JP5368328B2 - Water-based paint - Google Patents
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- JP5368328B2 JP5368328B2 JP2010009232A JP2010009232A JP5368328B2 JP 5368328 B2 JP5368328 B2 JP 5368328B2 JP 2010009232 A JP2010009232 A JP 2010009232A JP 2010009232 A JP2010009232 A JP 2010009232A JP 5368328 B2 JP5368328 B2 JP 5368328B2
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Description
本発明は、水系塗料および該塗料から形成される塗膜を有する物品に関するものであり、さらに詳細にはポリエーテルスルホン系樹脂を含む水系塗料用組成物にＨＬＢ値が８未満のアセチレンジオール系界面活性剤を添加してなる水系塗料、ならびに該塗料から形成される塗膜を有する物品に関するものである。 The present invention relates to an aqueous coating material and an article having a coating film formed from the coating material, and more specifically, to an aqueous coating composition containing a polyethersulfone resin and an acetylenic diol interface having an HLB value of less than 8. The present invention relates to an aqueous paint obtained by adding an activator and an article having a coating film formed from the paint.
フッ素樹脂は、耐熱性、非粘着性、耐汚染性に優れているため、フライパン、電子レンジ内板、ＩＨジャー炊飯器の内釜、ガステーブル天板等の調理用器具に広く用いられている。 Fluororesin is excellent in heat resistance, non-adhesiveness, and contamination resistance, so it is widely used in cooking utensils such as frying pans, microwave oven inner plates, IH jar rice cookers, and gas table top plates. .
調理用器具を構成するアルミニウムなどの金属基材にフッ素樹脂をコーティングする場合、金属基材上にプライマーを塗装し、さらにその上にフッ素樹脂からなるトップコーティング層を塗装した後、その塗膜を焼き付けて、２層からなるコーティング膜を形成する方法が知られている。 When coating a fluororesin on a metal base material such as aluminum that constitutes cooking utensils, paint a primer on the metal base material, and then apply a top coating layer made of fluororesin on it, and then apply the coating film. A method of baking to form a two-layer coating film is known.
そして、外部衝撃に対する保護層や断熱層を形成するために、フッ素樹脂コーティングが施された面の裏側に、さらにフッ素樹脂コーティングを施すことも行われている。 And in order to form the protective layer and heat insulation layer with respect to an external impact, the fluororesin coating is also performed on the back side of the surface where the fluororesin coating was performed.
また、塗膜に断熱性を付与するために、ガラスビーズなどの無機材料からなる多孔質微粒子を塗料に添加することも知られている。 It is also known to add porous fine particles made of an inorganic material such as glass beads to a paint in order to impart heat insulation to the coating film.
表面にフッ素樹脂コーティングが施された金属基材の裏面にもフッ素樹脂コーティングを施す場合、裏面のフッ素樹脂コーティングの焼き付け時に、先に形成された表面のフッ素樹脂コーティングが溶融するという問題があった。 When the fluororesin coating is also applied to the back surface of the metal base material with the fluororesin coating on the surface, there is a problem that the fluororesin coating on the surface formed earlier is melted when the fluororesin coating on the back surface is baked. .
また、多孔質微粒子を含む塗料で塗膜を形成すると、多孔質微粒子に起因して、表面に凹凸のある塗膜、あるいは内部に空孔のある塗膜が形成されることがある。 In addition, when a coating film is formed with a coating material containing porous fine particles, a coating film with irregularities on the surface or a coating film with pores inside may be formed due to the porous fine particles.
このような塗膜表面の凹凸や塗膜内部の空孔をなくするために、この塗膜上にポリエーテルスルホン系樹脂を含む水系塗料を塗装すると、その塗料の乾燥過程で塗膜中に気泡が生じるという問題があった。 In order to eliminate such irregularities on the surface of the coating film and pores inside the coating film, when a water-based paint containing a polyethersulfone resin is applied on the coating film, bubbles are formed in the coating film during the drying process of the paint. There was a problem that occurred.
