JP2005320496A - Water-borne coating composition and coating film formation method - Google Patents
Water-borne coating composition and coating film formation method Download PDFInfo
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- JP2005320496A JP2005320496A JP2004260358A JP2004260358A JP2005320496A JP 2005320496 A JP2005320496 A JP 2005320496A JP 2004260358 A JP2004260358 A JP 2004260358A JP 2004260358 A JP2004260358 A JP 2004260358A JP 2005320496 A JP2005320496 A JP 2005320496A
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- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- HXHCOXPZCUFAJI-UHFFFAOYSA-N prop-2-enoic acid;styrene Chemical compound OC(=O)C=C.C=CC1=CC=CC=C1 HXHCOXPZCUFAJI-UHFFFAOYSA-N 0.000 description 1
- HJWLCRVIBGQPNF-UHFFFAOYSA-N prop-2-enylbenzene Chemical compound C=CCC1=CC=CC=C1 HJWLCRVIBGQPNF-UHFFFAOYSA-N 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 238000009418 renovation Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 229910052895 riebeckite Inorganic materials 0.000 description 1
- 229910052624 sepiolite Inorganic materials 0.000 description 1
- 235000019355 sepiolite Nutrition 0.000 description 1
- 235000015170 shellfish Nutrition 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000005368 silicate glass Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010454 slate Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 235000019832 sodium triphosphate Nutrition 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920001909 styrene-acrylic polymer Polymers 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- QUBMWJKTLKIJNN-UHFFFAOYSA-B tin(4+);tetraphosphate Chemical compound [Sn+4].[Sn+4].[Sn+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O QUBMWJKTLKIJNN-UHFFFAOYSA-B 0.000 description 1
- JUWGUJSXVOBPHP-UHFFFAOYSA-B titanium(4+);tetraphosphate Chemical compound [Ti+4].[Ti+4].[Ti+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O JUWGUJSXVOBPHP-UHFFFAOYSA-B 0.000 description 1
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 description 1
- 239000006097 ultraviolet radiation absorber Substances 0.000 description 1
- 150000003672 ureas Chemical class 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 239000010456 wollastonite Substances 0.000 description 1
- 229910052882 wollastonite Inorganic materials 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
- 229910000166 zirconium phosphate Inorganic materials 0.000 description 1
- LEHFSLREWWMLPU-UHFFFAOYSA-B zirconium(4+);tetraphosphate Chemical compound [Zr+4].[Zr+4].[Zr+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LEHFSLREWWMLPU-UHFFFAOYSA-B 0.000 description 1
Landscapes
- Paints Or Removers (AREA)
Abstract
Description
本発明は、艶消しの外観が表出でき、さらには下地への追従性にも優れる水性塗料組成物、及び該水性塗料組成物を用いた塗膜形成方法に関するものである。 The present invention relates to an aqueous coating composition that can exhibit a matte appearance and is excellent in followability to a base, and a coating film forming method using the aqueous coating composition.
従来、建築物や土木構造物等においては、その表面保護、美観性向上等の目的で種々の塗料によって塗装が行われている。この中でも、フラット塗料と呼ばれる塗料は、表面の艶が低減された塗膜を形成することができ、落ち着きのある仕上り感を得ることができることから、汎用的に用いられている。フラット塗料としては、JIS K5663「合成樹脂エマルションペイント」に規定されている塗料が代表的である。
ところが、フラット塗料では多量の顔料が混合されるため、通常その形成塗膜は硬くなりやすい。そのため、下地の変位に対する追従性が必要とされる部位には、あまり適していない。
2. Description of the Related Art Conventionally, buildings and civil engineering structures have been painted with various paints for the purpose of protecting the surface and improving aesthetics. Among these, a paint called a flat paint is widely used because it can form a coating film with a reduced surface gloss and can provide a calm finish. A typical example of the flat paint is a paint defined in JIS K5663 “Synthetic Resin Emulsion Paint”.
However, since a large amount of pigment is mixed in a flat paint, the formed coating film is usually hard. Therefore, it is not very suitable for a site where followability to the displacement of the ground is required.
これに対し、特許文献1(特開平11−21514号公報)では、弾性塗膜上に塗装可能な水性艶消し塗料が開示されている。該公報に記載の塗料は、ガラス転移温度が−30〜15℃であるカルボニル基含有共重合体のエマルションを結合剤とし、顔料体積濃度を25〜40%に調整したものである。
しかしながら、特許文献1に記載の水性艶消し塗料では、下地への追従性を確保するために顔料体積濃度を低く設定しなければならず、十分な艶消し効果が得られない場合がある。また、該公報の水性艶消し塗料を弾性塗膜上に塗装する場合、弾性塗膜が伸び率150%を超えるものであると、水性艶消し塗料の塗膜は弾性塗膜の変位に追従することができず、割れ、剥れ等が発生しやすくなる。すなわち、特許文献1に記載の水性艶消し塗料では、艶消し効果と下地への追従性の点において改善の余地がある。
On the other hand, Patent Document 1 (Japanese Patent Laid-Open No. 11-21514) discloses a water-based matte paint that can be applied on an elastic coating film. The paint described in the publication uses an emulsion of a carbonyl group-containing copolymer having a glass transition temperature of −30 to 15 ° C. as a binder, and the pigment volume concentration is adjusted to 25 to 40%.
However, in the water-based matte paint described in Patent Document 1, the pigment volume concentration has to be set low in order to ensure followability to the base, and a sufficient matte effect may not be obtained. Further, when the water-based matte paint of the publication is applied on an elastic coating, the coating of the water-based matte paint follows the displacement of the elastic coating if the elastic coating exceeds 150%. It is not possible to cause cracks and peeling. That is, the water-based matte paint described in Patent Document 1 has room for improvement in terms of the matte effect and the followability to the ground.
本発明は、上述のような問題点に鑑みなされたものであり、艶消しの外観が表出でき、さらには下地への追従性にも優れる水性塗料組成物、及び該水性塗料組成物を用いた塗膜形成方法を得ることを目的とするものである。 The present invention has been made in view of the above-described problems, and is capable of expressing a matte appearance and further being excellent in followability to a base, and uses the aqueous paint composition. The object is to obtain a coating film forming method.
本発明者は、上記目的を達成するため鋭意検討を行なった結果、艶消し剤として特定の有機質粉体を使用した水性塗料組成物に想到し、本発明を完成させるに到った。 As a result of intensive studies to achieve the above object, the present inventor has conceived an aqueous coating composition using a specific organic powder as a matting agent, and has completed the present invention.
すなわち、本発明は以下の特徴を有するものである。 That is, the present invention has the following characteristics.
ガラス転移温度が−60〜30℃である合成樹脂エマルション(I)、及び顔料(II)を含む顔料体積濃度20〜80%の水性塗料組成物であって、前記顔料(II)として、
平均粒子径が0.1〜100μmであり、ガラス転移温度−60〜60℃の重合体からなる有機質粉体(a)、及び/または
平均粒子径が0.1〜100μmであり、ガラス転移温度30℃未満の重合体からなるコア部とガラス転移温度30℃以上の重合体からなるシェル部を有する有機質粉体(b)
が(II)成分全体に対し5体積%以上含まれることを特徴とする水性塗料組成物。
An aqueous coating composition having a pigment volume concentration of 20 to 80% comprising a synthetic resin emulsion (I) having a glass transition temperature of −60 to 30 ° C. and a pigment (II), wherein the pigment (II) is:
Organic powder (a) made of a polymer having an average particle diameter of 0.1 to 100 μm and a glass transition temperature of −60 to 60 ° C. and / or an average particle diameter of 0.1 to 100 μm and a glass transition temperature Organic powder (b) having a core part made of a polymer of less than 30 ° C and a shell part made of a polymer having a glass transition temperature of 30 ° C or higher
Is contained in an amount of 5% by volume or more based on the total component (II).
