EP0764475B1 - Verfahren zur Effektlackierung genarbter Kunststoffteile - Google Patents
Verfahren zur Effektlackierung genarbter Kunststoffteile Download PDFInfo
- Publication number
- EP0764475B1 EP0764475B1 EP96114863A EP96114863A EP0764475B1 EP 0764475 B1 EP0764475 B1 EP 0764475B1 EP 96114863 A EP96114863 A EP 96114863A EP 96114863 A EP96114863 A EP 96114863A EP 0764475 B1 EP0764475 B1 EP 0764475B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coating
- process according
- drying
- process step
- effect
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims abstract description 80
- 229920003023 plastic Polymers 0.000 title claims abstract description 36
- 239000004033 plastic Substances 0.000 title claims abstract description 36
- 230000000694 effects Effects 0.000 title claims description 40
- 239000000758 substrate Substances 0.000 title description 3
- 238000001035 drying Methods 0.000 claims abstract description 37
- 239000011230 binding agent Substances 0.000 claims abstract description 33
- 229920005989 resin Polymers 0.000 claims abstract description 20
- 239000011347 resin Substances 0.000 claims abstract description 20
- 239000000049 pigment Substances 0.000 claims abstract description 17
- 229920000098 polyolefin Polymers 0.000 claims abstract description 8
- 150000003673 urethanes Chemical class 0.000 claims abstract description 7
- 239000003039 volatile agent Substances 0.000 claims abstract 5
- 239000011248 coating agent Substances 0.000 claims description 39
- 238000000576 coating method Methods 0.000 claims description 27
- 239000011247 coating layer Substances 0.000 claims description 22
- 239000004922 lacquer Substances 0.000 claims description 15
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 13
- 239000002904 solvent Substances 0.000 claims description 8
- 229920005749 polyurethane resin Polymers 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 229920000728 polyester Polymers 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229920006243 acrylic copolymer Polymers 0.000 claims description 4
- 239000011342 resin composition Substances 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims 9
- 238000010422 painting Methods 0.000 abstract description 8
- 238000010382 chemical cross-linking Methods 0.000 abstract description 5
- 239000004814 polyurethane Substances 0.000 abstract description 5
- 239000010410 layer Substances 0.000 description 18
- 239000004971 Cross linker Substances 0.000 description 15
- 238000004132 cross linking Methods 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 239000003973 paint Substances 0.000 description 7
- 238000005507 spraying Methods 0.000 description 7
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 6
- 229920000515 polycarbonate Polymers 0.000 description 5
- 239000004417 polycarbonate Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 239000000470 constituent Substances 0.000 description 4
- -1 polypropylene Polymers 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 4
- 239000004925 Acrylic resin Substances 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- 239000002966 varnish Substances 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000001034 iron oxide pigment Substances 0.000 description 2
- 239000004611 light stabiliser Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- IEQIEDJGQAUEQZ-UHFFFAOYSA-N phthalocyanine Chemical compound N1C(N=C2C3=CC=CC=C3C(N=C3C4=CC=CC=C4C(=N4)N3)=N2)=C(C=CC=C2)C2=C1N=C1C2=CC=CC=C2C4=N1 IEQIEDJGQAUEQZ-UHFFFAOYSA-N 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- RBTKNAXYKSUFRK-UHFFFAOYSA-N heliogen blue Chemical compound [Cu].[N-]1C2=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=NC([N-]1)=C(C=CC=C3)C3=C1N=C([N-]1)C3=CC=CC=C3C1=N2 RBTKNAXYKSUFRK-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920001707 polybutylene terephthalate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000006277 sulfonation reaction Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 238000009281 ultraviolet germicidal irradiation Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/57—Three layers or more the last layer being a clear coat
- B05D7/574—Three layers or more the last layer being a clear coat at least some layers being let to dry at least partially before applying the next layer
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
Definitions
- the invention relates to a method for producing Effect coatings on polar, grained plastic parts.
