EP1290096A1 - Farb- und/oder effektgebende wässrige beschichtungsstoffe und ihre verwendung zur herstellung farb- und/oder effektgebender, verformbarer laminate - Google Patents

Farb- und/oder effektgebende wässrige beschichtungsstoffe und ihre verwendung zur herstellung farb- und/oder effektgebender, verformbarer laminate

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Publication number
EP1290096A1
EP1290096A1 EP01960297A EP01960297A EP1290096A1 EP 1290096 A1 EP1290096 A1 EP 1290096A1 EP 01960297 A EP01960297 A EP 01960297A EP 01960297 A EP01960297 A EP 01960297A EP 1290096 A1 EP1290096 A1 EP 1290096A1
Authority
EP
European Patent Office
Prior art keywords
radicals
coating
effect
coating material
olefinically unsaturated
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.)
Withdrawn
Application number
EP01960297A
Other languages
German (de)
English (en)
French (fr)
Inventor
Wolfgang Bremser
Horst HINTZE-BRÜNING
Walter Lassmann
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.)
BASF Coatings GmbH
Original Assignee
BASF Coatings GmbH
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Filing date
Publication date
Application filed by BASF Coatings GmbH filed Critical BASF Coatings GmbH
Publication of EP1290096A1 publication Critical patent/EP1290096A1/de
Withdrawn legal-status Critical Current

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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
    • C09D125/00—Coating compositions based on 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 an aromatic carbocyclic ring; Coating compositions based on derivatives of such polymers
    • C09D125/02—Homopolymers or copolymers of hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
    • C08F265/04—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00 on to polymers of esters
    • C08F265/06—Polymerisation of acrylate or methacrylate esters on to polymers thereof
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F212/00—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 an aromatic carbocyclic ring
    • C08F212/02—Monomers containing only one unsaturated aliphatic radical
    • C08F212/32—Monomers containing only one unsaturated aliphatic radical containing two or more rings
    • 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
    • C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
    • C09D151/003—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds

Definitions

  • the present invention relates to new coloring and / or effect aqueous coating materials.
  • the present invention relates to the use of the new coating materials for the production of new color and / or effect deformable laminates.
  • the present invention also relates to a new process for the production of colorable and / or effect-giving, deformable laminates.
  • the present invention relates to the use of the new deformable laminates for the production of new color and / or effect moldings.
  • Coloring and / or effect-imparting aqueous coating materials have been known for a long time. They are used in particular as solid-color topcoats or basecoats, in particular waterborne basecoats, for the production of color and / or effect multi-layer coatings.
  • Solid-color topcoats or basecoats of this type are described, for example, in patent applications EP 0 089 497 A1, EP 0 256 540 A1, EP 0 260 447 A1, EP 0 297 576 A1, WO 96/12747, EP 0 523 610 A1 , EP 0 228 003 A1, EP 0 397 806 A1, EP 0 574 417 A1, EP 0 531 510 A1, EP 0 581 211 A1, EP 0 708 788 A1, EP 0 593 454 A1, DE-A-43 28 092 A1, EP 0 299 148 A1, EP 0 394 737 A1, EP 0 590 484 A1, EP 0 234 362 A1, EP 0 234 361 A1, EP 0 543 817 A1 1, WO 95/14721, EP 0 521 928 A1, EP 0 522 420 A1, EP 0 522 419 A1, EP 0 649 865 A1, EP 0 536
  • topcoats and basecoats provide coloring and / or effect topcoats and basecoats with excellent optical properties.
  • the basecoats in particular are characterized by excellent dichroic optical effects and / or metallic effects.
  • a disadvantage of the known solid-color topcoats and basecoats is that they still contain relatively high amounts of organic solvents. This is necessary in order to disperse the coloring and / or effect pigments well in the solid-color top coats and basecoats and to ensure that the coatings run smoothly.
  • the known topcoats and basecoats are difficult to deform, so that they are not suitable for the production of color and / or effect deformable laminates.
  • coloring coating materials are known that provide coatings that are highly deformable. These are mainly used for the coating of coils as part of the coil coating or coil coating process.
  • Coil coating or coil coating is a special form of roller coating (Römpp Lexikon Lacke und Druckmaschine, Georg Thieme Verlag,
  • the strip coating schematically comprises the following steps: After cleaning and degreasing the strip, a multi-stage chemical pretreatment is carried out with subsequent
  • the one-sided or two-sided application of the liquid coating material is carried out using two or three rollers, usually using the reverse roller coating method. After a very short evaporation time, the applied layer is thermally hardened Temperatures from 180 to 260 ° C for 10 to 60 s. When producing a multi-layer coating, application and curing are repeated. The speeds of coil coating systems are up to 250 m / min (Römpp Lexikon Lacke und Druckmaschinetician, Georg Thieme Verlag, Stuttgart, New York, 1998, page 55, "Belt Coating").
  • liquid lacquers previously used for coil coating lead to considerable emissions of organic solvents, which is no longer economically and ecologically justifiable.
  • the coil coating with powder coatings has the disadvantage that special application systems, such as electrostatic powder spraying systems, have to be used for slowly running belts or so-called “powder cloud chambers” for fast-running belts.
  • the known coating materials which are very well suited for the coil coating process, provide coloring coatings whose optical properties do not match the known color and / or effect base lacquers and topcoats.
  • color-imparting coating materials are known which are outstandingly suitable for the production of self-supporting lacquer films and foils or for the coating of foils.
  • optical properties are not yet fully satisfactory.
  • coating materials and coatings based on acrylate copolymers could offer an alternative to the known waterborne basecoats on the one hand and to the lacquers commonly used for strip coating processes. Coating materials based on acrylate copolymers are described, for example, in the patents EP 0 447 428 B1, EP 0 593 454 B1, EP 0 052 776 B1 or DE 42 04 518 A1.
  • Acrylate copolymers can be prepared in bulk, solution or emulsion by generally known polymerization processes. Polymerization processes for the preparation of acrylate copolymers, in particular polyacrylate resins, are generally known and have been described many times (see, for example: Houben Weyl, Methods of Organic Chemistry, 4th Edition, Volume 14/1, pages 24 to 255 (1961)).
  • the radical polymerization used to prepare the acrylate copolymers is often very exothermic and difficult to control. For the conduct of the reaction, this means that high concentrations of monomers and / or the so-called batch procedure, in which the entire amount of the monomers is placed in an aqueous medium, emulsified and then polymerized, must be avoided.