本発明者らは、上記のような問題を解決すべく鋭意研究した結果、ポリエーテルスルホン系樹脂を含む水系塗料用組成物にＨＬＢ値が８未満のアセチレンジオール系界面活性剤を添加することにより、これらの問題を解決できることを見出し、本発明を完成するに到った。 As a result of intensive studies to solve the above problems, the present inventors have added an acetylenic diol surfactant having an HLB value of less than 8 to an aqueous coating composition containing a polyether sulfone resin. The present inventors have found that these problems can be solved and have completed the present invention.
すなわち、フッ素樹脂コーティングが施された面の裏側に、本発明に係る水系塗料からなる塗膜を施すと、本発明の水系塗料は比較的低温で焼付けができるため、先に表面側に施されたフッ素樹脂コーティングの溶融を回避できるという効果がある。 That is, when a coating film made of the water-based paint according to the present invention is applied to the back side of the surface coated with the fluororesin coating, the water-based paint of the present invention can be baked at a relatively low temperature, so that it is applied to the surface side first. This has the effect of avoiding melting of the fluororesin coating.
また、本発明の水系塗料は擬塑性（チキソトロピー性）を有しているため、塗料乾燥過程での気泡発生を防止でき、物品の表面が美しく滑らかに仕上がるという効果が得られる。 Further, since the water-based paint of the present invention has pseudoplasticity (thixotropic property), it is possible to prevent the generation of bubbles during the paint drying process, and the effect that the surface of the article is beautifully and smoothly finished can be obtained.
かくして、本発明によれば、ポリエーテルスルホン系樹脂（ＰＥＳ）を含む水系塗料用組成物にＨＬＢ値が８未満のアセチレンジオール系界面活性剤を添加することにより、比較的低温で焼付けができ、擬塑性を有する水系塗料が提供される。
また、本発明によれば、該水系塗料から形成される塗膜を有する物品が提供される。
Thus, according to the present invention, by adding an acetylenic diol surfactant having an HLB value of less than 8 to an aqueous coating composition containing a polyethersulfone resin (PES), baking can be performed at a relatively low temperature, A water-based paint having pseudoplasticity is provided.
Moreover, according to this invention, the article | item which has a coating film formed from this water-system coating material is provided.
以下、本発明をより詳細に説明する。
本発明における「ポリエーテルスルホン系樹脂」とは、パラフェニレン基がスルホン基とエーテル基で交互に結合した構造を有する熱可塑性のポリマーを意味し、中でもガラス転移温度が２２０〜２３０℃のポリマーが好ましい。
Hereinafter, the present invention will be described in more detail.
The “polyethersulfone-based resin” in the present invention means a thermoplastic polymer having a structure in which paraphenylene groups are alternately bonded by sulfone groups and ether groups, and among them, a polymer having a glass transition temperature of 220 to 230 ° C. preferable.
具体的には、粉体状のポリエーテルスルホン系樹脂が好ましく、スミカエクセル(Sumika excel：商標)４１００ＭＰ、５２００Ｐ、７６００Ｐ、５００３Ｐ（住友化学株式会社製）およびウルトラゾーン（Ultrason：商標）E2020P、E6020P（ＢＡＳＦ社製）がより好ましく、これらの中でもスミカエクセル(商標)４１００ＭＰが特に好ましい。 Specifically, a powdery polyethersulfone resin is preferable, and Sumika excel (trademark) 4100MP, 5200P, 7600P, 5003P (manufactured by Sumitomo Chemical Co., Ltd.) and Ultrason (trademark) E2020P, E6020P. (Manufactured by BASF) is more preferred, and among these, SUMIKAEXCEL ™ 4100MP is particularly preferred.
上記で好ましい例として挙げられたポリエーテルスルホン系樹脂は、例えば、耐熱性、耐クリープ性、寸法安定性、難燃性、耐熱水性などの特性を有し、弾性率は−１００℃〜２００℃の温度範囲で安定である。 The polyethersulfone resin mentioned as a preferred example above has, for example, properties such as heat resistance, creep resistance, dimensional stability, flame retardancy, hot water resistance, and an elastic modulus of −100 ° C. to 200 ° C. It is stable in the temperature range.
