Dense fluoropolymer film

The present invention pertains to a process for the manufacture of a dense film, said process comprising, preferably consisting of the following steps: a) providing a solid composition [composition (C)] comprising, preferably consisting of: at least one vinylidene fluoride (VDF) fluoropolymer comprising one or more carboxylic acid functional end groups [polymer (F)], at least one poly(alkylene oxide) (PAO) of formula (I): HO-(CH

DENSE FLUOROPOLYMER FILM

The present invention pertains to a process for the manufacture of a dense film, said process comprising, preferably consisting of the following steps: a) providing a solid composition [composition (C)] comprising, preferably consisting of: at least one vinylidene fluoride (VDF) fluoropolymer comprising one or more carboxylic acid functional end groups [polymer (F)], at least one poly(alkylene oxide) (PAO) of formula (I): HO-(CH2CH RAO)n-RB, wherein RA is a hydrogen atom or a C1-C5 alkyl group, RB is a hydrogen atom or a -CH3 alkyl group and n is an integer comprised between 2000 and 40000, preferably between 4000 and 35000, more preferably between 11500 and 30000, and optionally, at least one inorganic filler [filler (I)]; and b) processing said composition (C) in molten phase thereby providing a dense film having a thickness of from 5 µm to 30 µm. The present invention also pertains to the dense film provided by said process and to use of said dense film as dense separator in electrochemical ...

PROCESS FOR LINING METAL PIPELINES

The present invention pertains to a process for lining a metal pipeline, said process comprising the following steps: (i) processing a thermoplastic fluoropolymer composition to yield a pipe liner having an outer diameter greater than the inner diameter of said metal pipeline, said thermoplastic fluoropolymer composition comprising: (A) from 10% to 60% by weight, on the total weight of polymer (A) and polymer (B ) of at least one vinylidene fluoride (VDF) homopolymer [polymer (A)], (B ) from 40% to 9 0% by weight, based on the total weight of polymer (A) and polymer (B ) of at least one VDF copolymer comprising from 2% to 15% by moles of recurring units derived from at least one other fluorinated comonomer ( F) [polymer (B )], and (ii) deforming said pipe liner, (iii) introducing the deformed pipe liner in said metal pipeline; and (iv) expanding the deformed pipe liner to fit with the inner diameter of said metal pipeline. The present invention also relates to a pipeline system.

DENSE FLUOROPOLYMER FILM

The present invention pertains to a process for the manufacture of a dense film, said process comprising, preferably consisting of the following steps: a) providing a solid composition [composition (C)] comprising, preferably consisting of: at least one vinylidene fluoride (VDF) fluoropolymer comprising one or more carboxylic acid functional end groups [polymer (F)], at least one poly(alkylene oxide) (PAO) of formula (I): HO-(CH2CH RAO)n-RB, wherein RA is a hydrogen atom or a C1-C5 alkyl group, RB is a hydrogen atom or a -CH3 alkyl group and n is an integer comprised between 2000 and 40000, preferably between 4000 and 35000, more preferably between 11500 and 30000, and optionally, at least one inorganic filler [filler (I)]; and b) processing said composition (C) in molten phase thereby providing a dense film having a thickness of from 5 µm to 30 µm. The present invention also pertains to the dense film provided by said process and to use of said dense film as dense separator in electrochemical ...

PROCESS FOR LINING METAL PIPELINES

The present invention pertains to a process for lining a metal pipeline, said process comprising the following steps: (i) processing a thermoplastic fluoropolymer composition to yield a pipe liner having an outer diameter greater than the inner diameter of said metal pipeline, said thermoplastic fluoropolymer composition comprising: (A) from 10% to 60% by weight, on the total weight of polymer (A) and polymer (B ) of at least one vinylidene fluoride (VDF) homopolymer [polymer (A)], (B ) from 40% to 9 0% by weight, based on the total weight of polymer (A) and polymer (B ) of at least one VDF copolymer comprising from 2% to 15% by moles of recurring units derived from at least one other fluorinated comonomer ( F) [polymer (B )], and (ii) deforming said pipe liner, (iii) introducing the deformed pipe liner in said metal pipeline; and (iv) expanding the deformed pipe liner to fit with the inner diameter of said metal pipeline. The present invention also relates to a pipeline system.

POLYMER ALLOY COMPRISING A SULPHUR-CONTAINING AROMATIC POLYMER AND A VDF-BASED POLYMER

The present invention relates to a polymer alloy comprising a sulphur-containing aromatic polymer and at least one fluoropolymer, which has improved dispersibility and improved mechanical properties. The invention also relates to a process for the preparation of said polymer alloy and to an article comprising the same. 1. A polymer alloy (PA) comprising:an aromatic polymer (A), which is a sulphur-containing aromatic polymer; and i) recurring units derived from vinylidene fluoride (VDF); and', 'ii) from 0.5 to 20% by moles of recurring units derived from chlorotrifluoroethylene (CTFE), with respect to the total moles of recurring units of copolymer (C)., 'a copolymer (C), wherein copolymer (C) comprises2. The polymer alloy according to wherein the aromatic polymer (A) is a poly(arylene sulfide) (PAS) or an aromatic sulfone polymer (SP).3. The polymer alloy (PA) according to wherein copolymer (C) further comprises at least one fluorinated monomer (FM) different from VDF and from CTFE.4. The polymer alloy according to wherein copolymer (C) comprises:i) recurring units derived from VDF in an amount from 50 to 90% by moles with respect to the total moles of recurring units of copolymer (C);ii) recurring units derived from CTFE in an amount from 0.5 to 20% by moles with respect to the total moles of recurring units of copolymer (C); andiii) recurring units derived from a fluorinated monomer (FM) in an amount from 10 to 30% by moles with respect to the total moles of recurring units of copolymer (C).7. A polymer alloy (PA) comprising:an aromatic polymer (A), which is a sulphur-containing aromatic polymer; and i) recurring units derived from vinylidene fluoride (VDF);', 'ii) from 0.5 to 20% by moles of recurring units derived from chlorotrifluoroethylene (CTFE), with respect to the total moles of recurring units of copolymer (C); and, 'a copolymer (C), wherein copolymer (C) comprisesat least one fluoropolymer (F), different from copolymer (C).8. A polymer alloy (PA) ...

