WO2024112586A1 - Matériau élastomère et thermoplastique composite stable aux rayons gamma pour tuyau de pompe et articles présentant d'autres géométries polymères - Google Patents

Matériau élastomère et thermoplastique composite stable aux rayons gamma pour tuyau de pompe et articles présentant d'autres géométries polymères Download PDF

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Publication number
WO2024112586A1
WO2024112586A1 PCT/US2023/080277 US2023080277W WO2024112586A1 WO 2024112586 A1 WO2024112586 A1 WO 2024112586A1 US 2023080277 W US2023080277 W US 2023080277W WO 2024112586 A1 WO2024112586 A1 WO 2024112586A1
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Prior art keywords
article
range
thermoplastic material
substrate
membrane
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PCT/US2023/080277
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English (en)
Inventor
Louis BONGIORNO
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Synth-Bio, Llc
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Publication of WO2024112586A1 publication Critical patent/WO2024112586A1/fr

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0054—Special features particularities of the flexible members
    • 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
    • C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
    • C08J7/04—Coating
    • C08J7/0427—Coating with only one layer of a composition containing a polymer binder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
    • C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
    • C08L75/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • C08L83/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D123/00—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers
    • C09D123/02—Coating compositions based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D123/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D127/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers
    • C09D127/02—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment
    • C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B43/00—Machines, pumps, or pumping installations having flexible working members
    • F04B43/0009—Special features
    • F04B43/0054—Special features particularities of the flexible members
    • F04B43/0072—Special features particularities of the flexible members of tubular flexible members
    • 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
    • C08G2110/00—Foam properties
    • C08G2110/0008—Foam properties flexible
    • 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
    • C08G2650/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
    • C08G2650/28—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterised by the polymer type
    • C08G2650/38—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterised by the polymer type containing oxygen in addition to the ether group
    • C08G2650/40—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterised by the polymer type containing oxygen in addition to the ether group containing ketone groups, e.g. polyarylethylketones, PEEK or PEK
    • 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
    • C08G77/00—Macromolecular compounds obtained by reactions forming a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon in the main chain of the macromolecule
    • C08G77/04—Polysiloxanes
    • C08G77/22—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen
    • C08G77/26—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen and oxygen nitrogen-containing 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/10—Homopolymers or copolymers of propene
    • C08J2323/12—Polypropene
    • 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
    • C08J2371/08—Polyethers derived from hydroxy compounds or from their metallic derivatives
    • C08J2371/10—Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
    • C08J2371/12—Polyphenylene 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
    • C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
    • C08J2375/04—Polyurethanes
    • 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
    • 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
    • C08J2400/00—Characterised by the use of unspecified polymers
    • C08J2400/26—Elastomers
    • 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
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/16—Ethene-propene or ethene-propene-diene copolymers
    • 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
    • C08J2427/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
    • C08J2427/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
    • C08J2427/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
    • 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
    • C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
    • C08J2483/04—Polysiloxanes
    • 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
    • C08J2483/00—Characterised by the use of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen, or carbon only; Derivatives of such polymers
    • C08J2483/04—Polysiloxanes
    • C08J2483/08—Polysiloxanes containing silicon bound to organic groups containing atoms other than carbon, hydrogen, and oxygen