  • the targeted adjustment of defined molecular weights, molecular weight distributions and other properties often causes difficulties.
  • the targeted setting of a certain property profile of the acrylate copolymers is, however, for theirs Use as a binder in coloring and / or effect-giving coating materials of great importance, since this can directly influence the application properties of the coloring and / or effect-giving coating materials and the coatings.
  • the international patent application WO 92/13903 A describes a process for the preparation of copolymers with a low molecular weight by radical chain polymerization in the presence of a grappa transfer agent which has a carbon-sulfur double bond. These compounds not only act as chain transfer agents, but also as growth regulators, so that only low molecular weight copolymers result.
  • German patent application DE 199 30 067.4 describes the use of acrylate copolymers which contain diphenylethylene in copolymerized form for the production of filler coatings and stone chip protection primers. It is not clear from the patent application whether these coatings are easily deformable.
  • German patent application DE 199 30 665 describes the use of acrylate copolymers which contain diphenylethylene in copolymerized form for the production of color and / or effect basecoats.
  • the basecoats are used for the production of color and / or effect basecoats in the context of color and / or effect multicoat paint systems. It is not clear from the patent application whether these basecoats as such are deformable in such a way that they are suitable for the production of colorable and / or effect-giving, deformable laminates, paint films and paint films.
  • the object of the present invention is to provide new aqueous color and / or effect coating materials, the property profile of which can be easily adjusted with regard to their use, which in the
  • the property profile is to be set in a simple manner by using chemically stipulated copolymers which can be obtained by radical polymerization. These chemically structured copolymers are also said to be usable as rubbing resins, which advantageously make it possible to provide pigment pastes which can be mixed particularly well for the production of new coloring and / or effect-imparting coating materials.
  • radicals R 1 , R 2 , R 3 and R 4 each independently of one another represent hydrogen atoms or substituted or unsubstituted alkyl, cycloalkyl, alkylcycloalkyl, cycloalkylalkyl, aryl, alkylaryl,
  • Cycloalkylaryl, arylalkyl or arylcycloalkyl radicals with the proviso that at least two of the variables R 1 , R 2 , R 3 and R 4 are substituted or unsubstituted aryl, arylalkyl or arylcycloalkyl radicals, in particular substituted or unsubstituted aryl radicals; can be produced in an aqueous medium.
  • radicals R 1 , R 2 , R 3 and R 4 each independently represent hydrogen atoms or substituted or unsubstituted alkyl, cycloalkyl, alkylcycloalkyl, cycloalkylalkyl, aryl, alkylaryl, cycloalkylaryl, arylalkyl or arylcycloalkyl radicals with the proviso that at least two of the variables R 1 , R 2 , R 3 and R 4 are substituted or unsubstituted aryl, arylalkyl or
  • Arylcycloalkyl radicals in particular substituted or unsubstituted aryl radicals
  • coating material The new coloring and / or effect coating material is referred to below as "coating material according to the invention”.
  • the new strip coating process was found, in which a strip is continuously coated on one or both sides with at least one coating material, after which the applied layer (s) is cured, characterized in that at least one of the coating materials has a color and / or or effect-imparting aqueous coating material which
  • (A) contains at least one copolymer as a binder, which by radical polymerization of
  • radicals R 1 , R 2 , R 3 and R 4 each independently of one another represent hydrogen atoms or substituted or unsubstituted alkyl, cycloalkyl, alkylcycloalkyl, cycloalkylalkyl, aryl, alkylaryl,
  • Cycloalkylaryl, arylalkyl or arylcycloalkyl radicals are available with the Provided that at least two of the variables R 1 , R 2 , R 3 and R 4 stand for substituted or unsubstituted aryl, arylalkyl or arylcycloalkyl radicals, in particular substituted or unsubstituted aryl radicals;
  • the new coil coating process is referred to below as the "coating process according to the invention".
  • At least one copolymer (A) is used as the binder or one of the binders in the coating material of the invention.
  • the copolymer (A) is prepared by radical polymerization of at least one olefinically unsaturated monomer (a) and at least one olefinically unsaturated monomer (b), which is different from the monomer (a).
  • Suitable monomers (a) are (al) essentially acid-group-free (meth) acrylic acid esters such as (meth) acrylic or alkyl cycloalkyl esters with up to 20 carbon atoms in the alkyl radical, in particular methyl, ethyl, propyl, n-butyl, sec-butyl, tert. Butyl, hexyl, ethylhexyl, stearyl and
  • (Meth) acrylic acid derivatives can be used in minor amounts of higher functional (meth) acrylic or alkyl cycloalkyl esters, such as ethylene glycol, propylene glycol, diethylene glycol, dipropylene glycol,
  • minor amounts of higher-functional monomers are understood to mean those amounts which do not lead to crosslinking or gelling of the copolymers (A).
  • epsilon-caprolactone and these hydroxyalkyl or cycloalkyl esters or olefinically unsaturated alcohols such as allyl alcohol or polyols such as trimethylolpropane mono- or diallyl ether or pentaerythritol mono-, di- or triallyl ether (with regard to these higher-functional monomers (a2) the same applies analogously to the higher-functional monomers (al) what has been said); N, N-dimemylaminoethyl acrylate, N, N-diethylaminoethyl methacrylate,
  • (a3) monomers which carry at least one acid group which can be converted into the corresponding acid anion group per molecule, such as acrylic acid, methacrylic acid, ethacrylic acid, crotonic acid, maleic acid, fumaric acid or itaconic acid; olefinically unsaturated sulfonic or phosphonic acids or their partial esters; or maleic acid mono (meth) acryloyloxyethyl ester, succinic acid mono (meth) acryloyloxyethyl ester or phthalic acid mono (meth) acryloyloxyethyl ester.
  • (a4) Vinyl esters of monocarboxylic acids with 5 to 18 carbon atoms in the molecule which are branched in the alpha position.
  • the branched monocarboxylic acids can be obtained by reacting formic acid or carbon monoxide and water with olefins in the presence of a liquid, strongly acidic catalyst; the olefins can be crack products of paraffinic hydrocarbons, such as mineral oil fractions, and can contain both branched and straight-chain acyclic and / or cycloaliphatic olefins.
  • olefins When such olefins are reacted with formic acid or with carbon monoxide and water, a mixture of carboxylic acids is formed in which the carboxyl groups are predominantly located on a quaternary carbon atom.
