JP3274401B2 - Room temperature curable two-part aqueous epoxy resin coating composition - Google Patents

Room temperature curable two-part aqueous epoxy resin coating composition

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Publication number
JP3274401B2
JP3274401B2 JP34857997A JP34857997A JP3274401B2 JP 3274401 B2 JP3274401 B2 JP 3274401B2 JP 34857997 A JP34857997 A JP 34857997A JP 34857997 A JP34857997 A JP 34857997A JP 3274401 B2 JP3274401 B2 JP 3274401B2
Authority
JP
Japan
Prior art keywords
epoxy resin
water
coating composition
resin emulsion
room temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP34857997A
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Japanese (ja)
Other versions
JPH11166153A (en
Inventor
一郎 安川
千敬 田中
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shinto Paint Co Ltd
Original Assignee
Shinto Paint Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shinto Paint Co Ltd filed Critical Shinto Paint Co Ltd
Priority to JP34857997A priority Critical patent/JP3274401B2/en
Publication of JPH11166153A publication Critical patent/JPH11166153A/en
Application granted granted Critical
Publication of JP3274401B2 publication Critical patent/JP3274401B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【発明の属する技術分野】本発明は鉄構造物の防食塗装
に用いられる常温硬化性二液形水系エポキシ樹脂塗料組
成物に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cold-setting two-pack type water-based epoxy resin coating composition used for anticorrosion coating of iron structures.

【0002】[0002]

【従来の技術】エポキシ樹脂とポリアミン化合物からな
るエポキシ樹脂塗料はその優れた塗膜性能を活かして鉄
構造物の防食用途に広く使用されている。ただし一般に
用いられるのは塗料中あるいは希釈のために芳香族系炭
化水素を主とする有機溶剤を用いている。しかし近年低
VOC化の要望が強くなり、大部分の有機溶剤を水に置
き換えた水系タイプのものが開発されつつある。これは
エポキシ樹脂については、樹脂骨格中に親水性の官能基
を付加して自己乳化性を付与したり、あるいは乳化剤を
混合して強制的にエマルション化したものである。また
ポリアミン化合物についても水可溶性を高めたものが用
いられる。
2. Description of the Related Art Epoxy resin coatings comprising an epoxy resin and a polyamine compound have been widely used for anticorrosion of iron structures by utilizing their excellent coating properties. However, in general, an organic solvent mainly containing an aromatic hydrocarbon is used in a paint or for dilution. However, in recent years, there has been an increasing demand for a low VOC, and an aqueous type in which most of the organic solvent is replaced with water is being developed. In the epoxy resin, a hydrophilic functional group is added to the resin skeleton to impart self-emulsifying properties, or an emulsifier is mixed and forcibly emulsified. As the polyamine compound, those having increased water solubility are used.

【0003】[0003]

【発明が解決しようとする課題】しかし上記の自己乳化
性エポキシ樹脂やエポキシ樹脂エマルションと水可溶性
ポリアミン化合物を反応させて得られた塗膜は、膜中に
存在する親水性基やあるいは残存する乳化剤のために耐
水性が溶剤タイプのエポキシ樹脂塗料から得られた塗膜
と比較して劣るものとなっている。改善のために乳化剤
やポリアミン化合物の改良検討が試みられているが、な
お不十分な状態にとどまっている。
However, a coating film obtained by reacting the above-mentioned self-emulsifying epoxy resin or epoxy resin emulsion with a water-soluble polyamine compound has a hydrophilic group existing in the film or a residual emulsifier. Therefore, the water resistance is inferior to that of a coating film obtained from a solvent type epoxy resin paint. Efforts have been made to improve emulsifiers and polyamine compounds for improvement, but they are still insufficient.

【0004】[0004]

