JP4389067B2 - 水分散型防錆塗料用組成物 - Google Patents
水分散型防錆塗料用組成物 Download PDFInfo
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- JP4389067B2 JP4389067B2 JP2003306023A JP2003306023A JP4389067B2 JP 4389067 B2 JP4389067 B2 JP 4389067B2 JP 2003306023 A JP2003306023 A JP 2003306023A JP 2003306023 A JP2003306023 A JP 2003306023A JP 4389067 B2 JP4389067 B2 JP 4389067B2
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- Prior art keywords
- water
- weight
- zirconium
- dispersed
- parts
- Prior art date
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- Expired - Lifetime
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Description
[1] 1価の金属イオン及び/又はアミンで中和されたアイオノマー樹脂(A)、カルボキシル基との反応性を有する水溶性ジルコニウム化合物及び/又は水溶性チタン化合物(B)及びカルボキシル基含有の自己乳化性ポリウレタン樹脂(C)を必須成分として含有する組成物であり、該組成物の粒子の平均粒径が0.01〜5μmであり、かつ、該組成物が水分散しており、上記水溶性ジルコニウム化合物が、炭酸ジルコニウムアンモニウム、炭酸ジルコニウムカリウム、硝酸ジルコニウム、酢酸ジルコニウム、塩基性炭酸ジルコニウム、ジルコニウムテトラアセチルアセトネート、ジルコニウムモノアセチルアセトネート、ジルコニウムビスアセチルアセトネートから選択される少なくとも1種であり、上記水溶性チタン化合物が、ジヒドロキシチタンラクテート、ジイソプロポキシチタンビス(トリエタノールアミネート)から選択させる少なくとも1種であることを特徴とする
水分散型防錆塗料用組成物。
[2] 水分散型防錆塗料用組成物がノンクロメート鋼板用防錆塗料用である[1]記載の水分散型防錆塗料用組成物。
[3] アイオノマー樹脂(A)100重量部に対して、水溶性ジルコニウム化合物及び/又は水溶性チタン化合物(B)を0.5〜20重量部、カルボキシル基含有の自己乳化性ポリウレタン樹脂(C)を5〜50重量部を割合で含有する[1]記載の水分散型防錆塗料用組成物。
[4] アイオノマー樹脂(A)がエチレンとアクリル酸及び/又はメタクリル酸の共重合体であって、アクリル酸及び/又はメタクリル酸を5〜40重量%含有し、かつ、アクリル酸及び/又はメタクリル酸が1価の金属イオンで20〜90%中和されていることを特徴とする[1]記載の水分散型防錆塗料用組成物。
[5] アイオノマー樹脂(A)がエチレンとアクリル酸及び/又はメタクリル酸の共重合体であって、アクリル酸及び/又はメタクリル酸を5〜40重量部含有し、かつ、アイオノマー樹脂(A)のアクリル酸及び/又はメタクリル酸がアミンで50%以上中和されている[1]記載の水分散型防錆塗料用組成物。
[6] アクリル酸及び/又はメタクリル酸の中和に使用されるアミンがアンモニア、トリメチルアミン、モノエタノールアミンである請求項1記載の水分散型防錆塗料用組成物。
[7] 水溶性ジルコニウム化合物及び/又は水溶性チタン化合物(B)が、炭酸ジルコニウムアンモニウム及び/又はジイソプロポキシチタンビス(トリエタノールアミネート)である[1]記載の水分散型防錆塗料用組成物。
[8] カルボキシル基含有の自己乳化性ポリウレタン樹脂(C)のソフトセグメントが
ポリエーテル系ポリオールを含有する[1]記載の水分散型防錆塗料用組成物。
