EP1601727A1 - Beschichtungsmittel zur herstellung von umformbaren kratzfestbeschichtungen mit schmutzabweisender wirkung, kratzfeste umformbare schmutzabweisende formkörper sowie verfahren zu deren herste llung - Google Patents
Beschichtungsmittel zur herstellung von umformbaren kratzfestbeschichtungen mit schmutzabweisender wirkung, kratzfeste umformbare schmutzabweisende formkörper sowie verfahren zu deren herste llungInfo
- Publication number
- EP1601727A1 EP1601727A1 EP03758013A EP03758013A EP1601727A1 EP 1601727 A1 EP1601727 A1 EP 1601727A1 EP 03758013 A EP03758013 A EP 03758013A EP 03758013 A EP03758013 A EP 03758013A EP 1601727 A1 EP1601727 A1 EP 1601727A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- meth
- weight
- shaped body
- acrylate
- acrylates
- 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- Withdrawn
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
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- 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
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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- 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
- C09D181/00—Coating compositions based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur, with or without nitrogen, oxygen, or carbon only; Coating compositions based on polysulfones; Coating compositions based on derivatives of such polymers
- C09D181/04—Polysulfides
Definitions
- the present invention relates to coating compositions for the production of formable scratch-resistant coatings with a dirt-repellent effect, moldings coated with these coating compositions with a scratch-resistant, formable and dirt-repellent coating, and to processes for the production of the coated moldings.
- thermoplastically deformable plastics do not achieve the scratch resistance of many metals or mineral glasses.
- the susceptibility to scratches with transparent plastics is particularly disadvantageous, since the objects in question very quickly become unsightly.
- Scratch-resistant coatings for plastics are known per se.
- the publication DE 195 07 174 describes UV-curing, scratch-resistant coatings for plastics which have a particularly high UV stability. These coatings already show a good range of properties.
- plastic moldings, including scratch-resistant coatings are used primarily in the form of panels in building exterior areas, such as for noise barriers or as glazing for facades, bus stops, advertising spaces, advertising pillars, so-called "mobile urban", wherever are exposed to both natural pollution and vandalism-related contamination such as graffiti smearing. The cleaning of such surfaces is very complex since the surface is often attacked as a result.
- fluorine-containing acrylates are often added to the coating compositions. Such coating compositions are described, for example, in DE 43 19 199.
- a disadvantage of known coating agents is that the coatings produced therefrom on plastic bodies form cracks during thermal forming, the coating on the formed body becoming milky, cloudy and unsightly.
- coated, formable construction parts can be made for much broader customer groups than pre-formed plates specially produced for a customer.
- plastic bodies with a scratch-resistant coating according to the invention have a high durability, in particular a high resistance to UV radiation or weathering.
- Another object of the present invention was to provide coating compositions with an anti-graffiti effect which do not adversely change the properties of the substrate.
- the spray paints used to produce graffiti should no longer or only very weakly on the plastic body due to an anti-graffiti finish according to the invention. stick, whereby sprayed substrates should be easy to clean, so that e.g. Water, rags, surfactant, high-pressure cleaners, mild solvents ("easy-to-clean”) are sufficient.
- the invention was based on the object of providing scratch-resistant, dirt-repellent molded articles which can be produced in a particularly simple manner.
- substrates which can be obtained by extrusion, injection molding and by casting processes should be able to be used for the production of the moldings.
- Another object of the present invention was to provide scratch-resistant, formable, dirt-repellent molded articles which have excellent mechanical properties. This property is particularly important for applications in which the plastic body is said to have high stability against impact. In addition, the moldings should have particularly good optical properties.
- Another object of the present invention was to provide scratch-resistant, formable, dirt-repellent molded articles which can be easily adapted to the requirements in a larger form.
- claims 12-21 provide a solution to the underlying problems.
- A1) 1 to 10 parts by weight of at least one sulfur compound containing at least 3 thiol groups and A2) 90 to 99 parts by weight of alkyl (meth) acrylates,
- the scratch-resistant coatings obtained with the coating compositions according to the invention have a particularly high adhesion to the plastic substrates, and this property is not impaired by weathering.
- the coated moldings show a high resistance to UV radiation.
- plastic bodies coated according to the invention have a particularly low surface energy. As a result, the moldings provided can be cleaned particularly easily.
- Scratch-resistant molded articles of the present invention can be easily adapted to certain requirements.
- the size and shape of the plastic body can be varied over a wide range without the formability being impaired thereby.
- the present invention also provides moldings with excellent optical properties.
- the scratch-resistant, formable, dirt-repellent molded articles of the present invention have good mechanical properties.
- the coating compositions according to the invention for the production of formable scratch-resistant coatings with a dirt-repellent effect comprise 1 to 30% by weight, preferably 2 to 25% by weight, based on the weight of the coating composition, of a prepolymer obtainable by free-radical polymerization of a mixture comprising
- A1) 1-10 parts by weight, preferably 2-6 parts by weight of at least one sulfur compound containing at least three thiol groups and
- A2) 90-99 parts by weight, preferably 94-98 parts by weight of alkyl (meth) acrylates.
- Sulfur compounds with more than two thiol groups in the molecule are known, for example, from US Pat. No. 4,521,567.
- sulfur compounds with at least three, preferably four thiol groups in the molecule are used.
- the sulfur regulators preferably contain at least 3, preferably at least 6, carbon atoms in the molecule, but not more than 40.
- the presence of one or preferably more ⁇ -mercapto-carboxylic acid ester groups in the molecule is advantageous, preferably starting from polyols, such as glycerol or pentaerythritol.
