PT2311922T - Elemento de vedação para material de canalização com excelente resistência ao cloro, método para produzir o elemento de vedação para material de canalização com excelente resistência ao cloro, elemento de vedação para material de canalização com excelente resistência a óleo e material de canalização - Google Patents

Elemento de vedação para material de canalização com excelente resistência ao cloro, método para produzir o elemento de vedação para material de canalização com excelente resistência ao cloro, elemento de vedação para material de canalização com excelente resistência a óleo e material de canalização

Info

Publication number
PT2311922T
PT2311922T PT97945281T PT09794528T PT2311922T PT 2311922 T PT2311922 T PT 2311922T PT 97945281 T PT97945281 T PT 97945281T PT 09794528 T PT09794528 T PT 09794528T PT 2311922 T PT2311922 T PT 2311922T
Authority
PT
Portugal
Prior art keywords
piping material
sealing member
resistance
chlorine resistance
excellent chlorine
Prior art date
Application number
PT97945281T
Other languages
English (en)
Inventor
Noguchi Toru
Ueki Hiroyuki
Asano Yuichi
Original Assignee
Kitz Corp
Nissin Kogyo Kk
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP2008181872A external-priority patent/JP5072750B2/ja
Priority claimed from JP2008181871A external-priority patent/JP5001232B2/ja
Application filed by Kitz Corp, Nissin Kogyo Kk filed Critical Kitz Corp
Publication of PT2311922T publication Critical patent/PT2311922T/pt

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K3/00Materials not provided for elsewhere
    • C09K3/10Materials in mouldable or extrudable form for sealing or packing joints or covers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00Use of pretreated ingredients
    • C08K9/02Ingredients treated with inorganic substances
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00Nanotechnology for materials or surface science, e.g. nanocomposites
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B82NANOTECHNOLOGY
    • B82YSPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y40/00Manufacture or treatment of nanostructures
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00Carbon; Compounds thereof
    • C01B32/15Nano-sized carbon materials
    • C01B32/158Carbon nanotubes
    • C01B32/168After-treatment
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/005Reinforced macromolecular compounds with nanosized materials, e.g. nanoparticles, nanofibres, nanotubes, nanowires, nanorods or nanolayered materials
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00Use of inorganic substances as compounding ingredients
    • C08K3/02Elements
    • C08K3/04Carbon
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K7/00Use of ingredients characterised by shape
    • C08K7/02Fibres or whiskers
    • C08K7/04Fibres or whiskers inorganic
    • C08K7/06Elements
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16KVALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/16Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members
    • F16K1/18Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps
    • F16K1/22Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with pivoted closure-members with pivoted discs or flaps with axis of rotation crossing the valve member, e.g. butterfly valves
    • F16K1/226Shaping or arrangements of the sealing
    • F16K1/2263Shaping or arrangements of the sealing the sealing being arranged on the valve seat
    • F16K1/2265Shaping or arrangements of the sealing the sealing being arranged on the valve seat with a channel- or U-shaped seal covering a central body portion
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2202/00Structure or properties of carbon nanotubes
    • C01B2202/20Nanotubes characterized by their properties
    • C01B2202/32Specific surface area
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2202/00Structure or properties of carbon nanotubes
    • C01B2202/20Nanotubes characterized by their properties
    • C01B2202/34Length
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01BNON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B2202/00Structure or properties of carbon nanotubes
    • C01B2202/20Nanotubes characterized by their properties
    • C01B2202/36Diameter
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00Crystal-structural characteristics
    • C01P2002/80Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
    • C01P2002/82Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by IR- or Raman-data
    • CCHEMISTRY; METALLURGY
    • C01INORGANIC CHEMISTRY
    • C01PINDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00Physical properties of inorganic compounds
    • C01P2006/80Compositional purity
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02Characterised 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
    • C08J2323/16Ethene-propene or ethene-propene-diene copolymers
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/002Physical properties
    • C08K2201/003Additives being defined by their diameter
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08KUse of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00Specific properties of additives
    • C08K2201/011Nanostructured additives
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08LCOMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00Applications
    • C08L2203/18Applications used for pipes
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2200/00Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K2200/02Inorganic compounds
    • C09K2200/0204Elements
    • C09K2200/0208Carbon
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2200/00Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K2200/02Inorganic compounds
    • C09K2200/0278Fibres
    • C09K2200/0282Carbon fibres
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2200/00Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K2200/06Macromolecular organic compounds, e.g. prepolymers
    • C09K2200/0615Macromolecular organic compounds, e.g. prepolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C09K2200/0617Polyalkenes
    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2200/00Chemical nature of materials in mouldable or extrudable form for sealing or packing joints or covers
    • C09K2200/06Macromolecular organic compounds, e.g. prepolymers
    • C09K2200/0615Macromolecular organic compounds, e.g. prepolymers obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C09K2200/0617Polyalkenes
    • C09K2200/062Polyethylene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nanotechnology (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Manufacturing & Machinery (AREA)
  • General Engineering & Computer Science (AREA)
  • Composite Materials (AREA)
  • Inorganic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Material Composition (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
PT97945281T 2008-07-11 2009-07-10 Elemento de vedação para material de canalização com excelente resistência ao cloro, método para produzir o elemento de vedação para material de canalização com excelente resistência ao cloro, elemento de vedação para material de canalização com excelente resistência a óleo e material de canalização PT2311922T (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008181872A JP5072750B2 (ja) 2008-07-11 2008-07-11 耐油性に優れた配管機材用シール部材を有する配管機材及びバタフライ弁
JP2008181871A JP5001232B2 (ja) 2008-07-11 2008-07-11 耐塩素性に優れた配管機材用シール部材及びその製造方法並びに配管機材

