Functionalized vinyl acetate, process for its preparation and use thereof

Abstract

The present invention relates to a functionalized vinyl acetate compound and its use in various applications.

Description

Title of the invention: Functionalized vinyl acetate, preparation process and use thereof Technical field

[0001] The present invention relates to functionalized vinyl acetate compounds and the preparation and use thereof in various applications. In particular, the obtained compounds can be used as a monomer or comonomer for the preparation of an electrode binder or separator. More specifically, the compounds can be used to prepare a functionalized halogenated polymer, such as polyvinylidene fluoride. Technological background of the invention

[0002] Halogenated polymers are widely used in many technical fields due to their unique properties in terms of thermal stability, chemical inertness and mechanical properties. They can thus be used in the fields of aeronautics, engineering, the automotive or chemical industry or in insulating materials.

[0003] Polyvinylidene fluoride (PVDF) is particularly preferred in many application areas such as piezoelectric materials, energy storage or water treatment. PVDF can be prepared by suspension or emulsion processes. Depending on the process used, PVDF can have a different molecular structure and a different reactivity towards other monomers. The difference in structure as well as the possible functionalization of the polymer chain can have a significant impact on the targeted technological applications.

[0004] Emulsion polymerization is characterized by its high productivity and gives branched products and the incorporation of functional monomers can be complex. Functionalization of PVDF can also be achieved by plasma treatment and electron beam irradiation approaches. However, some technical limitations such as industrialization and repeatability can be difficult.

[0005] There is therefore a need for a new method for preparing a halogenated polymer that is simple, efficient and has limited environmental impact. Summary of the invention

[0006] According to a first aspect, the present invention relates to a compound of formula (I) R5 R1 ÀH 0. J-, , >r y- r2 to 3 (i)

[0007] wherein R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and C1-C5 alkyl;

[0008] X is selected from the group consisting of C1-C18 alkyl, C2-C18 alkenyl, C4-C18 cycloalkenyl, C3-C18 cycloalkyl, C6-C18 aryl, polyalkylene glycol, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO 3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C1-C18 alkyl, C2-C18 alkenyl, C4_Ci8 cycloalkenyl, C3_Ci8 cycloalkyl and C6-Ci8 aryl;

[0009] Y is selected from the group F, Cl, Br, I, -CN, -OR”, -C(O)OR”, -SO3R”, C(O)C1, -O-Si(OR”)3, -Si(R”)3, -OP(O)(OR”)2, -P(O)(OR”)2,-C(O)R”, -C(O)-SR”, -C(O)-NR”2 with R” selected from the group consisting of H, C1_C18 alkyl, C2_C18 alkenyl, C4_C[8 cycloalkenyl, C3_C18 cycloalkyl and C6-C18 aryl.

[0010] According to a preferred embodiment, in the compound of formula (I) R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H, CrC3 alkyl;

[0011] X is selected from the group consisting of C1-C10 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cycloalkyl, C6-C10 aryl, polyalkylene glycol, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO 3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C1-C10 alkyl, C2-C10 alkenyl, C4_Ci0 cycloalkenyl, C3_Ci0 cycloalkyl and C6-Ci0 aryl; Y is selected from the group consisting of F, Cl, Br, I, -CN, -OR”, -C(O)OR”, -SO3R”, C(O)C1, -O-Si(OR”)3, -Si(R”)3 , -OP(O)(OR”)2, -P(O)(OR”)2,-C(O)R”, -C(O)-SR”, -C(O)-NR”2 with R” selected from the group consisting of H, C1.Ci0 alkyl, C1.Ci0 alkyl, C2_Ci0 alkenyl, C4_Ci0 cycloalkenyl, C3_Ci0 cycloalkyl and C6-Ci0 aryl.

[0012] According to a preferred embodiment, said compound is of formula (Ia) (there)

[0013] in which

[0014] R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and CrC3 alkyl;

[0015] R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H, C1_C10 alkyl, C2_C10 alkenyl, C4-C10 cycloalkenyl, C3_C10 cycloalkyl, C6-C10 aryl, polyalkylene glycol, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3 + in which R' is independently selected for each substituent of the functional group from the group consisting of H, C1-C10 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cycloalkyl and C6-C10 aryl;

[0016] n is an integer from 1 to 15, preferably from 1 to 10, in particular from 1 to 5, more particularly from 2 to 5;

[0017] Y is selected from the group F, Cl, Br, I, -CN, -OR”, -C(O)OR”, -SO3R”, C(O)C1, -O-Si(OR”)3, -Si(R”)3, -OP(O)(OR”)2, -P(O)(OR”)2,-C(O)R”, -C(O)-SR”, -C(O)-NR”2 with R” selected from the group consisting of H, C1_C10 alkyl, C1_C10 alkyl, C2_C10 alkenyl, C4_C10 cycloalkenyl, C3_C10 cycloalkyl and C6-C10 aryl.

[0018] According to a preferred embodiment, said compound is of formula (Ia) R5 R1 Y.Rb. SA J. 7 Fr1 YYY 'R ” R7 6 R3 (there)

[0019] in which

[0020] R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and CrC3 alkyl;

[0021] R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H, C1-C5 alkyl, C3-C10 cycloalkyl, C6-C10 aryl, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', - C(O)-NR'2, -NR'3+ wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C, Cm alkyl, C2 C 10 alkenyl, C4_C10 cycloalkenyl, C3_Ci0 cycloalkyl and C6-Ci0 aryl;

[0022] n is an integer from 1 to 15, preferably from 1 to 10, in particular from 1 to 5, more particularly from 2 to 5;

[0023] Y is selected from the group -CN, -C(O)OR”, -SO3R”, -OP(O)(OR”)2, -P(O)(OR”)2,- with R” selected from the group consisting of H, C1-C10 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cycloalkyl and C6-C10 aryl.

[0024] According to a preferred embodiment, said compound is of formula (Ia) R5 R1

[0025] in which

[0026] R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and CrC3 alkyl;

[0027] R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H, C1-C5 alkyl, C3-C10 cycloalkyl, C6-C10 aryl, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ in which R' is independently selected for each substituent of the functional group from the group consisting of H, C, Cm alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cycloalkyl, C6-C10 aryl; preferably R' is independently selected for each substituent of the functional group from the group consisting of H and C1-C3 alkyl;

[0028] n is an integer from 1 to 15, preferably from 1 to 10, in particular from 1 to 5, more particularly from 2 to 5;

[0029] Y is selected from the group -C(O)OR”, -SO3R”, -OP(O)(OR”)2, -P(O)(OR”) 2,- with R” selected from the group consisting of H and C1-C3 alkyl; preferably R” is H.

[0030] According to another aspect, the present invention relates to a process for preparing the compound of formula (I), (Ia) as described in the present application comprising a step a) of reaction between a compound of formula (IIa) r7 b æ (Ha>

[0031] and a thiol compound of formula (IIb) YX-SH in the presence of a base;

[0032] in which

[0033] R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and C1-C5 alkyl;

[0034] X is selected from the group consisting of C1-C18 alkyl, C2-C18 alkenyl, C4-C18 cycloalkenyl, C3-C18 cycloalkyl, C6-C18 aryl, polyalkylene glycol, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO 3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C1-C18 alkyl, C2-C18 alkenyl, C4_C[8 cycloalkenyl, C3_Ci8 cycloalkyl and C6-Ci8 aryl;

[0035] Y is selected from the group F, Cl, Br, I, -CN, -OR”, -C(O)OR”, -SO3R”, C(O)C1, -O-Si(OR”)3, -Si(R”)3, -OP(O)(OR”)2, -P(O)(OR”)2,-C(O)R”, -C(O)-SR”, -C(O)-NR”2 with R” selected from the group consisting of H, C1-C18 alkyl, C2-C18 alkenyl, C4-C18 cycloalkenyl, C3-C18 cycloalkyl and C6-C18 aryl; to form the compound of formula (I).

[0036] According to a preferred embodiment, the thiol compound is of formula (IIb') V f LH (ilb')

[0037] R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H, C1_C10 alkyl, C2_C10 alkenyl, C4_C10 cycloalkenyl, C3_C10 cycloalkyl, C6-C10 aryl, polyalkylene glycol, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3 + in which R' is independently selected for each substituent of the functional group from the group consisting of H, C, Cm alkyl, C2 Cio alkenyl, C4_Cio cycloalkenyl, C3_Ci0 cycloalkyl and C6-Ci0 aryl;

[0038] n is an integer from 1 to 15, preferably from 1 to 10, in particular from 1 to 5, more particularly from 2 to 5;

[0039] Y is selected from the group F, Cl, Br, I, -CN, -OR”, -C(O)OR”, -SO3R”, C(O)C1, -O-Si(OR”)3, -Si(R”)3, -OP(O)(OR”)2, -P(O)(OR”)2,-C(O)R”, -C(O)-SR”, -C(O)-NR”2 with R” selected from the group consisting of H, C1-C10 alkyl, C1-C10 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cycloalkyl and C6-C10 aryl; to form the compound of formula (Ia).

[0040] According to a preferred embodiment, said base is selected from the group consisting of LiOH, NaOH, KOH, CsOH, RbOH, Mg(OH)2, Ca(OH)2, N(CmH2m+1)3 with m being an integer from 1 to 10, N,N-Diisopropylethylamine, morpholine, pyridine, pyrrolidine, Piperidine, piperazine, 4-Methylmorpholine, N,N-Diisopropylethylamine, l,8-Diazabicyclo(5.4.0)undec-7-ene, triethylenediamine, 6-(Dibutylamino)-l,8-diazabicyclo[5.4.0]undec-7-ene, l,8-Diazabicyclo[5.4.0]undec-7-ene bound to polystyrene, l,5,7-Triazabicyclo[4.4.0]dec-5-ene, 7-Methyl-l,5,7-triazabicyclo[4.4.0]dec-5-ene, 1,1,3,3-Tetramethylguanidine, 2-tert-Butyl-1,1,3,3-tetramethylguanidine, l,5,7-Triazabicyclo[4.4.0]dec-5-ene bound to polystyrene, 1,4-Diazabicyclo[2.2.2]octane, Quinuclidine, 1,5-Diazabicyclo(4.3.0)non-5-ene, 2,6-Di-tert-butylpyridine, 2,8,9-Trimethyl-2,5,8,9-tetraza-l-phosphabicyclo[3.3.3]undecane, Cyclodi-phosphazane, Lithium diisopropylamide, sodium diisopropylamide, potassium diiso-propylamide, magnesium diisopropylamide, calcium diisopropylamide, rubidium diisopropylamide, lithium bis(trimethylsilyl)amide, sodium bis(trimethylsilyl)amide, potassium bis(trimethylsilyl)amide, magnesium bis(trimethylsilyl)amide, calcium bis(trimethylsilyl)amide, rubidium bis(trimethylsilyl)amide, lithium tetramethylpi-peridide, sodium tetramethylpiperidide, potassium tetramethylpiperidide, magnesium tetramethylpiperidide, calcium tetramethylpiperidide, rubidium tetramethylpiperidide, [18-crown-6]-KHF2, KHF2, N,N'-diisopropylimidazonium, bifluoride, tetrabuty-lammonium, N(CmH2m+i)4 OH- with m being an integer from 1 to 10. .

[0041] According to a preferred embodiment, in step a), the molar content of said base is from 1 mol to 500 mol per 100 mol of said compound (IIb) or (IIb').

[0042] According to a preferred embodiment, step a) is carried out under an atmosphere containing less than 10 molar oxygen, preferably step a) is carried out under a nitrogen atmosphere.

[0043] According to another aspect, the present invention relates to a polymer PO comprising monomeric units derived from a fluorinated monomer MO comprising a C=C double bond and at least one fluorine atom and monomeric units derived from the compound of formula (I) according to the present invention.

[0044] According to another aspect, the present invention relates to a composition comprising a fluorinated polymer PI and a polymer P2 comprising monomeric units derived from the compound of formula (I) according to the present invention.

[0045] According to another aspect, the present invention relates to an electrode binder comprising said polymer according to the present invention or said composition according to the present invention.

[0046] According to another aspect, the present invention relates to a separator comprising said polymer according to the present invention or said composition according to the present invention.

[0047] According to another aspect, the present invention relates to an electrode comprising an active material, a binder according to the present invention and optionally a conductive agent.

[0048] According to a preferred embodiment, said electrode is a positive electrode and the active material is selected from the group consisting of LiCoO2, Li(Ni, Co, AI)O2, Li(i+x),NiaMnbCoc (x represents a real number of 0 or more, a = 0.9, 0.8, 0.6, 0.5, or 1 / 3, b = 0.05, 0.1, 0.2, 0.3, or 1 / 3, c = 0.05, 0.1, 0.2, or 1 / 3), LiNiO2, LiMn2O4, LiCoMnO4, Li3NiMn3O3, Li3Fe2(PO4)3, Li3V2(PO4)3, a spinel Li Mn substituted by a different element having a composition represented by Lii+xMn2_x_yMyO4, M representing at least one metal selected from Al, Mg, Co, Fe, Ni, and Zn, x and y independently representing a real number between 0 and 2, lithium titanate Lix TiOy - x and y independently representing a real number between 0 and 2, and a lithium metal phosphate having a composition represented by LiMPO4, M representing Fe, Mn, Co, or Ni.

[0049] According to another preferred embodiment, said electrode is a negative electrode and the active material is selected from the group consisting of a lithium alloy, lithium metal, a metal oxide, a carbon material such as graphite or hard carbon, silicon, silicone, a silicon alloy and Li4Ti50i2.

[0050] According to another aspect, the present invention relates to a Li-ion secondary battery comprising a positive electrode, a negative electrode and a separator; said separator being according to the present invention and / or one of said electrodes being according to the present invention.