【課題を解決するための手段】溶剤系塗料では耐水性や
他の防食性能を向上させるための手段として、シランカ
ップリング剤を塗料中に配合することが一般的におこな
われている。しかしこれらのシランカップリング剤は水
中では短時間で加水分解反応と縮合反応を経てシロキサ
ン結合を形成し活性を消失してしまう。したがって水系
エポキシ樹脂塗料ではシランカップリング剤を添加して
もその耐水性向上効果はごく初期の段階しか期待できな
い。そこでわれわれは水系エポキシ樹脂塗料の耐水性を
向上させるために水中でも安定なアルコキシシリル基を
有する化合物について鋭意研究を重ねた結果、本発明の
アクリルシリコン樹脂エマルションを用いると長期間効
果を持続することを見いだし、この知見に基づいて本発
明を完成した。すなわち、本発明は水で希釈可能な自己
乳化性エポキシ樹脂あるいはエポキシ樹脂エマルション
(a)、水溶性ポリアミン化合物(b)、アクリルシリ
コン樹脂エマルション(c)を含有する常温硬化性二液
形水系エポキシ樹脂塗料組成物であって、アクリルシリ
コン樹脂エマルション(c)が、アルコキシシリル基を
有するビニルモノマー5〜10%と、グリシジル基を有
するビニルモノマー5〜10%と、残部その他のビニル
モノマーを共重合して得られることを特徴とする常温硬
化性二液形水系エポキシ樹脂塗料組成物である。
As a means for improving the water resistance and other anticorrosive properties of a solvent-based coating, it is common practice to incorporate a silane coupling agent into the coating. However, these silane coupling agents undergo a hydrolysis reaction and a condensation reaction in water in a short time to form a siloxane bond and lose their activity. Therefore, even if a silane coupling agent is added to a water-based epoxy resin coating, the effect of improving the water resistance can be expected only at a very early stage. Therefore, we conducted intensive studies on compounds having an alkoxysilyl group that is stable even in water in order to improve the water resistance of water-based epoxy resin paints. And completed the present invention based on this finding. That is, the present invention provides a self-emulsifiable epoxy resin or an epoxy resin emulsion dilutable with water (a), a water-soluble polyamine compound (b), and an acrylic silicone resin emulsion (c). A coating composition, wherein an acrylic silicone resin emulsion (c) is obtained by copolymerizing 5 to 10% of a vinyl monomer having an alkoxysilyl group, 5 to 10% of a vinyl monomer having a glycidyl group, and the remaining vinyl monomer. It is a room-temperature-curable two-part water-based epoxy resin coating composition characterized by being obtained by:

【0005】[0005]

【発明の実施の形態】本発明の水系エポキシ樹脂塗料
は、水で希釈可能な自己乳化性エポキシ樹脂あるいはエ
ポキシ樹脂エマルション(a)、水溶性ポリアミン化合
物(b)、アクリルシリコン樹脂エマルション(c)を
必須成分として含有するものであるが、使用に際しては
水溶性ポリアミン樹脂(b)に必要により各種顔料類、
添加剤類を分散、混合した主剤成分と、水で希釈可能な
自己乳化性エポキシ樹脂あるいはエポキシ樹脂エマルシ
ョン(a)にアクリルシリコン樹脂エマルション(c)
を混合した硬化剤成分の二液として調製される。そして
塗装に先立って上記の主剤成分と硬化剤成分を所定の割
合で混合撹拌して、均一な混合液とし、必要に応じて水
で希釈して塗装適性粘度に調整し、被塗物に対してスプ
レー、はけ、あるいはローラーばけを用いて塗装するも
のである。
BEST MODE FOR CARRYING OUT THE INVENTION The water-based epoxy resin paint of the present invention comprises a water-dilutable self-emulsifying epoxy resin or an epoxy resin emulsion (a), a water-soluble polyamine compound (b), and an acrylic silicone resin emulsion (c). Although it is contained as an essential component, when used, the water-soluble polyamine resin (b) may contain various pigments, if necessary.
A main component obtained by dispersing and mixing additives, a self-emulsifying epoxy resin or an epoxy resin emulsion dilutable with water (a) and an acrylic silicone resin emulsion (c)
Is prepared as a two-component curing agent component obtained by mixing Prior to coating, the main component and the hardener component are mixed and stirred at a predetermined ratio to form a uniform mixture, and if necessary, diluted with water to adjust the coating to a suitable viscosity. Spray, brush, or roller brush is used for painting.

【0006】本発明に用いる(a)水で希釈可能な自己
乳化性エポキシ樹脂としては、1分子中にエポキシ基を
2個以上有する液状エポキシ樹脂であり、さらに水酸基
やカルボキシル基を持つ側鎖を導入して自己乳化性を付
与した、数平均分子量約380〜450、エポキシ当量
が約190〜210のものが使用できる。
The (a) water-dilutable self-emulsifying epoxy resin used in the present invention is a liquid epoxy resin having two or more epoxy groups in one molecule, and further has a side chain having a hydroxyl group or a carboxyl group. Those having a number-average molecular weight of about 380 to 450 and an epoxy equivalent of about 190 to 210 to which self-emulsifying property is imparted by introduction are usable.