本発明における「アセチレンジオール系界面活性剤」とは、ヒドロキシ基および炭素−炭素３重結合からなる親水性基を、分岐した炭化水素でできた疎水性基が挟む構造の左右対称の非イオン性分子を有する界面活性剤であり、好ましくはサーフィノール(商標)４２０、１０４、ＳＥ−Ｆ、ダイノール（Dynol：商標）６０４（エアープロダクツジャパン株式会社製）が挙げられ、これらのアセチレンジオール系界面活性剤は、２種以上を併用してもよい。 The “acetylenic diol-based surfactant” in the present invention is a symmetric non-ionic structure having a structure in which a hydrophilic group composed of a hydroxy group and a carbon-carbon triple bond is sandwiched by a hydrophobic group made of a branched hydrocarbon. A surfactant having a molecule, preferably Surfynol (trademark) 420, 104, SE-F, Dynal (trademark) 604 (manufactured by Air Products Japan Co., Ltd.), and these acetylenic diol-based surfactants Two or more agents may be used in combination.
アセチレンジオール系界面活性剤のＨＬＢ値は、８未満であるのが好ましく、２〜７がより好ましく、３〜６が特に好ましい。アセチレンジオール系界面活性剤のＨＬＢ値が８以上であると擬塑性が発現し難いという不都合がある。 The HLB value of the acetylenic diol surfactant is preferably less than 8, more preferably 2 to 7, and particularly preferably 3 to 6. If the HLB value of the acetylenic diol surfactant is 8 or more, there is an inconvenience that pseudoplasticity is hardly exhibited.
本発明において、上記のようなポリエーテルスルホン系樹脂およびアセチレンジオール系界面活性剤を含む「水系塗料」とは、有機溶剤を実質的に含まない塗料であり、揮発性有機化合物の含量が1％以下であり、芳香族炭化水素系溶剤の含量が0.1％未満である、環境に優しい水ベースの塗料を意味する。 In the present invention, the “water-based paint” containing the polyether sulfone resin and the acetylenic diol surfactant as described above is a paint substantially free of an organic solvent, and has a content of volatile organic compounds of 1%. Means an environmentally friendly water-based paint with an aromatic hydrocarbon solvent content of less than 0.1%.
本発明における水系塗料用組成物は、水１００重量部に対して、ポリエーテルスルホン系樹脂を９０〜１５０重量部、好ましくは１００〜１２０重量部含み、本発明における水系塗料はかかる水系塗料用組成物１００重量部に対してアセチレンジオール系界面活性剤を０．５〜８重量部、好ましくは０．５〜３重量部含む。 The water-based paint composition in the present invention contains 90 to 150 parts by weight, preferably 100 to 120 parts by weight, of the polyethersulfone resin with respect to 100 parts by weight of water, and the water-based paint in the present invention is such a composition for water-based paints. 0.5 to 8 parts by weight, preferably 0.5 to 3 parts by weight of an acetylenic diol surfactant is contained with respect to 100 parts by weight of the product.
本発明の水系塗料には、着色のための各種顔料あるいは染料を任意に配合することができる。そのような顔料や染料の種類および配合割合は特に限定されず、公知の処方および配合方法をそのまま採用することができる。 Various pigments or dyes for coloring can be arbitrarily blended in the water-based paint of the present invention. The kind and blending ratio of such pigments and dyes are not particularly limited, and known formulations and blending methods can be employed as they are.
本発明の水系塗料は、例えば、まず水とポリエーテルスルホン系樹脂および顔料および／または染料とを常温で撹拌下に混合して水系塗料用組成物を製造し、このようにして得られる水系塗料用組成物にアセチレンジオール系界面活性剤を常温で撹拌下に添加することにより製造することができる。なお、アセチレンジオール系界面活性剤は、水系塗料の使用直前に水系塗料用組成物に添加してもよい。 The water-based paint of the present invention is, for example, a water-based paint composition obtained by first mixing water, a polyethersulfone-based resin, and a pigment and / or dye with stirring at room temperature to produce a water-based paint composition. It can manufacture by adding an acetylene diol-type surfactant to the composition for stirring at normal temperature under stirring. In addition, you may add an acetylene diol type surfactant to the composition for water based coatings just before use of a water based coating material.