Dense fluoropolymer film

The present invention pertains to a process for the manufacture of a dense film, said process comprising, preferably consisting of the following steps: a) providing a solid composition [composition (C)] comprising, preferably consisting of: at least one vinylidene fluoride (VDF) fluoropolymer comprising one or more carboxylic acid functional end groups [polymer (F)], at least one poly(alkylene oxide) (PAO) of formula (I): HO-(CH ...

FLUOROPOLYMER PIPE

The present invention pertains to a pipe comprising at least one layer at least comprising, preferably consisting essentially of (or being made of), a tetrafluoroethylene (TFE) copolymer comprising from 0.8% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below: 19-. (canceled)10. A process for lining a metal pipeline , said process comprising the following steps: {'br': None, 'sub': 2', 'f, 'CF═CF—O—R\u2003\u2003(I),'}, '(i) providing a pipe comprising at least one layer at least comprising a tetrafluoroethylene (TFE) copolymer [polymer (F)] comprising from 0.8% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below{'sub': f', '3', '5', '3', '12, 'wherein Ris a linear or branched C-Cperfluorinated alkyl group or a linear or branched C-Cperfluorinated oxyalkyl group comprising one or more ether oxygen atoms, said TFE copolymer having a melt flow index comprised between 0.5 and 6.0 g/10 min, as measured according to ASTM D1238 at 372° C. under a load of 5 Kg, said pipe having an outer diameter greater than the inner diameter of a metal pipeline;'}(ii) deforming said pipe thereby providing a deformed pipe having an outer diameter smaller than the inner diameter of said metal pipeline;(iii) introducing the deformed pipe in said metal pipeline; and(iv) expanding the deformed pipe so as to fit with the inner diameter of said metal pipeline.1115-. (canceled)16. The process according to , wherein the polymer (F) comprises from 1.2% to 2.5% by weight by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) as defined in .17. The process according to claim 10 , wherein the polymer (F) consists essentially of:{'claim-ref': {'@idref': 'CLM-00010', 'claim 10'}, 'from 1.2% to 2.5% by weight by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having ...

Melt-processable perfluoropolymers having improved thermal and mechanical properties after heating treatment

The invention mainly pertains to a process for heat treating a composition [composition (C)] which contains at least one melt-processible perfluoropolynner [polymer (F)] formed of tetrafluoroethylene (TFE) copolymer with one or more perfluorinated comonomers [comonomer (F)] containing at least one unsaturation of ethylene type in amounts from 0.5% to 13% by weight, preferably from 0.6% to 11% by weight, and more preferably from 0.8% to 9% by weight; the process comprising at least the step of heat-treating the composition (C) at a temperature of at least 260° C. and in the absence of a melt flowable polytetrafluoroethylene. The invention is also related to a melt-processible perfluoropolynner [polymer (F1)] formed of tetrafluoroethylene (TFE) copolymer with one or more perfluorinated comonomers [comonomer (F)] containing at least one unsaturation of ethylene type in amounts from 0.5% to 13% by weight, preferably from 0.6% to 11% by weight, and more preferably from 0.8% to 9% by weight, wherein a particular relation between comonomer (F) content and first melting temperature of polymer (F1) is satisfied.

DOWNHOLE CABLE

The present invention pertains to a cable comprising: at least one conductor coated by an insulation coating layer, a first protective layer surrounding said insulation coating layer, said first protective layer at least comprising, but preferably being made of a tetrafluoroethylene (TFE) copolymer comprising from 0.8% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below: CF2CFORf, wherein Rf is a linear or branched C3-C5 perfluorinated alkyl group or a linear or branched C3-C12 perfluorinated alkyl group comprising one or more ether oxygen atoms, said TFE copolymer having a melt flow index comprised between 1.0 and 6.0 g/10 min, as measured according to ASTM D1238 at 372° C. under a load of 5 Kg [polymer (F)]; optionally, a second protective layer surrounding said first protective layer, and an armor shell surrounding said first or second protective layer. The invention also pertains to use of the cable in downhole ...

FLUOROPOLYMER PIPE

The present invention pertains to a pipe comprising at least one layer at least comprising, preferably consisting essentially of (or being made of), a tetrafluoroethylene (TFE) copolymer comprising from 0.8% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below: CF=CF—O—Rf (I) wherein Ris a linear or branched C-Cperfluorinated alkyl group or a linear or branched C-Cperfluorinated oxyalkyl group comprising one or more ether oxygen atoms, said TFE copolymer having a melt flow index comprised between 0.5 and 6.0 g/10 min, as measured according to ASTM D1238 at 372° C. under a load of 5 Kg [polymer (F)]. The invention also pertains to use of said pipe in heat exchangers and in downhole operations including drilling operations. 1. A process for lining a metal pipeline , said process comprising the following steps: {'br': None, 'sub': 2', 'f, 'CF=CF-—O—R\u2003\u2003(I),'}, '(i) providing a pipe comprising at least one layer at least comprising a tetrafluoroethylene (TFE) copolymer, polymer (F) comprising from 1.2% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below{'sub': 3', '5, 'wherein Rf is a linear or branched C-Cperfluorinated alkyl group, said TFE copolymer having a melt flow index comprised between 0.5 and 6.0 g/10 min, as measured according to ASTM D1238 at 372° C. under a load of 5 kg, said pipe having an outer diameter greater than an inner diameter of a metal pipeline;'}(ii) deforming said pipe thereby providing a deformed pipe having an outer diameter smaller than the inner diameter of said metal pipeline;(iii) introducing the deformed pipe in said metal pipeline; and(iv) expanding the deformed pipe so as to fit with the inner diameter of said metal pipeline.2. The process according to , wherein the polymer (F) comprises from 1.2% to 2.5% by weight by weight of recurring units derived from at least one ...

Fluoropolymer pipe

The present invention pertains to a pipe comprising at least one layer at least comprising, preferably consisting essentially of (or being made of), a tetrafluoroethylene (TFE) copolymer comprising from 0.8% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below: CF2=CF-O-Rf (I) wherein Rf is a linear or branched C3-C5 perfluorinated alkyl group or a linear or branched C3-C12 perfluorinated oxyalkyl group comprising one or more ether oxygen atoms, said TFE copolymer having a melt flow index comprised between 0.5 and 6.0 g/10 min, as measured according to ASTM D1238 at 372 DEG C under a load of 5 Kg [polymer (F)]. The invention also pertains to use of said pipe in heat exchangers and in downhole operations including drilling operations.