【0007】またエポキシ樹脂エマルションとしては1
分子中にエポキシ基を2個以上有する液状あるいは固形
のエポキシ樹脂を適当な乳化剤を用いて強制的に乳化、
分散させたものであり、数平均分子量約370〜400
0,エポキシ当量約185〜2000のものが使用でき
る。またエポキシ樹脂エマルションの固形分としては約
40〜60重量%のものが使いやすい。これらに用いら
れるエポキシ樹脂はビスフェノールA型、ビスフェノー
ルF型、ビスフェノールAD型、あるいはこれらを変性
したものが使用できる。
As an epoxy resin emulsion, 1
Forcibly emulsify a liquid or solid epoxy resin having two or more epoxy groups in the molecule using an appropriate emulsifier,
And a number average molecular weight of about 370 to 400
Those having a 0, epoxy equivalent of about 185 to 2000 can be used. The epoxy resin emulsion having a solid content of about 40 to 60% by weight is easy to use. The epoxy resin used for these may be bisphenol A type, bisphenol F type, bisphenol AD type, or a modified version thereof.

【0008】ただし防食用塗料として用いるのには、塗
装作業性や可使時間の点からエポキシ樹脂エマルション
のほうがより好適である。
However, epoxy resin emulsions are more suitable for use as anticorrosive paints in terms of coating workability and pot life.

【0009】上記(b)水溶性ポリアミン化合物として
は脂肪族ポリアミン類、芳香族ポリアミン類、脂環族ポ
リアミン類、分子末端に少なくとも1個の第1級アミノ
基を有するポリアミド類などに各種変性を施し水溶性と
したもの、あるいは第1級アミノ基をもったビニルモノ
マーを共重合したアクリルアミンエマルションなどが使
用できる。
As the water-soluble polyamine compound (b), various modifications are made to aliphatic polyamines, aromatic polyamines, alicyclic polyamines, polyamides having at least one primary amino group at the molecular terminal, and the like. Water-soluble ones, or acrylamine emulsions obtained by copolymerizing vinyl monomers having primary amino groups can be used.

【0010】上記(b)水溶性ポリアミン化合物の含有
割合は前記エポキシ樹脂(a)中のエポキシ基1当量に
対して水溶性ポリアミン化合物の活性水素当量が0.5
〜1.5当量、好ましくは0.7〜1.0当量になるよ
うな割合で用いるのが望ましい。0.5当量より少ない
場合には硬化が不十分となり、1.5当量より多い場合
には硬化塗膜に粘着が残り、防食性が著しく低下するこ
とがあるので望ましくない。
The content of the water-soluble polyamine compound (b) is such that the active hydrogen equivalent of the water-soluble polyamine compound is 0.5 with respect to 1 equivalent of the epoxy group in the epoxy resin (a).
It is desirable to use at a ratio such that the amount becomes to 1.5 equivalents, preferably 0.7 to 1.0 equivalents. When the amount is less than 0.5 equivalent, curing is insufficient, and when the amount is more than 1.5 equivalent, adhesion is left on the cured coating film, and corrosion resistance may be remarkably reduced, which is not desirable.

【0011】上記(c)アクリルシリコン樹脂エマルシ
ョンとしては、アルコキシシリル基を有するビニルモノ
マー約5〜10%とグリシジル基を有するビニルモノマ
ー約5〜10%と残部その他のアクリルモノマーやスチ
レンなどのビニルモノマーとを共重合して得られるアク
リルシリコン樹脂エマルションであり、樹脂のガラス転
移温度が−5〜5℃、固形分が約30〜50%のものが
望ましい。樹脂のガラス転移点が−5℃よりも低いと形
成された塗膜に粘着が残ることがあり、5℃よりも高い
と低温時の造膜性に問題を生じることがあるので望まし
くない。また固形分は30重量%よりも低いと混合時に
塗料全体の固形分が下がるため添加量に制限を生じ、5
0重量%を越えるとエマルション自体の粘度が高くなり
混合塗料の作業性を低下させるので望ましくない。
The acrylic silicone resin emulsion (c) includes about 5 to 10% of a vinyl monomer having an alkoxysilyl group, about 5 to 10% of a vinyl monomer having a glycidyl group, and the remaining vinyl monomer such as an acrylic monomer or styrene. And an acrylic silicone resin emulsion obtained by copolymerizing the above with a resin having a glass transition temperature of -5 to 5C and a solid content of about 30 to 50%. If the glass transition point of the resin is lower than -5 ° C, adhesion may remain in the formed coating film, and if the glass transition point is higher than 5 ° C, a problem may occur in the film forming property at low temperatures, which is not desirable. If the solid content is less than 30% by weight, the solid content of the whole coating material is reduced during mixing, so that the amount of addition is limited, and
If the amount exceeds 0% by weight, the viscosity of the emulsion itself becomes high and the workability of the mixed paint is lowered, which is not desirable.

