LAN cables

Use in LAN cable applications, as materials for the coating of the primary cable and for the external jacket, of TFE thermoprocessable perfluoropolymers comprising perfluoroalkylvinylethers in the following amounts, expressed as per cent by weight on the total of the monomers: a) 0-5.5 % of perfluoromethylvinylether (PMVE); b) 0.4-4.5 % of perfluoroethylvinylether (PEVE) and/or perfluoropropylvinylether (PPVE); when a) is present, then a) + b) ranges from 1.5 % to 5.5 % by weight on the total of the monomers; optionally c) 0-6 % of hexafluoropropene (HFP); the TFE amount being the complement to 100 % by weight.

Thermoprocessable per(halo)fluoropolymer composition

The invention pertains to a thermoprocessable composition comprising: at least one thermoprocessable per(halo)fluoropolymer [polymer (A)]; at least one inorganic filler [filler (I)]; and at least one perfluoropolyether block copolymer [polymer (E)] comprising: A) one or more (per)fluoropolyoxyalkylene segment (chain Rf), that is to say a segment comprising recurring units having at least one catenary ether bond and at least one fluorocarbon moiety, and B) one or more polyalkylene segment (chain Ra) comprising recurring units of formula: -(CR1R2-CR3R4)- wherein R1, R2, R3, R4, equal to or different from each other, are selected from the group consisting of H, halogens (preferably F, CI), C1-C6 (hydro)carbon groups, optionally containing fluorine or other heteroatoms, preferably perfluoroalkyi or (per)fluorooxyalkyl.

Foamable fluoropolymer compositions

The invention pertains to foamable thermoplastic fluoropolymer composition comprising: - at least one fluoropolymer [polymer (A)]; and - at least one perfluoroalkoxysulphonic derivative of either of formulae: (Xn+)1/n -O3S-CF2CF2O-Rd f-OCF2CF2-SO3-(Xn+)1/n and Rm f-OCF2CF2-SO3-(Xn+)1/n wherein Rd f is a divalent C1-C12 perfluorocarbon group, possibly comprising one or more ethereal oxygen atom;Rmf is a monovalent C1-C12 perfluorocarbon group, possibly comprising one or more ethereal oxygen atom, optionally comprising heteroatoms, generally selected from S, N, P; X = H, a metal cation, or an ammonium group; n is the valence of the cation X, preferably 1 or 2.

Foamable fluoropolymer compositions

The invention pertains to foamable thermoplastic fluoropolymer composition comprising: 3. The foamable thermoplastic fluoropolymer composition of claim 2 , wherein perfluoroalkoxysulphonic derivative is selected from the group consisting of the following compounds: CF—CF—OCFCF—SOK claim 2 , CF—CF—OCFCF—SONa claim 2 , CF—CF—OCFCF—SONH claim 2 , (CF—CF—OCFCF—SO)Ba claim 2 , (CF—CF—OCFCF—SO)Ca claim 2 , CF—OCFCF—OCFCF—SOK claim 2 , CF—OCFCF—OCFCF—SONa claim 2 , CF—OCFCF—OCFCF—SONH claim 2 , (CF—OCFCF—OCFCF—SO)Ba claim 2 , (CF—CFCF—OCFCF—SO)Ca claim 2 , CFCF—OCFCF(CF)—OCFCF—SOK claim 2 , CFCF—OCFCF(CF)—OCFCF—SONa claim 2 , CFCF—OCFCF(CF)—OCFCF—SONH claim 2 , (CFCF—OCFCF(CF)—OCFCF—SO)Ba and (CFCF—OCFCF(CF)—OCFCF—SO)Ca.4. The foamable thermoplastic fluoropolymer composition according to wherein the perfluoroalkoxysulphonic derivative from 1 to about 3 000 ppm claim 1 , by weight based on the total weight of the composition.6. The foamable thermoplastic fluoropolymer composition according to claim 5 , wherein said polymer (A) is a per(halo)fluoropolymer substantially free from hydrogen atoms.8. The foamable thermoplastic fluoropolymer composition according to claim 7 , wherein said polymer (A) is a TFE copolymer comprising recurring units derived from at least one per(halo)fluoromonomer (PFM) selected from the group consisting of:{'sub': 2', 'f1', 'f1', '1', '6, '1. per(halo)fluoroalkylvinylethers complying with general formula CF═CFORwherein Ris a C-Cper(halo)fluoroalkyl;'}{'sub': 2', '01', '01', '1', '12, '2. per(halo)fluoro-oxyalkylvinylethers complying with general formula CF═CFOX, wherein Xis a C-Cper(halo)fluorooxyalkyl having one or more ether groups;'}{'sub': 3', '8, '3. C-Cperfluoroolefins; and'}4. mixtures thereof9. The foamable thermoplastic fluoropolymer composition according to claim 8 , wherein said polymer (A) is selected from the group consisting of TFE copolymers consisting essentially of recurring units derived from tetrafluoroethylene (TFE) and ...

