Classifications

• • 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
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B1/00—Layered products having a non-planar shape
  • B32B1/08—Tubular products
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
  • B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B27/00—Layered products comprising a layer of synthetic resin
  • B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
• • 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
  • C08K5/13—Phenols; Phenolates
• • 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
  • C08K5/15—Heterocyclic compounds having oxygen in the ring
  • C08K5/151—Heterocyclic compounds having oxygen in the ring having one oxygen atom in the ring
  • C08K5/1535—Five-membered rings
• • 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
  • C08K5/16—Nitrogen-containing compounds
  • C08K5/17—Amines; Quaternary ammonium compounds
• • 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
  • C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
  • C08K5/43—Compounds containing sulfur bound to nitrogen
  • C08K5/435—Sulfonamides
• • 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
  • C08K5/49—Phosphorus-containing compounds
  • C08K5/51—Phosphorus bound to oxygen
  • C08K5/52—Phosphorus bound to oxygen only
  • C08K5/524—Esters of phosphorous acids, e.g. of H3PO3
  • C08K5/526—Esters of phosphorous acids, e.g. of H3PO3 with hydroxyaryl compounds
• • 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
• • 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
  • C08L77/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino-carboxylic acids or of polyamines and polycarboxylic acids
• • H—ELECTRICITY
  • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
  • H02K—DYNAMO-ELECTRIC MACHINES
  • H02K1/00—Details of the magnetic circuit
  • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
  • H02K1/22—Rotating parts of the magnetic circuit
  • H02K1/27—Rotor cores with permanent magnets
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2250/00—Layers arrangement
  • B32B2250/03—3 layers
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2250/00—Layers arrangement
  • B32B2250/24—All layers being polymeric
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2272/00—Resin or rubber layer comprising scrap, waste or recycling material
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2307/00—Properties of the layers or laminate
  • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
  • B32B2307/558—Impact strength, toughness
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2307/00—Properties of the layers or laminate
  • B32B2307/70—Other properties
  • B32B2307/704—Crystalline
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2307/00—Properties of the layers or laminate
  • B32B2307/70—Other properties
  • B32B2307/726—Permeability to liquids, absorption
  • B32B2307/7265—Non-permeable
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2597/00—Tubular articles, e.g. hoses, pipes
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B32—LAYERED PRODUCTS
  • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
  • B32B2605/00—Vehicles
  • B32B2605/08—Cars
• • 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
  • C08K5/0008—Organic ingredients according to more than one of the "one dot" groups of C08K5/01 - C08K5/59
  • C08K5/0016—Plasticisers

Definitions

• ELV end-of-life motor vehicle
• European Directive 2000/53 / EC relating to end-of-life vehicles has set a rate of reuse and recovery of 95% by weight per vehicle from 2015.
• the 95% reused and recovered are subject to:
• Energy recovery use of waste (oils, tires, plastics, etc.) as means of energy production, by direct incineration with or without other waste; Material recovery: Reuse or reuse: new use of a part which retains the same use and is not transformed, or Recycling: operation aimed at introducing materials from waste into the production cycle, as a total or partial replacement of a virgin material.
• These pipes can be monolayer and / or multilayer tubular structures and or in particular based on polyamide (s).
• polyamide polyamide
• a polyamide-based layer consisting of at least 50% recycled material, in particular embedded between a polyamide-based layer and a barrier layer made of non-recycled material, allowed the constitution of 'a multilayer tubular structure comprising at least three layers capable of transporting an automotive fluid in particular air, oil, water, urea solution, glycol-based coolant, or a fuel such as gasoline, in particular bio-gasoline or diesel, in particular bio-diesel, or hydrogen, whatever the type of fluid initially transported by the single-layer and / or multi-layer tube recycled component of the embedded layer.
• the single-layer and / or multi-layer tube having initially transported automobile fluids from which the recycled material originates is therefore a used tube which has already transported said fluid for at least several months, in particular several years.
• the single-layer and / or multi-layer tube that initially transported fluids is therefore to the exclusion of a virgin tube.
