Classifications

• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G81/00—Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/022—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the choice of material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
  • B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
  • B29C48/10—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels flexible, e.g. blown foils
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
  • C08G69/40—Polyamides containing oxygen in the form of ether groups
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
  • C08J5/18—Manufacture of films or sheets
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
  • C08K5/00—Use of organic ingredients
  • C08K5/04—Oxygen-containing compounds
  • C08K5/05—Alcohols; Metal alcoholates
  • C08K5/053—Polyhydroxylic alcohols
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
  • C08L77/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
  • C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
  • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
  • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
  • B29C48/07—Flat, e.g. panels
  • B29C48/08—Flat, e.g. panels flexible, e.g. films
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
  • B29K2071/00—Use of polyethers, e.g. PEEK, i.e. polyether-etherketone or PEK, i.e. polyetherketone or derivatives thereof, as moulding material
  • B29K2071/02—Polyalkylene oxides, e.g. PEO, i.e. polyethylene oxide, or derivatives thereof
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
  • B29K2077/00—Use of PA, i.e. polyamides, e.g. polyesteramides or derivatives thereof, as moulding material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
  • B29K2096/00—Use of specified macromolecular materials not provided for in a single one of main groups B29K2001/00 - B29K2095/00, as moulding material
  • B29K2096/04—Block polymers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
  • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
  • B29K2105/0085—Copolymers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
  • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
  • B29K2105/0094—Condition, form or state of moulded material or of the material to be shaped having particular viscosity
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
  • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
  • B29K2995/0037—Other properties
  • B29K2995/0065—Permeability to gases
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
  • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
  • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
  • B29K2995/0037—Other properties
  • B29K2995/0088—Molecular weight
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J2371/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
  • C08J2371/02—Polyalkylene oxides
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
  • C08J2377/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J2387/00—Characterised by the use of unspecified macromolecular compounds, obtained otherwise than by polymerisation reactions only involving unsaturated carbon-to-carbon bonds
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J2471/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
  • C08J2471/02—Polyalkylene oxides
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
  • C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
  • C08J2477/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers

Definitions

• the present invention relates to block copolymer compositions, easily extrudable, including waterproof breathable films, and their method of manufacture. These compositions permeable to water vapor can be used especially in the food field, sports equipment, or in the building, especially as insulation material under the roof of homes and for the insulation of walls.
• polymer films having a sufficient permeability to water vapor it is important to have polymer films having a sufficient permeability to water vapor, to allow for example the preparation, cooking, smoking of food, and / or packaging.
• an increase in the content of polyether groups makes it possible to increase the permeability to water vapor of these copolymers.
• PEBA polyamide block and polyether block copolymers
• These PEBAs belong to the particular class of polyetheresteramides when they result from the copolycondensation of polyamide sequences with reactive carboxyl ends with polyether sequences with reactive ends, which are polyether polyols (polyetherdiols), the bonds between the polyamide blocks and the polyether flexible blocks. being ester bonds.
• PEBAs are known for their physical properties such as their flexibility, their impact strength, and their ease of implementation by injection.
• copolymers are difficult to process by extrusion, in particular because of a low melt viscosity and a low melt strength resulting therefrom.
• a material with a Low melt strength can lead in particular to deforming parts before curing on cooling.
• melt viscosity by lengthening the polymer chains, for example by prolonging the polymerization.
• This approach has been disappointing because of the degradation of the PEG blocks, which further causes a coloration (yellowing) of the material, without being able to reach the desired levels of melt viscosity, of at least 300 Pa.s, measured according to ISO 1621-10: 2015.
• the object of the invention is therefore to provide compositions based on extrudable block copolymers for producing objects, such as films, having a high water vapor permeability, corresponding to the meaning of the invention to a MVTR of at least 700 g / m 2, preferably at least 800 g / m 2, or even at least 1000 g / m 2, per 24 hours at 23 ° C for a relative humidity of 50% and a sample thickness of 30 ⁇ , measured according to ASTM E96B.
• the subject of the present invention is therefore an extrudable polymer composition comprising:
• PEG polyethylene glycol
• the weight average molar mass of said copolymer is at least equal to 100,000 g / mol.