Thermoprocessable per(halo)fluoropolymer composition

The invention pertains to a thermoprocessable composition comprising: at least one thermoprocessable per(halo)fluoropolymer [polymer (A)]; at least one inorganic filler [filler (I)]; and at least one perfluoropolyether block copolymer [polymer (E)] comprising: A) one or more (per)fluoropolyoxyalkylene segment (chain R f ), that is to say a segment comprising recurring units having at least one catenary ether bond and at least one fluorocarbon moiety, and B) one or more polyalkylene segment (chain R a ) comprising recurring units of formula: —(CR 1 R 2 —CR 3 R 4 )— wherein R 1 , R 2 , R 3 , R 4 , equal to or different from each other, are selected from the group consisting of H, halogens (preferably F, Cl); C 1 -C 6 (hydro)carbon groups, optionally containing fluorine or other heteroatoms, preferably perfluoroalkyl or (per)fluorooxyalkyl.

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: 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: 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 ...

ARTICLE AND METHOD FOR ITS MANUFACTURE

The present invention relates to a multi-layered article made from a perfluoropolymer and to a method for its manufacturing, the multi-layered article being made of a composition (C) comprising at least one melt-processable fully fluorinated polymer (FMP), said article having at least one surface (S) comprising:—at least one molecule grafted onto said surface (S), said molecule comprising at least one nitrogen atom and at least one carbon atom, and—at least one layer (LI) adhered to said surface (S) comprising at least one metal compound (M). 1. A multi-layered article made of a composition (C) , wherein composition (C) comprises at least one melt-processable fully fluorinated polymer (F) , said article having at least one surface (S) comprising:at least one molecule grafted onto said surface (S), said molecule comprising at least one nitrogen atom and at least one carbon atom, andat least one layer (L1) adhered to said surface (S) comprising at least one metal compound (M).3. The multi-layered article according to claim 1 , wherein said polymer (F) is selected from group consisting of semi-crystalline perfluoro-polymers (F) claim 1 , perfluoro-elastomers [polymer (F)] and perfluorinated thermoplastic elastomers [polymer (F)].4. The multi-layered article according to claim 3 , wherein said polymer (F) comprises recurring units derived from TFE and recurring units derived from at least one comonomer (F) claim 3 , wherein comonomer (F) is at least one perfluorinated monomer different from TFE.6. The multi-layered article according to claim 3 , wherein:{'sub': 'MP-PFE', '(A) said polymer (F) is selected from those having the following compositions (wherein the amounts are expressed in mol %)(i) tetrafluoroethylene (TFE) 50-80%, perfluoroalkyl vinyl ethers (PAVE) 20-50%, bis-olefin (OF) 0-5%;(ii) tetrafluoroethylene (TFE) 20-70%, fluorovinyl ethers (MOVE) 30-80%, perfluoroalkyl vinyl ethers (PAVE) 0-50%, bis-olefin (OF) 0-5%; and{'sub': 'MP-TPE', 'claim-text': {'sub': A ...