[0051] According to another aspect, the present invention relates to the use of the compound according to the present invention or the polymer according to the present invention or the composition according to the present invention in the preparation of a conductive polymer, a solid electrolyte for fuel cells, paints, cables, wires, anti-corrosion equipment for the chemical industry, coatings for construction or architecture. Detailed description of the invention

[0052] The present invention relates to functionalized vinyl acetate compounds. The present invention provides an efficient and simple process for preparing these compounds via a thiol-ene reaction. The process is carried out without a catalyst. metallic with volatile reagents thus facilitating purification. The compound thus synthesized is of significant interest in applications related to batteries and more generally to energy storage. Compound of formula (I)

[0053] According to a first aspect, the present invention provides a functionalized vinyl acetate compound. According to one embodiment, the present invention relates to a compound of formula (I) R5 H1 Y-, A ÀH A J. , "V y Y tf'R6 b r3 (i)

[0054] wherein R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and C1-C5 alkyl;

[0055] X is selected from the group consisting of C1-C18 alkyl, C2-C18 alkenyl, C4-C18 cycloalkenyl, C3-C18 cycloalkyl, C6-C18 aryl, polyalkylene glycol, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO 3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C1-C18 alkyl, C2-C18 alkenyl, C4_Ci8 cycloalkenyl, C3_Ci8 cycloalkyl and C6-Ci8 aryl;

[0056] Y is selected from the group F, Cl, Br, I, -CN, -OR”, -C(O)OR”, -SO3R”, C(O)C1, -O-Si(OR”)3, -Si(R”)3, -OP(O)(OR”)2, -P(O)(OR”)2,-C(O)R”, -C(O)-SR”, -C(O)-NR”2 with R” selected from the group consisting of H, C1_C18 alkyl, C2_C18 alkenyl, C4_C[8 cycloalkenyl, C3_C18 cycloalkyl and C6-C18 aryl.

[0057] Advantageously, said compound is of formula (I) in which R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and CrC3 alkyl;

[0058] X is selected from the group consisting of C1-C10 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cycloalkyl, C6-C10 aryl, polyalkylene glycol, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO 3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C1-C10 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3_Cio cycloalkyl, C6-Ci0 aryl; Y is selected from the group F, Cl, Br, I, -CN, -OR”, -C(O)OR”, -SO3R”, C(O)C1, -O-Si(OR”)3, -Si(R”)3 , -OP(O)(OR”)2, -P(O)(OR”)2,-C(O)R”, -C(O)-SR” and -C(O)-NR”2 with R” selected from the group consisting of H, C1_C10 alkyl, C2_C10 alkenyl, C4_C10 cy-cloalkenyl, C3_C10 cycloalkyl and C6-C10 aryl.

[0059] Preferably, said compound is of formula (I) in which R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H, CrC3 alkyl;

[0060] X is selected from the group consisting of C1-C10 alkyl, C6-C10 aryl, polyalkylene glycol, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C, C|0 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cycloalkyl and C6-C10 aryl; Y is selected from the group F, Cl, Br, I, -CN, -OR”, -C(O)OR”, -SO3R”, C(O)C1, -O-Si(OR”)3, -Si(R”)3, -OP(O)(OR”)2, -P(O)(OR”)2,-C(O)R”, -C(O)-SR”, -C(O)-NR”2 with R” selected from the group consisting of H, C1-C10 alkyl and C6-C10 aryl.

[0061] More preferably, said compound is of formula (I) in which R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H, C1-C3 alkyl;

[0062] X is selected from the group consisting of C 1 -C 5 alkyl, polyalkylene glycol, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3 + wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C, Cm alkyl, C2 Cio alkenyl, C4_Cio cycloalkenyl, C3_Ci0 cycloalkyl and C6-Ci0 aryl; Y is selected from the group F, Cl, Br, I, -CN, -OR”, -C(O)OR”, -SO3R”, C(O)C1, -O-Si(OR”)3, -Si(R”)3 , -OP(O)(OR”)2, -P(O)(OR”)2,-C(O)R”, -C(O)-SR”, -C(O)-NR”2 with R” selected from the group consisting of H, C1-C5 alkyl and C6-C10 aryl.

[0063] According to a preferred embodiment, the group X is an alkyl radical of CR8R9 units. Thus, said compound of formula (I) is of formula (Ia) R5 R? Y^. XAA •> R6 GOLD" (Its)

[0064] in which

[0065] R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and CrC3 alkyl;

[0066] R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H, C1_C10 alkyl, C2_C10 alkenyl, C4-C10 cycloalkenyl, C3_C10 cycloalkyl, C6-C10 aryl, polyalkylene glycol, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3 + in which R' is independently selected for each substituent of the functional group from the group consisting of H, C, Cm alkyl, C2 C,o alkenyl, C4_Cio cycloalkenyl, C3_Ci0 cycloalkyl and C6-Ci0 aryl;

[0067] n is an integer from 1 to 15, preferably from 1 to 10, in particular from 1 to 5, more particularly from 2 to 5;

[0068] Y is selected from the group F, Cl, Br, I, -CN, -OR”, -C(O)OR”, -SO3R”, C(O)C1, -O-Si(OR”)3, -Si(R”)3, -OP(O)(OR”)2, -P(O)(OR”)2,-C(O)R”, -C(O)-SR”, -C(O)-NR”2 with R” selected from the group consisting of H, C1.C10 alkyl, C1.C10 alkyl, C2_Ci0 alkenyl, C4.C10 cycloalkenyl, C3_Ci0 cycloalkyl and C6-Ci0 aryl.

[0069] According to a preferred embodiment, said compound is of formula (Ia) R5 R1 HAS -, C-r'] YV 'Y' $7 R9'"” UL R7 RO R3 (there)

[0070] in which

[0071] R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and C1-C3 alkyl;

[0072] R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H, C1-C5 alkyl, C3-C10 cycloalkyl, C6-C10 aryl, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ in which R' is independently selected for each substituent of the functional group from the group consisting of H, C, Cm alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-Ci0 cycloalkyl and C6-Ci0 aryl;

[0073] n is an integer from 1 to 15, preferably from 1 to 10, in particular from 1 to 5, more particularly from 2 to 5;

[0074] Y is selected from the group -CN, -C(O)OR”, -SO3R”, -OP(O)(OR”)2, - P(O)(OR”)2,- with R” selected from the group consisting of H, CYCio alkyl, C2C 10 alkenyl, C4_C10 cycloalkenyl, C3_Cio cycloalkyl and C6-Ci0 aryl.

[0075] Advantageously, said compound is of formula (Ia) R5 R1 TO HQX 7 R ' R7'R6 t (you)

[0076] in which

[0077] R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and C1-C3 alkyl;

[0078] R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H, C1-C5 alkyl, C3-C10 cycloalkyl, C6-C10 aryl, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ in which R' is independently selected for each substituent of the functional group from the group consisting of H, C, Cm alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cycloalkyl, C6-C10 aryl; preferably R' is independently selected for each substituent of the functional group from the group consisting of H and C1-C3 alkyl;

[0079] n is an integer from 1 to 15, preferably from 1 to 10, in particular from 1 to 5, more particularly from 2 to 5;

[0080] Y is selected from the group -C(O)OR”, -SO3R”, -OP(O)(OR”)2, -P(O)(OR”) 2,- with R” selected from the group consisting of H and C, C3 alkyl; preferably R” is H.

[0081] Preferably, said compound is of formula (Ia) R5 FJ „ÀH AJ \ 7 PX] XVX “ R9' >«6 II L R7 Ô R3 (you)

[0082] in which

[0083] R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and CrC3 alkyl;

[0084] R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H, C1-C5 alkyl, C6-C10 aryl, op- tionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3 + wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C, Cm alkyl, C6-Ci0 aryl; preferably R' is independently selected for each substituent of the functional group from the group consisting of H and C, C3 alkyl;

[0085] n is an integer from 1 to 15, preferably from 1 to 10, in particular from 1 to 5, more particularly from 2 to 5;

[0086] Y is selected from the group -C(O)OR”, -SO3R”, -OP(O)(OR”)2, -P(O)(OR”) 2,- with R” selected from the group consisting of H and C, C3 alkyl; preferably R” is H.

[0087] More preferably, said compound is of formula (Ia) (there)

[0088] in which

[0089] R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and CrC3 alkyl;

[0090] R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H and C, C3 alkyl optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3 R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C, Cm alkyl, C6-Ci0 aryl; preferably R' is independently selected for each substituent of the functional group from the group consisting of H and C1 C3 alkyl;

[0091] n is an integer from 1 to 15, preferably from 1 to 10, in particular from 1 to 5, more particularly from 2 to 5;

[0092] Y is selected from the group -C(O)OR”, -SO3R”, -OP(O)(OR”)2, -P(O)(OR”) 2,- with R” selected from the group consisting of H and C1-C3 alkyl; preferably R” is H.

[0093] In particular, said compound is of formula (Ia) pJ Y TOH '■'Z' ''x- Fr L ^Jjî RL R7 R 0 R3 (Its)

[0094] in which

[0095] R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and CrC3 alkyl;

[0096] R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H, C1-C3 alkyl optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R' in which R' is independently selected for each substituent of the functional group from the group consisting of H, C1-C10 alkyl, C6-C10 aryl; preferably R' is independently selected for each substituent of the functional group from the group consisting of H and C, O alkyl;

[0097] n is an integer from 1 to 15, preferably from 1 to 10, in particular from 1 to 5, more particularly from 2 to 5;

[0098] Y is selected from the group -C(O)OR”, -SO3R”, -OP(O)(OR”)2, -P(O)(OR”) 2,- with R” selected from the group consisting of H and C, C3 alkyl; preferably R” is H.

[0099] More particularly, said compound is of formula (la) R5 R1 v R8 LH i \ / Os ^'L ô R3 (there)

[0100] in which

[0101] R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and CrC3 alkyl, preferably R1, R2, R3, R5, R6, R7 are H;

[0102] R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H, C, C3 alkyl optionally carrying one or more functional groups selected from the group consisting of -OR', -OC(O)R', -C(O)OR', -SO3R', -OP(O)(OR')2, -P(O)(OR)2 in which R' is independently selected for each substituent of the functional group from the group consisting of H, C, Cm alkyl, C6-Ci0 aryl; preferably R' is independently selected for each substituent of the group functional from the group consisting of H and C 1 -C 3 alkyl; in particular R' is H;

[0103] n is an integer from 1 to 5, preferably from 2 to 5;

[0104] Y is selected from the group -C(O)OR”, -SO3R”, -OP(O)(OR”)2, -P(O)(OR”) 2,- with R” selected from the group consisting of H and C, C3 alkyl; preferably R” is H. Process for the preparation of the compound of formula (I)

[0105] According to another aspect, the present invention relates to a process for preparing compounds of formula (I), preferably (Ia) as described in the present application. Said process comprises a step a) of reaction between a compound of formula (IIa) R7 0 R3 (Ha)

[0106] and a thiol compound of formula (IIb) YX-SH in the presence of a base;

[0107] in which

[0108] R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and C1-C5 alkyl;

[0109] X is selected from the group consisting of C1-C18 alkyl, C2-C18 alkenyl, C4-C18 cycloalkenyl, C3-C18 cycloalkyl, C6-C18 aryl, polyalkylene glycol, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO 3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2 and -NR'3+ wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C1-C18 alkyl, C2-C18 alkenyl, C4_Ci8 cycloalkenyl, C3_Ci8 cycloalkyl and C6-Ci8 aryl;

[0110] Y is selected from the group F, Cl, Br, I, -CN, -OR”, -C(O)OR”, -SO3R”, C(O)C1, -O-Si(OR”)3, -Si(R”)3, -OP(O)(OR”)2, -P(O)(OR”)2,-C(O)R”, -C(O)-SR”, -C(O)-NR”2 with R” selected from the group consisting of H, C1-C18 alkyl, C2-C18 alkenyl, C4-C18 cycloalkenyl, C3-C18 cycloalkyl, C6-C18 aryl; to form the compound of formula (I).

[0111] Advantageously, in the compound of formula (IIa), R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and CrC3 alkyl.

[0112] Advantageously, in the compound of formula (IIb), X is selected from the group consisting of C1-C10 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cycloalkyl, C6-C10 aryl, polyalkylene glycol, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', - OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C1-C10 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cy-cloalkyl, C6-C10 aryl; Y is selected from the group F, Cl, Br, I, -CN, -OR”, -C(O)OR”, -SO3R”, C(O)C1, -O-Si(OR”)3, -Si(R”)3, -OP(O)(OR”)2, -P(O)(OR”)2, -C(O)R”, -C(O)-SR” and -C(O)-NR”2 with R” selected from the group consisting of H, C1_C10 alkyl, C2_C10 alkenyl, C4_C10 cycloalkenyl, C3_C10 cycloalkyl and C6-C10 aryl.

[0113] Preferably, in the compound of formula (IIa), R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and CrC3 alkyl; and in the compound of formula (IIb), X is selected from the group consisting of C1-C10 alkyl, C6-C10 aryl, polyalkylene glycol, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C1.Cio alkyl, C2_Ci0 alkenyl, C4_Ci0 cycloalkenyl, C 3_Ci0 cycloalkyl and C6-Ci0 aryl; Y is selected from the group consisting of F, Cl, Br, I, -CN, -OR”, -C(O)OR”, -SO3R”, C(O)C1, -O-Si(OR”)3, -Si(R”)3, -OP(O)(OR”)2, -P(O)(OR”)2,-C(O)R”, -C(O)-SR”, -C(O)-NR”2 with R” selected from the group consisting of H, C1_Ci0 alkyl and C6-Ci0 aryl. .

[0114] More preferably, in the compound of formula (Ha), R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H, CrC3 alkyl; and in the compound of formula (IIb), X is selected from the group consisting of C, C5 alkyl, polyalkylene glycol, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C1-C10 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cycloalkyl and C6-C10 aryl;Y is selected from the group F, Cl, Br, I, -CN, -OR”, -C(O)OR”, -SO3R”, C(O)C1, -O-Si(OR”)3, -Si(R”)3, -OP(O)(OR”)2, -P(O)(OR”)2,-C(O)R”, -C(O)-SR”, -C(O)-NR”2 with R” selected from the group consisting of H, C1-C5 alkyl and C6-C10 aryl. ;

[0115] According to a preferred embodiment, the group X is an alkyl radical of CR8R9 units.