本発明の水系塗料は、使用に際して好適なチキソトロピー性を付与するために撹拌するのが好ましく、その攪拌時の圧力は、通常0.5〜2ＭＰａ、好ましくは0.7〜1.5ＭＰａ、特に好ましくは0.8〜1.2ＭＰａである。 The water-based paint of the present invention is preferably stirred for imparting suitable thixotropy in use, and the pressure at the time of stirring is usually 0.5 to 2 MPa, preferably 0.7 to 1.5 MPa, particularly preferably 0.8 to 1.2 MPa. It is.
本発明の水系塗料は、例えばアルミニウム、ステンレス、チタン、鉄、またはこれらを組み合わせた複合材を基材として製造された、例えば炊飯釜などを含む釜、圧力鍋などを含む鍋およびフライパンなどの調理用器具、特にＩＨ用の調理器具に対して好適に使用される。 The water-based paint of the present invention is manufactured using, for example, aluminum, stainless steel, titanium, iron, or a combination of these as a base material. For example, a pot including a rice cooker, a pot including a pressure cooker, and a cooking pan such as a pan It is preferably used for cooking utensils, particularly cooking utensils for IH.
本発明の水系塗料を塗布して形成される塗膜の厚さは任意であるが、表面に凹凸のある塗膜あるいは内部に空孔のある塗膜の上に本発明の水系塗料からなる塗膜を形成する場合には、この塗膜の厚さを約８０μm以上とするのが好ましい。 The thickness of the coating film formed by applying the water-based paint of the present invention is arbitrary, but the coating made of the water-based paint of the present invention is formed on a coating film with unevenness on the surface or a coating film having pores inside. In the case of forming a film, the thickness of this coating film is preferably about 80 μm or more.
なお、本発明の水系塗料は塗装すべき物品の表面に直接塗装してもよいが、本発明の水系塗料を構成する水系塗料用組成物により形成される塗膜層（Ａ）の上面に、本発明の水系塗料を塗装して塗膜層（Ｂ）を形成させてなる複合塗膜層としてもよい。
また、上記の塗膜層（Ａ）を２重、３重に形成させた上に塗膜層（Ｂ）を形成させてもよく、あるいは上記の複合塗膜層を２重、３重に形成させてもよい。
The water-based paint of the present invention may be directly applied to the surface of an article to be coated, but on the upper surface of the coating layer (A) formed by the water-based paint composition constituting the water-based paint of the present invention, It is good also as a composite coating layer formed by coating the water-based paint of the present invention to form the coating layer (B).
Further, the coating layer (B) may be formed after the coating layer (A) is formed in double or triple, or the composite coating layer is formed in double or triple. You may let them.
以下、実施例および比較例により本発明をさらに詳しく説明するが、本発明はこれらの実施例に限定されるものではない。 EXAMPLES Hereinafter, although an Example and a comparative example demonstrate this invention further in detail, this invention is not limited to these Examples.
実施例１
水１００重量部に対してポリエーテルスルホン系樹脂・スミカエクセル(商標)４１００ＭＰ（ガラス転移温度：２３０℃）を１０３重量部、ならびにカーボンブラック入り黒色顔料を４重量部および黒酸化鉄で被覆された雲母入り黒色顔料を５重量部含む塗料ＳＬ−８３１ＴＣ（商標、三井・デュポン フロロケミカル株式会社製）を用いて、水系塗料用組成物を調製した。この水系塗料用組成物１００重量部に対してアセチレンジオール系界面活性剤として、サーフィノール(Surfynol：商標)４２０（ＨＬＢ値＝４）を１重量部加え、攪拌機（TAMATO SCIENTIFIC CO. LTD. 製）で攪拌（８０ｒｐｍ、５分間）して、水系塗料を製造した。
Example 1
100 parts by weight of water was coated with 103 parts by weight of a polyethersulfone-based resin, SUMIKAEXCEL ™ 4100MP (glass transition temperature: 230 ° C.), 4 parts by weight of black pigment containing carbon black, and black iron oxide. A water-based paint composition was prepared using paint SL-831TC (trademark, manufactured by Mitsui DuPont Fluorochemical Co., Ltd.) containing 5 parts by weight of a mica-containing black pigment. 1 part by weight of Surfynol (trademark) 420 (HLB value = 4) is added as an acetylenic diol surfactant to 100 parts by weight of this water-based coating composition, and a stirrer (manufactured by TAMATO SCIENTIFIC CO. LTD.). The mixture was stirred (80 rpm, 5 minutes) to prepare a water-based paint.