- Suitable sulfur regulators with more than three thiol groups are, for example, 1, 2,6-hexanetriol trithioglycolate, trimethylolethane trithioglycolate, pentaerythritol tetrakis (2-mercaptoacetate), trimethylolethane tri- (3-mercaptopropionate), pentaerythritol tetrakis (3- mercaptopropionate), trimethylolpropane trithioglycolate, trimethylolpropane tri (3-mercaptopropionate), tetrakis (3-mercaptopropionate) pentaerytritol, 1, 1, 1-propanetriyl-tris (mercaptoacetate), 1, 1, 1-propanetriyl-tris- (3-mercaptopropionate ), Dipentaerythritol hexa- (3-mercatopropionate). Pentaerythritol tetrakis (2-mercap
- the acrylic (meth) acrylates which can be used according to the invention for the preparation of the prepolymer are known per se, the expression (meth) acrylate standing for acrylates, methacrylates and for mixtures of the two.
- the alkyl (meth) acrylates preferably have 1-20, in particular 1-8 carbon atoms.
- Ci to Cs alkyl esters of acrylic acid or methacrylic acid are methyl acrylate, ethyl acrylate, propyl acrylate, isopropyl acrylate, n-butyl acrylate, isobutyl acrylate, n-hexyl acrylate and 2-ethylhexyl acrylate, methyl methacrylate, ethyl methacrylate and n-propyl methacrylate.
- Preferred monomers are methyl methacrylate and n-butyl acrylate.
- alkyl (meth) acrylates which comprise at least 10% by weight of methyl (meth) acrylate and / or ethyl acrylate and at least 2% by weight of alkyl (meth) acrylates having 3 to 8 carbon atoms are preferably used to prepare the prepolymer.
- Methyl methacrylate fractions from 50 to 99% by weight, butyl methacrylate fractions from 5 to 40% by weight and acrylate fractions from 2 to 50% by weight.
- the ratios of regulator to monomers can be varied in the preparation of the thickening polymers.
- the polymerization of regulators and monomers can be carried out in a manner known per se as bulk, suspension or pearl, solution or emulsion polymerization using free-radical initiators become.
- DE 33 29 765 C2 / US 4,521,567 can be used to derive or derive a suitable process for peripolymerization (polymerization step stage A).
- the radical initiators are e.g. peroxidic or azo compounds in question (US-PS 2471 959).
- peroxidic or azo compounds in question (US-PS 2471 959).
- organic peroxides such as dibenzoyl peroxide, lauryl peroxide or peresters such as tert-butyl-per-2-ethylhexanoate, as well as azo compounds such as azobisisobutyronitrile.
- the thickener polymers obtained can have molecular weights of approximately 2000 to 50,000, depending on the polymerization process and proportion of regulator.
- the molecular weight can be determined in particular by viscometry, the prepolymer A) preferably measuring a viscosity number in accordance with DIN ISO 1628-6 in the range from 8 to 15 ml / g, in particular 9 to 13 ml / g and particularly preferably 10 to 12 ml / g in CHCI 3 at 20 ° C.
- the coating compositions of the present invention contain 0.2-10% by weight, preferably 0.3-5.0% by weight and very particularly preferably 0.5-2% by weight, based on the total weight of the Coating agent, fluoroalkyl (meth) acrylates with 3 to 30 preferably 8 to 25 and particularly preferably 10 to 20 carbon atoms in the alcohol radical, which comprises 6 to 61, preferably 7 to 51 and particularly preferably 9 to 41 fluorine atoms.
- the alcohol radical of the fluoroalkyl (meth) acrylate can comprise further substituents in addition to the fluorine atoms. These include in particular ester groups, amide groups, amine groups, nitro groups and halogen atoms, it being possible for this alcohol radical to be either linear or branched.
- a fluoroalkyl (meth) acrylate according to formula I is used
- a fluoroalkyl (meth) acrylate according to formula II is used
- radical Ri is a hydrogen atom or a methyl radical and n is an integer in the range from 2 to 10, preferably 3 to 8, particularly preferably 3 to 5.
- the fluoroalkyl (meth) acrylates which are present in component B) in the coating compositions of the invention include, among others
- the fluoroalkyl (meth) acrylates are known compounds, and the fluoroalkyl (meth) acrylates can be used individually or as a mixture.
- crosslinking monomers according to the invention are added to the coating agent. These have at least two polymerizable units, for example vinyl groups per molecule (cf. Brandrup-Immergut polymer handbook). According to the invention, these are used in amounts of 20-80% by weight, preferably 50-70% by weight, based on the total weight of the coating composition.
- the diesters and higher esters of acrylic or methacrylic acid of polyhydric alcohols such as glycol, glycerol, trimethylolethane, trimethylolpropane, pentaerythritol, diglycerol, dimethylolpropane, ditrimethylolethane, dipentaerythritol, trimethylhexanediol-1, 6, cyclohexanediol-1,4 are mentioned.
- crosslinking monomers examples include Ethylene glycol diacrylate, ethylene glycol dimethacrylate, propylene glycol diacrylate, propylene glycol dimethacrylate, 1, 3-butanediol diacrylate, 1, 3-butanediol dimethacrylate, neopentyl glycol diacrylate, neopentyl glycol dithacrylate, 2,6-diethylene-4-methacrylate, 2,6-diethylene-4 dimethacrylate, tetraethylene glycol diacrylate, tetraethylene glycol dimethacrylate, pentanediol diacrylate, pentanediol dimethacrylate, hexanediol diacrylate, hexanediol dimethacrylate, trimethylolpropane tri (meth) acrylate, ditrimethylolpropane tetraacrylate, ditrimethylolprophramate tetraacrylate,
- the multifunctional acrylates or methacrylates can also be oligomers or polymers, which may also contain other functional groups. Urethane or triacrylates or corresponding ester acrylates may be mentioned in particular.