前記顔料(II)としてさらに、
平均粒子径が0.1〜100μmである無機質粉体(c)、
平均粒子径が0.1〜100μmである有機質粉体(ガラス転移温度60℃以下の重合体を有するものを除く)(d)、
平均粒子径が0.1〜100μmである中空粉体(e)、
から選ばれる少なくとも1種以上を、
前記(a)成分及び/または(b)成分の合計量に対し、95:5〜5:95の体積比率で含むことを特徴とする1.記載の水性塗料組成物。
As the pigment (II),
Inorganic powder (c) having an average particle size of 0.1 to 100 μm,
Organic powder having an average particle diameter of 0.1 to 100 μm (excluding those having a polymer having a glass transition temperature of 60 ° C. or lower) (d),
Hollow powder (e) having an average particle diameter of 0.1 to 100 μm,
At least one selected from
1. It is contained in a volume ratio of 95: 5 to 5:95 with respect to the total amount of the component (a) and / or the component (b). The aqueous coating composition as described.
前記顔料(II)としてさらに、
平均粒子径が0.1〜100μmであり、モース硬度が7以下である無機質粉体(c−1)を、前記(a)成分及び/または(b)成分の合計量に対し、95:5〜5:95の体積比率で含むことを特徴とする1.記載の水性塗料組成物。
As the pigment (II),
The inorganic powder (c-1) having an average particle diameter of 0.1 to 100 μm and a Mohs hardness of 7 or less is 95: 5 with respect to the total amount of the component (a) and / or the component (b). Included in a volume ratio of ˜5: 95. The aqueous coating composition as described.
前記(c−1)成分の少なくとも1種が、平均粒子径0.5〜50μm、モース硬度0.5〜3.0の無機質粉体(c−1')であり、前記(a)成分及び/または(b)成分の合計量に対し、前記(c−1')成分を95:5〜5:95の体積比率で含むことを特徴とする3.に記載の水性塗料組成物。 At least one of the components (c-1) is an inorganic powder (c-1 ′) having an average particle size of 0.5 to 50 μm and a Mohs hardness of 0.5 to 3.0, and the component (a) and 2./(b) The above component (c-1 ′) is contained in a volume ratio of 95: 5 to 5:95 with respect to the total amount of component 3. The water-based paint composition described in 1.
前記(c)成分及び/または(d)成分において、吸放湿性を有する粉体を含むことを特徴とする2.〜4.のいずれかに記載の水性塗料組成物。 The component (c) and / or the component (d) includes a powder having moisture absorption / release properties. ~ 4. The water-based coating composition according to any one of the above.
前記(II)成分全体に対し、前記(a)及び/または(b)成分が30体積%以上含まれることを特徴とする1.〜5.のいずれかに記載の水性塗料組成物。 The component (a) and / or the component (b) is contained in an amount of 30% by volume or more based on the total component (II). ~ 5. The water-based coating composition according to any one of the above.
前記合成樹脂エマルション(I)の固形分100重量部に対し、さらに水分散型撥水剤(III)を固形分で1〜100重量部含むことを特徴とする1.〜6.のいずれかに記載の水性塗料組成物。 1. 1 to 100 parts by weight of a water-dispersible water repellent (III) is further contained in solid content with respect to 100 parts by weight of solid content of the synthetic resin emulsion (I) ~ 6. The water-based coating composition according to any one of the above.
基材に対し、形成塗膜の伸び率が50%以上である下塗材を塗付した後、上塗材として1.〜7.のいずれかに記載の水性塗料組成物を塗付することを特徴とする塗膜形成方法。 1. After applying a primer having an elongation of the formed coating film of 50% or more to the substrate, 1. ~ 7. A method for forming a coating film, comprising applying the aqueous coating composition according to any one of the above.
無機質基材または木質基材に対して、1.〜7.のいずれかに記載の水性塗料組成物を塗付することを特徴とする塗膜形成方法。 For inorganic substrates or wood substrates: ~ 7. A method for forming a coating film, comprising applying the aqueous coating composition according to any one of the above.
本発明によれば、艶消しの外観が表出でき、さらには下地への追従性にも優れる水性塗料組成物を得ることができる。 According to the present invention, it is possible to obtain a water-based coating composition that can exhibit a matte appearance and is excellent in followability to the groundwork.
以下、本発明を実施するための最良の形態について説明する。 Hereinafter, the best mode for carrying out the present invention will be described.
本発明の水性塗料組成物では、バインダーとして、ガラス転移温度が−60〜30℃である合成樹脂エマルション(以下「(I)成分」という)を使用する。
具体的に(I)成分としては、例えば、酢酸ビニル樹脂エマルション、塩化ビニル樹脂エマルション、エポキシ樹脂エマルション、アクリル樹脂エマルション、ウレタン樹脂エマルション、アクリルシリコン樹脂エマルション、フッ素樹脂エマルション等、あるいはこれらの複合系等を挙げることができる。これらは1種または2種以上で使用することができる。
In the aqueous coating composition of the present invention, a synthetic resin emulsion (hereinafter referred to as “component (I)”) having a glass transition temperature of −60 to 30 ° C. is used as a binder.
Specifically, as the component (I), for example, a vinyl acetate resin emulsion, a vinyl chloride resin emulsion, an epoxy resin emulsion, an acrylic resin emulsion, a urethane resin emulsion, an acrylic silicon resin emulsion, a fluororesin emulsion, or a composite system thereof. Can be mentioned. These can be used alone or in combination of two or more.
また、(I)成分は架橋反応性を有するものであってもよい。(I)成分が架橋反応型合成樹脂エマルションである場合は、塗膜の耐水性、耐候性、密着性等を高めることができる。架橋反応型合成樹脂エマルションは、それ自体で架橋反応を生じるもの、あるいは別途混合する架橋剤によって架橋反応を生じるもののいずれであってもよい。このような架橋反応性は、例えば、カルボキシル基と金属イオン、カルボキシル基とカルボジイミド基、カルボキシル基とエポキシ基、カルボキシル基とアジリジン基、カルボキシル基とオキサゾリン基、水酸基とイソシアネート基、カルボニル基とヒドラジド基、エポキシ基とアミノ基、アルド基とセミカルバジド基、ケト基とセミカルバジド基、アルコキシル基どうし等の反応性官能基を組み合わせることによって付与することができる。 Further, the component (I) may have crosslinking reactivity. When the component (I) is a crosslinking reaction type synthetic resin emulsion, the water resistance, weather resistance, adhesion and the like of the coating film can be improved. The crosslinking reaction type synthetic resin emulsion may be either one that causes a crosslinking reaction by itself or one that causes a crosslinking reaction by a separately mixed crosslinking agent. Such crosslinking reactivity includes, for example, carboxyl group and metal ion, carboxyl group and carbodiimide group, carboxyl group and epoxy group, carboxyl group and aziridine group, carboxyl group and oxazoline group, hydroxyl group and isocyanate group, carbonyl group and hydrazide group. It can be imparted by combining reactive functional groups such as epoxy groups and amino groups, aldo groups and semicarbazide groups, keto groups and semicarbazide groups, and alkoxyl groups.
(I)成分の製造方法は特に限定されないが、例えば、乳化重合、ソープフリー乳化重合、分散重合、フィード乳化重合、フィード分散重合、シード乳化重合、シード分散重合等を採用することができる。 Although the manufacturing method of (I) component is not specifically limited, For example, emulsion polymerization, soap-free emulsion polymerization, dispersion polymerization, feed emulsion polymerization, feed dispersion polymerization, seed emulsion polymerization, seed dispersion polymerization, etc. are employable.
(I)成分のガラス転移温度(以下「Tg」という)は通常−60〜30℃、好ましくは−40〜25℃、より好ましくは−30〜20℃に設定する。Tgが高すぎる場合は、下地への追従性が不十分となり、塗膜に割れが発生しやすくなる。Tgが低すぎる場合は、塗膜表面に汚染物質が付着しやすくなり、実用的でない。なお、本発明におけるTgは、(I)成分を構成するモノマーの種類とその構成比率から、Foxの計算式によって求められる値である。
(I)成分の平均粒子径は、通常0.05〜0.4μm程度である。
The glass transition temperature (hereinafter referred to as “Tg”) of the component (I) is usually set to −60 to 30 ° C., preferably −40 to 25 ° C., more preferably −30 to 20 ° C. When Tg is too high, followability to the ground becomes insufficient, and cracks are likely to occur in the coating film. When Tg is too low, contaminants tend to adhere to the coating surface, which is not practical. The Tg in the present invention is a value obtained from the formula of Fox from the type of monomer constituting the component (I) and its constituent ratio.
