WO1997020005A1 - Utilisation d'une composition de revetement renfermant des polycondensats inorganiques contenant du fluor - Google Patents

Utilisation d'une composition de revetement renfermant des polycondensats inorganiques contenant du fluor Download PDF

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Publication number
WO1997020005A1
WO1997020005A1 PCT/EP1996/005308 EP9605308W WO9720005A1 WO 1997020005 A1 WO1997020005 A1 WO 1997020005A1 EP 9605308 W EP9605308 W EP 9605308W WO 9720005 A1 WO9720005 A1 WO 9720005A1
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WO
WIPO (PCT)
Prior art keywords
use according
groups
atoms
coating
polycondensates
Prior art date
Application number
PCT/EP1996/005308
Other languages
German (de)
English (en)
Inventor
Reiner Kasemann
Helmut Schmidt
Gerhard Jonschker
Stefan Brück
Volker Gerhard
Martin Mennig
Original Assignee
Institut für Neue Materialien Gemeinnützige GmbH
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 Institut für Neue Materialien Gemeinnützige GmbH filed Critical Institut für Neue Materialien Gemeinnützige GmbH
Priority to AU10958/97A priority Critical patent/AU1095897A/en
Publication of WO1997020005A1 publication Critical patent/WO1997020005A1/fr

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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
    • C09D185/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing atoms other than silicon, sulfur, nitrogen, oxygen, and carbon; Coating compositions based on derivatives of such polymers
    • 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
    • C09D183/00—Coating compositions based on 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; Coating compositions based on derivatives of such polymers
    • C09D183/04—Polysiloxanes
    • C09D183/08—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
    • C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16