• thermoplastic elastomeric polymers TPE
• a block is said to be “flexible” if it has a low glass transition temperature (Tg).
• Tg glass transition temperature
• Tg glass transition temperature
• Flexible or soft blocks that can be envisaged in the copolymer according to the invention are especially those selected from polyether blocks, polyester blocks, polysiloxane blocks, such as polydimethylsiloxane or PDMS blocks, polyolefin blocks, polycarbonate blocks, and their mixtures.
• the flexible blocks that can be envisaged are described, for example, in French Patent Application No. 0950637, page 32 line 3 to page 38 line 23.
• the polyether blocks are chosen from polyethylene glycol (PEG), poly (1,2-propylene glycol) (PPG), poly (1,3-propylene glycol) (PO 3 G), poly (tetramethylene glycol) (PTMG), and copolymers or mixtures thereof.
• the rigid blocks may be based on polyamide, polyurethane, polyester or a mixture of these polymers. These blocks are described in particular in the French patent application No. 0856752.
• the rigid blocks are preferably based on polyamide.
• the polyamide blocks may comprise homopolyamides or copolyamides.
• the polyamide blocks that can be envisaged in the composition of the invention are in particular those defined in application FR0950637 of page 27 line 18 to page 31 line 14.
• Examples of polyamide blocks that may be mentioned include those comprising at least one of the following molecules: PA12, PAA, PA10.10, PA6.10, PA6, PA6 / 12, a copolyamide comprising at least one of the following monomers: 6, 11, 12, 5.4, 5.9, 5.10, 5.12, 5.13, 5.14, 5.16 , 5.18, 5.36, 6.4, 6.6, 6.9, 6.10, 6.12, 6.13, 6.14, 6.16, 6.18, 6.36, 10.4, 10.9, 10.10, 10.12, 10.13, 10.14, 10.16, 10.18, 10.36, 10.T, 12.4, 12.9, 12.10, 12.12, 12.13, 12.14, 12.16, 12.18, 12.36, 12.T and their mixtures or copolymers.
• said at least one block copolymer comprises at least one block chosen from: polyether blocks other than PEG (in addition to the minimum amount of PEG polyethers of functionality equal to 2 according to the composition of the invention), the polyester blocks , polyamide blocks, polyurethane blocks, and mixtures thereof.
• polyether blocks other than PEG in addition to the minimum amount of PEG polyethers of functionality equal to 2 according to the composition of the invention
• the polyester blocks polyamide blocks
• polyurethane blocks and mixtures thereof.
• polyether blocks also called COPE or copolyetheresters
• polyurethane block and polyether block copolymers also called TPU abbreviation of thermoplastic polyurethanes
• copolymers with polyamide blocks and polyether blocks also called PEBA according to IUPAC, or even polyether-block-amide.
• the ratio by weight of the rigid blocks on the soft blocks of said at least one copolymer is in the range of 0.5 to 3.
• the rigid blocks of the copolymer represent from 30 to 55% by weight, and the soft blocks of the copolymer represent from 45 to 70% by weight, based on the total weight of block copolymer.
• the number-average molar mass Mn of the soft blocks of the copolymer is in the range of 500 to 3000 g / mol, preferably 800 to 2000 g / mol.
• the number-average molar mass M n of the rigid blocks of the copolymer is in the range of 500 to 3000 g / mol, preferably 800 to 2000 g / mol.
• said at least one copolymer comprises a rigid block copolymer polyamide and polyether soft blocks (PEBA), preferably a polyetheresteramide.
• said at least one copolymer of the composition of the invention comprises from 45 to 75% by weight of polyethylene glycol (PEG) flexible blocks, preferably from 50 to 70% by weight of PEG blocks, relative to the total weight of copolymer.
• PEG polyethylene glycol
• said at least one copolymer of the composition of the invention comprises at least 50% by weight of PA blocks chosen from: PA6, PA6.6, PA10.10, PA10.12, PAA, PA12, PA6 / 12 , PA6 / 6.6, and mixtures thereof.