- plastic parts such as e.g. Bumpers, spoilers, hubcaps or mirror housings to the Metal body attached.
- plastic parts made of non-polar Polyolefin plastics such as polypropylene or the like Blends and these should be painted, so it is necessary to the to prepare non-polar plastic surfaces for painting, to ensure the necessary adhesion of the paint layer.
- methods have become known that serve to to create a polar surface for subsequent painting. Examples of such methods are physical and chemical Treatment methods, such as flaming or UV irradiation of the Plastic surfaces or chemical modification with aggressive ones Agents such as sulfonation. But it can also adhesion-promoting primer layers are applied.
- the chlorinated polyolefins (CPO) have proven particularly effective contain.
- the plastic parts to be painted have a smooth, shiny surface.
- the same plastic part is often painted or unpainted for reasons of a rational workflow in an assembly line.
- the unpainted plastic part must have a surface that appears matt to the viewer in order to visually conceal scratches or points of deposit. This is done by graining the surface of the plastic parts.
- the fineness of the grain is given in ⁇ m, and particularly suitable for vehicle mounting parts are common plastic parts with a grain of ⁇ 10 ⁇ m, in particular, for example, with a between 20 and 50 ⁇ m underlying grain.
- plastic parts with only one type of surface structure are preferably used, for example only parts with 40 ⁇ m grain.
- the overpainting of such grained plastic parts is however problematic in terms of effects training and Color matching the color of the body, especially in the Case of effect painting.
- an effect basecoat on the grained plastic part is therefore applied a smooth primer coat.
- the primer layer can be made of harmless materials.
- chemically crosslinking paint systems used according to the Application for one to be applied below Top coat suitable primer under Drying at temperatures between 60 and 100 ° C, for example be cured.
- Examples of chemically crosslinking for the Lacquer systems suitable for plastic priming are two-component Epoxy / amine systems and two-component polyurethane systems.
- To Application and curing of these primers can be the decorative im general from color and / or effect basecoat and protective clearcoat can be applied.
- the object of the invention is to provide a method for Production of effect coatings on grained plastic parts, the the problems of lack of effect formation and color matching with the color of the other body parts and can be carried out in an energy-saving manner.
- Drying in process stages b) and d) can be done in this way, for example be carried out that the drying time is 1 to 3 minutes is. Up to a residual content of 5 to 15% by weight is preferred, particularly preferably from 5 to 10% by weight of that used Temperature in the applied coating film contains volatile components dried on. It is generally worked so that the Drying of the first two layers, i.e. process steps b) and d), takes place under temperature and time conditions, which under those the joint drying or hardening of the three layers in Process stage f) are. If necessary, after the order of the Clear coats and before drying or hardening the three together Coating layers, i.e. between process stages e) and f) be ventilated. The ventilation can, for example, at 20 to 30 ° C, be carried out for 1 to 3 minutes.
- polar plastics other than pure olefin or diene polymers such as, for example, polyamide, polyurethane, polycarbonate or polyester, such as, for example, polybutylene terephthalate, and corresponding blends are used as the substrate.
- Plastic parts made of polyolefin plastics are unsuitable. In particular, they are plastic parts that are used as motor vehicle add-on parts, such as bumpers or spoilers.
- the plastic parts used in the present process have a grained surface, for example, with a 10 to 50 ⁇ m-grain, preferably a greater than 20 ⁇ m underlying grain.
- a lacquer layer is first made a pigment- and filler-free or plain-colored pigmented Coating agent applied, the binder base is physically drying binder systems. It can happen also about binders / crosslinking systems which are covalently crosslinkable per se act under the conditions of drying or Hardening step f) of the method according to the invention however, do not suffer from chemical crosslinking. Especially in The binder systems do not develop a temperature range below 110 ° C chemical reactivity.
- the crosslinkers that can be used are among these Conditions of physically dryable, film-forming systems, e.g. Melamine resins.