Definitions

  • EP-A-587 667 (W092 / 21729) describes a coating composition based on fluorine-containing inorganic polycondensates and their preparation.
  • this document describes a coating composition based on
  • fluorine-containing coating compositions are suitable for a wide variety of substrates and, after corresponding curing, to give coatings with a wide variety of advantageous properties, in particular transparency, flexibility, mechanical resistance and abrasion resistance and excellent non-stick properties to a wide variety of substances (such as water, oils, for example) , Dirt, dust, etc.).
  • the present invention thus relates to the use of a coating composition which contains 5 polycondensates based on one or more compounds of the elements M of the main groups III to V and the subgroups II to IV of the periodic table of the elements which are capable of hydrolytic polycondensation, in which polycondensates at least a part of the 0 central atoms M each have at least one organic group G which has at least 2 aliphatic carbon atoms to which at least one fluorine atom is bonded, either directly via one of the carbon atoms or via a connecting group A, for coating 5 surfaces made of metal, plastics, possibly modified natural materials, ceramics, concrete, clay and / or glass.
  • the above metal surfaces also include 0 metal compound surfaces.
  • metals such as copper, silver, gold, platinum, palladium, iron, nickel, chromium, zinc, tin, lead, aluminum and titanium as well as alloys containing these metals such as e.g. (Stainless) steel, brass and bronze. '5
  • the above coating composition can also be applied to surfaces of oxides, carbides, silicides, nitrides, borides, etc. of metals and non-metals, e.g. Surfaces containing metal oxides, carbides such as silicon carbide, tungsten carbide and boron carbide,
  • silicon nitride silicon dioxide, etc.
  • glass includes all types of glass with the most varied compositions, such as Soda-lime glass, potassium glass, borosilicate glass, lead glass, barium glass, phosphate glass, optical glass, historical glass, etc.
  • thermoplastics thermosets, elastomers and foamed plastics.
  • specific examples of such plastics are e.g. :
  • Homo- and copolymers of olefinically unsaturated compounds e.g. Olefins such as ethylene, propylene, butenes, pentenes, hexenes, octenes and decenes; Serve like butadiene, chloroprene, isoprene, hexadiene,
  • halogenated vinyl compounds such as Vinyl chloride, vinyl fluoride, vinylidene chloride,
  • Vinylidene fluoride and tetrafluoroethylene ⁇ , ⁇ -unsaturated carbonyl compounds such as e.g. Acrylic acid, methacrylic acid, crotonic acid, maleic acid and fumaric acid and their derivatives
  • Polyester such as Polyethylene terephthalate and polybutylene terephthalate; Polyamides such as Nylons;
  • Polyimides Polyurethanes; Polyether; Polysulfones; Polyacetals; Epoxy resins; Polycarbonates; Polyphenylene sulfides; synthetic rubbers (optionally vulcanized); (vulcanized) natural rubber; Phenol-formaldehyde resins; Phenol urea resins; Phenol-melamine resins; Alkyd resins; and polysiloxanes.
  • plastics can use the usual plastic additives such as Contain fillers, pigments, dyes, reinforcing agents (e.g. (glass) fibers), stabilizers, flame retardants, inhibitors, lubricants, etc.
  • plastic additives such as Contain fillers, pigments, dyes, reinforcing agents (e.g. (glass) fibers), stabilizers, flame retardants, inhibitors, lubricants, etc.
  • compositions are particularly suitable for coating buildings and parts thereof; Means of transportation and parts thereof; Work equipment, devices and machines for commercial or industrial purposes and research and parts thereof; Household items and work tools for household purposes, and parts thereof; Equipment, devices and aids for games, sports and leisure and parts thereof; as well as devices, aids and devices for medical purposes and the sick. Specific examples of such coatable materials or articles are given below.
  • Means of transport and transportation e.g. cars, trucks, buses, motorbikes, mopeds, bicycles, trains, trams, ships and planes
  • transport and transportation e.g. cars, trucks, buses, motorbikes, mopeds, bicycles, trains, trams, ships and planes
  • plastic visors for motorcycles, instruments for motorcycles, seats, saddles, door handles, steering wheels, tire rims, tank sockets (especially for diesel), license plates, luggage racks, roof containers for Cars and cockpits.
  • the exterior coating of motor vehicles makes them easier to clean (wash).
  • Molds e.g. casting molds, especially made of metal
  • pouring hoppers filling systems, extruders, water wheels, rollers, conveyor belts, printing machines, screen printing stencils, filling machines, (machine) housings, injection molded parts, drilling heads, turbines, pipes (inside and outside), pumps, saw blades , Covers (e.g. for scales), keyboards, switches, buttons, ball bearings, shafts, screws, displays, solar cells, solar systems, tools, tool handles, liquid containers, insulators, capillaries, lenses, laboratory equipment (e.g.
  • Tablecloths dishes (e.g. made of porcelain and earthenware), glassware, cutlery (e.g. knives), trays, pans, pots, baking pans, cooking utensils (e.g. wooden spoons, rasps, garlic presses etc.), cooking hobs, heating plates, ovens (inside and outside), Flower vases, covers for wall clocks, TV sets (especially screens), stereo systems, housings for (electrical) household appliances, picture glazing, Christmas baubles, wallpapers, lamps and lights, upholstered furniture, objects made of leather. In particular, the coating of furniture makes it easier to clean and shows no stains on the surface.
  • Prostheses especially for limbs
