JPH01247471A - Dip coating composition - Google Patents
Dip coating compositionInfo
- Publication number
- JPH01247471A JPH01247471A JP7577888A JP7577888A JPH01247471A JP H01247471 A JPH01247471 A JP H01247471A JP 7577888 A JP7577888 A JP 7577888A JP 7577888 A JP7577888 A JP 7577888A JP H01247471 A JPH01247471 A JP H01247471A
- Authority
- JP
- Japan
- Prior art keywords
- resin
- pigment
- coating
- water
- coating composition
- 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.)
- Pending
Links
- 239000008199 coating composition Substances 0.000 title claims abstract description 15
- 238000003618 dip coating Methods 0.000 title claims abstract description 14
- 229920005989 resin Polymers 0.000 claims abstract description 34
- 239000011347 resin Substances 0.000 claims abstract description 34
- 239000000049 pigment Substances 0.000 claims abstract description 27
- 238000010521 absorption reaction Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 abstract description 9
- 239000011248 coating agent Substances 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 8
- 238000005260 corrosion Methods 0.000 abstract description 8
- 239000000203 mixture Substances 0.000 abstract description 7
- 239000003960 organic solvent Substances 0.000 abstract description 4
- -1 acryl Chemical group 0.000 abstract description 3
- 229920000180 alkyd Polymers 0.000 abstract description 3
- 229920000877 Melamine resin Polymers 0.000 abstract description 2
- 239000004640 Melamine resin Substances 0.000 abstract description 2
- 125000000129 anionic group Chemical group 0.000 abstract description 2
- 125000002091 cationic group Chemical group 0.000 abstract description 2
- 239000006185 dispersion Substances 0.000 abstract description 2
- 239000000839 emulsion Substances 0.000 abstract description 2
- 239000003822 epoxy resin Substances 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- 229920000647 polyepoxide Polymers 0.000 abstract description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 abstract description 2
- 230000005764 inhibitory process Effects 0.000 abstract 1
- 239000003973 paint Substances 0.000 description 20
- 239000003921 oil Substances 0.000 description 14
- 235000019198 oils Nutrition 0.000 description 14
- 239000000523 sample Substances 0.000 description 6
- 238000011282 treatment Methods 0.000 description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- NVKTUNLPFJHLCG-UHFFFAOYSA-N strontium chromate Chemical compound [Sr+2].[O-][Cr]([O-])(=O)=O NVKTUNLPFJHLCG-UHFFFAOYSA-N 0.000 description 4
- 239000004593 Epoxy Substances 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 241000208202 Linaceae Species 0.000 description 3
- 235000004431 Linum usitatissimum Nutrition 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 235000021388 linseed oil Nutrition 0.000 description 3
- 239000000944 linseed oil Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- POAOYUHQDCAZBD-UHFFFAOYSA-N 2-butoxyethanol Chemical compound CCCCOCCO POAOYUHQDCAZBD-UHFFFAOYSA-N 0.000 description 2
- ZNQVEEAIQZEUHB-UHFFFAOYSA-N 2-ethoxyethanol Chemical compound CCOCCO ZNQVEEAIQZEUHB-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000006229 carbon black Substances 0.000 description 2
- 239000005338 frosted glass Substances 0.000 description 2
- 238000009863 impact test Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- NDKWCCLKSWNDBG-UHFFFAOYSA-N zinc;dioxido(dioxo)chromium Chemical compound [Zn+2].[O-][Cr]([O-])(=O)=O NDKWCCLKSWNDBG-UHFFFAOYSA-N 0.000 description 2
- SVONRAPFKPVNKG-UHFFFAOYSA-N 2-ethoxyethyl acetate Chemical compound CCOCCOC(C)=O SVONRAPFKPVNKG-UHFFFAOYSA-N 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- 241000287828 Gallus gallus Species 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 239000002518 antifoaming agent Substances 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 229910000151 chromium(III) phosphate Inorganic materials 0.000 description 1