(I) The average particle diameter of a component is about 0.05-0.4 micrometer normally.
本発明では、上記(I)成分に対し、顔料(以下「(II)成分」という)を混合する。本発明では(II)成分として、特定の粉体を使用することにより、艶消し効果と下地への追従性とを兼ね備えた塗料を得ることができる。 In the present invention, a pigment (hereinafter referred to as “component (II)”) is mixed with the component (I). In the present invention, by using a specific powder as the component (II), it is possible to obtain a paint having both a matte effect and followability to the ground.
第1の(II)成分は、平均粒子径が0.1〜100μmであり、Tg−60〜60℃の重合体からなる有機質粉体(以下「(a)成分」という)である。(a)成分の平均粒子径は、通常0.1〜100μm、好ましくは0.5〜50μm、より好ましくは1〜30μmである。 The first component (II) is an organic powder (hereinafter referred to as “component (a)”) having an average particle size of 0.1 to 100 μm and comprising a polymer having a Tg of 60 to 60 ° C. (A) The average particle diameter of a component is 0.1-100 micrometers normally, Preferably it is 0.5-50 micrometers, More preferably, it is 1-30 micrometers.
(a)成分の重合体は、各種重合性モノマーを共重合することによって形成されるものである。使用可能な重合性モノマーとしては、例えば、エチル(メタ)アクリレート、プロピル(メタ)アクリレート、ブチル(メタ)アクリレート、シクロヘキシル(メタ)アクリレート、2−エチルヘキシル(メタ)アクリレート、イソノニル(メタ)アクリレート、ラウロイル(メタ)アクリレート、ステアリル(メタ)アクリレート等のアルキル(メタ)アクリレートスチレン、ビニルトルエン、α−メチルスチレン等の芳香族ビニルモノマー等が挙げられる。分子内に2個以上のビニル基を有する多官能モノマー等も使用可能である。 The polymer of component (a) is formed by copolymerizing various polymerizable monomers. Examples of polymerizable monomers that can be used include ethyl (meth) acrylate, propyl (meth) acrylate, butyl (meth) acrylate, cyclohexyl (meth) acrylate, 2-ethylhexyl (meth) acrylate, isononyl (meth) acrylate, and lauroyl. Examples include alkyl (meth) acrylate styrene such as (meth) acrylate and stearyl (meth) acrylate, aromatic vinyl monomers such as vinyltoluene and α-methylstyrene. A polyfunctional monomer having two or more vinyl groups in the molecule can also be used.
(a)成分のTgは、通常−60〜60℃、好ましくは−50〜50℃、より好ましくは−40〜40℃である。(a)成分のTgは、重合体を構成するモノマーの種類や比率を適宜設定することによって調整できる。Tgが高すぎる場合は、下地への追従性において十分な性能を得ることができず、Tgが低すぎる場合は、耐汚染性等の点で不利となる。 (A) Tg of a component is -60-60 degreeC normally, Preferably it is -50-50 degreeC, More preferably, it is -40-40 degreeC. (A) Tg of a component can be adjusted by setting suitably the kind and ratio of the monomer which comprise a polymer. When Tg is too high, sufficient performance cannot be obtained in the followability to the base, and when Tg is too low, it is disadvantageous in terms of contamination resistance.
本発明では、上記(a)に代えて、平均粒子径が0.1〜100μmであり、Tg30℃未満の重合体からなるコア部とTg30℃以上の重合体からなるシェル部を有する有機質粉体(以下「(b)成分」という)を使用することができる。このような(b)成分を使用することにより、艶消し効果と下地への追従性をより高めることができる。この場合、(a)成分と(b)成分を混合して使用することもできる。
(b)成分の平均粒子径は、通常0.1〜100μm、好ましくは0.5〜50μm、より好ましくは1〜30μmである。
In the present invention, in place of the above (a), an organic powder having an average particle size of 0.1 to 100 μm and having a core part made of a polymer having a Tg of less than 30 ° C. and a shell part made of a polymer having a Tg of 30 ° C. or more. (Hereinafter referred to as “component (b)”) can be used. By using such a component (b), the matte effect and the followability to the ground can be further enhanced. In this case, the component (a) and the component (b) can be mixed and used.
(B) The average particle diameter of a component is 0.1-100 micrometers normally, Preferably it is 0.5-50 micrometers, More preferably, it is 1-30 micrometers.
(b)成分のコア部のTgは、通常30℃未満、好ましくは−60〜20℃、より好ましくは−60〜10℃である。シェル部のTgは、通常30℃以上、好ましくは50〜140℃、より好ましくは60〜130℃である。
(b)成分においては、コア部及びシェル部のTgが所定の範囲内となる限り、重合体を構成するモノマーは特に制限されず、上述の(a)成分と同様のモノマーからなるものも使用できる。
なお、(a)成分、(b)成分は、いずれも非造膜性の粉体であり、造膜性を有する(I)成分とは別異の材料である。
(B) Tg of the core part of a component is usually less than 30 degreeC, Preferably it is -60-20 degreeC, More preferably, it is -60-10 degreeC. The Tg of the shell part is usually 30 ° C. or higher, preferably 50 to 140 ° C., more preferably 60 to 130 ° C.
In the component (b), as long as the Tg of the core part and the shell part is within a predetermined range, the monomer constituting the polymer is not particularly limited, and the same monomer as the component (a) is used. it can.
The component (a) and the component (b) are both non-film-forming powders and are different materials from the component (I) having film-forming properties.
(a)成分及び/または(b)成分の混合比率は、(II)成分全体に対し、通常合計で5体積%以上、好ましくは10体積%以上、より好ましくは20体積%以上、さらに好ましくは30体積%以上である。このような混合比率であれば、艶消し効果と下地への追従性の両性能が十分に発揮できる。 The mixing ratio of the component (a) and / or the component (b) is generally 5% by volume or more, preferably 10% by volume or more, more preferably 20% by volume or more, more preferably, based on the total of the component (II). 30% by volume or more. With such a mixing ratio, both the matting effect and the followability to the substrate can be sufficiently exhibited.
第2の(II)成分としては、
平均粒子径が0.1〜100μmである無機質粉体(以下「(c)成分」という)、
平均粒子径が0.1〜100μmである有機質粉体(ガラス転移温度60℃以下の重合体を有するものを除く)(以下「(d)成分」という)、
平均粒子径が0.1〜100μmである中空粉体(以下「(e)成分」という)、
から選ばれる少なくとも1種以上が使用できる。
As the second component (II),
An inorganic powder having an average particle size of 0.1 to 100 μm (hereinafter referred to as “component (c)”),
Organic powder having an average particle diameter of 0.1 to 100 μm (excluding those having a polymer having a glass transition temperature of 60 ° C. or lower) (hereinafter referred to as “component (d)”),
A hollow powder having an average particle size of 0.1 to 100 μm (hereinafter referred to as “component (e)”),
At least one selected from the group consisting of:
上述の成分のうち、(c)成分を使用した場合には、形成塗膜の隠ぺい性、艶消し効果、強度、肉厚感、塗装時の作業性等を高めることができ、コスト面においても有利である。(c)成分の見かけ比重(以下単に「比重」という)は、通常1〜5である。 Among the above-mentioned components, when the component (c) is used, the concealability of the formed coating film, matting effect, strength, wall thickness, workability at the time of coating, etc. can be improved. It is advantageous. The apparent specific gravity (hereinafter simply referred to as “specific gravity”) of the component (c) is usually 1 to 5.
