, tetradecyl and octadecyl.
- a " is selected from the group comprising PF 6 -, Cl-, Br-, I-, CF 3 S0 3 -, BF 4 -, CF 3 CO 2 , (CF 3 S0 2 ) 2 N-, R 2 , R 3 , R 4 , R 5 , R 6 are H and R 1 is chosen from a group comprising octyl, non
- the process of the present invention is carried out in at least one ionic liquid of general formula (IV) wherein n is 1 and A " is selected from a group comprising PF 6 -, NO 3 - , F-, Cl-, Br-, I, R 9 SO 3 -, R 9 OSO 3 -, R 9 CO 3 -, CF 3 SO 3 -, BF 4 - , B (R 9 ) 4 -, CF 3 C0 2 R 9 P0 2 -, (CF 3 S0 2) 2 N-, CH 3 S0 3 -, (C 12 H 2 5) C O H 4 S0 3 ", R 9 C0 2", R 9 being selected in a group comprising substituted or unsubstituted alkyl, substituted or unsubstituted aryl, and alkoxy; R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are the same or different and are selected from a group comprising substituted alkyl or unsubstituted ary
- Z 2 and Z 3 is a nitrogen atom, the group 1 2 3
- R, R, R is zero.
- the process of the present invention is carried out in at least one ionic liquid of general formula (V) wherein n is 1 and A " is selected from a group comprising PF 6 " , NO 3 " , F “ , Cl “ , Br “ , ⁇ , R 9 S0 3 “ , R 9 OSO 3 “ , R 9 CO 3 -, CF 3 SO 3 -, BF 4 -, B (RV, CF 3 CO 2 , R 9 P0 2 -, (CF 3 S0 2 ) 2 N-, CH 3 SO 3 -, (C 12 H 2 5) C 6 H 4 SO 3 -, R 9 CO 2 -, R 9 being chosen from a group comprising substituted or unsubstituted alkyl, substituted or unsubstituted aryl, and alkoxy; R 1 , R 2 , R 3 , R 4 and R 5 are the same or different and are selected from a group consisting of substituted or unsubstituted alkyl, substituted or
- the process of the present invention is carried out in at least one ionic liquid of general formula (VI) wherein n is 1 and A " is selected from a group comprising PF 6 -, NO 3 - , F-, Cl-, Br-, I, R 9 SO 3 -, R 9 OSO 3 -, R 9 CO 3 - , CF 3 SO 3 -, BF 4 - , B (R 9 ) 4 -, CF 3 C0 2 , R 9 P0 2 -, (CF 3 S0 2 ) 2 N-, CH 3 SO 3 -, (C 12 H 2 5) C 6 H 4 SO 3 -, R 9 CO 2 -, R 9 being chosen in a group comprising substituted or unsubstituted alkyl, substituted or unsubstituted aryl, and alkoxy; R 1 , R 2 , R 3 , R 4 and R 5 are the same or different and are selected from a group consisting of substituted or unsubstituted alkyl
- the method of the present invention is carried out in at least one ion of the general formula liquid (VII) wherein n is equal to 1 and A- is selected from a group comprising PF 6 -, N0 3 -, F-, Cl-, Br-, I, R 9 S0 3 -, R 9 OSO 3 -, R 9 C0 3 -, CF 3 S0 3 -, BF 4 - , B (R 9 ) 4 -, CF 3 C0 2 -, R 9 P0 2 -, (CF 3 S0 2 ) 2 N-, CH 3 SO 3 -, (C 12 H 2 5) C 6 H 4 SO 3 -, R 9 CO 2 -, R 9 being chosen from a group comprising substituted alkyl or unsubstituted, substituted or unsubstituted aryl, and alkoxy; R 1 , R 2 , R 3 and R 4 are the same or different and are selected from a group consisting of substituted or un