- IKZBVTPSNGOVRJ-UHFFFAOYSA-K chromium(iii) phosphate Chemical compound [Cr+3].[O-]P([O-])([O-])=O IKZBVTPSNGOVRJ-UHFFFAOYSA-K 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229910052570 clay Inorganic materials 0.000 description 1
- 239000010960 cold rolled steel Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- DQYBDCGIPTYXML-UHFFFAOYSA-N ethoxyethane;hydrate Chemical compound O.CCOCC DQYBDCGIPTYXML-UHFFFAOYSA-N 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 239000001034 iron oxide pigment Substances 0.000 description 1
- 229910000398 iron phosphate Inorganic materials 0.000 description 1
- WBJZTOZJJYAKHQ-UHFFFAOYSA-K iron(3+) phosphate Chemical compound [Fe+3].[O-]P([O-])([O-])=O WBJZTOZJJYAKHQ-UHFFFAOYSA-K 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 239000011088 parchment paper Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
- ANRHNWWPFJCPAZ-UHFFFAOYSA-M thionine Chemical compound [Cl-].C1=CC(N)=CC2=[S+]C3=CC(N)=CC=C3N=C21 ANRHNWWPFJCPAZ-UHFFFAOYSA-M 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 230000010415 tropism Effects 0.000 description 1
- LRXTYHSAJDENHV-UHFFFAOYSA-H zinc phosphate Chemical compound [Zn+2].[Zn+2].[Zn+2].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LRXTYHSAJDENHV-UHFFFAOYSA-H 0.000 description 1
- 229910000165 zinc phosphate Inorganic materials 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
Abstract
Description
【発明の詳細な説明】
（産業」二のｆｌｌ用分野）
本発明は、浸漬塗装用塗料組成物に関するものであり、
特に被塗物のエツジ部（端部）においても防食性の帰れ
た塗膜を形成できる、浸漬塗装に°０用な学事、）組成
物に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Field of industry) The present invention relates to a coating composition for dip coating,
In particular, the present invention relates to a composition suitable for dip coating, which can form a highly corrosion-resistant coating even on the edges of objects to be coated.
（背は技術）
浸漬塗装用塗料組成物としては、多くのものが実用化さ
れて“いるが、被塗物が曲率半径の小さなエツジ端部を
有する場合、被塗物を浸漬塗料浴中に浸漬して引上げ、
余分の塗料を除去する際の塗料膜の流動によって、また
、加熱硬化時における塗料膜の粘度低下による流動によ
って被塗物のエツジ端部に充分な塗膜厚がｌｉ？！保で
きず、エツジ端部のカバーリングが劣り、そのため防食
性が悪いという問題点を有していた。(Technology behind it) Many coating compositions for dip coating have been put into practical use, but when the object to be coated has an edge with a small radius of curvature, it is necessary to place the object in a dip coating bath. immerse and pull out,
Due to the flow of the paint film when removing excess paint, and due to the flow due to the decrease in viscosity of the paint film during heat curing, a sufficient paint film thickness can be created at the edge of the object to be coated. ! The problem was that the covering of the edges was poor, and therefore the corrosion resistance was poor.
（発明の開示）
本発明は、エツジ端部においても充分な塗膜厚を確保す
ることができる浸漬塗装用塗料組成物に関するものであ
り、本発明によれば、樹脂と少なくとも１種の顔料を必
須成分としてなり、該樹脂１００ｇ当たりの顔料の総吸
油量が２０００〜２５０００であることを特徴とする浸
漬塗装用塗料組成物が提供される。(Disclosure of the Invention) The present invention relates to a coating composition for dip coating that can ensure a sufficient coating thickness even at the edge. Provided is a coating composition for dip coating, characterized in that the total oil absorption amount of the pigment is 2,000 to 25,000 per 100 g of the resin.
本発明においては樹脂１００ ｇ当たりの顔料の総吸油
遺を２０００〜２５０００の範囲の塗料組成物とするこ
とによって、塗料の粘性をチキントロピーとでき、エツ
ジ端部にも充分な膜厚を確保でき、防食性良好な浸漬塗
装塗膜が得られる。In the present invention, by creating a coating composition in which the total oil absorption of pigment per 100 g of resin is in the range of 2,000 to 25,000, the viscosity of the coating can be made chicken-tropic, and a sufficient film thickness can be ensured even at the edge edges. , a dip-coated film with good corrosion resistance can be obtained.