- Component D
- Known initiators which are added to the coating composition in an amount of 0.01-10% by weight, preferably 1-3% by weight, based on the total weight of the coating composition, are used for the polymerization or curing of the coating composition according to the invention.
- the preferred initiators include the azo initiators well known in the art, such as AIBN and 1,1-azobiscyclohexane carbonitrile, and peroxy compounds, such as methyl ethyl ketone peroxide, acetylacetone peroxide, dilauryl peroxide, tert-butyl per-2-ethylhexanoate, ketone peroxide, methyl isobutyl ketone peroxide, and tert-butyl peroxybenzoate, tert-butyl peroxyisopropyl carbonate, 2,5-bis (2-ethylhexanoyl-peroxy) -2,5-dimethylhexane, tert-butyl peroxy-2-ethylhexanoate, tert-butyl peroxy-3,5,5-trimethylhexanoate , Dicumyl peroxide, 1, 1-bis (tert-butylperoxy) cyclohexane,
- photoinitiators such as UV initiators are used for curing. These are compounds which split off free radicals when exposed to visible or UV light and thus initiate the polymerization of the coating composition.
- Common UV initiators according to DE-OS 29 28 512 are, for example, benzoin, 2-methylbenzoin, benzoin methyl, ethyl or butyl ether, acetoin, benzil, benzil dimethyl ketal or benzophenone.
- UV initiators are commercially available, for example, from Ciba AG under the trade names (DDarocur 1116, (DIrgacure 184, ®lrgacure 907 and from BASF AG under the brand name (DLucirin TPO.
- Examples of photoinitiators which are absorbed in the short-wave visible range of light DLucirin TPO and ( DLucirin TPO-L from BASF, Ludwigshafen.
- the coating compositions contain 2 to 75, preferably 6 to 50% by weight, based on the total weight of the coating composition, of thinners, which can also be used as a mixture.
- Range from approx. 10 to approx. 250 mPa-s is set.
- Low viscosities of about 1 to 20 mPa-s are customarily used for coating compositions which are intended for flood or dip coatings.
- organic solvents can be used in these coatings in concentrations of up to 75% by weight.
- the suitable viscosities for doctor blade coatings or roller application coatings are in the range from 20 to 250 mPa-s.
- the stated values are only to be understood as guidelines and relate to the measurement of the viscosity at 20 ° C with a rotary viscometer according to DIN 53 019.
- Monofunctional reactive thinners are preferred for coatings for roller application processes. Usual concentrations are between 5 and 25% by weight. Alternatively or in combination, however, organic solvents can also be used as thinners.
- the monofunctional reactive thinners contribute to the good flow properties of the lacquer and thus to good workability.
- the monofunctional reactive thinners have a radical polymerizable group, usually a vinyl function.
- 1-alkenes such as 1-hexene, 1-heptene
- branched alkenes such as vinylcyclohexane, 3,3-dimethyl-1-propene, 3-methyl-1-diisobutylene, 4-methylpentene-1;
- Styrene substituted styrenes with an alkyl substituent in the side chain, such as. B. ⁇ -methylstyrene and ⁇ -ethylstyrene, substituted styrenes with an alkyl substituent on the ring, such as vinyltoluene and p-methylstyrene, halogenated styrenes such as monochlorostyrenes, dichlorostyrenes, tribromostyrenes and tetrabromostyrenes;
- Heterocyclic vinyl compounds such as 2-vinylpyridine, 3-vinylpyridine, 2-methyl-5-vinylpyridine, 3-ethyl-4-vinylpyridine, 2,3-dimethyl-5-vinylpyridine, vinylpyrimidine, vinylpiperidine, 9-vinylcarbazole, 3-vinylcarbazole, 4-vinylcarbazole, 1-vinylimidazole, 2-methyl-1-vinylimidazole, N-vinylpyrrolidone, 2-vinylpyrrolidone, N-vinylpyrrolidine, 3-vinylpyrrolidine, N-vinylcaprolactam, N-vinylbutyrolactam, vinyloxolane, vinylfuran, vinylthiophene, vinylthiophene, vinylthiolthene hydrogenated vinyl thiazoles, vinyl oxazoles and hydrogenated vinyl oxazoles;
- Maleic acid derivatives such as maleic anhydride
- (meth) acrylates and (meth) acrylates, with (meth) acrylates being particularly preferred.
- the term (meth) acrylates encompasses methacrylates and acrylates and mixtures of the two.
- (meth) acrylates derived from saturated alcohols such as methyl (meth) acrylate, ethyl (meth) acrylate, propyl (meth) acrylate, n-butyl (meth) acrylate, tert-butyl ( meth) acrylate, Pentyl (meth) acrylate and 2-ethylhexyl (meth) acrylate;
- Aryl (meth) acrylates such as benzyl (meth) acrylate or
- Phenyl (meth) acrylate where the aryl radicals can in each case be unsubstituted or substituted up to four times;
- Cycloalkyl (meth) acrylates such as 3-vinylcyclohexyl (meth) acrylate,
- Glycol di (meth) acrylates such as 1,4-butanediol di (meth) acrylate,
- Particularly preferred monofunctional reactive diluents are, for example, butyl acrylate, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, hydroxypropyl acrylate, hydroxypropyl methacrylate, 2-ethoxyethyl methacrylate or 2,2,3,3-tetrafluoropropyl methacrylate, Methyl methacrylate, tert-butyl methacrylate, isobornyl methacrylate.
- EP 0 035 272 describes common organic solvents for coating compositions for scratch-resistant lacquers which can be used as thinners. Suitable are e.g. Alcohols such as ethanol, isopropanol, n-propanol, isobutyl alcohol and n-butyl alcohol, methoxypropanol, methoxyethanol. Aromatic solvents such as benzene, toluene or xylene can also be used. Ketones such as acetone or methyl ethyl ketone are suitable. Also ether compounds such as diethyl ether or ester compounds such as e.g. Ethyl acetate, n-butyl acetate or ethyl propionate can be used. The compounds can be used alone or in combination.
