EP0828568B1 - Verfahren zur mehrschichtlackierung - Google Patents
Verfahren zur mehrschichtlackierung Download PDFInfo
- Publication number
- EP0828568B1 EP0828568B1 EP96917417A EP96917417A EP0828568B1 EP 0828568 B1 EP0828568 B1 EP 0828568B1 EP 96917417 A EP96917417 A EP 96917417A EP 96917417 A EP96917417 A EP 96917417A EP 0828568 B1 EP0828568 B1 EP 0828568B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- coat
- lacquer
- coating
- coating agent
- clear
- 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
- 238000007591 painting process Methods 0.000 title 1
- 239000011248 coating agent Substances 0.000 claims abstract description 65
- 239000004922 lacquer Substances 0.000 claims abstract description 38
- 238000000576 coating method Methods 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 23
- 239000000758 substrate Substances 0.000 claims abstract description 10
- 239000000843 powder Substances 0.000 claims description 7
- 238000001652 electrophoretic deposition Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 10
- 230000008021 deposition Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 37
- 229920005989 resin Polymers 0.000 description 29
- 239000011347 resin Substances 0.000 description 29
- 239000011247 coating layer Substances 0.000 description 21
- 239000000049 pigment Substances 0.000 description 19
- 239000011230 binding agent Substances 0.000 description 14
- 239000004971 Cross linker Substances 0.000 description 13
- 239000000306 component Substances 0.000 description 12
- 125000000129 anionic group Chemical group 0.000 description 6
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000004132 cross linking Methods 0.000 description 6
- 238000004070 electrodeposition Methods 0.000 description 6
- 239000000945 filler Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000003973 paint Substances 0.000 description 6
- 239000000654 additive Substances 0.000 description 5
- 229920000647 polyepoxide Polymers 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- 125000002091 cationic group Chemical group 0.000 description 4
- 239000000470 constituent Substances 0.000 description 4
- 239000003822 epoxy resin Substances 0.000 description 4
- -1 for example Chemical class 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 238000010422 painting Methods 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- 229920006243 acrylic copolymer Polymers 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 3
- 239000003431 cross linking reagent Substances 0.000 description 3
- 125000003010 ionic group Chemical group 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 229920001228 polyisocyanate Polymers 0.000 description 3
- 239000005056 polyisocyanate Substances 0.000 description 3
- 229910052710 silicon Chemical group 0.000 description 3
- 239000010703 silicon Chemical group 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000002966 varnish Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 239000005062 Polybutadiene Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 239000003963 antioxidant agent Substances 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000010382 chemical cross-linking Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 229920002857 polybutadiene Polymers 0.000 description 2
- 239000011814 protection agent Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 1
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 239000005995 Aluminium silicate Substances 0.000 description 1
- OAKJQQAXSVQMHS-UHFFFAOYSA-N Hydrazine Chemical compound NN OAKJQQAXSVQMHS-UHFFFAOYSA-N 0.000 description 1
- NRCMAYZCPIVABH-UHFFFAOYSA-N Quinacridone Chemical compound N1C2=CC=CC=C2C(=O)C2=C1C=C1C(=O)C3=CC=CC=C3NC1=C2 NRCMAYZCPIVABH-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical group [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000003647 acryloyl group Chemical group O=C([*])C([H])=C([H])[H] 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 235000013877 carbamide Nutrition 0.000 description 1
- 238000003421 catalytic decomposition reaction Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000008199 coating composition Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 238000000227 grinding Methods 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
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- ARZLUCYKIWYSHR-UHFFFAOYSA-N hydroxymethoxymethanol Chemical compound OCOCO ARZLUCYKIWYSHR-UHFFFAOYSA-N 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000001034 iron oxide pigment Substances 0.000 description 1
- 239000012948 isocyanate Substances 0.000 description 1
- 150000002513 isocyanates Chemical class 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052982 molybdenum disulfide Inorganic materials 0.000 description 1
- 150000002763 monocarboxylic acids Chemical class 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- XYFCBTPGUUZFHI-UHFFFAOYSA-O phosphonium Chemical compound [PH4+] XYFCBTPGUUZFHI-UHFFFAOYSA-O 0.000 description 1
- 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 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 125000005372 silanol group Chemical group 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000007592 spray painting technique Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-O sulfonium group Chemical group [SH3+] RWSOTUBLDIXVET-UHFFFAOYSA-O 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
- 125000001302 tertiary amino group Chemical group 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 1
- 238000005809 transesterification reaction Methods 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000000080 wetting agent Substances 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
- B05D7/576—Three layers or more the last layer being a clear coat each layer being cured, at least partially, separately
-
- 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
-
- 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
- B05D7/577—Three layers or more the last layer being a clear coat some layers being coated "wet-on-wet", the others not
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D13/00—Electrophoretic coating characterised by the process
- C25D13/22—Servicing or operating apparatus or multistep processes
Definitions
- the invention relates to a method for producing a multi-layer paint conductive, especially metallic Substrates that are particularly suitable for automotive painting.
