WO2000005000A1 - Surface coatings - Google Patents
Surface coatings Download PDFInfo
- Publication number
- WO2000005000A1 WO2000005000A1 PCT/GB1999/002121 GB9902121W WO0005000A1 WO 2000005000 A1 WO2000005000 A1 WO 2000005000A1 GB 9902121 W GB9902121 W GB 9902121W WO 0005000 A1 WO0005000 A1 WO 0005000A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- substrate
- optionally substituted
- alkyl
- group
- compound
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/62—Plasma-deposition of organic layers
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/50—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges
- C23C16/515—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges using pulsed discharges
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- 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
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/02—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements ultrasonic or sonic; Corona discharge
- D06M10/025—Corona discharge or low temperature plasma
-
- 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
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
- D06M10/08—Organic compounds
-
- 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
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/04—Physical treatment combined with treatment with chemical compounds or elements
- D06M10/08—Organic compounds
- D06M10/10—Macromolecular compounds
Definitions
- the present invention relates to the coating of surfaces, in particular to the production of oil- and water- repellent surfaces, as well as to coated articles obtained thereby.
- Oil- and water- repellent treatments for a wide variety of surfaces are in widespread use. For example, it may be desirable to impart such properties to solid surfaces, such as metal, glass, ceramics, paper, polymers etc. in order to improve preservation properties, or to prevent or inhibit soiling.
- a particular substrate which requires such coatings are fabrics, in particular for outdoor clothing applications, sportswear, leisurewear and in military applications. Their treatments generally require the incorporation of a fluoropolymer into or more particularly, fixed onto the surface of the clothing fabric.
- the degree of oil and water repellency is a function of the number and length of fluorocarbon groups or moieties that can be fitted into the available space. The greater the concentration of such moieties, the greater the repellency of the finish.
- Oil- and water- repellent textile treatments are generally based on fluoropolymers that are applied to fabric in the form of an aqueous emulsion.
- the fabric remains breathable and permeable to air since the treatment simply coats the fibres with a very thin, liquid-repellent film.
- cross-linking resins that bind the fluoropolymer to fibres. Whilst good levels of durability towards laundering and dry- cleaning can be achieved in this way, the cross-linking resins can seriously damage cellulosic fibres and reduce the mechanical strength of the material .
- Plasma deposition techniques have been quite widely used for the deposition of polymeric coatings onto a range of surfaces. This technique is recognised as being a clean, dry technique that generates little waste compared to conventional wet chemical methods. Using this method, plasmas are generated from small organic molecules, which are subjected to an ionising electrical field under low pressure conditions. When this is done in the presence of a substrate, the ions, radicals and excited molecules of the compound in the plasma polymerise in the gas phase and react with a growing polymer film on the substrate. Conventional polymer synthesis tends to produce structures containing repeat units which bear a strong resemblance to the monomer species, whereas a polymer network generated using a plasma can be extremely complex.
- US Patent No 5,328,576 describes the treatment of fabric or paper surfaces to impart liquid repellent properties by subjecting the surfaces to a pre-treatment with an oxygen plasma, followed by plasma polymerisation of methane.
- Japanese application no. 02011606 describes the plasma polymerisation of compounds including fluorosubstituted acrylates . In that process, a mixture of the fluorosubstituted acrylate compounds and an inert gas are subjected to a glow discharge.
- Copending International Patent application based upon British Patent Application Nos . 9712338.4 and 9720078.6 describes a method method for producing polymer and particular halopolymer coatings which are water and/or oil repellent on surfaces by the plasma deposition of monomer compounds which include carbon-carbon double bonds. The applicants have found that the method can be extended to the deposition of other compounds. In particular monomers which are unsaturated in that they contain no carbon-carbon double bonds may be employed in the process and similar advantageous results achieved.
- a method of coating a surface with a polymer layer comprises exposing said surface to a pulsed plasma comprising a monomeric saturated organic compound, said compound comprising an optionally substituted alkyl chain of at least 5 carbon atoms optionally interposed with a heteroatom; so as to form an oil or water repellent coating on said substrate.