- Alcohols such as ethanol, isopropanol, n-propanol, isobutyl alcohol and n-butyl alcohol, methoxypropanol, methoxyethanol.
- Customary additives are to be understood as meaning additives for scratch-resistant coatings which are customary for coating compositions and which can optionally be present in amounts of 0 to 40% by weight, in particular 0 to 20% by weight. The use of these additives is not considered critical to the invention.
- UV absorbers can be present in concentrations of, for example, 0.2 to 20% by weight, preferably 2 to 8% by weight. UV absorbers can be selected, for example, from the group of hydroxybenzotriazoles, triazines and hydroxybenzophenones (see, for example, EP 247480).
- the coating agent according to the invention is intended for the production of scratch-resistant, weather-resistant coatings on plastic substrates.
- polycarbonates include in particular polycarbonates, polystyrenes, polyesters, for example polyethylene terephthalate (PET), which can also be modified with glycol, and polybutylene terephthalate (PBT), cycloolefinic copolymers (COC), acrylonitride / butadiene / styrene copolymers and / or poly (meth) acrylates ,
- PET polyethylene terephthalate
- PBT polybutylene terephthalate
- COC cycloolefinic copolymers
- acrylonitride / butadiene / styrene copolymers and / or poly (meth) acrylates
- Polycarbonates, cycloolefinic polymers and poly (meth) acrylates are preferred, poly (meth) acrylates being particularly preferred.
- Polycarbonates are known in the art. Polycarbonates can be considered formally as polyesters from carbonic acid and aliphatic or aromatic dihydroxy compounds. They are easily accessible by reacting diglycols or bisphenols with phosgene or carbonic acid diesters in polycondensation or transesterification reactions.
- bisphenols include, in particular, 2,2-bis (4-hydroxyphenyl) propane (bisphenol A), 2,2-bis (4-hydroxyphenyl) butane (bisphenol B), 1,1-bis (4-hydroxyphenyl ) cyclohexane (bisphenol C), 2,2'-methylenediphenol (bisphenol F), 2,2-bis (3,5-dibromo-4-hydroxyphenyl) propane (tetrabromobisphenol A) and 2,2-bis (3,5- dimethyl-4-hydroxyphenyl) propane (tetramethylbisphenol A).
- bisphenol A 2,2-bis (4-hydroxyphenyl) propane
- bisphenol B 2,2-bis (4-hydroxyphenyl) butane
- bisphenol C 1,1-bis (4-hydroxyphenyl ) cyclohexane
- bisphenol F 2,2'-methylenediphenol
- 2,2-bis (3,5-dibromo-4-hydroxyphenyl) propane tetrabromobisphenol A
- Such aromatic polycarbonates are usually produced by interfacial polycondensation or transesterification, details of which are given in Encycl. Polym. Be. Engng. 11, 648-718.
- the bisphenols are emulsified as an aqueous, alkaline solution in inert organic solvents, such as, for example, methylene chloride, chlorobenzene or tetrahydrofuran, and reacted with phosgene in a step reaction.
- organic solvents such as, for example, methylene chloride, chlorobenzene or tetrahydrofuran
- Amines are used as catalysts, and phase transfer catalysts are also used for sterically hindered bisphenols.
- the resulting polymers are soluble in the organic solvents used.
- the properties of the polymers can be varied widely by the choice of the bisphenols. If different bisphenols are used at the same time, block polymers can also be built up in multi-stage polycondensation.
- Cycloolefinic polymers are polymers that can be obtained using cyclic olefins, in particular polycyclic olefins.
- Cyclic olefins include, for example, monocyclic olefins, such as cyclopentene, cyclopentadiene, cyclohexene, cycloheptene, cyclooctene and alkyl derivatives of these monocyclic olefins having 1 to 3 carbon atoms, such as methyl, ethyl or propyl, such as methylcyclohexene or dimethylcyclohexene, and acrylate and / or methacrylate derivatives of these Links.
- cycloalkanes with olefinic side chains can also be used as cyclic olefins, such as, for example, cyclopentyl methacrylate.
- Bridged polycyclic olefin compounds are preferred. These polycyclic olefin compounds can have the double bond both in the ring, these are bridged polycyclic cycloalkenes, and in side chains. These are vinyl derivatives, allyloxycarboxy derivatives and (meth) acryloxy derivatives of polycyclic cycloalkane compounds. These compounds may also have alkyl, aryl or aralkyl substituents.
- Exemplary polycyclic compounds are, without being restricted thereby, bicyclo [2.2.1] hept-2-ene (norbomen), Bicyclo [2.2.1] hept-2,5-diene (2,5-norbomadiene), ethyl-bicyclo [2.2.1] hept-2-ene (ethylnorbomen), ethylidene bicyclo [2.2.1] hept-2-ene ( Ethylidene-2-norbomen), phenylbicyclo [2.2.1] hept-2-ene, bicyclo [4.3.0] nona-3,8-diene, tricyclo [4.3.0.1 2 ' 5 ] -3-decene, tricyclo [4.3 .0.1 2.5 ] -3,8-decen- (3,8-dihydrodicyclopentadiene), tricyclo [4.4.0.1 2.5 ] -3-undecene, tetracyclo [4.4.0.1 2.5
- the cycloolefinic polymers are produced using at least one of the cycloolefinic compounds described above, in particular the polycyclic hydrocarbon compounds.
- other olefins which can be copolymerized with the aforementioned cycloolefinic monomers can be used in the preparation of the cycloolefinic polymers. These include Ethylene, propylene, isoprene, butadiene, methylpentene, styrene and vinyl toluene.
