EP1289680A1 - Bandbeschichtungsverfahren mit pulverlackdispersionen (pulverslurries) - Google Patents
Bandbeschichtungsverfahren mit pulverlackdispersionen (pulverslurries)Info
- Publication number
- EP1289680A1 EP1289680A1 EP01951542A EP01951542A EP1289680A1 EP 1289680 A1 EP1289680 A1 EP 1289680A1 EP 01951542 A EP01951542 A EP 01951542A EP 01951542 A EP01951542 A EP 01951542A EP 1289680 A1 EP1289680 A1 EP 1289680A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- powder
- layer
- coating
- powder slurry
- slurries
- 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- Withdrawn
Links
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- IZSHZLKNFQAAKX-UHFFFAOYSA-N 5-cyclopenta-2,4-dien-1-ylcyclopenta-1,3-diene Chemical group C1=CC=CC1C1C=CC=C1 IZSHZLKNFQAAKX-UHFFFAOYSA-N 0.000 description 3
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- 239000003995 emulsifying agent Substances 0.000 description 3
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- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 239000003999 initiator Substances 0.000 description 3
- 125000000555 isopropenyl group Chemical group [H]\C([H])=C(\*)C([H])([H])[H] 0.000 description 3
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- 229920002125 Sokalan® Polymers 0.000 description 1
- 229920000147 Styrene maleic anhydride Polymers 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric Acid Chemical compound [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 238000006887 Ullmann reaction Methods 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical compound C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 1
- YIMQCDZDWXUDCA-UHFFFAOYSA-N [4-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1CCC(CO)CC1 YIMQCDZDWXUDCA-UHFFFAOYSA-N 0.000 description 1
- CKUAXEQHGKSLHN-UHFFFAOYSA-N [C].[N] Chemical compound [C].[N] CKUAXEQHGKSLHN-UHFFFAOYSA-N 0.000 description 1
- JXBAVRIYDKLCOE-UHFFFAOYSA-N [C].[P] Chemical compound [C].[P] JXBAVRIYDKLCOE-UHFFFAOYSA-N 0.000 description 1
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 description 1
- LBKOBSXMPMKAKL-UHFFFAOYSA-N [Li].[F].[Na].[Mg] Chemical compound [Li].[F].[Na].[Mg] LBKOBSXMPMKAKL-UHFFFAOYSA-N 0.000 description 1
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- BZPUUPVCWNNZKW-UHFFFAOYSA-M acetic acid;tetrabutylphosphanium;acetate Chemical compound CC(O)=O.CC([O-])=O.CCCC[P+](CCCC)(CCCC)CCCC BZPUUPVCWNNZKW-UHFFFAOYSA-M 0.000 description 1
- YBCVMFKXIKNREZ-UHFFFAOYSA-N acoh acetic acid Chemical compound CC(O)=O.CC(O)=O YBCVMFKXIKNREZ-UHFFFAOYSA-N 0.000 description 1
- 125000002015 acyclic group Chemical group 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000002318 adhesion promoter Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 125000004466 alkoxycarbonylamino group Chemical group 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 229920003180 amino resin Polymers 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 125000000129 anionic group Chemical group 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 150000001565 benzotriazoles Chemical class 0.000 description 1
- 239000001055 blue pigment Substances 0.000 description 1
- SKKTUOZKZKCGTB-UHFFFAOYSA-N butyl carbamate Chemical compound CCCCOC(N)=O SKKTUOZKZKCGTB-UHFFFAOYSA-N 0.000 description 1
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical class [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 1
- 235000011132 calcium sulphate Nutrition 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- CREMABGTGYGIQB-UHFFFAOYSA-N carbon carbon Chemical compound C.C CREMABGTGYGIQB-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 238000003889 chemical engineering Methods 0.000 description 1
- 229940114081 cinnamate Drugs 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 125000000753 cycloalkyl group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 239000000412 dendrimer Substances 0.000 description 1
- 229920000736 dendritic polymer Polymers 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- 239000012975 dibutyltin dilaurate Substances 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- GELSOTNVVKOYAW-UHFFFAOYSA-N ethyl(triphenyl)phosphanium Chemical compound C=1C=CC=CC=1[P+](C=1C=CC=CC=1)(CC)C1=CC=CC=C1 GELSOTNVVKOYAW-UHFFFAOYSA-N 0.000 description 1
- NJXBVBPTDHBAID-UHFFFAOYSA-M ethyl(triphenyl)phosphanium;chloride Chemical compound [Cl-].C=1C=CC=CC=1[P+](C=1C=CC=CC=1)(CC)C1=CC=CC=C1 NJXBVBPTDHBAID-UHFFFAOYSA-M 0.000 description 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 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
- 239000003063 flame retardant Substances 0.000 description 1
- 235000013312 flour Nutrition 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005227 gel permeation chromatography Methods 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- VOZRXNHHFUQHIL-UHFFFAOYSA-N glycidyl methacrylate Chemical compound CC(=C)C(=O)OCC1CO1 VOZRXNHHFUQHIL-UHFFFAOYSA-N 0.000 description 1
- 150000004820 halides Chemical class 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
- 150000002429 hydrazines Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 150000002432 hydroperoxides Chemical class 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 125000005350 hydroxycycloalkyl group Chemical group 0.000 description 1
- 150000002460 imidazoles Chemical class 0.000 description 1
- 125000001841 imino group Chemical group [H]N=* 0.000 description 1
- FCXSGAKSWAEXPU-UHFFFAOYSA-N iminocarbamic acid Chemical compound OC(=O)N=N FCXSGAKSWAEXPU-UHFFFAOYSA-N 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000000976 ink Substances 0.000 description 1
- 150000002484 inorganic compounds Chemical class 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229940079865 intestinal antiinfectives imidazole derivative Drugs 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- WARQUFORVQESFF-UHFFFAOYSA-N isocyanatoethene Chemical compound C=CN=C=O WARQUFORVQESFF-UHFFFAOYSA-N 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
- 150000002576 ketones Chemical class 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- POYDCAKGHSRECA-UHFFFAOYSA-M lithium;decanoate Chemical compound [Li+].CCCCCCCCCC([O-])=O POYDCAKGHSRECA-UHFFFAOYSA-M 0.000 description 1
- NEMFQSKAPLGFIP-UHFFFAOYSA-N magnesiosodium Chemical compound [Na].[Mg] NEMFQSKAPLGFIP-UHFFFAOYSA-N 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 150000007974 melamines Chemical class 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- CSJDCSCTVDEHRN-UHFFFAOYSA-N methane;molecular oxygen Chemical compound C.O=O CSJDCSCTVDEHRN-UHFFFAOYSA-N 0.000 description 1
- 125000004184 methoxymethyl group Chemical group [H]C([H])([H])OC([H])([H])* 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- FTWUXYZHDFCGSV-UHFFFAOYSA-N n,n'-diphenyloxamide Chemical class C=1C=CC=CC=1NC(=O)C(=O)NC1=CC=CC=C1 FTWUXYZHDFCGSV-UHFFFAOYSA-N 0.000 description 1