- saturated means that the monomer does not contain multiple bonds (i.e. double or triple bonds) between two carbon atoms which are not part of an aromatic ring.
- heteroatom includes oxygen, sulphur, silicon or nitrogen atoms. Where the alkyl chain is interposed by a nitrogen atom, it will be substituted so as to form a secondary or tertiary amine . Similarly, silicons will be substituted appropriately, for example with two alkoxy groups .
- halo or halogen which refer to fluorine, chlorine, bromine and iodine.
- halo groups are fluoro.
- aryl refers to aromatic cyclic groups such as phenyl or napthyl, in particular phenyl.
- alkyl refers to straight or branched chains of carbon atoms, suitably of up to 50 carbon atoms in length. Derivatives of alkyl groups, such as would be understood by “alkoxy” include such groups.
- heterocyclyl includes aromatic and non aromatic rings or ring systems, suitably containing up to 12 atoms, up to three of which may be heteroatoms .
- the monomeric compound used in the process of the invention may comprise one or more optionally substituted alkyl chains, either as part of a branched alkane or as part of a more complex structure including rings and other functional groups . These may be present either in the monomer used as a starting material, or may be created in the monomer on application of the plasma, for example by the ring opening of an optionally substituted cycloalkyl monomer.
- Suitable optional substituents for the monomeric compounds of the invention include halo, cyano, nitro, oxo, epoxide, optionally substituted cycloalkyl, optionally substituted aryl, optionally substituted aralkyl, optionally substituted heterocyclyl, C(0) n R ⁇ OR 1 , S(0) m R ⁇ NR 2 R 3 , C(0)NR 2 R 3 ,
- Suitable optional substituents for aryl, aralkyl and cycloalkyl and heterocyclyl groups R 1 , R 2 and R 3 include halo, perhaloalkyl, mercapto, hydroxy, alkoxy, oxo, heteroaryloxy, alkenyloxy, alkynyloxy, alkoxyalkoxy, aryloxy (where the aryl group may be substituted by halo, nitro, or hydroxy) , cyano, nitro, amino, mono- or di-alkyl amino, alkylamido or oximino.
- Suitable alkyl chains which may be straight or branched, have from 5 to 50 carbon atoms, more suitably from 6 to 20 carbon atoms, and preferably from 8 to 15 carbon atoms, provided at least 5 carbon atoms form a straight chain.
- Monomeric compounds where the chains comprise unsubstituted alkyl groups are suitable for producing coatings which are water repellent. By substituting at least some of the hydrogen atoms in these chains with at least some halogen atoms, oil repellency may also be conferred by the coating.
- the monomeric compounds include haloalkyl moieties or comprise haloalkyls . Therefore, preferably the plasma used in the method of the invention will comprise a monomeric saturated haloalkyl containing organic compound.
- Particularly suitable monomeric organic compounds are those of formula (I)
- R 4 , R 5 , R 6, R 7 and R 8 are independently selected from hydrogen, halogen, alkyl, haloalkyl or aryl optionally substituted by halo; and R 9 is a group X-R 10 where R 10 is an alkyl or haloalkyl group and X is a bond; a group of formula -C (O) 0 (CH 2 ) X Y- where x is an integer of from 1 to 10 and Y is a bond or a sulphonamide group; or a group - (0) P R 11 (0) s (CH 2 ) t - where R X1 is aryl optionally substituted by halo, p is 0 or 1, s is 0 or 1 and t is 0 or an integer of from 1 to 10, provided that where s is 1, t is other than 0.
- Suitable haloalkyl groups for R 4 , R 5 , R 6 , R 6 , and R 8 are fluoroalkyl groups.
- the alkyl chains may be straight or branched and may include cyclic moieties and have, for example from 1 to 6 carbon atoms .
- the alkyl chains suitably comprise 1 or more carbon atoms, suitably from 1-20 carbon atoms and preferably from 6 to 12 carbon atoms .
- R 10 is a haloalkyl, and more preferably a perhaloalkyl group, particularly a perfluoroalkyl group of formula C z F 2z+1 where z is an integer of 1 or more, suitably from 1-20, and preferably from 6-12 such as 8 or 10.