- the coating agent is preferably known per se derived color and / or effect basecoat coating agents.
- the Coating agents can be formulated on the basis of solvents, however, it is preferably an aqueous coating agent whose Binder systems in a suitable manner, e.g. anionic, cationic or are non-ionic, stabilized.
- usable basecoat coating agents are customary Lacquer systems that use one or more common base resins as film-forming Contain binders. Although they can contain crosslinkers, these however, unfold under the conditions of drying or hardening of the Process step f) no crosslinking effect compared to Binders.
- the basecoat contains film-forming binders (Base resins) one or more polyurethane resins and / or oligomers Urethanes (oligourethanes), preferably with a content of at least 15 % By weight, based on the solid resin content of the basecoat.
- Film-forming binders are preferably polyester and / or (Meth) acrylic copolymer resins.
- the coating agent applied in process step a) is preferred uni-colored pigmented, i.e. it is preferably a Basecoat, in addition to the usual physically drying and / or chemically crosslinkable binders and crosslinkers inorganic and / or organic colored pigments, such as e.g. Titanium dioxide, Iron oxide pigments, carbon black, azo pigments, phthalocyanine pigments, however contains no effect pigments.
- a Basecoat in addition to the usual physically drying and / or chemically crosslinkable binders and crosslinkers inorganic and / or organic colored pigments, such as e.g. Titanium dioxide, Iron oxide pigments, carbon black, azo pigments, phthalocyanine pigments, however contains no effect pigments.
- Examples of the preferred water-based paint systems or Waterborne paint binder systems which in process step a) of can be used can be found in DE-A-36 28 124, DE-A-40 25 264, EP-A-0 089 497, EP-A-0 379 158, EP-A-0 427 979, EP-A-0 512 524, EP-A-0 581 211, EP-A-0 584 818 and WO 95/16004.
- the first coating layer microns in a dry film thickness of 5 to 40, preferably 20 and 30 ⁇ administered m interlocutory, zB dies. It is advisable to choose the dry layer thickness of the first coating layer in the upper range of values for larger grain of the plastic substrate to be painted.
- the first coating layer is dried at 20 to 80 ° C. to a residual content of 3 to 20% by weight of the volatile constituents contained in the applied coating film at the temperature used, for example within 1 to 3 minutes.
- process step c) of the inventive method with a known effect base paint based on organic solvents or, preferably, of water to a dry film thickness of for example 10 to 30 ⁇ m, preferably 15-25 ⁇ m, in the wet-on-wet Process painted over eg by spraying.
- a known effect base paint based on organic solvents or, preferably, of water to a dry film thickness of for example 10 to 30 ⁇ m, preferably 15-25 ⁇ m, in the wet-on-wet Process painted over eg by spraying.
- the effect basecoats known per se are effect and in general also color Basecoat coating agents, such as those used for the production of Basecoat / clearcoat two-coat coatings are used and in large numbers are known for example from the patent literature.
- the effect basecoats can be formulated on the basis of solvents , but it is preferably aqueous effect basecoats, their binder systems in a suitable manner, e.g. anionic, are stabilized cationically or non-ionically. It can be for example, physically drying binder systems or are covalently crosslinkable binder / crosslinker systems that under the conditions of forced drying of the process step f) the method according to the invention, however, no chemical crosslinking suffer. Especially in the temperature range below 110 ° C Binder systems no chemical reactivity. It is a matter of usual coating systems, which as one or more common base resins contain film-forming binders.
- Binders You can use crosslinkers included, but unfold under the conditions of drying of process step f) no crosslinking effect compared to Binders.
- base resins for example polyester, polyurethane and / or (Meth) acrylic copolymer resins can be used.
- base resins for example polyester, polyurethane and / or (Meth) acrylic copolymer resins can be used.
- the preferred Effect waterborne basecoats preferably contain polyurethane resins, particularly preferably at least in a proportion of 15% by weight on the solid resin content of the aqueous effect basecoat.