[0116] Thus, according to a preferred embodiment, the thiol compound used in the present process, in step a), is of formula (Ilb') Yins.HLM (ilb4)

[0117] wherein R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H, C1-C10 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cycloalkyl, C6-C10 aryl, polyalkylene glycol, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C, Cm alkyl, C2 C io alkenyl, C4_Ci0 cycloalkenyl, C3_Ci0 cycloalkyl, C6-Ci0 aryl;

[0118] n is an integer from 1 to 15, preferably from 1 to 10, in particular from 1 to 5, more particularly from 2 to 5;

[0119] Y is selected from the group F, Cl, Br, I, -CN, -OR”, -C(O)OR”, -SO3R”, C(O)C1, -O-Si(OR”)3, -Si(R”)3, -OP(O)(OR”)2, -P(O)(OR”)2,-C(O)R”, -C(O)-SR”, -C(O)-NR”2 with R” selected from the group consisting of H, C1-C10 alkyl, C1-C10 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cycloalkyl, C6-C10 aryl; to form the compound of formula (Ia).

[0120] Advantageously, in compound (Ha), R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and CrC3 alkyl; and in compound (Ilb') R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H, C1-C5 alkyl, C3-Cm cycloalkyl, C6-C10 aryl, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'A in which R' is independently selected for each substituent of the functional group from the group consisting of H, C1.Cio alkyl, C2_Ci0 alkenyl, C4_Ci0 cycloalkenyl, C3_Ci0 cycloalkyl and C6-Cio aryl; n is an integer from 1 to 15, preferably from 1 to 10, in particular from 1 to 5, more particularly from 2 to 5; Y is selected from the group -CN, -C(O)OR”, -SO3R”, -OP(O)(OR”)2, -P(O)(OR”)2,- with R” selected from the group consisting of H, C1_Ci0 alkyl, C2_Ci0 alkenyl, C4_Ci0 cycloalkenyl, C3_Ci0 cycloalkyl and C6-Cio aryl. .

[0121] Preferably, in compound (IIa), R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and CrC3 alkyl; and in compound (IIb'), R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H, C1-C5 alkyl, C1-C10 cycloalkyl, C6-C10 aryl, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ in which R' is independently selected for each substituent of the functional group from the group consisting of H, C1-C10 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cycloalkyl, C6-C10 aryl; preferably R' is independently selected for each substituent of the functional group from the group consisting of H and C, O alkyl; n is an integer from 1 to 15, preferably from 1 to 10, in particular from 1 to 5, more in particular from 2 to 5; Y is selected from the group -C(O)OR”, -SO3R”, -OP(O)(OR”)2, -P(O)(OR”)2,- with R” selected from the group consisting of H and C1 C3 alkyl;preferably R” is H. ;

[0122] More preferably, in compound (IIa), R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and C1-C3 alkyl; and in compound (IIb') R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H, C1-C5 alkyl, C6-C10 aryl, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ in which R' is independently selected for each substituent of the functional group from the group consisting of H, C, C|0 alkyl, C6-C10 aryl; preferably R' is independently selected for each substituent of the functional group from the group consisting of H and C1-C3 alkyl;n is an integer from 1 to 15, preferably from 1 to 10, in particular from 1 to 5, more particularly from 2 to 5; Y is selected from the group -C(O)OR”, -SO3R”, -OP(O)(OR”)2, -P(O)(OR”)2,- with R” selected from the group consisting of H and C1-C3 alkyl; preferably R' ' is H.;

[0123] In particular, in said compound is of formula (IIa) R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and CrC3 alkyl; and in said compound (IIb') R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H and C, C5 alkyl optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR' 2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C1-C10 alkyl, C6 -C10 aryl; preferably R' is independently selected for each substituent of the functional group from the group consisting of H and C, C3 alkyl; n is an integer from 1 to 15, preferably from 1 to 10, in particular from 1 to 5, more particularly from 2 to 5; Y is selected from the group -C(O)OR”, -SO3R”, -OP(O)(OR”)2, -P(O)(OR”)2,- with R” selected from the group consisting of H and C1 C3 alkyl; preferably R” is H.

[0124] More particularly, in said compound is of formula (IIa), R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and CrC3 alkyl; and in said compound (IIb') R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H, C, C3 alkyl optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R' in which R' is independently selected for each substituent of the functional group from the group consisting of H, C1.Cio alkyl, C6-Ci0 aryl; preferably R' is independently selected for each substituent of the functional group from the group consisting of H and C1-C3 alkyl; n is an integer from 1 to 15, preferably from 1 to 10, in particular from 1 to 5, more in particular from 2 to 5; Y is selected from the group -C(O)OR”, -SO3R”, -OP(O)(OR”)2, -P(O)(OR”)2,- with R” selected from the group consisting of H and C1-C3 alkyl; preferably R” is H. .

[0125] Preferably, in said compound is of formula (IIa), R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and CrC3 alkyl, preferably R1, R2, R3, R5, R6, R7 are H; and in said compound (IIb'), R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H, C1-C3 alkyl optionally carrying one or more functional groups selected from the group consisting of -OR', -OC(O)R', -C(O)OR', -SO3R', -OP(O)(OR')2, -P(O)(OR) 2 in which R' is independently selected for each substituent of the functional group from the group consisting of H, C, Cm alkyl, C6-Ci0 aryl; preferably R' is independently selected for each substituent of the functional group from the group consisting of H and C, C3 alkyl; in particular R' is H;

[0126] n is an integer from 1 to 5, preferably from 2 to 5; Y is selected from the group -C(O)OR”, -SO3R”, -OP(O)(OR”)2, -P(O)(OR”)2,- with R” selected from the group consisting of H and C1-C3 alkyl; preferably R' ' is H.

[0127] As mentioned above, step a) is carried out in the presence of a base.

[0128] Preferably, said base is selected from the group consisting of LiOH, NaOH, KOH, CsOH, RbOH, Mg(OH)2, Ca(OH)2, N(CmH2m+i)3 with m being an integer from 1 to 10, N,N-Diisopropylethylamine, morpholine, pyridine, pyrrolidine, Piperidine, piperazine, 4-Methylmorpholine, N,N-Düsopropylethylamine, l,8-Diazabicyclo(5.4.0)undec-7-ene, triethylenediamine, 6-(Dibutylamino)-l,8-diazabicyclo[5.4.0]undec-7-ene, l,8-Diazabicyclo[5.4.0]undec-7-ene bound to polystyrene, l,5,7-Triazabicyclo[4.4.0]dec-5-ene, 7-Methyl-l,5,7-triazabicyclo[4.4.0]dec-5-ene, 1,1,3,3-Tetramethylguanidine, 2-tert-Butyl-1,1,3,3-tetramethylguanidine, l,5,7-Triazabicyclo[4.4.0]dec-5-ene bound to polystyrene, 1,4-Diazabicyclo [2.2.2] octane, Quinuclidine, 1,5-Diazabicyclo(4.3.0)non-5-ene, 2,6-Di-tert-butylpyridine, 2,8,9-Trimethyl-2,5,8,9-tetraza-l-phosphabicyclo[3.3.3]undecane, Cyclodi-phosphazane, Lithium diisopropylamide, sodium diisopropylamide, potassium diiso-propylamide, magnésium diisopropylamide, calcium diisopropylamide, rubidium diisopropylamide, lithium bis(trimethylsilyl)amide, sodium bis(trimethylsilyl)amide, potassium bis(trimethylsilyl)amide, magnésium bis(trimethylsilyl)amide, calcium bis(trimethylsilyl)amide, rubidium bis(trimethylsilyl)amide, lithium tetramethylpi-peridide, sodium tetramethylpiperidide, potassium tetramethylpiperidide, magnésium tetramethylpiperidide, calcium tetramethylpiperidide, rubidium tetramethylpiperidide, [18-crown-6]-KHF2, KHF2, N,N’-diisopropylimidazonium, bifluorure, tetrabuty-lammonium, N(CmH2m+i)4 OH- avec m étant un entier de 1 à 10.In particular, said base is selected from the group consisting of LiOH, NaOH, KOH, CsOH, RbOH, Mg(OH)2, Ca(OH)2, N(CmH2m+i)3 with m being an integer from 1 to 5, N,N-Diisopropylethylamine, morpholine, pyridine, pyrrolidine, Piperidine, piperazine, 4-Methylmorpholine, N,N-Diisopropylethylamine, l,8-Diazabicyclo(5.4.0)undec-7-ene, triethylenediamine, 6-(Dibutylamino)-l,8-diazabicyclo[5.4.0]undec-7-ene, l,8-Diazabicyclo[5.4.0]undec-7-ene bound to polystyrene. Said base may be used in excess, at stoichiometry or in deficiency relative to the quantity of thiol compound (IIb) or (IIb'). Thus, in step a), the molar content of said base is advantageously greater than 1 mol per 100 mol of said thiol compound (IIb) or (IIb'), preferably greater than 5 mol, more preferably greater than 10 mol, in particular greater than 50 mol, more particularly greater than 100 mol per 100 mol of said compound (IIb) or (IIb').Preferably, in step a), the molar content of said base is advantageously greater than 150 mol, preferably greater than 200 mol, more preferably greater than 250 mol, in particular greater than 300 mol per 100 mol of said thiol compound (IIb) or (IIb').

[0129] In step a), the molar content of said base may also be from 1 mol to 500 mol, advantageously from 50 to 500 mol, preferably from 100 to 500 mol, more preferably from 200 to 500 mol, in particular from 250 mol to 500 mol, more particularly of 300 mol per 100 mol of said thiol compound (Ilb) or (Ilb').

[0130] Preferably, step a) is carried out without solvent.

[0131] The temperature at which step a) is carried out is not particularly limiting. Step a) can be carried out at a temperature of 15°C to 90°C, preferably 20°C to 40°C.

[0132] Step a) can be carried out under ambient atmosphere or under controlled atmosphere. Step a) can be carried out under controlled atmosphere to limit the formation of a disulfide compound resulting from the reaction on itself of the thiol compound (IIb) or (IIb'). Thus, step a) can be carried out under atmosphere containing less than 10 mol% of oxygen, preferably step a) is carried out under nitrogen atmosphere. PO polymer

[0133] According to another aspect, the present invention provides a polymer PO comprising monomeric units derived from a fluorinated monomer MO comprising a C=C double bond and at least one fluorine atom and monomeric units derived from the compound of formula (I) according to the present invention. Preferably, said polymer PO comprises monomeric units derived from a fluorinated monomer MO comprising a C=C double bond and at least one fluorine atom and monomeric units derived from the compound of formula (Ia) according to the present invention.

[0134] According to a preferred embodiment, the molar content of monomeric units derived from the compound of formula (I) or (Ia) according to the present invention in the polymer PO is between 0.01 and 10 mol%, advantageously between 0.05 and 9 mol%, preferably between 0.1 and 8 mol%, more preferably between 0.1 and 7 mol%, in particular between 0.1 and 6 mol%, more particularly between 0.1 and 5 mol%, preferably between 0.1 and 4 mol%, preferably between 0.1 and 3 mol%, particularly preferably between 0.1 and 2 mol%.

[0135] Said fluorinated monomer MO is preferably selected from the group consisting of vinylidene fluoride, vinyl fluoride, trifluoroethylene, chlorotrifluoroethylene, 1,2-difluoroethylene, tetrafluoroethylene, hexafluoropropylene, perfluoro(alkyl vinyl) ethers, perfluoro(1,3-dioxole), perfluoro(2,2-dimethyl-1,3-dioxole), the monomer of formula CF2=CFOCF2CF(CF3)OCF2CF2X in which X is SO2F, CO2H, CH2OH, CH2OCN or CH2OPO3H, the monomer of formula CF2=CFOCF2CF2SO2F, the monomer of formula F(CF2)nCH2OCF=CF2 in which n is 1, 2, 3, 4 or 5, the monomer of formula R1CH2OCF=CF2 in which R1 is hydrogen or F(CF2)m and m is 1, 2, 3 or 4, the monomer of formula R2OCF=CH2 in which R2 is F(CF2)p and p is 1, 2, 3 or 4, perfluorobutyl ethylene, trifluoropropene, tetrafluoropropene, hexafluoroisobutylene, perfluorobutylethylene, pentafluoropropene, bromotrifluoroethylene, chlorofluoroethylene, chlorotrifluoropropene, 2-trifluoromethyl-3,3,3-trifluoro-l-propene.

[0136] Preferably, said fluorinated monomer MO is selected from the group consisting of vinylidene fluoride, vinyl fluoride, trifluoroethylene, chlorotrifluoroethylene, 1,2-difluoroethylene, tetrafluoroethylene, hexafluoropropylene, perfluoro(alkyl vinyl) ethers, perfluoro(1,3-dioxole), perfluoro(2,2-dimethyl-1,3-dioxole), the monomer of formula CF2=CFOCF2CF(CF3)OCF2CF2X in which X is SO2F, CO2H, CH2OH, CH2OCN or CH2OPO3H, the monomer of formula CF2=CFOCF2CF2SO2F, the monomer of formula F(CF2)nCH2OCF=CF2 in which n is 1, 2, 3, 4 or 5, the monomer of formula R'CH2OCF=CF2 in which R1 is hydrogen or F(CF2)m and m is 1, 2, 3 or 4, the monomer of formula R2OCF=CH2 in which R2 is F(CF2)p and p is 1, 2, 3 or 4.

[0137] More preferably, said fluorinated monomer MO is selected from the group consisting of vinylidene fluoride, vinyl fluoride, trifluoroethylene, chlorotrifluoroethylene, 1,2-difluoroethylene, tetrafluoroethylene, hexafluoropropylene.

[0138] In particular, said fluorinated monomer MO is vinylidene fluoride.