• said at least one copolymer in the composition according to the invention is chosen from the following PEBAs: PA6-PEG, PA10.10-PEG, PA10.12-PEG, PA11-PEG, PA12-PEG, PA6 / 12-PEG , PA6.6-PEG, PA6 / 6.6-PEG, and mixtures thereof.
• the weight average molar mass of the copolymer is in the range from 100,000 to 200,000 g / mol, preferably from 100,000 to 180,000 g / mol, preferably from 100,000 to 160,000 g / mol.
• polyol of functionality greater than two is meant in particular:
• monomeric polyols especially monomeric aliphatic triols such as glycerol, trimethylolpropane, pentaerythritol, and / or
• polymeric polyols in particular polyether chain triols, polycaprolactone triols, and polyether-polyester mixed polyols with a functionality greater than 2.
• said at least one polyol is chosen from: pentaerythritol, trimethylolpropane, trimethylolethane, trimethylolpropane, hexanetriol, diglycerol, methylglucoside, tetraethanol, sorbitol, dipentaerythritol, cyclodextrin, polyetherpolyols containing at least three hydroxyl groups, and mixtures thereof.
• the addition of a polyol of higher functionality 2 causes bridging bonds interconnecting rigid blocks of the copolymer, preferably by ester bonds.
• the weight average molar mass of this polyol (s) is at most 1000 g / mol; and is generally in the range of 50 to 1000 g / mol, preferably 50 to 500 g / mol, preferably 50 to 200 g / mol.
• the extrudable composition according to the invention comprises from 0.15 to 0.2% by weight of polyol deduces on the total weight of the composition.
• the extrudable composition according to the invention advantageously comprises from 3.5 to 35 ⁇ eq / g deduces polyol on the total weight of the composition.
• the melt viscosity at 230 ° C. (Pa.s) of the composition according to the invention is greater than 300 Pa.s, preferably greater than 400 Pa.s, preferably in the range of 400. at 2000 Pa.s, preferably in the range of 500 to 2000 Pa.s, measured according to the ISO 1621-10: 2015 standard.
• composition according to the invention does not comprise a polyolefin.
• the composition according to the invention further comprises (in addition to the copolymer as defined above) from 0.1 to 80%, preferably from 0.1 to 50%, preferably from 0.1 to 20%. % by weight of at least one polyamide based on the total weight of the composition, chosen from: PA 6, PA6 / 6.6, PA6.12, PA 12, PAll, PAIO.IO, PA6, PA6.6, PA6.10, PA6 / 12, a polyamide or copolyamide comprising at least one of the following monomers: 6, 11, 12, 5.4, 5.9, 5.10, 5.12, 5.13, 5.14, 5.16, 5.18, 5.36, 6.4, 6.6, 6.9, 6.10, 6.12, 6.13, 6.14, 6.16, 6.18, 6.36, 10.4, 10.9, 10.10, 10.12, 10.13, 10.14, 10.16, 10.18, 10.36, 10.T, 12.4, 12.9, 12.10, 12.12, 12.13, 12.14, 12.16, 12.18, 12.36, 12.T and mixtures or copolymers thereof.
• the present invention also relates to an extrusion process characterized in that it uses an extrudable polymer composition according to the invention as defined above, for producing a film, a sheet, a membrane, a plate, a profile, a tube, a pipe, a hollow body, a tank, a synthetic hose, a cable, a rod, a filament, a fiber, and their mixtures.
• the composition of the invention may advantageously be blow-molded and extruded through a heated annular die.
• the present invention also relates to an extruded article or object that can be manufactured by extrusion of a composition according to the invention, said object having a water vapor permeability (MVTR) of at least 700 g / m2, preferably at least 100 g / m 2, preferably in the range of 1000 to 5000 g / m 2, per 24 hours at 23 ° C for a relative humidity of 50% and a sample thickness of 30 ⁇ , measured according to ASTM E96B.
• MVTR water vapor permeability
• this extruded object according to the invention has an absorption in saturated water at 23 ° C in the range of 50 to 500% by weight, preferably 50 to 250%, preferably 100 to 150% by weight, according to ISO 62: 2008, with respect to the composition weight according to the invention.