実施例２
アセチレンジオール系界面活性剤として、サーフィノール(商標)４２０の代わりにサーフィノール（商標）１０４（HLB値＝４）を用い、実施例１と同様にして、水系塗料を製造した。
Example 2
A water-based paint was produced in the same manner as in Example 1 except that Surfynol ™ 104 (HLB value = 4) was used instead of Surfynol ™ 420 as an acetylenic diol surfactant.
実施例３
アセチレンジオール系界面活性剤として、サーフィノール(商標)４２０の代わりにダイノール（商標）６０４（HLB値＝４）を用い、実施例１と同様にして、水系塗料を製造した。
Example 3
A water-based paint was produced in the same manner as in Example 1 except that Dynol (trademark) 604 (HLB value = 4) was used instead of Surfynol (trademark) 420 as an acetylenic diol surfactant.
実施例４
アセチレンジオール系界面活性剤として、サーフィノール(商標)４２０の代わりにサーフィノール（商標）ＳＥ−Ｆ（HLB値＝６）を用い、実施例１と同様にして、水系塗料を製造した。
Example 4
A water-based paint was produced in the same manner as in Example 1 except that Surfynol (trademark) SE-F (HLB value = 6) was used instead of Surfynol (trademark) 420 as an acetylenic diol surfactant.
実施例５
水１００重量部に対してポリエーテルスルホン系樹脂・スミカエクセル（商標）４１００MP（ガラス転移温度：２３０℃）を１００重量部、ならびにカーボンブラック入り黒色顔料を４重量部および黒酸化鉄で被膜された雲母入り黒色顔料を５重量部含む塗料SL-831TC（商標、三井・デュポン フロロケミカル株式会社製）を用いて、水系塗料用組成物を調製した。
この水系塗料陽組成物１００重量部に対してアセチレンジオール系界面活性剤として、サーフィノール（商標）420（HLB値＝４）を０．５重量部加え、攪拌機（TAMATO SCIENTIFIC CO. LTD. 製）で攪拌（８０ｒｐｍ、５分間）して、水系塗料を製造した。
Example 5
100 parts by weight of water was coated with 100 parts by weight of polyethersulfone resin / SumikaExcel ™ 4100MP (glass transition temperature: 230 ° C.), 4 parts by weight of black pigment containing carbon black, and black iron oxide. A water-based paint composition was prepared using paint SL-831TC (trademark, manufactured by Mitsui DuPont Fluorochemical Co., Ltd.) containing 5 parts by weight of a black pigment containing mica.
0.5 parts by weight of Surfynol (trademark) 420 (HLB value = 4) is added as an acetylenic diol surfactant to 100 parts by weight of this water-based paint positive composition, and a stirrer (manufactured by TAMATO SCIENTIFIC CO. LTD.). The mixture was stirred (80 rpm, 5 minutes) to prepare a water-based paint.
実施例６
アセチレンジオール系界面活性剤として、サーフィノール(商標)４２０（０．５重量部）の代わりにサーフィノール（商標）４２０（HLB値＝４）を２重量部加え、実施例５と同様にして、水系塗料を製造した。
Example 6
As an acetylenic diol surfactant, 2 parts by weight of Surfynol (trademark) 420 (HLB value = 4) was added instead of Surfynol (trademark) 420 (0.5 part by weight). A water-based paint was produced.
実施例７
アセチレンジオール系界面活性剤として、サーフィノール(商標)４２０（０．５重量部）の代わりにサーフィノール（商標）４２０（HLB値＝４）およびサーフィノール（商標）１０４（HLB値＝４）を各々０．５重量部混合して（合計１重量部）加え、実施例５と同様にして、水系塗料を製造した。
Example 7
Surfynol (trademark) 420 (HLB value = 4) and Surfynol (trademark) 104 (HLB value = 4) were used as acetylenic diol surfactants instead of Surfynol (trademark) 420 (0.5 parts by weight). 0.5 parts by weight of each was mixed (1 part by weight in total) and added in the same manner as in Example 5 to produce a water-based paint.