(c)成分としては、平均粒子径が0.1〜100μmであり、モース硬度が7以下である無機質粉体(以下「(c−1)成分」という)が好適である。本発明では、このような粒子径と硬度特性を有する無機質粉体を、上述の(a)成分及び/または(b)成分と組み合せることによって、下地への追従性において優れた物性を得ることができる。なお、本発明におけるモース硬度は、モースの硬度計を用いて測定される値である(但しダイヤモンドを10とする)。
(c−1)成分としては、平均粒子径及びモース硬度が上記範囲内である無機質粉体の1種または2種以上が使用できるが、本発明では、(c−1)成分の少なくとも1種が、平均粒子径0.5〜50μm、モース硬度0.5〜3.0の無機質粉体であることがより望ましい。
As the component (c), an inorganic powder (hereinafter referred to as “component (c-1)”) having an average particle diameter of 0.1 to 100 μm and a Mohs hardness of 7 or less is preferable. In the present invention, an inorganic powder having such particle diameter and hardness characteristics is combined with the above-described component (a) and / or component (b) to obtain excellent physical properties in the followability to the ground. Can do. The Mohs hardness in the present invention is a value measured using a Mohs hardness meter (where diamond is 10).
As the component (c-1), one or more inorganic powders having an average particle diameter and a Mohs hardness within the above ranges can be used. In the present invention, at least one component (c-1) is used. However, an inorganic powder having an average particle diameter of 0.5 to 50 μm and a Mohs hardness of 0.5 to 3.0 is more desirable.
(c−1)成分としては、平均粒子径とモース硬度が所定の範囲内であれば特に限定されず、公知の無機質粉体を使用することができる。このような(c−1)成分としては、例えば、タルク、ろう石、珪藻土、クレー、カオリン、焼成クレー、マイカ、酸化鉄、炭酸カルシウム、硫酸バリウム、酸化亜鉛、ドロマイト、酸化チタン等が挙げられる。この中でも、タルク、クレー、カオリン、マイカ等の鱗片状無機質粉体は、下地への追従性の点で好適である。 The component (c-1) is not particularly limited as long as the average particle diameter and the Mohs hardness are within a predetermined range, and a known inorganic powder can be used. Examples of the component (c-1) include talc, wax, diatomaceous earth, clay, kaolin, calcined clay, mica, iron oxide, calcium carbonate, barium sulfate, zinc oxide, dolomite, and titanium oxide. . Among these, scaly inorganic powders such as talc, clay, kaolin, and mica are preferable in terms of followability to the substrate.
(c−1)成分の吸油量は、通常200ml/100g以下、好ましくは150ml/100g以下、より好ましくは100ml/100g、さらに好ましくは80ml/100g以下である。(c−1)成分の吸油量が大きすぎる場合は、下地への追従性が不十分となるおそれがある。 The oil absorption amount of the component (c-1) is usually 200 ml / 100 g or less, preferably 150 ml / 100 g or less, more preferably 100 ml / 100 g, still more preferably 80 ml / 100 g or less. When the oil absorption amount of the component (c-1) is too large, the followability to the ground may be insufficient.
(d)成分としては、平均粒子径が0.1〜100μmである有機質粉体(ガラス転移温度60℃以下の重合体を有するものを除く)が使用できる。このような(d)成分は塗料への分散性に優れるため、塗料中の分散剤等の添加量を減らすことができる。また、(d)成分の使用は、形成塗膜の艶消し効果、肉厚感、割れ防止性、耐薬品性、耐傷付性等の点においても効果的である。(d)成分の比重は、通常0.8〜2である。 As the component (d), an organic powder having an average particle diameter of 0.1 to 100 μm (excluding those having a polymer having a glass transition temperature of 60 ° C. or lower) can be used. Since the component (d) is excellent in dispersibility in the paint, it is possible to reduce the amount of the dispersant added in the paint. The use of component (d) is also effective in terms of the matte effect of the formed coating film, thickness, crack prevention, chemical resistance, scratch resistance, and the like. (D) The specific gravity of a component is 0.8-2 normally.
(d)成分としては、例えば、ウレタンビーズ、アクリルビーズ、ポリエチレンビーズ、ポリプロピレンビーズ、ポリメタクリル酸メチルビーズ、ポリスチレンビーズ、ナイロンビーズ、スチレンアクリルビーズ、シリコンビーズ、フッ素ビーズ、セルロースビーズ、塩化ビニルビーズ、EVAビーズ等が挙げられる。これらは1種または2種以上で使用することができる。 Examples of the component (d) include urethane beads, acrylic beads, polyethylene beads, polypropylene beads, polymethyl methacrylate beads, polystyrene beads, nylon beads, styrene acrylic beads, silicon beads, fluorine beads, cellulose beads, vinyl chloride beads, Examples include EVA beads. These can be used alone or in combination of two or more.
(e)成分としては、平均粒子径が0.1〜100μmである中空粉体が使用できる。このような(e)成分を使用することにより、形成塗膜の隠ぺい性、肉厚感、割れ防止性、塗装時の作業性等を高めることができる。(e)成分の比重は、通常0.01以上0.8未満である。 (E) As a component, the hollow powder whose average particle diameter is 0.1-100 micrometers can be used. By using such a component (e), it is possible to improve the concealability, thickness, crack prevention, workability during coating, and the like of the formed coating film. The specific gravity of the component (e) is usually 0.01 or more and less than 0.8.
(e)成分としては、例えば、中空セラミックビーズ、中空樹脂ビーズ等が挙げられる。中空セラミックビーズを構成するセラミック成分としては、例えば、珪酸ソーダガラス、アルミ珪酸ガラス、硼珪酸ソーダガラス、カーボン、アルミナ、シラス、黒曜石等が挙げられる。中空樹脂ビーズを構成する樹脂成分としては、例えば、アクリル樹脂、スチレン樹脂、アクリル−スチレン共重合樹脂、アクリル−アクリロニトリル共重合樹脂、アクリル−スチレン−アクリロニトリル共重合樹脂、アクリロニトリル−メタアクリロニトリル共重合樹脂、アクリル−アクリロニトリル−メタアクリロニトリル共重合樹脂、塩化ビニリデン−アクリロニトリル共重合樹脂等が挙げられる。これらは1種または2種以上で使用することができる。 Examples of the component (e) include hollow ceramic beads and hollow resin beads. Examples of the ceramic component constituting the hollow ceramic beads include sodium silicate glass, aluminum silicate glass, borosilicate soda glass, carbon, alumina, shirasu, obsidian and the like. Examples of the resin component constituting the hollow resin beads include acrylic resin, styrene resin, acrylic-styrene copolymer resin, acrylic-acrylonitrile copolymer resin, acrylic-styrene-acrylonitrile copolymer resin, acrylonitrile-methacrylonitrile copolymer resin, Examples thereof include acrylic-acrylonitrile-methacrylonitrile copolymer resins and vinylidene chloride-acrylonitrile copolymer resins. These can be used alone or in combination of two or more.
本発明では、上述の(c)成分及び/または(d)成分において、吸放湿性を有する粉体(以下「吸放湿性粉体」という)を使用することもできる。このような吸放湿性粉体を使用することにより、下地への追従性を確保しつつ、基材の呼吸性や透湿性等を阻害しない塗膜が形成可能となり、基材中の水分を効率良く外部に拡散させる作用によって、塗膜の膨れ、剥れ等を十分に抑制することもできる。したがって、このような吸放湿性粉体を含む場合は、とりわけ無機質基材(特にセメント系無機質基材)や木質基材の塗装に好適な塗料を得ることができる。 In the present invention, a powder having moisture absorption / release properties (hereinafter referred to as “moisture absorption / release powder”) can also be used in the component (c) and / or the component (d). By using such moisture-absorbing / releasing powder, it is possible to form a coating film that does not impair the breathability and moisture permeability of the base material while ensuring followability to the substrate, and efficiently use the moisture in the base material. The swelling and peeling of the coating film can be sufficiently suppressed by the action of diffusing well outside. Therefore, when such a moisture-absorbing / releasing powder is included, it is possible to obtain a paint particularly suitable for coating an inorganic substrate (particularly a cement-based inorganic substrate) or a wooden substrate.
