EP1922375A1 - Hybrid-pulverlackzusammensetzung mit niedriger einbrenntemperatur für halbglänzende bis matte überzüge - Google Patents
Hybrid-pulverlackzusammensetzung mit niedriger einbrenntemperatur für halbglänzende bis matte überzügeInfo
- Publication number
- EP1922375A1 EP1922375A1 EP06777262A EP06777262A EP1922375A1 EP 1922375 A1 EP1922375 A1 EP 1922375A1 EP 06777262 A EP06777262 A EP 06777262A EP 06777262 A EP06777262 A EP 06777262A EP 1922375 A1 EP1922375 A1 EP 1922375A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- powder coating
- coating composition
- composition according
- carboxyl
- weight
- 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- Withdrawn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
- 239000000843 powder Substances 0.000 title claims abstract description 50
- 239000000203 mixture Substances 0.000 title claims abstract description 7
- 239000003973 paint Substances 0.000 title abstract description 4
- 239000008199 coating composition Substances 0.000 claims description 38
- 229920000728 polyester Polymers 0.000 claims description 33
- 239000002253 acid Substances 0.000 claims description 32
- 238000000576 coating method Methods 0.000 claims description 28
- 229920000647 polyepoxide Polymers 0.000 claims description 26
- 239000003822 epoxy resin Substances 0.000 claims description 25
- -1 cyclic amidine Chemical class 0.000 claims description 24
- 238000002844 melting Methods 0.000 claims description 24
- 230000008018 melting Effects 0.000 claims description 23
- CYIDZMCFTVVTJO-UHFFFAOYSA-N pyromellitic acid Chemical compound OC(=O)C1=CC(C(O)=O)=C(C(O)=O)C=C1C(O)=O CYIDZMCFTVVTJO-UHFFFAOYSA-N 0.000 claims description 20
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 claims description 19
- 239000003054 catalyst Substances 0.000 claims description 18
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 12
- 125000003118 aryl group Chemical group 0.000 claims description 12
- 239000004848 polyfunctional curative Substances 0.000 claims description 12
- 239000000654 additive Substances 0.000 claims description 11
- 238000002360 preparation method Methods 0.000 claims description 11
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 9
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 8
- 150000007513 acids Chemical class 0.000 claims description 8
- PXKLMJQFEQBVLD-UHFFFAOYSA-N bisphenol F Chemical compound C1=CC(O)=CC=C1CC1=CC=C(O)C=C1 PXKLMJQFEQBVLD-UHFFFAOYSA-N 0.000 claims description 8
- QQVIHTHCMHWDBS-UHFFFAOYSA-N isophthalic acid Chemical compound OC(=O)C1=CC=CC(C(O)=O)=C1 QQVIHTHCMHWDBS-UHFFFAOYSA-N 0.000 claims description 8
- 239000004593 Epoxy Substances 0.000 claims description 7
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims description 7
- 150000002924 oxiranes Chemical group 0.000 claims description 7
- GHLKSLMMWAKNBM-UHFFFAOYSA-N dodecane-1,12-diol Chemical compound OCCCCCCCCCCCCO GHLKSLMMWAKNBM-UHFFFAOYSA-N 0.000 claims description 6
- CIFIGXMZHITUAZ-UHFFFAOYSA-M tetraethylazanium;benzoate Chemical compound CC[N+](CC)(CC)CC.[O-]C(=O)C1=CC=CC=C1 CIFIGXMZHITUAZ-UHFFFAOYSA-M 0.000 claims description 6
- YJBAUTPCBIGXHL-UHFFFAOYSA-N 1-phenyl-4,5-dihydroimidazole Chemical compound C1=NCCN1C1=CC=CC=C1 YJBAUTPCBIGXHL-UHFFFAOYSA-N 0.000 claims description 5
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims description 5
- LYWVNPSVLAFTFX-UHFFFAOYSA-N 4-methylbenzenesulfonate;morpholin-4-ium Chemical compound C1COCCN1.CC1=CC=C(S(O)(=O)=O)C=C1 LYWVNPSVLAFTFX-UHFFFAOYSA-N 0.000 claims description 4
- QIGBRXMKCJKVMJ-UHFFFAOYSA-N Hydroquinone Chemical compound OC1=CC=C(O)C=C1 QIGBRXMKCJKVMJ-UHFFFAOYSA-N 0.000 claims description 4
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 claims description 4
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical compound OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 claims description 4
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 claims description 4
