ES2006088A6 - Un metodo para proporcionar un revestimiento permeable al vapor de agua pero repelente al agua sobre un sustrato que contiene huecos. - Google Patents

Un metodo para proporcionar un revestimiento permeable al vapor de agua pero repelente al agua sobre un sustrato que contiene huecos.

Info

Publication number
ES2006088A6
ES2006088A6 ES8800520A ES8800520A ES2006088A6 ES 2006088 A6 ES2006088 A6 ES 2006088A6 ES 8800520 A ES8800520 A ES 8800520A ES 8800520 A ES8800520 A ES 8800520A ES 2006088 A6 ES2006088 A6 ES 2006088A6
Authority
ES
Spain
Prior art keywords
liquid
polymer
surface treatment
protective surface
relative product
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
ES8800520A
Other languages
English (en)
Inventor
Porter Christopher Scott
John Powell
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Whitford Plastics Ltd
Original Assignee
Whitford Plastics Ltd
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
Application filed by Whitford Plastics Ltd filed Critical Whitford Plastics Ltd
Publication of ES2006088A6 publication Critical patent/ES2006088A6/es
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/28—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/46—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with organic materials
    • C04B41/48—Macromolecular compounds
    • C04B41/4838—Halogenated polymers
    • C04B41/4842—Fluorine-containing polymers
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/244—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons
    • D06M15/256—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing fluorine
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M23/00—Treatment of fibres, threads, yarns, fabrics or fibrous goods made from such materials, characterised by the process
    • D06M23/10—Processes in which the treating agent is dissolved or dispersed in organic solvents; Processes for the recovery of organic solvents thereof
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N3/047—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with fluoropolymers
    • 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
    • C08J2327/00—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
    • C08J2327/02—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
    • C08J2327/12—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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Textile Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Structural Engineering (AREA)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)
  • Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Road Signs Or Road Markings (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Paints Or Removers (AREA)
  • Non-Metallic Protective Coatings For Printed Circuits (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Laminated Bodies (AREA)

Abstract

UN METODO PARA PROPORCIONAR UN REVESTIMIENTO PERMEABLE AL VAPOR DE AGUA PERO REPELENTE AL AGUA SOBRE UN SUSTRATO QUE CONTIENE HUECOS. A UN PRIMER LIQUIDO ORGANICO EN EL CUAL SE HA DISUELTO UN POLIMERO FLUORCARBONADO, V.G. 5 A 10% P/P DE V.G. PVDF, SE A/ADE UN SEGUNDO LIQUIDO ORGANICO COMPATIBLE EN UNA CANTIDAD (V.G. 1-50% P/P) TAL QUE PERMITE QUE EL POLIMERO ESTE EN SOLUCION. LA SOLUCION MEZCLADA SE APLICA A UNA ESTRUCTURA COMO LA DEL CUERO O (ESPECIALMENTE) UN SUSTRATO DE TEJIDO Y SE CALIENTA V.G. A 60-150GC DURANTE 2-15 MINUTOS. EL POLIMERO SE SEPARA CUANDO EL PRIMER LIQUIDO SE EVAPORA Y SE FORMAN POROS EN EL CUANDO SE EVAPORA EL SEGUNDO LIQUIDO DEL DEPOSITO. LA CAPA FIJADA PRODUCIDA REPELE EL AGUA LIQUIDA PERO ADMITE EL PASO DEL VAPOR DE AGUA.
ES8800520A 1987-02-23 1988-02-23 Un metodo para proporcionar un revestimiento permeable al vapor de agua pero repelente al agua sobre un sustrato que contiene huecos. Expired ES2006088A6 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB878704142A GB8704142D0 (en) 1987-02-23 1987-02-23 Protective surface treatment

Publications (1)

Publication Number Publication Date
ES2006088A6 true ES2006088A6 (es) 1989-04-01

Family

ID=10612734

Family Applications (1)

Application Number Title Priority Date Filing Date
ES8800520A Expired ES2006088A6 (es) 1987-02-23 1988-02-23 Un metodo para proporcionar un revestimiento permeable al vapor de agua pero repelente al agua sobre un sustrato que contiene huecos.