  • Other olefinic starting materials are, for example, propylene trimer, propylene tetramer and diisobutylene.
  • the vinyl esters (a4) can, however, also be prepared from the acids in a manner known per se, for example by allowing the acid to react with acetylene. Because of the good availability, vinyl esters of saturated aliphatic monocarboxylic acids having 9 to 11 carbon atoms which are branched on the alpha carbon atom are particularly preferred, but in particular
  • Cyclic and / or acyclic olefins such as ethylene, propylene, but-1-ene, pent-1-ene, hex-1-ene, cyclohexene, cyclopentene, norbones, butadiene, isoprene, cyclopentadiene and / or dicyclopentadiene.
  • (a7) (Meth) acrylic acid amides such as (meth) acrylic acid amide, N-methyl, N, N-dimethyl, N-ethyl, N, N-diethyl, N-propyl, N, N-dipro ⁇ yl, N -Butyl-, N, N-dibutyl-, N-cyclohexyl-, N, N-cyclohexyl-methyl- and or N-methylol-, N, N-dimethylol-, N-methoxymefethyl-, N, N-di (methoxymethyl ) -, N-Efhoxymethyl- and / or N, N-Di (ethoxyethyl) -
  • epoxy groups such as the glycidyl ester of acrylic acid, methacrylic acid, ethacrylic acid, crotonic acid, maleic acid,
  • Fumaric acid and / or itaconic acid are Fumaric acid and / or itaconic acid.
  • vinylaromatic hydrocarbons such as styrene, alpha-alkylstyrenes, in particular alpha-methylstyrene, and or vinyltoluene; Vinylbenzoic acid (all isomers), N, N-diemylarninostyrene (all isomers), alpha-
  • Methyl vinylbenzoic acid (all isomers), N, N-dimethylamino-alpha-methylstyrene (all isomers) and / or p-vinylbenzenesulfonic acid.
  • nitriles such as acrylonitrile and / or memacrylonitrile.
  • vinyl compounds in particular vinyl and / or vinylidene dihalides such as vinyl chloride, vinyl fluoride, vinylidene dichloride or
  • N-vinylamides such as vinyl-N-methylformamide, N-vinylcaprolactam, 1-vinylimidazole or N-vinylpyrrolidone
  • Vinyl ethers such as ethyl vinyl ether, n-propyl vinyl ether, isopropyl vinyl ether, n-
  • (al 2) AUyl compounds, in particular AUyl ethers and esters such as allyl methyl, ethyl, propyl or butyl ether or allyl acetate, propionate or butyrate.
  • (al3) polysiloxane macromonomers which have a number average molecular weight Mn of 1,000 to 40,000 and an average of 0.5 to 2.5 ethylenically unsaturated double bonds per molecule; especially polysiloxane macromonomers that have a number average molecular weight
  • each of the above-mentioned monomers (al) to (al4) can be polymerized alone with the monomer (b). According to the invention, however, it is advantageous to use at least two monomers (a), because in this way the profile of properties of the resulting copolymers (A) varies very widely in a particularly advantageous manner and can be adapted very specifically to the particular intended use of the coating material.
  • functional groups can be incorporated into the copolymers (A) in this way, making the copolymers (A) hydrophilic so that they can be dispersed or dissolved in aqueous media. They can also be functional Groups are incorporated which can undergo thermal crosslinking reactions with the complementary functional groups of the crosslinking agents used, if any, described below.
  • functional groups can be grown which give the copolymer (A) self-crosslinking properties, such as N-methylol or N-alkoxymethyl groups.
  • the radicals R 1 , R 2 , R 3 and R 4 each independently represent hydrogen atoms or substituted or unsubstituted alkyl, cycloalkyl, alkylcycloalkyl, cycloalkylalkyl, aryl, alkylaryl, cycloalkylaryl arylalkyl or arylcycloalkyl radicals, with the proviso that at least two of the variables R 1 , R 2 , R 3 and R 4 stand for substituted or unsubstituted aryl, arylalkyl or arylcycloalkyl radicals, in particular substituted or unsubstituted aryl radicals.
  • alkyl radicals examples include methyl, ethyl, propyl, isopropyl, n-butyl, iso-butyl, tert-butyl, amyl, hexyl or 2-ethylhexyl.
  • Suitable cycloalkyl radicals are cyclobutyl, cyclopentyl or cyclohexyl.
  • alkylcycloalkyl radicals are methylenecyclohexane, ethylenecyclohexane or propane-1,3-diylcyclohexane.
  • suitable cycloalkylalkyl radicals are 2-, 3- or 4-methyl-, ethyl-, propyl- or butylcyclohex-1-yl.
  • Suitable aryl radicals are phenyl, naphthyl or biphenylyl, preferably phenyl and naphthyl and in particular phenyl.
  • alkylaryl radicals examples include benzyl or ethylene or propane-1,3-diyl-benzene.
  • Suitable cycloalkylaryl radicals are 2-, 3-, or 4-phenylcyclohex-l-yl.
  • Suitable arylalkyl radicals are 2-, 3- or 4-methyl-, ethyl-, propyl- or butylphen-1-yl.
  • Suitable arylcycloalkyl radicals are 2-, 3- or 4-cyclohexylphen-l-yl.
  • radicals R 1 , R 2 , R 3 and R 4 described above can be substituted.
  • electron-withdrawing or electron-donating atoms or organic residues can be used.
  • Suitable substitutes are halogen atoms, in particular chlorine and fluorine, nitrile groups, nitro groups, partially or completely halogenated, in particular chlorinated and / or fluorinated, alkyl, cycloalkyl, alkylcycloalkyl, cycloalkylalkyl, aryl, alkylaryl, cycloalkylaryl, arylalkyl and Arylcycloalkyl radicals, including those exemplified above, in particular tert-butyl; Aryloxy, alkyloxy and cycloalkyloxy radicals, in particular phenoxy, naphthoxy, methoxy, ethoxy, propoxy, butyloxy or cyclohexyloxy; Arylthio, alkylthio and cycloalkylthio radicals, in particular phenylthio, naphthylthio, methylthio, ethylthio, propylthio, butylthio
  • Examples of monomers (b) used with particular preference in accordance with the invention are diphenylethylene, dinaphthaleneethylene, eis or trans-stilbene, vinylidene bis (4-N, N-dimemylaminobenzene), vmylidene bis (4-aminobenzene) or vinylidene bis (4- nitrobenzene).