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 4
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims description 4
- ARCGXLSVLAOJQL-UHFFFAOYSA-N trimellitic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C(C(O)=O)=C1 ARCGXLSVLAOJQL-UHFFFAOYSA-N 0.000 claims description 4
- DNIAPMSPPWPWGF-VKHMYHEASA-N (+)-propylene glycol Chemical compound C[C@H](O)CO DNIAPMSPPWPWGF-VKHMYHEASA-N 0.000 claims description 3
- YPFDHNVEDLHUCE-UHFFFAOYSA-N 1,3-propanediol Substances OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 claims description 3
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims description 3
- ALQSHHUCVQOPAS-UHFFFAOYSA-N Pentane-1,5-diol Chemical compound OCCCCCO ALQSHHUCVQOPAS-UHFFFAOYSA-N 0.000 claims description 3
- OWBTYPJTUOEWEK-UHFFFAOYSA-N butane-2,3-diol Chemical compound CC(O)C(C)O OWBTYPJTUOEWEK-UHFFFAOYSA-N 0.000 claims description 3
- 150000007942 carboxylates Chemical class 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- SLCVBVWXLSEKPL-UHFFFAOYSA-N neopentyl glycol Chemical compound OCC(C)(C)CO SLCVBVWXLSEKPL-UHFFFAOYSA-N 0.000 claims description 3
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 claims description 3
- 229920000166 polytrimethylene carbonate Polymers 0.000 claims description 3
- WMRCTEPOPAZMMN-UHFFFAOYSA-N 2-undecylpropanedioic acid Chemical compound CCCCCCCCCCCC(C(O)=O)C(O)=O WMRCTEPOPAZMMN-UHFFFAOYSA-N 0.000 claims description 2
- SXFJDZNJHVPHPH-UHFFFAOYSA-N 3-methylpentane-1,5-diol Chemical compound OCCC(C)CCO SXFJDZNJHVPHPH-UHFFFAOYSA-N 0.000 claims description 2
- QISOBCMNUJQOJU-UHFFFAOYSA-N 4-bromo-1h-pyrazole-5-carboxylic acid Chemical compound OC(=O)C=1NN=CC=1Br QISOBCMNUJQOJU-UHFFFAOYSA-N 0.000 claims description 2
- FBPFZTCFMRRESA-FSIIMWSLSA-N D-Glucitol Natural products OC[C@H](O)[C@H](O)[C@@H](O)[C@H](O)CO FBPFZTCFMRRESA-FSIIMWSLSA-N 0.000 claims description 2
- FBPFZTCFMRRESA-KVTDHHQDSA-N D-Mannitol Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-KVTDHHQDSA-N 0.000 claims description 2
- FBPFZTCFMRRESA-JGWLITMVSA-N D-glucitol Chemical compound OC[C@H](O)[C@@H](O)[C@H](O)[C@H](O)CO FBPFZTCFMRRESA-JGWLITMVSA-N 0.000 claims description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Natural products OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 claims description 2
- 229930195725 Mannitol Natural products 0.000 claims description 2
- YIMQCDZDWXUDCA-UHFFFAOYSA-N [4-(hydroxymethyl)cyclohexyl]methanol Chemical compound OCC1CCC(CO)CC1 YIMQCDZDWXUDCA-UHFFFAOYSA-N 0.000 claims description 2
- KXHPPCXNWTUNSB-UHFFFAOYSA-M benzyl(trimethyl)azanium;chloride Chemical compound [Cl-].C[N+](C)(C)CC1=CC=CC=C1 KXHPPCXNWTUNSB-UHFFFAOYSA-M 0.000 claims description 2
- SZXQTJUDPRGNJN-UHFFFAOYSA-N dipropylene glycol Chemical compound OCCCOCCCO SZXQTJUDPRGNJN-UHFFFAOYSA-N 0.000 claims description 2
- 150000004820 halides Chemical class 0.000 claims description 2
- 238000000265 homogenisation Methods 0.000 claims description 2
- 239000000594 mannitol Substances 0.000 claims description 2
- 235000010355 mannitol Nutrition 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- BDJRBEYXGGNYIS-UHFFFAOYSA-N nonanedioic acid Chemical compound OC(=O)CCCCCCCC(O)=O BDJRBEYXGGNYIS-UHFFFAOYSA-N 0.000 claims description 2
- 239000000600 sorbitol Substances 0.000 claims description 2
- JRMUNVKIHCOMHV-UHFFFAOYSA-M tetrabutylammonium bromide Chemical compound [Br-].CCCC[N+](CCCC)(CCCC)CCCC JRMUNVKIHCOMHV-UHFFFAOYSA-M 0.000 claims description 2
- WGYONVRJGWHMKV-UHFFFAOYSA-M tetrabutylazanium;benzoate Chemical compound [O-]C(=O)C1=CC=CC=C1.CCCC[N+](CCCC)(CCCC)CCCC WGYONVRJGWHMKV-UHFFFAOYSA-M 0.000 claims description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 2
- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 claims description 2
- 229940035437 1,3-propanediol Drugs 0.000 claims 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims 2
