JP5606321B2 - 耐チッピング性の高い層の製造方法 - Google Patents
耐チッピング性の高い層の製造方法 Download PDFInfo
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- JP5606321B2 JP5606321B2 JP2010533468A JP2010533468A JP5606321B2 JP 5606321 B2 JP5606321 B2 JP 5606321B2 JP 2010533468 A JP2010533468 A JP 2010533468A JP 2010533468 A JP2010533468 A JP 2010533468A JP 5606321 B2 JP5606321 B2 JP 5606321B2
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/50—Multilayers
- B05D7/56—Three layers or more
- B05D7/57—Three layers or more the last layer being a clear coat
- B05D7/577—Three layers or more the last layer being a clear coat some layers being coated "wet-on-wet", the others not
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- 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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- 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
- B05D2202/10—Metallic substrate based on Fe
-
- 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
- B05D2601/00—Inorganic fillers
- B05D2601/20—Inorganic fillers used for non-pigmentation effect
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- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Description
従来技術を考慮して得られる本発明の課題は、とりわけ環境的に有利な水性被覆材料ベースであり、損傷形成が明らかに低減され、とりわけ金属とKTLの間の境界面でのOEM層接合の層剥離が明らかに低減され、ひいてはチッピング負荷後に露出する基板表面が明らかに低減されている、耐チッピング性の被覆の提供である。
本発明による方法で使用される被覆剤は、本発明で重要な成分として少なくとも1つの塗膜形成性ポリマー(P)を含み、この際に被覆剤の製造において、平均粒子直径(D)(球状のフレークではない場合には、粒子の最長の面積対角線の粒子直径に相応する)対、平均粒子厚さ(d)の比D/dが>50であり、かつその電荷が、一価帯電性有機対イオン(OG)によって少なくとも部分的に補償される、荷電性無機粒子(AT)を被覆剤の不揮発性含分に対して0.1〜30質量%加える。
の混合水酸化物である。
製造例1:ヒドロタルサイトの合成及び変性
4−アミノベンゼンスルホン酸(4−absa)の水溶液0.21mol、MgCl2・6H2O(0.52モル)とAlCl3・6H2O(0.26mol)とから成る水性混合物を、室温で窒素雰囲気下、かつ常に撹拌しながら3時間にわたって添加し、この際にカチオンの計量供給量は、4−absa−対イオン対三価のAlカチオンのモル比が、4:1になるように選択する。この際にpH値は、3モルのNaOH溶液を添加することにより、pH=10で一定に保つ。
実施例1に従って製造されたヒドロタルサイト懸濁液16.1gを撹拌しながら、固体含分40質量%の水性ポリウレタン分散液(CYTEC Corp.社のDAOTAN VTW 1225、DIN EN ISO 4629によるとOH価は45、そして酸価はDIN EN ISO 3682によると40mgKOH/g)88.9gに加え、ヒドロタルサイト懸濁液が完全に溶解されているようにする(視覚的所見)。
実施例に従って製造される本発明による被覆剤を、前処理され、かつカソード電着塗料で予備被覆された鋼板(Chemetall社の鋼板:焼かれたカソード電着塗料の厚さ:21+/−2μm、基材の厚さ:750μm)にスプレーで適用する(Koehne社の自動コーター)。本発明による被覆剤から得られる層を20分間、140℃で硬化させ、この際に30+/−3μmの乾燥膜厚が生じる。焼いた被覆剤の断面のTEM撮像の評価により、分散されたヒドロタルサイト粒子の平均粒子直径(D)対その平均粒子厚さ(d)の比(D/d)は、約200である。
前述のように製造されて被覆された鋼板を、DIN 55996-1に従って耐チッピング試験に供し、この際にその都度冷却された鉄の粉粒体(粒子直径4〜5mm、Wuerth社、Bad Friedrichshall在)500gを利用し、そして衝撃装置(Erichsen社のModell 508 VDA)は2barの空気圧に調整する。
Claims (12)
- 耐蝕層、サーフェーサー層、及び最終的なトップコートから成る、OEM層構造の耐チッピング性を向上させる方法において、上記層のうち少なくとも1つを製造するために使用される、少なくとも1つの塗膜形成性ポリマー(P)を含む被覆剤中に、
平均粒子直径(D)対、平均粒子厚さ(d)の比D/dが>50であり、かつその電荷が、一価帯電性有機対イオン(OG)によって少なくとも部分的に補償される、荷電性無機粒子(AT)を、被覆剤の不揮発性含分に対して0.1〜30質量%加え、
前記被覆剤を塗布し、そして最終的に硬化させる方法であって、前記無機粒子(AT)が正に帯電されており、前記被覆剤が水性であり、かつ、荷電性無機粒子(AT)が、被覆剤への導入の際に水性懸濁液中に存在する、前記方法。 - 前記無機粒子(AT)中で、合成条件由来の対イオンが少なくとも15mol%、有機対イオン(OG)により置き換えられていることを特徴とする、請求項1に記載の方法。
- 被覆剤中のポリマー(P)が、少なくとも1つの水分散可能なポリマー(WP)を含むことを特徴とする、請求項1又は2に記載の方法。
- 被覆剤中のポリマー(P)が、少なくとも1つの架橋可能な官能基(a)を含むことを特徴とする、請求項1から4までのいずれか1項に記載の方法。
