JP3445739B2 - Construction method of aqueous coating composition for floor coating - Google Patents

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、床に模様や色彩を
付与する床被覆用の水性塗料組成物の施工方法に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for applying an aqueous coating composition for floor coating, which imparts a pattern or color to a floor.

【０００２】[0002]

【従来技術】従来、コンクリート、アスファルト等の無
味乾燥な床面に、色彩や模様を付与して美観を向上させ
る手法が行われている。2. Description of the Related Art Conventionally, there has been used a method of imparting a color or a pattern to a tasteless dry floor surface such as concrete or asphalt to improve the aesthetic appearance.

【０００３】このような目的のために使用される材料と
しては、一般にポリウレタン系、エポキシ樹脂系、不飽
和ポリエステル系、メチルメタクリレートオリゴマー系
等の各種の床被覆用塗料組成物が用いられている。As materials used for such purposes, various types of floor coating compositions such as polyurethane, epoxy resin, unsaturated polyester, methyl methacrylate oligomer, etc. are generally used.

【０００４】例えば、ポリウレタン系塗り床材として
は、主剤にトリレンジイソシアネート等のポリイソシア
ネート化合物を、硬化剤としてポリエーテルポリオール
等のポリオール類を使用し、これに促進剤、充填材、顔
料、可塑剤、粘度低減剤などを配合、混練したものであ
る。For example, as a polyurethane-based floor coating material, a polyisocyanate compound such as tolylene diisocyanate is used as a main component, and a polyol such as a polyether polyol is used as a curing agent, and an accelerator, a filler, a pigment and a plasticizer are used. An agent, a viscosity reducing agent, etc. are mixed and kneaded.

【０００５】また、エポキシ樹脂系塗り床材としては、
ビスフェノールＡ型またはビスフェノールＦ型エポキシ
樹脂等を主成分とする主剤部と、ポリアミン系化合物を
主成分とする硬化剤部からなる二液形のエポキシ樹脂結
合材に促進剤、充填材やその他の材料を添加調合したも
のである。Further, as an epoxy resin type floor coating material,
A two-component epoxy resin binder consisting of a main agent part containing bisphenol A type or bisphenol F type epoxy resin as a main component and a curing agent part containing a polyamine compound as a main component, an accelerator, a filler and other materials. Is added and mixed.

【０００６】つぎに、不飽和ポリエステル系塗り床材と
しては、多塩基酸と多価アルコールを反応させてつくっ
た不飽和ポリエステルを、これと重合する単量体に溶解
した樹脂を主成分とする不飽和ポリエステル樹脂を主剤
とし、過酸化物を主体とする硬化剤と金属触媒を主成分
とする促進剤の組み合わせによる結合材に、充填材やそ
の他の材料を添加調合したものである。特に不飽和ポリ
エステル系塗り床材では、その硬化機構が酸化還元によ
るラジカル形成とその重合開始によるものであるところ
から、ラジカル生成を阻害する大気中の酸素の存在は、
硬化不良の原因となる。従って、さらにパラフィンワッ
クスを混入して、塗装直後の塗膜と大気との接触を回避
する遮蔽剤としている。Next, as the unsaturated polyester-based floor coating material, an unsaturated polyester prepared by reacting a polybasic acid with a polyhydric alcohol is mainly composed of a resin dissolved in a monomer to be polymerized with the unsaturated polyester. A filler and other materials are added and blended to a binder made of a combination of an unsaturated polyester resin as a main component, a curing agent having a peroxide as a main component, and an accelerator having a metal catalyst as a main component. Particularly in unsaturated polyester floor coatings, the curing mechanism is due to radical formation by redox and initiation of polymerization thereof, so that the presence of oxygen in the atmosphere that inhibits radical generation is
It may cause curing failure. Therefore, paraffin wax is further mixed to provide a shielding agent for avoiding contact between the coating film immediately after coating and the atmosphere.