- OTLDLKLSNZMTTA-UHFFFAOYSA-N octahydro-1h-4,7-methanoindene-1,5-diyldimethanol Chemical compound C1C2C3C(CO)CCC3C1C(CO)C2 OTLDLKLSNZMTTA-UHFFFAOYSA-N 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 150000001451 organic peroxides Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- AQSJGOWTSHOLKH-UHFFFAOYSA-N phosphite(3-) Chemical class [O-]P([O-])[O-] AQSJGOWTSHOLKH-UHFFFAOYSA-N 0.000 description 1
- 150000003009 phosphonic acids Chemical class 0.000 description 1
- XYFCBTPGUUZFHI-UHFFFAOYSA-O phosphonium Chemical compound [PH4+] XYFCBTPGUUZFHI-UHFFFAOYSA-O 0.000 description 1
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 150000003018 phosphorus compounds Chemical class 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920001748 polybutylene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 229920001228 polyisocyanate Polymers 0.000 description 1
- 239000005056 polyisocyanate Substances 0.000 description 1
- 229920001195 polyisoprene Polymers 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 229920001289 polyvinyl ether Polymers 0.000 description 1
- 229920001291 polyvinyl halide Polymers 0.000 description 1
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 1
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 1
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 150000003141 primary amines Chemical class 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 150000003856 quaternary ammonium compounds Chemical class 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000003678 scratch resistant effect Effects 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000001384 succinic acid Substances 0.000 description 1
- 125000000446 sulfanediyl group Chemical group *S* 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- RKHXQBLJXBGEKF-UHFFFAOYSA-M tetrabutylphosphanium;bromide Chemical compound [Br-].CCCC[P+](CCCC)(CCCC)CCCC RKHXQBLJXBGEKF-UHFFFAOYSA-M 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- 238000001029 thermal curing Methods 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
- JOUDBUYBGJYFFP-FOCLMDBBSA-N thioindigo Chemical compound S\1C2=CC=CC=C2C(=O)C/1=C1/C(=O)C2=CC=CC=C2S1 JOUDBUYBGJYFFP-FOCLMDBBSA-N 0.000 description 1
- WBYWAXJHAXSJNI-VOTSOKGWSA-M trans-cinnamate Chemical compound [O-]C(=O)\C=C\C1=CC=CC=C1 WBYWAXJHAXSJNI-VOTSOKGWSA-M 0.000 description 1
- 239000003981 vehicle Substances 0.000 description 1
- 229920001567 vinyl ester resin Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000004924 water-based lacquer Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
- CHJMFFKHPHCQIJ-UHFFFAOYSA-L zinc;octanoate Chemical compound [Zn+2].CCCCCCCC([O-])=O.CCCCCCCC([O-])=O CHJMFFKHPHCQIJ-UHFFFAOYSA-L 0.000 description 1
- PAPBSGBWRJIAAV-UHFFFAOYSA-N ε-Caprolactone Chemical compound O=C1CCCCCO1 PAPBSGBWRJIAAV-UHFFFAOYSA-N 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
- B05D3/0272—After-treatment with ovens
-
- 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
- B05D2202/00—Metallic substrate
-
- 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
- B05D2252/00—Sheets
- B05D2252/02—Sheets of indefinite length
-
- 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
- B05D2401/00—Form of the coating product, e.g. solution, water dispersion, powders or the like
- B05D2401/20—Aqueous dispersion or solution
-
- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0209—Multistage baking
-
- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
-
- 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
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/06—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to radiation
Definitions
- the present invention relates to a new tape coating process which is carried out using powder coating dispersions.
- Coil coating or coil coating is understood to mean a special form of roll coating (Römpp Lexikon Lacke und Druckmaschine, Georg Thieme Verlag, Stuttgart, New York, 1998, page 617, "Roll coating") and occasionally the spray and pour coating of metal strips with liquid coatings is a continuous process, ie all work processes such as cleaning, pretreatment, painting and hardening etc. are carried out in one operation in one system.
- the coil coating comprises the following schematic steps: After cleaning and degreasing the belt, a multi-stage chemical pretreatment is carried out Subsequent passivation, rinsing and drying. After cooling, the liquid coating material is applied on one or both sides with two or three rollers, usually using the reverse roller coating method.
- the applied layer is thermally hardened at temper atures from 180 to 260 ° C for 20 to 60 s.
- application and curing are repeated.
- the speeds of coil coating systems are up to 250 m / min (Römpp Lexikon Lacke und Druckmaschine, Georg Thieme Verlag, Stuttgart, New York, 1998, page 55, "Belt Coating").
- liquid lacquers previously used for coil coating lead to considerable emissions of organic solvents, which is no longer economically and ecologically justifiable.
- coil coating with powder coatings has the disadvantage that special application systems, such as electrostatic powder spraying systems, have to be used for slowly running belts or so-called “powder cloud chambers” for fast-running belts.
- the object of the present invention is to find a new coil coating process which no longer has the disadvantages of the prior art, but rather combines the advantages of coil coating with liquid lacquers on the one hand and the advantages of coil coating with powder coatings on the other hand and also without the emission of organic solvents in the case of thin layer thicknesses, non-porous coatings with excellent adhesion to the tape, excellent intermediate adhesion, very good optical and mechanical properties and especially excellent ductility.
- the new coil coating process was found in which a metal strip is continuously coated on one or two sides with at least one lacquer, after which the applied lacquer layer (s) is cured, at least one of the lacquers containing a pigmented or unpigmented powder coating dispersion (powder slurry). and the applied powder slurry layer (s) are heated in such a way that
- (Iii) are cured thermally and / or with actinic radiation, whereby at least one kiar coating and / or at least one color and / or effect coating is obtained.
- the new band coating process is referred to as the "process according to the invention".
- the term “coloring and / or effect coating” includes both achromatic (cf. cf. Römpp Lexikon Lacke und Druckmaschine, Georg Thieme Verlag, 1998, page 590, “achromatic dot”) as well as colorful, ie colored, coating systems.
- the process according to the invention is based on a metal strip which has been cleaned, degreased, passivated, chemically treated, rinsed and dried in a customary and known manner and, if appropriate, provided on one or two sides with at least one layer of paint or a primer or at least one or more layers of paint.
- All metals from which tapes can be formed that are able to withstand the mechanical, chemical and thermal stresses of the tape coating are suitable.