- 前記被覆剤が少なくとも2つの架橋可能な官能基(b)を有する架橋剤(V)を含み、当該架橋剤が、被覆剤の硬化の際にポリマーPの官能基(a)と反応して共有結合を形成することを特徴とする、請求項1から5までのいずれか1項に記載の方法。
- 被覆剤中に、それぞれ被覆剤の不揮発性成分に対して、ポリマーPを含む結合剤10〜95質量%、及び架橋剤(V)5〜50質量%が含まれていることを特徴とする、請求項1から6までのいずれか1項に記載の方法。
- 一価帯電性有機対イオン(OG)が少なくとも1つの架橋可能な官能基(c)を有し、当該官能基(c)が、被覆剤の硬化の際に官能基(a)及び/又は(b)と反応して共有結合を形成することを特徴とする、請求項1から7までのいずれか1項に記載の方法。
- 被覆剤により製造される層が、硬化後に5〜75μmの乾燥膜厚を有することを特徴とする、請求項1から8までのいずれか1項に記載の方法。
- OEM層構造のサーフェーサー層を製造するために、前記被覆剤を使用することを特徴とする、請求項1から9までのいずれか1項に記載の方法。
- OEM層構造の製造の際にサーフェーサー層を硬化させ、さらなる工程でベースコート層を、そして中間フラッシュオフ後に最終的なクリアコート層を塗布し、そして最後にベースコート層とクリアコート層を一緒に硬化させることを特徴とする、請求項10に記載の方法。
- OEM層構造の製造の際にサーフェーサー層を塗布し、そしてフラッシュオフし、さらなる工程でベースコート層を、そして中間フラッシュオフ後に最終的なクリアコート層を塗布し、そして最後にサーフェーサー層、ベースコート層、及びクリアコート層を一緒に硬化させることを特徴とする、請求項10に記載の方法。
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DE102007054247A DE102007054247A1 (de) | 2007-11-14 | 2007-11-14 | Verfahren zur Herstellung hochschlagfester Schichten |
PCT/EP2008/009324 WO2009062620A1 (de) | 2007-11-14 | 2008-11-06 | Verfahren zur herstellung hochschlagfester schichten |
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DE102009021071A1 (de) * | 2009-05-13 | 2010-11-18 | Basf Coatings Ag | Effektwasserbasislacke mit verbesserten optischen Eigenschaften |
ITMI20111921A1 (it) | 2011-10-24 | 2013-04-25 | Nice Filler S R L | Processo di preparazione di una composizione polimerica comprendente idrotalciti intercalate con molecole attive, composizione cosi' ottenuta e articoli formati comprendenti la stessa. |
EP2817103B1 (de) * | 2012-02-21 | 2016-04-20 | BASF Coatings GmbH | Mehrschicht-beschichtung mit einer füllerschicht aus einem nicht-wässrigen beschichtungsstoff enthaltend mindestens zwei verschiedene polyester |
PT106256A (pt) | 2012-04-17 | 2013-10-17 | Chemetall Gmbh | Processo de revestimento de superfícies metálicas com revestimentos contendo partículas de hidróxido duplo lamelar. |
WO2014111539A1 (de) * | 2013-01-17 | 2014-07-24 | Basf Coatings Gmbh | Verfahren zur herstellung einer korrosionsschutzbeschichtung |
US20180117629A1 (en) * | 2015-04-17 | 2018-05-03 | Akzo Nobel Coatings International B.V. | Coating Method |
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WO1998002491A1 (en) * | 1996-07-15 | 1998-01-22 | Eastman Chemical Company | Aqueous dispersion |
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AU6027700A (en) | 1999-07-13 | 2001-01-30 | Nederlandse Organisatie Voor Toegepast- Natuurwetenschappelijk Onderzoek Tno | Coloring pigment |
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US20100323103A1 (en) | 2010-12-23 |
EP2209564B1 (de) | 2011-09-14 |
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JP2011502770A (ja) | 2011-01-27 |
US9492843B2 (en) | 2016-11-15 |
CN101918150B (zh) | 2013-11-27 |
DE102007054247A1 (de) | 2009-05-20 |
EP2209564A1 (de) | 2010-07-28 |
CN101918150A (zh) | 2010-12-15 |
WO2009062620A1 (de) | 2009-05-22 |
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