Downhole cable

The present invention pertains to a cable comprising: - at least one conductor coated by an insulation coating layer, - a first protective layer surrounding said insulation coating layer, said first protective layer at least comprising, but preferably being made of, a tetrafluoroethylene (TFE) copolymer comprising from 0.8% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below: CF2=CF-O-Rf, wherein Rf is a linear or branched C3-C5 perfluorinated alkyl group or a linear or branched C3-C12 perfluorinated alkyl group comprising one or more ether oxygen atoms, said TFE copolymer having a melt flow index comprised between 1.0 and 6.0g/10min, as measured according to ASTM D1238 at 372 DEG C under a load of 5Kg [polymer (F)]; - optionally, a second protective layer surrounding said first protective layer, and - an armor shell surrounding said first or second protective layer. The invention also pertains to use of the cable ...

FLUOROPOLYMER PIPE

The present invention pertains to a pipe comprising at least one layer at least comprising, preferably consisting essentially of (or being made of), a tetrafluoroethylene (TFE) copolymer comprising from 0.8% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below: CF═CF—O—R(I) wherein Ris a linear or branched C-Cperfluorinated alkyl group or a linear or branched C-Cperfluorinated oxyalkyl group comprising one or more ether oxygen atoms, said TFE copolymer having a melt flow index comprised between 0.5 and 6.0 g/10 min, as measured according to ASTM D1238 at 372° C. under a load of 5 Kg [polymer (F)]. The invention also pertains to use of said pipe in heat exchangers and in downhole operations including drilling operations. 1. A pipe being an unbonded flexible riser and comprising at least one layer made of a tetrafluoroethylene (TFE) copolymer consisting of: {'br': None, 'sub': 2', 'f, 'CF═CF—O—R\u2003\u2003(I)'}, 'from 1.2% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below{'sub': f', '3', '5', '3', '12, 'claim-text': one or more ether oxygen atoms, and', 'from 97.5% to 98.8% by weight of recurring units derived from TFE,, 'wherein Ris a linear or branched C-Cperfluorinated alkyl group or a linear or branched C-Cperfluorinated oxyalkyl group comprisingsaid TFE copolymer having a melt flow index comprised between 0.5 and 6.0 g/10 min, as measured according to ASTM D1238 at 372° C. under a load of 5 kg, and a melting point comprised between 311° C. and 321° C., polymer (F).2. The pipe according to claim 1 , wherein the polymer (F) has a melt flow index comprised between 0.6 and 5.5 g/10 min claim 1 , as measured according to ASTM D1238 at 372° C. under a load of 5 kg.3. The pipe according to claim 1 , wherein the perfluorinated alkyl vinyl ether complies with formula (II) here below:{'br': None, 'sub': 2', 'f, 'CF═CF—O—R′\ ...

FLUOROPOLYMER PIPE

The present invention pertains to a pipe comprising at least one layer at least comprising, preferably consisting essentially of (or being made of), a tetrafluoroethylene (TFE) copolymer comprising from 0.8% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below: 2. The pipe according to claim 1 , wherein the polymer (F) has a melt flow index comprised between 0.6 and 5.5 g/10 min claim 1 , as measured according to ASTM D1238 at 372° C. under a load of 5 Kg.4. The pipe according to claim 1 , wherein the perfluorinated alkyl vinyl ether is perfluoropropyl vinyl ether (PPVE).57-. (canceled)8. The pipe according to claim 1 , the pipe being a rough-bore flexible riser.9. The pipe according to claim 1 , the pipe being a smooth-bore flexible riser.1011-. (canceled)12. A pipeline system comprising at least two coaxial pipes:an outer metal pipeline, and {'br': None, 'sub': 2', 'f, 'CF═CF—O—R\u2003\u2003(I)'}, 'an inner pipe comprising at least one layer at least comprising a tetrafluoroethylene (TFE) copolymer [polymer (F)] comprising from 0.8% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below{'sub': f', '3', '5', '3', '12, 'wherein Ris a linear or branched C-Cperfluorinated alkyl group or a linear or branched C-Cperfluorinated oxyalkyl group comprising one or more ether oxygen atoms,'}said TFE copolymer having a melt flow index comprised between 0.5 and 6.0 g/10 min, as measured according to ASTM D1238 at 372° C. under a load of 5 Kg.13. The pipeline system according to any one of claim 12 , wherein the pipeline system is used in heat exchangers.14. The pipeline system according to claim 12 , wherein the pipe is used in downhole operations.15. The pipeline system according to claim 12 , wherein the pipe is used in drilling operations.16. The pipeline system according to claim 12 , wherein the outer diameter of the inner pipe ...

POLYMER ALLOY COMPRISING A SULPHUR-CONTAINING AROMATIC POLYMER AND A THERMOPLASTIC VULCANIZATE

The present invention relates to a polymer alloy comprising a sulphur-containing aromatic polymer and at least one thermoplastic vulcanizate which has an improved dispersibility, to a process for the preparation thereof and to articles comprising the same. 1. A polymer alloy (PA) which comprises:(a) an aromatic polymer (A), which is a sulphur-containing aromatic polymer; and i) at least one polymer (F), wherein polymer (F) is at least one thermoplastic fluoropolymer; and', 'ii) at least one elastomer (E), wherein elastomer (E) is at least one (per)fluoroelastomer., '(b) a vulcanizate (C), which is a thermoplastic vulcanizate fluorine-containing composition comprising a continuous thermoplastic fluoropolymer phase and a dispersed vulcanized fluoroelastomer phase, said composition comprising2. The polymer alloy (PA) according to wherein the aromatic polymer (A) is a poly(arylene sulfide (PAS) or an aromatic sulfone polymer (SP).4. The polymer alloy (PA) according to according to wherein polymer (F) comprises:at least 60% by moles by moles of recurring units derived from vinylidene fluoride (VDF),optionally, from 0.1% to 15% by moles of recurring units derived from at least one fluorinated monomer different from VDF, said fluorinated monomer being selected from the group consisting of vinyl fluoride (VF1), chlorotrifluoroethylene (CTFE), hexafluoropropylene (HFP), tetrafluoroethylene (TFE), trifluoroethylene (TrFE) and perfluoromethylvinylether (PMVE), all the aforementioned % by moles being referred to the total moles of recurring units of the polymer (F).8. A polymer alloy (PA) which comprises:(a) an aromatic polymer (A), which is a sulphur-containing aromatic polymer; and i) at least one polymer (F), wherein polymer (F) is at least one thermoplastic fluoropolymer; and', 'ii) at least one elastomer (E), wherein elastomer (E) is at least one (per)fluoroelastomer, and, '(b) a vulcanizate (C), which is a thermoplastic vulcanizate fluorine-containing composition ...