- Metal strips based on aluminum or iron are particularly suitable. In the case of iron, cold-rolled steels, electrolytically galvanized steels, hot-dip galvanized steels or stainless steels are particularly suitable. The strips are preferably 200 ⁇ m to 2 mm thick.
- the metal strip passes through a strip coating system, such as that e.g. in Römpp Lexikon Lacke und Druckmaschine, Georg Thieme Verlag, Stuttgart, New York, 1998, page 55, "coil coating", or in the German patent application DE 196 32426 A 1, at a speed which corresponds to the application and curing properties of the The speed can vary very widely from coating process to coating process, preferably from 10 to 150, preferably 12 to 120, particularly preferably 14 to 100, very particularly preferably 16 to 80 and in particular 20 to 70 nVmin.
- Each roller coating application step can be carried out with several rollers. Preferably two to four and in particular two rollers are used.
- the rotating pick-up roller is immersed in a powder powder supply and thus takes over the powder slurry to be applied. This is transferred from the pick-up roller directly or via at least one transfer roller to the rotating application roller. From there, the powder slurry is transferred to the belt by stripping in the same direction or in opposite directions.
- the opposite wiping or the reverse roller coating method is advantageous and is therefore used with preference.
- the circulation speeds of the pick-up roller and the application roller can vary very greatly from coating process to coating process.
- the application roller has an orbital speed which is 110 to 125% of the belt speed
- the take-up roller has an orbital speed which is 20 to 40% of the belt speed.
- the powder slurries are preferably applied in a wet layer thickness such that, after the powder slurry layers have hardened, clearcoats and / or color and / or effect coatings with a dry layer thickness of 5 to 100, preferably 6 to 80, particularly preferably 8 to 70, very particularly preferably 10 to 60 and in particular 12 to 50 ⁇ m result.
- the application methods described above can be applied to the other paints that may be used, unless they are powder paints in which the application methods mentioned at the beginning have to be used.
- suitable other lacquers are customary and known pigmented and unpigmented lacquers such as primers based on polyester and or epoxy, basecoats, in particular water-based lacquers based on polyurethane, and / or clear lacquers such as aqueous and non-aqueous one-component clearcoats or two- or multi-component clearcoats.
- Suitable coatings produced from this are primer coatings, color and / or effect basecoats or clearcoats.
- the powder slurry or the powder slurries are preferred
- the hardened or non-hardened powder slurry layer (s) is covered with at least one lacquer, after which the resulting ⁇ ) Lacquer layer (s) hardens alone or together with the powder slurry layer (s).
- (Iii) are cured thermally and / or with actinic radiation, whereby at least one clear coat and / or at least one color and / or effect coating is obtained.
- This is implemented by a predetermined temperature program which is adapted to the drying speed, the melting range and, if appropriate, the temperature range of the hardening of the powder slurry used in each case. These parameters are primarily dependent on the material composition of the powder slurry.
- the temperature program can therefore vary very widely from powder slurry to powder slurry, but it can easily be derived by a person skilled in the art on the basis of the known relationships between material composition and the parameters mentioned.
- the heating can take place by convection heat transfer, irradiation with near or far infrared and / or in the case of tapes based on iron by electrical induction.
- the maximum object temperature is preferably 250 ° C.
- the heating time ie the duration of the thermal curing, varies depending on the powder slurry used. It is preferably from 35 s to 2 min.
- uni Kunststoff ovens with a length of 30 to 50, in particular 35 to 45 m, are required at the preferred belt running speeds.
- the thermal hardening of the powder slurries can also be supported by irradiation with actinic radiation.
- the curing can, however, also be carried out using actinic radiation alone, as is described, for example, in German patent application DE 198 35 206 A1.
- actinic radiation means electromagnetic radiation, such as near infrared (NIR), visible light, UV radiation or X-rays, in particular UV radiation, and corpuscular radiation such as electron beams.
- NIR near infrared
- UV radiation visible light
- UV radiation UV radiation
- X-rays UV radiation
- corpuscular radiation such as electron beams.
- a dose of 1,000 to 3,000, preferably 1,100 to 2,900, particularly preferably 1,200 to 2,800, very particularly preferably 1,300 to 2,700 and in particular 1,400 to 2,600 mJ / cm 2 is preferably used.
- this hardening can be supplemented with actinic radiation from other radiation sources.
- work is preferably carried out under an inert gas atmosphere.
- inert gas atmosphere For example can be guaranteed by supplying carbon dioxide and / or nitrogen directly to the surface of the powder slurry layer.
- inert gas it is also possible to work under inert gas in order to avoid the formation of ozone.
- the usual and known radiation sources and optical auxiliary measures are used for curing with actinic radiation.
- suitable radiation sources are flash lamps from VISIT, high-pressure or low-pressure mercury vapor lamps, which may be doped with lead to open a radiation window up to 405 nm, or electron beam sources.
- flash lamps from VISIT high-pressure or low-pressure mercury vapor lamps, which may be doped with lead to open a radiation window up to 405 nm, or electron beam sources.
- Their arrangement is known in principle and can be adapted to the conditions of the workpiece and the process parameters.
- coated strips After the coated strips have been produced by the process according to the invention, they can be wound into coated coils and then processed further at another location; however, they can also be processed directly from the coil coating. They can be laminated with plastics or provided with removable protective films. After being crushed into parts of a suitable size, they can be shaped become. Examples of suitable shaping processing methods are pressing and deep drawing.
- the resulting molded parts are scratch-resistant, corrosion-resistant, weather-resistant and chemical-stable and have an extremely good optical appearance
- Ceiling and wall elements doors, gates, pipe insulation, roller shutters or window profiles are suitable.
- Both the pigmented powder slurry and the powder slurry clear coat (unpigmented powder slurry) used in the inventive method described above contain at least one finely divided dimensionally stable component, i.e. a powder coating, as a disperse phase and an aqueous medium as a continuous phase.
- the finely divided dimensionally stable component or the powder coating can be solid and / or highly viscous.
- “highly viscous” means that the particles are preserved essentially like solid particles under the customary and known conditions for producing, storing and using powder slurries or powder coatings.
- the powder coating is preferably solid.
- the individual particles of the finely divided component or powder coating are also dimensionally stable.
- "dimensionally stable” means that the particles agglomerate only slightly, if at all, and / or disintegrate into smaller particles under the customary and known conditions of storage and use of powder slurries and powder coatings, but also under the influence of shear forces essentially maintain their original shape.
- the solids content of the pigmented powder slurries and the powder slurry clearcoats is preferably 10 to 80, preferably 15 to 75, particularly preferably 20 to 70, very particularly preferably 25 to 70 and in particular 30 to 65% by weight, in each case based on the pigmented powder slurry or the powder slurry clearcoat.