• composition comprising predominantly at least one polyamide .
• said layer (2) consists of a composition mainly comprising at least one semi-crystalline aliphatic polyamide and at least one impact modifier in a proportion of 3 to 45% by weight relative to the total weight of the composition. .
• Layer (1) consists of a composition comprising predominantly at least one semi-crystalline aliphatic polyamide, said composition consisting of at least 50% of recycled material originating from a single-layer and / or multi-layer tube having been intended for transport. automotive fluids.
• said semi-crystalline aliphatic polyamide is obtained from the polycondensation of a single amino acid and said amino acid is chosen from 11-aminoundecanoic acid and 12-aminododecanoic acid, advantageously 11-aminoundecanoic acid.
• the diamine can be linear or branched.
• it is linear.
• said at least one C6 to C12 diamine Xa is in particular chosen from 1, 6-hexamethylenediamine, 1, 7-heptamethylenediamine, 1, 8-octamethylenediamine, 1, 9-nonamethylenediamine, 1, 10- decamethylèdiamine, 1, 11- undecamethylèdiamine, 1, 12-dodecamethylèdiamine.
• said semi-crystalline aliphatic polyamide is obtained from the polycondensation of a single diamine Xa with a single dicarboxylic acid Yb.
• the expression "predominantly comprising at least one polyamide of aliphatic type” means that said composition of the layer (1) comprises at least 50% by weight of at least one aliphatic polyamide relative to the total weight of said composition.
• the recycled material can come from a single-layer and / or multi-layer tube, said single-layer and / or multi-layer tubes having been intended for the transport of automotive fluid.
• Said tube is therefore a used tube, that is to say that it has been used for at least one year for the transport of said fluid defined above.
• Said single-layer tube consists of a composition comprising a semi-crystalline aliphatic polyamide and optionally impact modifiers and / or additives and / or plasticizers and / or antistatic fillers.
• the single-layer and / or multilayer tube which has been intended for the transport of fluid for an automobile undergoes a washing and / or cleaning step before grinding and is then crushed and it then optionally undergoes, before recompounding, a washing and / or step. cleaning after grinding.
• said composition of the layer (1) comprises at least one compound chosen from plasticizer, an impact modifier and an additive, and said recycled material is chosen from a crushed tube, then recompounded and reformulated.
• said tube is a single-layer tube and / or a multilayer tube.
• the tubular structure (MLT) may be intended to transport gasoline provided that the gasoline of the single-layer and / or multi-layer tube and said multilayer tubular structure (MLT) is the same, for example, alcoholic gasoline.
• the recycled material comes from a single-layer tube consisting of a composition comprising only a PA11.
• said composition of the layer (1) comprises at least 60% by weight, in particular at least 70% by weight, in particular at least 80% by weight, in particular at least 90% by weight, more particularly in less 95% recycled material. In another embodiment, said composition of the layer (1) consists of 100% by weight of recycled material.
• the semi-crystalline aliphatic polyamide denoted C is chosen from PA612, PA1012, PA1010, PA11 and PA12, in particular PA11 and said tube was intended for transporting fuel such as gasoline, especially alcoholic gasoline, bio-gasoline or diesel, especially bio diesel.
• the semi-crystalline aliphatic polyamide denoted C is chosen from PA612, PA1012, PA1010, PA11 and PA12, in particular PA11 and said tube was intended for transporting fuel such as gasoline, especially alcoholic gasoline, bio-gasoline or diesel, especially bio diesel.
• said tube which was intended for transporting automobile fluid is single-layer.
• the semi-crystalline aliphatic polyamide denoted C is chosen from PA612, PA1012, PA1010, PA11 and PA12, in particular PA11.
• said tube which was intended for the transport of fluid for an automobile is single-layer or multilayer, crushed, recompounded and reformulated and the composition of the layer (1) resulting from said recycling and reformulated consists of: at least 58% in weight of at least one semi-crystalline aliphatic polyamide denoted C having an average number of carbon atoms per nitrogen atom denoted Ce ranging from 6 to 18, advantageously from 8 to 12; from 6 to 14% of at least one plasticizer, in particular from 6 to 8%; from 1 to 2% by weight of at least one additive, in particular a stabilizer and a catalyst; the sum of the constituents being equal to 100%.