【0012】(c)アクリルシリコン樹脂エマルション
は、事前に(a)水で希釈可能な自己乳化性エポキシ樹
脂あるいはエポキシ樹脂エマルションに混合して用い
る。混合割合はエポキシ樹脂固形分100重量部に対し
てアクリルシリコン樹脂エマルションの固形分が2〜1
0重量部となるように混合する。混合割合が2重量部よ
りも少ない場合には耐水性向上の効果がなく、また10
重量部よりも多い場合には水系エポキシ樹脂塗料全体の
粘度が上昇し、塗装作業性に問題を生じることがあるの
で望ましくない。
(C) The acrylic silicone resin emulsion is used by being mixed in advance with (a) a self-emulsifying epoxy resin or epoxy resin emulsion which can be diluted with water. The mixing ratio is such that the solid content of the acrylic silicone resin emulsion is 2-1 to 100 parts by weight of the epoxy resin solid content.
Mix to 0 parts by weight. When the mixing ratio is less than 2 parts by weight, there is no effect of improving the water resistance.
If the amount is more than the weight part, the viscosity of the whole water-based epoxy resin coating increases, which may cause a problem in coating workability, which is not desirable.

【0013】本発明における水系エポキシ樹脂塗料には
上記必須成分のほかに必要に応じて着色顔料、体質顔
料、防錆顔料などの顔料類、分散剤、湿潤剤、消泡剤、
たれ止め剤、増粘剤、レベリング剤、pH調整剤、防黴
剤、凍結防止剤などの添加剤類を併用してもよい。また
塗装作業性や乾燥性を調整するために水溶性あるいは非
水溶性の有機溶剤を併用してもよい。
In the water-based epoxy resin paint of the present invention, in addition to the above essential components, if necessary, pigments such as coloring pigments, extender pigments, rust preventive pigments, dispersants, wetting agents, defoamers,
Additives such as anti-sagging agents, thickeners, leveling agents, pH adjusters, fungicides, and antifreezing agents may be used in combination. In addition, a water-soluble or water-insoluble organic solvent may be used in combination in order to adjust coating workability and drying property.

【0014】[0014]

【実施例】以下、実施例により本発明をさらに具体的に
説明するが、本発明はこれに限定されるものではない。
なお「部」および「%」は「重量部」および「重量%」
を示す。
EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.
“Parts” and “%” are “parts by weight” and “% by weight”
Is shown.

【0015】(1)アクリルシリコン樹脂エマルション
(c)の製造 γ−メタクリロキシプロピルトリメトキシシラン10
部、グリシジルメタクリレート10部、n−ブチルアク
リレート、メチルメタクリレート、スチレンの混合物
を、ノニオン系乳化剤およびアニオン系乳化剤を溶解さ
せた脱イオン水中に滴下し過硫酸アンモニウムを重合開
始剤として乳化重合を行い、重量平均分子量約30万、
固形分40%のアクリルシリコン樹脂エマルションを得
た。
(1) Production of acrylic silicone resin emulsion (c) γ-methacryloxypropyltrimethoxysilane 10
Parts, glycidyl methacrylate 10 parts, a mixture of n-butyl acrylate, methyl methacrylate, and styrene was dropped into deionized water in which a nonionic emulsifier and an anionic emulsifier were dissolved, and emulsion polymerization was performed using ammonium persulfate as a polymerization initiator, and Average molecular weight about 300,000,
An acrylic silicone resin emulsion having a solid content of 40% was obtained.