- the process of the present invention is carried out in at least one ionic liquid of general formula (VIII) wherein n is 1 and A " is selected from a group comprising PF 6 -, NO 3 - , F-, Cl-, Br-, I, R 9 SO 3 -, R 9 OSO 3 -, R 9 CO 3 -, CF 3 SO 3 -, BF 4 - , B (R 9 ) 4 -, CF 3 C0 2 , R 9 P0 2 -, (CF 3 S0 2 ) 2 N-, CH 3 SO 3 -, (C 12 H 2 5) C 6 H 4 SO 3 -, R 9 CO 2 " , R 9 being chosen in a group comprising substituted or unsubstituted alkyl, substituted or unsubstituted aryl, and alkoxy; R 1 , R 2 , R 3 and R 4 are the same or different and are selected from a group consisting of substituted or unsubstituted alky
- the process of the present invention is carried out in at least one ionic liquid of general formula (IX) wherein n is 1 and A " is selected from a group comprising PF 6 -, NO 3 - , F-, Cl-, Br-, ⁇ , R 9 S0 3 -, R 9 OSO 3 -, R 9 C0 3 -, CF 3 SO 3 -, BF 4 -, B (R 9 ) 4 -, CF 3 C0 2 -, R 9 PO 2 -, (CF 3 S0 2 ) 2 N-, CH 3 SO 3 -, (C 12 H 2 5) C 6 H 4 SO 3 -, R 9 CO 2 -, R 9 being selected from a group consisting of substituted or unsubstituted alkyl, substituted or unsubstituted aryl, and alkoxy; R, R, R, R, R ', R, R and R are the same or different and are selected from a group comprising substituted or unsubstituted al
- the process of the present invention is carried out in at least one ionic liquid of general formula (IX) in which A " is selected from a group comprising PF 6 -, Cl-, Br-, I-, CF 3 SO 3 -, BF 4 -, CF 3 CO 2 -, (CF 3 SO 2 ) 2 N-; R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 are H; and R 1 is selected from the group consisting of octyl, nonyl, dodecyl, tridecyl, tetradecyl and octadecyl.
- IX general formula
- the ionic liquid is of general formula (II), X being a phosphorus atom, (III), (VI) or (IX).
- the ionic liquid is chosen from a group comprising imidazolium of general formula (VI) chosen from a group comprising 1-allyl-3-methylimidazolium chloride ([AMIM] [C1]), 1-butyl-3-methylimidazolium chloride ([BMIM] [C1]), 1-butyl-3-methylimidazolium tetrafluoroborate ([BMIM] [BF4]), 1-butyl-3-methylimidazolium sulfonate ([BMIM] [ HS04]), 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM] [PF6]), 1-butyl-3-methylimidazolium trifluoromethanesulfonate ([BMIM] [CF3SO3); the phophon
- the process is carried out with ci5 , -but-2-ene-diacetate (DAB) as functionalizing agent, Grubbs II as a metathesis catalyst and triphenyl (tetradecyl) phosphonium chloride as ionic liquid.
- the process is carried out with ci5 , -but-2-ene-diacetate (DAB) as functionalizing agent, Hoveyda-Grubbs II as metathesis catalyst and ⁇ , ⁇ -dioctylimidazolium bromide as liquid. ionic.
- the subject of the invention is also a composition of functionalized telechelic oligomers that can be obtained by the process of the invention, said telechelic oligomers having a net functionality of 2.
- the telechelic oligomers have 2 identical functions corresponding to the functions carried by the functionalizing agent, said functions being chosen from a group comprising ketone, aldehyde, ester, amine, amide, imine, alcohol, ether, nitrile , thioether, thioketone, thioester, sulfoxide, phosphine, nitro, imidazole, quaternary ammonium and in the latter case the anion is selected from a group comprising fluoride, chloride, bromide, iodide, tosylate, triflate.