POLYMER ALLOY COMPRISING A SULPHUR-CONTAINING AROMATIC POLYMER AND A FLUOROELASTOMER

The present invention relates to a polymer alloy comprising a sulphur-containing aromatic polymer and at least one fluoroelastomer, which has improved dispersibility and improved mechanical properties. The invention also relates to a process for the preparation of said polymer alloy and to an article comprising the same. 1. A polymer alloy (PA) comprising:(a) an aromatic polymer (A), which is a sulphur-containing aromatic polymer; and(b) a mixture (M) of at least one uncrosslinked fluoroelastomer (E) with at least one oxide or hydroxide of divalent metal (MO).2. The polymer alloy according to wherein the aromatic polymer (A) is a poly(arylene sulfide (PAS) or an aromatic sulfone polymer (SP).5. The polymer alloy (PA) according to according to wherein the fluoropolymer resin (R) is selected from the group consisting of VDF/TFE copolymers claim 4 , VDF/TFE/HFP terpolymers claim 4 , VDF/TFE/CTFE terpolymers claim 4 , VDF/TFE/TrFE terpolymers claim 4 , VDF/HFP copolymers claim 4 , VDF/TFE/HFP/CTFE polymers.6. The polymer alloy (PA) according to wherein the at least one oxide or hydroxide of divalent metal (MO) is selected from the group consisting of CaO claim 1 , Ca(OH) claim 1 , MgO claim 1 , Mg(OH)and mixtures thereof.7. The polymer alloy (PA) according to wherein the mixture (M) comprises 100 parts of at least one uncrosslinked fluoroelastomer (E) claim 1 , from 0.5 to 5 parts of Ca(OH) claim 1 , and from 0.5 to 5 parts of MgO.8. The polymer alloy (PA) according to which comprises:(a) from 60 to 90% by weight of aromatic polymer (A);(b) from 10 to 40% by weight of mixture (M),all the aforementioned percentages by weight being referred to the total weight of polymer alloy (PA).9. A polymer alloy (PA) comprising:(a) an aromatic polymer (A), which is a sulphur-containing aromatic polymer;(b) a mixture (M) of at least one uncrosslinked fluoroelastomer (E) with at least one divalent metal oxide (MO); and(c) at least one thermoplastic fluoropolymer (F).11. A polymer alloy ...

MELT-PROCESSABLE PERFLUOROPOLYMERS HAVING IMPROVED THERMAL AND MECHANICAL PROPERTIES AFTER HEATING TREATMENT

The invention mainly pertains to a method for heat treating a composition [composition (C)] which contains at least one melt-processible perfluoropolymer [polymer (F)] formed of tetrafluoroethylene (TFE) copolymer with one or more perfluorinated comonomers [comonomer (F)] containing at least one unsaturation of ethylene type in amounts from 0.5% to 13% by weight, preferably from 0.6% to 11% by weight, and more preferably from 0.8% to 9% by weight; said polymer (F) possessing reactive end groups comprising at least one of the group consisting of hydrogen atoms, oxygen atoms and ethylenically unsaturated double bonds in an amount of at least 4.5 mmol/kg, the process comprising at least the step of heat-treating the composition (C) at a temperature of at least 260° C. 1. A method for heat treating a composition (C) which contains at least one melt-processible perfluoropolymer [polymer (F)] formed of tetrafluoroethylene (TFE) copolymer with one or more perfluorinated comonomers [comonomer (F)] containing at least one unsaturation of ethylene type in amounts from 0.5% to 13% by weight; said polymer (F) possessing reactive end groups comprising at least one of the group consisting of hydrogen atoms , oxygen atoms and ethylenically unsaturated double bonds in an amount of at least 4.5 mmol/kg , the process comprising at least the step of heat-treating the composition (C) at a temperature of at least 260° C.2. The method according to claim 1 , wherein said comonomer (F) is selected from:{'sub': 3', '8, 'C-Cperfluoroolefins;'}{'sub': 2', 'f', 'f', '1', '6, 'CF═CFORperfluoroalkylvinylethers (PAVE), wherein Ris a C-Cperfluoroalkyl;'}{'sub': 2', '1', '12, 'CF═CFOX perfluorooxyalkylvinylethers wherein X is a C-Cperfluorooxyalkyl having one or more ether groups; and'}perfluorodioxoles.4. The method according to claim 3 , wherein said comonomer (F) is selected from PMVE claim 3 , PEVE claim 3 , PPVE claim 3 , MOVE claim 3 , and combinations thereof.5. The method according to claim ...

Melt-processable perfluoropolymers having improved thermal and mechanical properties after heating treatment

The invention mainly pertains to a process for heat treating a composition [composition (C)] which contains at least one melt-processible perfluoropolynner [polymer (F)] formed of tetrafluoroethylene (TFE) copolymer with one or more perfluorinated comonomers [comonomer (F)] containing at least one unsaturation of ethylene type in amounts from 0.5% to 13% by weight, preferably from 0.6% to 11% by weight, and more preferably from 0.8% to 9% by weight; the process comprising at least the step of heat-treating the composition (C) at a temperature of at least 260 DEG C and in the absence of a melt flowable polytetrafluoroethylene. The invention is also related to a melt-processible perfluoropolynner [polymer (F1)] formed of tetrafluoroethylene (TFE) copolymer with one or more perfluorinated comonomers [comonomer (F)] containing at least one unsaturation of ethylene type in amounts from 0.5% to 13% by weight, preferably from 0.6% to 11% by weight, and more preferably from 0.8% to 9% by weight ...