Definitions

  • peristaltic pump hollow tubes Pump diaphragms, bellows, baby bottle nipples, wire and cable sheaths, gaskets, and o-rings are commonly made from silicone elastomers.
  • peristaltic pumps are used to transport liquids and pastes through an elastomeric hollow tube in which the hollow tube is squeezed between a set of rotating rollers and a fixed pump housing.
  • Silicone elastomers are frequently used for peristaltic pump tubing. Upon repeated flexure, however, the silicone rubber tubing may develop cracks in the side wall and may rupture catastrophically.
  • silicone elastomers have proven difficult to sterilize for reuse.
  • silicone elastomeric articles such as peristaltic pump tubing for multiple patients, manufacturing runs, or the like.
  • Typical sterilization methods such as gamma radiation are known to degrade the silicone elastomer material of the article thereby increasing the likelihood of catastrophic failure during subsequent uses.
  • Described herein is an article comprising a membrane and a substrate.
  • the membrane being comprised of an elastomeric material and having a membrane outer surface.
  • the substrate being comprised of a microporous thermoplastic material comprising a plurality of micropores.
  • the substrate being attached to at least a portion of the membrane outer surface and having a thickness in a range of between 0.5 ⁇ m and 12 ⁇ m.
  • a volume ratio of the elastomeric material to the microporous thermoplastic material is in a range of between 1:1 and 100:1.
  • the elastomeric material may be selected from the group consisting of platinum silicone, fluorinated silicone, ethylene propylene diene monomer rubber (EPDM), and fluorocarbon-based fluoroelastomers.
  • the microporous thermoplastic material may be selected from the group consisting of a polypropylene, polyether ether ketone, polyurethane, polyethylene, and polyamide.
  • the thickness of the substrate may be in a range selected from the group consisting of between 0.5 ⁇ m and 10 ⁇ m, between 0.5 ⁇ m and 7.5 ⁇ m, between 0.5 ⁇ m and 5.0 ⁇ m, between 1.0 ⁇ m and 12 ⁇ m, between 1.0 ⁇ m and 10 ⁇ m, between 1.0 ⁇ m and 7.5 ⁇ m, between 1.0 ⁇ m and 5.0 ⁇ m, between 2.0 ⁇ m and 12 ⁇ m, between 2.0 ⁇ m and 10 ⁇ m, between 2.0 ⁇ m and 7.5 ⁇ m, and between 2.0 ⁇ m and 5.0 ⁇ m.
  • the ratio of elastomeric material to microporous thermoplastic material may be in a range selected from the group consisting of between 1:1 and 75:1, between 1:1 and 50:1, between 1:1 and 25:1, between 5:1 and 100:1, between 5:1 and 75:1, between 5:1 and 50:1, between 5:1 and 25:1, between 10:1 and 100:1, between 10:1 and 75:1, between 10:1 and 50:1, and between 10:1 and 25:1.
  • the microporous thermoplastic material may comprise a plurality of micropores having an average pore size in a range of between 0.1 ⁇ m and 15 ⁇ m.
  • the average pore size of the micropores may also be in a range selected from the group consisting of between 0.1 ⁇ m and 10 ⁇ m, between 0.1 ⁇ m and 7.5 ⁇ m, between 0.1 ⁇ m and 5.0 ⁇ m, between 1.0 ⁇ m and 15 ⁇ m, between 1.0 ⁇ m and 10 ⁇ m, between 1.0 ⁇ m and 7.5 ⁇ m, between 1.0 ⁇ m and 5.0 ⁇ m, between 2.0 ⁇ m and 15 ⁇ m, between 2.0 ⁇ m and 10 ⁇ m, between 2.0 ⁇ m and 7.5 ⁇ m, and between 2.0 ⁇ m and 5.0 ⁇ m.
  • a portion of the elastomeric material may extend into at least a portion of the micropores.
  • the article may be in the form of a hollow tube.
  • the hollow tube may have an inside diameter in a range of between 0.5 mm and 300 mm.
  • the hollow tube may have an inside diameter in a range selected from the group consisting of between 0.5 mm and 250 mm, between 0.5 mm and 200 mm, between 0.5 mm and 150 mm, between 0.5 mm and 100 mm, between 1.0 mm and 300 mm, between 1.0 mm and 250 mm, between 1.0 mm and 200 mm, between 1.0 mm and 150 mm, between 1.0 mm and 100 mm, between 25 mm and 300 mm, between 25 mm and 250 mm, between 25 mm and 200 mm, between 25 mm and 150 mm, between 25 mm and 100 mm, between 50 mm and 300 mm, between 50 mm and 250 mm, between 50 mm and 200 mm, between 50 mm and 150 mm, and between 50 mm and 100 mm, and 50 mm and 300 mm, between 50 mm and
  • the article may be in the form of a gasket. In other embodiments, the article may be in the form of a valve liner. In still other embodiments, the article may be in the form of a valve seat.
  • FIG.1 is a perspective view of an article.
  • FIG.2 is a cross-section of an article.
  • FIG.3 is a perspective view of an article that is a hollow tube.
  • FIG.4 is a top view of an article that is a gasket.
  • FIG.5 is a perspective view of an article that is a valve liner.
  • FIG.6 is a perspective view of an article that is a valve seat.
  • DETAILED DESCRIPTION Disclosed herein is an article. As described herein and in the claims, the following numbers refer to the following structures as noted in the Figures. [0021] 10 refers to an article. [0022] 11 refers to a hollow tube. [0023] 12 refers to a gasket. [0024] 13 refers to a valve liner. [0025] 14 refers to a valve seat. [0026] 100 refers to a membrane. [0027] 110 refers to a membrane outer surface. [0028] 200 refers to a substrate. [0029] FIG. 1 shows a perspective view of an article (10) with FIG.
  • the article comprises a membrane (100) and a substrate (200).
  • the membrane will have a membrane outer surface (110) and may be comprised of an elastomeric material.
  • the substrate is attached to at least a portion of the membrane outer surface and may be comprised of a microporous thermoplastic material.
  • the connection between the membrane (100) and the substrate (200) may be achieved by coating the membrane to the substrate.
  • the substrate will have a thickness in a range selected from the group consisting of between 0.5 ⁇ m and 12 ⁇ m, between 0.5 ⁇ m and 10 ⁇ m, between 0.5 ⁇ m and 7.5 ⁇ m, between 0.5 ⁇ m and 5.0 ⁇ m, between 1.0 ⁇ m and 12 ⁇ m, between 1.0 ⁇ m and 10 ⁇ m, between 1.0 ⁇ m and 7.5 ⁇ m, between 1.0 ⁇ m and 5.0 ⁇ m, between 2.0 ⁇ m and 12 ⁇ m, between 2.0 ⁇ m and 10 ⁇ m, between 2.0 ⁇ m and 7.5 ⁇ m, and between 2.0 ⁇ m and 7.5 ⁇ m.
  • the preferred manufacturing method is coating the membrane (100) to the substrate material (200), a volume ratio between the elastomeric material and the microporous thermoplastic material exists.
  • the ratio of the elastomeric material to the microporous thermoplastic material may be in a range of between 1:1 and 100:1, between 1:1 and 75:1, between 1:1 and 50:1, between 1:1 and 25:1, between 5:1 and 100:1, between 5:1 and 75:1, between 5:1 and 50:1, between 5:1 and 25:1, between 10:1 and 100:1, between 10:1 and 75:1, between 10:1 and 50:1, and between 10:1 and 25:1.