【0016】(2)主剤の製造 2リットル容器に、脱イオン水37部、消泡剤(注1)
0.2部、分散剤(注2)3部、25%アンモニア水
0.1部、エチレングリコール0.5部、酸化チタン2
0部、ケイ酸マグネシウム20部、二酸化ケイ素20
部、リン酸亜鉛(注3)10部を順次仕込みディスパー
で混合しサンドミルにて分散(JIS K−5400分
散度B法30μm以下)した後、(b)水溶性ポリアミ
ン化合物(注4)25部、10%亜硝酸ソーダ水溶液
0.3部を添加しディスパーで混合・撹拌して主剤を得
た。
(2) Production of main agent In a 2 liter container, 37 parts of deionized water and an antifoaming agent (Note 1)
0.2 part, dispersant (Note 2) 3 parts, 25% aqueous ammonia 0.1 part, ethylene glycol 0.5 part, titanium oxide 2
0 parts, magnesium silicate 20 parts, silicon dioxide 20
Parts, zinc phosphate (Note 3) 10 parts were sequentially charged and mixed by a disper and dispersed by a sand mill (JIS K-5400, dispersion method B: 30 μm or less), and then (b) 25 parts of a water-soluble polyamine compound (Note 4) Then, 0.3 part of a 10% aqueous sodium nitrite solution was added, and the mixture was stirred and mixed with a disper to obtain a main ingredient.

【0017】(注1)「ノプコ8034」(サンノプコ
社製) (注2)「BYK−180」(BYK Chemie社
製) (注3)「LFボウセイZP−DL」(キクチカラー社
製) (注4)「EPI−CURE 8537−WY−60」
(油化シェル化学社製、固形分60%、水希釈性アミン
アダクト)
(Note 1) "Nopco 8034" (manufactured by San Nopco) (Note 2) "BYK-180" (manufactured by BYK Chemie) (Note 3) "LF Bosei ZP-DL" (manufactured by Kikuchi Color) (Note) 4) "EPI-CURE 8537-WY-60"
(Yuika Shell Chemical, solid content 60%, water-dilutable amine adduct)

【0018】(3)硬化剤(イ)の製造 (a)エポキシ樹脂エマルション(注5)100部と、
アクリルシリコン樹脂エマルション(c)12.5部を
混合し硬化剤(イ)とした。 (4)硬化剤(ロ)の製造 (a)エポキシ樹脂エマルション(注5)100部をと
り、これこれをそのままで硬化剤(ロ)とした。
(3) Production of a curing agent (a) (a) 100 parts of an epoxy resin emulsion (Note 5)
12.5 parts of an acrylic silicone resin emulsion (c) were mixed to obtain a curing agent (a). (4) Production of curing agent (b) (a) 100 parts of an epoxy resin emulsion (Note 5) was taken and used as it was as a curing agent (b).

【0019】(注5)「EPI−REZ 5522−W
Y−55」(油化シェル化学社製、固形エポキシ樹脂変
性物のエマルション、固形分53.5%、固形分のエポ
キシ当量550〜700)
(Note 5) "EPI-REZ 5522-W"
Y-55 "(manufactured by Yuka Shell Chemical Co., Ltd., emulsion of a modified solid epoxy resin, solid content: 53.5%, epoxy equivalent of solid content: 550 to 700)

【0020】実施例1〜2及び比較例1〜5 表1に示す組み合わせで次のようにして塗料を調製し
た。実施例1,比較例1、比較例2、比較例4は主剤と
硬化剤を表1に示す割合で混合・撹拌した。さらに比較
例2、比較例4については、シランカップリング剤A
(注6)、シランカップリング剤B(注7)を添加し混
合・攪拌した。一方実施例2については調製後20℃で
14日間保管した硬化剤(イ)を使用した。また、比較
例3については主剤にシランカップリング剤A(注6)
を事前に混合・撹拌して20℃で14日間保管した。比
較例5については、硬化剤(ロ)にシランカップリング
剤B(注7)を事前に混合・撹拌して20℃で14日間
保管した。塗装時にそれらを混合して使用した。
Examples 1 and 2 and Comparative Examples 1 to 5 Coatings were prepared in the combinations shown in Table 1 as follows. In Example 1, Comparative Example 1, Comparative Example 2, and Comparative Example 4, the main agent and the curing agent were mixed and stirred at the ratios shown in Table 1. Further, for Comparative Examples 2 and 4, the silane coupling agent A
(Note 6) The silane coupling agent B (Note 7) was added and mixed and stirred. On the other hand, for Example 2, the curing agent (a) stored at 20 ° C. for 14 days after preparation was used. In Comparative Example 3, silane coupling agent A (Note 6) was used as the main agent.
Was previously mixed and stirred and stored at 20 ° C. for 14 days. In Comparative Example 5, the silane coupling agent B (Note 7) was mixed and stirred in advance with the curing agent (b) and stored at 20 ° C. for 14 days. They were mixed and used during painting.