実施例８
水１００重量部に対してポリエーテルスルホン系樹脂・スミカエクセル（商標）４１００MP（ガラス転移温度：２３０℃を１２０重量部、ならびにカーボンブラック入り黒色顔料を４重量部および黒酸化鉄で被膜された雲母入り黒色顔料を５重量部含む塗料SL-831TC（商標、三井・デュポン フロロケミカル株式会社製）を用いて、水系塗料用組成物を調製した。
この水系塗料用組成物１００重量部に対してアセチレンジオール系界面活性剤として、サーフィノール（商標）４２０（HLB値＝４）を０．５重量部加え、攪拌機（TAMATO SCIENTIFIC Co. LTD. 製）で攪拌（８０ｒｐｍ、５分間）して、水系塗料を製造した。
Example 8
Mica coated with 100 parts by weight of polyethersulfone-based resin, SUMIKAEXCEL ™ 4100MP (glass transition temperature: 120 parts by weight of 230 ° C., and 4 parts by weight of black pigment containing carbon black and black iron oxide) A water-based paint composition was prepared using a paint SL-831TC (trademark, manufactured by Mitsui DuPont Fluorochemical Co., Ltd.) containing 5 parts by weight of a black pigment.
0.5 parts by weight of Surfynol (trademark) 420 (HLB value = 4) is added as an acetylenic diol surfactant to 100 parts by weight of this water-based coating composition, and a stirrer (manufactured by TAMATO SCIENTIFIC Co. LTD.). The mixture was stirred (80 rpm, 5 minutes) to prepare a water-based paint.
比較例１
アセチレンジオール系界面活性剤として、サーフィノール(商標)４２０の代わりにサーフィノール(商標)４４０（ＨＬＢ値＝８）を用い、実施例１と同様にして、水系塗料を製造した。
Comparative Example 1
A water-based paint was produced in the same manner as in Example 1 except that Surfynol ™ 440 (HLB value = 8) was used as the acetylenic diol surfactant instead of
比較例２
アセチレンジオール系界面活性剤として、サーフィノール(商標)４２０の代わりにサーフィノール(商標)ＭＤ２０（ＨＬＢ値＝１６）を用い、実施例１と同様にして、水系塗料を製造した。
Comparative Example 2
A water-based paint was produced in the same manner as in Example 1 except that Surfynol (trademark) MD20 (HLB value = 16) was used instead of Surfynol (trademark) 420 as an acetylenic diol surfactant.
比較例３
アセチレンジオール系界面活性剤として、サーフィノール(商標)４２０の代わりにサーフィノール(商標)４８５（ＨＬＢ値＝１７）を用い、実施例１と同様にして、水系塗料を製造した。
Comparative Example 3
A water-based paint was produced in the same manner as in Example 1 except that Surfynol ™ 485 (HLB value = 17) was used as the acetylenic diol surfactant instead of
比較例４
アセチレンジオール系界面活性剤として、サーフィノール(商標)４２０の代わりにダイノール（商標）６０７（HLB値＝８）を用い、実施例１と同様にして、水系塗料を製造した。
Comparative Example 4
A water-based paint was produced in the same manner as in Example 1 except that Dynol (trademark) 607 (HLB value = 8) was used instead of Surfynol (trademark) 420 as an acetylenic diol surfactant.
比較例５
界面活性剤として、サーフィノール(商標)４２０の代わりに、アルカンジオール系界面活性剤、エンバイロジェム(EnviroGem：商標)ＡＤ０１（（ＨＬＢ値＝４）、エアープロダクツジャパン株式会社製）を用い、実施例１と同様にして、水系塗料を製造した。
Comparative Example 5
As surfactant, instead of Surfynol (trademark) 420, alkanediol surfactant, EnviroGem (trademark) AD01 ((HLB value = 4), manufactured by Air Products Japan Co., Ltd.) was used. In the same manner as in Example 1, a water-based paint was produced.