• the semi-crystalline aliphatic polyamide denoted C is chosen from PA612, PA1012, PA1010, PA11 and PA12, in particular PA11.
• said tube was intended for transporting fuel such as gasoline, in particular alcoholic gasoline, bio-gasoline or diesel, in particular bio-diesel.
• the semi-crystalline aliphatic polyamide denoted C is chosen from PA612, PA1012, PA1010, PA11 and PA12, in particular PA11 and said tube was intended for transporting fuel such as gasoline, especially alcoholic gasoline, bio-gasoline or diesel, especially bio diesel.
• the composition is degassed during the compounding, even more advantageously the degassing is located just after the melting zone, and before the zone for introducing a plasticizer such as BBSA or the like.
• the semi-crystalline aliphatic polyamide denoted C is chosen from PA612, PA1012, PA1010, PA11 and PA12, in particular PA11.
• the semi-crystalline aliphatic polyamide denoted C is chosen from PA612, PA1012, PA1010, PA11 and PA12, in particular PA11 and said tube was intended for transporting fuel such as gasoline, especially alcoholic gasoline, bio-gasoline or diesel, especially bio diesel.
• said tube which was intended for transporting automobile fluid is single-layer.
• said tube which was intended for transporting fluid for an automobile is single-layer or multilayer, crushed, recompounded and reformulated and the composition of the layer (1) resulting from said recycling and reformulated consists of: at least 55% in weight, in particular from 55% to 99% by weight, in particular from 55% to 98% by weight, of at least one semi-crystalline aliphatic polyamide denoted C having an average number of carbon atoms per nitrogen atom denoted This included from 6 to 18, advantageously from 8 to 12; from 0 to 45% by weight of at least one impact modifier, in particular from 1 to 45% by weight of at least one impact modifier, in particular from 2 to 45% by weight of at least one impact modifier, the sum of the constituents being equal to 100%.
• the semi-crystalline aliphatic polyamide denoted C is chosen from PA612, PA1012, PA1010, PA11 and PA12, in particular PA11.
• said tube was intended for transporting fuel such as gasoline, in particular alcoholic gasoline, bio-gasoline or diesel, in particular bio-diesel.
• said tube which was intended for transporting automobile fluid is single-layer.
• the semi-crystalline aliphatic polyamide denoted C is chosen from PA612, PA1012, PA1010, PA11 and PA12, in particular PA11.
• said tube was intended for transporting fuel such as gasoline, in particular alcoholic gasoline, bio-gasoline or diesel, in particular bio-diesel.
• said tube which was intended for transporting automobile fluid is single-layer.
• said tube which was intended for transporting fluid for an automobile is single-layer or multilayer, crushed, recompounded and reformulated and the composition of the layer (1) resulting from said recycling and reformulated consists of: at least 50% of weight of at least one semi-crystalline aliphatic polyamide denoted C having an average number of carbon atoms per nitrogen atom denoted Ce ranging from 6 to 18, advantageously from 8 to 12; from 0 to 43% by weight of at least one impact modifier, in particular from 1 to 43% by weight of at least one impact modifier, in particular from 2 to 38% by weight of at least one impact modifier, of 6 at 14% of at least one plasticizer, in particular from 6 to 8%; from 1 to 2% by weight of at least one additive, in particular a stabilizer and a catalyst; the sum of the constituents being equal to 100%.
• the semi-crystalline aliphatic polyamide denoted C is chosen from PA612, PA1012, PA1010, PA11 and PA12, in particular PA11 and said tube was intended for transporting fuel such as gasoline, especially alcoholic gasoline, bio-gasoline or diesel, especially bio diesel.
• said tube which was intended for transporting automobile fluid is single-layer.
• the semi-crystalline aliphatic polyamide denoted C is chosen from PA612, PA1012, PA1010, PA11 and PA12, in particular PA11.