Li+、Na+、K+、Rb+などを挙げることができる。また、アイオノマー樹脂を中和するアミンとしては、アンモニア、モノメチルアミン、ジメチルアミン、トリメチルアミン、モノエチルアミン、ジエチルアミン、トリメチルアミン、モノプロピルアミン、ジプロピルアミン、モノブチルアミン、ジブチルアミン、モルフォリン、ピペリジン、モノエタノール、ジエタノールアミン、トリエタノールアミンなどを挙げることができる。これらの中でも、Na、K、アンモニア、トリメチルアミン、モノエタノールアミンが好ましい。また、1価の金属イオンとアミンを併用することもできる。
B)のうちの、カルボキシル基と反応し得る水溶性チタン化合物としては、ジヒドロキシ
チタンラクテートやジイソプロポキシチタンビス(トリエタノールアミネート)[(C6H14O3N)2Ti(C3H7O)2 ]等のチタネートアミン付加物を挙げることができる。これらの中で、ジヒドロキシチタンラクテートとジイソプロポキシチタンビス(トリエタノールアミネート)が好ましく、特に、ジイソプロポキシチタンビス(トリエタノールアミネート)が好ましい。
以下、実施例及び比較例により本発明をより具体的に説明するが、本発明はこれらの実施例に限定されるものではない。
[評価方法]
鋼板としては電気亜鉛メッキ鋼板(メッキ付着量:20g/m2)を用い、この鋼板に焼き付けた塗膜の耐アルカリ性と耐粘着テープ剥離性を以下に記す方法で評価した。
耐アルカリ性:
32gの脱脂剤(日本パーカライジング社製、ファインクリーナーL4460A:20g、L4460B12g)を水で1Lに希釈して処理液(pH:約13)を調製する。以下の実施例で示した防錆処理剤を鋼板に塗布後焼き付けた防錆鋼板試料を60℃の上記処理液に2分間浸せきする。そして、水洗して60℃で1時間乾燥した後、塗膜の状態を観察して評点をつける。引き続き、SST試験(5%NaCl水溶液噴霧、35℃)を120時間行ってから発錆面積を測定する。
耐粘着テープ剥離性:
防錆処理剤を焼き付けた防錆鋼板試料に粘着テープ(製品名:SLIONE TAPE)を貼り付け、恒温恒湿槽(温度:40℃、湿度:90%)中で48時間養生した後取り出し、1日後に粘着テープを一気に剥がしてその跡を観察して評点をつける。
重合体(MFR(190℃)=1.1g/10分、メタクリル酸含量20重量%、中和度50%)260g、水740gを入れて150℃に昇温した後、2時間攪拌して水分散体を得た。得られた水分散体は、固形分濃度26.5%、粘度125mPa・s、pH10.0、平均粒径0.02μmであった。この水分散体100重量部に炭酸ジルコニウムアンモニウム(第一稀元素化学工業製、商品名:ベイコート20)を3重量部、水性ポリウ
レタン(三井化学製、商品名:UD170N)を25重量部、コロイダルシリカ(日産化学製、商品名:スノーテックス)を30重量部、シランカップリング剤(信越シリコーン製、商品名:KBE−403)1重量部とを配合して防錆処理剤を調製した。
重合体(MFR(190℃)=0.9g/10分、メタクリル酸含量20重量%、中和度20%)260g、水740gを入れて150℃に昇温した後、2時間攪拌して水分散体を得た。得られた水分散体は、固形分濃度26.5%、粘度125mPa・s、pH10.0、平均粒径0.02μmであった。この水分散体100重量部にジイソプロポキシチタンビス(トリエタノールアミネート)(松本製薬工業製、商品名:オルガチックスTC−400)を15重量部、水性ポリウレタン(三井化学製、商品名:UD500)を20重量部、コロイダルシリカ(日産化学製、商品名:スノーテックス)を30重量部、シランカップリング剤(信越シリコーン製、商品名:KBE−403)1重量部とを配合して防錆処理剤を調製した。
炭酸ジルコニウムアンモニウムは添加せず、UD500を30重量部添加した以外は実施例1と同様にして防錆鋼板試料を調製し、耐アルカリ性と耐粘着テープ剥離性を評価した。
水性ポリウレタンを添加しない以外は実施例1と同様にして防錆鋼板試料を調製し、耐アルカリ性と耐粘着テープ剥離性を評価した。
Claims (8)