- the oligomer mixture obtained according to the process of the present invention is characterized in that the mass of said telechelic oligomers is between 5,000 and 300,000 g.mol -1 , preferably between 10,000 and 200,000 g.mol -1 , more preferably between 20,000 and 100,000 g.mol -1 .
- the ratio between the molecular weight of the high molecular weight polymer and the average molar mass of the telechelic oligomers is between 90 and 1.5, preferably between 45 and 2.2, more preferably between 22 and 4. 5.
- the telechelic oligomers are obtained at the end of the reaction with a yield of 20 to 100%, preferably 40 to 100%, more preferably 60 to 100%.
- the telechelic oligomer composition obtained according to the method of the present invention comprises a quantity of metathesis catalyst ranging from 0.1 to 100 ⁇ g / g, preferably from 1 to 50 ⁇ g / g, more preferentially less than 10 ⁇ g / g.
- the residual quantity of ruthenium in the mixture of functionalized telechelic oligomers is within the limits of the specifications given by the European Medical Agency (Guideline on the specification for metal catalysts or metal reagents, No. EMEA / CHMP / SWP / 4446/2000).
- the telechelic oligomers obtained according to the process of the invention may be recovered for the preparation of polymeric materials by reactions selected from a group comprising polyaddation and block copolymerization.
- the polymer of high molecular weight and having unsaturations is placed in an ionic liquid medium containing at least one metathesis catalyst and at least one functionalizing agent.
- the high molecular weight polymer is placed in ionic liquid medium before being mixed with the ionic liquid solution containing at least one metathesis catalyst and at least one functionalizing agent.
- the high molecular weight polymer is present in the reaction mixture at a concentration ranging from 0.01 to 5 moles per liter of ionic liquid, preferably 0.05 to 2 mol / l, more preferably 0.1 at 1 mol / L.
- the amount of metathesis catalyst in the reaction mixture is between 0.01 to 20 mol% relative to the number of moles of polymer, preferably 0.1 to 10%, more preferably 0.5 to 5%.
- the amount of metathesis catalyst in the reaction mixture is 1 mol% relative to the number of moles of polymer.
- the amount of functionalization agent in the reaction mixture is between 0.01 to 20 mol% relative to the number of moles of polymer, preferably 0.1 to 10%, more preferably 0.5. at 5 %.
- the reaction mixture is stirred under nitrogen at a temperature ranging from -20 to 300 ° C, preferably from 0 to 150 ° C, more preferably from 20 ° C to 100 ° C. According to a preferred embodiment, the reaction mixture is stirred at a temperature of 50 ° C. According to another embodiment, the reaction is stopped by adding a solvent chosen from ethyl vinyl ether and ether, and the telechelic oligomers are obtained by precipitation after adding a solvent selected from a group comprising acetone, isopropanol, ethanol, isobutanol, propanol, dioxane. According to one embodiment, the mixture comprising the ionic liquid and the treatment solvents is separated from the telechelic oligomers.
- the metathesis catalyst can be recycled at the end of the reaction.
- the high molecular weight polymer is present in the reaction mixture at a concentration ranging from 0.1 to 15 moles per liter of ionic liquid, preferably 0.5 to 5 mol / l, more preferably from 1 to at 10 mol / L.
- the reaction is stopped by adding the alkylidene corresponding to the metathesis catalyst used, preferably 2- (propoxy) styrene in an amount ranging from 70 to 150% by number of moles relative to the number of moles of polymers, preferably from 80 to 140%, more preferably from 90 to 130%.
- the precipitation of the telechelic oligomers obtained is carried out with a solvent chosen from a group comprising acetone, isopropanol, ethanol, isobutanol, propanol and dioxane.
- the mixture comprising the precipitation solvent, the ionic liquid, the metathesis catalyst, 2- (propoxy) styrene and the functionalizing agent is evaporated under reduced pressure to remove said precipitation solvent.
- the mixture comprising the ionic liquid, the metathesis catalyst, 2- (propoxy) styrene and the functionalizing agent is then obtained and can be used to carry out another reaction by simply adding a new high molecular weight polymer.