- Effect basecoats used contain in addition to the usual physical drying and / or chemically crosslinking binder systems
- Effect pigments e.g. Metal pigments, e.g. made of titanium, aluminum or Copper, interference pigments, e.g. titanium dioxide coated Aluminum, coated mica, graphite effect pigments, platelet-shaped iron oxide, platelet-shaped Copper phthalocyanine pigments.
- interference pigments e.g. titanium dioxide coated Aluminum, coated mica, graphite effect pigments, platelet-shaped iron oxide, platelet-shaped Copper phthalocyanine pigments.
- coloring inorganic and / or organic colored pigments e.g. Titanium dioxide, iron oxide pigments, carbon black, azo pigments, Phthalocyanine pigments.
- effect basecoats can contain customary auxiliaries included, such as Fillers, catalysts, leveling agents, Anti-cratering agent, light stabilizer, if necessary in combination with Antioxidants.
- effect basecoats or effect basecoat systems Solvent base which in process step c) of the invention Process can be used can be found in DE-A-29 24 632, DE-A-42 18 106, EP-A-0 302 296, WO-91 00 895 and WO-95 05 425.
- Examples of the process step c) of the invention Aqueous effect basecoat systems preferably used in the process in DE-A-38 41 540, DE-A-41 22 266, EP-A-0 089 497, EP-A-0 287 144, EP-A-0 427 979.
- aqueous effect basecoat systems used with particular preference in DE-A-36 28 124, DE-A-40 25 264, EP-A-0 379 158, EP-A-0 512 524, EP-A-0 581 211 and EP-A-0 584 818.
- first and second basecoat different basecoats may be preferred however, similar basecoats are used as in the following is explained.
- the solid resin composition that for the production of the first and second coating layers the basecoats used are essentially the same, i.e. the qualitative has the same solid resin composition (the same binders and crosslinkers may be present) and in the quantitative Solid resin composition only a fluctuation range of less than 30 % By weight, preferably below 20% by weight, particularly preferably below 15% by weight, each based on the relative weight proportion of each Has binder and any crosslinker present.
- the effect layer applied in process step c) of the process according to the invention is in process step d) at 20 to 80 ° C. to a residual content of 3 to 20% by weight of the volatile constituents contained in the applied coating film at the applied temperature, for example within 1 to 3 Minutes dried.
- process step e) with a known clear lacquer coating agent, for example in a dry layer thickness of 25 to 50 ⁇ m in the wet-on-wet process, for example by spraying.
- the coating layer is basically suitable for all known clearcoats, the chemical under the temperature conditions of step f) network.
- This can be one or preferably act multi-component clear lacquer coating agents. It can be Act systems based on solvents or are water-borne clear varnishes, the binder systems of which are suitable Manner, e.g. are anionically, cationically or non-ionically stabilized.
- the waterborne clearcoat systems can be water-soluble or water-dispersed systems, especially Act emulsion systems.
- the clear lacquer coating agents are in Method step f) of the method according to the invention with training chemically cross-linked covalent bonds.
- the clear lacquers which can be used in the process according to the invention are concerned it is usual clearcoat coating agents, the one or more usual Contain base resins as film-forming binders. They contain if the base resins which are not self-crosslinking are also crosslinkers. Both the Base resin component and the crosslinker component are subject no restriction, except that it is under the conditions of step f) must be chemically crosslinkable.
- film-forming binders for example Polyester, polyurethane and / or poly (meth) acrylate resins are used become.
- base resins for example Polyester, polyurethane and / or poly (meth) acrylate resins are used become.
- the selection of the crosslinkers that may be included not critical, it depends on the functionality of the base resins, i.e.
- crosslinkers are selected so that they are one for Functionality of the base resins complementary, reactive functionality exhibit.
- Preferred examples of such complementary Functionalities between base resin and crosslinker are: Carboxyl / epoxy, (meth) acryloyl / CH-acidic group and preferred Hydroxyl / free isocyanate. If compatible with one another, too several such complementary functionalities in one clear coat coexist. The possibly in the clear coats contained crosslinkers can be present individually or in a mixture.