吸放湿性粉体としては、例えば、ベーマイト、シリカゲル、ゼオライト、硫酸ナトリウム、アルミナ、アロフェン、珪藻土、珪質頁岩、セピオライト、アタバルジャイト、モンモリロナイト、ゾノライト、イモゴライト、大谷石粉、活性白土、木炭、竹炭、活性炭、木粉、貝殻粉、アルギン酸ビーズ、多孔質合成樹脂粒等が挙げられる。
このような吸放湿性粉体は、吸放湿性能に加え、各種の化学物質を吸着する性能を発揮する場合もある。具体的には、ホルムアルデヒド等の揮発性有機化合物を吸着する性能、あるいは下地に含まれるヤニ、アク等の滲出を抑制する性能等が期待できる。
Examples of the hygroscopic powder include boehmite, silica gel, zeolite, sodium sulfate, alumina, allophane, diatomaceous earth, siliceous shale, sepiolite, attabargite, montmorillonite, zonolite, imogolite, Otani stone powder, activated clay, charcoal, bamboo charcoal, activated carbon Wood powder, shellfish powder, alginate beads, porous synthetic resin particles, and the like.
Such moisture-absorbing / releasing powder may exhibit the ability to adsorb various chemical substances in addition to the moisture-releasing performance. Specifically, the performance of adsorbing volatile organic compounds such as formaldehyde or the performance of suppressing exudation of spears, acupuncture and the like contained in the base can be expected.
化学物質の吸着性能を高めるには、上記吸放湿性粉体に代えて、あるいは上記吸放湿性粉体と併せて化学物質吸着剤を使用すればよい。このような化学物質吸着剤は、ホルムアルデヒド、アンモニア、硫化水素、メチルメルカプタン、トリメチルアミン、ニコチン等の吸着、再放出防止に有効な成分である。化学物質吸着剤としては、例えばトリポリリン酸アルミニウム、トリポリリン酸二水素アルミニウム、層状リン酸ジルコニウム、層状リン酸チタン、層状リン酸ハフニウム、層状リン酸スズ、層状リン酸塩ポリアミン層間化合物、活性酸化亜鉛、含水珪酸マグネシウム、ハイドロタルサイト、フライポンタイト等が挙げられる。 In order to improve the adsorption performance of the chemical substance, a chemical substance adsorbent may be used instead of the hygroscopic powder or in combination with the hygroscopic powder. Such a chemical substance adsorbent is an effective component for preventing adsorption and re-release of formaldehyde, ammonia, hydrogen sulfide, methyl mercaptan, trimethylamine, nicotine and the like. Examples of the chemical adsorbent include aluminum tripolyphosphate, aluminum dihydrogen phosphate, layered zirconium phosphate, layered titanium phosphate, layered hafnium phosphate, layered tin phosphate, layered phosphate polyamine intercalation compound, active zinc oxide, Examples thereof include hydrous magnesium silicate, hydrotalcite, and frypontite.
本発明では、上述の(c)成分において光触媒物質を使用することもできる。特に、このような光触媒物質は、上述の吸放湿性粉体や化学物質吸着剤と併用することで、化学物質の分解、再放出防止に有効に作用する。光触媒物質としては、例えばTiO2、ZnO、Bi2O3、BiVO4、SrTiO3、CdS、InP、InPb、GaP、GaAs、BaTiO3、BaTiO4、BaTi4O9、K2NbO3、Nb2O5、Fe2O3、Ta2O5、Ta3N5、K3Ta3Si2O3、WO3、SnO2、NiO、Cu2O、SiC、MoS2、RuO2、CeO2等の他、これらと金属、金属酸化物、層状化合物等との複合体等が挙げられる。 In the present invention, a photocatalytic substance can also be used in the above-mentioned component (c). In particular, such a photocatalytic substance effectively works to prevent decomposition and re-release of chemical substances when used in combination with the above-described moisture-absorbing / releasing powder and chemical substance adsorbent. Examples of the photocatalytic substance include TiO2, ZnO, Bi2O3, BiVO4, SrTiO3, CdS, InP, InPb, GaP, GaAs, BaTiO3, BaTiO4, BaTi4O9, K2NbO3, Nb2O5, Fe2O3, Ta2O3, Ta3N5, S3, In addition to Cu 2 O, SiC, MoS 2, RuO 2, CeO 2 and the like, composites of these with metals, metal oxides, layered compounds, and the like can be given.
以上に示した(c)成分、(d)成分、(e)成分は、前記(a)成分及び/または(b)成分の合計量に対し、通常95:5〜5:95、好ましくは90:10〜10:90、より好ましくは80:20〜20:80、さらに好ましくは70:30〜30:70の体積比率((a+b):(c+d+e))で使用する。艶消し効果と下地への追従性の両性能を十分に発揮させるには、このような範囲内で各成分を使用することが望ましい。
なお、(c−1)成分として(c−1')成分を含む場合は、(a)成分及び/または(b)成分の合計量に対する(c−1')成分の体積比率が、上記範囲内となるように調製することが望ましい。
The components (c), (d), and (e) shown above are usually 95: 5 to 5:95, preferably 90, with respect to the total amount of the components (a) and / or (b). : 10 to 10:90, more preferably 80:20 to 20:80, and still more preferably 70:30 to 30:70 in a volume ratio ((a + b) :( c + d + e)). In order to sufficiently exhibit both the matte effect and the followability to the ground, it is desirable to use each component within such a range.
In addition, when (c-1 ') component is included as (c-1) component, the volume ratio of (c-1') component with respect to the total amount of (a) component and / or (b) component is the said range. It is desirable to prepare so as to be within.
本発明組成物の顔料体積濃度は、通常20〜80%、好ましくは30〜70%、より好ましくは40〜65%、さらに好ましくは45〜60%である。顔料体積濃度がこのような範囲内であることにより、十分な艶消し効果を得ることができる。さらに、本発明では(II)成分として特定の粉体を使用するため、下地への追従性を確保することもできる。顔料体積濃度が高すぎる場合は、下地への追従性が不十分となり、塗膜に割れが発生しやすくなる。顔料体積濃度が低すぎる場合は、艶消し効果が不十分となる。なお、上記成分以外の(II)成分としては、例えば、着色顔料、骨材、繊維類等が使用できる。 The pigment volume concentration of the composition of the present invention is usually 20 to 80%, preferably 30 to 70%, more preferably 40 to 65%, and further preferably 45 to 60%. When the pigment volume concentration is within such a range, a sufficient matting effect can be obtained. Furthermore, in this invention, since specific powder is used as (II) component, the followable | trackability to a foundation | substrate can also be ensured. When the pigment volume concentration is too high, the followability to the ground becomes insufficient, and cracks are likely to occur in the coating film. When the pigment volume concentration is too low, the matting effect is insufficient. As the component (II) other than the above components, for example, coloring pigments, aggregates, fibers and the like can be used.
本発明における顔料容積濃度は、乾燥塗膜中に含まれる(II)成分の容積百分率であり、下記式によって算出される値である。後述の(III)成分は実質的に造膜性能を有さないため、顔料容積濃度算出の際には除外しておく。 The pigment volume concentration in the present invention is a volume percentage of the component (II) contained in the dry coating film, and is a value calculated by the following formula. Since the component (III) described later has substantially no film-forming performance, it is excluded when calculating the pigment volume concentration.
<式>顔料容積濃度(%)=[(cw/cρ)/{(aw/aρ)+(cw/cρ)}]×100
(式中、awは(I)成分固形分の混合重量、aρは(I)成分固形分の比重、cwは(II)成分の混合重量、cρは(II)成分の比重を示す。)
<Formula> Pigment volume concentration (%) = [(cw / cρ) / {(aw / aρ) + (cw / cρ)}] × 100
(Wherein, aw represents the mixing weight of component (I), aρ represents the specific gravity of component (I), cw represents the mixing weight of component (II), and cρ represents the specific gravity of component (II).)
本発明組成物では、上記成分に加え、さらに水分散型撥水剤(以下「(III)成分」という)を含むことができる。本発明では、このような(III)成分の作用により、下地への追従性を確保しつつ、塗膜の遮水効果、透湿効果等を高めることができ、塗膜の膨れ、剥れ等を十分に抑制することもできる。したがって、(III)成分を含む場合は、無機質基材(特にセメント系無機質基材)や木質基材の塗装に適した塗料が得られる。(III)成分の形態は、水中に分散した形態であれば特に制限されず、界面活性剤を用いた強制乳化型エマルション、あるいは自己乳化型エマルションのいずれであってもよい。 The composition of the present invention may further contain a water-dispersed water repellent (hereinafter referred to as “component (III)”) in addition to the above components. In the present invention, the action of such a component (III) can enhance the water-blocking effect, moisture-permeable effect, etc. of the coating film while ensuring followability to the base, such as swelling and peeling of the coating film. Can be sufficiently suppressed. Therefore, when (III) component is included, the coating material suitable for the coating of an inorganic base material (especially cement-type inorganic base material) or a wooden base material is obtained. The form of component (III) is not particularly limited as long as it is dispersed in water, and may be either a forced emulsification type emulsion using a surfactant or a self-emulsification type emulsion.