- 1価の金属イオン及び/又はアミンで中和されたアイオノマー樹脂(A)、カルボキシル基との反応性を有する水溶性ジルコニウム化合物及び/又は水溶性チタン化合物(B)及びカルボキシル基含有の自己乳化性ポリウレタン樹脂(C)を必須成分として含有する組成物であり、
該組成物の粒子の平均粒径が0.01〜5μmであり、かつ、該組成物が水分散しており、
上記水溶性ジルコニウム化合物が、炭酸ジルコニウムアンモニウム、炭酸ジルコニウムカリウム、硝酸ジルコニウム、酢酸ジルコニウム、塩基性炭酸ジルコニウム、ジルコニウムテトラアセチルアセトネート、ジルコニウムモノアセチルアセトネート、ジルコニウムビスアセチルアセトネートから選択される少なくとも1種であり、
上記水溶性チタン化合物が、ジヒドロキシチタンラクテート、ジイソプロポキシチタンビス(トリエタノールアミネート)から選択させる少なくとも1種である
ことを特徴とする水分散型防錆塗料用組成物。 - 水分散型防錆塗料用組成物がノンクロメート鋼板用防錆塗料用である請求項1記載の水分散型防錆塗料用組成物。
- アイオノマー樹脂(A)100重量部に対して、水溶性ジルコニウム化合物及び/又は水溶性チタン化合物(B)を0.5〜20重量部、カルボキシル基含有の自己乳化性ポリウレタン樹脂(C)を5〜50重量部の割合で含有する請求項1記載の水分散型防錆塗料用組成物。
- アイオノマー樹脂(A)がエチレンとアクリル酸及び/又はメタクリル酸の共重合体であって、アクリル酸及び/又はメタクリル酸を5〜40重量%含有し、かつ、アクリル酸及び/又はメタクリル酸が1価の金属イオンで20〜90%中和されていることを特徴とする請求項1記載の水分散型防錆塗料用組成物。
- アイオノマー樹脂(A)がエチレンとアクリル酸及び/又はメタクリル酸の共重合体であって、アクリル酸及び/又はメタクリル酸を5〜40重量部含有し、かつ、アイオノマー樹脂(A)のアクリル酸及び/又はメタクリル酸がアミンで50%以上中和されている請求項1記載の水分散型防錆塗料用組成物。
- アクリル酸及び/又はメタクリル酸の中和に使用されるアミンがアンモニア、トリメチルアミン、モノエタノールアミンである請求項1記載の水分散型防錆塗料用組成物。
- 水溶性ジルコニウム化合物及び/又は水溶性チタン化合物(B)が、炭酸ジルコニウムアンモニウム及び/又はジイソプロポキシチタンビス(トリエタノールアミネート)である請求項1記載の水分散型防錆塗料用組成物。
- カルボキシル基含有の自己乳化性ポリウレタン樹脂(C)のソフトセグメントがポリエーテル系ポリオールである請求項1記載の水分散型防錆塗料用組成物。
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JP2009035622A (ja) * | 2007-08-01 | 2009-02-19 | Dic Corp | 水性塗料用樹脂組成物 |
US8841379B2 (en) | 2011-11-07 | 2014-09-23 | E I Du Pont De Nemours And Company | Method to form an aqueous dispersion of an ionomer-polyolefin blend |
JP5478588B2 (ja) * | 2011-11-18 | 2014-04-23 | 株式会社神戸製鋼所 | 耐食性及び導電性に優れた表面処理金属板 |
DE102012223355A1 (de) * | 2012-12-17 | 2014-06-18 | Henkel Ag & Co. Kgaa | Hochvernetzende Lackformulierung für Doseninnenflächen |
DE102012223356A1 (de) * | 2012-12-17 | 2014-06-18 | Henkel Ag & Co. Kgaa | Verfahren zur Herstellung beschichteter Dosendeckel |
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