Country Status (11)

Country Link
US (1) US5171611A (es)
EP (1) EP0348425B1 (es)
JP (1) JP2798258B2 (es)
AT (1) ATE91512T1 (es)
AU (1) AU617310B2 (es)
DE (1) DE3882366T2 (es)
DK (1) DK589488D0 (es)
ES (1) ES2006088A6 (es)
GB (1) GB8704142D0 (es)
NO (1) NO177795C (es)
WO (1) WO1988006200A1 (es)

Families Citing this family (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1216467B (it) * 1988-02-26 1990-03-08 Separem Spa Membrana semipermeabile per la separazione di fluidi, procedimento per la sua preparazione e uso ditale membrana per microfiltrazione, distillazione, e tessuti speciali.
GB9026687D0 (en) * 1990-12-07 1991-01-23 Vascutek Ltd Process for providing a low-energy surface on a polymer
US5387378A (en) * 1993-04-21 1995-02-07 Tulane University Integral asymmetric fluoropolymer pervaporation membranes and method of making the same
JPH10195744A (ja) * 1996-12-25 1998-07-28 Unitika Ltd スポーツシューズ用アッパー材
US7268179B2 (en) * 1997-02-03 2007-09-11 Cytonix Corporation Hydrophobic coating compositions, articles coated with said compositions, and processes for manufacturing same
US6495624B1 (en) * 1997-02-03 2002-12-17 Cytonix Corporation Hydrophobic coating compositions, articles coated with said compositions, and processes for manufacturing same
US5853894A (en) * 1997-02-03 1998-12-29 Cytonix Corporation Laboratory vessel having hydrophobic coating and process for manufacturing same
US8653213B2 (en) 1997-02-03 2014-02-18 Cytonix, Llc Hydrophobic coating compositions and articles coated with said compositions
AUPR143400A0 (en) 2000-11-13 2000-12-07 Usf Filtration And Separations Group Inc. Modified membranes
AUPR421501A0 (en) 2001-04-04 2001-05-03 U.S. Filter Wastewater Group, Inc. Potting method
AUPR584301A0 (en) 2001-06-20 2001-07-12 U.S. Filter Wastewater Group, Inc. Membrane polymer compositions
AUPR692401A0 (en) 2001-08-09 2001-08-30 U.S. Filter Wastewater Group, Inc. Method of cleaning membrane modules
US7247238B2 (en) 2002-02-12 2007-07-24 Siemens Water Technologies Corp. Poly(ethylene chlorotrifluoroethylene) membranes
AU2003903507A0 (en) 2003-07-08 2003-07-24 U. S. Filter Wastewater Group, Inc. Membrane post-treatment
US8268176B2 (en) 2003-08-29 2012-09-18 Siemens Industry, Inc. Backwash
AU2004289373B2 (en) 2003-11-14 2010-07-29 Evoqua Water Technologies Llc Improved module cleaning method
WO2005092799A1 (en) 2004-03-26 2005-10-06 U.S. Filter Wastewater Group, Inc. Process and apparatus for purifying impure water using microfiltration or ultrafiltration in combination with reverse osmosis
AU2005240524C1 (en) 2004-04-22 2009-12-24 Evoqua Water Technologies Llc Filtration apparatus comprising a membrane bioreactor and a treatment vessel for digesting organic materials
US7819956B2 (en) 2004-07-02 2010-10-26 Siemens Water Technologies Corp. Gas transfer membrane
AU2005259830C1 (en) * 2004-07-02 2011-07-21 Evoqua Water Technologies Llc Gas transfer membrane
WO2006026814A1 (en) 2004-09-07 2006-03-16 Siemens Water Technologies Corp. Reduction of backwash liquid waste
JP4896025B2 (ja) 2004-09-14 2012-03-14 シーメンス・ウォーター・テクノロジーズ・コーポレイション 膜モジュールから固形分を除去するための方法および装置