- the reaction medium may be used between 1 and 20 times, preferably between 1 and 10 times, more preferably between 1 and 6 times without loss of efficiency for the reaction yield.
- FIG. 1 is a reaction diagram of an exemplary preparation of functionalized telechelic oligomers, according to the invention.
- Figure 2 is a schematic of an example of preparation of telechelic oligomers according to the invention, wherein the metathesis catalyst is recycled.
- NMR spectra were recorded on a Bruker Avance Spectrometer instrument for proton NMR (500 MHz). The chemical shifts ( ⁇ ) are given in ppm with reference to tetramethylsilane (TMS).
- TMS tetramethylsilane
- Mn molar mass
- Mn and the polydiversity index are measured by steric exclusion chromatography (SEC) with a Waters system (pump 515 hplc, differential refractometer 410 and a photodiode detector) with two columns Styragel Waters (HR5E THF 7.8 x 300 mm 2000 to 4 x 10 6 gmol-1 and HR1 THF 7.8 x 300 mm 100 to 4000 gmol-1).
- Size exclusion chromatography was performed at 35 ° C with tetrahydrofuran as eluent at a flow rate of 1 mL / min. Calibration of size exclusion chromatography was performed using standard linear polystyrenes (ranging from 1.27 x 10 3 g / mol to 3.04 x 10 6 g / mol). The polyisoprene molecular weight was corrected by the Benedict factor of 0.67 in accordance with the formula of the reference Busnel et al., Polymer, 1982, 23, 137. The high molecular weight cis-polyisoprene was used without purification. beforehand and freeze-dried. All reactions were carried out in schlenk tubes under a nitrogen atmosphere.
- Acetone is distilled on anhydrous potassium carbonate under argon.
- Starting materials are from Sigma Aldrich and have been used without prior purification.
- 2- (2-propoxy) styrene, ⁇ , ⁇ -dioctylimidazolium bromide and cis-1,4- Diacetoxy-2-butene were prepared as described in the literature (Garber et al., J. Am Chem Soc, 2000, 122, 8168, Livi et al., Chem Commun, 2001, 16, 1466; et al., Chem Commun 2003, 15, 1834).
- Blends A and B are then combined and then stirred at 47 ° C. for 14 hours.
- the reaction is then stopped by adding ethyl vinyl ether still under nitrogen.
- 70 mL of anhydrous acetone are added to precipitate the functionalized telechelic oligomers.
- the oligomers are then separated from the reaction medium and washed several times with acetone.
- the functionalized telechelic oligomers are then dried under vacuum and are obtained with a yield of 97%.
- reaction mixture comprising the catalyst, acetone, ionic liquid and 2- (2-propoxy) styrene is transferred to a flask and the acetone is evaporated under vacuum.
- the resulting mixture was extracted with 5 mL of anhydrous pentane to remove 2- (2-propoxy) styrene and dried under vacuum for 15 minutes.
- the reaction medium can then be used again for another reaction cycle after addition of the functionalizing agent and stirring for 40 minutes followed by the addition of the rubber.
- Table 4 indicates the molar masses in number and mass of the oligomers obtained and the reaction yield in the ionic liquid medium ([DOIM] [Br]) recycled from 1 to 6 times.
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FR1361980A FR3014104B1 (fr) | 2013-12-03 | 2013-12-03 | Procede de fabrication d'oligomeres telecheliques fonctionnalises |
PCT/FR2014/053149 WO2015082842A1 (fr) | 2013-12-03 | 2014-12-03 | Procédé de fabrication d'oligomères téléchéliques fonctionnalisés |
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FR3092836B1 (fr) | 2019-02-19 | 2023-04-21 | Centre Nat Rech Scient | Synthèse de polymères fonctionnalisés par dévulcanisation à partir de déchets contenant des élastomères. |
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