Publications (1)

Publication Number Publication Date
PT2311922T true PT2311922T (pt) 2019-12-09

Family

ID=41507194

Family Applications (1)

Application Number Title Priority Date Filing Date
PT97945281T PT2311922T (pt) 2008-07-11 2009-07-10 Elemento de vedação para material de canalização com excelente resistência ao cloro, método para produzir o elemento de vedação para material de canalização com excelente resistência ao cloro, elemento de vedação para material de canalização com excelente resistência a óleo e material de canalização

Country Status (6)

Country Link
US (1) US20110166255A1 (pt)
EP (1) EP2311922B1 (pt)
CN (2) CN103589075B (pt)
ES (1) ES2759475T3 (pt)
PT (1) PT2311922T (pt)
WO (1) WO2010005084A1 (pt)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5179979B2 (ja) * 2008-04-16 2013-04-10 日信工業株式会社 カーボンナノファイバー及びその製造方法、カーボンナノファイバーを用いた炭素繊維複合材料の製造方法及び炭素繊維複合材料
US10267424B2 (en) 2016-02-12 2019-04-23 Mueller International, Llc Butterfly valve seat with seat cover
CN108003408B (zh) * 2016-11-01 2020-10-23 中国石油化工股份有限公司 一种硫化橡胶及其制备方法和应用
US20180149278A1 (en) * 2016-11-29 2018-05-31 Mueller International, Llc Torque reducing valve seat
JP6857100B2 (ja) * 2017-07-31 2021-04-14 Nok株式会社 密封装置
CN107269854B (zh) * 2017-08-18 2020-05-29 中机十院国际工程有限公司 一种建筑管道用截止阀
US11686394B2 (en) 2021-01-28 2023-06-27 Mueller International, Llc Bonded seat valve
GB2610406A (en) 2021-09-02 2023-03-08 Black & Decker Inc Seal