FLUOROPOLYMER PIPE

The present invention pertains to a pipe comprising at least one layer at least comprising, preferably consisting essentially of (or being made of), a tetrafluoroethylene (TFE) copolymer comprising from 0.8% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below: CF2CFORf (I) wherein Rf is a linear or branched C3-C5 perfluorinated alkyl group or a linear or branched C3-C12 perfluorinated oxyalkyl group comprising one or more ether oxygen atoms, said TFE copolymer having a melt flow index comprised between 0.5 and 6.0 g/10 min, as measured according to ASTM D1238 at 372° C. under a load of 5 Kg [polymer (F)]. The invention also pertains to use of said pipe in heat exchangers and in downhole operations including drilling operations.

Polymer alloy comprising a sulphur-containing aromatic polymer and a thermoplastic vulcanizate

The present invention relates to a polymer alloy comprising a sulphur-containing aromatic polymer and at least one thermoplastic vulcanizate which has an improved dispersibility, to a process for the preparation thereof and to articles comprising the same.

Dense fluoropolymer film

The present invention pertains to a process for the manufacture of a dense film. The process includes processing, in a molten phase, a solid composition [composition (C)] comprising;at least one vinylidene fluoride (VDF) fluoropolymer comprising one or more carboxylic acid functional end groups [polymer (F)],at least one poly(alkylene oxide) (PAO) of formula (I):HO—(CH2CHRAO)n—RB (I)wherein RA is a hydrogen atom or a C1-C5 alkyl group, RB is a hydrogen atom or a —CH3 alkyl group and n is an integer comprised between 2000 and 40000, preferably between 4000 and 35000, more preferably between 11500 and 30000, and -optionally, at least one inorganic filler [filler (I)]; thereby providing a dense film having a thickness of from 5 μm to 30 μm.The present invention also pertains to the dense film provided by this process and to the use of the dense film as dense separator in electrochemical devices.

Melt-processable perfluoropolymers having improved thermal and mechanical properties after heating treatment

The invention mainly pertains to a method for heat treating a composition [composition (C)] which contains at least one melt-processible perfluoropolymer [polymer (F)] formed of tetrafluoroethylene (TFE) copolymer with one or more perfluorinated comonomers [comonomer (F)] containing at least one unsaturation of ethylene type in amounts from 0.5% to 13% by weight, preferably from 0.6% to 11% by weight, and more preferably from 0.8% to 9% by weight; said polymer (F) possessing reactive end groups comprising at least one of the group consisting of hydrogen atoms, oxygen atoms and ethylenically unsaturated double bonds in an amount of at least 4.5 mmol/kg, the process comprising at least the step of heat-treating the composition (C) at a temperature of at least 260° C.

COMPOSITION CONTAINING FLUORINATED THERMOPLASTIC ELASTOMERS AND VULCANIZATES

The present invention relates to new fluorinated thermoplastic elastomer compositions comprising a continuous thermoplastic fluorocarbon polymer phase and a dispersed vulcanized fluorine-containing elastomer phase having improved thermal processability. 2. The fluoropolymer composition (FC) of wherein the amount of polymer (F-TPE) is of at least 3% wt with respect to the total weight of fluoropolymer composition (FC).3. The fluoropolymer composition (FC) of wherein the amount of vulcanizate (C) is of at least 30% wt with respect to the total weight of fluoropolymer composition (FC).6. The fluoropolymer composition (FC) according to wherein polymer (a2) has a heat of fusion (ΔH) of at least 25 J/g claim 1 , when determined by DSC according to ASTM D3418.8. The fluoropolymer composition (FC) according to wherein polymer (a2) is selected from the group consisting of a VDF homopolymer claim 1 , a VDF/TFE copolymer and a VDF/CTFE copolymer.9. The fluoropolymer composition (FC) according to wherein the weight ratio between polymer (a2) and elastomer (a1) in vulcanizate (C) is comprised between 10/90 wt/wt to 70/30 wt/wt.11. The fluoropolymer composition (FC) according to wherein block (b2) consists of a sequence of recurring units derived from VDF wherein the crystallinity of said block (b2) and its weight fraction in the polymer (F-TPE) are such to provide for a heat of fusion (ΔHf) of the polymer (F-TPE) of at most 20 J/g claim 1 , when determined according to ASTM D3418; andoptionally, recurring units derived from one or more than one hydrogenated monomer.12. The fluoropolymer composition (FC) according to wherein block (b2) is selected from the group consisting of a VDF homopolymer claim 1 , a VDF/TFE copolymer and a VDF/CTFE copolymer.13. The fluoropolymer composition (FC) according to wherein the weight ratio between blocks (b1) and blocks (b2) in the F-TPE is comprised between 95:5 and 10:90.14. The fluoropolymer composition (FC) according to wherein polymer (a2) ...

FLUORINE-CONTAINING THERMOPLASTIC ELASTOMER COMPOSITION

The invention pertains to a thermoplastic vulcanizate fluorine-containing composition [vulcanizate (C)], comprising a continuous thermoplastic fluoropolymer phase and a dispersed vulcanized fluoroelastomer phase, said composition comprising:—at least one thermoplastic fluoropolymer [polymer (F)];—at least one (per)fluoroelastomer [elastomer (A)], and—at least one plasticizer selected from the group consisting of organic esters [plasticizer (P)].

Process for lining metal pipelines

A process for lining a metal pipeline, which process generally utilizes thermoplastic fluoropolymer pipe liner Also, a pipeline system that includes at least two coaxial pipes, an outer metal pipe and inner thermoplastic fluoropolymer pipe. The thermoplastic fluoropolymer pipe/pipe liner is made from a composition that generally includes from 10% to 60% by weight of at least one vinylidene fluoride (VDF) homopolymer, from 40% to 90% by weight of at least one VDF copolymer comprising from 2% to 15% by moles of recurring units derived from at least one other fluorinated comonomer (F), and optionally at least one plasticizer.