- non-aqueous clearcoat systems used in the invention Processes which can preferably be used as clear lacquer can be found in DE-A-40 17 075, DE-A-41 24 167, EP-A-0 318 800, EP-A-0 327 031 and EP-A-0 355 959.
- water clearcoat systems used in the process according to the invention can preferably be used as clear lacquer, can be found in DE-A-41 01 696, DE-A-42 03 510, EP-A-0 496 205, EP-A-0 469 210, EP-A-0 626 401 and EP-A-0 626 432.
- the wet-on-wet in process step e) of the process according to the invention applied clear coat can optionally between 1 and 3 Minutes at 20 to 30 ° C flash off.
- Process step f) the three coating layers under chemical Crosslinking of the outer clear lacquer layer dried together Temperatures between 60 and 110 ° C.
- the method according to the invention allows the production of Effect coatings on grained plastic parts in the sense of a wet-on-wet application three coating layers, the three Coating layers are dried together.
- the outer Clear coat chemically forming covalent bonds networked.
- a good result is obtained by the process according to the invention Effects training.
- the grain of the plastic surface is balanced, color deviations between the after Effect-painted process according to the invention Plastic parts and one painted in the same effect color Body do not occur.
- the method also has the advantage that it has few drying steps so that it is not necessary several energy-intensive drying and curing steps perform.
- a plastic plate made of polycarbonate with a grain of 40 ⁇ m is spray painted in 20 ⁇ m dry film thickness with a silver metallic aqueous basecoat material according to DE-A-42 24 617th After drying for three minutes at 20 ° C., a commercially available two-component clear varnish based on acrylate resin is overpainted in a dry layer thickness of 35 ⁇ m by spraying. After forced drying at 80 ° C for 30 minutes, a metallic coating with a disrupted flop is obtained.
- a plastic plate made of polycarbonate with a grain of 40 ⁇ m is spray painted in 20 ⁇ m dry film thickness with the silver metallic base coat from Example. 1 After drying for three minutes at 20 ° C., a further layer of the same metallic basecoat is also applied in a 20 ⁇ m dry layer thickness by spraying. After drying for three minutes at 20 ° C., a commercially available two-component clear lacquer based on acrylate resin is overcoated in a dry layer thickness of 35 ⁇ m by spraying. After forced drying at 80 ° C for 30 minutes, a metallic coating with a disrupted flop is obtained.
- a plastic plate made of polycarbonate with a grain of 40 ⁇ m is spray painted in 20 ⁇ m dry film thickness with a single-color water-based coating according to WO 95/16004, Example 4.2.
- the silver-colored metallic basecoat from Example 1 is applied in a 20 ⁇ m dry layer thickness by spraying.
- a commercially available two-component clear lacquer based on acrylate resin is overcoated in a dry layer thickness of 35 ⁇ m by spraying.
- After forced drying at 80 ° C for 30 minutes, a metallic coating with a good metallic effect and a good flop is obtained.