(III)成分としては、(p)アミノ基、カルボキシル基、エポキシ、反応性シリル基から選ばれる少なくとも1種の官能基を有する水分散型撥水剤(以下「(p)成分」という)が好適である。このような(p)成分を使用すれば、遮水効果、透湿効果等の性能を長期にわたり発揮することが可能となる。このうち、(p)成分が反応性シリル基を有する場合、(I)成分としては反応性シリル基を有するものが好適である。(p)成分がアミノ基及び/またはカルボキシル基を有する場合は、(I)成分としてはエポキシ基を有するものが好適である。(p)成分がエポキシ基を有する場合は、(I)成分としてはカルボキシル基及び/またはアミノ基を有するものが好適である。 As the component (III), (p) a water-dispersed water repellent (hereinafter referred to as “(p) component”) having at least one functional group selected from an amino group, a carboxyl group, an epoxy, and a reactive silyl group. Is preferred. If such a (p) component is used, it becomes possible to exhibit performance, such as a water-impervious effect and a moisture-permeable effect, over a long period of time. Of these, when the component (p) has a reactive silyl group, the component (I) preferably has a reactive silyl group. When the component (p) has an amino group and / or a carboxyl group, the component (I) preferably has an epoxy group. When the component (p) has an epoxy group, the component (I) preferably has a carboxyl group and / or an amino group.
(p)成分は、通常下記式(1)、(2)で示される単位を有するものである。 The component (p) usually has units represented by the following formulas (1) and (2).
(III)成分の混合比率は、(I)成分の固形分100重量部に対し、固形分換算で通常1〜100重量部、好ましくは2〜50重量部、より好ましくは3〜30重量部である。 The mixing ratio of the component (III) is usually 1 to 100 parts by weight, preferably 2 to 50 parts by weight, more preferably 3 to 30 parts by weight in terms of the solid content with respect to 100 parts by weight of the solid content of the component (I). is there.
本発明組成物においては、上述の成分の他に、通常塗料に使用可能な成分を含むこともできる。このような成分としては、例えば、増粘剤、造膜助剤、レベリング剤、湿潤剤、可塑剤、凍結防止剤、pH調整剤、防腐剤、防黴剤、防藻剤、抗菌剤、吸着剤、分散剤、消泡剤、紫外線吸収剤、酸化防止剤、触媒、架橋剤等が使用可能である。このうち吸着剤としては、例えばアミン化合物、尿素化合物、アミド化合物、イミド化合物、ヒドラジド化合物、アゾール化合物、アジン化合物等が使用できる。
本発明組成物は、以上のような成分を常法で均一に混合することにより製造することができる。本発明組成物は、通常は着色塗料として使用するものであるが、クリヤー塗料として使用することも可能である。
In the composition of the present invention, in addition to the above-described components, components that can be used in ordinary paints can also be included. Such components include, for example, thickeners, film-forming aids, leveling agents, wetting agents, plasticizers, antifreeze agents, pH adjusters, antiseptics, antifungal agents, antialgae agents, antibacterial agents, adsorption An agent, a dispersant, an antifoaming agent, an ultraviolet absorber, an antioxidant, a catalyst, a crosslinking agent, and the like can be used. Among these, as the adsorbent, for example, amine compounds, urea compounds, amide compounds, imide compounds, hydrazide compounds, azole compounds, azine compounds and the like can be used.
The composition of the present invention can be produced by uniformly mixing the above components by a conventional method. The composition of the present invention is usually used as a colored paint, but can also be used as a clear paint.
本発明組成物は、主に建築物、土木構造物等における表面仕上げ材(上塗材)として好適に使用できる。塗装の対象となる基材は特に限定されないが、無機質基材または木質基材が好適である。 The composition of the present invention can be suitably used as a surface finishing material (coating material) mainly in buildings, civil engineering structures and the like. Although the base material used as the object of coating is not specifically limited, An inorganic base material or a wooden base material is suitable.
無機質基材としては、特にセメント系無機質基材が好適である。本発明組成物をセメント系無機質基材に塗装した場合には、本発明の効果を十分に発揮することができる。このようなセメント系無機質基材は、セメントを必須成分として得られる材料である。セメント以外の成分として、例えば、珪砂、珪石、フライアッシュ等の骨材、パルプ、ガラスウール等の繊維類等が含まれていてもよい。 As the inorganic substrate, a cement-based inorganic substrate is particularly suitable. When the composition of the present invention is coated on a cement-based inorganic base material, the effects of the present invention can be sufficiently exerted. Such a cement-based inorganic base material is a material obtained by using cement as an essential component. As components other than cement, for example, aggregates such as silica sand, silica stone, and fly ash, fibers such as pulp and glass wool, and the like may be included.
具体的に、セメント系無機質基材としては、例えば、コンクリート、モルタル、繊維混入セメント板、セメント珪酸カルシウム板、スラグセメントパーライト板、石綿セメント板、ALC板、サイディング板等が挙げられる。このうち、コンクリート、モルタル等の基材は、通常、施工現場で水等と混練したものを硬化させることによって得られる。ALC板、サイディング板等の無機質建材は、抄造法、押し出し成形法、注型法等の各種方法によって板状に成形されたものである。これら基材の表面は、何らかの表面処理(例えば、シーラー、サーフェーサー、パテ、フィラー等)が施されたものでもよく、既に塗膜が形成されたものでもよい。 Specifically, examples of the cement-based inorganic base material include concrete, mortar, fiber-mixed cement board, cement calcium silicate board, slag cement pearlite board, asbestos cement board, ALC board, and siding board. Among these, base materials such as concrete and mortar are usually obtained by curing a material kneaded with water or the like at a construction site. Inorganic building materials such as ALC plates and siding plates are formed into plates by various methods such as papermaking, extrusion, and casting. The surface of these base materials may have been subjected to some surface treatment (for example, a sealer, a surfacer, a putty, a filler, etc.), or may have already been formed with a coating film.
木質基材としては、例えば、ブナ、ヒノキ、すぎ、なら、チーク、ラワン等の造作材、集成材・積層材、普通合板、木質繊維板・パーティクルボード等が挙げられる。これらは、難燃処理したもの等であってもよい。また、基材表面に、何らかの表面処理(例えば、シーラー、サーフェーサー、パテ、フィラー等)が施されたものでも、既に塗膜が形成されたものでもよい。 Examples of the wood base material include beech, cypress, too much, artificial materials such as teak and lauan, laminated wood / laminate, ordinary plywood, wood fiberboard / particle board, and the like. These may be flame retardant treated. Moreover, the surface of the base material may have been subjected to some surface treatment (for example, a sealer, a surfacer, a putty, a filler, etc.), or a coating film may be already formed.
本発明組成物を建築現場等において塗装する場合は、新築、改装を問わず適用することができる。板状の建材に対しては、建築現場等に搬入される前(すなわち建材の成形時ないし成形後)に塗装を行うこともできる。また、部分補修に適用することもできる。 When the composition of the present invention is painted at a construction site or the like, it can be applied regardless of whether it is a new construction or a renovation. The plate-shaped building material can be coated before being brought into a construction site or the like (that is, during or after the building material is molded). It can also be applied to partial repairs.
本発明組成物の塗付前には、何らかの下塗材を塗付することもできる。
この場合、下塗材としては、形成塗膜の伸び率が50%以上(好ましくは100%以上、より好ましくは150%以上)である下塗材が好適である。このような下塗材を使用することにより、基材への密着性、エフロレッセンス防止効果等において十分な性能を確保することができる。さらに、本発明組成物は、このような弾性下塗材に対しても十分な追従性を発揮することができる。なお、本発明における伸び率は、JIS A6909:2003 7.29「伸び試験」の「20℃時の伸び試験」によって測定される値である。
Before applying the composition of the present invention, any primer can be applied.