比較例６
界面活性剤として、サーフィノール(商標)４２０の代わりに、サーフィノール(商標)２５０２（ＨＬＢ値＝８）を用い、実施例１と同様にして、水系塗料を製造した。
Comparative Example 6
A water-based paint was produced in the same manner as in Example 1 except that Surfynol ™ 2502 (HLB value = 8) was used instead of
比較例７
界面活性剤として、サーフィノール(商標)４２０の代わりに、メトローズ６％水溶液（ＨＬＢ値＝１０）を用い、実施例１と同様にして、水系塗料を製造した。
Comparative Example 7
A water-based paint was produced in the same manner as in Example 1 except that, instead of Surfynol (trademark) 420, a
試験例１
（擬塑性）
上記の実施例１〜４ならびに比較例１〜７で得られた各水系塗料について、Ｂ型粘度計（株式会社 東京計器製）を用い、Ｎｏ．３ローターを使用し、回転数が６ｒｐｍ、１２ｒｐｍ、３０ｒｐｍおよび６０ｒｐｍのときの粘度を測定した。
結果を図１に示す。
Test example 1
(Pseudoplastic)
For each water-based paint obtained in Examples 1 to 4 and Comparative Examples 1 to 7, a B-type viscometer (manufactured by Tokyo Keiki Co., Ltd.) was used. Using three rotors, the viscosity was measured when the number of rotations was 6 rpm, 12 rpm, 30 rpm, and 60 rpm.
The results are shown in FIG.
試験例２
（発泡抑制効果）
最外層がアルミニウムの釜の表面をイソプロピルアルコールで脱脂し、サンドブラストで表面を十分に粗面化し、エアーブローにより表面のダストを除去した。
この表面に、ポリエーテルスルホン系樹脂、スミカエクセル（商標）４１００ＭＰに中空セラミックＳＬ−１２５（平均粒径：８０μm、太平洋セメント株式会社製）を配合した塗料、ＳＬ−８３０ＭＣ（商標、三井・デュポン フロロケミカル株式会社製）を用い、焼成後の膜厚が４００μmとなるように塗装した。
次いで、その表面に、実施例１〜８ならびに比較例１〜７で得られた各水系塗料を焼付け後の膜厚が８０μmとなるように塗装し、発泡の有無を目視観察した。
結果を表１に示す。
Test example 2
(Foaming suppression effect)
The surface of the aluminum outer pot was degreased with isopropyl alcohol, the surface was sufficiently roughened with sand blasting, and the dust on the surface was removed by air blowing.
On this surface, a polyether sulfone resin, SUMIKAEXCEL ™ 4100MP, and hollow ceramic SL-125 (average particle size: 80 μm, manufactured by Taiheiyo Cement Co., Ltd.), SL-830MC (trademark, Mitsui DuPont Fluoro) Chemical Co., Ltd.) was used so that the film thickness after firing was 400 μm.
Next, each water-based paint obtained in Examples 1 to 8 and Comparative Examples 1 to 7 was applied to the surface so that the film thickness after baking was 80 μm, and the presence or absence of foaming was visually observed.
The results are shown in Table 1.
実施例９
厚さ０．５ｍｍのフェライト系ステンレスに、厚さ１．０ｍｍのアルミニウムを接合したクラッド材を基材とし、フェライト系ステンレス側を外面にしてプレス成形して作製した釜状容器を塗装対象物品として用いた。この釜状容器の内面のアルミニウム表面にサンドブラストをかけ、表面を十分に粗面化し、エアブローにより表面のダストを除去した。次いで、フッ素樹脂、接着成分および顔料を含有する液状のプライマ塗料を、成膜後の膜厚が１０μｍとなるように塗装し、１２０℃で２０分間乾燥した。
Example 9
A pot-shaped container made by press-molding a clad material in which 1.0 mm thick aluminum is joined to 0.5 mm thick ferritic stainless steel and using the ferritic stainless steel side as the outer surface is used as an object to be coated. Using. Sand blasting was applied to the aluminum surface of the inner surface of the pot-shaped container to sufficiently roughen the surface, and dust on the surface was removed by air blowing. Next, a liquid primer paint containing a fluororesin, an adhesive component and a pigment was applied so that the film thickness after film formation was 10 μm, and dried at 120 ° C. for 20 minutes.