[0139] Said polymer PO may also contain monomeric units derived from a monomer MO'. Said monomer MO' is copolymerizable with said fluorinated monomer MO or the compound (I) according to the invention to form a polymer PO comprising monomeric units derived from the fluorinated monomer MO, monomeric units derived from the compound of formula (I) according to the present invention and monomeric units derived from the monomer MO'.

[0140] According to a preferred embodiment, said monomer MO' is different from the monomer MO and is selected from the group consisting of vinylidene fluoride, vinyl fluoride, trifluoroethylene, chlorotrifluoroethylene, 1,2-difluoroethylene, tetrafluoroethylene, hexafluoropropylene, perfluoro(alkyl vinyl) ethers, perfluoro(1,3-dioxole), perfluoro(2,2-dimethyl-1,3-dioxole), the monomer of formula CF2=CFOCF2CF(CF3)OCF2CF2X in which X is SO2F, CO2H, CH2OH, CH2OCN or CH2OPO3H, the monomer of formula CF2=CFOCF2CF2SO2F, the monomer of formula F(CF2)nCH2OCF=CF2 in which n is 1, 2, 3, 4 or 5, the monomer of formula R'CH2OCF=CF2 in which R1 is hydrogen or F(CF2)m and m is 1, 2, 3 or 4, the monomer of formula R2OCF=CH2 in which R2 is F(CF2)p and p is 1, 2, 3 or 4, perfluorobutyl ethylene, trifluoropropene, tetrafluoropropene, hexafluoroisobutylene, perfluorobutylethylene, pentafluoropropene, bromotrifluoroethylene, chlorofluoroethylene,chlorotrifluoropropene, 2-trifluoromethyl-3,3,3-trifluoro-l-propene. ,

[0141] According to a preferred embodiment, said fluorinated monomer MO is vinylidene fluoride and said monomer MO' is selected from the group consisting of vinyl fluoride, trifluoroethylene, chlorotrifluoroethylene, 1,2-difluoroethylene, tetrafluoroethylene, hexafluoropropylene, perfluoro(alkyl vinyl) ethers, perfluoro(1,3-dioxole), perfluoro(2,2-dimethyl- 1,3 -dioxole), the monomer of formula CF2=CFOCF2CF(CF3 )OCF2CF2X in which X is SO2F, CO2H, CH2OH, CH2OCN or CH2OPO3H, the monomer of formula CF2=CFOCF2CF2SO2F, the monomer of formula F(CF2)nCH2 OCF=CF2 in which n is 1, 2, 3, 4 or 5, the monomer of formula R'CH2OCF=CF2 in which R1 is hydrogen or F(CF2)m and m is 1, 2, 3 or 4, the monomer of formula R2OCF=CH2 in which R2 is F(CF2)p and p is 1, 2, 3 or 4, perfluorobutyl ethylene, trifluoropropene, tetrafluoropropene, hexafluoroisobutylene, perfluorobutyl ethylene, pentafluoropropene, bromotrifluoroethylene, chlorofluoroethylene, chlorotrifluoropropene, 2-trifluoromethyl-3,3,3-trifluoro-l-propene.

[0142] According to a particular embodiment, said fluorinated monomer MO is vinylidene fluoride and said monomer MO' is selected from the group consisting of trifluoroethylene, chlorotrifluoroethylene, tetrafluoroethylene, hexafluoropropylene, perfluoro(alkyl vinyl) ethers, perfluoro(1,3-dioxole), perfluoro(2,2-dimethyl-1,3-dioxole), the monomer of formula CF2=CFOCF2CF(CF3)OCF2CF2X in which X is SO2F, CO2H, CH2OH, CH2OCN or CH2OPO3H, the monomer of formula CF2 =CFOCF2CF2SO2F, the monomer of formula F(CF2)nCH2OCF=CF2 in which n is 1, 2, 3, 4 or 5, the monomer of formula R1CH2OCF=CF2 in which R1 is hydrogen or F(CF2)m and m is 1, 2, 3 or 4, the monomer of formula R2OCF=CH2 in which R2 is F(CF2)p and p is 1, 2, 3 or 4, perfluorobutylethylene.

[0143] According to a particular embodiment, said fluorinated monomer MO is vinylidene fluoride and said monomer MO' is selected from the group consisting of trifluoroethylene, chlorotrifluoroethylene, tetrafluoroethylene, hexafluoropropylene and perfluoro(alkyl vinyl) ethers. The perfluoro(alkyl vinyl) ether is for example perfluoro(methyl vinyl) ether, perfluoro(ethyl vinyl) ether, perfluoro(propyl vinyl) ether or perfluoro(butyl vinyl) ether.

[0144] Said polymer PO may also contain monomeric units derived from a monomer MO”. Said monomer MO” is copolymerizable with said fluorinated monomer MO or the compound (I) according to the invention to form a polymer PO comprising monomeric units derived from the fluorinated monomer MO, monomeric units derived from the compound of formula (I) according to the present invention and monomeric units derived from the monomer MO”.

[0145] Optionally, said monomer MO” is also copolymerizable with said monomer MO' to form a polymer PO comprising monomeric units derived from the fluorinated monomer MO, monomeric units derived from the monomer MO', monomeric units derived from the monomer MO” and monomeric units derived from the compound of formula (I) according to the present invention.

[0146] According to one embodiment, said monomer MO” is of formula (la) R*R2C=C(R3 )C(O)R in which the substituents R1, R2 and R3 are, independently of each other others, selected from the group consisting of H and C1-C5 alkyl; R is selected from the group consisting of -NHC(CH3)2CH2C(O)CH3 or -OR' with R' selected from the group consisting of H and CrCi8 alkyl optionally substituted by one or more groups -OH, -CO2H, -SO3H, -PO3H, -OC(O)R”, -C(O)OR” or a five or ten membered heterocycle comprising at least one nitrogen atom in its ring chain; R” being selected from the group consisting of C1-C6 alkyl or C6 -Ci2 aryl optionally substituted by one or more groups -OH, -CO2H, -so3h, -po3h.

[0147] Said monomer MO” may therefore be of formula (la) R'R2C=C(R3)C(O)R in which the substituents R1, R2 and R3 are, independently of each other, selected from the group consisting of H and C1-C5 alkyl; R is selected from the group consisting of -NHC(CH3)2CH2C(O)CH3 or -OR' with R' selected from the group consisting of H and C1-C8 alkyl optionally substituted by one or more groups -OH, -CO2H, -SO3H, -PO3H, -OC(O)R”, -C(O)OR” or a five- or ten-membered heterocycle comprising at least one nitrogen atom in its cyclic chain; R” being selected from the group consisting of C1-C6 alkyl or C6-C12 aryl optionally substituted by one or more groups -OH, -CO2H, -SO3 H, -PO3H. Said heterocycle may be saturated or unsaturated or aromatic. Said heterocycle may be monocyclic or bicyclic.Said heterocycle may be a pyrrole, pyrrolidine, pyridine, piperidine, pyrimidine, pyrazine, 1,4-dihydropyridine, indole, oxindole, isatin, quinoline, isoquinoline, quinazoline, imidazoline, pyra-zolidine, 2-pyrrolidone, deltalactam, succinimide, 2-imidazolidinone, 4-imidazolidinone ring. Said heterocycle may be substituted by one or more C1-C5 alkyl groups. As mentioned above, the C1-C8 alkyl is optionally substituted by said heterocycle. The latter may be linked to the alkyl chain by the nitrogen atom or any other atom forming the heterocycle. Preferably the heterocycle is 2-pyrrolidone, delta-lactam, succinimide, 2-imidazolidinone, 4-imidazolidinone.Advantageously, said monomer MO” may be of formula (Ia) R'R2C=C(R3)C(O)R in which the substituents R1, R2 and R3 are independently of each other selected from the group consisting of H and C1-C5 alkyl; R is -OR' with R' selected from the group consisting of H and C1-C5 alkyl optionally substituted by one or more groups -OH, -CO2H, -SO3H, -PO3H, -OC(O)R”, -C(O)O-R' ' or a five- or ten-membered heterocycle comprising at least one nitrogen atom in its cyclic chain; R” being selected from the group consisting of C1-C6 alkyl or C6-C12 aryl optionally substituted by one or more -OH, -CO2H, -SO3H, -PO3H group(s). Preferably, the heterocycle is as defined above, in particular the heterocycle is 2-pyrrolidone, deltalactam, succinimide, 2-imidazolidinone, 4-imidazolidinone. Said substituent R' may be selected from . the group consisting of H, methyl, ethyl, propyl, n-butyl, isobutyl, t-butyl, n-dodecyl, amyl, isoamyl, hexyl, 2-ethylhexyl, lauryl, n-octyl, hydroxyethyl, hy-droxybutyl, hydroxypropyl, 2-pyrrolidone, deltalactam, succinimide, 2-imidazolidinone, 4-imidazolidinone ethyl substituted with a ureido group. Preferably, said monomer MO” is of formula (Ia) R'R2C=C(R3)C(O)R in which the substituents R1 and R2 are H; R3 is H or CH3; R is -OR' with R' selected from the group consisting of H and CrCi8 alkyl optionally substituted by one or more groups -OH, -CO2H, -SO3H, -PO3H, -OC(O)R”, -C(O)OR”; R” being selected from the group consisting of C1-C6 alkyl or C6-Ci2 aryl optionally substituted by one or more groups -OH, -CO2H, -SO3H, -PO3H.More preferably, said monomer MO” is of formula (la) R'R2C=C(R3)C(O)R in which the substituents R1 and R2 are H; R3 is H or CH3; R is -OR' with R' selected from the group consisting of H and C1-C15 alkyl optionally substituted by one or more groups -OH, -CO2H, -SO3H, -PO3H, -OC(O)R”, -C(O)OR”; R” being selected from the group consisting of C1-C6 alkyl or C6-C12 aryl optionally substituted by one or more groups -OH, -CO2H, -SO3 H, -PO3H. In particular, said monomer MO” is of formula (la) R'R2C=C(R3 )C(O)R in which the substituents R1 and R2 are H; R3 is H or CH3; R is -OR' with R' selected from the group consisting of H and C1-C10 alkyl optionally substituted by one or more groups -OH, -CO2H, -SO3H, -PO3H, -OC(O)R”, -C(O)OR”; R” being selected from the group consisting of C1-C6 alkyl or C6-C12 aryl optionally substituted by one or more groups -OH, -CO2H, -SO3 H, -PO3H.More particularly, said monomer MO” may be acrylic acid, methyl acrylate, ethyl acrylate, propyl acrylate, n-butyl acrylate, isobutyl acrylate, t-butyl acrylate, n-dodecyl acrylate, amyl acrylate, isoamyl acrylate, hexyl acrylate, 2-ethylhexyl acrylate, diacetone acrylamide, lauryl acrylate, n-octyl acrylate, methacrylate. hydroxypropyl, hydroxybutyl methacrylate, hydroxyethyl methacrylate, hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxybutyl acrylate, methyl acrylic acid, methyl methacrylate, ethyl methacrylate, propyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, t-butyl methacrylate, n-dodecyl methacrylate, amyl methacrylate, isoamyl methacrylate, hexyl methacrylate, 2-ethylhexyl methacrylate, lauryl methacrylate, n-octyl methacrylate, ureido methacrylate, monomers of formula CH2=CH(CO2CH2CH2CO2H), CH2=CH(CO2CH2CH2 -OC(O)-CH2CH2CO2H), CH2=CH(CO2CH2CH2CH2-OC(O)-CH2CH2CO2H), ch2 =CH(CO2CH(CH3)CH2-OC(O)-CH2CH2CO2H),CH2=CH(CO2CH2CH2-OC(O)-C6H4 CO2H), CH2=CH(CO2CH2CH2CH2CH(CO2H)CH2CH2CO2H); and mixtures of these. Among these, said monomer MO” with an alkyl group having 1 to 8 carbon atoms is preferred, and an alkyl group having 1 to 5 carbon atoms is more preferable. Said fluoropolymer PO may comprise one or more monomeric units derived from a monomer MO” as defined herein, for example MO” may be a mixture of methyl methacrylate, acrylic acid and methacrylic acid and the polymer PO may thus comprise, for example, monomeric units derived from methyl methacrylate, methacrylic acid and acrylic acid. Composition

[0148] According to another aspect, the present invention relates to a composition comprising a fluorinated polymer PI and a polymer P2 comprising monomeric units derived from the compound of formula (I).

[0149] Said fluorinated polymer PI may be a homopolymer derived from the fluorinated monomer Ml or a polymer derived from the fluorinated monomer Ml, from the monomer Ml' and / or from the monomer Ml”.