すなわちチキソトロピー性を有する本発明の塗料組成物
は塗料に力が加わり流動している時は粘度が低く、力が
除かれると粘度が高くなる性質を有しており、浸漬塗装
においては、浸漬塗料槽中の塗料は撹拌され流動して塗
料粘度は低く塗装し易い状態に保たれ、また−旦、被塗
物が塗装されて引上げられると、被塗物上の塗料膜にか
かる力が除かれ塗料膜の粘度が高くなるため、エツジ端
部に塗着した塗料の流動性が抑制され、エツジ端部に充
分な膜厚が得られ、また焼付時における塗膜の粘度低下
も抑制でき、最終的に得られる塗膜はエツジ端部におい
ても充分な膜厚を有するものとなり、エツジ端部の防食
性を良好なものとすることができる。In other words, the coating composition of the present invention having thixotropic properties has a property of having a low viscosity when a force is applied to the coating and is flowing, and a high viscosity when the force is removed. The paint in the tank is stirred and fluidized, keeping the viscosity of the paint low and easy to coat.Once the object is coated and pulled up, the force applied to the paint film on the object is removed. Since the viscosity of the paint film increases, the fluidity of the paint applied to the edge edge is suppressed, and a sufficient film thickness is obtained at the edge edge, and the decrease in viscosity of the paint film during baking is suppressed, resulting in a final The coating film thus obtained has a sufficient film thickness even at the edge ends, and the corrosion resistance of the edge ends can be improved.
本発明に用いられる樹脂としては、水溶性ないしは水分
散性樹脂および水系エマルションなどのアニオン性、カ
チオン性または非イオン性の水性樹脂、有機溶剤溶液形
および非水分散（ＮＡＤ）形の有機溶剤希釈型樹脂のい
ずれも使用できる。The resins used in the present invention include water-soluble or water-dispersible resins, anionic, cationic or non-ionic water-based resins such as water-based emulsions, organic solvent solution forms and non-aqueous dispersion (NAD) forms diluted with organic solvents. Any mold resin can be used.
樹脂種としては、エポキシ樹脂、エポキシエステル樹脂
、アルキド樹脂、アクリル樹脂、ウレタン樹脂およびメ
ラミン樹脂等を単独で、もしくは２種以上組合わせて使
用できる。As the resin type, epoxy resin, epoxy ester resin, alkyd resin, acrylic resin, urethane resin, melamine resin, etc. can be used alone or in combination of two or more.
また本発明における顔料としては、タンカル、マイカ、
バリダ、クレー、シリカ、タルクなどの体質顔料、カー
ボンブラック、グラファイト、二酸化チタン、シアニン
ブルー、酸化鉄系顔料、ストロンチウムクロメート、ジ
ンククロメートなどの有機系および無機系の着色顔料お
よび防錆顔料等の通常塗料分野で使用できる顔料類が使
用できる。またストロンチウムクロメートやジンククロ
メートなどの防錆顔料は、防食性などの観点から樹脂１
００重量部に対して０５〜３５重量部の範囲含有されて
いることが好ましい。In addition, pigments in the present invention include tankar, mica,
Extender pigments such as barida, clay, silica, talc, organic and inorganic coloring pigments and anti-rust pigments such as carbon black, graphite, titanium dioxide, cyanine blue, iron oxide pigments, strontium chromate, zinc chromate, etc. Pigments that can be used in the paint field can be used. In addition, anti-rust pigments such as strontium chromate and zinc chromate are used in resins from the viewpoint of corrosion resistance.
It is preferable that the content is in the range of 05 to 35 parts by weight per 00 parts by weight.
本発明においては樹脂１００ｇ当たり、上記の顔料類を
顔料の総吸油量が２０００〜２５０００、好ましくは５
０００〜ｌ ５０００の範囲内となるよう配合する。樹
脂１００ｇ当たりの顔料の総吸油量が２０００未満では
チキントロピー性の付与効果が不足し、エツジ端部に充
分な膜厚が得られず、一方、上記総吸油量が２５０００
を超えると得られる塗膜の物性が劣る傾向がみられる。In the present invention, the above-mentioned pigments are added per 100 g of resin so that the total oil absorption amount of the pigments is 2,000 to 25,000, preferably 5.
000 to 15000. If the total oil absorption amount of the pigment per 100 g of resin is less than 2000, the effect of imparting chicken tropism is insufficient, and a sufficient film thickness cannot be obtained at the edge end.
If it exceeds 100%, the physical properties of the resulting coating film tend to be poor.