FLUOROPOLYMER COMPOSITION FOR COMPONENTS OF LIGHT EMITTING APPARATUS

The invention pertains to a white pigmented fluoropolymer composition comprising certain thermoprocessable tetrafluoroethylene copolymers, certain amounts of specific PTFE micropowders, which possesses advantageous properties for being used for manufacturing shaped articles, and to shaped articles therefrom, including components of light emitting apparatuses, e.g. LED assemblies, including those having junctions emitting in the UV region. 116.-. (canceled)17. A fluoropolymer composition [composition (C)] comprising:(i) a major amount of at least one melt-processible perfluorinated tetrafluoroethylene copolymer [polymer (F)],{'sub': 2', '2', '4, '(ii) from 1 to less than 50% wt., with respect to the total weight of the composition (C) of at least one pigment selected from the group consisting of titanium dioxide (TiO), zinc disulfide (ZnS), zinc oxide (ZnO) and barium sulfate (BaSO) [pigment (P)];'}{'sup': '2', '(iii) from 0.5 to 20% wt., with respect to the total weight of the composition (C) of at least one PTFE micropowder possessing a B.E.T. surface area of exceeding 5.0 m/g [powder (PTFE)]; and optionally,'}(iii) at least one reinforcing filler [filler (F)], different from pigment (P).18. The composition (C) of claim 17 , wherein polymer (F) is selected from the group consisting of TFE copolymers comprising recurring units derived from hexafluoropropylene (HFP) and optionally from at least one CF═CFORperfluoroalkylvinylether (PAVE) claim 17 , wherein Ris a C-Cperfluoroalkyl.19. The composition (C) of claim 17 , wherein the polymer (F) is selected from the group consisting of TFE copolymers comprising recurring units derived from at least one CF═CFORperfluoroalkylvinylether (PAVE) claim 17 , wherein Ris a C-Cperfluoroalkyl claim 17 , and optionally further comprising recurring units derived from at least one C-Cperfluoroolefin.20. The composition (C) of claim 19 , wherein polymer (F) is a TFE/PMVE copolymer consisting essentially of:(a) from 3 to 13%, preferably ...

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 ...

PERFLUORINATED THERMOPLASTIC ELASTOMER

The invention pertains to certain perfluorinated thermoplastic elastomers suitable for being processed through additive manufacturing techniques, thanks to their surprising ability to possess better processability (notably more significant shear thinning at processability temperature) than corresponding perfluorinated thermoplasts, which possess similar product profile and hence performances, offering hence advantages in throughput and part design accurate control, containment of degradation, reduction of fumes, and yet delivering parts with outstanding chemical resistance. 1. A perfluorinated thermoplastic elastomer comprising:{'sub': A', 'B', 'C', 'D', 'E', 'F, 'at least one elastomeric block (A) consisting of a sequence of recurring units derived from tetrafluoroethylene (TFE) and recurring units derived from at least one perfluorinated monomer other than TFE, and optionally of a minor amount of recurring units derived from at least one bis-olefin (OF) of formula RR═CR-T-CR═RR,'}{'sub': A', 'B', 'C', 'D', 'E', 'F', '1', '5', '1', '5', '1', '18, 'wherein R, R, R, R, Rand R, equal to or different from each other, are selected from the group consisting of H, F, Cl, C-Calkyl groups and C-C(per)fluoroalkyl groups, and T is a linear or branched C-Calkylene or cycloalkylene group, optionally comprising one or more than one ethereal oxygen atom and optionally at least partially fluorinated, or a (per)fluoropolyoxyalkylene group, wherein the molar percentage of recurring units derived from TFE in block (A) is comprised between 40 and 82% moles, with respect to the total moles of recurring units of the said block (A), and'} 'at least one thermoplastic block (B) consisting of a sequence of recurring units derived from tetrafluoroethylene (TFE) and recurring units derived from at least one perfluorinated monomer other than TFE,', 'wherein said block (A) possesses a glass transition temperature of less than 25° C., as determined according to ASTM D3418, and'}wherein the molar ...

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 ...

Fluoropolymer composition

The invention pertains to a fluoropolymer composition comprising: —at least one fluoropolymer [polymer (A)]; —at least one benzoxazine compound [compound (B)] of formula (I), wherein each of R a , equal to or different at each occurrence, is H or a C 1 -C 12 alkyl group; R b is a C 1 -C 36 hydrocarbon group, possibly comprising heteroatoms, optionally comprising at least one benzoxazine group; j is zero or an integer of 1 to 4; each of R c , equal or different at each occurrence, is a halogen or a C 1 -C 36 hydrocarbon group, possibly comprising heteroatoms, optionally comprising at least one benzoxazine group; —at least one aromatic polyimide polymer [polymer (PI)]; —at least one organic solvent [solvent (S)], and to a method for coating a surface, specifically a metal surface, with a fluoropolymer, using said fluoropolymer composition.