【0021】(注6)γ−(2−アミノエチル)アミノ
プロピルトリメトキシシラン (注7)γ−グリシドキシプロピルトリメトキシシラン
(Note 6) γ- (2-aminoethyl) aminopropyltrimethoxysilane (Note 7) γ-glycidoxypropyltrimethoxysilane

【0022】次にこれらの塗料を2×70×150mm
の鋼板上にエアスプレーで乾燥膜厚が100μmとなる
ように塗装し、20℃×65%RHの雰囲気で7日間乾
燥して各塗装板を得た。
Next, these paints were applied in a size of 2 × 70 × 150 mm.
Was coated by air spraying so as to have a dry film thickness of 100 μm, and dried in an atmosphere of 20 ° C. × 65% RH for 7 days to obtain each coated plate.

【0023】得られた各塗装板について下記の評価を行
った。結果を表1に示す。塗膜にナイフで素地に達する
ように交差する2本の対角線状に傷を入れ、JIS K
5400 9.1 塩水噴霧試験に240時間供した
後、該塗面の状態を観察した。
The following evaluations were performed on each of the obtained coated plates. Table 1 shows the results. Cut two diagonal lines across the coating with a knife to reach the substrate, JIS K
5400 9.1 After subjected to a salt spray test for 240 hours, the state of the coated surface was observed.

【0024】[0024]

【表1】 [Table 1]

【0025】 塗膜の状態 ○:ふくれ、さびが認められない。 △:直径1〜2mmのふくれや少しの点さびが認められる。 傷部の状態 ○:傷部の両側にふくれや塗膜の浮きは認められず、さびの状態 も大きくない。 △:傷部の両側に直径2〜3mmのふくれが認められる。 ×:傷部周辺の塗膜が浮き上がっている。State of coating film :: No blistering or rust is observed. Δ: Blisters having a diameter of 1 to 2 mm and slight rust are observed. Scratch condition ○: No swelling or lifting of the coating film was observed on both sides of the scratch, and the rust condition was not large. B: Blisters having a diameter of 2 to 3 mm are observed on both sides of the wound. ×: The coating film around the wound part is raised.

【0026】[0026]

【発明の効果】本発明によれば、従来耐水性が劣るとさ
れていた水系エポキシ樹脂塗料においても溶剤系塗料と
同等の耐水性、防食性、付着性が得られ鉄構造物用の防
食用プライマーとして好適である。
According to the present invention, a water-based epoxy resin paint, which was conventionally considered to be inferior in water resistance, has the same water resistance, corrosion resistance and adhesion as solvent-based paints, and is used for corrosion prevention for iron structures. It is suitable as a primer.

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 水で希釈可能な自己乳化性エポキシ樹脂
あるいはエポキシ樹脂エマルション(a)、水溶性ポリ
アミン化合物(b)、アクリルシリコン樹脂エマルショ
ン(c)を含有する常温硬化性二液形水系エポキシ樹脂
塗料組成物であって、 アクリルシリコン樹脂エマルション(c)が、アルコキ
シシリル基を有するビニルモノマー5〜10%と、グリ
シジル基を有するビニルモノマー5〜10%と、残部そ
の他のビニルモノマーを共重合して得られることを特徴
とする常温硬化性二液形水系エポキシ樹脂塗料組成物。
1. A cold-curable two-part aqueous epoxy resin containing a water-dilutable self-emulsifying epoxy resin or an epoxy resin emulsion (a), a water-soluble polyamine compound (b), and an acrylic silicone resin emulsion (c). A coating composition, wherein an acrylic silicone resin emulsion (c) copolymerizes 5 to 10% of a vinyl monomer having an alkoxysilyl group, 5 to 10% of a vinyl monomer having a glycidyl group, and the rest of other vinyl monomers. Room temperature curable two-part aqueous epoxy resin coating composition characterized by being obtained by:
JP34857997A 1997-12-02 1997-12-02 Room temperature curable two-part aqueous epoxy resin coating composition Expired - Fee Related JP3274401B2 (en)

Priority Applications (1)

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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP34857997A JP3274401B2 (en) 1997-12-02 1997-12-02 Room temperature curable two-part aqueous epoxy resin coating composition

Publications (2)

Publication Number Publication Date
JPH11166153A JPH11166153A (en) 1999-06-22
JP3274401B2 true JP3274401B2 (en) 2002-04-15

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Country Status (1)

Country Link
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