  • implants catheters, artificial intestinal exits, braces, dentures, glasses (glasses and frames), medical cutlery (for operations and dental treatment), plaster casts, Medical thermometers and wheelchairs, as well as general hospital facilities to improve (among other things) hygiene.
  • Faucets generally all objects made of rubber, bottles, light, heat or pressure sensitive recording materials (before or after recording, e.g. photos) and church windows, as well as objects (e.g. made of sheet steel) that are exposed to graffiti (e.g. Exterior and interior of railway wagons, walls of subway and S-Bru stations, etc.).
  • objects e.g. made of sheet steel
  • graffiti e.g. Exterior and interior of railway wagons, walls of subway and S-Bru stations, etc.
  • the above elements M from the main groups III to V and the subgroups II to IV of the periodic table of the elements are e.g. by at least one element selected from silicon, aluminum, boron, tin, zirconium, titanium, vanadium and tin, Si, Al, Ti and Zr being preferred and Si being particularly preferred.
  • preferably 75 to 100 and particularly preferably 90 to 100% of all central atoms of the polycondensates present in the coating composition are silicon, aluminum, titanium and / or zirconium atoms.
  • M Usually at least 0.1% (preferably at least 0.5% and in particular at least 1%) of all central atoms present in the above polycondensates are M. bound organic groups G, which preferably have at least 3 (more preferably at least 4 and in particular at least 5) aliphatic carbon atoms, to each of which at least one and preferably at least two fluorine atoms are bonded. These groups G are preferably partially fluorinated alkyl and / or alkenyl groups. These groups can also be groups derived from fluorinated alkanoic and alkenoic acids, for example. In this case you can chelate the corresponding acid with a
  • Examples of partially fluorinated groups G which can be used according to the invention (and are also preferred according to the invention) are groups which have aliphatic carbon atoms to which a total of 2 to 30 (preferably 3 to 25, more preferably 5 to 20 and particularly preferably 8 to 18) fluorine atoms are bound, and which (at least in the case of direct binding of G to M) are each separated from the central atom M by at least 2 atoms (preferably carbon atoms).
  • Carbon atoms are bound (eg in the case of C g F 4 ). It is also possible for one or more fluorine atoms to be attached an aliphatic carbon atom from which a double or triple bond originates.
  • fluorine-containing groups which are bonded directly to preferably silicon atoms are preferred. Specific examples of such fluorine-containing groups are, for example:
  • nC 8 F 13 CH 2 CH 2 -, nC 8 F 17 CH 2 CH 2 - and nC 1Q F 21 CH 2 CH 2 - are particularly preferred.
  • fluorine-containing groups G can also be used according to the invention, as can mixtures of different fluorine-containing groups G.
  • At least a portion of the central atoms M of the polycondensates is preferably also at least one (for example one or two) non-hydrolyzable or non-hydrolyzing organic group with functional grouping Z.
  • non-hydrolyzing is understood to mean a group, which is in principle accessible to hydrolysis, but actually does not hydrolyze under the given conditions during the production of the polycondensates, the coating and the subsequent drying and / or curing. Examples of the latter groups can also include, for example, the above chelating groups A.
  • One or two (preferably one) non-hydrolyzable or non-hydrolyzing groups are preferably bound to at least 0.1% and in particular at least 0.5% of the central atoms M in the polycondensates.
  • These groups can be selected from functionalized, for example (Substituted) alkyl (in particular C 1 _ 4 -alkyl, such as methyl, ethyl, propyl and butyl), alkenyl (in particular C 2 _ 4 -alkenyl, such as vinyl, 1-propenyl, 2-propenyl and butenyl), alkynyl (in particular C 2 _ 4 alkynyl, such as ethynyl and propynyl) and functionalized aryl
  • alkyl in particular C 1 _ 4 -alkyl, such as methyl, ethyl, propyl and butyl
  • alkenyl in particular C 2 _ 4 -alkenyl, such as vinyl, 1-propeny
  • alkyl radicals also include the corresponding cyclic and aryl-substituted radicals, such as cyclohexyl and benzyl, while the alkenyl and alkynyl groups may also be cyclic and the aryl groups mentioned should also include alkaryl groups (such as tolyl and xylyl).
  • Particularly preferred groups are groups which have an (optionally multiply) unsaturated carbon-carbon bond and / or have a highly reactive functional group such as epoxy.
  • unsaturated groups are in particular to be mentioned groups, acryloxy a (meth) (particularly a (meth) acryloxy-C 1 _ 4 - alkyl group such as (meth) acryloxypropyl) feature.
  • Central atoms M are present, in particular also those which are derived from long-chain saturated (but also unsaturated) fatty acids (in this case preferably bound to the central atom via a chelating group A).
  • the (partially) hydrolyzable starting compounds used to produce the coating composition or polycondensates used according to the invention are those of elements of main groups III to V and subgroups II to IV of the periodic table.
  • other hydrolyzable compounds can also be used, in particular those of elements of main groups I and II of the periodic table (e.g. Na, K, Ca and Mg) and subgroups V to VIII of the
  • the compounds just mentioned preferably make up no more than 10 and in particular no more than 5 mol percent of the hydrolyzable monomeric compounds used overall.
  • hydrolyzable groups in the starting compounds are - depending in part on the central atom M - halogen (F, Cl, Br and I, especially Cl and Br), alkoxy (especially C 1 _ 4 alkoxy, such as methoxy, ethoxy, n-propoxy, i-propoxy and butoxy), aryloxy (especially C g _ 1 () aryloxy, e.g. phenoxy), acyloxy (in particular C ⁇ _ 4 -acyloxy, for example acetoxy and propionyloxy) and acyl (for example acetyl).