In this case, as the undercoat material, an undercoat material having an elongation percentage of the formed coating film of 50% or more (preferably 100% or more, more preferably 150% or more) is suitable. By using such an undercoat material, sufficient performance can be ensured in terms of adhesion to a substrate, efflorescence prevention effect, and the like. Furthermore, the composition of the present invention can exhibit sufficient followability to such an elastic primer. The elongation percentage in the present invention is a value measured by “elongation test at 20 ° C.” of JIS A6909: 2003 7.29 “elongation test”.
このような下塗材は通常、合成樹脂エマルションを必須成分として含み、必要に応じさらに充填材、各種添加剤等を含有するものである。JIS A6909に規定されている複層仕上塗材の主材等も、本発明における下塗材として使用することができる。
下塗材における合成樹脂エマルションの種類としては特に限定されず、例えば、酢酸ビニル樹脂、アクリル樹脂、塩化ビニル樹脂、エポキシ樹脂、ウレタン樹脂、アクリルシリコン樹脂等を使用することができる。これらは、架橋反応性を有するものであってもよい。合成樹脂エマルションのTgは、通常−60〜30℃、好ましくは−50〜10℃である。
Such an undercoating material usually contains a synthetic resin emulsion as an essential component, and further contains a filler, various additives and the like as necessary. A main material of a multi-layer finish coating material defined in JIS A6909 can also be used as a primer for the present invention.
The kind of the synthetic resin emulsion in the primer is not particularly limited, and for example, vinyl acetate resin, acrylic resin, vinyl chloride resin, epoxy resin, urethane resin, acrylic silicon resin, and the like can be used. These may have crosslinking reactivity. The Tg of the synthetic resin emulsion is usually −60 to 30 ° C., preferably −50 to 10 ° C.
充填材としては、重質炭酸カルシウム、カオリン、けい藻土、ホワイトカーボン、クレー、タルク、バライト粉、沈降性硫酸バリウム、炭酸バリウム、珪砂、ウォラストナイト、マイカ等が使用できる。このような充填材を、顔料体積濃度が20〜70%(好ましくは25〜60%)となるように混合することによって、厚膜形の下塗材を得ることができ、種々の凹凸模様(砂壁状模様、スタッコ状模様、さざ波状模様、ゆず肌状模様、月面状模様等)を形成することが可能となる。また、このような厚膜形の下塗材は、基材の変位を緩和する効果も有する。 As the filler, heavy calcium carbonate, kaolin, diatomaceous earth, white carbon, clay, talc, barite powder, precipitated barium sulfate, barium carbonate, silica sand, wollastonite, mica and the like can be used. By mixing such a filler so that the pigment volume concentration is 20 to 70% (preferably 25 to 60%), a thick film type primer can be obtained, and various uneven patterns (sand walls) Pattern, stucco pattern, ripple pattern, yuzu skin pattern, lunar pattern, etc.) can be formed. In addition, such a thick film-type undercoat has an effect of reducing the displacement of the base material.
下塗材は、例えばスプレー、ローラー、刷毛、コテ等を用いて塗装することができる。塗装は数回に分けて行ってもよい。塗装時には水を用いて希釈することもできる。水の混合量は、使用する塗装器具、所望の塗面形状等に応じて適宜設定すればよい。
下塗材の塗付量は0.1〜3kg/m2程度(厚膜形の場合は0.5〜3kg/m2程度)である。
The undercoat material can be applied using, for example, a spray, a roller, a brush, a trowel, or the like. The painting may be performed in several times. It can also be diluted with water during painting. What is necessary is just to set the mixing amount of water suitably according to the coating instrument to be used, a desired coating surface shape, etc.
The coating amount of the primer is about 0.1 to 3 kg / m 2 (in the case of a thick film type, about 0.5 to 3 kg / m 2).
本発明組成物は、上述のような下塗材を塗付した後に塗付してもよいし、基材に対して直接塗付してもよい。本発明組成物の塗装においては、例えばスプレー、ローラー、刷毛等を用いることができる。塗装は数回に分けて行ってもよい。塗装時には水を用いて希釈することもできる。水の混合量は、塗装器具の種類、塗装下地の状態、塗装時の温度等を勘案して適宜設定すればよいが、通常0〜20重量%程度である。塗付量は、通常0.1〜0.5kg/m2程度である。また、本発明組成物の塗装工程及び乾燥工程は通常、常温で行えばよいが、加熱することも可能である。乾燥時間は、通常、常温で0.5〜4時間程度である。 The composition of the present invention may be applied after applying the primer as described above, or may be applied directly to the substrate. In painting the composition of the present invention, for example, a spray, a roller, a brush or the like can be used. The painting may be performed in several times. It can also be diluted with water during painting. The mixing amount of water may be appropriately set in consideration of the type of coating equipment, the state of the coating base, the temperature during coating, etc., but is usually about 0 to 20% by weight. The coating amount is usually about 0.1 to 0.5 kg / m2. Moreover, although the coating process and drying process of this invention composition should just normally be performed at normal temperature, it is also possible to heat. The drying time is usually about 0.5 to 4 hours at room temperature.
以下に実施例を示し、本発明の特徴をより明確にする。 Examples are given below to clarify the features of the present invention.
(塗料の製造)
表1に示す配合に従い、各原料を常法により混合・攪拌することによって塗料を製造した。原料としては下記のものを使用した。
(Manufacture of paint)
According to the formulation shown in Table 1, paints were produced by mixing and stirring the respective raw materials by a conventional method. The following were used as raw materials.
・樹脂:アクリル樹脂エマルション(メチルメタクリレート−スチレン−2−エチルヘキシルアクリレート−メタクリル酸共重合体、固形分50重量%、Tg−8℃)
・無機質粉体1:重質炭酸カルシウム(平均粒子径5μm、モース硬度3.0、吸油量28ml/100g、比重2.7)
・無機質粉体2:クレー(平均粒子径5μm、モース硬度1.5、吸油量32ml/100g、比重2.6)
・無機質粉体3:珪藻土(平均粒子径9μm、モース硬度1.0、吸油量170ml/100g、比重2.3)
・無機質粉体4:酸化チタン(平均粒子径0.2μm、モース硬度6.0、吸油量13ml/100g、比重3.9)
・中空粉体:アクリル樹脂中空ビーズ(平均粒子径8μm、Tg105℃、比重0.5)
・有機質粉体1:アクリルポリマー粉体(平均粒子径8μm、Tg20℃、比重1.0)
・有機質粉体2:コアシェル型アクリルポリマー粉体(平均粒子径8μm、コア部Tg−54℃、シェル部Tg105℃、比重1.0)
・有機質粉体3:アクリルポリマー粉体(平均粒子径8μm、Tg105℃、比重1.0)
・水分散型撥水剤:エポキシ基含有ジメチルシロキサン化合物の乳化分散体、固形分50重量%
・分散剤:ポリカルボン酸系分散剤(固形分30重量%)
・増粘剤:ヒドロキシエチルセルロース3重量%水溶液
・消泡剤:鉱物油系消泡剤
Resin: Acrylic resin emulsion (methyl methacrylate-styrene-2-ethylhexyl acrylate-methacrylic acid copolymer, solid content 50% by weight, Tg-8 ° C.)