- olefins especially the cycloolefins and polycycloolefins, can be obtained commercially.
- many cyclic and polycyclic olefins are available through Diels-Alder addition reactions.
- the cycloolefinic polymers can be prepared in a known manner, as described, inter alia, in Japanese Patents 11818/1972, 43412/1983, 1442/1986 and 19761/1987 and Japanese Patent Laid-Open Nos. 75700/1975, 129434/1980, 127728/1983, 168708/1985, 271308/1986, 221118/1988 and 180976/1990 and in European Patent Applications EP-A-0 6 610 851, EP-A-0 6 485 893, EP-A-0 6 407 870 and EP-A-0 6 688 801.
- the cycloolefinic polymers can be polymerized in a solvent, for example, using aluminum compounds, vanadium compounds, tungsten compounds or boron compounds as a catalyst.
- the polymerization can take place with ring opening or with opening of the double bond.
- cycloolefinic polymers by radical polymerization, using light or an initiator as a radical generator.
- This type of polymerization can take place both in solution and in bulk.
- Another preferred plastic substrate comprises poly (meth) acrylates. These polymers are generally obtained by free-radical polymerization of mixtures which contain (meth) acrylates. These were set out above, whereby, depending on the preparation, both monofunctional and polyfunctional (meth) acrylates can be used, which are described under components C) and E).
- these mixtures contain at least 40% by weight, preferably at least 60% by weight and particularly preferably at least 80% by weight, based on the weight of the monomers, methyl methacrylate.
- compositions to be polymerized can also have further unsaturated monomers which are copolymerizable with methyl methacrylate and the aforementioned (meth) acrylates. Examples of this have been elaborated in particular under component E).
- these comonomers are used in an amount of 0 to 60% by weight, preferably 0 to 40% by weight and particularly preferably 0 to 20% by weight, based on the weight of the monomers, the compounds being used individually or can be used as a mixture.
- the polymerization is generally started with known radical initiators, which are described in particular under component D). These compounds are often used in an amount of 0.01 to 3% by weight, preferably 0.05 to 1% by weight, based on the weight of the monomers.
- the aforementioned polymers can be used individually or as a mixture.
- Various polycarbonates, poly (meth) acrylates or cycloolefinic polymers can also be used here, which differ, for example, in molecular weight or in the monomer composition.
- the plastic substrates according to the invention can be produced, for example, from molding compositions of the aforementioned polymers.
- Thermoplastic molding processes such as extrusion or injection molding, are generally used here.
- the weight average molecular weight M w of the homopolymers and / or copolymers to be used according to the invention as a molding composition for the production of the plastic substrates can vary within wide limits, the molecular weight usually being matched to the intended use and processing mode of the molding composition. In general, however, it is in the range between 20,000 and 1,000,000 g / mol, preferably 50,000 to 500,000 g / mol and particularly preferably 80,000 to 300,000 g / mol, without any intention that this should impose a restriction. This size can be determined, for example, by means of gel permeation chromatography.
- the plastic substrates can be produced by casting chamber processes.
- suitable (meth) acrylic mixtures are given in a mold and polymerized.
- Such (meth) acrylic mixtures generally have the (meth) acrylates set out above, in particular methyl methacrylate.
- the (meth) acrylic mixtures can contain the copolymers set out above and, in particular for adjusting the viscosity, polymers, in particular poly (meth) acrylates.
- the weight average molecular weight M w of the polymers produced by casting chamber processes is generally higher than the molecular weight of polymers used in molding compositions. This results in a number of known advantages. In general, the weight average molecular weight of polymers which are produced by casting chamber processes is in the range from 500,000 to 10,000,000 g / mol, without any intention that this should impose any restriction.
- Preferred plastic substrates which have been produced by the casting chamber process can be obtained from Degussa, BU PLEXIGLAS, Darmstadt under the trade name PLEXIGLAS® GS or from Cyro Inc. USA commercially under the trade name ®Acrylite.
- the molding compositions to be used for the production of the plastic substrates and the acrylic resins may contain all kinds of conventional additives. These include, among others, antistatic agents, antioxidants, mold release agents, flame retardants, lubricants, Dyes, flow improvers, fillers, light stabilizers and organic phosphorus compounds, such as phosphoric acid esters, phosphoric acid diesters and phosphoric acid monoesters, phosphites, phosphorinanes, phospholanes or phosphonates, pigments, weathering protection agents and plasticizers.
- additives include, among others, antistatic agents, antioxidants, mold release agents, flame retardants, lubricants, Dyes, flow improvers, fillers, light stabilizers and organic phosphorus compounds, such as phosphoric acid esters, phosphoric acid diesters and phosphoric acid monoesters, phosphites, phosphorinanes, phospholanes or phosphonates, pigments, weathering protection agents and plasticizers.
- additives include
- Particularly preferred molding compositions comprising poly (meth) acrylates are commercially available under the trade name PLEXIGLAS® from Degussa, BU PLEXIGLAS, Darmstadt or under the trade name (DAcrylite from Cyro Inc. USA.
- Preferred molding compositions the cycloolefinic polymers can be obtained under the trade name ® Topas from Ticona and ⁇ Zeonex from Nippon Zeon, for example polycarbonate molding compositions are available under the trade name ⁇ Makrolon from Bayer or ®Lexan from General Electric.
- the plastic substrate particularly preferably comprises at least 80% by weight, in particular at least 90% by weight, based on the total weight of the substrate, of poly (meth) acrylates, polycarbonates and / or cycloolefinic polymers.
- the plastic substrates particularly preferably consist of polymethyl methacrylate, it being possible for the polymethyl methacrylate to contain customary additives.