• the object extruded from the composition according to the invention advantageously has a modulus of tensile elasticity of less than 500 MPa, preferably in the range of 10 to 200 MPa, preferably 20 to 100 MPa, measured according to the ISO 527-2: 2012-1A.
• said object obtained by extrusion of the composition according to the invention has an instantaneous hardness in the range of 20 to 60 Shore D, preferably 30 to 50 Shore D, according to the ISO 868: 2003 standard.
• the subject of the present invention is also the use of a polymer composition according to the invention as defined above, in an extrusion device for the manufacture of an object permeable to water vapor, with advantageous properties, especially MVTR, water absorption, mechanical properties, as defined above.
• the composition according to the invention is used or additivated in polyamide, for example in PA 6, for the manufacture of sausage packaging films for cooking and / or smoking, for example fumigation).
• the composition according to the invention is used in waterproof-breathable films for the building.
• Said object is advantageously chosen from: a packaging component, in particular a food-processing component, a food packaging film, a packaging film for cooking and / or smoking, in particular sausage, and any other waterproof-breathable film, especially used in the building, a textile component, sports equipment, footwear, sports shoes, shoe sole, decoration, luggage, glasses, furniture, electrical equipment, electronics, audio-visual, computer, automotive or aeronautical equipment and / or a component of medical equipment.
• a packaging component in particular a food-processing component, a food packaging film, a packaging film for cooking and / or smoking, in particular sausage, and any other waterproof-breathable film, especially used in the building, a textile component, sports equipment, footwear, sports shoes, shoe sole, decoration, luggage, glasses, furniture, electrical equipment, electronics, audio-visual, computer, automotive or aeronautical equipment and / or a component of medical equipment.
• Copolymers used in the test compositions (examples and comparative):
• the weight average molar mass of PEBA 1 (Mw) 111,000 g / mol.
• the weight average molar mass of PEBA 1 (Mw) 112,000 g / mol.
• the weight average molar mass of PEBA 1 (Mw) 144,000 g / mol.
• compositions according to the present invention are not limited to this embodiment, but may include any type of block copolymer, alone or in mixture.
• Table 1 shows the results of inherent viscosity and melt viscosity of the Cpl, Cp2 and Exl compositions, as well as the MVTR, saturation water absorption, and hardness measurements obtained on extruded objects. from these respective compositions.
• composition Exl according to the invention is more easily extrudable than the composition Cp2.
• Table 2 shows tensile strength properties measured according to ISO 527-2: 2012-1A.
• the tensile tests are performed on the two 30 ⁇ thick films produced using CAST technology.
• the longitudinal and transversal directions are studied for the two films with 3 specimens per direction.
• Vinitiale 1 mm / min to 1% deformation of the specimen (for module calculation);
• V final 100 mm / min until the test piece breaks (for the measurement of deformations and constraints at the threshold of the flow and at the rupture).
• the test pieces used are the ISO 527-3 strips and the L0 is fixed at 50 mm.

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Chemical Kinetics & Catalysis (AREA)
• Medicinal Chemistry (AREA)
• Polymers & Plastics (AREA)
• Organic Chemistry (AREA)
• Health & Medical Sciences (AREA)
• Manufacturing & Machinery (AREA)
• Mechanical Engineering (AREA)
• Materials Engineering (AREA)
• Compositions Of Macromolecular Compounds (AREA)
• Manufacture Of Macromolecular Shaped Articles (AREA)
• Extrusion Moulding Of Plastics Or The Like (AREA)
• Other Resins Obtained By Reactions Not Involving Carbon-To-Carbon Unsaturated Bonds (AREA)

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• 2016
  • 2016-11-14 FR FR1661012A patent/FR3058724B1/fr not_active Expired - Fee Related
• 2017
  • 2017-11-14 US US16/349,461 patent/US11124610B2/en active Active
  • 2017-11-14 WO PCT/FR2017/053109 patent/WO2018087501A1/fr not_active Ceased
  • 2017-11-14 EP EP17804634.8A patent/EP3538340B1/fr active Active
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