  • halogen F, Cl, Br and I, especially Cl and Br
  • alkoxy especially C 1 _ 4 alkoxy, such as methoxy, ethoxy, n-propoxy, i-propoxy and butoxy
  • aryloxy especially C g _ 1 () aryloxy, e.g. phenoxy
  • acyloxy in particular C ⁇ _ 4 -
  • hydrolyzable groups which may also be mentioned are hydrogen and alkoxy radicals having 5 to 20, in particular 5 to 10, carbon atoms and halogen and alkoxy radicals. substituted alkoxy groups (eg ß-methoxyethoxy).
  • Hydrolysis products may sooner or later also have to be removed in any suitable manner (in particular if such a hydrolysis product in the coating composition used according to the invention would have an unfavorable influence on the material to be coated or its components), those hydrolyzable groups which do not have any substituents are particularly preferred and low molecular weight hydrolysis products such as lower alcohols such as methanol, ethanol, propanol and butanols.
  • the latter hydrolyzable groups are also preferred because they have practically no influence on the pH during hydrolysis (in contrast to e.g. halogen).
  • the coating composition used according to the invention will contain a solvent for adjusting the viscosity of the preserving liquid.
  • This solvent can be water and / or organic solvents.
  • Organic solvents include conventional solvents for paints and in particular the lower alcohols such as methanol, ethanol, propanol and the butanols, since these are usually already by-products of Polycondensation reaction can be formed using the preferred starting materials (see above).
  • Mixtures of solvents can of course also be used, for example mixtures of the by-products formed by the hydrolysis reaction (for example alcohols) and other (preferably volatile) solvents such as for example ethers, ketones, esters and (aliphatic or aromatic) hydrocarbons.
  • the total solids content of the coating composition used according to the invention is generally 10 to 75, preferably 15 to 50 and particularly preferably 20 to 40 percent by weight.
  • the coating composition can also contain compounds which can react with such groups or groups in the course of a thermally or photochemically induced reaction.
  • non-hydrolyzable or non-hydrolyzing organic groups with carbon-carbon double or triple bond such as (meth) acryloxyalkyl groups
  • organic unsaturated compounds are styrene,
  • Such compounds can also be partially or perfluorinated.
  • compounds which have (per) fluorinated groups which, during the preparation of the coating composition or the polycondensates, contain non-hydrolyzable or non- hydrolyzing non-fluorinated groups react and thereby provide fluorinated groups (for example by reaction of SH or NH groups with hexafluoropropene oxide).
  • fluorinated groups for example by reaction of SH or NH groups with hexafluoropropene oxide.
  • nanoscale particles make the coating more abrasion-resistant or scratch-resistant, for example, without impairing the transparency.
  • surface modification of nanoscale (ceramic) particles reference can be made, for example, to W093 / 21127. Furthermore, for example, in the case of the presence of epoxy-containing organic groups on central atoms M, the
  • Coating liquid contain compounds that have a (catalytic)
  • Ring opening polymerization e.g. Compounds containing hydroxyl and amine groups (e.g. phenols).
  • the coating composition preferably also contains a catalyst for the thermally and / or photochemically induced curing of the coating applied to the substrate Polycondensates.
  • a photopolymerization initiator can be added.
  • the commercially available photoinitiators can be used. Examples include Irgacure (R) 184 (1-hydroxycyclohexylphenyl ketone), Irgacure (R) 500
  • Suitable thermal initiators include organic peroxides in the form of diacyl peroxides, peroxydicarbonates, alkyl peresters, dialkyl peroxides, perketals, ketone peroxides and alkyl hydroperoxides. Specific examples of such thermal
  • Initiators are dibenzoyl peroxide, tert-butyl perbenzoate and azobisisobutyronitrile.
  • Coating composition may be present, e.g. tertiary amines (e.g. imidazole and its derivatives).
  • a coating composition containing 30 to 50 weight percent solids may contain initiator in an amount of e.g. 0.5 to 2 percent by weight (based on the total amount) can be added.
  • the coating composition produced can either as such or after partial or almost complete removal of the solvent used or of the solvent formed during the reaction (for example the alcohols formed by hydrolysis of the alkoxides) and / or after the addition of a suitable solvent for the purpose
  • the coating composition optionally (and preferably) provided with an initiator and optionally other additives is then brought into contact with the substrate.
  • the coating composition can be applied in a conventional manner to the objects or materials to be coated. Although the resulting coatings usually adhere very well to the substrates, it may be advisable in certain cases to carry out a surface treatment (e.g. corona treatment, treatment with a primer) before coating.
  • a surface treatment e.g. corona treatment, treatment with a primer
  • Common coating processes are e.g. Diving, flooding, pulling, pouring, spinning, spraying and painting.
  • the coating composition can be cured thermally and / or by irradiation in a manner known per se, depending on the type or the presence of an initiator.
  • the curing temperatures are preferably at least 50 ° C., in particular at least 90 ° C.
  • the maximum curing temperature is also determined by the thermal load capacity of the substrate to be coated is determined. Curing temperatures of 250 ° C. and in particular 180 ° C. are preferably not exceeded.