- plastic substrates can have an impact strength according to ISO 179/1 of at least 10 kJ / m 2 , preferably at least 15 kJ / m 2 .
- the shape and size of the plastic substrate are not essential to the present invention.
- plate-shaped or tabular substrates are often used, which have a thickness in the range from 1 mm to 200 mm, in particular 5 to 30 mm.
- the moldings can be vacuum-formed parts, blow-molded parts, injection molded parts or extruded plastic parts which, for. B. can be used as components outdoors, as parts of automobiles, housing parts, components of kitchens or sanitary facilities.
- the coating compositions are particularly suitable for solid, flat plates and double or multi-wall sheets.
- Usual dimensions e.g. for solid panels are in the range of 3 x 500 to 2000 x 2000 to 6000 mm (thickness x width x length).
- Multi-wall sheets can be approx. 16 to 32 mm thick.
- plastic substrates Before the plastic substrates are provided with a coating, these can be activated by suitable methods in order to improve the adhesion.
- the plastic substrate can be treated with a chemical and / or physical method, the respective method being dependent on the plastic substrate.
- the coating mixtures described above can be applied to the plastic substrates using any known method. These include immersion processes, spray processes, doctor blades, flood coatings and roller or roller application.
- the coating agent is preferably applied to plastic bodies in such a way that the layer thickness of the hardened layer is 1 to 50 ⁇ m, preferably 5 to 30 ⁇ m. With layer thicknesses below 1 ⁇ m, weather protection and scratch resistance are often inadequate, with layer thicknesses of more than 50 ⁇ m, cracks can form when subjected to bending stress.
- the polymerization takes place, which can be carried out thermally or by means of UV radiation.
- the polymerization can advantageously be carried out under an inert atmosphere to exclude the polymerization-inhibiting atmospheric oxygen, for example under nitrogen gas.
- this is not an essential requirement.
- the polymerization is usually carried out at temperatures below the glass transition temperature of the plastic body.
- the applied coating agent is preferably cured by UV radiation.
- the UV irradiation time required for this depends on the temperature and the chemical composition of the coating agent, on the type and power of the UV source, on its distance from the coating agent and on whether there is an inert atmosphere. A few seconds to a few minutes can serve as a guideline.
- the corresponding UV source should emit radiation in the range from approximately 150 to 400 nm, preferably with a maximum between 250 and 280 nm.
- the radiated energy should be approx. 50 - 4000 mJ / cm2. Approx. 100 to 200 mm can be given as a guideline for the distance between the UV source and the coating layer.
- the moldings of the present invention can be thermoformed extremely well, without thereby damaging their scratch-resistant, dirt-repellent coating.
- the shaping is known to the person skilled in the art.
- the molded body is heated and shaped using a suitable template.
- the temperature at which the forming takes place depends on the softening temperature of the substrate from which the plastic body was produced.
- the other parameters, such as the forming speed and forming force, are also dependent on the plastic, these parameters being known to the person skilled in the art.
- bending forming processes are particularly preferred. Such methods are used in particular for processing cast glass. More detailed information can be found in "Acrylic glass and polycarbonate correct machining and processing" by H.Kaufmann et al. published by Technology transfer ring craft NRW and in VDI guideline 2008 sheet 1 and DIN 8580/9 /.
- the molded articles of the present invention provided with a scratch-resistant, dirt-repellent coating show a high scratch resistance.
- the molded body is transparent, the transparency XD 65 / I O according to DIN 5033 being at least 70%, preferably at least 75%.
- the molded body preferably has a modulus of elasticity according to ISO 527-2 of at least 1000 MPa, in particular at least 1500 MPa, without this being intended to impose a restriction.
- the moldings according to the invention are generally very resistant to weathering.
- the weather resistance according to DIN 53387 (Xenotest) is at least 4000 hours.
- the yellow index according to DIN 6167 (D65 / 10) of preferred moldings is less than or equal to 8, preferably less than or equal to 5, without this being intended to impose a restriction.
- the anti-graffiti effect is achieved by making the surface hydrophobic. This is reflected in a large contact angle with alpha-bromonaphthalene, which has a surface tension of 44.4 mN / m.
- the contact angle at 20 ° C of alpha-bromonaphthalene with the Surface of the plastic body after the scratch-resistant coating has hardened, preferably at least 50 °, in particular at least 70 ° and particularly preferably at least 75 °, without any intention that this should impose a restriction.
- the contact angle with water at 20 ° C. is preferably at least 80 °, in particular at least 90 ° and particularly preferably at least 100 °
- the contact angle can be determined with a contact angle measuring system G40 from Krüss, Hamburg, the implementation being described in the user manual for the contact angle measuring system G40, 1993. The measurement is carried out at 20 ° C.
- the moldings of the present invention can be used, for example, in the construction sector, in particular for the production of greenhouses or winter gardens, or as a noise barrier.
- a coating composition was prepared comprising 16.6 parts by weight of pentarerythritol tetraacrylate, 66.4 parts by weight of 1,6-hexanediol diacrylate, 10 parts by weight of 2-hydroxyethyl methacrylate,
- PLEX 8770 prepolymer available from Röhm GmbH
- Tinuvin 1130 available from Ciba AG.
- the coating agent obtained in this way is applied to a sheet of ⁇ Makrolon (available from Bayer AG) using a spiral doctor blade (12 ⁇ m wet film thickness) and cured after two minutes each time using a F 450 high-pressure mercury lamp from Fusion Systems at a feed rate of 1 m / min and a nitrogen atmosphere.
- the coated plate is formed using a bending process in accordance with DIN 8580/9 / at a temperature of 150 ° C. using a template.
- the bending radius in the test was 120 mm.
- the board was subjected to a Taber test in accordance with DIN 52347 to determine the scratch resistance and a cross cut in accordance with DIN 53151.