- the total layer thickness of such automotive paintwork is in practice between 90 and 130 ⁇ m, which is the sum of 15 to 25 ⁇ m Layer thickness for the primer, 30 to 40 ⁇ m for the filler layer, 10 to 25 ⁇ m for the basecoat and 30 to 40 ⁇ m for the Clear coat results.
- These layer thicknesses become significant exceeded if paintwork with particularly good optical Appearance, i.e. with outstanding gloss and top coat for example in the painting of motor vehicles of the upper and luxury class should be achieved.
- DE-A-42 15 070 in DE-A-38 39 905 or in US-A-5203975
- Layer thicknesses 120 ⁇ m and above, e.g. up to 170 ⁇ m, what from Saving material and saving weight on the finished Vehicle is undesirable.
- the object of the invention is to provide multi-layer coatings, in particular automotive paintwork, the Requirements of an outstanding gloss and topcoat level are sufficient, without the normal measure of the total layer thickness of automotive paintwork to exceed and without disadvantages in To have to accept overall property level.
- a Clear coat with a high thickness of 40 to 80 microns, preferably from 50 to 60 ⁇ m provided. This is applied to the baked basecoat be applied.
- the clear coat can consist of one or more Layers exist, the first clear lacquer layer preferably before Application of the further layers of clear lacquer is baked.
- Several Clearcoat layers can be the same or different Clear coating agents are created.
- the electrophoretic separable coating agent (I) contains components that the first Coating layer in the baked state one for electrophoretic Depositing another coating layer from one of (I) various electrophoretically depositable coating agents (II) give sufficiently low resistivity, and that the electrophoretically depositable coating agent (II) color and / or contains effect pigments.
- the coating agents (I) and (II) are aqueous Coating agents with a solids content of, for example, 10 to 20% by weight.
- This consists of conventional binders, with at least a part the binder ionic and / or convertible into ionic groups Substituents and possibly capable of chemical crosslinking Groups carries, as well as any existing crosslinkers, electrically conductive components, fillers, pigments and paint Additives.
- the ionic groups or groups of the binders which can be converted into ionic groups can be anionic or groups which can be converted into anionic groups, for example acidic groups such as -COOH, -SO 3 H and / or -PO 3 H 2 and the corresponding anionic groups neutralized with bases . They can also be cationic or convertible into cationic groups, for example basic groups, preferably nitrogen-containing basic groups; these groups can be quaternized or they are converted into ionic groups using a conventional neutralizing agent, for example an organic monocarboxylic acid, such as, for example, formic acid or acetic acid. Examples are amino, ammonium, for example quaternary ammonium, phosphonium and / or sulfonium groups.
- the usual anionic group-containing anodically depositable electrocoat binders and paints can be used to produce the first and / or second coating layer.
- examples are those as described in DE-A-28 24 418. These are, for example, binders based on polyesters, epoxy resin esters, (meth) acrylic copolymer resins, maleate oils or polybutadiene oils with a weight average molecular weight (Mw) of, for example, 300-10000 and an acid number of 35-300 mg KOH / g.
- Mw weight average molecular weight
- binders based on polyesters or (meth) acrylic copolymer resins are preferably used as anodically depositable binders.
- the binders carry -COOH, -SO 3 H and / or -PO 3 H 2 groups. After neutralization of at least some of the acidic groups, the resins can be converted into the water phase.
- the binders can be self-crosslinking or externally crosslinking.
- the lacquers can therefore also contain customary crosslinking agents, for example triazine resins, crosslinking agents which contain groups capable of transesterification or blocked polyisocyanates.
- the first and / or second coating layers are the usual cathodic ones Electrophoretic coatings (KTL) based on cationic or basic Binder.