PROCESS FOR LINING METAL PIPELINES

The present invention pertains to a process for lining a metal pipeline, said process comprising the following steps: (i) processing a thermoplastic fluoropolymer composition to yield a pipe liner having an outer diameter greater than the inner diameter of said metal pipeline, said thermoplastic fluoropolymer composition comprising: (A) from 10% to 60% by weight, on the total weight of polymer (A) and polymer (B) of at least one vinylidene fluoride (VDF) homopolymer [polymer (A)], (B) from 40% to 90% by weight, based on the total weight of polymer (A) and polymer (B) of at least one VDF copolymer comprising from 2% to 15% by moles of recurring units derived from at least one other fluorinated comonomer (F) [polymer (B)], and (ii) deforming said pipe liner, (iii) introducing the deformed pipe liner in said metal pipeline; and (iv) expanding the deformed pipe liner to fit with the inner diameter of said metal pipeline. The present invention also relates to a pipeline system. 1. A process for lining a metal pipeline , said process comprising the following steps: (A) from 10% to 60% by weight, based on the total weight of polymer (A) and polymer (B), of at least one vinylidene fluoride (VDF) homopolymer [polymer (A)],', '(B) from 40% to 90% by weight, based on the total weight of polymer (A) and polymer (B), of at least one VDF copolymer comprising from 2% to 15% by moles of recurring units derived from at least one other fluorinated comonomer (F) [polymer (B)], and', 'optionally, (C) at least one plasticizer;, '(i) processing a thermoplastic fluoropolymer composition to yield a pipe liner having an outer diameter greater than the inner diameter of said metal pipeline, said thermoplastic fluoropolymer composition comprising(ii) deforming said pipe liner to yield a deformed pipe liner having an outer diameter smaller than the inner diameter of said metal pipeline;(iii) introducing the deformed pipe liner in said metal pipeline; and(iv) expanding the deformed pipe liner ...

FLUOROPOLYMER PIPE

The present invention pertains to a pipe comprising at least one layer at least comprising, preferably consisting essentially of (or being made of), a tetrafluoroethylene (TFE) copolymer comprising from 0.8% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below: CF═CF—O—R(I) wherein Ris a linear or branched C-Cperfluorinated alkyl group or a linear or branched C-Cperfluorinated oxyalkyl group comprising one or more ether oxygen atoms, said TFE copolymer having a melt flow index comprised between 0.5 and 6.0 g/10 min, as measured according to ASTM D1238 at 372° C. under a load of 5 Kg [polymer (F)]. The invention also pertains to use of said pipe in heat exchangers and in downhole operations including drilling operations. 2. The pipe according to claim 1 , wherein polymer (F) has a melt flow index comprised between 0.6 and 5.5 g/10 min claim 1 , as measured according to ASTM D1238 at 372° C. under a load of 5 Kg.4. The pipe according to claim 1 , wherein the perfluorinated alkyl vinyl ether is perfluoropropyl vinyl ether (PPVE).5. The pipe according to claim 1 , said pipe being a monolayer pipe or a multilayer pipe.6. The pipe according to claim 1 , said pipe being a flexible riser.7. The pipe according to claim 6 , the pipe being a bonded flexible riser.8. The pipe according to claim 6 , the pipe being a rough-bore flexible riser.9. The pipe according to claim 6 , the pipe being a smooth-bore flexible riser.10. A process for lining a metal pipeline claim 6 , said process comprising: {'br': None, 'sub': 2', 'f, 'CF═CF—O—R\u2003\u2003(I)'}, '(i) providing a pipe comprising at least one layer at least comprising, a tetrafluoroethylene (TFE) copolymer [polymer (F)] comprising from 0.8% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I){'sub': f', '3', '5', '3', '12, 'wherein Ris a linear or branched C-Cperfluorinated alkyl group or a ...

DOWNHOLE CABLE

The present invention pertains to a cable comprising: —at least one conductor coated by an insulation coating layer, —a first protective layer surrounding said insulation coating layer, said first protective layer at least comprising, but preferably being made of a tetrafluoroethylene (TFE) copolymer comprising from 0.8% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below: CF═CF—O—R, wherein Ris a linear or branched C-Cperfluorinated alkyl group or a linear or branched C-Cperfluorinated alkyl group comprising one or more ether oxygen atoms, said TFE copolymer having a melt flow index comprised between 1.0 and 6.0 g/10 min, as measured according to ASTM D1238 at 372° C. under a load of 5 Kg [polymer (F)]; —optionally, a second protective layer surrounding said first protective layer, and —an armor shell surrounding said first or second protective layer. The invention also pertains to use of the cable in downhole wells. 1. A cable comprising:at least one conductor coated by an insulation coating layer, {'br': None, 'sub': 'f', 'CF2=CF—O—R,'}, 'from 0.8% to 2.5% by weight of recurring units derived from at least one per-fluorinated alkyl vinyl ether having formula (I) here below, 'a first protective layer surrounding said insulation coating layer, said first protective layer being made of a tetrafluoroethylene (TFE) copolymer [polymer (F)] consisting essentially of{'sub': f', '3', '5, 'claim-text': 'from 97.5% to 99.2% by weight of recurring units derived from TFE, said polymer (F) having a melt flow index comprised between 1.0 and 6.0 g/10 min, as measured according to ASTM D1238 at 372° C. under a load of 5 Kg;', 'wherein Ris a linear or branched C-Cperfluorinated alkyl group or a linear or branched C3-C12 perfluorinated alkyl group comprising one or more ether oxygen atoms, and'}optionally, a second protective layer surrounding said first protective layer, andan armor shell surrounding said ...

FLUORINE-CONTAINING THERMOPLASTIC ELASTOMER COMPOSITION

The present invention relates to a fluorine-containing thermoplastic elastomer composition comprising a continuous thermoplastic fluorocarbon polymer phase and a dispersed fluorine-containing elastomer phase which are useful, for example, in automotive fuel lines. 115-. (canceled)16. A thermoplastic elastomer composition [composition (C)] comprising a continuous thermoplastic fluoropolymer phase and a dispersed fluoroelastomer phase , said composition comprising:a. at least one thermoplastic fluoropolymer [polymer (F)], said polymer (F) comprising:from 60% to 80% by moles of recurring units derived from tetrafluoroethylene (TFE),from 15% to 35% by moles of recurring units derived from vinylidene fluoride (VDF), and{'claim-text': {'br': None, 'sub': ['2', 'f'], '#text': 'CF═CF—O—R\u2003\u2003(I)'}, '#text': 'from 1% to 5% by moles of recurring units derived from at least one perfluoroalkylvinylether (PAVE) of formula (I):'}{'sub': ['f', '1', '6', '1', '6'], '#text': 'wherein Ris a C-Calkyl group or a C-C(per)fluoroalkyl group,'}wherein the molar amounts of said recurring units are relative to the total moles of recurring units in said polymer (F); andb. at least one (per)fluoroelastomer [elastomer (A)].17. The composition (C) of claim 16 , wherein the perfluoroalkylvinylether (PAVE) of formula (I) is selected from the group consisting of perfluoromethylvinylether (PMVE) of formula CF═CF—O—CF claim 16 , perfluoroethylvinylether (PEVE) of formula CF═CF—O—CF—CFand perfluoropropylvinylether (PPVE) of formula CF═CF—O—CF-CF—CF.20. The composition (C) according claim 17 , wherein elastomer (A) is a vinylidene fluoride/hexafluoropropoylene copolymer.21. The composition (C) according to claim 17 , wherein elastomer (A) is a vinylidene fluoride/hexafluoropropoylene/tetrafluorethylene copolymer.22. The composition (C) according to claim 16 , which further contains at least one additional ingredient selected from the group consisting of extender oils claim 16 , synthetic ...