Family Cites Families (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2144140B (en) * 1983-07-26 1987-07-22 Cummins Engine Co Inc High swell gasket material
JPS6250495A (ja) * 1985-08-28 1987-03-05 Toa Nenryo Kogyo Kk 炭素繊維の表面電解処理装置
JPS63280788A (ja) * 1987-05-13 1988-11-17 Asahi Chem Ind Co Ltd ガスケツト用組成物
JP2872830B2 (ja) 1991-08-08 1999-03-24 株式会社キッツ バタフライ弁のラバーシート
JP2932420B2 (ja) 1994-06-22 1999-08-09 株式会社キッツ バタフライバルブ
JP2004059409A (ja) * 2002-07-31 2004-02-26 Junji Nakamura カーボンナノ材料、その製法及び水素貯蔵材料
JP2004210821A (ja) * 2002-12-26 2004-07-29 Inoac Corp 耐塩素水性ゴム組成物
JP4005048B2 (ja) * 2003-04-09 2007-11-07 日信工業株式会社 炭素繊維複合材料およびその製造方法
JP4005058B2 (ja) * 2003-07-23 2007-11-07 日信工業株式会社 炭素繊維複合材料及びその製造方法、炭素繊維複合成形品及びその製造方法
JP4005005B2 (ja) * 2003-08-28 2007-11-07 日信工業株式会社 炭素繊維複合材料及びその製造方法、並びに炭素繊維複合成形品及びその製造方法
JP4149413B2 (ja) * 2004-05-21 2008-09-10 日信工業株式会社 炭素繊維複合材料及びその製造方法
JP4245514B2 (ja) * 2004-05-24 2009-03-25 日信工業株式会社 炭素繊維複合材料及びその製造方法、炭素繊維複合金属材料の製造方法、炭素繊維複合非金属材料の製造方法
JP2006167710A (ja) * 2004-11-22 2006-06-29 Nissin Kogyo Co Ltd 薄膜の製造方法及び薄膜が形成された基材、電子放出材料及びその製造方法並びに電子放出装置
JP4493506B2 (ja) * 2005-01-06 2010-06-30 日信工業株式会社 リップ状シール部材及び該リップ状シール部材を用いた車両用液圧マスタシリンダ
JP2007039638A (ja) * 2005-03-23 2007-02-15 Nissin Kogyo Co Ltd 炭素繊維複合材料
JP4224499B2 (ja) * 2005-06-30 2009-02-12 日信工業株式会社 繊維複合材料の製造方法
JP2007039649A (ja) * 2005-06-30 2007-02-15 Nissin Kogyo Co Ltd 複合材料
JP4606276B2 (ja) * 2005-08-31 2011-01-05 日信工業株式会社 ピストンシール部材及び該ピストンシール部材を用いたディスクブレーキ
JP4493567B2 (ja) * 2005-08-31 2010-06-30 日信工業株式会社 リップ状シール部材及び該リップ状シール部材を用いた車両用液圧マスタシリンダ
JP4810382B2 (ja) * 2005-11-11 2011-11-09 日信工業株式会社 熱可塑性樹脂組成物及びその製造方法
JP4231916B2 (ja) * 2006-04-28 2009-03-04 日信工業株式会社 炭素繊維複合樹脂材料の製造方法
JP4427034B2 (ja) * 2006-04-28 2010-03-03 日信工業株式会社 炭素繊維複合材料
JP4898331B2 (ja) * 2006-07-20 2012-03-14 日信工業株式会社 炭素繊維複合材料
US20090000880A1 (en) * 2006-11-30 2009-01-01 Nissin Kogyo Co., Ltd. Disc brake shim plate
US7960467B2 (en) * 2006-11-30 2011-06-14 Nissin Kogyo Co., Ltd. Carbon fiber composite material and method of producing the same
BRPI0822584A2 (pt) * 2008-04-07 2015-06-23 Prad Res & Dev Ltd Material de vedação termo-resistente, elemnto contínuo de vedação, e equipamento de uso no interior de poço
JP5179979B2 (ja) * 2008-04-16 2013-04-10 日信工業株式会社 カーボンナノファイバー及びその製造方法、カーボンナノファイバーを用いた炭素繊維複合材料の製造方法及び炭素繊維複合材料
WO2010004634A1 (ja) * 2008-07-10 2010-01-14 日信工業株式会社 カーボンナノファイバー及びその製造方法並びに炭素繊維複合材料
WO2010004633A1 (ja) * 2008-07-10 2010-01-14 日信工業株式会社 カーボンナノファイバーの製造方法及びカーボンナノファイバー並びにカーボンナノファイバーを用いた炭素繊維複合材料の製造方法及び炭素繊維複合材料

Also Published As

Publication number Publication date
CN103589075A (zh) 2014-02-19
US20110166255A1 (en) 2011-07-07
EP2311922B1 (en) 2019-09-04
WO2010005084A1 (ja) 2010-01-14
EP2311922A1 (en) 2011-04-20
EP2311922A4 (en) 2015-12-16
CN102089399A (zh) 2011-06-08
CN102089399B (zh) 2014-04-09
ES2759475T3 (es) 2020-05-11
CN103589075B (zh) 2015-08-19

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