  • Any number of different elastomeric materials may be used in the membrane (100).
  • elastomeric materials include platinum silicone, fluorinated silicone, ethylene propylene diene monomer rubber (EPDM), and fluorocarbon-based fluoroelastomers.
  • EPDM ethylene propylene diene monomer rubber
  • fluorocarbon-based fluoroelastomers Any number of different microporous thermoplastic materials may be used in the substrate (200).
  • Preferred examples of such microporous thermoplastic materials include polypropylene (PP), polyether ether ketone (PEEK), polyurethane, polyethylene (PE), and polyamide.
  • the plurality of micropores of the microporous thermoplastic material will have an average pore size.
  • the average pore size will be in a range selected from the group consisting of between 0.1 ⁇ m and 15 ⁇ m, between 0.1 ⁇ m and 10 ⁇ m, between 0.1 ⁇ m and 7.5 ⁇ m, between 0.1 ⁇ m and 5.0 ⁇ m, between 1.0 ⁇ m and 15 ⁇ m, between 1.0 ⁇ m and 10 ⁇ m, between 1.0 ⁇ m and 7.5 ⁇ m, between 1.0 ⁇ m and 5.0 ⁇ m, between 2.0 ⁇ m and 15 ⁇ m, between 2.0 ⁇ m and 10 ⁇ m, between 2.0 ⁇ m and 7.5 ⁇ m, and between 2.0 ⁇ m and 5.0 ⁇ m.
  • the substrate will be attached to at least a portion of the membrane outer surface in a manner such that a portion of the elastomeric material extends into at least a portion of the micropores.
  • the article (10) may take many forms.
  • FIG. 3 shows the article in the form of a hollow tube (11).
  • the hollow tube may have an inside diameter in a range selected from the group consisting of between 0.5 mm and 300 mm, between 0.5 mm and 250 mm, between 0.5 mm and 200 mm, between 0.5 mm and 150 mm, between 0.5 mm and 100 mm, between 1.0 mm and 300 mm, between 1.0 mm and 250 mm, between 1.0 mm and 200 mm, between 1.0 mm and 150 mm, between 1.0 mm and 100 mm, between 25 mm and 300 mm, between 25 mm and 250 mm, between 25 mm and 200 mm, between 25 mm and 150 mm, between 25 mm and 100 mm, between 50 mm and 300 mm, between 50 mm and 250 mm, between 50 mm and 200 mm, between 50 mm and 150 mm, and between 50 mm and 100 mm.
  • the article may take the form of a gasket (12) as shown in FIG. 4.
  • the article may also take the form of a valve liner (13) as shown in FIG. 5.
  • the article may also take the form of a valve seat (14) as shown in FIG.6. While a hollow tube, a gasket, a valve liner, and a valve seat are shown in the Figures as examples of different geometries that the article may take, a myriad of different geometries may be formed by compiling the materials into or onto one another or by wrapping, overwrapping, laying or overlaying into various geometries.
  • the substrate will be manufactured first using any number of manufacturing techniques known in the art such as injection molding, thermoforming, and the like.
  • the substrate material is preferably heat set to resist stretching in all directions.
  • the surface of the substrate is coated with the membrane material.
  • Exemplary coating processes include knife over roll coating, gravure coating, roll-to-roll coating, and ultrasonic spraying.
  • the membrane material will be applied to at least 90 % of the surface area of the substrate with at least 95 % of the surface area being more preferred, at least 99 % of the surface area being still more preferred, and 100 % of the surface area being most preferred.
  • the membrane material may be adhered to the substrate material by wrapping the membrane material and an uncured mixture of the substrate material around a mandrel until a desired height (also referred to as a wall thickness) is achieved.
  • the semi-finished product may then be placed under compression by wrapping a metal, fabric, or other semi-rigid material around the outer surface thereof before heating the semi-finished product to cure the substrate material. Heating may occur in an oven at a temperature in a range of between 140 °C and 220 °C for a time in a range of between 5 min. and 12 hours.
  • the substrate material may be stacked in layers to achieve a desired height (thickness) and then cut into rings sized near dimensional net size. Multiple rings may then be stacked to a desired height (thickness).
  • the resulting structure may then be placed into a mold where the membrane material is introduced by injection, transfer, or compression methods before heating the semi- finished product to cure the substrate material. Heating may occur in an oven at a temperature in a range of between 140 °C and 220 °C for a time in a range of between 5 min. and 12 hours.
  • the articles disclosed herein comprised of an elastomeric membrane and a microporous thermoplastic substrate have been observed to achieve improved resistance to cracking over time and repeated flexure when compared to known silicone elastomer articles.
  • the articles disclosed herein are gamma-stable. That is to say that the articles disclosed herein can be sterilized using gamma radiation without degrading the elastomeric material.
  • the article has been described as having one or more exemplary designs, the present article may be further modified within the spirit and scope of this disclosure. This application is therefore intended to cover any variations, uses, or adaptations of the tent assembly using its general principles.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Polymers & Plastics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne un article comprenant une membrane et un substrat. La membrane contient un matériau élastomère ayant une surface externe de membrane. Le substrat contient un matériau thermoplastique microporeux et est fixé à au moins une partie de la surface externe de membrane avec une partie du matériau élastomère s'étendant dans au moins une partie des micropores. Le substrat présente une épaisseur dans une plage comprise entre 0,5 µm et 12 µm. Un rapport volumique du matériau élastomère au matériau thermoplastique microporeux se situe dans une plage comprise entre 1 : 1 et 100 : 1. L'article peut se présenter sous la forme d'un tube creux, d'un joint, d'un revêtement de soupape ou d'un siège de soupape.
PCT/US2023/080277 2022-11-22 2023-11-17 Matériau élastomère et thermoplastique composite stable aux rayons gamma pour tuyau de pompe et articles présentant d'autres géométries polymères WO2024112586A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US202263427249P 2022-11-22 2022-11-22
US63/427,249 2022-11-22