- KTL Electrophoretic coatings
- Such basic resins are, for example, primary, resins containing secondary and / or tertiary amino groups, the Amine numbers e.g. are 20 to 250 mg KOH / g.
- the weight average of the Molar mass (Mw) of the base resins is preferably 300 to 10,000.
- base resins examples include amino epoxy resins, amino epoxy resins with terminal double bonds, amino epoxy resins with primary OH groups, Aminopolyurethane resins, amino group-containing polybutadiene resins or modified epoxy resin-carbon dioxide-amine reaction products as well which is preferred in the production of the second coating layer Amino (meth) acrylate resins used.
- base resins can be self-crosslinking or they are used with known crosslinkers Mixture used.
- crosslinkers examples include Aminoplast resins, blocked polyisocyanates, crosslinkers with terminal Double bonds, polyepoxide compounds or crosslinkers Contain transesterifiable groups.
- non-yellowing CTL systems are preferred used a yellowing or discoloration of those produced by the process according to the invention Avoid multi-layer painting when baking. For example it is blocked by means of specially selected KTL systems crosslinking polyisocyanates, such as in EP-A-0 265,363.
- the electrocoat (ETL) coating agent (I) contains components that impart electrical conductivity. They should give the first coating layer in the baked state a resistivity which is sufficiently low for the electrophoretic deposition of a further coating layer from the electrophoretically depositable coating agent (II), for example between 10 3 and 10 8 Ohm.cm.
- Such constituents are particulate inorganic or organic electrical conductors or semiconductors, such as, for example, iron oxide black, graphite, carbon black, metal powder, for example made of aluminum, copper or stainless steel, molybdenum disulfide or polymers with electrical conductivity, such as, for example, preferably polyaniline.
- electrodeposition paints containing such constituents, which can be used according to the invention, can be found in US Pat.
- ETL coating agent (I) Coating layer in the baked state electrical conductivity components and in the case of the ETL coating agent (II) Color and / or effect pigments contained in the ETL coating agents (I) and (II) fillers and / or additives customary in paint contain.
- the usual pigments are used, for example inorganic and / or organic colored pigments and / or Effect pigments, e.g. Titanium dioxide, iron oxide pigments, Phthalocyanine pigments, quinacridone pigments, metal pigments, e.g. out Titanium, aluminum or copper, interference pigments, such as e.g.
- black pigments are coarse coal, generated by incomplete combustion carbon black, by catalytic or thermal decomposition of coarse particles obtained from liquid or gaseous hydrocarbons Soot.
- fillers are kaolin, talc or silicon dioxide.
- the pigments can be dispersed into pigment pastes, e.g. under Use of known paste resins.
- paste resins are known to the person skilled in the art common.
- paste resins that can be used in KTL baths are in EP-A-0 183 025 and EP-A-0 469 497.
- pigment pastes use as in the known to those skilled in the manufacture of Suitable for two-coat finishes of the basecoat / clearcoat type Waterborne basecoats are used.
- Such pigment pastes can are obtained by grinding the pigments in a special water-thinnable paste resin.
- An example of such preferred paste resin based on an anionic Stabilized polyurethane resin can be found in DE-A-40 00 889.
- additives are known for ETL coating agents.
- examples include wetting agents, Neutralizing agents, leveling agents, catalysts, Corrosion inhibitors, anti-foaming agents, solvents, in particular however, light protection agents if necessary in combination with Antioxidants.
- ETL coating agent (I) a KTL coating agent and as an ETL coating agent (II) an ATL coating agent to use.
- a clear coat for the production of the third and any additional coating layers are in principle all usual clear coats or transparent colored or colorless pigmented Coating agent suitable. It can be one or act multi-component clear lacquer coating agents. You can be solvent-free (liquid or as a powder clear coat), or it can are systems based on solvents or are are water-thinnable clear coats, whose binder systems in suitably, e.g. anionic, cationic or non-ionic, are stabilized. With the water-borne clear lacquer systems it can are water-soluble or water-dispersed systems, act, for example, emulsion systems or powder slurry systems. The Clear lacquer coating agents harden during baking under training covalent bonds due to chemical cross-linking.
- 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. You can if the base resins are not self-crosslinking, if necessary also Crosslinker included. Both the base resin component and the Crosslinker components are not subject to any restrictions.