【０００７】つぎに、メチルメタクリレートオリゴマー
系塗り床材は、硬化機構的には不飽和ポリエステル系塗
り床材と同様であるが、反応性が非常に高く硬化剤とし
て過酸化物のみを用いて（金属触媒を使用しない）硬化
させる。また、硬化機構が同様のため、同様にパラフィ
ンワックスを混入して、塗装直後の塗膜と大気との接触
を回避している。Next, the methylmethacrylate oligomer-based floor coating is similar to the unsaturated polyester-based floor coating in terms of curing mechanism, but has very high reactivity, and only peroxide is used as a curing agent ( Cure (without metal catalyst). Further, since the curing mechanism is the same, paraffin wax is similarly mixed to avoid contact between the coating film immediately after coating and the atmosphere.

【０００８】これらの各塗り床材のうちポリウレタン系
及びエポキシ樹脂系については、有機溶剤を含有するも
のであるため、有機溶剤の揮発やそれに伴う臭気等の環
境保全の観点からその使用が問題視されてきている。ま
た、不飽和ポリエステル系やメチルメタクリレートオリ
ゴマー系は、それぞれ溶媒となるスチレンモノマー、メ
チルメタクリレートモノマー等の揮発やそれに伴う臭
気、さらに混入するパラフィンワックスが表面の耐汚染
性を低下させる点などのデメリットがある。Among these floor coating materials, polyurethane-based and epoxy-resin-based materials contain organic solvents, and therefore their use is problematic from the viewpoint of environmental protection such as volatilization of organic solvents and accompanying odor. Has been done. In addition, unsaturated polyester type and methyl methacrylate oligomer type have disadvantages such as volatilization of styrene monomer and methyl methacrylate monomer which are solvents and odors accompanying them, and paraffin wax mixed in lowers the surface stain resistance. is there.

【０００９】さらに、ポリウレタン系は主剤と硬化剤と
の混合により、主剤末端のイソシアネート基が硬化剤と
化学反応して、より大きな分子量となるとともに、分子
内にて三次元構造を形成して強固な結合を生じる。した
がって、主剤と硬化剤の混合比率を最適にしておかなけ
れば、形成された塗膜の物性が大きな変化を招き、当初
の品質を発揮できなくなる。つまり、主剤と硬化剤の比
率に非常に注意を要するとの手間がかかる。Further, in the polyurethane type, when the main agent and the curing agent are mixed, the isocyanate group at the end of the main agent chemically reacts with the curing agent to have a larger molecular weight, and a three-dimensional structure is formed in the molecule to form a strong structure. Result in a strong bond. Therefore, if the mixing ratio of the main agent and the curing agent is not optimized, the physical properties of the formed coating film will change significantly and the initial quality cannot be exhibited. In other words, it takes time and effort to pay close attention to the ratio of the main agent and the curing agent.

【００１０】エポキシ樹脂系も同様に主剤と硬化剤との
化学反応により、三次元構造を形成して強固な塗膜を形
成するため、主剤と硬化剤の比率に非常に注意を要する
との手間がかかる。さらに、エポキシ樹脂の硬化反応は
発熱反応の為、環境温度が非常に高いと可使時間が著し
く短くなったり、環境温度が非常に低い場合には塗膜が
硬化しないばかりか、塗り床材の粘度が非常に高くな
り、作業性が著しく損なわれる。Similarly, in the epoxy resin system, a chemical reaction between the main agent and the curing agent forms a three-dimensional structure to form a strong coating film, so that the ratio of the main agent and the curing agent requires great care. Takes. Furthermore, the curing reaction of the epoxy resin is an exothermic reaction, so when the ambient temperature is extremely high, the pot life becomes extremely short, and when the ambient temperature is very low, the coating film does not cure, and the flooring material The viscosity becomes so high that workability is significantly impaired.