- 229940117969 neopentyl glycol Drugs 0.000 claims 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Natural products CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 claims 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 claims 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 12
- 239000011248 coating agent Substances 0.000 description 8
- 229920005989 resin Polymers 0.000 description 5
- 239000011347 resin Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 230000002378 acidificating effect Effects 0.000 description 4
- KUBDPQJOLOUJRM-UHFFFAOYSA-N 2-(chloromethyl)oxirane;4-[2-(4-hydroxyphenyl)propan-2-yl]phenol Chemical compound ClCC1CO1.C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 KUBDPQJOLOUJRM-UHFFFAOYSA-N 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 229920005862 polyol Polymers 0.000 description 3
- 150000003077 polyols Chemical class 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- HWCKGOZZJDHMNC-UHFFFAOYSA-M tetraethylammonium bromide Chemical compound [Br-].CC[N+](CC)(CC)CC HWCKGOZZJDHMNC-UHFFFAOYSA-M 0.000 description 3
- 239000004408 titanium dioxide Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 125000003700 epoxy group Chemical group 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000049 pigment Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229940043375 1,5-pentanediol Drugs 0.000 description 1
- FWQNYUYRXNWOOM-UHFFFAOYSA-N 2-nonylpropanedioic acid Chemical compound CCCCCCCCCC(C(O)=O)C(O)=O FWQNYUYRXNWOOM-UHFFFAOYSA-N 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 150000007824 aliphatic compounds Chemical class 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- VKONPUDBRVKQLM-UHFFFAOYSA-N cyclohexane-1,4-diol Chemical compound OC1CCC(O)CC1 VKONPUDBRVKQLM-UHFFFAOYSA-N 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 150000002357 guanidines Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- ZFACJPAPCXRZMQ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O.OC(=O)C1=CC=CC=C1C(O)=O ZFACJPAPCXRZMQ-UHFFFAOYSA-N 0.000 description 1
- 229940098458 powder spray Drugs 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 239000012261 resinous substance Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 150000003512 tertiary amines Chemical class 0.000 description 1
- 125000005207 tetraalkylammonium group Chemical group 0.000 description 1
- 150000005621 tetraalkylammonium salts Chemical class 0.000 description 1
- 239000012463 white pigment Substances 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/03—Powdery paints
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/18—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing
- C08G59/68—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used
- C08G59/686—Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups ; e.g. general methods of curing characterised by the catalysts used containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
Definitions
- the invention relates to low-firing hybrid powder coating compositions for semi-gloss to matt coatings, a process for their preparation and their use.
- DE-OS 44 03 225 describes salts of pyromellitic acid and tertiary amines, which can be used for the preparation of matt epoxy and hybrid coatings.
- the object of the present invention was to find a powder coating composition which can also be cured at temperatures well below 200 ° C, but leads to coatings with a semi-glossy to dull appearance.
- the composition of the invention not only leads to a lowering of the baking temperature of the powder coating composition to about 160 ° C, but also at the same time produces the desired semi-glossy to matte surface of the coatings.
- the invention relates to a powder coating composition, essentially containing
- the carboxyl-containing polyesters A) are polyesterpolycarboxylic acids which are prepared from polyols and polycarboxylic acids or derivatives thereof.
- the melting range of these acidic polyesters is in a range of 60 to 160 ° C, preferably 80 to 120 ° C; their acid number varies from 20 to 150 mg KOH / g, preferably 30 to 60 mg KOH / g.
