CA2241059A1 - Photocatalyst process for making surface hydrophillic - Google Patents

Photocatalyst process for making surface hydrophillic

Info

Publication number
CA2241059A1
CA2241059A1 CA002241059A CA2241059A CA2241059A1 CA 2241059 A1 CA2241059 A1 CA 2241059A1 CA 002241059 A CA002241059 A CA 002241059A CA 2241059 A CA2241059 A CA 2241059A CA 2241059 A1 CA2241059 A1 CA 2241059A1
Authority
CA
Canada
Prior art keywords
coating
photocatalytic
substrate
hydrogen bond
gamma
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.)
Granted
Application number
CA002241059A
Other languages
French (fr)
Other versions
CA2241059C (en
Inventor
Makoto Hayakawa
Eiichi Kojima
Keiichiro Norimoto
Mitsuyoshi Machida
Atsushi Kitamura
Toshiya Watanabe
Makoto Chikuni
Akira Fujishima
Kazuhito Hashimoto
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.)
Toto Ltd
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=27522792&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2241059(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Priority claimed from PCT/JP1996/003694 external-priority patent/WO1997023657A1/en
Publication of CA2241059A1 publication Critical patent/CA2241059A1/en
Application granted granted Critical
Publication of CA2241059C publication Critical patent/CA2241059C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
    • F28F13/18—Arrangements for modifying heat-transfer, e.g. increasing, decreasing by applying coatings, e.g. radiation-absorbing, radiation-reflecting; by surface treatment, e.g. polishing
    • 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
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2245/00—Coatings; Surface treatments
    • F28F2245/02—Coatings; Surface treatments hydrophilic

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • Catalysts (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
  • Laminated Bodies (AREA)
  • Paints Or Removers (AREA)

Abstract

A method for hydrophilifying the surface of a substrate by taking advantage of photocatalytic action.
The substrate has a photocatalytic titanic coating (10).
The surface of the photocatalytic coating (10) bears the solid acid that increases a hydrogen bond component (.gamma.s h) in the surface energy in the solid/gas interface of the coating. Photoexcitation of the photocatalyst enhances the hydrogen bond component (.gamma.s h) in the surface energy of the photocatalytic coating (10), accelerating the physical adsorption of molecules of water in the atmosphere through a hydrogen bond (16) onto hydrogen atoms in a terminal OH
group (12), bonded to a titanium atom, and a bridge OH
group (14) on the surface of the coating. This results in the formation of a high density, physically adsorbed water layer (18) on the surface of the photocatalytic coating (10), thus permitting the surface of the substrate to be easily hydrophilified. The method is applicable to antifogging, antifouling, selfcleaning and cleaning of articles.
CA002241059A 1995-12-22 1996-12-18 Photocatalyst process for making surface hydrophillic Expired - Lifetime CA2241059C (en)

Applications Claiming Priority (11)

Application Number Priority Date Filing Date Title
JP35464995 1995-12-22
JP354649/1995 1995-12-22
JP4942096 1996-01-31
JP49420/1996 1996-01-31
JP20272696 1996-06-27
JP202726/1996 1996-06-27
JP25730496 1996-08-22
JP257304/1996 1996-08-22
JP27519396 1996-09-10
JP275193/1996 1996-09-10
PCT/JP1996/003694 WO1997023657A1 (en) 1995-12-22 1996-12-18 Method of feeding sintering material by use of magnetic forces

Publications (2)

Publication Number Publication Date
CA2241059A1 true CA2241059A1 (en) 1997-07-03
CA2241059C CA2241059C (en) 2007-03-06

Family

ID=27522792

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002241059A Expired - Lifetime CA2241059C (en) 1995-12-22 1996-12-18 Photocatalyst process for making surface hydrophillic

Country Status (8)

Country Link
JP (2) JP2917525B2 (en)
KR (1) KR100429933B1 (en)
AT (1) ATE252140T1 (en)
CA (1) CA2241059C (en)
DE (1) DE69630394T2 (en)
DK (1) DK0869156T3 (en)
MY (1) MY134705A (en)
PT (1) PT869156E (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113646067A (en) * 2019-03-29 2021-11-12 旭化成医疗株式会社 Porous membrane