  • the monomers (b) can be used individually or as a mixture of at least two monomers (b).
  • diphenylethylene is of very particular advantage and is therefore used with particular preference in accordance with the invention.
  • the monomers (a) and (b) to be used according to the invention are reacted with one another to give the copolymer (A) in the presence of at least one radical initiator.
  • initiators which can be used are: dialkyl peroxides, such as di-tert-butyl peroxide or dicumyl peroxide; Hydroperoxides, such as cumene hydroperoxide or tert-butyl hydroperoxide; Peresters, such as tert-butyl perbenzoate, tert-butyl perpivalate, tert-butyl per-3,5,5-trimethyl hexanoate or tert-butyl per-2-ethyl hexanoate; Potassium, sodium or ammonium peroxodisulfate; Azodinitriles such as azobisisobutyronitrile; C-C cleavage initiators such as benzpinacol silyl ether; or a combination of a non-
  • Comparatively large amounts of radical initiator are preferably added, the proportion of the initiator in the reaction mixture being based in each case on the total amount of the monomers (a) and the initiator, particularly preferably 0.5 to 50% by weight, very particularly preferably 1 to 20% by weight and in particular 2 to 15% by weight.
  • the weight ratio of initiator to monomers (b) is preferably 4: 1 to 1: 4, particularly preferably 3: 1 to 1: 3 and in particular 2: 1 to 1: 2. Further advantages result if the initiator within the specified limits Excess is used.
  • the radical copolymerization is preferably carried out in the devices mentioned at the outset, in particular stirred tanks or Taylor reactors, the Taylor reactors being designed so that the conditions of the Taylor flow are met over the entire length of the reactor, even if the kinematic viscosity of the reaction medium changes greatly as a result of the copolymerization , in particular increases (cf. DE 198 28 742 A1).
  • the copolymerization is carried out in an aqueous medium.
  • the aqueous medium essentially contains water.
  • the aqueous medium may contain minor amounts of the crosslinking agents, reactive thinners and / or paint additives and / or other dissolved solid, liquid or gaseous organic and / or inorganic, low and / or high molecular weight substances, in particular surface-active substances, described in detail below. provided that these do not negatively influence or even inhibit the copolymerization.
  • the term “minor amount” is understood to mean an amount which does not cancel out the aqueous character of the aqueous medium.
  • the aqueous medium can also be pure water.
  • the copolymerization is preferably carried out in the presence of at least one base.
  • Low molecular weight bases such as sodium hydroxide solution, potassium hydroxide solution, ammonia, diethanolamine, triemanolamine, mono-, di- and triemylamine, and / or dimemylemanolamine, in particular ammonia and / or di- and / or triemanolamine, are particularly preferred.
  • the copolymerization is advantageously carried out at temperatures above room temperature and below the lowest decomposition temperature of the monomers used in each case, a temperature range from 10 to 150 ° C., very particularly preferably 70 to 120 ° C. and in particular 80 to 110 ° C. being chosen.
  • the copolymerization can also be carried out under pressure, preferably under 1.5 to 3,000 bar, particularly preferably 5 to 1,500 and in particular 10 to 1,000 bar.
  • the radical polymerization is preferably carried out in an emulsion, mini-emulsion or micro-emulsion.
  • patent applications and the references DE 196 28 142 A1, DE 196 28 143 A1 or EP 0 401 565 A1 emulsion polymerization and emulsion polymers, editors. P. A. Lovell and Mohamed S. El-Aasser, John Wiley and Sons, Chichester, New York, Weinheim, 1997, pages 700 and following; Mohamed S.
  • the copolymer (A) is not subject to any restrictions with regard to the molecular weight distributions. However, the copolymerization is advantageously carried out in such a way that a molecular weight distribution Mw / Mn measured using gel permeation chromatography using polystyrene as a standard of ⁇ 4, particularly preferably ⁇ 2 and in particular ⁇ 1.5 and in some cases also ⁇ _ 1.3.
  • the molecular weights of the constituents (A) can be controlled within wide limits by the choice of the ratio of monomer (a) to monomer (b) to radical initiator.
  • the content of monomer (b) in particular determines the molecular weight in such a way that the greater the proportion of monomer (b), the lower the molecular weight obtained.
  • the copolymer (A) is generally obtained in the form of a dispersion as a mixture with the aqueous medium. It can be processed further in this form or used as a macroinitiator for the further reaction with at least one further monomer (a) in a second stage (ii).
  • the copolymer (A) resulting in the first stage (i) can, however, also be isolated as a solid and then reacted further.
  • step (ii) is preferably carried out under the usual conditions for free-radical polymerization, suitable solvents and / or reactive diluents being able to be present.
  • Steps (i) and (ii) can be carried out separately from one another both spatially and temporally within the scope of the method according to the invention.
  • steps (i) and (ii) can also be carried out in succession in one reactor.
  • the monomer (b) is first reacted completely or partially with at least one monomer (a) depending on the desired application and the desired properties, after which at least one further monomer (a) is added and polymerized by free radicals.
  • At least two monomers (a) are used from the start, the monomer (b) first reacting with one of the at least two monomers (a) and then the resulting reaction product (A) above a certain molecular weight also with the further monomer (a) responds.
  • the reaction it is possible according to the invention to prepare functionalized copolymers, block or multiblock and gradient copolymers, star-shaped coolers, graft copolymers and branched copolymers (A) on the end groups.
  • the copolymer (A) may contain at least one, preferably at least two, reactive functional groups which can undergo thermal crosslinking reactions with complementary reactive functional groups of the optionally used crosslinking agents described below.
  • the functional groups can be introduced into the copolymer (A) via the monomers (a) or, after their synthesis, can be carried out by polymer-analogous reactions.
  • variable R 5 stands for substituted or unsubstituted alkyl, cycloalkyl, alkylcycloalkyl, cycloalkylalkyl, aryl, alkylaryl, cycloalkylaryl, arylalkyl or
  • arylcycloalkyl stands for identical or different alkyl, cycloalkyl, alkylcycloalkyl or cycloalkylalkyl radicals or are linked to one another to form an aliphatic or heteroaliphatic ring.
  • suitable radicals of this type are those listed above for the radicals R, R, R 3 and R 4 .