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. 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 ...

Multi-layered article

The present invention relates to a multi-layered article comprising a metal part and a coating, having outstanding adhesion between said coating and said metal part, even in severe environment conditions, such as marine environment, high pressure and high temperature.

MULTILAYER ASSEMBLY

The present invention pertains to a multilayer assembly, to a process for the manufacture of said multilayer assembly, to a pipe comprising said multilayer assembly and to uses of said pipe in various applications. 1. A multilayer assembly comprising:a metal substrate, said metal substrate having an inner surface and an outer surface,a layer (L1) consisting of a composition (C1) comprising at least one polymer (F), wherein polymer (F) is a fluoropolymer, at least one benzoxazine compound (B) and at least one aromatic polymer (P),said layer (L1) having a first surface and a second surface, wherein the first surface of layer (L1) is at least partially adhered to at least one of the inner surface and the outer surface of said metal substrate, anda layer (L2) consisting of a composition (C2) comprising at least one functional polymer (F), wherein functional polymer (F) is a functional fluoropolymer comprising one or more polar functional groups,said layer (L2) having a first surface and a second surface, wherein the first surface of layer (L2) is at least partially adhered to the second surface of said layer (L1).2. The multilayer assembly according to claim 1 , wherein polymer (F) of the composition (C1) is selected from the group consisting of copolymers of tetrafluoroethylene (TFE) with at least one per(halo)fluoromonomer (PFM) different from TFE.3. The multilayer assembly according to claim 1 , wherein polymer (F) of composition (C1) is a TFE copolymer comprising at least 0.5% by weight of recurring units derived from at least one per(halo)fluoromonomer (PFM).4. The multilayer assembly according to claim 1 , wherein the polymer (F) of the composition (C1) is a TFE copolymer comprising at most 30% by weight of recurring units derived from at least one per(halo)fluoromonomer (PFM).5. The multilayer assembly according to claim 1 , wherein polymer (F) of composition (C1) is selected from the group consisting of copolymers of tetrafluoroethylene (TFE) with at least one ...

METHOD FOR MANUFACTURING A THREE-DIMENSIONAL OBJECT

The invention pertains to a method for manufacturing three-dimensional objects via an additive manufacturing system, using a fluorinated thermoplastic elastomer, delivering hence advantages over corresponding thermoplasts in throughput and part design accurate control, containment of degradation, reduction of fumes, and yet delivering parts with outstanding chemical and thermal resistance. 1. A method for manufacturing a three-dimensional object [object (3D)] using an additive manufacturing system , comprising:generating a digital representation of the three-dimensional object, and slicing the same into multiple horizontal layers, so as to generate printing instructions for each of the said horizontal layers; at least one elastomeric block (A) consisting of a sequence of recurring units, said sequence comprising recurring units derived from at least one fluorinated monomer, said block (A) possessing a glass transition temperature of less than 25° C., as determined according to ASTM D3418: and', 'at least one thermoplastic block (B) consisting of a sequence of recurring units, said sequence comprising recurring units derived from at least one fluorinated monomer,', 'wherein the crystallinity of said block (B) and its weight fraction in the polymer (F-TPE) are such to provide for a heat of fusion of the polymer (F-TPE) of at least 2.5 J/g, when determined according to ASTM D3418., 'printing layers of the object (3D) from a composition (C), wherein composition (C) is a part material comprising at least one fluorinated thermoplastic elastomer [polymer (F-TPE)], wherein polymer (F-TPE) comprises2. The method of claim 1 , wherein polymer (F-TPE) comprises:at least one elastomeric block (A) selected from the group consisting of:{'sub': 'VDF', '(1) vinylidene fluoride (VDF)-based elastomeric blocks (A) consisting of a sequence of recurring units, said sequence comprising recurring units derived from VDF and recurring units derived from at least one fluorinated monomer ...