[0150] Thus, said fluorinated polymer PI comprises monomeric units derived from a fluorinated monomer Ml selected from the group consisting of vinyl fluoride, vinylidene fluoride, trifluoroethylene, chlorotrifluoroethylene, 1,2-difluoroethylene, tetrafluoroethylene, hexafluoropropylene, perfluoro(alkyl vinyl) ethers such as perfluoro(methyl vinyl) ether (PMVE), perfluoro(ethyl vinyl) ether (PEVE) and perfluoro(propyl vinyl) ether (PPVE); perfluoro(1,3-dioxole); perfluoro(2,2-dimethyl-1,3-dioxole); the product of formula CF2=CFOCF2CF(CF3)OCF2 CF2X in which X is SO2F, CO2H, CH2OH, CH2OCN or CH2OPO3H; the product of formula CF2=CFOCF2CF2SO2F; the product of formula F(CF2)nCH2OCF=CF2in which n is 1, 2, 3, 4 or 5; the product of formula R1CH2OCF=CF2 in which R1 is hydrogen or F(CF2)m and m is 1, 2, 3 or 4; the product of formula R2OCF=CH2 in which R2 is F(CF2)p and p is 1, 2, 3 or 4; perfluorobutyl ethylene (PFBE); trifluoropropene, tetrafluoropropene, hexafluoroisobutylene, perfluorobutylethylene, pentafluoropropene, bromotrifluoroethylene, chlorofluoroethylene, chlorotrifluoropropene and 2-trifluoromethyl-3,3,3-trifluoro-l-propene or a mixture thereof.Preferably, said fluorinated monomer Ml is selected from the group consisting of vinylidene fluoride, vinyl fluoride, trifluoroethylene, chlorotrifluoroethylene, 1,2-difluoroethylene, tetrafluoroethylene, hexafluoropropylene, perfluoro(alkyl vinyl) ethers, perfluoro(1,3-dioxole), perfluoro(2,2-dimethyl-1,3-dioxole), the monomer of formula CF2=CFOCF2CF(CF3)OCF2CF2X in which X is SO2F, CO2H, CH2OH, CH2OCN or CH2OPO3H, the monomer of formula CF2=CFOCF2CF2SO2F, the monomer of formula F(CF2)nCH2OCF=CF2 in which n is 1, 2, 3, 4 or 5, the monomer of formula R1CH2OCF=CF2 in which R1 is hydrogen or F(CF2)m and m is 1, 2, 3 or 4, the monomer of formula R2OCF=CH2 in which R2 is F(CF2)p. and p is 1, 2, 3 or 4. More preferably, said fluorinated monomer Ml is selected from the group consisting of vinylidene fluoride, vinyl fluoride, trifluoroethylene, chlorotrifluoroethylene, 1,2-difluoroethylene, tetrafluoroethylene, hexafluoropropylene. In particular, said fluorinated monomer Ml is vinylidene fluoride.

[0151] According to a preferred embodiment, said fluorinated polymer PI may be a homopolymer of vinylidene fluoride.

[0152] According to another preferred embodiment, the fluoropolymer PI also comprises monomeric units derived from a monomer Ml' or a monomer Ml” as described below or a mixture of the two.

[0153] According to a preferred embodiment, the fluoropolymer PI also comprises monomeric units derived from a monomer Ml' selected from the group consisting of vinyl fluoride; trifluoroethylene (VF3); chlorotrifluoroethylene (CTFE); 1,2-difluoroethylene; tetrafluoroethylene (TFE); hexafluoropropylene (HFP); perfluoro(alkyl vinyl) ethers such as perfluoro(methyl vinyl) ether (PMVE), perfluoro(ethyl vinyl) ether (PEVE) and perfluoro(propyl vinyl) ether (PPVE); perfluoro(1,3-dioxole); perfluoro(2,2-dimethyl-1,3-dioxole) (PDD); the product of formula CF2=CFOCF2CF(CF 3)OCF2CF2X in which X is SO2F, CO2H, CH2OH, CH2OCN or CH2OPO3H; the product of formula CF2=CFOCF2CF2SO2F; the product of formula F(CF2)nCH2OCF=CF 2 in which n is 1, 2, 3, 4 or 5; the product of formula R1CH2OCF=CF2 in which R1 is hydrogen or F(CF2)m and m is 1, 2, 3 or 4; the product of formula R2 OCF=CH2 in which R2 is F(CF2)p and p is 1, 2, 3 or 4;perfluorobutyl ethylene (PFBE); trifluoropropene, tetrafluoropropene, hexafluoroisobutylene, perfluorobutylethylene, pentafluoropropene, bromotrifluoroethylene, chlorofluoroethylene, chlorotrifluoropropene and 2-trifluoromethyl-3,3,3-trifluoro-l-propene or a mixture thereof; or optionally monomeric units derived from a monomer M1” of formula (Ia) R'R2C=C(R3)C(O)R in which the substituents R1, R2 and R3 are, independently of each other, selected from the group consisting of H and C1-C5 alkyl; R is selected from the group consisting of -NHC(CH3)2CH2C(O)CH3 or -OR' with R' selected from the group consisting of H and C1-C5 alkyl optionally substituted by one or more groups -OH, -CO2H, -SO3H, -PO3H, -OC(O)R”, -C(O)OR” or a five- or ten-membered heterocycle comprising at least one nitrogen atom in its ring chain;R” being selected from the group consisting of C1-C6 alkyl or C6-C12 aryl optionally substituted by one or more -OH, -CO2H, -SO3H, -PO3H group(s); or a mixture of monomeric units derived from said monomer Ml” and Ml'.;

[0154] Preferably, said monomer Ml' is selected from the group consisting of vinyl fluoride, trifluoroethylene, chlorotrifluoroethylene, 1,2-difluoroethylene, tetrafluoroethylene, hexafluoropropylene, perfluoro(alkyl vinyl) ethers, perfluoro(1,3-dioxole), perfluoro(2,2-dimethyl-1,3-dioxole), the monomer of formula CF2=CFOCF2CF(CF3)OCF2CF2X in which X is SO2F, CO2H, CH2OH, CH2OCN or CH2OPO3H, the monomer of formula CF2=CFOCF2CF2SO2F, the monomer of formula F(CF2)nCH2OCF=CF2 in which n is 1, 2, 3, 4 or 5, the monomer of formula R'CH2OCF=CF2 in which R1 is hydrogen or F(CF2)m and m is 1, 2, 3 or 4, the monomer of formula R2OCF=CH2 in which R2 is F(CF2)p and p is 1, 2, 3 or 4, perfluorobutyl ethylene, trifluoropropene, tetrafluoropropene, hexafluoroisobutylene, perfluorobutylethylene, pentafluoropropene, bromotrifluoroethylene, chlorofluoroethylene, chlorotrifluoropropene, 2-trifluoromethyl-3,3,3-trifluoro-l-propene.More preferably, said monomer Ml' is selected from the group consisting of trifluoroethylene, chlorotrifluoroethylene, tetrafluoroethylene, hexafluoropropylene, perfluoro(alkyl vinyl) ethers, perfluoro(1,3-dioxole), perfluoro(2,2-dimethyl-1,3-dioxole), the monomer of formula CF2=CFOCF2CF(CF3)OCF2CF2X in which X is SO2F, CO2H, CH2OH, CH2OCN or CH2OPO3H, the monomer of formula CF2=CFOCF2CF2SO2F, the monomer of formula F(CF2)nCH2 OCF=CF2 in which n is 1, 2, 3, 4 or 5, the monomer of formula R1CH2OCF=CF2 in which R1 is hydrogen or F(CF2)m and m is 1, 2, 3 or 4, the monomer of formula R2OCF=CH2 in which R2 is F(CF2)p and p is 1, 2, 3 or 4, perfluorobutylethylene. .

[0155] Preferably, said monomer M1” is of formula (Ia) R'R2C=C(R3)C(O)R in which the substituents R1, R2 and R3 are, independently of each other, selected from the group consisting of H and C1-C5 alkyl; R is selected from the group consisting of -NHC(CH3)2CH2C(O)CH3 or -OR' with R' selected from the group consisting of H and C1-C8 alkyl optionally substituted by one or more -OH, -CO2H, -SO3H, -PO3H, -OC(O)R”, -C(O)OR” groups or a five- or ten-membered heterocycle comprising at least one nitrogen atom in its ring chain; R” being selected from the group consisting of C1-C6 alkyl or C6-C12 aryl optionally substituted by one or more -OH groups, -CO2H, -SO3 H, -PO3H. Said heterocycle can be saturated or unsaturated or aromatic. Said heterocycle can be monocyclic or bicyclic.Said heterocycle may be a pyrrole, pyrrolidine, pyridine, piperidine, pyrimidine, pyrazine, 1,4-dihydropyridine, indole, oxindole, isatin, quinoline, isoquinoline, quinazoline, imidazoline, pyra-zolidine, 2-pyrrolidone, deltalactam, succinimide, 2-imidazolidinone, 4-imidazolidinone ring. Said heterocycle may be substituted by one or more C1-C5 alkyl groups. As mentioned above, the C1-C18 alkyl is optionally substituted by said heterocycle. The latter may be linked to the alkyl chain by . the nitrogen atom or any other atom forming the heterocycle. Preferably the heterocycle is 2-pyrrolidone, delta-lactam, succinimide, 2-imidazolidinone, 4-imidazolidinone. More preferably, said monomer M1” may be of formula (la) R'R2C=C(R3 )C(O)R in which the substituents R1, R2 and R3 are independently of each other selected from the group consisting of H and C1-C5 alkyl; R is -OR' with R' selected from the group consisting of H and C1-C5 alkyl optionally substituted by one or more groups -OH, -CO2H, -SO3H, -PO3H, -OC(O)R”, -C(O)O-R' ' or a five- or ten-membered heterocycle comprising at least one nitrogen atom in its ring chain; R” being selected from the group consisting of C1-C6 alkyl or C6-C12 aryl optionally substituted by one or more group(s) -OH, -CO2H, -SO3H, -PO3H.Preferably, the heterocycle is as defined above, in particular the heterocycle is 2-pyrrolidone, deltalactam, succinimide, 2-imidazolidinone, 4-imidazolidinone. Said substituent R' may be selected from the group consisting of H, methyl, ethyl, propyl, n-butyl, isobutyl, t-butyl, n-dodecyl, amyl, isoamyl, hexyl, 2-ethylhexyl, lauryl, n-octyl, hydroxyethyl, hydroxybutyl, hydroxypropyl, 2-pyrrolidone, deltalactam, succinimide, 2-imidazolidinone, 4-imidazolidinone ethyl substituted with a ureido group.In particular, said monomer M1” is of formula (la) R'R2C=C(R3)C(O)R in which the substituents R1 and R2 are H; R3 is H or CH3; R is -OR' with R' selected from the group consisting of H and C1-C18 alkyl optionally substituted by one or more groups -OH, -CO2H, -SO3H, -PO3H, -OC(O)R”, -C(O)OR”; R” being selected from the group consisting of C1-C6 alkyl or C6-C12 aryl optionally substituted by one or more groups -OH, -CO2H, -SO3H, -PO3H. More preferably, said monomer M1” is of formula (la) R'R2C=C(R3)C(O)R in which the substituents R1 and R2 are H; R3 is H or CH3; R is -OR' with R' selected from the group consisting of H and C1-C15 alkyl optionally substituted by one or more groups -OH, -CO2H, -SO3H, -PO3H, -OC(O)R”, -C(O)OR”; R” being selected from the group consisting of C1-C6 alkyl or C6-C12 aryl optionally substituted by one or more groups -OH, -CO2H, -SO3 H, -PO3H.More particularly, said monomer M1” is of formula (la) R'R2C=C(R 3)C(O)R in which the substituents R1 and R2 are H; R3 is H or CH3; R is -OR' with R' selected from the group consisting of H and C1-C10 alkyl optionally substituted by one or more groups -OH, -CO2H, -SO3H, -PO3H, -OC(O)R”, -C(O)OR”; R” being selected from the group consisting of C1-C6 alkyl or C6-C12 aryl optionally substituted by one or more groups -OH, -CO2H, -SO3 H, -PO3H. Thus, said monomer Ml” may be acrylic acid, methyl acrylate, ethyl acrylate, propyl acrylate, n-butyl acrylate, isobutyl acrylate, t-butyl acrylate, n-dodecyl acrylate, amyl acrylate, acrylate. isoamyl, hexyl acrylate, 2-ethylhexyl acrylate, diacetone acrylamide, lauryl acrylate, n-octyl acrylate, hydroxypropyl methacrylate, hydroxybutyl methacrylate, hydroxyethyl methacrylate, hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxybutyl acrylate, methyl acrylic acid, methyl methacrylate, ethyl methacrylate, propyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, t-butyl methacrylate, n-dodecyl methacrylate, amyl methacrylate, isoamyl methacrylate, hexyl methacrylate, 2-ethylhexyl methacrylate, lauryl methacrylate, n-octyl methacrylate, ureido methacrylate, monomers of formula CH2=CH(CO2CH2CH2CO2H), CH2=CH(CO2CH2CH2 -OC(O)-CH2CH2CO2H), CH2=CH(CO2CH2CH2CH2-OC(O)-CH2CH2CO2H), ch2 =CH(CO2CH(CH3)CH2-OC(O)-CH2CH2CO2H),CH2=CH(CO2CH2CH2-OC(O)-C6H4 CO2H), CH2=CH(CO2CH2CH2CH2CH(CO2H)CH2CH2CO2H);and mixtures thereof. Among these, said monomer Ml” with an alkyl group having 1 to 8 carbon atoms is preferred, and an alkyl group having 1 to 5 carbon atoms is more preferable. Said fluoropolymer PI may comprise one or more monomeric units derived from a monomer Ml” as defined herein, for example Ml” may be a mixture of methyl methacrylate, acrylic acid and methacrylic acid and the fluoropolymer PI may thus comprise, for example, monomeric units derived from methyl methacrylate, methacrylic acid and acrylic acid. ;

[0156] Generally, the fluoropolymer PI preferably contains at least 50 mol% vinylidene fluoride, advantageously at least 60 mol% vinylidene fluoride, preferably at least 70 mol% vinylidene fluoride. The monomeric units derived from the monomer Ml' or Ml” may be present in a content of 1 to 50%, advantageously 2 to 30% by weight relative to the weight of said fluoropolymer PI.

[0157] According to a preferred embodiment, the fluoropolymer PI is a copolymer of vinylidene fluoride (VDF) and hexafluoropropylene (HFP) (P(VDF-HFP)), having a mass content of hexafluoropropylene monomer units of 2 to 30%, advantageously of 2 to 25%, preferably of 2 to 20%, preferably of 4 to 15% by weight relative to the weight of said fluoropolymer PI. According to another embodiment, the fluoropolymer PI is a copolymer of vinylidene fluoride (VDF) and hexafluoropropylene (HFP) (P(VDF-HFP)), having a mass content of hexafluoropropylene monomer units of 10 to 30%, advantageously of 10 to 25% by weight relative to the weight of said fluoropolymer PI.

[0158] According to one embodiment, the fluoropolymer PI is a copolymer of vinylidene fluoride and tetrafluoroethylene (TFE).

[0159] According to one embodiment, the fluorinated polymer PI is a fluoride copolymer vinylidene and chlorotrifluoroethylene (CTFE).