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Laminated Bodies (AREA)
Description
Claims (11)
- Verfahren zur Effektlackierung von polaren Kunststoff teilen mit genarbter Oberfläche, bei dem mana) eine von Effektpigmenten und modifizierten Polyolefinen freie erste Überzugsschicht aus einem Überzugsmittel auf der Basis physikalisch trocknender, ein oder mehrere Polyurethanharze und/oder oligomere Urethane enthaltender Bindemittelsysteme, die bei den im Verfahrensschritt f) angewendeten Temperaturen nicht chemisch vernetzen, in einer Trockenschichtdicke von 5 bis 40 µm aufträgt,b) bei 20 bis 80°C bis zu einem Restgehalt von 3 bis 20 Gew.-% der bei der angewandten Temperatur im aufgetragenen Überzugsfilm enthaltenen flüchtigen Anteile antrocknet,c) naß-in-naß mit einem Effektbasislack überlackiert,d) bei 20 bis 80°C bis zu einem Restgehalt von 3 bis 20 Gew.-% der bei der angewandten Temperatur im aufgetragenen Überzugsfilm enthaltenen flüchtigen Anteile antrocknet,e) naß-in-naß mit einem flüssigen Klarlack, der bei den in Verfahrensschritt f) angewendeten Trocknungstemperaturen unter Ausbildung kovalenter Bindungen chemisch vernetzt, überlackiert undf) die erhaltenen drei Überzugsschichten bei Temperaturen von 60 bis 110°C gemeinsam trocknet bzw. härtet.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man zur Ausbildung der ersten Überzugsschicht im Verfahrensschritt a) ein Überzugsmittel verwendet, bei dem es sich um ein übliches Überzugsmittel zur Ausbildung von Basislackschichten handelt.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die genarbte Oberfläche ein Grain von 10 bis 50 µm besitzt.
- Verfahren nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß zur Herstellung der ersten Überzugsschicht im Verfahrensschritt a) ein Überzugsmittel auf Lösemittelbasis verwendet wird.
- Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß ein Überzugsmittel verwendet wird, das neben Polyurethanharzen und/oder oligomeren Urethanen auch Polyester- und/oder (Meth)acrylcopolymer-Harze als Bindemittel enthält.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß zur Herstellung der ersten Überzugsschicht im Verfahrensschritt a) ein Überzugsmittel auf wäßriger Basis verwendet wird.
- Verfahren nach Anspruch 1 bis 3, dadurch gekennzeichnet, daß das Überzugsmittel als Bindemittel mindestens 15 Gew.-% eines oder mehrerer Polyurethanharze und/oder oligomerer Urethane, bezogen auf den Festharzgehalt des Überzugsmittels, enthält.
- Verfahren nach Anspruch 6, dadurch gekennzeichnet, daß ein Überzugsmittel verwendet wird, das neben Polyurethanharzen und/oder oligomeren Urethanen auch Polyester- und/oder (Meth)acrylcopolymer-Harze als Bindemittel enthält.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Festharzzusammensetzungen von Bindemittel und/oder Vernetzer für die erste in Verfahrenstufe a) erstellte Überzugsschicht und die zweite in Verfahrensstufe c) erstellte Überzugsschicht qualitativ gleich sind.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Antrocknung der ersten beiden Schichten in den Verfahrensstufen b) und d) unter Temperatur- und Zeitbedingungen erfolgt, die unter denen der gemeinsamen Trocknung bzw. Härtung der beiden Schichten in der Verfahrensstufe f) liegen.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß es zur Lackierung von Kraftfahrzeugteilen aus polaren Kunststoffen mit genarbter Oberfläche durchgeführt wird.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19535452A DE19535452A1 (de) | 1995-09-23 | 1995-09-23 | Verfahren zur Effektlackierung genarbter Kunststoffteile |
| DE19535452 | 1995-09-23 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0764475A1 EP0764475A1 (de) | 1997-03-26 |
| EP0764475B1 true EP0764475B1 (de) | 2001-07-04 |