TFE Polymerization process

PERFLURODIOSSOLS THEIR HOMOPOLYMERS AND COPOLYMERS AND THEIR USE FOR THE COATING OF ELECTRIC CABLES

L'INVENZIONE RIGUARDA NUOVI COPOLIMERI TERMOPROCESSABILI DEL TETRAFLUOROETILENE COSTITUITI DA PERFLUOROMETILVINILETERE (0,5-13% IN PESO), UN DIOSSOLO FLUORATO (0,05-3%) E TETRAFLUOROETILENE (DIFFERENZA A 100%) E IL LORO IMPIEGO PER LA PREPARAZIONE MEDIANTE ESTRUSIONE, DI RIVESTIMENTI DI CAVI ELETTRICI.RIGUARDA PURE NUOVI PERFLUORODIOSSILI DI FORMULA FORMULA I IN CUI RF E' UN RADICALE PERFLUOROALCHILICO C1-C5;X1 E X2 RAPPRESENTANO, INDIPENDENTEMENTE, F O CF3;E LORO OMOPOLIMERI E COPOLIMERI, IN PARTICOLARE I COPOLIMERI TERMOPROCESSABILI COME DEFINITI SOPRA.

DIOXIDE-BASED PERFLUOROELASTOMERS

Ethylene copolymers with tetrafluoroethylene and/or chlorotrifluorethylene having improved mechanical properties at high temperatures

Copolymers comprising: (A) from 30 to 70% by moles of ethylene; (B) from 30 to 70% by moles of a fluorinated monomer selected from tetrafluoroethylene, chlorotrifluoroethylene, or their mixtures; (C) from 0.1 to 10% by moles with respect to the total amount of monomers (A) and (B), of a fluorodioxol having the formula: ##STR1## wherein R F is a perfluoroalkyl having from 1 to 5 carbon atoms; X 1 and X 2 , equal to or different from each other, are --F or --CF 3 ; Z is selected from --F, --H, --Cl.

TFE polymerization process

Process for the preparation of tetrafluoroethylene (TFE) polymer-based dispersions having diameter average sizes in the range 0.005-0.06 μm, which comprises: a) preparation of an aqueous perfluoropolyether (PFPE) microemulsion; b) microemulsion feeding into the polymerization reactor, in such amounts so that the microemulsion perfluoropolyetheral oil phase is present in a concentration higher than 2 ml for liter of reaction medium; c) reaction medium feeding in the gaseous TFE polymerization reactor, optional addition of surfactants, stabilizers, comonomers, transfer agents; d) addition of the initiator, stabilizers, comonomers and transfer agents; e) discharge from the reactor of the polymeric latex.

POLYMERIZATION PROCESS OF TFE

Process for preparing tetrafluoroethylene copolymers with other perfluorinated monomers

ABSTRACT "Process for preparing tetrafluoroethylene copolymers with other perfluorinated monomers" The invention relates to a process for obtaining copolymers of tetrafluoroethylene with one or more perfluorinated mo-nomers having ethylenic unsaturation, said copolymers having only carboxylic or carboxylate groups as unstable end groups, by polymerization in aqueous emulsion in the presen-ce of a dispersing agent. The process is characterized in that CHF2-CH3 is used as chain transfer agent, and an inorga-nic peroxidic compound is used as initiator. The carboxylic or carboxylate groups are successively tran-sformed into stable groups of the -CF2H type by known stabi-lizing treatments.

Perfluorodioxoles, the preparation process thereof, and homopolymers and copolymers obtained therefrom

The invention relates to new thermoprocessable copolymers of tetrafluoroethylene constituted by perfluoromethylvinylether (0.5-13% by weight), a fluorinated dioxole (0.05-3%) and tetrafluoroethylene (difference to 100%), particularly useful for coating electric cables by melt extrusion. It relates also to new perfluorodioxoles of formula wherein R F is a C₁-C₅ perfluoroalkyl radical; X₁ and X₂ are, independently from each other, F or CF₃; and their homopolymers and copolymers, in particular thermoprocessable copolymers as defined above.

NEW PERFLUORODIOXOLES, PROCESS FOR ITS PREPARATION AND HOMOPOLYMERS AND COPOLYMERS OBTAINED FROM THESE PERFLUORODIOXOLES.