  • Copolymer (A) and crosslinking agent (A) and crosslinking agent
  • the selection of the respective complementary groups is based, on the one hand, on the fact that they do not undergo any undesirable reactions during storage and / or that they may not interfere or inhibit any curing with actinic radiation, and, on the other hand, on the temperature range in which the thermal curing takes place should.
  • thermoly sensitive substrates such as plastics
  • hydroxyl groups and isocyanate groups or carboxyl groups and epoxy groups have proven to be advantageous as complementary functional groups, which is why they are preferably used according to the invention in the coating materials according to the invention, which are present as two- or multi-component systems.
  • Special advantages result when the hydroxyl groups are used as functional groups and the isocyanate groups as functional groups.
  • one-component systems are also suitable as coating materials, in which the reactive functional groups of the copolymer (A) are preferably thio, amino, hydroxyl, Carbamate, allophanate, carboxy, and / or (meth) acrylate groups, but especially hydroxyl groups, and the functional groups of the crosslinking agent preferably anhydride, carboxy, epoxy, blocked isocyanate, urethane, methylol, methylol ether, Are siloxane, amino, hydroxy and / or beta-hydroxyalkylamide groups.
  • the reactive functional groups of the copolymer (A) are preferably thio, amino, hydroxyl, Carbamate, allophanate, carboxy, and / or (meth) acrylate groups, but especially hydroxyl groups
  • the functional groups of the crosslinking agent preferably anhydride, carboxy, epoxy, blocked isocyanate, urethane, methylol, methylol ether, Are siloxane, amino, hydroxy and
  • the copolymer (A) or the coating material produced with it can also film without a crosslinking agent and form an excellent color and / or effect-giving deformable coating.
  • the copolymer (A) is physically curing.
  • the physical hardening and the thermal external crosslinking or self-crosslinking are summarized under the generic term “thermal hardening” via the complementary groups described above.
  • the dispersion of the copolymer (A) can be used directly for the preparation of the coating materials (A) according to the invention. In some cases, however, it may be advantageous to obtain the copolymer (A) from the dispersion, for example by freeze-drying, and to store it until the coating material according to the invention is produced. This has the advantage that the freeze-dried solid copolymer (A) is comparatively stable to microbial degradation.
  • the proportion of the copolymer (A) to be used according to the invention in the coating material can vary very widely.
  • the proportion is advantageously with regard to the pigment or pigment + filler / binder ratio to be adjusted according to the invention (B): (A) 10: 1 to 1: 300, preferably 9: 1 to 1: 280, preferably 8: 1 to 1: 260, particularly preferably 7: 1 to 1: 240, very particularly preferably 6: 1 to 1: 220 and in particular 5: 1 to 1: 200 preferably at 0.33 to 91, preferably 0.35 to 90, particularly preferably 0.38 to 88 , 8, very particularly preferably 0.41 to 87.5, in particular 0.45 to 85.7 and especially 0.5 to 83.4, in each case based on the solid of the coating material of the invention.
  • the coating material of the invention may further contain at least one conventional and known binder with at least one reactive functional group.
  • This conventional and known binder differs materially from the copolymer (A).
  • suitable customary and known binders are linear and / or branched and / or block-like, comb-like and / or randomly constructed poly (meth) acrylates or acrylate copolymers, polyesters, alkyds, aminoplast resins, polyurethanes, acrylated polyurethanes, acrylated polyesters, polylactones, polycarbonates, polyethers , Epoxy resin-A min adducts, (meth) acrylate diols, partially saponified polyvinyl esters or polyureas, which contain said reactive functional groups. If they are used, their proportion of the coating material of the invention can vary very widely, the optimum proportion resulting from the requirements of the individual case.
  • the coating material according to the invention contains at least one color and / or effect, in particular at least one effect, pigment (B).
  • effect pigments reference is made to Römpp Lexikon Lacke und Druckmaschine, Georg Thieme Verlag, 1998, pages 176, "Effect Pigments", and pages 380 and 381 "Metalloxid-Mimmer-Pigments” to "Metallpigmente”.
  • Effect pigments (B) metal flake pigments such as' umbronzen commercial Alumim, chromated according to DE-A-36 36 183
  • Metal effect pigments, in particular aluminum effect pigments are particularly preferably used.
  • the effect pigment (B) can have a broad or a narrow particle size distribution or particle size distribution.
  • the term “broad grain size distribution” indicates that the effect pigment (B) in question has a comparatively large amount of fine grain, ie pigment particles with a grain size in the range from 1 to 10 ⁇ m, and a comparatively large amount of coarse grain with a grain size in the range from 70 to 90 ⁇ m, resulting in a particularly flat slope of the cumulative grain distribution curve.
  • the effect pigments (B) can also be leaf-effect pigments with a broad or narrow particle size distribution.
  • Leafing pigments are pigments that float in layers of pigmented coating materials. According to DIN 55 945 (12/1988), this denotes the accumulation of pigments on the surface of a coating material (cf. Römpp Lexikon Lacke und Druckmaschine, Georg Thieme Verlag, 1998, page 351, "Leafing-Pigments”). They can also be coated with optically transparent, thermoplastic oligomers and polymers. Oligomers are understood to mean resins which contain at least 2 to 15 monomer units in their molecule. Polymers are understood to mean resins which contain at least 10 monomer units in their molecule. In addition to these terms, reference is made to Römpp Lexikon Lacke und Druckmaschine, Georg Thieme Verlag, Stuttgart, New York, 1998, »Oligomere «, page 425.
  • Suitable oligomers and polymers are linear and / or branched and / or block-like, comb-like and / or randomly structured polyaddition resins, polycondensation resins and / or (co) polymers of ethylenically unsaturated monomers.
  • suitable (co) polymers are (meth) acrylate (co) polymers and / or polystyrene, polyvinyl esters, polyvinyl ethers, polyvinyl halides, polyvinylamides, polyacrylonitrile polyethylenes, polypropylenes, polybutylenes, polyisoprenes and / or their copolymers.
  • suitable polyaddition resins or polycondensation resins are polyesters, alkyds, polylactones, polycarbonates, polyethers, epoxy-resin-amine adducts, polyurethanes and or polyureas.
  • effect pigments (B) can be made hydrophilic. This is preferably carried out by pasting with a nonionic surfactant (cf. Römpp Lexikon Lacke und Druckmaschine, Georg Thieme Verlag, 1998, page 410, "Nonionic surfactants”).