JP4954880B2 (ja) 2004-09-15 2012-06-20 シーメンス・ウォーター・テクノロジーズ・コーポレーション 連続的に変化する通気
US7591950B2 (en) 2004-11-02 2009-09-22 Siemens Water Technologies Corp. Submerged cross-flow filtration
WO2006066319A1 (en) 2004-12-24 2006-06-29 Siemens Water Technologies Corp. Cleaning in membrane filtration systems
EP1838422A4 (en) 2004-12-24 2009-09-02 Siemens Water Tech Corp EASY GAS FLUSHING PROCESS AND APPROPRIATE DEVICE
US7767251B2 (en) * 2005-03-16 2010-08-03 Shiping Wang Repellent elastomeric article
CN101184548B (zh) 2005-04-29 2011-10-05 西门子水技术公司 用于膜滤器的化学清洗剂
JP2009504399A (ja) 2005-08-22 2009-02-05 シーメンス・ウォーター・テクノロジーズ・コーポレーション 管状マニホールドを使用して逆洗を最小化する水濾過のためのアセンブリ
WO2007044345A2 (en) 2005-10-05 2007-04-19 Siemens Water Technologies Corp. Method and apparatus for treating wastewater
US20080260954A1 (en) * 2005-10-11 2008-10-23 Rowan Johnson Paton Method of Binding Dry Reinforcement Fibres
US7455765B2 (en) 2006-01-25 2008-11-25 Siemens Water Technologies Corp. Wastewater treatment system and method
US8293098B2 (en) 2006-10-24 2012-10-23 Siemens Industry, Inc. Infiltration/inflow control for membrane bioreactor
US20080118541A1 (en) * 2006-11-21 2008-05-22 Abbott Laboratories Use of a terpolymer of tetrafluoroethylene, hexafluoropropylene, and vinylidene fluoride in drug eluting coatings on medical devices
WO2008123972A1 (en) 2007-04-02 2008-10-16 Siemens Water Technologies Corp. Improved infiltration/inflow control for membrane bioreactor
US9764288B2 (en) 2007-04-04 2017-09-19 Evoqua Water Technologies Llc Membrane module protection
AU2008263139B2 (en) 2007-05-29 2011-08-25 Evoqua Water Technologies Llc Membrane cleaning with pulsed airlift pump
JP5452075B2 (ja) * 2008-05-20 2014-03-26 大成プラス株式会社 通気栓とその製造方法
US20090297760A1 (en) * 2008-05-28 2009-12-03 Q'so Incorporated Method for Surface Coating for Improved Weatherability of Building Products
JP2013500144A (ja) 2008-07-24 2013-01-07 シーメンス インダストリー インコーポレイテッド 濾過システムにおける濾過膜モジュールアレイに対して構造的支持を施すための方法および濾過システム
AU2010101488B4 (en) 2009-06-11 2013-05-02 Evoqua Water Technologies Llc Methods for cleaning a porous polymeric membrane and a kit for cleaning a porous polymeric membrane
ES2738898T3 (es) 2010-04-30 2020-01-27 Evoqua Water Tech Llc Dispositivo de distribución de flujo de fluido
AU2011305377B2 (en) 2010-09-24 2014-11-20 Evoqua Water Technologies Llc Fluid control manifold for membrane filtration system
CN103958034B (zh) 2011-09-30 2017-03-22 伊沃夸水处理技术有限责任公司 隔离阀
CA2850309C (en) 2011-09-30 2020-01-07 Evoqua Water Technologies Llc Improved manifold arrangement
US9533261B2 (en) 2012-06-28 2017-01-03 Evoqua Water Technologies Llc Potting method
KR20150054918A (ko) 2012-09-14 2015-05-20 에보쿠아 워터 테크놀로지스 엘엘씨 막을 위한 중합체 블렌드
AU2013231145B2 (en) 2012-09-26 2017-08-17 Evoqua Water Technologies Llc Membrane potting methods
EP2900356A1 (en) 2012-09-27 2015-08-05 Evoqua Water Technologies LLC Gas scouring apparatus for immersed membranes
EP3052221B1 (en) 2013-10-02 2022-12-14 Rohm & Haas Electronic Materials Singapore Pte. Ltd Device for repairing a membrane filtration module
WO2017011068A1 (en) 2015-07-14 2017-01-19 Evoqua Water Technologies Llc Aeration device for filtration system