La presente invención se refiere a nuevos copolímeros termoprocesables detetrafluoroetileno constituidos por perfluorometilviniléter (0.5-13% enpeso), un dioxol fluorado (0.05-3%) y tetrafluoroetileno (diferencia hasta100%), particularmente útiles para revestir cables eléctricos porextrusión por fusión. También se refiere a nuevos perfluorodioxoles de lafórmula, en donde RF es un radical perfluoroalquilo de 1 a 5 átomos decarbono: X1 y X2 son, independientemente uno del otro, F o CF3; y sushomopolímeros y copolímeros, en particular copolímeros termoprocesablescomo los ya definidos.

Perfluorodioxoles, their production and their homopolymers and copolymers

TFE copolymers

Copolymers formed by TFE and FMVE containing FMVE in percent by moles from 2.5% to 8%; the % TFE moles being the complement to 100% of the FMVE moles.

PROCEDURE FOR THE PREPARATION OF TETRAFLUOROETHYLENE COPOLYMERS WITH OTHER FLUORINATED MONOMERS

Foamable fluoropolymer compositions

PERFLURODIOXIS THEIR HOMOPOLYMERS AND COPOLYMERS AND THEIR USE FOR THE COATING OF ELECTRIC CABLES

NEW PERFLURODIOXIS THEIR HOMOPOLYMERS AND COPOLYMERS AND THEIR USE FOR THE COATING OF ELECTRIC CABLES

Tetrafluoroethylene thermoprocessable copolymers

PROCESS OF (CO) POLYMERIZATION IN AQUEOUS EMULSION OF FLUORINATED OLEFINIC MONOMERS

Article and method for its manufacture

The present invention relates to a multi-layered article made from a perfluoropolymer and to a method for its manufacturing, the multi-layered article being made of a composition (C) comprising at least one melt-processable fully fluorinated polymer (FMP), said article having at least one surface (S) comprising: - at least one molecule grafted onto said surface (S), said molecule comprising at least one nitrogen atom and at least one carbon atom, and - at least one layer (LI) adhered to said surface (S) comprising at least one metal compound (M).

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.

Amorphous perfluoropolymers

Use of amorphous perfluoropolymers based on homopolymers of the TTD dioxole or its amorphous copolymers to prepare solutions in fluoro-containing solvents, to obtain solutions for coatings, wherein TTD has the formula: (see above formula) wherein R F is a perfluoroalkylic radical with 1-5 carbon atoms, linear or branched when possible; X1 and X2 equal to or different from each other being F or CF3; the TTD amount ranges from 40 to 100W by moles.

fluoropolymer

THERMOPROCESSABLE TETRAFLUOROETHYLENE COPOLINERS

Perfluorinated thermoplastic elastomer

Multilayer assembly

A method of coating an article by the use of solutions of amorphous perfluoropolymers

(Co)polymerization process in aqueous emulsion of fluorinated olefinic monomers

Lan cables

Use in LAN cable applications, as materials for the coating of the primary cable and for the external jacket, of TFE thermoprocessable perfluoropolymers comprising perfluoroalkylvinylethers in the following amounts, expressed as percent by weight on the total of the monomers: a) 0-5.5% of perfluoromethylvinylether (PMVE); b) 0.4-4.5% of perfluoroethylvinylether (PEVE) and/or perfluoropropylvinylether (PPVE); when a) is present, then a)+b) ranges from 1.5% to 5.5% by weight on the total of the monomers; optionally c) 0-6% of hexafluoropropene (HFP); the TFE amount being the complement to 100% by weight.

Perfluorinated thermoplastic elastomer

The invention pertains to certain perfluorinated thermoplastic elastomers suitable for being processed through additive manufacturing techniques, thanks to their surprising ability to possess better processability (notably more significant shear thinning at processability temperature) than corresponding perfluorinated thermoplasts, which possess similar product profile and hence performances, offering hence advantages in throughput and part design accurate control, containment of degradation, reduction of fumes, and yet delivering parts with outstanding chemical resistance.

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.

Foamable fluoropolymer compositions

The invention pertains to foamable thermoplastic fluoropolymer composition comprising: at least one fluoropolymer [polymer (A)]; and at least one perfluoroalkoxysulphonic derivative of either of formulae: (X n+ ) 1/n − O 3 S—CF 2 CF 2 O—R d f —OCF 2 CF 2 —SO 3 − (X n+ ) 1/n and R m f —OCF 2 CF 2 —SO 3 − (X n+ ) 1/n wherein R d f is a divalent C 1 -C 12 perfluorocarbon group, possibly comprising one or more ethereal oxygen atom; R m f is a monovalent C 1 -C 12 perfluorocarbon group, possibly comprising one or more ethereal oxygen atom, optionally comprising heteroatoms, generally selected from S, N, P; X=H, a metal cation, or an ammonium group; n is the valence of the cation X, preferably 1 or 2.