  • a nonionic surfactant cf. Römpp Lexikon Lacke und Druckmaschine, Georg Thieme Verlag, 1998, page 410, "Nonionic surfactants”
  • the coloring pigments (B) can consist of inorganic or organic
  • the coating materials according to the invention therefore ensure on account of this large number of suitable coloring pigments (B) a universal range of use and enables the realization of a multitude of particularly beautiful colors and optical effects.
  • suitable inorganic color pigments (B) are titanium dioxide, 5 iron oxides and carbon black.
  • suitable organic coloring pigments (B) are thioindigo pigments, indanthrene blue, irgalith blue, heliogen blue, irgazin blue, palomar blue, cromophthal red, hostaperm pink, irgazin orange, sicotrans yellow, sicotane yellow, Hostaperm Yellow, Paliotan Yellow, and Heliogen Green.
  • the content of the pigments (B) to be used according to the invention in the coating materials according to the invention can vary very widely. It is preferably based on the above, according to the invention
  • the content is preferably 9 to 99.67, preferably 10 to 99.65, particularly preferably 11.2 to 99.62, very particularly preferably 12.5 to 99.59, in particular 14.3 to 99.55 and especially 16 , 6 to 99.5% by weight, in each case based on the solid of the coating material according to the invention. 5
  • the coating material of the invention may also contain at least one filler.
  • suitable organic and inorganic fillers are chalk, calcium sulfates, barium sulfate, silicates such as talc or kaolin, silicas, oxides such as aluminum hydroxide or magnesium hydroxide or organic fillers such as Textile fibers, cellulose bevels, polyethylene fibers, polyacrylonitrile powder, polyamide powder or wood flour.
  • suitable fillers are known from German patent application DE 196 06 706 A1, column 8, lines 30 to 64. They are preferably used in the amounts indicated therein, the pigment + filler / binder ratio to be used according to the invention given above preferably being observed.
  • the pigments (B) and fillers can also be in ultra-fine, non-opaque form. They can also be incorporated into the coating materials using pigment pastes, the copolymers (A) described above being particularly suitable as rubbing resins.
  • the coating materials according to the invention may further contain at least one crosslinking agent which contains at least two, preferably at least three, reactive functional groups which can react with the complementary reactive functional groups in the copolymers (A).
  • Beta-Hydroxyalkylarm ⁇ ewie, N, N ⁇ N'-Tefra s (2-hy ⁇ -oxyemyl) adipamide or N, N, N ', N'-TefraMs (2-hydroxypropyl) -adipamide.
  • the coating material in question according to the invention should be a one-component system or a two- or multi-component system.
  • unblocked polyisocanates are used, which are stored separately from the other constituents of the coating material according to the invention until they are used. If they are used, they are contained in the coating material according to the invention in customary and known amounts, as stated in the above-mentioned patents and patent applications.
  • the coating material of the invention is to be curable not only thermally but also with actinic radiation, in particular UV radiation and / or electron radiation (dual cure), it contains at least one constituent which can be activated with actinic radiation.
  • Suitable activatable constituents are in principle all oligomeric and polymeric compounds curable with actinic radiation, in particular UV radiation and / or electron radiation, as are usually used in the field of UV-curable or electronically curable coating materials.
  • Radiation-curable binders are advantageously used as activatable constituents.
  • suitable radiation-curable binders are (meth) acrylic-functional (meth) acrylic copolymers, polyether acrylates,
  • Polyester acrylates unsaturated polyesters, epoxy acrylates, urethane acrylates, amino acrylates, melamine acrylates, silicone acrylates, isocyanato acrylates and the corresponding methacrylates. It is preferred to use binders which are free from aromatic structural units. Urethane (meth) acrylates and / or polyester (meth) acrylates are therefore preferably used, particularly preferably aliphatic urethane acrylates.
  • the coating material of the invention can also contain conventional and known additives or paint additives in effective amounts. It is essential that they do not inhibit or completely prevent the crosslinking reactions.
  • suitable additives are reactive diluents curable thermally and / or with actinic radiation, low-boiling organic solvents and high-boiling organic solvents ("long solvents"), UV absorbers, light stabilizers, radical scavengers, thermolabile radical initiators, photoinitiators and coinitiators, catalysts for thermal crosslinking, deaerating agents, slip additives, polymerization inhibitors, defoamers, emulsifiers, wetting and diperging agents, adhesion promoters, coupling agents Leveling agents, film-forming aids, rheology-controlling additives (thickeners), flame retardants, siccatives, drying agents, skin-preventing agents, corrosion inhibitors, waxes, matting agents or precursors of organically modified ceramic materials.
  • thermally curable reactive diluents are positionally isomeric diethyloctanediols or hyperbranched compounds containing hydroxyl groups or dendrimers, as are described in the patent applications DE 198 09 643 A1, DE 198 40 605 A1 or DE 198 05 421 A1.
  • Suitable reactive diluents curable with actinic radiation are those described in Römpp Lexikon Lacke und Druckmaschine, Georg Thieme Verlag, Stuttgart, New York, 1998, on page 491 under the keyword “reactive diluents”.
  • Suitable low-boiling organic solvents (D) and high-boiling organic solvents (“long solvents”) are ketones such as methyl ethyl ketone or methyl isobutyl ketone, diols such as butyl glycol, esters such as ethyl acetate, butyl acetate or butyl glycol acetate, ethers such as dibutyl ether or ethylene glycol, diethylene glycol, propylene Dipropylene glycol, butylene glycol or dibutylene glycol dimethyl, diethyl or dibutyl ether, N-methylpyrrolidone or xylenes or mixtures of aromatic hydrocarbons such as Solvenmaphtha® or Solvesso®.
  • ketones such as methyl ethyl ketone or methyl isobutyl ketone
  • diols such as butyl glycol
  • esters such as ethyl acetate, butyl a
  • thermolabile free radical initiators examples include organic peroxides, organic azo compounds or CC-cleaving initiators such as Dialkyl peroxides, peroxocarboxylic acids, peroxodicarbonates, peroxide esters, hydroperoxides, ketone peroxides, azodinitriles or benzpinacol silyl ethers.
  • Suitable catalysts for the crosslinking are dibutyltin dilaurate, lithium decanoate or zinc octoate.
  • Suitable deaerating agents are diazadicycloundecane or benzoin.