• said tube was intended for transporting fuel such as gasoline, in particular alcoholic gasoline, bio-gasoline or diesel, in particular bio-diesel.
• the semi-crystalline aliphatic polyamide denoted C is chosen from PA612, PA1012, PA1010, PA11 and PA12, in particular PA11 and said tube was intended for transporting fuel such as gasoline, especially alcoholic gasoline, bio-gasoline or diesel, especially bio diesel.
• said tube which was intended for transporting automobile fluid is single-layer.
• the impact modifier is advantageously constituted by a polymer having a flexural modulus of less than 100 MPa measured according to the ISO 178: 2010 standard, determined at 23 ° C with relative humidity: RH50%, and of Tg less than 0 ° C (measured according to standard 11357-2: 2013 at the inflection point of the DSC thermogram, at a heating rate of 20K / min), in particular a polyolefin.
• the polyolefin of the impact modifier can be functionalized or non-functionalized or be a mixture of at least one functionalized and / or at least one non-functionalized.
• the polyolefin has been designated by (B) and functionalized polyolefins (B1) and unfunctionalized polyolefins (B2) have been described below.
• An unfunctionalized polyolefin (B2) is conventionally a homopolymer or copolymer of alpha olefins or diolefins, such as, for example, ethylene, propylene, butene-1, octene-1, butadiene.
• alpha olefins or diolefins such as, for example, ethylene, propylene, butene-1, octene-1, butadiene.
• LDPE low density polyethylene
• HDPE high density polyethylene
• LLDPE linear low density polyethylene, or linear low density polyethylene
• VLDPE very low density polyethylene, or very low density polyethylene
• metallocene polyethylene metallocene polyethylene
• the functionalized polyolefin (B1) can be a polymer of alpha olefins having reactive units (the functionalities); such reactive units are acid, anhydride or epoxy functions.
• the functionalities are acid, anhydride or epoxy functions.
• a functionalized polyolefin is for example a PE / EPR mixture, the weight ratio of which can vary widely, for example between 40/60 and 90/10, said mixture being co-grafted with an anhydride, in particular maleic anhydride, according to a degree of grafting, for example from 0.01 to 5% by weight.
• ethylene / alpha-olefin copolymers such as ethylene / propylene, EPR (abbreviation of ethylene-propylene-rubber) and ethylene / propylene / diene (EPDM).
• EPR abbreviation of ethylene-propylene-rubber
• EPDM ethylene / propylene / diene
• SEBS ethylene-butene / styrene
• SBS styrene / butadiene / styrene
• SIS isoprene / styrene
• SEPS styrene / ethylene-propylene / styrene
• alkyl (meth) acrylate copolymers containing up to 40% by weight of alkyl (meth) acrylate;
• the functionalized polyolefin (B1) can also be chosen from ethylene / propylene copolymers predominantly in propylene grafted with maleic anhydride then condensed with mono-amine polyamide (or a polyamide oligomer) (products described in EP-A-0342066) .
• the functionalized polyolefin (B1) can also be a co- or ter polymer of at least the following units: (1) ethylene, (2) alkyl (meth) acrylate or vinyl ester of saturated carboxylic acid and (3) anhydride such as maleic anhydride or (meth) acrylic acid or epoxy such as glycidyl (meth) acrylate.
• (meth) acrylic acid can be salified with Zn or Li.
• alkyl (meth) acrylate in (B1) or (B2) denotes methacrylates and acrylates of C1 to C8 alkyl, and may be chosen from methyl acrylate, ethyl acrylate , n-butyl acrylate, isobutyl acrylate, ethyl-2-hexyl acrylate, cyclohexyl acrylate, methyl methacrylate and ethyl methacrylate.
• the aforementioned polyolefins (B1) can also be crosslinked by any suitable process or agent (diepoxy, diacid, peroxide, etc.); the term functionalized polyolefin also includes mixtures of the above polyolefins with a difunctional reagent such as diacid, dianhydride, diepoxy, etc. capable of reacting with these or mixtures of at least two functionalized polyolefins capable of reacting with each other.