Family
ID=7773013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96114863A Expired - Lifetime EP0764475B1 (de) | 1995-09-23 | 1996-09-17 | Verfahren zur Effektlackierung genarbter Kunststoffteile |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5747114A (de) |
| EP (1) | EP0764475B1 (de) |
| AT (1) | ATE202731T1 (de) |
| DE (2) | DE19535452A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2767075B1 (fr) * | 1997-08-05 | 2001-09-21 | Peguform France | Procede de realisation d'une surface d'aspect chrome sur un support en matiere plastique et element comportant un tel support et une telle surface |
| DE10116929A1 (de) | 2001-04-05 | 2002-11-07 | Bosch Gmbh Robert | Gleitlackkomponente, Gleitlack und Verfahren zum Beschichten von Elastomeren wie Scheibenwischerblättern |
| CA2491308A1 (en) * | 2004-12-29 | 2006-06-30 | The Sherwin-Williams Company | Method of applying automotive primer-surfacer using a squeegee |
| CN105944941A (zh) * | 2016-07-18 | 2016-09-21 | 青海省公路科研勘测设计院 | 一种玻璃钢防眩网的喷塑方法 |
| CA3079082A1 (en) | 2017-10-23 | 2019-05-02 | Basf Coatings Gmbh | Primer coating material system for plastics substrates |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3210051A1 (de) * | 1982-03-19 | 1983-09-29 | Basf Farben + Fasern Ag, 2000 Hamburg | Wasserverduennbares ueberzugsmittel zur herstellung der basisschicht eines mehrschichtueberzuges |
| DE3725784A1 (de) * | 1987-08-04 | 1989-02-16 | Basf Lacke & Farben | Beschichtungszusammensetzungen und verfahren zur herstellung eines mehrschichtigen, schuetzenden und/oder dekorativen ueberzuges auf einer substratoberflaeche |
| DE3727081A1 (de) * | 1987-08-14 | 1989-02-23 | Merck Patent Gmbh | Beschichtungen |
| JPH0749561B2 (ja) * | 1988-05-13 | 1995-05-31 | 関西ペイント株式会社 | 水性塗料及びそれを用いる塗装法 |
| DE69004274T2 (de) * | 1989-01-18 | 1994-02-24 | Kansai Paint Co Ltd | Wässerige thermoplastische Beschichtungszusammensetzung für Kunststoff-Werkstoffe sowie dieselbe benützendes Beschichtungsverfahren. |
| US5242751A (en) * | 1989-04-27 | 1993-09-07 | Ppg Industries, Inc. | Paint composites |
| DE4115015A1 (de) * | 1991-05-08 | 1992-11-12 | Herberts Gmbh | Physikalisch trocknendes ueberzugsmittel auf waessriger basis und dessen verwendung |
| DE4308859A1 (de) * | 1993-03-19 | 1994-09-22 | Basf Lacke & Farben | Füllstoffpaste zur Verwendung in Basislacken zur Beschichtung von Polyolefin-Substraten, Basislacke sowie Verfahren zur Direktlackierung von Polyolefin-Substraten |
| DE4315467A1 (de) * | 1993-05-10 | 1994-11-17 | Basf Lacke & Farben | Füllstoffpaste zur Verwendung in Basislacken zur Beschichtung von Kunststoff- und Metallsubstraten, Basislacke sowie Verfahren zur Direktlackierung von Metall- und Kunststoffsubstraten |
| DE4328092A1 (de) * | 1993-08-20 | 1995-02-23 | Herberts Gmbh | Emulgatorfreies wäßriges Überzugsmittel und dessen Verwendung bei Verfahren zur Herstellung von Mehrschichtlackierungen |
| DE4344063C1 (de) * | 1993-12-23 | 1995-06-08 | Herberts Gmbh | Wäßrige Bindemitteldispersion für physikalisch trocknende Überzugsmittel und deren Verwendung |
-
1995
- 1995-09-23 DE DE19535452A patent/DE19535452A1/de not_active Withdrawn
-
1996
- 1996-09-17 EP EP96114863A patent/EP0764475B1/de not_active Expired - Lifetime
- 1996-09-17 DE DE59607206T patent/DE59607206D1/de not_active Expired - Fee Related
- 1996-09-17 AT AT96114863T patent/ATE202731T1/de not_active IP Right Cessation
- 1996-09-18 US US08/710,476 patent/US5747114A/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE59607206D1 (de) | 2001-08-09 |
| DE19535452A1 (de) | 1997-03-27 |
| ATE202731T1 (de) | 2001-07-15 |
| EP0764475A1 (de) | 1997-03-26 |
| US5747114A (en) | 1998-05-05 |
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