  • emulsifiers examples include nonionic emulsifiers, such as alkoxylated alkanols and polyols, phenols and alkylphenols, or anionic emulsifiers, such as alkali metal salts or Ammom 'umsalze of alkanecarboxylic acids, alkanesulfonic acids, and sulphonic acids of alkoxylated alkanols and polyols, phenols and alkylphenols.
  • nonionic emulsifiers such as alkoxylated alkanols and polyols, phenols and alkylphenols
  • anionic emulsifiers such as alkali metal salts or Ammom 'umsalze of alkanecarboxylic acids, alkanesulfonic acids, and sulphonic acids of alkoxylated alkanols and polyols, phenols and alkylphenols.
  • Suitable wetting agents are siloxanes, fluorine-containing compounds, carboxylic acid half-esters, phosphoric acid esters, polyacrylic acids and their copolymers or polyurethanes.
  • An example of a suitable adhesion promoter is tricyclodecanedimethanol.
  • Suitable film-forming aids are cellulose derivatives such as cellulose acetobutyrate (CAB).
  • CAB cellulose acetobutyrate
  • inorganic layered silicates such as Aluminum-magnesium-silicates, sodium-magnesium and
  • Montmorillonite type sodium magnesium fluorine lithium layered silicates Silicas such as aerosils; or synthetic polymers with ionic and or associative groups such as polyvinyl alcohol, poly (meth) acrylamide, poly (meth) acrylic acid, polyvinyl pyrrolidone, styrene-maleic anhydride or ethylene-maleic anhydride copolymers and their derivatives or hydrophobically modified ethoxylated urethanes or polyacrylates;
  • Magnesium stearate is an example of a suitable matting agent.
  • Suitable precursors for organically modified ceramic materials are hydrolyzable organometallic compounds, in particular of silicon and aluminum.
  • the production of the coating material according to the invention has no peculiarities, but was carried out with the aid of the customary and known devices and methods for the production of aqueous paints, with customary and known mixing units such as stirred kettles, dissolvers, in-line dissolvers, gear rim dispersers, agitator mills or Extruder can be used.
  • customary and known mixing units such as stirred kettles, dissolvers, in-line dissolvers, gear rim dispersers, agitator mills or Extruder can be used.
  • the coating material of the invention provides the invention
  • Coatings that were easily deformable This means that the coatings are not damaged or destroyed under mechanical loads.
  • the coating material of the invention can therefore with Advantage to optically excellent coloring and / or effect paint films and paint films are processed, which can be easily laminated to three-dimensional objects due to their excellent deformability. However, they can also be laminated onto deformable substrates. The resulting laminates according to the invention are then machined again.
  • Suitable deformable substrates preferably consist of metal, plastics, textiles or leather or of composite materials of these substances.
  • the lacquer films and lacquer foils are produced by applying the coating material according to the invention to at least one side of a belt, which consists of the materials mentioned above, and hardening the resulting layer.
  • the resulting lacquer films and lacquer films can then be removed from the belt and, as described above, processed further to form the laminates according to the invention.
  • the coatings according to the invention can also remain on the belt, which is why the laminate according to the invention results directly after the coil coating.
  • coating materials according to the invention are preferably processed by the coating method according to the invention.
  • a particularly preferred embodiment of the treatment process according to the invention is based on a metal strip which is cleaned, degreased, passivated, chemically treated, rinsed and dried in the customary and known manner and, if appropriate, on one or two sides with at least one lacquer layer or a primer or at least one single-layer coating. or multi-layer paint.
  • All metals from which tapes can be formed that are able to withstand the mechanical, chemical and thermal stresses of the tape coating are suitable.
  • Metal strips based on aluminum or iron are particularly suitable. In the case of iron, cold-rolled steels, electrolytically galvanized steels, hot-dip galvanized steels or stainless steels are particularly suitable. The strips are preferably 200 ⁇ m to 2 mm thick.
  • the metal strip passes through a coil coating system, such as that e.g. in Römpp Lexikon Lacke und Drackmaschine, Georg Thieme Verlag, Stuttgart, New York, 1998, page 55, "coil coating", or in the German patent application DE 196 32426 A 1, at a speed which is the application and curing properties of the The speed can therefore vary very widely from coating process to coating process, preferably from 10 to 150, preferably from 12 to 120, particularly preferably from 14 to 100, very particularly preferably from 16 to 80 and in particular from 20 to 70 m / in.
  • roller coating is particularly advantageous and is therefore preferably used according to the invention.
  • Each roller coating application step can be carried out with several rollers. Preferably two to four and in particular two rollers are used.
  • the rotating pick-up roller When roller painting, the rotating pick-up roller is immersed in a supply and thus takes over the coating material to be applied according to the invention. This is transferred from the pick-up roller directly or via at least one transfer roller to the rotating application roller. From this, the coating material of the invention is transferred to the belt by stripping in the same direction or in opposite directions.
  • the coating material of the invention can also be pumped directly into a nip between two rollers, which is also referred to by the experts as a NIP feed.
  • the opposite wiping or the reverse roller coating method is advantageous and is therefore used with preference.
  • the circulation speeds of the take-up roller and the application roller can vary very greatly from coating process to coating process.
  • the application roller has a rotational speed which is 110 to 125% of the belt speed
  • the take-up roller has a rotational speed which is 20 to 40% of the belt speed.
  • the coating materials according to the invention are preferably applied in a wet layer thickness such that, after the applied layers have hardened, coatings according to the invention of a dry layer thickness of 5 to 100, preferably 6 to 80, particularly preferably 8 to 70, very particularly preferably 10 to 60 and in particular 12 to 50 ⁇ m result ,
  • the application methods described above can be used with the other lacquers that may be used, unless they are powder lacquers in which the application methods described in German patent application DE 196 32426 A1 have to be used.
  • lacquers examples include customary and known pigmented and unpigmented lacquers such as primers based on polyester and / or epoxy, electro-dipping lacquers, fillers and / or clear lacquers.
  • coatings produced from this are primer coatings, electro-dip coating, filler coating or clear coating.
  • At least one coating material according to the invention is preferred.
  • Layer (s) are cured, which also results in at least one coating according to the invention.
  • the resulting coating according to the invention can remain on the belt, which results directly in the laminate according to the invention.
  • the coating according to the invention can also be removed from the belt, which results in the lacquer films and foils according to the invention.
  • the liability can be guaranteed by suitable, customary and known non-stick layers on the tape.