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001010552A1 (en) 1999-08-05 2001-02-15 Kabushiki Kaisha Toyota Chuo Kenkyusho Photocatalytic material, photocatalytic article and method for their preparation
AU2001259451A1 (en) 2000-05-04 2001-11-12 Schott Donnelly Llc Chromogenic glazing
US6938546B2 (en) 2002-04-26 2005-09-06 Mitsubishi Heavy Industries, Ltd. Printing press, layered formation and making method thereof, and printing plate and making method thereof
EP1849835B1 (en) * 2005-02-18 2017-08-30 Nippon Soda Co., Ltd. Organic-inorganic composite body
AT505773B1 (en) * 2007-10-24 2009-04-15 Vaillant Austria Gmbh FUEL-INDEPENDENT ENERGY SUPPLY SYSTEM
DE102007054848B4 (en) 2007-11-16 2018-09-27 Erlus Aktiengesellschaft Ceramic shaped body with a photocatalytically active, air-cleaning, transparent surface coating, method for producing the same and its use
WO2009110236A1 (en) 2008-03-04 2009-09-11 株式会社 東芝 Hydrophilic member and hydrophilic articles made by using the same
JP4829321B2 (en) 2009-03-31 2011-12-07 株式会社東芝 Photocatalyst
KR102111006B1 (en) * 2018-11-16 2020-05-14 한동대학교 산학협력단 Method of manufacturing high hydrophilic titanium dioxide and method for analyzing titanium dioxide donor-acceptor interaction peak
CN109509400A (en) * 2018-12-03 2019-03-22 国网江苏省电力有限公司 A kind of preparation method of open air atmospheric environment long-life two-dimension code label
CN112997773B (en) * 2021-03-25 2022-11-22 江苏嘉仁建设工程有限公司 Illumination adjusting device for greenhouse

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113646067A (en) * 2019-03-29 2021-11-12 旭化成医疗株式会社 Porous membrane
CN113646067B (en) * 2019-03-29 2024-03-12 旭化成医疗株式会社 Porous membrane

Also Published As

Publication number Publication date
JP2917525B2 (en) 1999-07-12
KR100429933B1 (en) 2005-04-20
DK0869156T3 (en) 2004-02-16
KR19990076677A (en) 1999-10-15
ATE252140T1 (en) 2003-11-15
DE69630394T2 (en) 2004-05-19
CA2241059C (en) 2007-03-06
MY134705A (en) 2007-12-31
DE69630394D1 (en) 2003-11-20
PT869156E (en) 2004-03-31
JPH10140046A (en) 1998-05-26

Similar Documents

Publication Publication Date Title
EP0869156A4 (en) Photocatalytic process for making surface hydrophilic and composite material having photocatalytically hydrophilic surface
CA2241059A1 (en) Photocatalyst process for making surface hydrophillic
EP0684075A1 (en) Multi-functional material having photo-catalytic function and production method therefor
US5853866A (en) Multi-functional material with photocalytic functions and method of manufacturing same
JP2918787B2 (en) Photocatalyst and method for producing the same
EP1701779B1 (en) Preparation method of a metal palladium composite membrane or alloy palladium composite membrane
EP1997565B1 (en) Article with plasmopolymeric coating and method for its manufacture
CA2244752A1 (en) Functional coated product and process for producing the same and the use thereof
WO1998005589A1 (en) Method for coating amorphous titanium peroxide
ATE284842T1 (en) METHOD FOR PRODUCING ALUMINUM OXIDES AND PRODUCTS MADE THEREFROM
HK1007889A1 (en) Method for producing thick ceramic films by a sol gel coating process
AU2002333160A1 (en) Self-cleaning ceramic layers for baking ovens and method for production of self-cleaning ceramic layers
CA2344945A1 (en) Modified photocatalyst sol
TW375534B (en) Titanium oxide photocatalyst and producing method
CA2204620A1 (en) Treatment of aluminium or aluminium alloys
AU3800495A (en) Process for coating electrically non-conducting surfaces with connected metal structures
JPH09313948A (en) Resin having photocatalyst surface, resin coating material and its production
JPH10249985A (en) Manufacture of organic/metal oxide composite thin film
JPH036653B2 (en)
CN111530305A (en) Polypyrrole/metal mesh porous filtering membrane with nanocone structure and preparation method and application thereof
US3672937A (en) Process for the non-electrolytic metallizing of non-conductors
JP2001152362A (en) Photocatalyst-coated metallic sheet
JP2000014755A (en) Metal plate having photocatalytic function
CN1164436A (en) Method for preparation of extra-thin palladium-ceramic compound film
CN1027087C (en) Process for forming membrane

Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20161219