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE626816A (es) * 1962-01-05
GB1143635A (es) * 1965-03-09
US3628997A (en) * 1967-10-30 1971-12-21 Colgate Palmolive Co Method and means for treating fibrous materials and articles produced thereby
JPS4825755A (es) * 1971-08-06 1973-04-04
US3767462A (en) * 1971-10-28 1973-10-23 Rca Corp Method for fabrication of polycrystalline films
JPS5530016B2 (es) * 1972-03-22 1980-08-07
US4073999A (en) * 1975-05-09 1978-02-14 Minnesota Mining And Manufacturing Company Porous ceramic or metallic coatings and articles
GB1552942A (en) * 1975-07-17 1979-09-19 Sumitomo Electric Industries Process for producing a porous material having a fine pore size
JPS5211261A (en) * 1975-07-17 1977-01-28 Sumitomo Electric Industries Method of producing porous material
JPS5512821A (en) * 1978-07-04 1980-01-29 Unitika Ltd Production of waterrproof fabric with air permeability
DE2902095C2 (de) * 1979-01-19 1986-07-17 Skw Trostberg Ag, 8223 Trostberg Einbrennlack auf Basis einer Polyvinylidenfluoridlösung, Verfahren zu seiner Herstellung und dessen Verwendung zum Beschichten von Kunststoffen
NL7902159A (nl) * 1979-03-20 1980-09-23 Philips Nv Kleurentelevisiebeeldbuis.
US4414280A (en) * 1980-08-08 1983-11-08 E. I. Du Pont De Nemours And Company Membranes and composites from fluoropolymer solutions
JPS594473A (ja) * 1982-06-28 1984-01-11 Asahi Glass Co Ltd セメント系基材の塗装仕上げ方法
JPS59228081A (ja) * 1983-06-06 1984-12-21 株式会社クラレ 通気性に優れた撥水性織物
SE452110B (sv) * 1984-11-08 1987-11-16 Medinvent Sa Flerskiktat protesmaterial samt forfarande for dess framstellning
US4743470A (en) * 1985-03-02 1988-05-10 Bayer Aktiengesellschaft Spreading pastes containing polyurethane plastics and a process for the production of polyurethane coatings permeable to water vapor
DD255282A1 (de) * 1986-12-22 1988-03-30 Medizin Labortechnik Veb K Verfahren zur hydrophobierung mikrobakteriendichter luftfiltermaterialien
US4894157A (en) * 1987-10-05 1990-01-16 Micron Separations, Inc. Process for producing supported celluosic membranes and products

Also Published As

Publication number Publication date
NO884679L (no) 1988-12-05
EP0348425A1 (en) 1990-01-03
WO1988006200A1 (en) 1988-08-25
NO177795C (no) 1995-11-22
DE3882366D1 (de) 1993-08-19
NO884679D0 (no) 1988-10-20
DK589488A (da) 1988-10-21
ATE91512T1 (de) 1993-07-15
NO177795B (no) 1995-08-14
GB8704142D0 (en) 1987-04-01
AU1420188A (en) 1988-09-14
DE3882366T2 (de) 1993-10-21
AU617310B2 (en) 1991-11-28
JPH02503323A (ja) 1990-10-11
EP0348425B1 (en) 1993-07-14
JP2798258B2 (ja) 1998-09-17
DK589488D0 (da) 1988-10-21
US5171611A (en) 1992-12-15

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