- y is an integer which provides a suitable spacer group.
- y is from 1 to 5, preferably about 2.
- Suitable sulphonamide groups for Y include those of formula -N(R 1X ) S0 2 " where R 11 is hydrogen, alkyl or haloalkyl such as C 1-4 alkyl, in particular methyl or ethyl.
- the monomeric compounds used in the method of the invention preferably comprises an C 6 _ 25 alkane optionally substituted by halogen, in particular a perhaloalkane, and especially a perfluoroalkane .
- Compounds of formula (I) are either known compounds or they can be prepared from known compounds using conventional methods .
- Suitable plasmas for use in the method of the invention include non-equilibrium plasmas such as those generated by alternating current (AC) (e.g. radiofrequencies (Rf) , microwaves) or direct current (DC) . They may operate at atmospheric or sub-atmospheric pressures as are known in the art .
- AC alternating current
- Rf radiofrequencies
- DC direct current
- the plasma may comprise the monomeric compound alone, in the absence of other gases or in mixture with for example an inert gas. Plasmas consisting of monomeric compound alone may be achieved as illustrated hereinafter, by first evacuating the reactor vessel as far as possible, and then purging the reactor vessel with the organic compound for a period sufficient to ensure that the vessel is substantially free of other gases .
- the surface coated in accordance with the invention may be of any solid substrate, such as fabric, metal, glass, ceramics, paper or polymers.
- the surface comprises a fabric substrate such as a cellulosic fabric, to which oil- and/or water-repellency is to be applied.
- the fabric may be a synthetic fabric such as an acrylic/nylon fabric.
- the fabric may be untreated or it may have been subjected to earlier treatments.
- treatment in accordance with the invention can enhance the water repellency and confer a good oil-repellent finish onto fabric which already has a silicone finish which is water repellent only.
- polymerisation is suitably effected using vapours of compounds of formula (I) at pressures of from 0.01 to 10 mbar, suitably at about 0.2mbar.
- a glow discharge is then ignited by applying a high frequency voltage, for example at 13.56MHz.
- the applied fields are suitably of average power of up to 50W.
- Suitable pulsed fields are those which are applied in a sequence which yields very low average powers, for example of less than 10W and preferably of less than 1W. Examples of such sequences are those in which the power is on for
- the fields are suitably applied for a period sufficient to give the desired coating. In general, this will be from 30 seconds to 3 hours, preferably from 2 to 30 minutes, depending upon the nature of the monomer compound used and the substrate etc.
- Plasma polymerisation in accordance with the invention particularly at low average powers has been found to result in the deposition of highly fluorinated coatings which exhibit super-hydrophobicity.
- the pulses are applied at a variable rate, with relatively long pulses applied, for example of from 1 to 10 sees on initially, reducing down to short pulses for example of from lOO ⁇ s to l ⁇ s on and lO ⁇ s to lOOO ⁇ s off, later in the process. It is believed that such a regime leads to improved coatings because the initial long pulse leads to greater fragmentation of the monomer, leading to a more disorganised and therefore strongly bonding layer directly adjacent the substrate. Shorter late pulses means that the upper layers deposited retain a more organised structure and so contain a greater number of long chains, which are responsible for the oil and water repellency on the surface .
- the compound of formula (I) includes a perfluoroalkylated tail or moiety, in which case, the coating obtained by the process of the invention may have oleophobic as well as hydrophobic surface properties.
- the invention further provides a hydrophobic or oleophobic substrate which comprises a substrate comprising a coating of a alkyl polymer and particularly a haloalkyl polymer which has been applied by the method described above.
- the substrates are fabrics but they may be solid materials such as biomedical devices.
- the invention provides the use of an optionally substituted alkane or optionally substituted cycloalkane having at least 5 carbon atoms and particularly a perhaloalkane in the production of water and/or oil repellent coatings by pulsed plasma deposition methods.
- Figure 1 shows a diagram of the apparatus used to effect plasma deposition
- Figure 2 is a graph showing the characteristics of pulsed wave plasma polymerisation of perfluorododecane .