Fluorine-containing thermoplastic elastomer composition

The invention pertains to a thermoplastic vulcanizate fluorine-containing composition [vulcanizate (C)], comprising a continuous thermoplastic fluoropolymer phase and a dispersed vulcanized fluoroelastomer phase, said composition comprising:—at least one thermoplastic fluoropolymer [polymer (F)];—at least one (per)fluoroelastomer [elastomer (A)], and—at least one plasticizer selected from the group consisting of organic esters [plasticizer (P)].

MELT-PROCESSABLE PERFLUOROPOLYMERS HAVING IMPROVED THERMAL AND MECHANICAL PROPERTIES AFTER HEATING TREATMENT

The invention mainly pertains to a process for heat treating a composition [composition (C)] which contains at least one melt-processible perfluoropolynner [polymer (F)] formed of tetrafluoroethylene (TFE) copolymer with one or more perfluorinated comonomers [comonomer (F)] containing at least one unsaturation of ethylene type in amounts from 0.5% to 13% by weight, preferably from 0.6% to 11% by weight, and more preferably from 0.8% to 9% by weight; the process comprising at least the step of heat-treating the composition (C) at a temperature of at least 260° C. and in the absence of a melt flowable polytetrafluoroethylene. The invention is also related to a melt-processible perfluoropolynner [polymer (F1)] formed of tetrafluoroethylene (TFE) copolymer with one or more perfluorinated comonomers [comonomer (F)] containing at least one unsaturation of ethylene type in amounts from 0.5% to 13% by weight, preferably from 0.6% to 11% by weight, and more preferably from 0.8% to 9% by weight, wherein a particular relation between comonomer (F) content and first melting temperature of polymer (F1) is satisfied. 1. A process for heat treating a composition (C) which contains at least one polymer (F) , wherein polymer (F) is a melt-processible perfluoropolymer formed of tetrafluoroethylene (TFE) copolymer with one or more perfluorinated comonomer (F) containing at least one unsaturation of ethylene type in amounts from 0.5% to 13% by weight; the process comprising heat-treating composition (C) at a temperature of at least 260° C. and in the absence of a melt flowable polytetrafluoroethylene (PTFE):for at least 24 hours, and/or (i) a temperature such that composition (C) is in the solid state during heat treatment; and/or', '(ii) below the initial melting temperature of composition (C); and/or', '(iii) below the initial melting temperature of polymer (F)., 'wherein the maximum temperature of heat-treating composition (C) is2. The process according to claim 1 , wherein ...

Dense fluoropolymer film

The present invention pertains to a process for the manufacture of a dense film, said process comprising, preferably consisting of the following steps: a) providing a solid composition [composition (C)] comprising, preferably consisting of: at least one vinylidene fluoride (VDF) fluoropolymer comprising one or more carboxylic acid functional end groups [polymer (F)], at least one poly(alkylene oxide) (PAO) of formula (I): HO—(CH 2 CH R A O) n —R B , wherein R A is a hydrogen atom or a C 1 -C 5 alkyl group, R B is a hydrogen atom or a —CH 3 alkyl group and n is an integer comprised between 2000 and 40000, preferably between 4000 and 35000, more preferably between 11500 and 30000, and optionally, at least one inorganic filler [filler (I)]; and b) processing said composition (C) in molten phase thereby providing a dense film having a thickness of from 5 μm to 30 μm. The present invention also pertains to the dense film provided by said process and to use of said dense film as dense separator in electrochemical devices.

Fluorine-containing thermoplastic elastomer composition

The invention pertains to a thermoplastic vulcanizate fluorine-containing composition [vulcanizate (C)], comprising a continuous thermoplastic fluoropolymer phase and a dispersed vulcanized fluoroelastomer phase, said composition comprising: - at least one thermoplastic fluoropolymer [polymer (F)]; - at least one (per)fluoroelastomer [elastomer (A)]; and - at least one organic esters plasticizer [plasticizer (P)].

Fluorine-containing thermoplastic elastomer composition

The invention pertains to a thermoplastic vulcanizate fluorine-containing composition [vulcanizate (C)], comprising a continuous thermoplastic fluoropolymer phase and a dispersed vulcanized fluoroelastomer phase, said composition comprising: - at least one thermoplastic fluoropolymer [polymer (F)]; - at least one (per)fluoroelastomer [elastomer (A)], and - at least one plasticizer selected from the group consisting of organic esters [plasticizer (P)].

Polymer alloy comprising a sulphur-containing aromatic polymer and a fluoroelastomer

The present invention relates to a polymer alloy comprising a sulphur-containing aromatic polymer and at least one fluoroelastomer, which has improved dispersibility and improved mechanical properties. The invention also relates to a process for the preparation of said polymer alloy and to an article comprising the same.