• a difunctional reagent such as diacid, dianhydride, diepoxy, etc.
• copolymers mentioned above, (B1) and (B2) can be copolymerized in a random or block fashion and have a linear or branched structure.
• the molecular weight, the MFI number, the density of these polyolefins can also vary to a large extent, which will be appreciated by those skilled in the art.
• MFI short for Melt Flow Index, is the melt flow index. It is measured according to standard ASTM 1238.
• the unfunctionalized polyolefins (B2) are chosen from homopolymers or copolymers of polypropylene and any homopolymer of ethylene or copolymer of ethylene and of a comonomer of higher alpha olefinic type. such as butene, hexene, octene or 4-methyl 1-Pentene.
• PPs high density PE, medium density PE, linear low density PE, low density PE, very low density PE.
• polyethylenes are known to those skilled in the art as being produced according to a “radical” process, according to a “Ziegler” type catalysis or, more recently, according to a so-called “metallocene” catalysis.
• the functionalized polyolefins (B1) are chosen from any polymer comprising alpha olefinic units and units bearing polar reactive functions such as epoxy, carboxylic acid or carboxylic acid anhydride functions.
• polymers mention may be made of the ter polymers of ethylene, of alkyl acrylate and of maleic anhydride or of glycidyl methacrylate, such as Lotader® from the Applicant or polyolefins grafted with l.
• maleic anhydride such as Orevac® from the Applicant as well as ter polymers of ethylene, of alkyl acrylate and of (meth) acrylic acid.
• Mention may also be made of homopolymers or copolymers of polypropylene grafted with a carboxylic acid anhydride and then condensed with polyamides or mono-amino polyamide oligomers.
• the additives optionally used in the compositions of the invention are the conventional additives used in polyamides well known to those skilled in the art and are described in particular in EP 2098580.
• catalysts are selected from a catalyst, an antioxidant, a heat stabilizer, a UV absorber, a light stabilizer, a lubricant, an inorganic filler, a flame retardant, a nucleating agent and a dye, fibers. reinforcement, a wax and their mixtures.
• catalyst denotes a polycondensation catalyst such as an inorganic or organic acid.
• the catalyst is chosen from phosphoric acid (H3PO4), phosphorous acid (H3PO3), hypophosphorous acid (H3PO2), or a mixture of these.
• the stabilizer can be a UV stabilizer, an organic stabilizer or more generally a combination of organic stabilizers, such as an antioxidant of the phenol type (for example of the type of that of irganox® 245 or 1098 or 1010 of the company Ciba-BASF), an antioxidant of the phosphite type (for example irgafos® 126 and irgafos® 168 from the company Ciba-BASF) and even possibly other stabilizers such as a HALS, which means Hindered Amine Light Stabilizer or light stabilizer of the hindered amine type (for example Tinuvin® 770 from the company Ciba-BASF), an anti-UV (for example Tinuvin® 312 from the company Ciba) or a phosphorus-based stabilizer. It is also possible to use antioxidants of amine type such as Naugard® 445 from the company Crompton or else polyfunctional stabilizers such as Nylostab® S-EED from the company
• the plasticizers are, by way of example, the plasticizers are chosen from benzene sulfonamide derivatives, such as n-butyl benzene sulfonamide (BBSA); ethyl toluene sulfonamide or N-cyclohexyl toluene sulfonamide; esters of hydroxybenzoic acids, such as 2-ethylhexyl parahydroxybenzoate and 2-decyl-hexyl parahydroxybenzoate; esters or ethers of tetrahydrofurfuryl alcohol, such as oligoethyleneoxytetrahydrofurfurylalcohol; and esters of citric acid or hydroxy-malonic acid, such as oligoethyleneoxy malonate.
• BBSA n-butyl benzene sulfonamide
• esters of hydroxybenzoic acids such as 2-ethylhexyl parahydroxybenzoate and 2-decyl-he
• the additives when they are present in the composition are advantageously present from 1 to 20% by weight, in particular from 5 to 15% by weight, in particular from 5 to 12% by weight.