- Rerfluorododecane (C 12 F 26 ) was placed into a monomer tube (I) (Fig. 1) .
- a series of plasma polymerisation experiments were carried out in an inductively coupled cylindrical plasma reactor vessel (2) of 5cm diameter, 470cm 3 volume, base pressure of 7xl0 "3 mbar, and with a leak rate of better than 2xl0 "3 cm 3 minX
- the reactor vessel (2) was connected by way of a "viton" 0-ring (3) , a gas inlet (4) and a needle valve (5) to the monomer tube (1) .
- thermocouple pressure gauge (6) was connected by way of a Young's tap (7) to the reactor vessel (2) .
- An L-C matching unit (11) and a power meter (12) was used to couple the output of a 13.56 Mhz R.F. generator (13), which was connected to a power supply (14) , to copper coils (15) surrounding the reactor vessel (2) .
- This arrangement ensured that the standing wave ratio (SWR) of the transmitted power to partially ionised gas in the reactor rpft9 ⁇ SY 23U- ⁇ H3.ds-gnmlngffim ⁇ Edtor (16) was used to trigger the R.F
- the average power ⁇ P> delivered to the system during pulsing is given by the following formula:
- ⁇ P> P cw ⁇ T on / (T on + T o££ ) ⁇ where T on / (T on + T o££ ) is defined as the duty cycle and P cw is the average continuous wave power.
- the reactor vessel (2) was cleaned by soaking overnight in a chloros bleach bath, then scrubbing with detergent and finally rinsing with isopropyl alcohol followed by oven drying. The reactor vessel (2) was then incorporated into the assembly as shown in Figure 1 and further cleaned with a 50W air plasma for 30 minutes. Next the reactor (2) vessel was vented to air and the substrate to be coated (19) , in this case a glass slide, was placed in the centre of the chamber defined by the reactor vessel (2) on a glass plate (18) . The chamber was then evacuated back down to base pressure (7.0 x 10 "3 mbar) .
- Perfluoroalkane vapour was then introduced into the reaction chamber at a constant pressure of ⁇ 0.2mbar and allowed to purge the plasma reactor, followed by ignition of the glow discharge. Typically 2-15 minutes deposition time was found to be sufficient to give complete coverage of the substrate. After this, the R.F generator was switched off and the perfluoroalkane vapour allowed to continue to pass over the substrate for a further 5 minutes before evacuating the reactor back down to base pressure, and finally venting up to atmospheric pressure.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Materials Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
- Physical Vapour Deposition (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
- Chemical Or Physical Treatment Of Fibers (AREA)
- Materials Applied To Surfaces To Minimize Adherence Of Mist Or Water (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002338538A CA2338538C (en) | 1998-07-24 | 1999-07-02 | Surface coatings |
JP2000560983A JP4436567B2 (en) | 1998-07-24 | 1999-07-02 | Surface coating |
EP99929552A EP1104341A1 (en) | 1998-07-24 | 1999-07-02 | Surface coatings |
GB0101150A GB2354249B (en) | 1998-07-24 | 1999-07-02 | Surface coatings |
AU46341/99A AU749438B2 (en) | 1998-07-24 | 1999-07-02 | Surface coatings |
NZ509522A NZ509522A (en) | 1998-07-24 | 1999-07-02 | Surface coatings |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9816077.3A GB9816077D0 (en) | 1998-07-24 | 1998-07-24 | Surface coatings |
GB9816077.3 | 1998-07-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000005000A1 true WO2000005000A1 (en) | 2000-02-03 |
Family
ID=10836057
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1999/002121 WO2000005000A1 (en) | 1998-07-24 | 1999-07-02 | Surface coatings |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP1104341A1 (en) |