[0160] According to one embodiment, the fluoropolymer PI is a VDF-TFE-HFP terpolymer. According to one embodiment, the fluoropolymer PI is a VDF-TrFE-TFE terpolymer (TrFE being trifluoroethylene). In these terpolymers, the mass content of VDF is at least 10%, the comonomers being present in variable proportions.

[0161] According to a particular embodiment, the fluoropolymer PI comprises monomeric units carrying at least one of the following functions: carboxylic acid, carboxylic acid anhydride, carboxylic acid esters, epoxy groups (such as glycidyl), amide, hydroxyl, carbonyl, mercapto, sulfide, oxazoline, phenolic, ester, ether, siloxane, sulfonic, sulfuric, phosphoric, phosphonic. The function is introduced by a chemical reaction which may be grafting, or a copolymerization of the vinylidene fluoride (VDF) monomer with a monomer carrying at least one of said functional groups and a vinyl function capable of copolymerizing with vinylidene fluoride, according to techniques well known to those skilled in the art. Examples of monomers carrying an acid function and copolymerizable with vinylidene fluoride are listed among the monomer Ml”.The content of functional groups in said fluorinated polymer PI is at least 0.01 mol%, preferably at least 0.1 mol%, and at most 15 mol%, preferably at most 10 mol%.

[0162] Thus, said fluorinated polymer PI may be, for example, a copolymer of vinylidene fluoride and a monomer Ml” selected from the group consisting of acrylic acid, methacrylic acid, methyl (meth)acrylate, ethyl (meth)acrylate, hydroxyethyl(meth)acrylate, hydroxybutyl(meth)acrylate, hydroxypropyl(meth)acrylate, hydroxyethylhexyl(meth)acrylate and acryloyloxy propylsuccinate. Preferably, the content of monomer Ml” in said polymer PI is from 0.01% to 5 mol%. In this embodiment, at least 40% of the units derived from the monomer Ml” are distributed between two vinylidene fluoride units.

[0163] The fluoropolymer PI preferably has a high molecular weight. By high molecular weight, as used herein, is meant a fluoropolymer PI having a melt viscosity greater than 100 Pa.s, preferably greater than 500 Pa.s, more preferably greater than 1000 Pa.s, according to ASTM method D-3835 measured at 232°C and 100 sec-1.

[0164] According to a preferred embodiment, said fluoropolymer PI is obtained in the form of a latex and the particle size of said fluoropolymer PI is from 10 nm to 800 nm. The particle size is determined by laser granulometry. A particle size analyzer of the Malvem INSITEC System type is used for the measurement. This is carried out in a dry process by laser diffraction on a powder with a focal length of 100 mm.

[0165] According to a preferred embodiment, said fluoropolymer PI has a solids content of between 10% and 55%, preferably between 10% and 50%, in particular between 10 and 40%.

[0166] Said polymer P2 comprises monomeric units derived from the compound of formula (I) according to the present invention. Said polymer P2 may also comprise monomeric units derived from a monomer M2, M2', M2” or a mixture thereof.Said monomer M2 may be selected from the group consisting of vinylidene fluoride, vinyl fluoride, trifluoroethylene, chlorotrifluoroethylene, 1,2-difluoroethylene, tetrafluoroethylene, hexafluoropropylene, perfluoro(alkyl vinyl) ethers, perfluoro(1,3-dioxole), perfluoro(2,2-dimethyl-1,3-dioxole), the monomer of formula CF2=CFOCF2CF(CF3)OCF2CF2X in which X is SO2F, CO2H, CH2OH, CH2OCN or CH2OPO3H, the monomer of formula CF2=CFOCF2CF2SO2F, the monomer of formula F(CF2)nCH2OCF=CF2 in which n is 1, 2, 3, 4 or 5, the monomer of formula R'CH2OCF=CF2 in which R1 is hydrogen or F(CF2)m and m is 1, 2, 3 or 4, the monomer of formula R2OCF=CH2 in which R2 is F(CF2)p and p is 1, 2, 3 or 4, perfluorobutyl ethylene, trifluoropropene, tetrafluoropropene, hexafluoroisobutylene, perfluorobutylethylene, pentafluoropropene, bromotrifluoroethylene, chlorofluoroethylene, chlorotrifluoropropene, 2-trifluoromethyl-3,3,3-trifluoro-l-propene. .

[0167] Preferably, said fluorinated monomer M2 is selected from the group consisting of vinylidene fluoride, vinyl fluoride, trifluoroethylene, chlorotrifluoroethylene, 1,2-difluoroethylene, tetrafluoroethylene, hexafluoropropylene, perfluoro(alkyl vinyl) ethers, perfluoro(1,3-dioxole), perfluoro(2,2-dimethyl-1,3-dioxole), the monomer of formula CF2=CFOCF2CF(CF3)OCF2CF2X in which X is SO2F, CO2H, CH2OH, CH2OCN or CH2OPO3H, the monomer of formula CF2=CFOCF2CF2SO2F, the monomer of formula F(CF2)nCH2OCF=CF2 in which n is 1, 2, 3, 4 or 5, the monomer of formula R'CH2OCF=CF2 in which R1 is hydrogen or F(CF2)m and m is 1, 2, 3 or 4, the monomer of formula R2OCF=CH2 in which R2 is F(CF2)p and p is 1, 2, 3 or 4.

[0168] More preferably, said fluorinated monomer M2 is selected from the group consisting of vinylidene fluoride, vinyl fluoride, trifluoroethylene, chlorotrifluoroethylene, 1,2-difluoroethylene, tetrafluoroethylene, hexafluoropropylene.

[0169] In particular, said fluorinated monomer M2 is vinylidene fluoride.

[0170] Said monomer M2' is copolymerizable with said fluorinated monomer M2 or the compound (I) according to the invention. According to a preferred embodiment, said monomer M2' is different from monomer M2 and is selected from the group consisting of vinylidene fluoride, vinyl fluoride, trifluoroethylene, chlorotrifluoroethylene, 1,2-difluoroethylene, tetrafluoroethylene, hexafluoropropylene, perfluoro(alkyl vinyl) ethers, perfluoro(1,3-dioxole), perfluoro(2,2-dimethyl-1,3-dioxole), the monomer of formula CF2=CFOCF2CF(CF3)OCF2CF2X in which X is SO2F, CO2H, CH2OH, CH2OCN or CH2OPO3H, the monomer of formula CF2=CFOCF2CF2SO2F, the monomer of formula F(CF2)nCH2OCF=CF2 in which n is 1, 2, 3, 4 or 5, the monomer of formula R'CH2OCF=CF2 in which R1 is hydrogen or F(CF2)m and m is 1, 2, 3 or 4, the monomer of formula R2OCF=CH2 in which R2 is F(CF2)p and p is 1, 2, 3 or 4, perfluorobutyl ethylene, trifluoropropene, tetrafluoropropene, hexafluoroisobutylene, perfluorobutylethylene, pentafluoropropene, bromotrifluoroethylene, chlorofluoroethylene, chlorotrifluoropropene, 2-trifluoromethyl-3,3,3-trifluoro-l-propene.

[0171] According to a preferred embodiment, said fluorinated monomer M2 is vinylidene fluoride and said monomer M2' is selected from the group consisting of vinyl fluoride, trifluoroethylene, chlorotrifluoroethylene, 1,2-difluoroethylene, tetrafluoroethylene, hexafluoropropylene, perfluoro(alkyl vinyl) ethers, perfluoro(1,3-dioxole), perfluoro(2,2-dimethyl-1,3-dioxole), the monomer of formula CF2=CFOCF2CF(CF3)OCF2CF2X in which X is SO2F, CO2H, CH2OH, CH2OCN or CH2OPO3H, the monomer of formula CF2=CFOCF2CF2SO2F, the monomer of formula F(CF2)nCH2 OCF=CF2 in which n is 1, 2, 3, 4 or 5, the monomer of formula R1CH2OCF=CF2 in which R1 is hydrogen or F(CF2)m and m is 1, 2, 3 or 4, the monomer of formula R2OCF=CH2 in which R2 is F(CF2)p and p is 1, 2, 3 or 4, perfluorobutyl ethylene, trifluoropropene, tetrafluoropropene, hexafluoroisobutylene, perfluorobutylethylene, pentafluoropropene, bromotrifluoroethylene, chlorofluoroethylene,chlorotrifluoropropene, 2-trifluoromethyl-3,3,3-trifluoro-l-propene. ,

[0172] According to a particular embodiment, said fluorinated monomer M2 is vinylidene fluoride and said monomer M2' is selected from the group consisting of trifluoroethylene, chlorotrifluoroethylene, tetrafluoroethylene, hexafluoropropylene, perfluoro(alkyl vinyl) ethers, perfluoro(1,3-dioxole), perfluoro(2,2-dimethyl-1,3-dioxole), the monomer of formula CF2=CFOCF2CF(CF3)OCF2CF2X in which X is SO2F, CO2H, CH2OH, CH2OCN or CH2OPO3H, the monomer of formula CF2 =CFOCF2CF2SO2F, the monomer of formula F(CF2)nCH2OCF=CF2 in which n is 1, 2, 3, 4 or 5, the monomer of formula R1CH2OCF=CF2 in which R1 is hydrogen or F(CF2)m and m is 1, 2, 3 or 4, the monomer of formula R2OCF=CH2 in which R2 is F(CF2)p and p is 1, 2, 3 or 4, perfluorobutylethylene.

[0173] According to a particular embodiment, said fluorinated monomer M2 is vinylidene fluoride and said monomer M2' is selected from the group consisting of trifluoroethylene, chlorotrifluoroethylene, tetrafluoroethylene, hexafluoropropylene and perfluoro(alkyl vinyl) ethers. Perfluoro(alkyl vinyl) ether is for example perfluoro(methyl vinyl) ether, perfluoro(ethyl vinyl) ether, perfluoro(propyl vinyl) ether or perfluoro(butyl vinyl) ether.

[0174] Said monomer M2” is copolymerizable with said fluorinated monomer M2 or the compound (I) according to the invention. Optionally, said monomer M2” is also copolymerizable with said monomer M2'. According to one embodiment, said monomer M2” is of formula (Ia) R'R2C=C(R3)C(O)R in which the substituents R1, R2 and R3 are, independently of each other, selected from the group consisting of H and C1-C5 alkyl; R is selected from the group consisting of -NHC(CH3)2CH2C(O)CH3 or -OR' with R' selected from the group consisting of H and C1-C18 alkyl optionally substituted by one or more -OH, -CO2H, -SO3H, -PO3H, -OC(O)R”, -C(O)OR” groups or a five- or ten-membered heterocycle comprising at least one nitrogen atom in its ring chain; R” being selected from the group consisting of C1-C6 alkyl or C6-C12 aryl optionally substituted by one or more -OH groups, -CO2H, -SO3H, -PO3H.