【００１１】不飽和ポリエステル系、メチルメタクリレ
ートオリゴマー系は、その硬化反応が、酸化・還元によ
るラジカル生成とその重合開始機構を利用したものであ
るため、硬化に際して、ラジカル生成を阻害する物質、
例えば抗酸化性物質の混入を避けなければならない。ま
た、硬化剤や促進剤の添加量が非常に少量のため、それ
ぞれ精秤して、主剤との十分な混合が必要とされる。さ
らに、環境温度が高くなるほど硬化が早くなる傾向があ
るため、使用時の気温などに応じて硬化剤等の添加量の
増減が必要となる。Since the unsaturated polyester type and methyl methacrylate oligomer type curing reactions utilize radical generation by oxidation / reduction and its polymerization initiation mechanism, a substance that inhibits radical generation during curing,
For example, the inclusion of antioxidants must be avoided. Further, since the curing agent and the accelerator are added in a very small amount, they must be precisely weighed and sufficiently mixed with the main agent. Further, the higher the environmental temperature is, the faster the curing tends to be. Therefore, it is necessary to increase or decrease the addition amount of the curing agent or the like according to the temperature during use.

【００１２】このような点から最近は、配合比率への注
意の必要性や環境の影響を受けやすい主剤、硬化剤の反
応によらず、有害な揮発性有機化合物を多量に含有しな
い合成樹脂エマルションを、その塗膜形成主要素とする
水性系の塗り床材をその部位によって使用するようにな
ってきた。From these points, recently, a synthetic resin emulsion which does not contain a large amount of harmful volatile organic compounds irrespective of the necessity of paying attention to the compounding ratio and the reaction of the main agent and the curing agent which are easily influenced by the environment. A water-based coating flooring material, which is the main element for forming a coating film, has been used depending on the site.

【００１３】一方、コンクリート、アスファルト等の床
面に型が打ち抜かれた型紙シートや目地棒と塗材を組み
合わせて、模様や色彩からなる意匠を付与することも行
われている。このような型紙工法において使用される材
料も前述と同様の理由により、水性系の塗り床材が使用
されるようになってきた。On the other hand, it is also practiced to give a design consisting of a pattern and a color by combining a pattern paper sheet or a joint bar with a die stamped on the floor surface of concrete, asphalt or the like and a coating material. As a material used in such a paper pattern construction method, an aqueous floor coating material has come to be used for the same reason as described above.

【００１４】例えば、特開平４−１４５０３号には、路
面または床面に着色顔料を含有する下塗り材を塗布した
後、裏面に粘着剤層を有し直線状や曲線状等に作製され
た合成樹脂片を複数上記下塗り材表面の所望箇所に貼着
して模様型となし、下塗り材表面にこの下塗り材と異色
の着色顔料を含有する上塗り材を塗布して乾燥硬化させ
た後、上記合成樹脂型片を剥がして上塗り材と型片剥離
部分の下塗り材により、凹凸模様を形成するようにした
カラー化粧舗装工法が記載されている。For example, in Japanese Unexamined Patent Publication (Kokai) No. 4-14503, a synthetic material prepared by applying an undercoating material containing a color pigment on a road surface or a floor surface and then forming a linear or curved shape having an adhesive layer on the back surface. A plurality of resin pieces are adhered to desired positions on the surface of the undercoating material to form a pattern, and the topcoating material containing the undercoating material and a color pigment of a different color is applied to the surface of the undercoating material and dried and cured, then the above-mentioned synthesis A color decorative pavement construction method is described in which a resin mold piece is peeled off and an uneven pattern is formed by an overcoat material and an undercoat material of a mold piece peeling portion.