• antistatic charges are advantageously present from 1 to 20% by weight, in particular from 5 to 15% by weight, in particular from 5 to 12% by weight.
• polysemi-crystalline polyamide and “aliphatic” have the same definition as for layer (1).
• said layer (2) comprises from 3 to 45% by weight of at least one impact modifier, in particular from 5 to 20% by weight of at least one impact modifier.
• the composition of said layer (2) comprises a PA11, a PA12 or a PA612 and from 3 to 45% by weight of an impact modifier, in particular from 5 to 20% by weight of an impact modifier.
• the barrier layer slows down the passage of said fluid, and in particular fuel, both for its polar components (such as ethanol) and for its non-polar components (hydrocarbons) in the other layers of the structure or even outside. of the structure. It is therefore made up based on barrier materials which can be polyphthalamides (PPA) and / or also non-polyamide barrier materials such as very crystalline polymers such as the copolymer of ethylene and vinyl alcohol (noted EVOH below.
• PPA polyphthalamides
• EVOH very crystalline polymers
• the EVOHs are particularly advantageous, in particular the richest in vinyl alcohol comonomer as well as those modified impact because they make it possible to produce less fragile structures, as well as polyphthalamides, in particular coPA6T, PA9T and its copolymers, PA10T and its copolymers or PPAs based on meta-xylylenediamine (MXD) such as MXD6 or MXD10 which can also be impact modified.
• MXD meta-xylylenediamine
• composition can therefore also comprise impact modifiers which are as defined above.
• said barrier layer is the layer in contact with the transported fluid.
• the composition of said layer (2) comprises a PA11, a PA12 or a PA612 and the recycled material comes from a single-layer tube consisting of a composition comprising only a PA11, in particular the composition of the layer (1) is made from 100% recycled material.
• the composition of said layer (2) comprises a PA11, a PA12 or a PA612
• the recycled material comes from a single-layer tube consisting of a composition comprising only a PA11, in particular the composition of the layer (1) is consisting of 100% recycled material and the composition of said layer (2 ') comprises a PA11, a PA12 or a PA612.
• the composition of said layer (2) comprises a PA11, a PA12 or a PA612 and from 3 to 45% by weight of at least one impact modifier, in particular from 5 to 20% by weight of at least one modifier.
• impact and the recycled material comes from a single-layer tube consisting of a composition comprising only a PA11, in particular the composition of the layer (1) consists of 100% recycled material.
• the composition of said layer (2) comprises a PA11, a PA12 or a PA612 and from 3 to 45% by weight of at least one impact modifier, in particular from 5 to 20% by weight of at least one impact modifier and the recycled material comes from a single-layer tube consisting of a composition comprising only one PA11, in particular the composition of the layer (1) consists of 100% recycled material and the composition of said barrier layer comprises a compound chosen from EVOH, impact modified or not, in particular impact modified, and a PPA chosen from PA9T, MXD6, impact modified or not, and MXD10.
• MLT multilayer tubular structure
• at least a second layer (2) is present, said layer (2) being the innermost layer in contact with the fluid.
• the MLT is therefore made up of four layers (2) // (1) // barrier // (2) with from the outside to the inside: an outer layer (2), a layer (1), a barrier layer and an inner layer (2) in contact with the automotive fluid.
• the second internal layer (2) meets the same definition as above but may be identical to or different from the external layer (2).
• said layer (1) represents at least 10%, in particular at least 30%, in particular at least 50% of the total thickness of said multilayer tubular structure (MLT).
• said layer (1) represents at least 60%, in particular at least 70% of the total thickness of said multilayer tubular structure (MLT).
• said composition of said layer (1) is devoid of polyamides denoted A and B and said composition of said layer (2) comprises selected polyamides among those denoted E, F and a mixture of these.
• said composition of said layer (1) comprises polyamides selected from those noted A, B and a mixture thereof
• said composition of said layer (2) comprises polyamides selected from those noted E, F and a mixture thereof.