- Powder slurry clearcoats at 0.8 to 40 ⁇ m, preferably 0.8 to 20 ⁇ m, and particularly preferably at 2 to 6 ⁇ m.
- the average particle size is the after
- Laser diffraction method understood 50% median understood, i.e. 50% of the
- Particles have a particle diameter ⁇ the median and 50% of the particles have a particle diameter> the median. Generally, the
- Particle sizes have a better application behavior and show with the applied film thicknesses of> 30 ⁇ m, as currently in the automotive industry are practiced in the initial painting of automobiles, surprisingly a significantly lower tendency to stoves and "mud cracking" than conventional combinations of filler, basecoat and clearcoat.
- the pigmented powder slurries and powder slurry clear coats are preferably free of organic solvents (cosolvents).
- solvents organic solvents
- the pigmented powder slurries and powder slurry clearcoats can be curable physically or thermally and / or with actinic radiation.
- the thermally curable powder slurries in turn can be self-crosslinking or externally crosslinking.
- the pigmented powder slurries and the powder slurry clear coats contain at least one binder.
- the binders are oligomeric and polymeric resins.
- the minimum formation temperature of the binders is at least 0 ° C., preferably at least 10, particularly preferably at least 15, very particularly preferably at least 20 and in particular at least 25 ° C.
- the minimum film-forming temperature can be determined by drawing an aqueous dispersion of the binder onto a glass plate using a doctor blade or applying a finely divided binder powder to a glass plate and heating it in a gradient oven.
- the temperature at which the powdery layer films is referred to as the minimum film-forming temperature.
- the Römpp Lexicon Varnishes and Printing Inks Georg Thieme Verlag, Stuttgart, New York, 1998, "Mmdestfilm soft Temperatur", page 391.
- Suitable binders are random, alternating and / or block-like linear and / or branched and / or comb-like (co) polymers of ethylenically unsaturated monomers, or polyaddition resins and / or polycondensation resins. These terms are supplemented by Römpp Lexikon Lacke und Druckmaschine, Georg Thieme Verlag, Stuttgart, New York, 1998, page 457, "Polyaddition” and “Polyadditionharze (polyadducts)", and pages 463 and 464, "Polycondensates”, “Polycondensation” and “Polycondensation Resins", as well as pages 73 and 74, "Binders".
- suitable (co) polymers are (meth) acrylate (co) polymers or partially saponified polyvinyl esters, in particular (meth) acrylate copolymers.
- suitable polyaddition resins and / or polycondensation resins are polyesters, alkyds, polyurethanes, polylactones, polycarbonates, polyethers, epoxy oxyarine-amine adducts, polyureas, polyamides, polyimides, polyester-polyurethanes, polyether-polyurethanes or polyester-polyether-polyurethanes, in particular polyester-polyurethanes ,
- the (meth) acrylate (co) polymers have advantages and are therefore frequently used.
- the self-crosslinking binders of the thermally curable powder slurries and the dual-cure powder slurries contain reactive functional groups which can undergo crosslinking reactions with groups of their type or with complementary reactive fractional groups.
- the externally crosslinking binders contain reactive functional groups that are complementary with reactive functional groups which are present in crosslinking agents can undergo crosslinking reactions (cf. also Römpp Lexikon Lacke und Druckmaschine, Georg Thieme Verlag, Stuttgart, New York, 1998, "Hardening", pages 274 to 276, in particular page 275). Examples of suitable complementary reactive functional groups to be used according to the invention are summarized in the following overview.
- variable R stands for an acyclic or cyclic aliphatic, an aromatic and / or an aromatic-aliphatic (araliphatic) radical; the variables R and R stand for the same or different aliphatic radicals or are linked to one another to form an aliphatic or heteroaliphatic ring.
- the selection of the respective complementary groups depends on the one hand on the fact that they do not undergo any undesirable reactions, in particular no premature crosslinking, during the production, storage, application and melting of the powder slurries according to the invention and / or do not interfere with the curing with actinic radiation, if appropriate or inhibit, and on the other hand in which temperature range the crosslinking should take place.
- Crosslinking temperatures of up to 250 ° C. are preferably used for the pigmented powder slurries and the powder slurry clearcoats.
- thio, hydroxyl, N-methylolarnino, NA & oxymemylamino, imino, carbamate, allophanate and / or carboxyl groups preferably hydroxyl or carboxyl groups, on the one hand, and preferably crosslinking agents with anhydride, carboxyl, epoxy, blocked isocyanate, urethane, methylol, methylol ether, siloxane, carbonate, amino, hydroxy and / or beta-hydroxyalkylamide groups, preferably epoxy, beta-hydroxyalkylamide, blocked isocyanate, urethane or allcoxymemylamino groups, on the other hand applied.
- the binders contain, in particular, methylol, methylol ether and / or N-alkoxymemylamino groups.
- the functionality of the binders with respect to the reactive functional groups described above can vary very widely and depends in particular on the crosslinking density that is to be achieved and / or on the functionality of the crosslinking agent used in each case.
- the acid number is preferably 10 to 100, preferably 15 to 80, particularly preferably 20 to 75, very particularly preferably 25 to 70 and in particular 30 to 65 mg KOH / g.
- the OH number is preferably 15 to 300, preferably 20 to 250, particularly preferably 25 to 200, very particularly preferably 30 to 150 and in particular 35 to 120 mg KOH / g.
- the epoxy equivalent weight is preferably 400 to 2,500, preferably 420 to 2,200, particularly preferably 430 to 2,100, very particularly preferably 440 to 2,000 and in particular 440 to 1,900.
- the complementary functional groups described above can be incorporated into the binders by the customary and known methods of polymer chemistry. This can be done, for example, by incorporating monomers which carry the corresponding reactive functional groups and / or using polymer-analogous reactions.
- Carboxylic acid with an alkylene oxide such as ethylene oxide or propylene oxide are available, in particular hydroxyalkyl esters of acrylic acid, methacrylic acid, ethacrylic acid, crotonic acid, maleic acid, fumaric acid or itaconic acid, in which the hydroxyalkyl group contains up to 20 carbon atoms, such as 2- Hydroxyethyl, 2-hydroxypropyl, 3-hydroxypropyl, 3-hydroxybutyl, 4-hydroxybutyl acrylate, methacrylate, ethacrylate, crotonate, maleate, fumarate or itaconate; or hydroxycycloalkyl esters such as 1,4-bis (hydroxymethyl) cyclohexane, octahydro-4,7-memano-1H-mden-dimethanol- or
- olefinically unsaturated alcohols such as allyl alcohol
- Polyols such as trimethylolpropane mono- or diallyl ether or pentaerythritol mono-, di- or triallyl ether;
- (Meth) acrylic acid amides such as (meth) acrylic acid amide, N-methyl-, N-methylol-, N, N-dimethylol-, N-methoxymethyl-, N, N-
- Acrylic acid methacrylic acid, ethacrylic acid, crotonic acid, maleic acid, fumaric acid or itaconic acid;
- Vinylbenzoic acid (all isomers), alpha-methylvinylbenzoic acid (all isomers) or vinylbenzenesulfonic acid (all isomers).