- the OH numbers should be below 10 mg KOH / g.
- the average molecular weight (M w ) is 1000 to 5000 g / mol.
- the polyesters are present in amounts of from 12 to 30% by weight, preferably from 15 to 25% by weight, in the powder coating composition according to the invention.
- polyesters A) for the preparation of the polyesters A) to be used are polycarboxylic acids, such as. For example, oxalic, adipic, 2,2,4 (2,4,4) -trimethyladipine, azelaic, sebacic, decanedicarboxylic, dodecanedicarboxylic, fumaric, phthalic, isophthalic, terephthalic, trimellitic and / or pyromellitic acid used.
- polycarboxylic acids such as.
- polyols used by way of example: ethylene glycol, 1,2- and 1,3-propanediol, 1,2-, 1,3-, 1,4- and 2,3-butanediol, 1,5-pentanediol, 3-methyl-1, 5-pentanediol, neopentyl glycol, 1,12-dodecanediol, 2.2.4 (2.4.4) -trimethyl-1,6-hexanediol, trimethylolpropane, glycerol, pentaerythritol, 1,4-bis-hydroxymethylcyclohexane, cyclohexane-1,4-diol, diethylene glycol , Triethylene glycol and dipropylene glycol.
- hydroxyl-containing acidic polyesters which are prepared by known processes from polycarboxylic acids and polyols, can be reacted with polycarboxylic acids and / or polycarboxylic anhydrides to the polyester polycarboxylic acids.
- Preferred monomers are adipic, succinic, isophthalic, terephthalic, trimellitic, 1,10-decane-di- and 1,12-dodecane diacid.
- the epoxy resins B) used are solid, resinous substances which melt in the range 60 to 150 ° C, preferably 70 to 110 ° C, and which contain on average more than one 1,2-epoxide group per molecule. In principle, all compounds which contain more than one 1,2-epoxide group per molecule are suitable. Examples are polyepoxides such as polyglycidyl ethers of aromatic or aliphatic compounds containing several hydrogen atoms. These include resorcinol, hydroquinone, pyrocatechol, bisphenol A, bisphenol F, glycerol, pentaerythritol, mannitol, sorbitol and trimethylolpropane.
- EP resins as obtained by reacting bisphenol A or bisphenol F with epichlorohydrin.
- EP resins based on the reaction between bisphenol A and epichlorohydrin having an EP equivalent weight of from 400 to 3,000, preferably from 800 to 1,000, in amounts of from 30 to 40% by weight.
- the curing agent C consisting of the mono-salt of an aromatic polycarboxylic acid and a cyclic amidine, in amounts of 1.5 to 12 wt .-%, based on the sum of all starting materials used.
- Particularly suitable is the monosalt of pyromellitic acid and phenylimidazoline, which z. B. under the product name VESTAGON B 68 by the company Degussa, Germany, is sold.
- a customary preparation consists in adding, to an aqueous solution of pyromellitic acid at about 70 ° C., the appropriate amount of phenylimidazoline (1 mol of imidazoline per mole of acid), homogenizing the reaction mixture at 70 ° to 80 ° C. for one hour and then to room temperature is cooled. The sparingly soluble mono-salt precipitates, is filtered off, dried and then finely ground. The so produced high-melting monosalt can then be used in this form as a curing agent in the powder coating composition according to the invention.
- tetraalkylammonium compounds, halides and carboxylates are preferably used in amounts of from 0.2 to 1.5% by weight. In particular are suitable
- Tetraalkylammonium salts based on the following carboxylic acids: acetic, propionic, benzoic,
- Adipic, terephthalic and isophthalic acid are particularly suitable.
- Particularly suitable are tetraethylammonium benzoate, tetrabutylammonium benzoate, benzyltrimethylammonium chloride and
- Tetrabutylammonium bromide Tetrabutylammonium bromide.
- the commercially available products for example Merck, Aldrich, Fluka
- Typical auxiliaries and additives are leveling agents, pigments and fillers, the additional amount of which can be varied in the range from 0 to 45% by weight.
- the invention also provides a process for the preparation of a powder coating composition, essentially containing
- At least 12 wt .-% of at least one carboxyl-containing polyester having an acid number of 20 to 150 mg KOH / g, an average molecular weight M w of 1000 to 5000 g / mol and a melting range of 60 to 160 ° C, and
- the COOH-functionalized polyester, the epoxy resin, the curing agent, the catalyst, leveling agent, pigments and fillers are mixed together at room temperature and then homogenized on an extruder or kneader at temperatures of 100 to 140 ° C. After cooling, the extrudate is crushed, ground and then screened to a particle size ⁇ 100 microns.