Abstract

L'invention concerne l'utilisation d'une composition de revêtement renfermant des polycondensats à base d'au moins un composé, apte à une polycondensation hydrolitique, des éléments M des groupes III à V et des sous-groupes II à IV de la Classification périodique. Dans ces polycondensats, au moins un groupe organique G comprenant au moins 2 atomes de carbone aliphatiques à chacun desquels est lié au moins un atome de fluor, est lié à au moins une partie des atomes centraux M soit directement par l'intermédiaire d'un des atomes de carbone, soit par l'intermédiaire d'un groupe de liaison A. L'invention concerne l'utilisation de ladite composition de revêtement pour recouvrir des surfaces en métal, en plastique, éventuellement en matériau naturel modifié, en céramique, en béton, en terre et/ou en verre.
PCT/EP1996/005308 1995-11-30 1996-11-29 Utilisation d'une composition de revetement renfermant des polycondensats inorganiques contenant du fluor WO1997020005A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU10958/97A AU1095897A (en) 1995-11-30 1996-11-29 Use of a fluorine-containing coating compound containing inorganic polycondensates

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1995144763 DE19544763B4 (de) 1995-11-30 1995-11-30 Verwendung einer fluorhaltige anorganische Polykondensate enthaltenden Beschichtungszusammensetzung zum Schutz vor Graffiti
DE19544763.8 1995-11-30

Publications (1)

Publication Number Publication Date
WO1997020005A1 true WO1997020005A1 (fr) 1997-06-05

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Country Status (3)

Country Link
AU (1) AU1095897A (fr)
DE (1) DE19544763B4 (fr)
WO (1) WO1997020005A1 (fr)

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US6379448B1 (en) 1999-04-16 2002-04-30 Ict Coatings N.V. Siliceous substrate with a silane layer and its manufacture
DE10348954B3 (de) * 2003-10-18 2005-01-05 Clariant Gmbh Verfahren zur Herstellung von Beschichtungsformulierungen für wasser- und ölabweisende Beschichtungen
US6887367B2 (en) 2001-07-16 2005-05-03 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Process for the coating of passivated metallic surfaces of components and such coated components

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DE19815179C2 (de) * 1998-04-04 2000-02-24 Manfred Hornschuh Druckverfahren und Vorrichtung zur Durchführung dieses Druckverfahrens
US6167935B1 (en) 1998-09-14 2001-01-02 James E. Heider Labeling machine
US6471802B1 (en) 1998-12-07 2002-10-29 Gerro Plast Gmbh Labeling apparatus and method
DE19917367A1 (de) * 1999-04-16 2000-10-19 Inst Neue Mat Gemein Gmbh Verfahren zur Herstellung von Überzügen auf Basis fluorhaltiger Kondensate
DE19964309C2 (de) 1999-11-15 2003-07-03 Degussa Triamino- und fluoralkylfunktionelle Organosiloxane oder deren Gemische
DE19958336A1 (de) * 1999-12-03 2001-06-07 Inst Neue Mat Gemein Gmbh Selbstvernetzende Beschichtungszusammensetzungen auf Basis anorganischer fluorhaltiger Polykondensate
DE10154144A1 (de) * 2001-11-03 2003-05-15 Km Europa Metal Ag Isoliertes Leitungsrohr
DE10219127A1 (de) * 2002-04-29 2003-11-06 Inst Neue Mat Gemein Gmbh Substrate mit Biofilm-hemmender Beschichtung
DE10253839A1 (de) 2002-11-14 2004-05-27 Hansgrohe Ag Beschichtungsverfahren
DE10253841A1 (de) * 2002-11-14 2004-05-27 Hansgrohe Ag Beschichtungsverfahren
DE10260307B4 (de) * 2002-12-20 2007-02-22 Siemens Audiologische Technik Gmbh Elektroakustischer Miniaturwandler für ein Hörhilfegerät
DE10339912B4 (de) 2003-08-29 2016-07-21 Ivoclar Vivadent Ag Dentale Beschichtungsmaterialien, deren Verwendung sowie Verfahren zur Beschichtung einer Substratoberfläche
DE102004037043A1 (de) 2004-07-29 2006-03-23 Degussa Ag Blockkondensate organofunktioneller Siloxane, deren Herstellung, Verwendung sowie deren Eigenschaften
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DE102012004278B4 (de) 2011-03-31 2022-07-07 Few Chemicals Gmbh Beschichtungszusammensetzung für abriebbeständige und antiadhäsive Oberflächenbeschichtungen, deren Verwendung sowie beschichtete Oberfläche
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Publication number Priority date Publication date Assignee Title
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US6887367B2 (en) 2001-07-16 2005-05-03 Fraunhofer-Gesellschaft Zur Forderung Der Angewandten Forschung E.V. Process for the coating of passivated metallic surfaces of components and such coated components
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