- (a3) Monomers containing epoxy groups, such as the glycidyl ester of acrylic acid, methacrylic acid, efhacrylic acid, crotonic acid, maleic acid, fumaric acid or itaconic acid or allyl glycidyl ether.
- (meth) acrylate copolymers are preferably used for the production of (meth) acrylate copolymers, in particular those containing glycidyl groups.
- suitable monomer units for introducing reactive functional groups into polyester or polyester polyurethanes are 2,2-dimethylolethyl- or propylamine, which are blocked with a ketone, the resulting ketoxime group being hydrolyzed again after incorporation; or compounds which contain two hydroxyl groups or two primary and / or secondary amino groups and at least one acid group, in particular at least one carboxyl group and / or at least one sulfonic acid group, such as dihydroxypropionic acid, dihydroxysuccinic acid, dihydroxybenzoic acid, 2,2-dimethylolacetic acid, 2,2-dimethylolpropionic acid , 2,2-dimethylolbutyric acid, 2,2-dimenthylolpentanoic acid, ###, ### - diaminovaleric acid, 3,4-
- Dia rnobenzoic acid, 2,4-diarninotoluenesulfonic acid or 2,4-diarninodiphenyl ether sulfonic acid is a compound that has a low degree of rnobenzoic acid.
- the binders of the dual-cure powder slurries and the powder slurries curable purely with actinic radiation furthermore contain, on average, at least one, preferably at least two, group (s) with at least one bond which can be activated with actinic radiation per molecule.
- a bond which can be activated with actinic radiation is understood to mean a bond which becomes reactive when irradiated with actinic radiation and which undergoes polymerization reactions and / or crosslinking reactions with other activated bonds of its type which take place according to radical and / or ionic mechanisms.
- suitable bonds are carbon-hydrogen single bonds or carbon-carbon, carbon-oxygen, carbon-nitrogen, carbon-phosphorus or carbon-silicon single bonds or double bonds.
- the carbon-carbon double bonds are particularly advantageous and are therefore used with very particular preference in accordance with the invention. For the sake of brevity, they are referred to below as "double bonds".
- the group preferred according to the invention contains one double bond or two, three or four double bonds. If more than one double bond is used, the double bonds can be conjugated. According to the invention, however, it is advantageous if the double bonds are isolated, in particular each individually in the group in question here. According to the invention it is particularly advantageous to use two, in particular one, double bond.
- the dual-cure binders and the binders curable with actinic radiation contain on average at least one of the groups described above which can be activated with actinic radiation.
- the functionality of the binders in this respect is an integer, that is, for example, two, three, four, five or more, or is not an integer, that is, for example, 2.1 to 10.5 or more. Which functionality is chosen depends on the requirements that are imposed on the respective dual-cure powder slurry or the respective powder slurry curable with actinic radiation. , (
- the groups are structurally different from one another or of the same structure.
- Suitable groups are (meth) acrylate, ethacrylate, crotonate, cinnamate, vinyl ether, vinyl ester, dicyclopentadienyl, norbornenyl, isoprenyl, isopropenyl, allyl or butenyl groups; Dicyclopentadienyl, norbornenyl, isoprenyl, isopropenyl, allyl or butenyl ether groups or dicyclopentadienyl, norbornenyl, isoprenyl, isopropenyl, allyl or butenyl ester groups, but especially acrylate groups.
- the groups are preferably bonded to the respective basic structures of the binders via urethane, urea, allophanate, ester, ether and / or amide groups, but in particular via ester groups.
- This is usually done by customary and known polymer-analogous reactions, such as the reaction of pendant glycidyl groups with the above-described olefinically unsaturated monomers which contain an acid group, of pendant hydroxyl groups with the halides of these monomers, of isocyanates containing hydroxyl groups with double bonds, such as vinyl isocyanate, methacryloyl isocyanate and / or l- (l-isocyanato-l-methylethyl) - 3- (l-mefethylethenyl) benzene (TMI® from CYTEC) or of isocanate groups with the above-described hydroxyl-containing monomers.
- the material composition of the binders does not have any special features, but it does come
- powder coatings and slurries curable thermally or thermally and with actinic radiation are predominant
- suitable (meth) acrylate copolymers are the epoxy group-containing (meth) acrylate copolymers with an epoxy equivalent weight, preferably at 400 to 2,500, preferably 420 to 2,200, particularly preferably 430 to 2,100, very particularly preferably 440 to 2,000 and in particular 440 to 1,900, a number average molecular weight (gel permeation chromatography) determined using a polystyrene standard) of preferably 2,000 to 20,000 and in particular 3,000 to 10,000, and a glass transition temperature (TG) of preferably 30 to 80, preferably 40 to 70 and in particular 40 to 60 ° C (measured with the aid of differential scanning calometry (DSC ), as they come into consideration in particular for use in thermally curable powder clearcoat slurries (see above) and as they are also in.
- the patent specifications and patent applications EP 0 299 420 A1, DE 22 14 650 B1, DE 27 49 576 B1, US 4,091,048 A1 or US 3,781,379 A1 are described
- the preparation of the binders also has no special features in terms of method, but instead takes place with the aid of the customary and known methods of polymer chemistry, as described in detail, for example, in the patents listed above.
- polyesters and alkyd resins are described, for example, in the standard work Ullmanns Encyklopadie der Technische Chemie, 3rd edition, volume 14, Urban & Schwarzenberg, Kunststoff, Berlin, 1963, pages 80 to 89 and pages 99 to 105, as well as in the books: "Resines Alkydes-Polyesters” by J. Bourry, Paris, Verlag Dunod, 1952, "klkyd Resins” by CR Marxens, Reinhold Publishing Corporation, New York, 1961, and “Ay Resin Technology” by TC Patton, rntersience Publishers, 1962 , described.
- the content of binders in the disperse phase of the pigmented powder slurries and the powder slurry clearcoats can vary very widely and depends primarily on whether they are physically or physically self-crosslinking and / or pigmented.
- the content can be up to 100% by weight.
- the color and / or effect pigment content described below must also be taken into account.
- the binder content is preferably 10 to 80, preferably 15 to 75, particularly preferably 20 to 70, very particularly preferably 25 to 65 and in particular 30 up to 60% by weight, based in each case on the solids of the powder slurry.