Fluoropolymer composition for components of light emitting apparatuses

The invention pertains to a fluoropolymer composition comprising certain tetrafluoroethylene/perfluoromethyvinylether copolymers having well-defined TFE/MVE monomer composition and possessing low molecular weight and a white pigment, to the use of this latter for manufacturing shaped articles, and to shaped articles therefrom, including components of light emitting apparatuses, e.g. LED assemblies.

Amorphous perfluoropolymers

Use of amorphous perfluoropolymers based on homopolymers of the TTD dioxole or its amorphous copolymers to prepare solutions in fluoro-containing solvents, to obtain solutions for coatings, wherein TTD has the formula: wherein R F is a perfluoroalkylic radical with 1-5 carbon atoms, linear or branched when possible; X 1 and X 2 equal to or different from each other being F or CF 3 ; the TTD amount ranges from 40 to 100% by moles.

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.

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.

Article and method for its manufacture

The present invention relates to a multi-layered article made from a perfluoropolymer and to a method for its manufacturing, the multi-layered article being made of a composition (C) comprising at least one melt-processable fully fluorinated polymer (FMP), said article having at least one surface (S) comprising: - at least one molecule grafted onto said surface (S), said molecule comprising at least one nitrogen atom and at least one carbon atom, and - at least one layer (LI) adhered to said surface (S) comprising at least one metal compound (M).

Multilayer assembly

The present invention pertains to a multilayer assembly, to a process for the manufacture of said multilayer assembly, to a pipe comprising said multilayer assembly and to uses of said pipe in various applications.

Fluoropolymer composition

The invention pertains to a fluoropolymer composition comprising certain thermoprocessable tetrafluoroethylene copolymers, certain amounts of graphite particles, to the use of this latter for manufacturing shaped articles, and to shaped articles therefrom, including components for heat exchangers, e.g. conduits used for cooling and/or heating fluids, e.g. gas flows in flue gas desulphurization units.

Procedimento per la preparazione di copolimeri del tetrafluoroetilene con altri monomeri perfluorurati

Verfahren zur beschichtung eines artikels durch die anwendung von lösungen von amorphen perfluorpolymeren

Insulating assembly parts for batteries comprising fluoropolymers

The invention pertains to an insulating assembly part for an electrochemical cell comprising one or more fluoropolymers, said fluoropolymers comprising - 87-99 % by moles of recurring units derived from tetrafluoroethylene (TFE)- 1-13 % by moles of recurring units derived from perfluoro methyl vinyl ether (PMVE) - 0-3 % by moles of recurring units derived from perfluoropropyl vinyl ether (PPVE)and having a melt flow rate (MFR) of from 40 to 300 g/10min (measured at 372°C under a 5kg load).

Copolineri dell'etilene con tetrafluoroetilene e/o clorotrifluoroeti- lene,aventi migliorate proprieta' meccaniche alle alte temperature

Nuovi perflurodiossoli loro omopolimeri e copolimeri e loro impiego per il rivestimento di cavi elettrici

(co)polymerisation aus fluorierten olefinischen monomeren in wässriger emulsion

Fluoropolymer composition

The invention pertains to a fluoropolymer composition comprising certain thermoprocessable tetrafluoroethylene copolymers, certain amounts of graphite particles, to the use of this latter for manufacturing shaped articles, and to shaped articles therefrom, including components for heat exchangers, e.g. conduits used for cooling and/or heating fluids, e.g. gas flows in flue gas desulphurization units.

Thermisch verarbeitbare tetrafluorethylencopolymere

Perfluorodioxole, ihre herstellung und deren homopolymere und copolymere

Processo di (co)polimerizzazione in emulsione acquosa di monomeri olefinici fluorurati

Fluoropolymer composition

The invention pertains to a fluoropolymer composition comprising certain thermoprocessable tetrafluoroethylene copolymers, certain amounts of graphite particles, to the use of this latter for manufacturing shaped articles, and to shaped articles therefrom, including components for heat exchangers, e.g. conduits used for cooling and/or heating fluids, e.g. gas flows in flue gas desulphurization units.