Melt-processable perfluoropolymers having improved thermal and mechanical properties after heating treatment

The invention mainly pertains to a method for heat treating a composition [composition (C)] which contains at least one melt-processible perfluoropolymer [polymer (F)] formed of tetrafluoroethylene (TFE) copolymer with one or more perfluorinated comonomers [comonomer (F)] containing at least one unsaturation of ethylene type in amounts from 0.5% to 13% by weight, preferably from 0.6% to 11 % by weight, and more preferably from 0.8% to 9% by weight; said polymer (F) possessing reactive end groups comprising at least one of the group consisting of hydrogen atoms, oxygen atoms and ethylenically unsaturated double bonds in an amount of at least 4.5 mmol/kg, the process comprising at least the step of heat-treating the composition (C) at a temperature of at least 260°C.

fluoropolymer

Downhole cable

The present invention pertains to a cable comprising: - at least one conductor coated by an insulation coating layer, - a first protective layer surrounding said insulation coating layer, said first protective layer at least comprising, but preferably being made of, a tetrafluoroethylene (TFE) copolymer comprising from 0.8% to 2.5% by weight of recurring units derived from at least one perfluorinated alkyl vinyl ether having formula (I) here below: CF 2 =CF-O-R f , wherein R f is a linear or branched C 3 -C 5 perfluorinated alkyl group or a linear or branched C 3 -C 12 perfluorinated alkyl group comprising one or more ether oxygen atoms, said TFE copolymer having a melt flow index comprised between 1.0 and 6.0 g/10 min, as measured according to ASTM D1238 at 372°C under a load of 5 Kg [polymer (F)]; - optionally, a second protective layer surrounding said first protective layer, and - an armor shell surrounding said first or second protective layer. The invention also pertains to use of the cable in downhole wells.

Melt-processable perfluoropolymers having improved thermal and mechanical properties after heating treatment

The invention mainly pertains to a method for heat treating a composition [composition (C)] which contains at least one melt-processible perfluoropolymer [polymer (F)] formed of tetrafluoroethylene (TFE) copolymer with one or more perfluorinated comonomers [comonomer (F)] containing at least one unsaturation of ethylene type in amounts from 0.5% to 13% by weight, preferably from 0.6% to 11 % by weight, and more preferably from 0.8% to 9% by weight; said polymer (F) possessing reactive end groups comprising at least one of the group consisting of hydrogen atoms, oxygen atoms and ethylenically unsaturated double bonds in an amount of at least 4.5 mmol/kg, the process comprising at least the step of heat-treating the composition (C) at a temperature of at least 260°C.

Fluorine-containing thermoplastic elastomer composition

The present invention relates to a fluorine-containing thermoplastic elastomer composition comprising a continuous thermoplastic fluorocarbon polymer phase and a dispersed fluorine-containing elastomer phase which are useful, for example, in automotive fuel lines.

Thermoplastic polymeric composition having good adhesion to polyolefin and fluoropolymer based materials

The present invention relates to a thermoplastic polymeric composition comprising: a) one or more functionalized polyolefin as component A, b) one or more functionalized fluoropolymer as component B, c) one or more non functionalized polyolefin as component C, d) one or more non functionalized fluoropolymer as component D, wherein, - the total amount of components A and B is 1-50% by weight of the total amount of components A, B, C and D, - the total amount of components C and D is 50-99% by weight of the total amount of components A, B, C and D, - the weight ratio between components A and B is from 1:1.2 to 1:10, - the weight ratio between components C and D is from 1:1.2 to 1:5, - said one or more functionalized polyolefin (A) comprising functional groups X and said one or more functionalized fluoropolymer (B) comprising functional groups Y, and - one of the following conditions i) or ii) is satisfied: i) said functional groups X and Y are reactive with each other, ii) said functional groups are non reactive with each other and said thermoplastic polymeric composition comprises an additional component (E) said component (E) consisting of one or more reactive compatibilizer compounds, said reactive compatibilizer compounds comprising at least one free functional group which is reactive with functional group X and one free functional groups which is reactive with functional group Y for each molecule of said reactive compatibilizer compound.

Polymer alloy comprising a sulphur-containing aromatic polymer and a fluoroelastomer

Processo de revestimento de condutas metálicas

processo de revestimento de condutas metálicas a presente invenção diz respeito a um processo de revestimento de uma conduta metálica, em que o referido processo compreende as etapas seguintes: (i) processamento de uma composição de fluoropolimero termoplástico para produzir um revestimento de tubagem possuindo um diâmetro externo maior do que o diâmetro interno da referida conduta metálica, em que a referida composição de fluoropolímero termoplástico compreende: (a) desde 10 % até 60 % em peso, no peso total do polímero (a) e polímero (b), de pelo menos um homopolímero de fluoreto de vinilideno (vdf) [poiímero (a)], (b) desde 40 % até 90 % em peso, com base no peso total do polímero (a) e polímero (b), de pelo menos um copolímero de vdf compreendendo desde 2 % até 15 % em moles de unidades recorrentes derivadas de pelo menos outro comonômero fluorado (f) [polímero (b)], e (ii) deformação do referido revestimento de tubagem; (iii) introdução do revestimento de tubagem deformado na referida conduta metálica; e (iv) expansão do revestimento de tubagem deformado para se ajustar ao diâmetro interno da referida conduta metálica. a presente invenção também se refere a um sistema de condutas.

Polymeric compositions comprising vdf polymers and graphite

The present invention relates to a polymeric composition comprising: one or more vinylidene fluoride (VDF) polymers, from 1 to 100 parts, preferably from 2 to 50 parts, more preferably from 2 to 30 parts, even more preferably from 3 to 20 parts by weight for 100 parts of VDF polymer of a plurality of particles of graphite, wherein said particles of graphite have an D90 particle size as measured with laser scattering of less than 50µm, preferably from 2 to 30 µm more preferably from 2 to 20 µm, even more preferably from 2 to 10 µm and a BET specific surface of from 10 to 50 m 2 /g, preferably 15 to 35 m 2 /g. The invention also relates to tubular articles comprising the composition and to their use in oil and gas operations.

Polymeric compositions comprising vdf polymers and graphite

The present invention relates to a polymeric composition comprising: one or more vinylidene fluoride (VDF) polymers, from 1 to 100 parts, preferably from 2 to 50 parts, more preferably from 2 to 30 parts, even more preferably from 3 to 20 parts by weight for 100 parts of VDF polymer of a plurality of particles of graphite, wherein said particles of graphite have an D90 particle size as measured with laser scattering of less than 50 μm, preferably from 2 to 30 μm more preferably from 2 to 20 μm, even more preferably from 2 to 10 μm and a BET specific surface of from 10 to 50 m2/g, preferably 15 to 35 m2/g. The invention also relates to tubular articles comprising the composition and to their use in oil and gas operations.

Fluorine-containing thermoplastic elastomer composition

Fluorine-containing thermoplastic elastomer composition

The present invention relates to a fluorine-containing thermoplastic elastomer composition comprising a continuous thermoplastic fluorocarbon polymer phase and a dispersed fluorine-containing elastomer phase which are useful, for example, in automotive fuel lines.