JP (2) | JP4436567B2 (en) |
CN (1) | CN1320062A (en) |
AU (1) | AU749438B2 (en) |
CA (1) | CA2338538C (en) |
GB (2) | GB9816077D0 (en) |
NZ (1) | NZ509522A (en) |
WO (1) | WO2000005000A1 (en) |
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WO2009010753A2 (en) * | 2007-07-17 | 2009-01-22 | P2I Limited | Plasma deposition apparatus |
WO2009030763A2 (en) * | 2007-09-06 | 2009-03-12 | Universite Libre De Bruxelles | Method for depositing a fluorinated layer from a precursor monomer |
WO2011064562A2 (en) | 2009-11-25 | 2011-06-03 | P2I Ltd | Novel product and method |
US7968154B2 (en) | 2002-05-17 | 2011-06-28 | P2I Limited | Atomisation of a precursor into an excitation medium for coating a remote substrate |
WO2011086368A2 (en) | 2010-01-14 | 2011-07-21 | P2I Ltd | Liquid repellent surfaces |
US8029872B2 (en) | 2002-06-01 | 2011-10-04 | P2I Limited | Application of a coating forming material onto at least one substrate |
US8524372B2 (en) | 2007-07-17 | 2013-09-03 | P2I Ltd. | Waterproof plasma treated footwear with liquid absorbing footbed |
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US8852693B2 (en) | 2011-05-19 | 2014-10-07 | Liquipel Ip Llc | Coated electronic devices and associated methods |
US8945478B2 (en) | 2006-10-28 | 2015-02-03 | P2I Ltd. | Microfabricated devices with coated or modified surface and method of making same |
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WO2021120542A1 (en) | 2019-12-18 | 2021-06-24 | 江苏菲沃泰纳米科技有限公司 | Coating apparatus and coating method |
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CA2507881A1 (en) * | 2003-01-30 | 2004-08-12 | Europlasma | Method for providing a coating on the surfaces of a product with an open cell structure throughout its structure and use of such a method |
BRPI0413769A (en) * | 2003-09-09 | 2006-10-31 | Dow Global Technologies Inc | process for depositing a film coating on the exposed surface of a substrate |
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WO1992010310A1 (en) * | 1990-12-14 | 1992-06-25 | Societe Nationale Elf Aquitaine | Method for depositing a thin antistatic film on the surface of a shaped object |
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WO1999032235A1 (en) * | 1997-12-18 | 1999-07-01 | Btg International Limited | Applying fluoropolymer film to a body |
-
1998
- 1998-07-24 GB GBGB9816077.3A patent/GB9816077D0/en not_active Ceased
-
1999
- 1999-07-02 EP EP99929552A patent/EP1104341A1/en not_active Withdrawn
- 1999-07-02 AU AU46341/99A patent/AU749438B2/en not_active Expired
- 1999-07-02 GB GB0101150A patent/GB2354249B/en not_active Expired - Lifetime
- 1999-07-02 CA CA002338538A patent/CA2338538C/en not_active Expired - Lifetime
- 1999-07-02 JP JP2000560983A patent/JP4436567B2/en not_active Expired - Fee Related
- 1999-07-02 NZ NZ509522A patent/NZ509522A/en not_active IP Right Cessation
- 1999-07-02 CN CN 99811406 patent/CN1320062A/en active Pending
- 1999-07-02 WO PCT/GB1999/002121 patent/WO2000005000A1/en not_active Application Discontinuation
-
2009
- 2009-09-25 JP JP2009220774A patent/JP2010042410A/en active Pending
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Also Published As
Publication number | Publication date |
---|---|
NZ509522A (en) | 2002-11-26 |
JP2002521179A (en) | 2002-07-16 |
GB2354249B (en) | 2002-06-05 |
JP4436567B2 (en) | 2010-03-24 |
GB2354249A (en) | 2001-03-21 |
AU749438B2 (en) | 2002-06-27 |
JP2010042410A (en) | 2010-02-25 |
CN1320062A (en) | 2001-10-31 |
GB9816077D0 (en) | 1998-09-23 |
EP1104341A1 (en) | 2001-06-06 |
CA2338538A1 (en) | 2000-02-03 |
AU4634199A (en) | 2000-02-14 |
GB0101150D0 (en) | 2001-02-28 |
CA2338538C (en) | 2009-12-15 |
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