- Film-forming binders (base resins) can, for example, be polyester, Polyurethane and / or (meth) acrylic copolymer resins can be used. The Selection of any crosslinker that is included is not critical to them depends on the functionality of the base resins, i.e. the crosslinker are selected so that they are one for the functionality of the base resins have complementary, reactive functionality.
- Complementary functionalities between base resin and crosslinker are: Carboxyl / epoxy, directly bound to carbon or silicon Hydroxyl / methylol ether, directly bound to carbon or silicon Hydroxyl / free and / or blocked isocyanate, (meth) acryloyl / CH-acidic Group.
- are directly bound to silicon Hydroxyl groups also latent silanol groups, e.g. Alkoxysilane groups to understand. If compatible with each other, can also combine several such complementary functionalities in one Clear varnish side by side.
- the possibly in the clear coats Crosslinkers used can be present individually or in a mixture.
- Examples of one (1K) and two-component (2K) non-aqueous Clear lacquer systems used as clear lacquer in the process according to the invention can be used can be found in DE-A-38 26 693, DE-A-40 17 075, DE-A-41 24 167, DE-A-41 33 704, DE-A-42 04 518, DE-A-42 04 611, EP-A-0 257 513, EP-A-0 408 858, EP-A-0 523 267, EP-A-0 557 822, WO-92 11 327.
- Examples of one (1K) or two-component (2K) Water-clear lacquer systems used as clear lacquer in the process according to the invention can be used can be found in DE-A-39 10 829, DE-A-40 09 931, DE-A-40 09 932, DE-A-41 01 696, DE-A-41 32 430, DE-A-41 34 290, DE-A-42 03 510, EP-A-0 365 098, EP-A-0 365 775, EP-A-0 496 079, EP-A-0 546 640.
- Powder clearcoat systems can be found in EP-A-0 509 392, EP-A-0 509 393, EP-A-0 522 648, EP-A-0 544 206, EP-A-0 555 705, DE-A-42 22 194, DE-A-42 27 580.
- the transparent coating can be in a single layer or in shape of multiple layers from the same or from several different transparent coating agents can be applied.
- a substrate for the method according to the invention are electrical conductive materials, such as metals. Particularly suitable are e.g. Automobile bodies or parts of them, them can be made of pretreated or untreated metal or electrical conductive or provided with an electrically conductive layer Plastic.
- the first coating layer is applied to these substrates from the aqueous coating agent (I) electrophoretically in a conventional manner in a dry layer thickness of, for example, 5 to 15 ⁇ m deposited and for example at temperatures between 130 and 180 ° C. branded.
- the second coating layer made of a second color and / or effect coating agent (II) which is different from (I) and which can be deposited electrophoretically is applied to the substrate thus obtained, which has an ETL layer having a specific resistance of in particular 10 3 to 10 8 ohm.cm. a dry layer thickness of, for example, 10 to 45 ⁇ m, preferably applied between 15 and 30 ⁇ m and likewise baked, for example, at temperatures between 130 and 180 ° C.
- the second coating layer generally has practically no electrical conductivity, ie it has a specific resistance of more than 10 9 ohm.cm in the baked state.
- the one obtained by electrodeposition from the coating agent (I) Coating serves in particular to protect against chemical and corrosive attack, so it is advantageous to try the whole Surface of a three-dimensional substrate, for example one To coat the body.
- the one obtained by electrodeposition from the coating agent (II) color and / or effect and in the baked state electrical Insulating coating can, but does not have to cover the entire surface extend across the three-dimensional substrate; a possible Accordingly, double coating is, for example, an entire surface first coating by electrocoating from the coating agent (I) and a color and / or effect coating from the Coating agent (II) by electrocoating, for example in essential only on outer areas, especially visible surfaces a three-dimensional substrate, i.e. for example not in narrow Cavities in a body.
- the third Coating layer is made from a common liquid or powder clear coat applied and for example at temperatures of 80 to 160 ° C. branded. If necessary, further layers of clear lacquer from the the same or different clear lacquer coating agents applied become. According to the invention is preferably carried out so that the Layer thickness of the transparent coating layer or the Total layer thickness of several transparent coating layers between 40 and 80 microns, particularly preferably between 50 and 60 microns.