本発明の浸漬塗装用塗料組成物は上記の樹脂と顔料を必
須成分とするものであるが、その他、消泡剤、レベリン
グ剤、増粘剤、タレ止め剤、顔料分散剤、色分かれ防止
剤などの塗料添加剤を含有していてもよい。The coating composition for dip coating of the present invention contains the above-mentioned resin and pigment as essential components, but also contains an antifoaming agent, a leveling agent, a thickener, an anti-sagging agent, a pigment dispersant, and a color separation prevention agent. It may contain paint additives such as.
本発明における樹脂が水性樹脂である場合、さらに水を
必須成分として含有し、その他、メタノール、エタノー
ル、プロパツール、ブタノール、エチレングリコールモ
ノエチルエーテル、エチレングリコールモノブチルエー
テル、エチレングリコールモノエチルエーテルアセテー
トなどのアルコール順、セロソルブ系溶剤類などの水と
親和性を有する溶剤類を塗装作業性や塗面外観の改善な
どのために含有してもよい。また樹脂が有機溶剤希釈型
樹脂の場合、通常、塗料用溶剤として用いられ樹脂を希
釈できる溶剤を含有せしめて使用する６
本発明の塗料組成物を浸漬塗装する場合、浸漬塗装浴の
浴温は通常１５〜３５°Ｃ１さらに好ましくは２０〜３
０°Ｃ１浴の粘度は４５〜８０秒、さらに好ましくは５
０〜７０秒（フォードカップＮｏ、 ４ ／ ２５°Ｃ
）の範囲内で行なわれる。When the resin in the present invention is an aqueous resin, it further contains water as an essential component and also contains methanol, ethanol, propatool, butanol, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol monoethyl ether acetate, etc. Solvents having affinity with water, such as alcohol and cellosolve solvents, may be included for the purpose of improving painting workability and appearance of the painted surface. In addition, when the resin is an organic solvent diluted resin, it is usually used by containing a solvent that is used as a paint solvent and can dilute the resin. 6 When coating the coating composition of the present invention by dip coating, the bath temperature of the dip coating bath is Usually 15-35°C1 More preferably 20-3
The viscosity of the 0°C1 bath is 45 to 80 seconds, more preferably 5
0-70 seconds (Ford Cup No. 4/25°C
) is carried out within the range of
被塗物としては、冷延鋼板、亜鉛メツキ鋼機、アルミニ
ウム等の金属素材や、これらの金属素材にリン酸鉄処理
、リン酸亜鉛処理、クロメート処理、リン酸クロム処理
もしくはアルマイト処理などの化成処理を施した表面処
理素材などが被塗物として使用できる。The objects to be coated include metal materials such as cold-rolled steel sheets, galvanized steel sheets, aluminum, etc., and chemical treatments such as iron phosphate treatment, zinc phosphate treatment, chromate treatment, chromium phosphate treatment, or alumite treatment on these metal materials. Surface-treated materials can be used as objects to be coated.
本発明における顔料の総吸油量はＪＩＳ Ｋ５１０１
−７８（顔料試験方法）を用いて次の方法によって測定
される。The total oil absorption amount of the pigment in the present invention is JIS K5101.
-78 (Pigment Test Method) as measured by the following method.
まず、各々の顔料の吸油量は、次のようにして求められ
る。First, the oil absorption amount of each pigment is determined as follows.
規定量の試料を硫酸紙にｌ０ｍｇまで正確にはかりとり
、これをすりガラス扱の上に移す。あらかじめ、試料に
ついて予想される吸油量から必要なくあまに油の量を計
算し、その約９０％をミクロビユレットから調べらの先
端にとり、ただちにこのへらですりガラス板の上の試料
と煮あまに油とを約５分間かけて十分に練り合せる。Accurately weigh a specified amount of sample to the nearest 10 mg on parchment paper, and transfer it onto a frosted glass plate. Calculate the amount of linseed oil in advance from the expected oil absorption of the sample, take about 90% of it from the microbiulet onto the tip of the probe, and immediately mix it with the sample on the frosted glass plate using this spatula. Mix well with oil for about 5 minutes.
つぎに煮あまに油を１〜２滴へらに滴下し、均一に練り
合わせる。煮あまに油を１〜２滴加えて練り合せる操作
をくり返し、試料の全体が初めて堅い均一なパテ状の一
つにまとまった固まりになったときを終点とし、それま
でに要した煮あまに油の量を０．０１ｍ１まで読みとる
。Next, add 1-2 drops of boiled linseed oil to the spatula and mix evenly. The process of adding 1-2 drops of oil to the boiled flax and kneading it is repeated, and the end point is when the entire sample becomes a hard, uniform, putty-like mass for the first time, and the boiled flax has been added to the boiled flax until then. Read the amount of oil to the nearest 0.01ml.