- the powder slurries which are crosslinkable, pigmented and unpigmented, can be mixed or thermally curable with actinic radiation, and contain at least one crosslinking agent which contains the reactive functional groups which are complementary to the reactive functional groups of the binders.
- the person skilled in the art can therefore easily select the crosslinking agents suitable for a given powder slurry.
- beta-hydroxyalkylamides such as N, N, N ', N'-tefrakis (2-hydroxyemyl) adipamide or N, N, N ! , N'-tetrakis (2-hydroxypropyl) adipamide and / or
- Tris (aü ⁇ : oxycarbonylam o) triazines as are described in the patents US 4,939,213 A1, US 5,084,541 A1, US 5,288,865 A1 or EP 0 604 922 A1.
- the content of the crosslinking agents in the powder slurries can likewise vary very widely and is guided by the requirements of the individual case, in particular by the number of reactive functional groups present. It is preferably 1.0 to 40, preferably 2.0 to 35, particularly preferably 3.0 to 30, very particularly preferably 4.0 to 27 and in particular 5.0 to 25% by weight, in each case based on the solid the powder slurry.
- the pigmented powder slurries contain at least one color and / or effect pigment, in particular at least one effect pigment.
- effect pigments reference is made to Römpp Lexikon Lacke und Druckmaschine, Georg Thieme Verlag, 1998, pages 176, "Effect Pigments", and pages 380 and 381 "Metalloxid-Mimmer-Pigments" to "Metallpigmente”.
- metal pigments such as commercially available aluminum bronzes, chromated aluminum bronzes according to DE-A-36 36 183, commercially available stainless steel bronzes and metal-containing and non-metallic effect pigments, such as, for example, pearlescent or interference pigments, are suitable as effect pigments.
- Metal effect pigments, in particular aluminum effect pigments are particularly preferably used.
- the effect pigment can have a broad or a narrow particle size distribution or particle size distribution.
- the term “broad grain size distribution” indicates that the effect pigment in question has a comparatively large amount of fine grain, ie pigment particles with a grain size in the range from 1 to 10 ⁇ m, and a comparatively large amount of coarse grain with a grain size in the range of 70 to 90 ⁇ m, which results in a particularly flat slope of the cumulative distribution curve.
- the effect pigments can also be leafing effect pigments with a broad or narrow particle size distribution.
- Leafing pigments are pigments that float in layers of pigmented coating materials. According to DIN 55 945 (12/1988), this denotes the accumulation of pigments on the surface of a coating material (cf. Römpp Lexikon Lacke und Druckmaschine, Georg Thieme Verlag, 1998, page 351, "Leafing-Pigments").
- Oligomers are understood to mean resins which contain at least 2 to 15 monomer units in their molecule.
- Polymers are understood to mean resins which contain at least 10 monomer units in their molecule.
- Suitable oligomers and polymers are linear and / or branched and / or block-like, comb-like and / or randomly structured polyaddition resins, polycondensation resins and / or (co) polymers of ethylenically unsaturated monomers.
- suitable (co) polymers are (meth) acrylate (co) polymers and / or polystyrene, polyvinyl esters, polyvinyl ethers, polyvinyl halides, polyvinylamides, polyacrylonitrile polyethylenes, polypropylenes, polybutylenes, polyisoprenes and / or their copolymers.
- suitable polyaddition resins or polycondensation resins are polyesters, alkyds, polylactones, polycarbonates, polyethers, epoxy resin-amine adducts, polyurethanes and or polyureas.
- the effect pigments can be made hydrophilic. This is preferably done by pasting with a nonionic surfactant (cf. Römpp Lexikon Lacke und Druckmaschine, Georg Thieme Verlag, 1998, page 410, "Nonionic surfactants”).
- the finely divided dimensionally stable constituents of the pigmented powder slurries contain the total amount of the effect pigments used.
- the finely divided dimensionally stable constituents of the pigmented powder slurries contain no effect pigments; i.e. all effect pigments used are available as a separate solid phase.
- the finely divided dimensionally stable constituents of the pigmented powder slurries contain part of the effect pigments used, whereas the other part is present as a separate solid phase.
- the proportion present in the finely divided dimensionally stable constituents can be the main amount, i.e. are more than 50% of the coated effect pigments used. However, there are also less than 50% in the finely divided dimensionally stable components.
- the amount of the effect pigments in the pigmented powder slurries can vary very widely and depends on the requirements of the individual case, in particular on the optical effect to be set and / or the opacity of the coated effect pigments used in each case. 5
- the content of effect pigments is preferably 0.1 to 20, preferably 0.3 to 18, particularly preferably 0.5 to 16, very particularly preferably 0.7 to 14 and in particular 0.9 to 12% by weight in each case based on the solids content of the powder slurry.
- the pigmented powder slurries can contain other customary and known coloring pigments.
- These pigments can consist of inorganic or organic compounds.
- the pigmented powder slurries therefore guarantee a universal range of use due to this 15 large number of suitable pigments and enable the realization of a variety of particularly beautiful colors and optical effects.
- suitable inorganic color pigments are titanium dioxide, iron oxides and carbon black.
- suitable organic coloring pigments smdThioindigo pigments, todanthrene blue, irgalith blue, heliogen blue, grgazin blue, Palomar blue, cromophthal red, Hostaperm pink, irgazin orange, Sicotrans yellow, Sicotan yellow, Hostaperm yellow, Paliotan yellow and heliogenic green. 25
- the pigmented powder slurries may also contain organic and inorganic fillers which, like the pigments, can be present inside and outside the finely divided dimensionally stable constituents; what has been said about the pigments applies here analogously.
- suitable organic and inorganic fillers are chalk, calcium sulfates, barium sulfate, silicates such as talc or kaolin, silicas, oxides such as aluminum hydroxide or magnesium hydroxide or organic fillers such as textile fibers, cellulose fibers, polyethylene fibers, polyacrylonitrile powder, polyamide powder or wood flour.
- suitable fillers are known from German patent application DE 196 06 706 A1, column 8, lines 30 to 64. They are preferably used in the amounts specified therein.
- the pigments and fillers can also be in ultra-fine, non-opaque form.
- the proportion of pigments, fillers and effect pigments in the pigmented powder slurries can vary very widely and depends on the requirements of the individual case, in particular on the optical effect to be set and / or the opacity of the pigments used in each case.
- the content of pigments, fillers and effect pigments is preferably 1.0 to 80, preferably 2.0 to 75, particularly preferably 3.0 to 70, very particularly preferably 4.0 to 65 and in particular 5.0 to 60% by weight, based in each case on the solids of the powder slurry.
- the pigmented powder slurries can contain, in addition to the pigments and / or fillers described above, or instead of these, molecularly dispersed organic dyes.