プライマの乾燥が終わり、基材の温度が十分に下がったところで、内面側にトップコート処理として、顔料や光輝材などの添加物を含有するフッ素樹脂の粉体塗料を焼成後の膜厚が５０μｍとなるように塗装し、次いで３９０℃で２０分間焼成処理して、フッ素樹脂コートに成膜した。 When the primer has been dried and the temperature of the substrate has been sufficiently lowered, the film thickness after baking of the fluororesin powder coating containing additives such as pigments and glittering materials as the top coat treatment on the inner surface side is 50 μm. Then, it was baked at 390 ° C. for 20 minutes to form a film on the fluororesin coat.
上記のフッ素樹脂コートを施した釜状容器の外面側のフェライト系ステンレス表面にサンドブラストをかけ、表面を十分に粗面化し、エアブローにより表面のダストを除去した。この外面側に、ポリエーテルスルホン系樹脂・スミカエクセル（商標）４１００MPに中空セラミックＳＬ−１２５を配合した塗料、ＳＬ−８３０ＭＣを、焼成後の膜厚が４００μｍとなるように塗装し、１５０℃で１５分間乾燥し、次いで２９０℃で２０分間焼成処理して成膜した。
この表面に、実施例１で得られた水系塗料を、焼成後の膜厚が８０μｍとなるように塗装し、１５０℃で１５分間乾燥し、次いで２９０℃で２０分間焼成処理して、塗装された釜を製造した。
Sand blasting was applied to the surface of the ferritic stainless steel on the outer surface side of the pot-shaped container coated with the above-mentioned fluororesin coating, the surface was sufficiently roughened, and dust on the surface was removed by air blowing. On this outer surface side, a paint obtained by blending a polyethersulfone-based resin / SUMICA EXCEL ™ 4100MP with hollow ceramic SL-125, SL-830MC, was applied so that the film thickness after firing would be 400 μm, at 150 ° C. The film was dried for 15 minutes and then baked at 290 ° C. for 20 minutes to form a film.
The surface was coated with the water-based paint obtained in Example 1 so that the film thickness after firing was 80 μm, dried at 150 ° C. for 15 minutes, and then fired at 290 ° C. for 20 minutes. A kettle was manufactured.
実施例１０
基材として厚さ２ｍｍのフェライト系ステンレスを用いた以外は、実施例９と同様にして、塗装されたフライパンを製造した。
Example 10
A coated frying pan was manufactured in the same manner as in Example 9 except that 2 mm thick ferritic stainless steel was used as the substrate.
実施例１１
基材として厚さ２．５ｍｍのアルミニウムを用いた以外は、実施例９と同様にして、塗装された鍋を製造した。
Example 11
A coated pan was produced in the same manner as in Example 9 except that aluminum having a thickness of 2.5 mm was used as the base material.
本発明の水系塗料は、調理用器具に塗膜を形成するための塗料として、特にＩＨ用の調理器具に塗膜を形成するための塗料として、極めて好適である。 The water-based paint of the present invention is extremely suitable as a paint for forming a coating film on a cooking utensil, particularly as a paint for forming a coating film on a cooking utensil for IH.
Claims (9)
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| JP2010009232A JP5368328B2 (en) | 2009-01-27 | 2010-01-19 | Water-based paint |
| KR1020100006992A KR101107101B1 (en) | 2009-01-27 | 2010-01-26 | Water-based coating material |
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| CA2045708A1 (en) * | 1990-06-27 | 1991-12-28 | Allan S. Wilen | Microwaveable packaging compositions |
| JP3791106B2 (en) * | 1997-03-27 | 2006-06-28 | 鳴海製陶株式会社 | Electromagnetic cooking plate |
| JP4221773B2 (en) * | 1998-06-05 | 2009-02-12 | ダイキン工業株式会社 | Aqueous primer composition for fluororesin coating |
| JP2000262397A (en) * | 1999-03-17 | 2000-09-26 | Toshiba Home Technology Corp | Electromagnetic induction heating type rice cooker |
| JP2001215690A (en) * | 2000-01-04 | 2001-08-10 | Air Prod And Chem Inc | Acetylenic diol ethylene oxide/propylene oxide adducts and their use in photoresis developer |
| WO2003029370A1 (en) * | 2001-08-31 | 2003-04-10 | Daikin Industries, Ltd. | Coating composition and coated article |
| US20040071987A1 (en) * | 2002-07-02 | 2004-04-15 | Bate Thomas J. | Non-stick coating and method of forming same |
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