Multi-layered article

The present invention relates to a multi-layered article comprising a metal part and a coating, having outstanding adhesion between said coating and said metal part, even in severe environment conditions, such as marine environment, high pressure and high temperature.

Ｔｆｅの熱処理可能なコポリマー

(57)【要約】 【課題】 半導体産業において、以下の特性の組み合わ せ：室温（23℃）で、射出成形品のウエルドライン上で 測定される優れた機械的特性、ポリマー重量に対し1重 量ppm以下の、ポリマーペレットについてのF - 遊離値、 ポリマー重量に対し0.2重量ppm未満の、抽出可能なCl - の値、5.10 -4 モル/ポリマーkg以下の、イオン末端基の 量、250℃の温度までの優れた熱機械的特性を有する製 品を製造することができる熱処理可能なフルオロポリマ ーを入手することを課題とする。 【解決手段】 以下のモノマー：（a）FMVE、（b）式： 【化１】 のパーフルオロジオキソール［ここで、組成物A)および B)における100重量％に対する差補は、TFEである］によ って本質的に形成されるTFEの熱処理可能なコポリマー により上記の課題を解決する。

Copolineri termoprocessabili del tetrafluoroetilene

Thermoprocessable copolymers of tetrafluorethene, dioxole and vinylether

Thermoprocessable copolymers of TFE essentially formed by the following monomers: (a) FMVE; (b) a perfluorodioxole of formula: the complement to 100% by weight in compositions A) and B) being TFE.

Thermoprocessable copolymers of tetrafluorethene, dioxole and vinylether

Fluoropolymer composition for components of light emitting apparatus

The invention pertains to a white pigmented fluoropolymer composition comprising certain thermoprocessable tetrafluoroethylene copolymers, certain amounts of specific PTFE micropowders, which possesses advantageous properties for being used for manufacturing shaped articles, and to shaped articles therefrom, including components of light emitting apparatuses, e.g. LED assemblies, including those having junctions emitting in the UV region.

Insulating assembly parts for batteries comprising fluoropolymers

The invention pertains to an insulating assembly part for an electrochemical cell comprising one or more fluoropolymers, said fluoropolymers comprising —87-99% by moles of recurring units derived from tetrafluoroethylene (TFE) —1-13% by moles of recurring units derived from perfluoro methyl vinyl ether (PMVE) —0-3% by moles of recurring units derived from perfluoropropyl vinyl ether (PPVE) and having a melt flow rate (MFR) of from 40 to 300 g/10 min (measured at 372° C. under a 5 kg load).

Fluoropolymer composition

The invention pertains to a fluoropolymer composition comprising: - at least one fluoropolymer [polymer (A)]; - at least one benzoxazine compound [compound (B)] of formula (I), wherein each of Ra, equal to or different at each occurrence, is H or a C1-C12 alkyl group; Rb is a C1-C36 hydrocarbon group, possibly comprising heteroatoms, optionally comprising at least one benzoxazine group; j is zero or an integer of 1 to 4; each of Rc, equal or different at each occurrence, is a halogen or a C1-C36 hydrocarbon group, possibly comprising heteroatoms, optionally comprising at least one benzoxazine group; - at least one aromatic polyimide polymer [polymer (PI)]; - at least one organic solvent [solvent (S)], and to a method for coating a surface, specifically a metal surface, with a fluoropolymer, using said fluoropolymer composition.

Method for manufacturing a three-dimensional object

The invention pertains to a method for manufacturing three-dimensional objects via an additive manufacturing system, using a fluorinated thermoplastic elastomer, delivering hence advantages over corresponding thermoplasts in throughput and part design accurate control, containment of degradation, reduction of fumes, and yet delivering parts with outstanding chemical and thermal resistance.

Copolymere aus ethylen und tetrafluorethylen und/oder chlortrifluorethylen mit verbesserten mechanischen eigenschaften bei hohen temperaturen

Wärmeverarbeitbare Copolymere aus Tetrafluorethen, Dioxol und Vinylether

Verfahren zur herstellung von tetrafluorethylencopolymeren mit anderen perfluormonomeren