- the ratio of polyester to resin is selected to provide from 0.3 to 0.8, preferably from 0.5 to 0.6, COOH groups per epoxy group of the resin to abreaction of the residual epoxy groups of the resin Added an appropriate amount of hardener. Since the hardener also has a catalytic effect on the various reactions occurring during the firing, an exact stoichiometric calculation of the required amount of hardener for a given gloss level adjustment is not possible and must therefore be determined empirically. In order to achieve the lowest possible levels of gloss, the proportion of polyester must be low and the proportion of hardener must be relatively high.
- the powder coating compositions according to the invention are suitable for the production of coatings having semi-glossy to preferably matt surfaces of the coatings.
- the amounts of the individual powder coating binder components can be varied widely.
- the application of the powder coating composition of the invention to suitable substrates can be prepared by the known methods, such. B. by electrostatic powder spraying, vortex sintering or electrostatic vortex sintering.
- the coated substrates for curing to temperatures of 150 to 180 ° C, preferably 150 to 170 ° C, more preferably 155 to 165 ° C, 157 to 165 ° C, 158 to 162 ° C, most preferably heated at 160 ° C within 30 to 8 min.
- the paint films produced in this way are characterized by very good flow, a good to very good mechanics and a semi-glossy to preferably matt surface, wherein the gloss level is arbitrarily adjustable over a wide range.
- the gloss level measurement is carried out according to DESf EN ISO 2813 by means of a reflectometer whose use is described for the determination of the gloss on flat paint and coating surfaces in DIN 67 530.
- the device can be operated at three different angles of incidence (20 °, 60 ° and 85 °), with 20 ° being used preferably for very matt and 85 ° for high-gloss surfaces; the 60 ° angle is special for gloss level measurements suitable for medium-gloss surfaces, but is also suitable for universal gloss level determination.
- the invention also provides the use of a powder coating composition substantially containing
- the invention further provides coatings with a semi-glossy to matt surface containing a powder coating composition, essentially containing A) at least 12 wt .-% of at least one carboxyl-containing polyester with a
- the starting materials - hardener, epoxy resin, polyester, catalyst and leveling agent - were intimately mixed with the white pigment (TiO 2 ) in a pug mill and then homogenized in the extruder at 90 to 110 ° C. After cooling, the extrudate was crushed and ground in a pin mill to a particle size ⁇ 100 microns.
- the powder prepared as described above was applied with an electrostatic powder spray system at 60 kV on degreased, optionally pretreated steel sheets and baked in a laboratory circulating air dryer,
- KS you. Ball impact directly in inches * lb (ASTM D 2794-93)
- KS rev reverse ball shot in inches * lb (ASTM D 2794-93)
- hybrid powder coating (catalyst: tetraethylammonium benzoate, epoxy resin: polyester ratio: 67: 33)
- VESTAGON B 68 Hardener, Degussa AG
- EPIKOTE 1055 Epoxy Resin, CRYLCOAT 316: Polyester, Cytec
- KRONOS 2220 titanium dioxide, Kronos
- TEAB tetraethylammonium benzoate, Fluka
- hybrid powder coating (based on tctrabutylammonium bromide
- VESTAGON B 68 Hardener, Degussa AG
- KRONOS 2220 titanium dioxide, Kronos
- VESTAGON B 68 Hardener, Degussa AG
- EPIKOTE 1055 Epoxy Resin, Resolution KRONOS 2220: Titanium Dioxide, Kronos
- TEAB tetraethylammonium benzoate
- Fluka Coatings Testing