[0175] Said monomer M2” may therefore be of formula (la) R'R2C=C(R3)C(O)R in which the substituents R1, R2 and R3 are, independently of each other, selected from the group consisting of H and C1-C5 alkyl; R is selected from the group consisting of -NHC(CH3)2CH2C(O)CH3 or -OR' with R' selected from the group consisting of H and C1-C18 alkyl optionally substituted by one or more -OH, -CO2H, -SO3H, -PO3H, -OC(O)R”, -C(O)OR” group or a five- or ten-membered heterocycle comprising at least one nitrogen atom in its ring chain; R” being selected from the group consisting of C1-C6 alkyl or C6-C12 aryl optionally substituted by one or more -OH group, -CO2H, -SO3 H, -PO3H. Said heterocycle may be saturated or unsaturated or aromatic. Said heterocycle may be monocyclic or bicyclic.Said heterocycle may be a pyrrole, pyrrolidine, pyridine, piperidine, pyrimidine, pyrazine, 1,4-dihydropyridine, indole, oxindole, isatin, quinoline, isoquinoline, quinazoline, imidazoline, pyra-zolidine, 2-pyrrolidone, deltalactam, succinimide, 2-imidazolidinone, 4-imidazolidinone ring. Said heterocycle may be substituted by one or more C1-C5 alkyl groups. As mentioned above, the C1-C8 alkyl is optionally substituted by said heterocycle. The latter may be linked to the alkyl chain by the nitrogen atom or any other atom forming the heterocycle. Preferably the heterocycle is 2-pyrrolidone, delta-lactam, succinimide, 2-imidazolidinone, 4-imidazolidinone.Advantageously, said monomer M2” may be of formula (la) R'R2C=C(R3)C(O)R in which the substituents R1, R2 and R3 are independently of each other selected from the group consisting of H and C1-C5 alkyl; R is -OR' with R' selected from the group consisting of H and C1-C18 alkyl optionally substituted by one or more group(s) -OH, -CO2H, -SO3H, -PO3H, -OC(O)R”, - . C(O)O-R' ' or a five- or ten-membered heterocycle comprising at least one nitrogen atom in its cyclic chain; R” being selected from the group consisting of C1-C6 alkyl or C6-C12 aryl optionally substituted by one or more group(s) -OH, -CO2H, -SO3H, -PO3H. Preferably, the heterocycle is as defined above, in particular the heterocycle is 2-pyrrolidone, deltalactam, succinimide, 2-imidazolidinone, 4-imidazolidinone. Said substituent R' may be selected from the group consisting of H, methyl, ethyl, propyl, n-butyl, isobutyl, t-butyl, n-dodecyl, amyl, isoamyl, hexyl, 2-ethylhexyl, lauryl, n-octyl, hydroxyethyl, hydroxybutyl, hydroxypropyl, 2-pyrrolidone, deltalactam, succinimide, 2-imidazolidinone, 4-imidazolidinone ethyl substituted by a ureido group.Preferably, said monomer M2” is of formula (Ia) R'R2C=C(R3)C(O)R in which the substituents R1 and R2 are H; R3 is H or CH3; R is -OR' with R' selected from the group consisting of H and CrCi8 alkyl optionally substituted by one or more groups -OH, -CO2H, -SO3H, -PO3H, -OC(O)R”, -C(O)OR”; R” being selected from the group consisting of C1-C6 alkyl or C6-Ci2 aryl optionally substituted by one or more groups -OH, -CO2H, -SO3H, -PO3H. More preferably, said monomer M2” is of formula (la) R'R2C=C(R3)C(O)R in which the substituents R1 and R2 are H; R3 is H or CH3; R is -OR' with R' selected from the group consisting of H and C1-C15 alkyl optionally substituted by one or more groups -OH, -CO2H, -SO3H, -PO3H, -OC(O)R”, -C(O)OR”; R” being selected from the group consisting of C1-C6 alkyl or C6-C12 aryl optionally substituted by one or more groups -OH, -CO2H, -SO3 H, -PO3H.In particular, said monomer M2” is of formula (la) R'R2C=C(R3 )C(O)R in which the substituents R1 and R2 are H; R3 is H or CH3; R is -OR' with R' selected from the group consisting of H and C1-C10 alkyl optionally substituted by one or more groups -OH, -CO2H, -SO3H, -PO3H, -OC(O)R”, -C(O)OR”; R” being selected from the group consisting of C1-C6 alkyl or C6-C12 aryl optionally substituted by one or more groups -OH, -CO2H, -SO3 H, -PO3H.More particularly, said monomer M2” may be acrylic acid, methyl acrylate, ethyl acrylate, propyl acrylate, n-butyl acrylate, isobutyl acrylate, t-butyl acrylate, n-dodecyl acrylate, amyl acrylate, isoamyl acrylate, hexyl acrylate, 2-ethylhexyl acrylate, diacetone acrylamide, lauryl acrylate, n-octyl acrylate, hydroxypropyl methacrylate, hydroxybutyl methacrylate, hydroxyethyl methacrylate, hydroxyethyl acrylate, hydroxypropyl acrylate, hydroxybutyl acrylate, methyl acrylic acid, methyl methacrylate, ethyl methacrylate, propyl methacrylate, methacrylate n-butyl, isobutyl methacrylate, t-butyl methacrylate, n-dodecyl methacrylate, amyl methacrylate, . isoamyl methacrylate, hexyl methacrylate, 2-ethylhexyl methacrylate, lauryl methacrylate, n-octyl methacrylate, ureido methacrylate, monomers of formula CH2=CH(CO2CH2CH2CO2H), CH2=CH(CO2CH2CH2 -OC(O)-CH2CH2CO2H), CH2=CH(CO2CH2CH2CH2-OC(O)-CH2CH2CO2H), ch2 =CH(CO2CH(CH3)CH2-OC(O)-CH2CH2CO2H),CH2=CH(CO2CH2CH2-OC(O)-C6H4 CO2H), CH2=CH(CO2CH2CH2CH2CH(CO2H)CH2CH2CO2H); and mixtures thereof. Among these, said monomer M2” with an alkyl group having 1 to 8 carbon atoms is preferred, and an alkyl group having 1 to 5 carbon atoms is more preferable.Said fluoropolymer P2 may comprise one or more monomeric units derived from a monomer M2” as defined herein, for example M2” may be a mixture of methyl methacrylate, acrylic acid and methacrylic acid and the polymer P2 may thus comprise for example monomeric units derived from methyl methacrylate, methacrylic acid and acrylic acid. Applications

[0176] Said PO polymer according to the present invention or said composition according to the present invention can be used in various applications. Thus, said PO polymer according to the present invention or said composition according to the present invention can be used as a binder for an electrode (cathode or anode) or as a coating for a separator.

[0177] Said PO polymer according to the present invention or said composition according to the present invention can be used as a binder for an electrode. Thus, according to another aspect, the present invention provides an electrode composition comprising said PO polymer according to the present invention or said composition according to the present invention, an active material and optionally a conductive agent.

[0178] In a preferred embodiment, the electrode composition has the following mass composition:

[0179] a. 50% to 99.95% active material, preferably 50% to 99%,

[0180] b. 25% to 0% conductive agent, preferably 25% to 0.5%,

[0181] c. 25% to 0.05% of said PO polymer according to the present invention or said com position according to the present invention, preferably 25% to 0.5%,

[0182] d. 0% to 5% of at least one additive selected from the group consisting of a plasticizer, an ionic liquid, a dispersing agent for a conductive additive, and a flow aid;

[0183] the sum of all these percentages being 100%.

[0184] The conductive agents in the electrode are composed of one or more materials that can enhance conductivity. Some examples include carbon blacks such as acetylene black, Ketjen black; carbon fibers, such as carbon nanotube, carbon nanofiber, carbon fiber by vapor phase growth; metal powders such as SUS powder, and aluminum powder.

[0185] The active materials in the electrode compositions are materials that are capable of storing and releasing lithium ions.

[0186] In a preferred embodiment, said electrode is a negative electrode. In particular, for a negative electrode, said active material is selected from the group consisting of a lithium alloy, lithium metal, a metal oxide, a carbon material such as graphite or hard carbon, silicon, a silicon alloy and Li4Ti5O12*. The shape of the negative electrode active material is not particularly limited but is preferably particulate.

[0187] In another preferred embodiment, said electrode is a positive electrode. Preferably, for a positive electrode, said active material is selected from the group consisting of LiCoO2, Li(Ni, Co, AI)O2, Li(i+x)NiaMnbCoc (x represents a real number of 0 or more, a = 0.9, 0.8, 0.6, 0.5, or 1 / 3, b = 0.05, 0.1, 0.2, 0.3, or 1 / 3, c = 0.05, 0.1, 0.2, or 1 / 3), LiNiO2, LiMn2O4, LiCoMnO4, Li3NiMn3O3, Li3Fe2(PO4)3, Li3 V2(PO4)3, a Li Mn spinel substituted by a different element having a composition represented by Lii+xMn2-x_yMyO4, M representing at least one metal selected from Al, Mg, Co, Fe, Ni, and Zn, x and y independently representing a real number between 0 and 2, lithium titanate LixTiOy - x and y independently representing a real number between 0 and 2, and a lithium metal phosphate having a composition represented by LiMPO4, M representing Fe, Mn, Co, or Ni.The shape of the positive electrode active material is not particularly limited but is preferably particulate. In addition, the surface of each of the materials described above can be coated. The coating material is not particularly limited as long as it has lithium ion conductivity and contains a material capable of being maintained as a coating layer on the surface of the active material. Examples of the coating material include LiNbO3, Li4Ti50i2, and Li3PO4. .

[0188] Said electrode composition may be deposited on at least one face of a current collector to form said electrode. This deposition may be carried out in the presence of an organic solvent, water, a mixture of both or by a solvent-free process. Said organic solvent may be selected from the group consisting of n-methylpyrrolidone (NMP), dimethylsulfoxide (DMSO), N,N-dimethylformamide (DMF), triethylphosphite (TEP), acetone, cyclopentanone, tetrahydrofuran, methyl ethylketone (MEK), methyl isobutyl ketone (MiBK), ethyl acetate (EA), butyl acetate (BA), ethylene carbonate (EC), propylene carbonate (PC), dimethyl carbonate (DMC), diethyl carbonate (DEC), ethyl methyl carbonate (EMC), gamma-butyrolactone and N-butylpyrrolidone; and mixtures thereof.

[0189] According to another aspect of the present invention, a Li-ion battery is provided. Preferred Reliably, the Li-ion battery comprises a positive electrode, a negative electrode and a separator, at least one electrode being an electrode according to the present invention. Said battery preferably comprises an electrolyte salt selected from the group consisting of LiCF3SO3, LiPF6, LiC104, LiBF4, LiB(C2O4)2, LiN(SO2F)2, LiN(SO2CF3)2, LiN(SO2C2F3)2, LiN(SO2C2F5)2, LiN(SO2F)(SO2CF3), LiN(SO2F)(SO2C2F5), LiN(SO2 CF3)(SO2C2F5),LiAsF6, LiBF2C2O4, LiNO3, LiPF3(CF2CF3)3, LiBETI (Lithium bis(pentafluoroethanesulfonyl)imide), LiTDI (Lithium 4,5-dicyano-2-trifluoromethylimidazole), or a mixture thereof.

[0190] According to another aspect of the present invention, said PO polymer according to the present invention or said composition according to the present invention can be used as a coating in a separator arranged between two electrodes. Said separator according to the present invention comprises a coating comprising, preferably consisting of, said PO polymer according to the present invention or said composition according to the present invention, optionally arranged on one or both faces of a porous support. In this case, the coating is used to coat the support of a separator, on at least one face, in the form of a monolayer or multilayers. There is no particular limitation in the choice of the support which is coated with the coating of the invention, as long as it is a porous substrate having pores.When it comprises several layers, the coating as described in the present invention is arranged on the external face of the support, that is to say on the face which will first be in contact with the electrolytic composition used in the battery. Advantageously, the application of the coating on the support is done by aqueous or solvent means. The porous substrate can take the form of a membrane or a fibrous fabric. When the porous substrate is fibrous, it can be a non-woven web forming a porous web, such as a web obtained by direct spinning or melt-blowing (of the "spunbond" or "melt-blown" type) or electro-spinning.Examples of porous substrates useful in the invention as a support include, but are not limited to: polyolefins, polyethylene terephthalate, polybutylene terephthalate, polyester, polyacetal, polyamide, polycarbonate, polyimide, polyetheretherketone, polyethersulfone, polyphenylene oxide, polyphenylene sulfide, polyethylene naphthalene or mixtures thereof. However, other heat-resistant engineering plastics may be used without particular limitation. Nonwoven materials made of natural and synthetic materials may also be used as the substrate of the separator. The porous substrate generally has a thickness of 1 to 50 μm, and are typically membranes obtained by extrusion and stretching (wet or dry process) or cast nonwovens. The porous substrate preferably has a porosity of between 5% and 95%.The average pore size (diameter) is preferably between 0.001 and 50 pm, more preferably between 0.01 and 10 pm. The support. can also be aluminum or polymer-coated aluminum.

[0191] In addition to said composition, the separator coating may contain inorganic particles that serve to form micropores in the coating (the interstices between inorganic particles). The addition of inorganic particles may also contribute to heat resistance or improve wettability. According to one embodiment, said coating comprises from 50 to 99 percent by weight of inorganic particles, based on the weight of the coating. These inorganic particles must be electrochemically stable (not subject to oxidation and / or reduction in the range of voltages used). In addition, powdered inorganic materials preferably have high ionic conductivity. Low density materials are preferred over higher density materials, since the weight of the produced battery can be reduced. The dielectric constant is preferably equal to or greater than 5.According to one embodiment, said inorganic particles are chosen from the group consisting of: BaTiO3, Pb(Zr,Ti)O3, Pbi xLax ZryO3 (0 <x<l, 0<y<l), PbMg3Nb2 / 3O3, PbTiO3, HfO, HfO2, SrTiO3, SnO2, CeO2, MgO, NiO, CaO, ZnO, Y2O3, bohémite (y-AlO(OH)), A12O3, TiO2, SiC, ZrO2, silicate de bore, BaSO4, nano-argiles, ou leurs mélanges. Le revêtement pour séparateur peut éventuellement comprendre de 0 à 15 % en poids sur la base du polymère, et de préférence 0,1 à 10 % en poids d'additifs, choisis parmi les épaississants, les agents d'ajustement du pH, les agents anti-sédimentation, les tensioactifs, les agents mouillants, les charges, les agents anti-mousse et les promoteurs d'adhésion fugitive ou non. Les charges mentionnées ici dans les additifs sont différentes des particules inorganiques mentionnées ci-dessus. .

[0192] According to another aspect of the present invention, a Li-ion battery is provided. Preferably, the Li-ion battery comprises a positive electrode, a negative electrode and said separator according to the present invention. Said battery preferably comprises an electrolyte salt selected from the group consisting of LiCF3SO3, LiPF6, LiClO4, LiBF 4, LiB(C2O4)2, LiN(SO2F)2, LiN(SO2CF3)2, LiN(SO2C2F3)2, LiN(SO2C2F5)2, LiN(SO2 F)(SO2CF3), LiN(SO2F)(SO2C2F5), LiN(SO2CF3)(SO2C2F5), LiAsF6, LiBF2C2O4, LiNO3, LiPF3(CF2CF3)3, LiBETI (Lithium bis(pentafluoroethanesulfonyl)imide), LiTDI (Lithium 4,5-dicyano-2-trifluoromethylimidazole), or a mixture thereof.