- the method according to the invention allows the production of Multi-layer paintwork, in particular of automotive paintwork with comparable to the prior art Overall property level as well as improved gloss and top coat level. It has been shown that excellent properties through the Procedure according to the invention can be achieved, although the Elimination of filler layers enables.
- the high layer thickness at Clear coat application is the total layer thickness after the Multi-layer coatings produced according to the method of the invention low. They are in particular 80 to 110 ⁇ m and below comparable to the area of usual automotive OEM paintwork high clear coat thickness.
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
- Laminated Bodies (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Description
Claims (6)
- Verfahren zur Herstellung einer Mehrschichtlackierung, bei dem auf einem elektrisch leitfähigen Substrat eine Grundierung aus einem elektrophoretisch abscheidbaren wäßrigen Überzugsmittel (I) elektrophoretisch aufgetragen und anschließend eingebrannt wird, worauf eine farb- und/oder effektgebende Basislackschicht aus einem wäßrigen Überzugsmittel (II) aufgebracht und eingebrannt wird und diese mit einem oder mehreren Klarlacküberzügen versehen wird,
dadurch gekennzeichnet, daß mana) als Überzugsmittel (I) ein solches verwendet, das zu einer im eingebrannten Zustand elektrisch leitfähigen Grundierungsschicht führt,b) die Basislackschicht aus einem elektrophoretisch abscheidbaren wäßrigen Überzugsmittel (II) durch elektrophoretische Abscheidung gebildet wird,c) die Gesamttrockenschichtdicke der Klarlackschicht oder Klarlackschichten bei 40 bis 80µm liegt undd) die Gesamttrockenschichtdicke der Mehrschichtlackierung bei 80 bis 110 µm liegt. - Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Gesamttrockenschichtdicke der Klarlackschicht oder Klarlackschichten 50 bis 60 µm beträgt.
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß es zur Lackierung von Kraftfahrzeugen und Kraftfahrzeugteilen durchgeführt wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß als Überzugsmittel (II) zur Herstellung der Basislackschicht ein anodisch abscheidbares Überzugsmittel verwendet wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Grundierungsschicht in einer Trockenschichtdicke von 5 bis 15 µm und die Basislackschicht in einer Trockenschichtdicke von 10 bis 45 µm aufgetragen wird.
- Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Klarlackschicht oder die Klarlackschichten unter Verwendung eines Pulverlacks hergestellt werden.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19519667 | 1995-05-30 | ||
DE19519667A DE19519667C1 (de) | 1995-05-30 | 1995-05-30 | Verfahren zur Mehrschichtlackierung |
PCT/EP1996/002233 WO1996038234A1 (de) | 1995-05-30 | 1996-05-24 | Verfahren zur mehrschichtlackierung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0828568A1 EP0828568A1 (de) | 1998-03-18 |
EP0828568B1 true EP0828568B1 (de) | 1999-02-03 |
Family
ID=7763139
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96917417A Expired - Lifetime EP0828568B1 (de) | 1995-05-30 | 1996-05-24 | Verfahren zur mehrschichtlackierung |
Country Status (13)
Country | Link |
---|---|
US (1) | US5908667A (de) |
EP (1) | EP0828568B1 (de) |
JP (1) | JPH11505886A (de) |
KR (1) | KR100398465B1 (de) |
AT (1) | ATE176408T1 (de) |
BR (1) | BR9608599A (de) |
CA (1) | CA2222798A1 (de) |
DE (2) | DE19519667C1 (de) |
ES (1) | ES2129971T3 (de) |
MX (1) | MX9709223A (de) |
PL (1) | PL323599A1 (de) |
WO (1) | WO1996038234A1 (de) |