- the Taber test was carried out with a contact force of 5.4 N with 100 cycles and a "CS10F" friction wheel from Teledyne Taber.
- the scratch resistance is improved by the forming.
- the elongation at break is 5.9%.
- the coating is sprayed with different paints to determine the dirt-repellent effect. After 24 hours, the paint coating is cleaned with a high-pressure cleaner at 80 ° C for about one minute.
- a mixture according to EP 028 614 was prepared which contained 39 parts by weight of pentaerythritol tetraacrylate, 59 parts by weight of hexanediol diacrylate and 2 parts by weight of Darocur 1116 from Ciba and 1.6 parts by weight of 2- (N-ethylperfluorooctane-sulfamido) ethyl acrylate.
- the mixture was applied to a Makrolon plate according to Example 1 using a spiral doctor knife. After a running time of two minutes, curing is carried out with a high-pressure mercury lamp at a feed speed of 1 m / min under a nitrogen atmosphere. By forming according to Example 1, fine cracks appeared in the paint. The maximum elongation at break (crack formation in the layer) is less than 2%.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Paints Or Removers (AREA)
- Laminated Bodies (AREA)
- Graft Or Block Polymers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10260067A DE10260067A1 (de) | 2002-12-19 | 2002-12-19 | Beschichtungsmittel zur Herstellung von umformbaren Kratzfestbeschichtungen mit schmutzabweisender Wirkung, kratzfeste umformbare schmutzabweisende Formkörper sowie Verfahrn zu deren Herstellung |
DE10260067 | 2002-12-19 | ||
PCT/EP2003/011546 WO2004056929A1 (de) | 2002-12-19 | 2003-10-18 | Beschichtungsmittel zur herstellung von umformbaren kratzfestbeschichtungen mit schmutzabweisender wirkung, kratzfeste umformbare schmutzabweisende formkörper sowie verfahren zu deren herstellung |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1601727A1 true EP1601727A1 (de) | 2005-12-07 |
Family
ID=32404067
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03758013A Withdrawn EP1601727A1 (de) | 2002-12-19 | 2003-10-18 | Beschichtungsmittel zur herstellung von umformbaren kratzfestbeschichtungen mit schmutzabweisender wirkung, kratzfeste umformbare schmutzabweisende formkörper sowie verfahren zu deren herste llung |
Country Status (15)
Country | Link |
---|---|
US (1) | US20060058458A1 (de) |
EP (1) | EP1601727A1 (de) |
JP (1) | JP2006510760A (de) |
KR (1) | KR20050084426A (de) |
CN (1) | CN1729257A (de) |
AU (1) | AU2003274035A1 (de) |
BR (1) | BR0317416A (de) |
CA (1) | CA2509713A1 (de) |
DE (1) | DE10260067A1 (de) |
MX (1) | MXPA05006564A (de) |
MY (1) | MY142522A (de) |
RU (1) | RU2337119C2 (de) |
TW (1) | TWI297033B (de) |
WO (1) | WO2004056929A1 (de) |
ZA (1) | ZA200504905B (de) |
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DE10155230C5 (de) * | 2001-11-09 | 2006-07-13 | Robert Bosch Gmbh | Stiftheizer in einer Glühstiftkerze und Glühstiftkerze |
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US7196133B2 (en) * | 2003-07-08 | 2007-03-27 | Kyoeisha Chemical Co., Ltd. | Surface tension control agent for coating material and coating material containing same |
DE10352177A1 (de) * | 2003-11-05 | 2005-06-02 | Röhm GmbH & Co. KG | Antistatisch beschichteter Formkörper und Verfahren zu seiner Herstellung |
US20060143956A1 (en) * | 2004-03-16 | 2006-07-06 | Star Billy S | Public and private road safety and advertising medium |
DE102004045295A1 (de) * | 2004-09-16 | 2006-03-23 | Röhm GmbH & Co. KG | Kunststoffkörper mit anorganischer Beschichtung, Verfahren zur Herstellung sowie Verwendungen |
DE102004062773A1 (de) * | 2004-12-21 | 2006-06-22 | Röhm GmbH & Co. KG | Beschichtungsmittel zur Herstellung von umformbaren Kratzfestbeschichtungen mit schmutzabweisender Wirkung, kratzfeste umformbare schmutzabweisende Formkörper sowie Verfahren zu deren Herstellung |
DE102005009209A1 (de) * | 2005-02-25 | 2006-08-31 | Röhm GmbH & Co. KG | Beschichtungsmittel zur Herstellung von umformbaren Kratzfestbeschichtungen mit schmutzabweisender Wirkung, kratzfeste umformbare schmutzabweisende Formkörper sowie Verfahren zu deren Herstellung |
DE102005012589B4 (de) * | 2005-03-18 | 2007-06-14 | Basf Coatings Ag | Mit UV-A-Strahlung härtbares, lösemittelhaltiges Gemisch, Verfahren zu seiner Herstellung und seine Verwendung |
DE102005043795A1 (de) * | 2005-09-13 | 2007-03-15 | Heraeus Kulzer Gmbh | Licht- und/oder thermisch härtendes Versiegelungs- und Befestigungsmaterial für natürliches Gestein und Bautenschutz |
DE102006012274A1 (de) * | 2006-03-15 | 2007-09-20 | Votteler Lackfabrik Gmbh & Co. Kg | Lack zur Oberflächenbeschichtung von Formteilen |