• said composition of said layer (1) is devoid of polyamides denoted A and B and said composition of said layer (2) is devoid of of polyamides denoted E and F.
• the layer (1) comes from a single-layer recycled tube.
• the layer (1) comes from a single-layer recycled tube and only said composition of said layer (1) comprises at least one impact modifier.
• the layer (1) comes from a single-layer recycled tube and said composition of said layer (1) as well as said compositions of the layer or layers (2) comprise at least one impact modifier. .
• the layer (1) comes from a recycled multilayer tube.
• the layer (1) comes from a multilayer recycled tube and said composition of said layer (1) as well as said compositions of the layer or layers (2) comprise at least one impact modifier. .
• said multilayer tubular is intended for the transport of fluids chosen from a fuel such as gasoline, in particular alcoholic gasoline, bio-gasoline or diesel, in particular gasoline. bio-diesel.
• a fuel such as gasoline, in particular alcoholic gasoline, bio-gasoline or diesel, in particular gasoline. bio-diesel.
• the binder is described in particular in patents EP1452307 and EP1162061, EP1216826, EP0428833 and EP3299165.
• PA612 Polyamide 612 of Mn (number molecular mass) 29000. The melting point is 218 ° C, its enthalpy of fusion is 67kJ / m2
• PA610 Polyamide 610 of Mn (number molecular mass) 30000. The melting point is 223 ° C, its enthalpy of fusion is 61kJ / m2
• PA6 Polyamide 6 of Mn (number molecular mass) 28000. The melting point is 220 ° C, its enthalpy of fusion is 68kJ / m2
• the melting temperature and the enthalpy of fusion were determined according to ISO 11357-3: 2013.
• stabilizer stabilizer consisting of 80% of Lowinox 44B25 phenol from Great Lakes, 20% of Irgafos 168 phosphite from Ciba BBSA: BBSA plasticizer (benzyl butyl sulfonamide),
• Imod generically designates a polyolefin or other impact modifier such as, among others, PEBA (polyether-block-amide), core-shells, silicones, etc.
• PEBA polyether-block-amide
• core-shells core-shells
• silicones etc.
• compositions called "recy”, “recy2” and “recy3" used for layer (1) of the tubes of the invention or counterexample tubes protocols for simulating an aged tube were used:
• Protocol A The tube is (artificially) aged according to an easily reproducible model protocol which consists of placing it in air (in the presence of oxygen) at 150 ° C for 96 hours (4 days), in order to thermo-oxidize it .
• This aging model is representative of the average thermo-oxidation that the tubes undergo in 10 years of service in a vehicle next to a hot engine.
• This tube aged according to this protocol (PA11-recy) was crushed and the granules obtained were used for the manufacture of the recycled layer (1) of Example 9 and compared to a tube (Example 10) whose layer (1) ) recycled comes from granules of a tube of PA11 PL (PA11-recy-car) which comes from a gasoline line of a Toyota brand car, having 10 years of age, and which has been reground.
• protocol A is representative of a regrind gasoline tube. Specific protocols used during the (re) compounding of the aged tube.
• the crushed tube After aging, the crushed tube can in certain cases be recompounded according to two protocols:
• Protocol B2 the regrind tube is recompounded on a Coperion / Werner 40mm twin-screw extruder, 70kgh, 300rpm, 270 ° C setpoint, with a strong degassing of -660mmHg.
• compositions used for the preparation of the tubes of the invention are as follows:
• PA11 PL PA11 + 7% BBSA + 1% stabilizer
• PA12PL PA12 + 12% BBSA + 1% stabilizer
• PA11 PL-recy2 tube of PA11 PL aged according to protocol A, regrind, recompounded according to protocol B2, with during this recompounding addition of 7% BBSA + 0.5% stabilizer, to be then recycled
• PA11 PL-recy + 50% PA12PL-recy a 50/50 mixture of granules of PA11 PL-recy and PA12PL-recy.
• PA12PL-recy PA12PL tube aged according to protocol A, regrind, to be then recycled.