次いで、吸油量は次式により算出される。Next, the oil absorption amount is calculated using the following formula.
Ａ ＝ −Ｘ １００
ここに Ａ：吸油量
Ｓ：試料の質量（ｇ）
Ｌ：煮あまに油の使用量（ｇ）
また、総吸油量は樹脂１００ｇに対し配合した各）１の
顔料の配合量（ｇ）に前記式で求められるそれぞれの顔
料の吸油量の値をかけ合せた値の総和で算出される値で
ある。A = -X 100 where A: Oil absorption amount S: Mass of sample (g) L: Amount of boiled linseed oil used (g) Also, the total oil absorption amount is the amount of each pigment (1) blended per 100 g of resin. This value is calculated as the sum of the amount (g) multiplied by the oil absorption value of each pigment determined by the above formula.
本発明塗料組成物を用いた塗装工程の一例を示すと、被
塗物が前記のように調整された本発明塗料組成物の浸漬
塗装洛中に２〜３分間浸漬された後、引」−げられ、５
〜ＩＯ分間静置または空気吹付けなどによって被塗物上
の余分な塗料を除いた後、焼付けられ、乾燥膜厚（エツ
ジ部）５〜１５ミクロンのｑｉｉが形成される。焼付条
件は使用する樹脂の種類によって適宜選択すればよく、
通常７０〜１４０℃で１５〜３０分間焼付けられる。An example of a coating process using the coating composition of the present invention is that the object to be coated is immersed in the coating composition of the present invention prepared as described above for 2 to 3 minutes, and then removed. 5
After removing excess paint on the object to be coated by allowing it to stand for ~IO minutes or by blowing air, it is baked to form a dry film thickness (edge portion) qii of 5 to 15 microns. Baking conditions can be selected appropriately depending on the type of resin used.
It is usually baked at 70 to 140°C for 15 to 30 minutes.
本発明塗料組成物を浸漬塗装に使用することにより、被
塗物のエツジ端部に充分な膜厚を確保することができ、
防食性良好な浸漬塗装塗膜が得られる。By using the coating composition of the present invention for dip coating, a sufficient film thickness can be ensured at the edge of the object to be coated,
A dip-coated film with good corrosion resistance can be obtained.
（実施例） 本発明をさらに具体的に説明するため実施例を掲げる。(Example) Examples will be given to further specifically explain the present invention.
実施例１
下記表に示すように、固形分６０重啜％の水溶性エポキ
シエステル樹脂１６７ｇ （固形分で１００ｇ）、カー
ボンブラック５ｇ、ストロンチウムクロメート３ｇ、シ
リカ微粉末Ａ２３ｇ、水１６０ｇｇよびエチレングリコ
ール千ノエチルエーテル６６ｇを配合し、シェーカーに
て顔料分散を行ない塗料を得た。下記表に配合組成（固
形分）を示す。Example 1 As shown in the table below, 167 g of water-soluble epoxy ester resin with a solid content of 60% by weight (100 g in solid content), 5 g of carbon black, 3 g of strontium chromate, 23 g of fine silica powder A, 160 g of water, and 1,000 g of ethylene glycol were added. 66 g of ethyl ether was blended and the pigment was dispersed in a shaker to obtain a paint. The table below shows the composition (solid content).
実施例２〜４および比較例１
実施例１と同様に行ない、それぞれ下記表などに示す配
合の塗料を得た。Examples 2 to 4 and Comparative Example 1 The same procedure as in Example 1 was carried out to obtain paints having the formulations shown in the table below.
実施例２
実施例３
実施例２において水ン容性エポキシエステル樹脂を水分
散性アルキド樹脂に置き換える以外は同様に行なって塗
料を得た。Example 2 Example 3 Paints were obtained in the same manner as in Example 2 except that the water-soluble epoxy ester resin was replaced with a water-dispersible alkyd resin.
実施例４
実施例５
実施例６
実施例２においてストロンチウムクロメートを配合しな
い以外は同様に行ない塗料を得た。Example 4 Example 5 Example 6 Paints were obtained in the same manner as in Example 2 except that strontium chromate was not blended.