DE102007007999A1 (de) * | 2007-02-15 | 2008-08-21 | Evonik Röhm Gmbh | Antigraffiti Beschichtung |
DE102007028601A1 (de) * | 2007-06-19 | 2008-12-24 | Evonik Röhm Gmbh | Reaktivgemisch zur Beschichtung von Formkörpern mittels Reaktionsspritzguss sowie beschichteter Formkörper |
WO2010042668A1 (en) | 2008-10-07 | 2010-04-15 | Ross Technology Corporation | Spill resistant surfaces having hydrophobic and oleophobic borders |
DE102009003221A1 (de) | 2009-05-19 | 2010-11-25 | Evonik Degussa Gmbh | Transparente, witterungsbeständige Barrierefolie für die Einkapselung von Solarzellen II |
DE102009003218A1 (de) | 2009-05-19 | 2010-12-09 | Evonik Degussa Gmbh | Transparente. witterungsbeständige Barrierefolie für die Einkapselung von Solarzellen I |
DE102009003223A1 (de) | 2009-05-19 | 2010-12-09 | Evonik Degussa Gmbh | Transparente, witterungsbeständige Barrierefolie für die Einkapselung von Solarzellen III |
BR112012023312A2 (pt) | 2010-03-15 | 2019-09-24 | Ross Tech Corporation | desentupidor e métodos de produção de superfícies hidrofóbicas |
JP2014512417A (ja) | 2011-02-21 | 2014-05-22 | ロス テクノロジー コーポレーション. | 低voc結合剤系を含む超疎水性および疎油性被覆物 |
KR101764954B1 (ko) * | 2011-06-17 | 2017-08-03 | 디아이씨 가부시끼가이샤 | 불소 함유 경화성 수지, 활성 에너지선 경화성 조성물 및 그 경화물 |
RU2458953C1 (ru) * | 2011-06-30 | 2012-08-20 | Государственное образовательное учреждение высшего профессионального образования "Московский государственный университет инженерной экологии" (ГОУ ВПО "МГУИЭ") | Фотополимеризующаяся акриловая олигомер-олигомерная композиция, износостойкое покрытие на органических стеклах для элементов остекления зданий, сооружений и транспортных средств на ее основе и способ получения износостойкого покрытия |
US10000588B2 (en) * | 2011-07-28 | 2018-06-19 | Eastman Chemical Company | Coating for the inner surface of plastic bottles for protection against degradation from volatile organic compounds |
EP2791255B1 (de) | 2011-12-15 | 2017-11-01 | Ross Technology Corporation | Zusammensetzung und beschichtung für superhydrophobe leistung |
BR112014032676A2 (pt) | 2012-06-25 | 2017-06-27 | Ross Tech Corporation | revestimentos elastoméricos que têm propriedades hidrofóbicas e/ou oleofóbicas |
JP6409770B2 (ja) * | 2013-04-18 | 2018-10-24 | Jsr株式会社 | シリコーン系樹脂用表面改質剤、表面が改質されたシリコーン系樹脂、表面が改質されたコンタクトレンズ、並びに上記樹脂およびレンズの製造方法 |
CN104502536A (zh) * | 2014-12-17 | 2015-04-08 | 廊坊立邦涂料有限公司 | 一种汽车漆耐沾污性能检测方法 |
CN105060729B (zh) * | 2015-07-31 | 2018-06-01 | 安徽和润特种玻璃有限公司 | 一种用于防眩玻璃的耐污耐磨防静电涂膜 |
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-
2002
- 2002-12-19 DE DE10260067A patent/DE10260067A1/de not_active Withdrawn
-
2003
- 2003-10-01 MY MYPI20033749A patent/MY142522A/en unknown
- 2003-10-18 CN CNA2003801067437A patent/CN1729257A/zh active Pending
- 2003-10-18 MX MXPA05006564A patent/MXPA05006564A/es unknown
- 2003-10-18 RU RU2005122603/04A patent/RU2337119C2/ru not_active IP Right Cessation
- 2003-10-18 JP JP2004561141A patent/JP2006510760A/ja active Pending
- 2003-10-18 EP EP03758013A patent/EP1601727A1/de not_active Withdrawn
- 2003-10-18 CA CA002509713A patent/CA2509713A1/en not_active Abandoned
- 2003-10-18 WO PCT/EP2003/011546 patent/WO2004056929A1/de active Application Filing
- 2003-10-18 US US10/539,126 patent/US20060058458A1/en not_active Abandoned
- 2003-10-18 BR BR0317416-6A patent/BR0317416A/pt not_active IP Right Cessation
- 2003-10-18 KR KR1020057011455A patent/KR20050084426A/ko not_active Application Discontinuation
- 2003-10-18 AU AU2003274035A patent/AU2003274035A1/en not_active Abandoned
- 2003-12-16 TW TW092135528A patent/TWI297033B/zh active
-
2006
- 2006-01-25 ZA ZA200504905A patent/ZA200504905B/en unknown
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Cited By (1)
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---|---|---|---|---|
DE10155230C5 (de) * | 2001-11-09 | 2006-07-13 | Robert Bosch Gmbh | Stiftheizer in einer Glühstiftkerze und Glühstiftkerze |
Also Published As
Publication number | Publication date |
---|---|
CA2509713A1 (en) | 2004-07-08 |
WO2004056929A1 (de) | 2004-07-08 |
US20060058458A1 (en) | 2006-03-16 |
ZA200504905B (en) | 2006-03-29 |
TWI297033B (en) | 2008-05-21 |
KR20050084426A (ko) | 2005-08-26 |
BR0317416A (pt) | 2005-11-08 |
RU2337119C2 (ru) | 2008-10-27 |
JP2006510760A (ja) | 2006-03-30 |
RU2005122603A (ru) | 2006-01-20 |
TW200427800A (en) | 2004-12-16 |
MXPA05006564A (es) | 2005-08-16 |
MY142522A (en) | 2010-12-15 |
AU2003274035A1 (en) | 2004-07-14 |
DE10260067A1 (de) | 2004-07-01 |
CN1729257A (zh) | 2006-02-01 |
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