  • the thermal curing is preferably implemented by a predetermined temperature program which is adapted to the drying speed, the melting range and, if appropriate, the temperature range of the curing of the coating materials according to the invention used in each case. These parameters in turn are primarily dependent on the material composition of the respective coating materials according to the invention.
  • the temperature program can therefore vary very widely from coating material according to the invention to coating material according to the invention, but it can easily be derived by a person skilled in the art on the basis of the known relationships between material composition and the parameters mentioned.
  • the heating can be carried out by convection heat transfer, irradiation with near or far infrared and / or in the case of bands based on iron electrical induction.
  • the maximum object temperature is preferably 250 ° C.
  • the heating time i.e. the duration of the thermal curing varies depending on the coating material used according to the invention. It is preferably 10 s to 2 min.
  • convection ovens with a length of 30 to 10 50, in particular 35 to 45 m, are required.
  • the thermal curing of the coating materials of the invention can also be supported by irradiation with actinic radiation.
  • the curing can, however, also be carried out using actmatic radiation alone, as is described, for example, in German patent application DE 198 35 206 A1.
  • actinic radiation 20 is understood to mean electromagnetic radiation, such as near infrared (NIR), visible light, UV radiation or X-rays, in particular UV radiation, and corpuscular radiation such as electron beams.
  • NIR near infrared
  • UV radiation visible light
  • UV radiation UV radiation
  • X-rays UV radiation
  • corpuscular radiation such as electron beams.
  • the usual and known radiation sources and optical auxiliary measures are used for curing with actinic radiation.
  • suitable radiation sources are flash lamps from VISIT, high-pressure or low-pressure mercury vapor lamps, which may be doped with lead in order to open a window up to 405 nm, or electron beam sources.
  • flash lamps from VISIT high-pressure or low-pressure mercury vapor lamps, which may be doped with lead in order to open a window up to 405 nm, or electron beam sources.
  • Their arrangement is known in principle and can be adapted to the conditions of the workpiece and the process parameters.
  • coated strips After the coated strips have been produced by the process according to the invention, they can be wound into coated coils and then processed further at another location; however, they can also be processed directly from the coil coating. They can be laminated with plastics or provided with removable protective films. After being crushed into parts of a suitable size, they can be shaped become. Examples of suitable shaping processing methods are pressing and deep drawing.
  • the resulting laminates according to the invention and the molded parts according to the invention produced therefrom are scratch-resistant, corrosion-stable, weather-resistant and chemical-stable and have an excellent optical appearance
  • Automotive engineering for example for the production of body parts and bodies, commercial vehicle bodies and cladding for caravans, in
  • Household appliance area for example for the manufacture of washing machines
  • Dishwashers dryers, refrigerators, freezers or
  • the first and second feed were metered in within one hour.
  • the third feed was metered in within 1.25 hours.
  • the resulting reaction mixture was kept at 80 ° C. for four hours and then cooled to below 40 ° C. and filtered through a 100 ⁇ m GAF bag.
  • the resulting dispersion had a solids content of 32 to 34% by weight (1 hour, 130 ° C.) and a free monomer content of less than 0.2% by weight (determined by gas chromatography).
  • the dispersion (A) was used for the production of a block copolymer (A).
  • the resulting dispersion was then cooled below 40 ° C. and filtered through a 50 ⁇ m GAF bag.
  • the dispersion (A) had a solids content of 41 to 42% by weight (1 hour, 130 ° C.) and a free monomer content of less than 0.2% by weight (determined by gas chromatography). example 1
  • dispersion (A) according to Preparation Example 2 100 parts by weight of dispersion (A) according to Preparation Example 2 were mixed with 10 parts by weight of a commercially available aluminum effect pigment (Stapa Hydrolux from Eckart) and 1 part by weight of Additol® XW395 (commercially available wetting agent).
  • the coating material of the invention was adjusted to a spray viscosity of 55 mPas with water.
  • the coating material was taken up from a storage tank through a take-up roller which rotated at a circulation speed of 13.5 m / min.
  • the coating material was transferred to the application roller at a narrow roller nip. This rotated at a rotational speed of 52 m / min and transferred the coating material in the opposite direction to the aluminum strip.
  • the wet film thickness of the resulting basecoat film according to the invention was chosen so that a dry film thickness of 12 ⁇ m resulted after curing.
  • the band coated with the basecoat film was fed to a 40 m long convection oven, in which the band was heated up to a maximum object temperature of 250 ° C., so that the basecoat film hardened. The entire hardening process took almost 1 min.
  • the effect-imparting basecoat according to the invention produced in a method according to the invention, was smooth and shiny and had an excellent metallic effect. It withstood more than 100 double strokes with a cotton ball soaked in methyl ethyl ketone without damage.
  • the flexural strength cf. Römpp Lexikon Lacke und Druckmaschine, Georg Thieme Verlag, 1998, page 73, "Flexural Strength" and the adhesive strength were very good (T-Bendtest: T0; Tapetest: T0) ) gave good ductility.
  • the aluminum strip coated with the effect-giving basecoat according to the invention could be easily formed into molded parts such as window frames, lamp parts or automobile body parts by deep drawing.

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EP01960297A 2000-06-16 2001-06-12 Farb- und/oder effektgebende wässrige beschichtungsstoffe und ihre verwendung zur herstellung farb- und/oder effektgebender, verformbarer laminate Withdrawn EP1290096A1 (de)

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DE10029802A DE10029802A1 (de) 2000-06-16 2000-06-16 Farb- und/oder effektgebende wäßrige Beschichtungsstoffe und ihre Verwendung zur Herstellung farb- und/oder effektgebender, verformbarer Laminate
PCT/EP2001/006616 WO2001096484A1 (de) 2000-06-16 2001-06-12 Farb- und/oder effektgebende wässrige beschichtungsstoffe und ihre verwendung zur herstellung farb- und/oder effektgebender, verformbarer laminate

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US6706333B2 (en) 2004-03-16
CN1436222A (zh) 2003-08-13
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CA2408841A1 (en) 2002-11-12
KR20030011897A (ko) 2003-02-11
BR0111578A (pt) 2003-03-18
DE10029802A1 (de) 2002-01-03
AU2001281826A1 (en) 2001-12-24
JP2004503654A (ja) 2004-02-05
US20030162888A1 (en) 2003-08-28
PL359722A1 (en) 2004-09-06

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