[0193] According to another aspect of the present invention, said PO polymer according to the present invention or said composition according to the present invention can be used in the preparation of a conductive polymer, a solid electrolyte for fuel cells, paints, cables, wires, anti-corrosion equipment for the chemical industry, coatings for construction or architecture. The coating can be a hydrophilic, hydrophobic or UV-absorbing coating. Generally, said PO polymer according to the present invention or said composition according to the present invention have applications in the field of semiconductors and electronics, oil and gas, automotive, cabling, architecture and construction, aerospace, in the chemical industry where the PO polymer according to the present invention or said composition according to the present invention can be used in production processes, in storage or transport equipment, as an anti-corrosion agent. Examples

[0194] Example 1: preparation of a compound of formula fl)

[0195] In a round-bottomed flask, 7 ml of triethylamine (0.05 mol) were mixed with 1.44 ml of 3-mercaptopropionic acid (0.01 mol), a cloudy and inhomogeneous solution was obtained. To this mixture, 2 ml of vinyl methacrylate (0.01 mol) were added, the reaction medium changed from turbid to a clear phase. After 24 h of stirring, 5 ml of acetic acid and 20 ml of water were poured into the medium, then extraction with 30 ml of ethyl acetate was carried out. The organic medium was separated and dried with MgCl2. Then, the solvent was removed under vacuum at 35°C. The final product of formula CH2=CH-OC(O)CH(CH3)CH2SCH2CH2CO2H was isolated as a clear liquid. The product obtained is soluble in water, acetone, DMSO, ethanol, dichloromethane or ethyl acetate. The product is characterized by 'H NMR (300 MHz, DMSO d6) ô 7.21 (dd 1H), 4.8 (dd 1H), 4.5 (dd, 1H), 2.85 -2.73 (m, 2H), 2.72 - 2.62 (m, 3H), 2.48 (t, J= 7.0 Hz, 2H), 1.22-1.14 (m, 3H). . Example 2: preparation of a PO polymer

[0196] A 250 ml high-pressure reactor was flushed with nitrogen. 80 ml of DMSO containing 0.4 g of KPS and 0.4 g of the compound prepared in Example 1 were added to the reactor. After that, it was filled at room temperature (22°C) with 22 bars of VDF under stirring in order to saturate the solution well and heated to 90°C. An exotherm occurred and the pressure was decreased. When no consumption of VF2 was observed, the reactor was cooled and opened. After precipitation and washing with water, the obtained polymer was characterized by NMR. 1H NMR (300 MHz, DMSO) δ 6.35 (tt, J = 54.9, 4.6 Hz, 1H), 5.51 (m, 1H), 4.10 (t, J = 14.3 Hz, 1H), 3.94 (t, J = 13.7 Hz, 1H), 2.98 - 2.78 (m, 214H), 2.26 (t, J = 14.9 Hz, 34H), 1.78 (t, J = 19.7 Hz, 3H), 1.13 (d, J = 6.2 Hz, 3H), 0.95 (t, J = 7.4 Hz, 1H). The incorporation rate of the compound prepared in Example 1 into the polymer is 0.7 mol% characterized by the shift to 5.51 ppm.

Claims

Claims

1. Compound of formula (I) R? R1 .a ox A 7 "X" vy F æ R6 Ô R3 (I) wherein R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and C1-C5 alkyl; X is selected from the group consisting of C1-C18 alkyl, C2-C18 alkenyl, C4-C18 cycloalkenyl, C3-C18 cycloalkyl, C6-C18 aryl, polyalkylene glycol, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C1-C18 alkyl, C2-C18 alkenyl, C4-C18 cycloalkenyl, C3_Ci8 cycloalkyl and C 6-Ci8 aryl; Y is selected from the group F, Cl, Br, I, -CN, -OR”, -C(O)OR”, -SO3R”, C(O)C1, -O-Si(OR”)3, -Si(R”)3, -OP(O)(OR”)2, -P(O)(OR”)2, -C(O)R”, -C(O)-SR”, -C(O)-NR”2 with R” selected from the group consisting of H, C1_C18 alkyl, C2_C18 alkenyl, C4_C18 cycloalkenyl, C3_C18 cycloalkyl and C6-C18 aryl.

2. Compound of formula (I) according to the preceding claim, characterized in that R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H and CrC3 alkyl; X is selected from the group consisting of C1-C10 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cycloalkyl, C6-C10 aryl, polyalkylene glycol, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C1-C10 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3_Ci0 cycloalkyl and C 6-Cio aryl; Y is selected from the group F, Cl, Br, I, -CN, -OR”, -C(O)OR”, -SO3R”, C(O)C1, -O-Si(OR”)3, -Si(R”)3, -OP(O)(OR”)2, -P(O)(OR”)2, -C(O)R”, -C(O)-SR”, -C(O)-NR”2 with R” selected from the group consisting of H, C1-C10 alkyl, C1-C10 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cycloalkyl and C6-C10 aryl.

3. Compound according to any one of the preceding claims, characterized in that it is of formula (Ia) R5 R1 in which R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H, C1-C3 alkyl; R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H, C1-C10 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cycloalkyl, C6-C10 aryl, polyalkylene glycol, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3 R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ in which R' is independently selected for each substituent of the functional group from the group consisting of H, C1-C10 alkyl, C2_Ci0 alkenyl, C4_Ci0 cycloalkenyl, C3_Ci0 cycloalkyl and C6-Ci0 aryl; n is an integer from 1 to 15, preferably from 1 to 10, in particular from 1 to 5, more particularly from 2 to 5; Y is selected from the group F, Cl, Br, I, -CN, -OR”, -C(O)OR”, -SO3R”, C(O)C1, -O-Si(OR”)3, -Si(R”)3, -OP(O)(OR”)2, -P(O)(OR”)2, -C(O)R”, -C(O)-SR”, -C(O)-NR”2 with R” selected from the group consisting of H, C1-C10 alkyl, C1-C10 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cycloalkyl and C6-C10 aryl.

4. Compound according to any one of the preceding claims, characterized in that it is of formula (Ia) R5 R1 X* A ..X _ i "Al 'A 'A x -A ' R* R7 Ô R3 (la) wherein R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H, C1-C3 alkyl; R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H, C A 5 alkyl, C A 10 cycloalkyl, C 6-C 10 aryl, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3 , -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C A 10 alkyl, C A 10 alkenyl, C 4-C 10 cycloalkenyl, C 3-C 10 cycloalkyl and C6-Ci0 aryl; n is an integer from 1 to 15, preferably from 1 to 10, in particular from 1 to 5, more particularly from 2 to 5; Y is selected from the group -CN, -C(O)OR”, -SO3R”, -OP(O)(OR”)2, -P(O)(OR”)2,- with R” selected from the group consisting of H, C A10 alkyl, C2_Ci0 alkenyl, C4.C10 cycloalkenyl, C3 Cio cycloalkyl and C6-Ci0 aryl.

5. Compound according to any one of the preceding claims, characterized in that it is of formula (Ia) R 5 R 1 SX s, XAA , Xi XVX' X (Its) in which R1, R2, R3, R5, R6, R7 are independently selected from the group consisting of H, CrC3 alkyl; R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H, CA 5 alkyl, CA10 cycloalkyl, C6-Ci0 aryl, optionally carrying a or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3 , -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C1-C10 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cycloalkyl, C6-C10 aryl; preferably R' is independently selected for each substituent of the functional group from the group consisting of H and C1-C3 alkyl; n is an integer from 1 to 15, preferably from 1 to 10, in particular from 1 to 5, more particularly from 2 to 5; Y is selected from the group -C(O)OR”, -SO3R”, -OP(O)(OR”)2, -P(O)(OR”)2,- with R” selected from the group consisting of H, C1-C3 alkyl; preferably R' ' is H.

6. A process for preparing the compound according to any one of the preceding claims comprising a step a) of reaction between a compound of formula (IIa) R5 R1 (Ha) and a thiol compound of formula (IIb) YX-SH in the presence of a base; in which R1, R2, R3, R5, R6, R7 are independently of each other selected from the group consisting of H, C1-C5 alkyl; X is selected from the group consisting of C1-C18 alkyl, C2-C18 alkenyl, C4-C18 cycloalkenyl, C3-C18 cycloalkyl, C6-C18 aryl, polyalkylene glycol, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ wherein R' is independently selected for each substituent of the functional group from the group consisting of H, C1-C18 alkyl, C2-C18 alkenyl, C4-C18 cycloalkenyl, C3_Ci8 cycloalkyl, C6 -Cj8 aryl; Y is selected from the group F, Cl, Br, I, -CN, -OR”, -C(O)OR”, -SO3R”, C(O)C1, -O-Si(OR”)3, -Si(R”)3, -OP(O)(OR”)2, -P(O)(OR”)2, -C(O)R”, -C(O)-SR”, -C(O)-NR”2 with R” selected from the group consisting of H, C1_C18 alkyl, C2_C18 alkenyl, C4_C18 cy-cloalkenyl, C3_C[8 cycloalkyl, C6-C18 aryl; to form the compound of formula (I).

7. Process according to the preceding claim, characterized in that the thiol compound is of formula (IIb') yrr?i « ' > 44' H LM tiibi R8 and R9 are, independently of each other and independently for each of the n units, selected from the group consisting of H, C1-C10 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cycloalkyl, C6-C10 aryl, polyalkylene glycol, optionally carrying one or more functional groups selected from the group consisting of -F, -OR', -OC(O)R', -C(O)OR', -CN, -NR'2, -O-Si(OR')3, -Si(R')3, -SO3 R', -OP(O)(OR')2, -P(O)(OR)2, -C(O)R', -C(O)-S-R', -C(O)-NR'2, -NR'3+ in which R' is independently selected for each substituent of the functional group from the group consisting of H, C1-C10 alkyl, C2_C10 alkenyl, C4_C10 cycloalkenyl, C3_Ci0 cycloalkyl, C6-Cio aryl; n is an integer from 1 to 15, preferably from 1 to 10, in particular from 1 to 5, more particularly from 2 to 5; Y is selected from the group F, Cl, Br, I, -CN, -OR”, -C(O)OR”, -SO3R”, C(O)C1, -O-Si(OR”)3, -Si(R”)3, -OP(O)(OR”)2, -P(O)(OR”)2, -C(O)R”, -C(O)-SR”, -C(O)-NR”2 with R” selected from the group consisting of H, C1-C10 alkyl, C1-C10 alkyl, C2-C10 alkenyl, C4-C10 cycloalkenyl, C3-C10 cycloalkyl, C6-C10 aryl; to form the compound of formula (Ia).

8. A method according to any one of claims 6 or 7 characterized in that said base is selected from the group consisting of LiOH, NaOH, KOH, CsOH, RbOH, Mg(OH)2, Ca(OH)2, N(CmH2m+1)3 with m being an integer from 1 to 10, N,N-Diisopropylethylamine, morpholine, pyridine, pyrrolidine, Piperidine, piperazine, 4-Methylmorpholine, N,N-Diisopropylethylamine, l,8-Diazabicyclo(5.4.0)undec-7-ene, triethylenediamine, 6-(Dibutylamino)-l,8-diazabicyclo[5.4.0]undec-7-ene, l,8-Diazabicyclo[5.4.0]undec-7-ene bound to polystyrene, l,5,7-Triazabicyclo[4.4.0]dec-5-ene, 7-Methyl-1,5,7-triazabicyclo [4.4.0]dec-5-ene,

9.

10.

11.

12.

13.

14.

15.

16. 1,1,3,3-Tetramethylguanidine, 2-tert-Butyl-1,1,3,3-tetramethylguanidine, l,5,7-Triazabicyclo[4.4.0]dec-5-ene bound to polystyrene, 1,4-Diazabicyclo[2.2.2]octane, Quinuclidine, l,5-Diazabicyclo(4.3.0)non-5-ene, 2,6-Di-tert-butylpyridine, 2,8,9-Trimethyl-2,5,8,9-tetraza-1 -phosphabicyclo[3.3.3]undecane, Cy-clodiphosphazane, Lithium diisopropylamide, sodium diisopropylamide, potassium diisopropylamide, magnésium diisopropylamide, calcium diisopropylamide, rubidium diisopropylamide, lithium bis(trimethylsilyl)amide, sodium bis(trimethylsilyl)amide, potassium bis(trimethylsilyl)amide, magnésium bis(trimethylsilyl)amide, calcium bis(trimethylsilyl)amide, rubidium bis(trimethylsilyl)amide, lithium te-tramethylpiperidide, sodium tetramethylpiperidide, potassium tetrame-thylpiperidide, magnésium tetramethylpiperidide, calcium tetramethylpiperidide, rubidium tetramethylpiperidide, [18-crown-6]-KHF2, KHF2, N,N’-diisopropylimidazonium, bifluorure, tetrabutylammonium, N(CmH 2m+i)4 OH- avec m étant un entier de 1 à 10. Process according to any one of claims 6 to 8, characterized in that, in step a), the molar content of said base is from 1 mol to 500 mol per 100 mol of said compound (IIb) or (IIb'). Process according to any one of claims 6 to 9, characterized in that step a) is carried out under an atmosphere containing less than 10 molar oxygen, preferably step a) is carried out under a nitrogen atmosphere. PO polymer comprising monomeric units derived from a fluorinated monomer MO comprising a C=C double bond and at least one fluorine atom and monomeric units derived from the compound of formula (I) according to any one of claims 1 to 5. Composition comprising a fluorinated polymer PI and a polymer P2 comprising monomeric units derived from the compound of formula (I) according to any one of claims 1 to 5. An electrode binder comprising said polymer according to claim 11 or said composition according to claim 12. Separator comprising said polymer according to claim 11 or said composition according to claim 12. Electrode comprising an active material, a binder according to claim 13 and optionally a conductive agent. Electrode according to the preceding claim, characterized in that said electrode is a positive electrode and the active material is selected from the group consisting of LiCoO2, Li(Ni, Co, AI)O2, Li(i+x)NiaMnb Coc (x represents a real number of 0 or more, a = 0.9, 0.8, 0.6, 0.5, or 1 / 3, b = 0.05, 0.1, 0.2, 0.3, or 1 / 3, c = 0.05, 0.1, 0.2, or 1 / 3), LiNiO2, LiMn2O4, LiCoMnO4, Li3NiMn3O3, Li3Fe2(PO4)3, Li3V2(PO4)3, a Li Mn spinel substituted by a different element having a composition represented by Lii+xMn2_x_yMyO4, M representing at least one metal selected from Al, Mg, Co, Fe, Ni, and Zn, x and y independently representing a real number between 0 and 2, lithium titanate Lix TiOy - x and y independently representing a real number between 0 and 2, and a lithium metal phosphate having a composition represented by LiMPO4, M representing Fe, Mn, Co, or Ni.

17. Electrode according to the preceding claim characterized in that said electrode is a negative electrode and the active material is selected from the group consisting of a lithium alloy, lithium metal, a metal oxide, a carbon material such as graphite or hard carbon, silicon, silicone, a silicon alloy and Li4Ti50i2.

18. A Li-ion secondary battery comprising a positive electrode, a negative electrode and a separator; said separator being according to claim 14 and / or one of said electrodes being according to any one of claims 15 to 17.

19. Use of the compound according to any one of claims 1 to 5 or of the polymer according to claim 11 or the composition according to claim 12 in the preparation of a conductive polymer, a solid electrolyte for fuel cells, paints, cables, wires, anti-corrosion equipment for the chemical industry, coatings for construction or architecture.