Publications (1)

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WO2024112586A1 true WO2024112586A1 (fr) 2024-05-30

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1054766A1 (fr) * 1998-02-13 2000-11-29 Gore Enterprise Holdings, Inc. Compositions d'elastomere composite resistantes aux flexions
WO2014116490A1 (fr) * 2013-01-23 2014-07-31 Zeus Industrial Products, Inc. Composites silicone-ptfe électrofilé
WO2015083766A1 (fr) * 2013-12-05 2015-06-11 富士フイルム株式会社 Procédé de fabrication d'un corps composite
US20170261132A1 (en) * 2014-03-10 2017-09-14 Saint-Gobain Performance Plastics Corporation Multilayer flexible tube and methods for making same
EP2667911B1 (fr) * 2011-01-27 2020-05-06 CareFusion 303, Inc. Tube en caoutchouc silicone à basse perméabilité

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1054766A1 (fr) * 1998-02-13 2000-11-29 Gore Enterprise Holdings, Inc. Compositions d'elastomere composite resistantes aux flexions
EP2667911B1 (fr) * 2011-01-27 2020-05-06 CareFusion 303, Inc. Tube en caoutchouc silicone à basse perméabilité
WO2014116490A1 (fr) * 2013-01-23 2014-07-31 Zeus Industrial Products, Inc. Composites silicone-ptfe électrofilé
WO2015083766A1 (fr) * 2013-12-05 2015-06-11 富士フイルム株式会社 Procédé de fabrication d'un corps composite
US20170261132A1 (en) * 2014-03-10 2017-09-14 Saint-Gobain Performance Plastics Corporation Multilayer flexible tube and methods for making same

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