• PA12imod1 PA12 + 6% imodl + 8% BBSA + 1% stabilizer
• PA1012PL4 PA1012 + 12% BBSA + 1% stabilizer
• PA11-recyNX3 tube of PA11 PL aged according to protocol A, regrind, recompounded according to protocol B2, with during this recompounding addition of imod2 10% + PA610 5% + PA6 5% + BBSA 4% + stabilizer 1%, to be subsequently recycled
• PA12HIPHL PA12 + 6% imodl + 10% BBSA + 1% stabilizer
• EVOH32 32% ethylene EVOH, marketed by the company Eval under the name Eval FP101 B
• MXD6hi shock modified MXD6 composition (sold under the name Ixef BXT-2000 by Solvay. Its melting point is 237 ° C.
• compositions are manufactured by conventional compounding in a Coperion 40 type co-rotating twin-screw extruder, at 300rpm, at 270 ° C (or at 300 ° C when the ingredients have a melting point above 260 ° C).
• Multilayer pipes are produced by coextrusion.
• a Maillefer industrial multilayer extrusion line is used, equipped with 5 extruders, connected to a multilayer extrusion head with spiral mandrels.
• the extrusion line comprises: a die-punch assembly, located at the end of the coextrusion head; the internal diameter of the die and the external diameter of the punch are chosen according to the structure to be produced and the materials of which it is made, as well as the dimensions of the tube and the line speed; a vacuum tank with an adjustable vacuum level. In this tank circulates water generally maintained at 20 ° C, in which is immersed a gauge allowing the tube to conform to its final dimensions.
• the 5 extruder configuration is used to make tubes ranging from 2 layers to 5 layers (and also single layer tubes). In the case of structures with a number of layers less than 5, several extruders are then supplied with the same material.
• the extruded materials Before testing, in order to ensure the best tube properties and good extrusion quality, it is checked that the extruded materials have a residual moisture level before extrusion of less than 0.08%. Otherwise, an additional step of drying the material is carried out before the tests, generally in a vacuum dryer, for 1 night at 80 ° C.
• the tubes which meet the characteristics described in the present patent application, were taken, after stabilization of the extrusion parameters, the dimensions of the tubes concerned no longer changing over time.
• the diameter is controlled by a laser diameter measurer installed at the end of the line.
• the line speed is typically 20m / min. It generally varies between 5 and 100m / min.
• the screw speed of extruders depends on the thickness of the layer and the diameter of the screw as is known to those skilled in the art.
• the temperatures of the extruders and the tools must be adjusted so as to be sufficiently higher than the melting point of the compositions considered, so that they remain in the molten state, thus avoiding they solidify and block the machine.
• Flex. designates the flexural modulus measured according to IS0178 at 23 ° C on a tube conditioned at equilibrium in a climate of 50% humidity and at 23 ° C
• Shock refers to the VW-40 ° C type shock, VW standard TL524352010
• shock performance that can be qualified as "very bad”, which corresponds to> 75%
• Old. it is about durability, in other words it indicates the resistance of the tube to oxidative aging in hot air.
• the tube is aged in air at 150 ° C, then it is shocked with a shock according to standard DIN 73378, this shock being carried out at -40 ° C, the corresponding half-life (in hours) is indicated. at the end of which 50% of the tubes tested break. A qualitative comment accompanies this value.
• thermo-oxidative aging resistance to thermo-oxidative aging
• a strip of tube 9mm wide is taken by cutting. This strip is therefore in the shape of a tile and still has all the layers of the original tube.
• the strip, and therefore the interface is for its part maintained at 90 degrees with respect to the direction of traction.
• All.% This is the elongation at break achieved according to the ISO R527 standard except that it is measured on a tube with a diameter of 8 mm and a thickness of 1 mm.

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• 2020
  • 2020-05-19 FR FR2005006A patent/FR3110583B1/fr active Active
• 2021
  • 2021-05-18 WO PCT/FR2021/050856 patent/WO2021234263A1/fr not_active Ceased
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