- molecularly dispersed dyes are present in the finely divided, dimensionally stable constituents of the powder coatings.
- pigmented powder slurries they can either be present in the dispersed, finely divided dimensionally stable constituents or in the continuous phase of the pigmented powder slurries.
- the proportion present in the finely divided dimensionally stable constituents can be the main amount, i.e. deal with more than 50% of the organic dyes used. However, there may also be less than 50% erin.
- the distribution of the organic dyes between the phases can correspond to the thermodynamic equilibrium which results from the solubility of the organic dyes in the phases. The distribution can also be far from the thermodynamic equilibrium.
- the content of the pigmented powder slurries in the molecularly dispersed organic dyes can vary very widely and depends primarily on the color and the hue to be adjusted, and on the amount of any pigments and / or fillers present.
- the pigmented and unpigmented powder slurries can also contain at least one additive. Depending on its physicochemical properties and / or its function, this can be present essentially in the solid, finely divided constituents of the powder slurries or essentially in the continuous phase.
- thermally curable reactive diluents such as positionally isomeric diethyloctanediols or hyperbranched hydroxyl groups
- Crosslinking catalysts such as dibutyltin dilaurate, lithium decanoate or zinc octoate, organic blocked with amines Sulphonic acids, quaternary ammonium compounds, amine, imidazole and imidazole derivatives such as 2-styrylimidazole, l-benzyl-2-memylimidazole, 2-memylimidazole and 2-butylimidazole, as described in Belgian Patent No. 756,693, or phosphonium catalysts such as emonium triphenyl , Ethyltriphenylphosphonium chloride,
- EmyMphenylphosphoniumthiocyanat Ethyltriphenylphosphonium-
- Acetate-acetic acid complex tetraburylphosphonium iodide, tetrabutylphosphonium bromide and tetrabutylphosphonium acetate-acetic acid complex, as are described, for example, in US Pat. Nos. 3,477,990 A1 or 3,341,580 A1;
- thermolabile free radical initiators such as organic peroxides, organic azo compounds or C-C-cleaving initiators such as dialkyl peroxides, peroxocarboxylic acids, peroxodicarbonates, peroxide esters, hydroperoxides, ketone peroxides, azodinitriles or benzpinacol silyl ether;
- Antioxidants such as hydrazines and phosphorus compounds
- UV absorbers such as triazines and benzotriphenol
- Light stabilizers such as HALS compounds, benzotriazoles or oxalanilides
- Radical scavengers and polymerization inhibitors such as organic phosphites or 2,6 di-tert-butylphenol derivatives
- Emulsifiers in particular nonionic emulsifiers such as alkoxylated alkanols and polyols, phenols and alkylphenols, anionic emulsifiers such as alkali salts or ammonium salts of alkane carboxylic acids,
- wetting agents such as siloxanes, fluorine-containing compounds, carboxylic acid half-esters, phosphoric acid esters, polyacrylic acids and their
- Copolymers or polyurethanes as described, for example, in detail in patent application DE 198 35 296 A 1, in particular in connection with the associative polyurethane-based thickeners described below;
- Adhesion promoters such as tricyclodecanedimethanol
- Deaerators such as diazadicycloundecane or benzoin;
- rheology control additives such as those known from the patent specifications WO 94/22968, EP 0 276 501 A1, EP 0 249 201 A1 or WO 97/12945; crosslinked polymeric microparticles, as disclosed, for example, in EP 0 008 127 A1; inorganic layered silicates such as aluminum-magnesium silicates, sodium-magnesium and
- Montmorillonite type Silicas such as aerosils; or synthetic polymers with ionic and / or associative groups such as
- the production of the powder slurries also has no special features in terms of method, but is carried out using customary and known processes.
- the powder slurries are produced essentially from the components described above, as in the patent applications DE 195 40 977 A1, DE 195 18 392 A1, DE 196 17 086 A1, DE-A-196 13 547 , DE 196 18 657 A1, DE 196 52 813 A1, DE 196 17 086 A1, DE-A-198 14 471 A1, DE 198 41 842 A1 or DE 198 41 408 A1 described in detail, only that color and / or effect pigments may also be processed within the scope of the present invention.
- the powder coating is converted into the powder slurry by wet grinding or by stirring dry powder coating in water or an aqueous medium. Wet grinding is particularly preferred.
- the constituents described above are emulsified in an organic solvent, resulting in an oil-in-water type emulsion.
- the organic solvent is then removed, as a result of which the emulsified droplets solidify and the powder slurry results. Possibly. it can still be wet-milled to improve filterability.
- a liquid melt of the constituents described above if appropriate together with the unmelted coloring and / or effect pigments, is added to an emulsifying device, preferably with the addition of water and stabilizers, the emulsion obtained is cooled and filtered, causing the powder slurry results.
- an emulsifying device preferably with the addition of water and stabilizers
- the emulsion obtained is cooled and filtered, causing the powder slurry results.
- the resulting powder slurries are preferably filtered after the wet grinding.
- the usual and known filtration devices and filters are used, as are also considered for the filtration of known powder slurries.
- the mesh size of the filter can vary widely and depends primarily on the particle size and the particle size distribution of the particles of the suspension. The person skilled in the art can therefore easily determine the suitable filters based on this physical parameter. Examples of suitable filters are bag filters. These are available on the market under the Pong® or Cuno® brands. Bag filters with a mesh size of 10 to 50 ⁇ m are preferably used, for example Pong® 10 to Pong® 50.
- the powder slurry clearcoat was taken up from a storage trough by a pick-up roller which rotated at a circulation speed of 13.5 m / min.
- the powder slurry clearcoat was transferred to the application roller at a narrow roller nip. This rotated at a rotational speed of 52 m / min and transferred the powder slurry clearcoat in opposite directions to the aluminum belt.
- the wet layer thickness of the powder slurry clearcoat layer was chosen so that a dry layer thickness of 12 ⁇ m resulted after curing.
- the tape coated with the powder slurry clear coat was fed to a 40 m long convection oven, in which the tape was heated up to a maximum object temperature of 250 ° C so that the water contained in the powder slurry clear coat evaporated, the solid powder slurry clear coat melted and ran and hardened in the molten state. The entire hardening process took almost 1 min.
- the clearcoat produced in accordance with the procedure according to the invention was smooth and highly transparent. At 100 units, their gloss was 60 °. It withstood more than 100 double strokes with a cotton ball bound with methyl ethyl ketone without damage.
- the flexural strength cf. Römpp Lexikon Lacke und Druckmaschine, Georg Thieme Verlag, J.998, page 73, "Flexural strength”
- the Adhesion strength was very good (T-Bend test: TO; Tapetest: TO).
- the scratch resistance was also very good (scratch resistance according to Erichsen:> 40 N).