ZA (1) | ZA964395B (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6423425B1 (en) | 1998-05-26 | 2002-07-23 | Ppg Industries Ohio, Inc. | Article having a chip-resistant electrodeposited coating and a process for forming an electrodeposited coating |
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DE19643080C2 (de) * | 1995-10-18 | 2003-10-30 | Volkswagen Ag | Verfahren zum doppelten Beschichten einer Karosserie durch Elektrotauchlackierung |
DE19633173C1 (de) * | 1996-08-17 | 1997-10-02 | Herberts Gmbh | Verfahren zur Mehrschichtlackierung |
DE19648517A1 (de) * | 1996-11-23 | 1998-06-04 | Herberts & Co Gmbh | Verfahren zur Mehrschichtlackierung |
DE19733312A1 (de) * | 1997-08-01 | 1999-02-04 | Herberts Gmbh | Verfahren zur Aufbringung eines schützenden und dekorativen Schichtenverbundes |
DE19735540C1 (de) * | 1997-08-16 | 1999-04-01 | Basf Coatings Ag | Mit einem Mehrschichtüberzug versehenes Substrat und Verfahren zu dessen Herstellung |
US6248225B1 (en) | 1998-05-26 | 2001-06-19 | Ppg Industries Ohio, Inc. | Process for forming a two-coat electrodeposited composite coating the composite coating and chip resistant electrodeposited coating composition |
US6368719B1 (en) | 2000-06-12 | 2002-04-09 | E. I. Du Pont De Nemours And Company | Process for preparing multi-layer coatings on automotive bodies or automotive body parts |
US6676820B2 (en) * | 2001-03-02 | 2004-01-13 | Ppg Industries Ohio, Inc. | Process for electrocoating metal blanks and coiled metal substrates |
US6508922B2 (en) | 2001-05-10 | 2003-01-21 | E. I. Du Pont De Nemours And Company | Process for multi-layer coating |
DE10200994A1 (de) * | 2002-01-11 | 2003-07-31 | Eisenmann Kg Maschbau | Verfahren zum Lackieren von Werkstücken, insbesondere von Fahrzeugkarosserien |
ES2356816T3 (es) * | 2002-04-03 | 2011-04-13 | Masonite Corporation | Método y aparato para crear una imagen sobre un artículo, y artículo impreso. |
US20040118695A1 (en) * | 2002-08-29 | 2004-06-24 | Ding-Yu Chung | Two-coat electrocoating process |
US20050250415A1 (en) * | 2004-04-23 | 2005-11-10 | Barthold Mark J | Toy and card package |
US20050250416A1 (en) * | 2004-04-23 | 2005-11-10 | Barthold Mark J | Toy and card package |
US20060076735A1 (en) * | 2004-10-08 | 2006-04-13 | Nathan Proch | Wheel having a translucent aspect |
US20060079150A1 (en) * | 2004-10-08 | 2006-04-13 | Miva Filoseta | Toy for collecting and dispersing toy vehicles |
US20060078684A1 (en) * | 2004-10-08 | 2006-04-13 | Neo Tian B | Paint process for toys |
US20060079149A1 (en) * | 2004-10-08 | 2006-04-13 | Nathan Proch | Cut-out logo display |
US7959981B2 (en) * | 2007-08-27 | 2011-06-14 | Ppg Industries Ohio, Inc. | Process for depositing multiple coatings layers on a substrate |
EP2714967B1 (de) * | 2011-05-23 | 2023-02-15 | Axalta Coating Systems GmbH | Antikorrosive elektrobeschichtung |
US20130146460A1 (en) * | 2011-12-13 | 2013-06-13 | Ppg Industries Ohio, Inc. | Resin based post rinse for improved throwpower of electrodepositable coating compositions on pretreated metal substrates |
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US3674671A (en) * | 1969-02-26 | 1972-07-04 | Textron Inc | Electrodeposition method and product |
JPS5814266B2 (ja) * | 1975-12-19 | 1983-03-18 | 三井東圧化学株式会社 | メタリツクチヨウトマクノケイセイホウホウ |
JPS5951958A (ja) * | 1982-09-18 | 1984-03-26 | Nippon Paint Co Ltd | カチオン型電着塗料組成物 |
DE3447257A1 (de) * | 1984-12-22 | 1986-06-26 | Basf Farben + Fasern Ag, 2000 Hamburg | Verfahren zur mehrschichtigen kathodischen nass-in-nasslackierung von metallisch leitfaehigen substraten |