Inorganic powder 1: heavy calcium carbonate (average particle diameter 5 μm, Mohs hardness 3.0, oil absorption 28 ml / 100 g, specific gravity 2.7)
Inorganic powder 2: clay (average particle size 5 μm, Mohs hardness 1.5, oil absorption 32 ml / 100 g, specific gravity 2.6)
Inorganic powder 3: diatomaceous earth (average particle diameter 9 μm, Mohs hardness 1.0, oil absorption 170 ml / 100 g, specific gravity 2.3)
Inorganic powder 4: Titanium oxide (average particle size 0.2 μm, Mohs hardness 6.0, oil absorption 13 ml / 100 g, specific gravity 3.9)
Hollow powder: Acrylic resin hollow beads (average particle size 8 μm, Tg 105 ° C., specific gravity 0.5)
Organic powder 1: acrylic polymer powder (average particle size 8 μm, Tg 20 ° C., specific gravity 1.0)
Organic powder 2: Core-shell type acrylic polymer powder (average particle size 8 μm, core portion Tg-54 ° C., shell portion Tg 105 ° C., specific gravity 1.0)
Organic powder 3: acrylic polymer powder (average particle size 8 μm, Tg 105 ° C., specific gravity 1.0)
Water dispersion type water repellent: Emulsified dispersion of epoxy group-containing dimethylsiloxane compound, solid content 50 wt%
・ Dispersant: Polycarboxylic acid-based dispersant (solid content: 30% by weight)
・ Thickener: Hydroxyethylcellulose 3% by weight aqueous solution ・ Defoamer: Mineral oil-based defoamer
(試験方法)
(1)鏡面光沢度
ガラス板(200×100×2mm)の片面に、すきま150μmのフィルムアプリケータを用いて各塗料を塗り、塗面を水平に置いて標準状態(温度23℃・相対湿度50%)で48時間乾燥して試験体を作製した。得られた試験体の鏡面光沢度(測定角度60度)を、JIS K5600−4−7:1999に規定される鏡面光沢度計にて測定した。評価基準は以下の通りである。
○:鏡面光沢度5未満
△:鏡面光沢度5以上10未満
×:鏡面光沢度10以上
(Test method)
(1) Specular Glossiness Each paint is applied to one side of a glass plate (200 × 100 × 2 mm) using a film applicator with a clearance of 150 μm, and the coated surface is placed horizontally and in a standard state (temperature 23 ° C., relative humidity 50 %) For 48 hours to prepare a test specimen. The specular gloss (measurement angle 60 degrees) of the obtained specimen was measured with a specular gloss meter specified in JIS K5600-4-7: 1999. The evaluation criteria are as follows.
○: Mirror glossiness less than 5 △: Mirror glossiness of 5 or more and less than 10 ×: Mirror glossiness of 10 or more
(2)耐湿潤冷熱繰返し性
予めシーラー処理を施したスレート板(150×70×3mm)に、JIS A6909:2003に規定される防水形合成樹脂エマルション系複層仕上塗材主材(顔料体積濃度50%、20℃時の伸び率300%)を、塗付量2kg/m2でスプレー塗装し、標準状態で24時間乾燥後、各塗料を塗付量0.3kg/m2でスプレー塗装して試験体を作製した。
標準状態で14日間養生後、作製した試験体をJIS K 5660 6.14に準じ、23℃の水中に18時間浸した後、直ちに−20℃に保った恒温槽にて3時間冷却し、次に50℃に保った別の恒温槽で3時間加温した。この操作を7回繰り返した後、標準状態に約1時間置いて、塗膜表面の状態を目視にて観察した(表1では「耐湿潤冷熱繰返し性A」と表記)。
また、23℃水中18時間、−20℃3時間、80℃3時間を1サイクルとした場合についても、上記と同様の方法で試験を行った(表1では「耐湿潤冷熱繰返し性B」と表記)。
評価基準は以下の通りである。
◎:割れ、剥れが全く発生しなかった。
○:割れ、剥れがほとんど発生しなかった。
△:割れ、剥れが部分的に発生した。
×:割れ、剥れが著しく発生した。
(2) Repeatability of wet / cold heat resistance Main material (pigment volume concentration) of a waterproof synthetic resin emulsion-based multi-layer finishing coating material defined in JIS A6909: 2003 on a slate plate (150 × 70 × 3 mm) that has been previously sealed. 50%, elongation rate at 20 ° C (300%) was spray-coated at a coating amount of 2 kg / m2, dried for 24 hours in a standard state, and then each paint was spray-coated at a coating amount of 0.3 kg / m2 for testing. The body was made.
After curing for 14 days in the standard state, the prepared specimen was immersed in 23 ° C. water for 18 hours in accordance with JIS K 5660 6.14, and then immediately cooled in a thermostatic bath maintained at −20 ° C. for 3 hours. The mixture was heated for 3 hours in another thermostat kept at 50 ° C. After repeating this operation seven times, the sample was placed in a standard state for about 1 hour, and the state of the coating film surface was visually observed (in Table 1, expressed as “wet and cold-heat repeatability A”).
In addition, the test was conducted in the same manner as described above for the case where one cycle was 23 ° C. water for 18 hours, −20 ° C. for 3 hours, and 80 ° C. for 3 hours (in Table 1, “wet and cold heat repeatability B”). Notation).
The evaluation criteria are as follows.
A: No cracking or peeling occurred.
○: Almost no cracking or peeling occurred.
Δ: Partial cracking and peeling occurred.
X: Cracking and peeling occurred remarkably.
(試験結果)
試験結果を表1に示す。実施例1〜7では、十分な艶消し塗膜が形成され、耐湿潤冷熱繰返し性試験においても良好な結果が得られた。
これに対し、比較例1〜3では、艶消し効果が不十分であった。比較例4〜6では、耐湿潤冷熱繰返し性試験において十分な結果が得られなかった。
(Test results)
The test results are shown in Table 1. In Examples 1 to 7, a sufficient matte coating film was formed, and good results were obtained even in a wet and cold repeatability test.
In contrast, in Comparative Examples 1 to 3, the matting effect was insufficient. In Comparative Examples 4 to 6, sufficient results were not obtained in the wet / cool repeatability test.
Claims (9)
平均粒子径が0.1〜100μmであり、ガラス転移温度−60〜60℃の重合体からなる有機質粉体(a)、及び/または
平均粒子径が0.1〜100μmであり、ガラス転移温度30℃未満の重合体からなるコア部とガラス転移温度30℃以上の重合体からなるシェル部を有する有機質粉体(b)
が(II)成分全体に対し5体積%以上含まれることを特徴とする水性塗料組成物。 An aqueous coating composition having a pigment volume concentration of 20 to 80% comprising a synthetic resin emulsion (I) having a glass transition temperature of −60 to 30 ° C. and a pigment (II), wherein the pigment (II) is:
Organic powder (a) made of a polymer having an average particle diameter of 0.1 to 100 μm and a glass transition temperature of −60 to 60 ° C. and / or an average particle diameter of 0.1 to 100 μm and a glass transition temperature Organic powder (b) having a core part made of a polymer of less than 30 ° C and a shell part made of a polymer having a glass transition temperature of 30 ° C or higher
Is contained in an amount of 5% by volume or more based on the total component (II).
平均粒子径が0.1〜100μmである無機質粉体(c)、
平均粒子径が0.1〜100μmである有機質粉体(ガラス転移温度60℃以下の重合体を有するものを除く)(d)、
平均粒子径が0.1〜100μmである中空粉体(e)、
から選ばれる少なくとも1種以上を、
前記(a)成分及び/または(b)成分の合計量に対し、95:5〜5:95の体積比率で含むことを特徴とする請求項1記載の水性塗料組成物。 As the pigment (II),
Inorganic powder (c) having an average particle size of 0.1 to 100 μm,
Organic powder having an average particle diameter of 0.1 to 100 μm (excluding those having a polymer having a glass transition temperature of 60 ° C. or lower) (d),
Hollow powder (e) having an average particle diameter of 0.1 to 100 μm,
At least one selected from
The water-based coating composition according to claim 1, wherein the composition is contained in a volume ratio of 95: 5 to 5:95 with respect to the total amount of the component (a) and / or the component (b).
平均粒子径が0.1〜100μmであり、モース硬度が7以下である無機質粉体(c−1)を、前記(a)成分及び/または(b)成分の合計量に対し、95:5〜5:95の体積比率で含むことを特徴とする請求項1記載の水性塗料組成物。 As the pigment (II),
The inorganic powder (c-1) having an average particle diameter of 0.1 to 100 μm and a Mohs hardness of 7 or less is 95: 5 with respect to the total amount of the component (a) and / or the component (b). The water-based coating composition according to claim 1, comprising a volume ratio of ˜5: 95.
Priority Applications (1)
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JP2005324187A (en) * | 2004-04-15 | 2005-11-24 | Sk Kaken Co Ltd | Coating method |
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