比較例１
実施例１〜４ｊ１５よび比較例１で得た塗料について、
水／エチレングリコールモノブチルエーテル＝２／１の
液で希釈し、それぞれ、６０秒（）オードカップＮｏ、
４ ／ ２５℃）の浸漬塗装ン谷とし、浴温２５℃で
厚さ０．８ｍ／ｍのリン酸亜紹処理鋼機を被塗物として
浸漬塗装を行なった。引上げ後、６分間放置した後、８
０℃で２０分間焼付けを行ない、浸漬塗装板を得た。Comparative Example 1 Regarding the paints obtained in Examples 1 to 4j15 and Comparative Example 1,
Diluted with a solution of water/ethylene glycol monobutyl ether = 2/1, each for 60 seconds () ord cup No.
Dip coating was carried out at a bath temperature of 25°C using a 0.8 m/m thick phosphoric acid treated steel as the object to be coated. After lifting and leaving it for 6 minutes, 8
Baking was performed at 0° C. for 20 minutes to obtain a dip-coated board.
試１里
上記のようにして得られた浸漬塗装板についてＪＩＳ
Ｚ ２３７１に基づいて２４０時間耐塩水哨水噴霧
を行ない、平面部および工・ンジ部の防食性を調べた。JIS for the dip-coated board obtained as above
Based on Z 2371, salt water spraying was carried out for 240 hours to examine the corrosion resistance of the flat parts and the groove parts.
また、ＪＩＳ Ｋ ５４００−１９７９ ６．１３
．３Ｂ法に準じて、２０℃の雰囲気下で落錘重さ５００
ｇ、撃心の尖端直径陣インチの条件で衝撃試験を行なっ
た。結果を第１表に示す。Also, JIS K 5400-1979 6.13
．． According to the 3B method, the falling weight is 500 in an atmosphere of 20℃.
An impact test was conducted under the conditions that the center of impact was 1 inch in diameter. The results are shown in Table 1.
第 １ 表 ０１）耐塩水噴霧試験・評価は、下記に従った。Table 1 01) Salt water spray resistance test and evaluation were conducted in accordance with the following.
○：異常なし ■：わずかに錆またはブリスターが 認められる。○: No abnormality ■: Slight rust or blister Is recognized.
×：全面に錆がみられる。×: Rust is observed on the entire surface.
（＊２）衝撃試験：塗面の表面から衝撃を加えた時の、
塗膜損傷を生じない最大高さ
を示すｆｃｍ）。但し、５０ｃｍを最高値とした。(*2) Impact test: When an impact is applied from the surface of the painted surface,
(fcm) indicating the maximum height without causing paint damage. However, the maximum value was 50 cm.
Claims (1)
、該樹脂１００ｇ当たりの顔料の総吸油量が２０００〜
２５０００であることを特徴とする浸漬塗装用塗料組成
物。 ２）樹脂が水性樹脂であり、さらに水を必須成分として
含有する請求項１記載の塗料組成物。[Scope of Claims] 1) A resin and at least one pigment are essential components, and the total oil absorption amount of the pigment per 100 g of the resin is 2000 to 2000.
25,000. A coating composition for dip coating. 2) The coating composition according to claim 1, wherein the resin is an aqueous resin and further contains water as an essential component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7577888A JPH01247471A (en) | 1988-03-29 | 1988-03-29 | Dip coating composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7577888A JPH01247471A (en) | 1988-03-29 | 1988-03-29 | Dip coating composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01247471A true JPH01247471A (en) | 1989-10-03 |
Family
ID=13586015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7577888A Pending JPH01247471A (en) | 1988-03-29 | 1988-03-29 | Dip coating composition |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01247471A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6566652B1 (en) | 1999-09-13 | 2003-05-20 | Hitachi, Ltd. | Mass spectrometry apparatus having ion source not at negative pressure when finishing measurement |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62228500A (en) * | 1985-12-04 | 1987-10-07 | Kansai Paint Co Ltd | Electrodeposition painting method |
-
1988
- 1988-03-29 JP JP7577888A patent/JPH01247471A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62228500A (en) * | 1985-12-04 | 1987-10-07 | Kansai Paint Co Ltd | Electrodeposition painting method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6566652B1 (en) | 1999-09-13 | 2003-05-20 | Hitachi, Ltd. | Mass spectrometry apparatus having ion source not at negative pressure when finishing measurement |
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