- the aluminum tape coated with the clear coat could easily be formed into molded parts such as window frames and lighting parts by deep drawing.
Landscapes
- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10027444 | 2000-06-02 | ||
| DE10027444A DE10027444A1 (de) | 2000-06-02 | 2000-06-02 | Bandbeschichtungsverfahren mit Pulverlackdispersionen (Pulverslurries) |
| PCT/EP2001/006226 WO2001091926A1 (de) | 2000-06-02 | 2001-06-01 | Bandbeschichtungsverfahren mit pulverlackdispersionen (pulverslurries) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1289680A1 true EP1289680A1 (de) | 2003-03-12 |
Family
ID=7644510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP01951542A Withdrawn EP1289680A1 (de) | 2000-06-02 | 2001-06-01 | Bandbeschichtungsverfahren mit pulverlackdispersionen (pulverslurries) |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20030118734A1 (de) |
| EP (1) | EP1289680A1 (de) |
| AU (1) | AU2001272443A1 (de) |
| DE (1) | DE10027444A1 (de) |
| MX (1) | MXPA02010111A (de) |
| WO (1) | WO2001091926A1 (de) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10106890B4 (de) * | 2001-02-14 | 2006-10-05 | Advanced Photonics Technologies Ag | Verfahren und Anordnung zur Herstellung eines quasi-endlosen beschichteten, wickelfähigen Bleches |
| DE10258291A1 (de) | 2002-12-13 | 2004-07-08 | Henkel Kgaa | Verfahren zur Beschichtung von Metallsubstraten mit einem radikalisch polymerisierbaren Überzugsmittel und beschichtete Substrate |
| EP1443059A1 (de) * | 2003-02-02 | 2004-08-04 | Solutia Italy S.r.l. | Harze für Pulverbeschichtungszusammensetzung |
| DE102006004574A1 (de) | 2005-06-06 | 2006-12-07 | Advanced Photonics Technologies Ag | Vorrichtung und Verfahren zur Farb- bzw. Lackbeschichtung eines wickelfähigen Bleches |
| DE102005041380A1 (de) * | 2005-09-01 | 2007-03-08 | Basf Coatings Ag | Verwendung von alkoxylierten Fettalkoholen in strukturviskosen Klarlack-Slurries, strukturviskose Klarlack-Slurry, Verfahren zu ihrer Herstellung und ihre Verwendung |
| US20070059516A1 (en) * | 2005-09-13 | 2007-03-15 | Vincent Jean L | Fire resistant insulated building panels utilizing intumescent coatings |
| FR2933706B1 (fr) * | 2008-07-10 | 2010-08-27 | Arkema France | Composition pulverulente pour la fabrication d'objets ayant un aspect metallique stable au cours du temps et une resistance au crayonnage amelioree |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1492962A (en) * | 1974-02-19 | 1977-11-23 | Alcan Res & Dev | Method and apparatus for applying coating compositions to strip material |
| US3999957A (en) * | 1974-06-05 | 1976-12-28 | Pennwalt Corporation | Process of coating metal and resultant product |
| US4190693A (en) * | 1975-06-17 | 1980-02-26 | Rohm And Haas Company | Coating method using compositions comprising acrylic oligomers, high polymers and crosslinkers |
| GB2174315B (en) * | 1985-05-03 | 1988-10-19 | Cooper Coated Coil Ltd | Improvements relating to pre-coated metal sheet suitable for use in the manufacture of bakeware and other products intended for use at high temperatures |
| US4634602A (en) * | 1986-01-02 | 1987-01-06 | Ppg Industries, Inc. | Primer composition |
| DE19632426C2 (de) * | 1996-06-14 | 1999-02-04 | Basf Coatings Ag | Verfahren zur Beschichtung von Metallbändern |
| PL193008B1 (pl) * | 1998-02-17 | 2007-01-31 | Du Pont | Sposób powlekania powierzchni podłoża zestawem farby proszkowej |
| DE19835849A1 (de) * | 1998-08-07 | 2000-02-10 | Basf Coatings Ag | Mit energiereicher Strahlung und/oder thermisch härtbare Pulverlacke mit funktionalisierter Grundstruktur |
| DE19841842C2 (de) * | 1998-09-12 | 2000-07-06 | Basf Coatings Ag | Strukturviskose, von organischen Lösemitteln und externen Emulgatoren freie Pulverklarlack-Slurry, Verfahren zu ihrer Herstellung und ihre Verwendung |
| DE19843581C2 (de) * | 1998-09-23 | 2002-11-14 | Basf Coatings Ag | Verfahren zur Herstellung lackierter Substrate sowie entsprechend lackierte Substrate und deren Verwendung |
| DE19908018A1 (de) * | 1999-02-25 | 2000-08-31 | Basf Coatings Ag | Thermisch und mit aktinischer Strahlung härtbare Pulverslurry, Verfahren zu ihrer Herstellung und ihre Verwendung |
| DE19908013A1 (de) * | 1999-02-25 | 2000-08-31 | Basf Coatings Ag | Mit aktinischer Strahlung und gegebenenfalls themisch härtbare Pulverslurrys, Verfahren zu ihrer Herstellung und ihre Verwendung |
| DE19920141C1 (de) * | 1999-05-03 | 2001-01-25 | Basf Coatings Ag | Vergilbungsarme wäßrige Pulverklarlack-Dispersionen, Verfahren zur Herstellung von mehrschichtigen Lackierungen und Verwendung von Polyvalenten anorganischen Säuren und/oder Oxalsäure hierbei |
| DE19933186A1 (de) * | 1999-07-15 | 2001-01-18 | Henkel Kgaa | Verfahren zum Auftrag von No-Rinse-Produkten auf laufende Metallbänder |
-
2000
- 2000-06-02 DE DE10027444A patent/DE10027444A1/de not_active Ceased
-
2001
- 2001-06-01 EP EP01951542A patent/EP1289680A1/de not_active Withdrawn
- 2001-06-01 US US10/257,927 patent/US20030118734A1/en not_active Abandoned
- 2001-06-01 WO PCT/EP2001/006226 patent/WO2001091926A1/de not_active Ceased
- 2001-06-01 MX MXPA02010111A patent/MXPA02010111A/es not_active Application Discontinuation
- 2001-06-01 AU AU2001272443A patent/AU2001272443A1/en not_active Abandoned
Non-Patent Citations (1)
| Title |
|---|
| See references of WO0191926A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10027444A1 (de) | 2002-02-14 |
| MXPA02010111A (es) | 2003-03-10 |
| US20030118734A1 (en) | 2003-06-26 |
| AU2001272443A1 (en) | 2001-12-11 |
| WO2001091926A1 (de) | 2001-12-06 |
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