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005042822A DE102005042822A1 (de) | 2005-09-09 | 2005-09-09 | Hybrid-Pulverlackzusammensetzung mit niedriger Einbrenntemperatur für halbglänzende bis matte Überzüge |
PCT/EP2006/062873 WO2007028661A1 (de) | 2005-09-09 | 2006-06-02 | Hybrid-pulverlackzusammensetzung mit niedriger einbrenntemperatur für halbglänzende bis matte überzüge |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1922375A1 true EP1922375A1 (de) | 2008-05-21 |
Family
ID=36754276
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06777262A Withdrawn EP1922375A1 (de) | 2005-09-09 | 2006-06-02 | Hybrid-pulverlackzusammensetzung mit niedriger einbrenntemperatur für halbglänzende bis matte überzüge |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080255272A1 (de) |
EP (1) | EP1922375A1 (de) |
CN (1) | CN1927969B (de) |
DE (1) | DE102005042822A1 (de) |
WO (1) | WO2007028661A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8476376B2 (en) | 2010-03-11 | 2013-07-02 | Evonik Degussa Gmbh | Heat-curing powder-lacquer compositions yielding a matte surface after curing of the coating, as well as a simple method for production of same |
US20110224459A1 (en) | 2010-03-11 | 2011-09-15 | Evonik Degussa Gmbh | Beta-hydroxyalkylamides, a method for production of same and use of same |
CN103160182B (zh) * | 2013-02-22 | 2016-05-18 | 安徽华辉塑业科技股份有限公司 | 无光型环氧粉末涂料及其制备方法 |
WO2016012254A1 (en) * | 2014-07-25 | 2016-01-28 | Dsm Ip Assets B.V. | Matt powder coatings |
CN108034045A (zh) * | 2018-01-16 | 2018-05-15 | 浙江光华科技股份有限公司 | 一种高填补遮痕粉末涂料用聚酯树脂及其制备方法 |
CN112048057A (zh) * | 2020-09-11 | 2020-12-08 | 安徽鑫友高分子新材料科技有限公司 | 环氧树脂、应用及高流平的超低温固化型纯粉末涂料 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1460505A (en) * | 1973-05-16 | 1977-01-06 | Veba Chemie Ag | Method of making matt coatings |
JPS5488932A (en) * | 1977-12-05 | 1979-07-14 | Toyobo Co Ltd | Resin composition for coating powder |
FR2577231B1 (fr) * | 1985-02-08 | 1987-09-11 | Charbonnages Ste Chimique | Procede de preparation des compositions de revetement en poudre a base d'une resine epoxy et d'un polyester carboxyle |
US5244944A (en) * | 1991-06-05 | 1993-09-14 | Eastman Kodak Company | Thermosetting powder coating compositions |
GB9112051D0 (en) * | 1991-06-05 | 1991-07-24 | Shell Int Research | Epoxy resin powder coating composition |
JP2001106965A (ja) * | 1999-10-06 | 2001-04-17 | Shikoku Chem Corp | ビスイミダゾリン化合物のカルボン酸塩を用いたエポキシ/ポリエステル系粉体塗料 |
US7223477B2 (en) * | 2000-12-05 | 2007-05-29 | Alpha Coating Technologies, Llc | Coating powders having enhanced flexability |
JP2002235032A (ja) * | 2001-02-13 | 2002-08-23 | Shikoku Chem Corp | エポキシ/ポリエステル系粉体塗料 |
DE10320266A1 (de) * | 2003-05-03 | 2004-11-18 | Degussa Ag | Feste Uretdiongruppenhaltige Polyurethan-Pulverlackzusammensetzungen bei niedriger Temperatur härtbar |
DE10348965A1 (de) * | 2003-10-22 | 2005-05-25 | Degussa Ag | Epoxidgruppenhaltige Pulverlackzusammensetzungen, die bei niedrigen Temperaturen aushärten |
US20110224459A1 (en) * | 2010-03-11 | 2011-09-15 | Evonik Degussa Gmbh | Beta-hydroxyalkylamides, a method for production of same and use of same |
-
2005
- 2005-09-09 DE DE102005042822A patent/DE102005042822A1/de not_active Ceased
-
2006
- 2006-06-02 US US12/066,325 patent/US20080255272A1/en not_active Abandoned
- 2006-06-02 EP EP06777262A patent/EP1922375A1/de not_active Withdrawn
- 2006-06-02 WO PCT/EP2006/062873 patent/WO2007028661A1/de active Application Filing
- 2006-09-08 CN CN2006101513819A patent/CN1927969B/zh not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2007028661A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN1927969A (zh) | 2007-03-14 |
DE102005042822A1 (de) | 2007-03-22 |
US20080255272A1 (en) | 2008-10-16 |
CN1927969B (zh) | 2011-03-02 |
WO2007028661A1 (de) | 2007-03-15 |
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