US4755418A (en) * | 1985-08-12 | 1988-07-05 | Basf Corporation | Nonyellowing cathodic electrocoat |
DE3538792C1 (de) * | 1985-10-31 | 1987-05-07 | Basf Lacke & Farben | Elektrophoretisch ueberbeschichtbare im Elektrotauchlackierverfahren aufgebrachte UEberzuege |
JP2614468B2 (ja) * | 1987-11-26 | 1997-05-28 | 関西ペイント株式会社 | 上塗り塗装仕上げ方法 |
US4911811A (en) * | 1988-07-14 | 1990-03-27 | The Stanley Works | Method of making coated articles with metallic appearance |
JPH0312263A (ja) * | 1989-06-12 | 1991-01-21 | Nissan Motor Co Ltd | うるし調塗膜の形成方法 |
JP2802397B2 (ja) * | 1989-10-30 | 1998-09-24 | 神東塗料株式会社 | 電着型被膜形成組成物及び塗装法 |
DE4005961A1 (de) * | 1990-02-26 | 1991-08-29 | Basf Lacke & Farben | Verfahren zur lackierung von fahrzeugkarosserien und waessrige lacke |
DE4011633A1 (de) * | 1990-04-11 | 1991-10-17 | Herberts Gmbh | Verfahren zur herstellung von mehrschichtueberzuegen |
US5114756A (en) * | 1990-04-27 | 1992-05-19 | E. I. Du Pont De Nemours And Company | Conductive epoxypolyamide coating composition |
DE4134290A1 (de) * | 1991-10-17 | 1993-09-23 | Herberts Gmbh | Verfahren zur mehrschichtlackierung |
US5203975A (en) * | 1991-10-29 | 1993-04-20 | E. I. Du Pont De Nemours And Company | Process for cathodic electrodeposition of a clear coating over a conductive paint layer |
US5326596A (en) * | 1991-12-19 | 1994-07-05 | Kansai Paint Company, Ltd. | Coating method |
DE4215070A1 (de) * | 1992-05-07 | 1993-11-11 | Herberts Gmbh | Verfahren zur Herstellung von Mehrschichtlackierungen |
DE4235778A1 (de) * | 1992-10-23 | 1994-04-28 | Herberts Gmbh | Verfahren zur Herstellung von Mehrschichtlackierungen |
DE4331673A1 (de) * | 1993-09-17 | 1995-05-11 | Herberts Gmbh | Verfahren zur Herstellung von Mehrschichtlackierungen |
-
1995
- 1995-05-30 DE DE19519667A patent/DE19519667C1/de not_active Expired - Lifetime
-
1996
- 1996-05-24 CA CA002222798A patent/CA2222798A1/en not_active Abandoned
- 1996-05-24 BR BR9608599A patent/BR9608599A/pt not_active IP Right Cessation
- 1996-05-24 ES ES96917417T patent/ES2129971T3/es not_active Expired - Lifetime
- 1996-05-24 DE DE59601270T patent/DE59601270D1/de not_active Expired - Fee Related
- 1996-05-24 MX MX9709223A patent/MX9709223A/es not_active IP Right Cessation
- 1996-05-24 JP JP8536161A patent/JPH11505886A/ja active Pending
- 1996-05-24 EP EP96917417A patent/EP0828568B1/de not_active Expired - Lifetime
- 1996-05-24 AT AT96917417T patent/ATE176408T1/de not_active IP Right Cessation
- 1996-05-24 US US08/952,684 patent/US5908667A/en not_active Expired - Fee Related
- 1996-05-24 WO PCT/EP1996/002233 patent/WO1996038234A1/de active IP Right Grant
- 1996-05-24 PL PL96323599A patent/PL323599A1/xx unknown
- 1996-05-24 KR KR1019970708570A patent/KR100398465B1/ko not_active IP Right Cessation
- 1996-05-29 ZA ZA964395A patent/ZA964395B/xx unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6423425B1 (en) | 1998-05-26 | 2002-07-23 | Ppg Industries Ohio, Inc. | Article having a chip-resistant electrodeposited coating and a process for forming an electrodeposited coating |
Also Published As
Publication number | Publication date |
---|---|
ES2129971T3 (es) | 1999-06-16 |
MX9709223A (es) | 1998-03-31 |
JPH11505886A (ja) | 1999-05-25 |
ATE176408T1 (de) | 1999-02-15 |
PL323599A1 (en) | 1998-04-14 |
ZA964395B (en) | 1996-12-09 |
KR100398465B1 (ko) | 2004-01-28 |
US5908667A (en) | 1999-06-01 |
DE19519667C1 (de) | 1997-02-06 |
EP0828568A1 (de) | 1998-03-18 |
BR9608599A (pt) | 1999-01-05 |
WO1996038234A1 (de) | 1996-12-05 |
CA2222798A1 (en) | 1996-12-05 |
DE59601270D1 (de) | 1999-03-18 |
KR19990022091A (ko) | 1999-03-25 |
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