【００１５】[0015]

【発明が解決しようとする課題】一般にコンクリートや
アスファルト等の床面に塗付する塗り床材においては、
主として下地への追従性と耐摩耗性の両方の性能が要求
される。このことは合成樹脂エマルションを塗膜結合材
とする、水性系の塗り床材においても同様である。しか
しながら、従来の水性系の塗り床材において、特に柔ら
かいアスファルト下地面において、数ｍｍ程度の塗膜厚
において、この両方の性能を具備することは困難であっ
た。すなわち、下地への追従性を重視するものは、必然
的に形成される塗膜を柔らかいものにせざるを得ず、結
果として耐摩耗性に劣り、表面の摩耗や汚染が大きくな
り、逆に耐摩耗性を重視するものは、必然的に形成され
る塗膜を硬いものにせざるを得ず、結果として下地追従
性に劣り、割れを生じることになっていた。本発明の解
決課題の第一は、このような下地への追従性と耐摩耗性
の両方の性能を具備する水性系の塗り床材の被覆方法を
見出すことである。Generally, in the case of a coated floor material to be coated on the floor surface of concrete, asphalt, etc.,
Mainly, it is required to have both the ability to follow the base and the wear resistance. This also applies to an aqueous floor coating material using a synthetic resin emulsion as a coating material. However, it has been difficult for a conventional water-based floor coating material, particularly on a soft asphalt base surface, to have both of these performances at a coating thickness of several mm. In other words, those that place importance on the ability to follow the substrate must inevitably make the coating film that is formed soft, resulting in poor wear resistance, large surface wear and contamination, and conversely resistance. Those that attach importance to the wearability are inevitably forced to make the formed coating film hard, and as a result, the followability to the base is poor and cracks are generated. The first problem to be solved by the present invention is to find a method for coating an aqueous floor coating material which has both the ability to follow the underlayer and the abrasion resistance.

【００１６】次に、水性系の塗り床材では、数mm程度の
厚塗りをした場合において、溶媒である水分の蒸発によ
る乾燥収縮（肉痩せ）が大きく、乾燥塗膜に割れが発生
する場合があった。また、低温時には水分の蒸発が遅く
なる結果、塗膜の乾燥に時間がかかり養生時間を非常に
要するという問題があった。本発明の解決課題の第二
は、水性系の塗り床材において、乾燥収縮が非常に小さ
くでき、低温時における塗膜乾燥に要する時間を短縮す
る水性系の塗り床材の被覆方法を見出すことである。Next, in the case of a water-based floor coating material, when a thick coating of about several mm is applied, drying shrinkage (thinness) due to evaporation of water as a solvent is large and cracks occur in the dried coating film. was there. In addition, as a result of slow evaporation of water at low temperatures, there is a problem that it takes a long time to dry the coating film and a very long curing time is required. The second of the problems to be solved by the present invention is to find a coating method for an aqueous floor coating material, which can reduce the drying shrinkage very much in the aqueous floor coating material and shorten the time required for drying the coating film at a low temperature. Is.

【００１７】一方、先述のように塗り床材において、各
種の型を打ち抜いた型紙シートや目地棒を組み合わせ
て、意匠性に優れた模様を形成する方法は、床の美観向
上の点から非常に要望されている。しかしながら、一般
に床面はそれ自身が不陸等による凹凸があったり、傾斜
していたり、また、既存の塗り床材が残存していたりす
るため、まずそれらを平滑面に調整しなければ、型紙シ
ートや目地棒を貼り付けることができない。また、平滑
面の精度が高くないと、型紙シートや目地と平滑面との
間に隙間を生じ、続く凹凸形成材料を塗付した場合に、
隙間への滲み込みが生じ、凹凸模様の境界が不明瞭なも
のとなってしまう。このような下地の平滑化のために、
セメント系の下地調整材を用いる場合があるが、セメン
ト系下地調整材塗膜面に、型枠シートを用いて塗り床材
にて模様形成した場合には、その目地部分はセメント系
下地調整材が現れることになり、降雨による水分の影響
で目地部分からセメント系特有のエフロレッセンスを生
じることがあった。On the other hand, as described above, a method of forming a pattern having excellent designability by combining a pattern sheet punched with various molds and a joint bar in a coated flooring material is very effective from the viewpoint of improving the aesthetic appearance of the floor. Is requested. However, in general, the floor surface itself has irregularities due to unevenness, is inclined, and existing coating floor material remains, so if they are not adjusted to a smooth surface first, the pattern paper Sheets and joint bars cannot be attached. Also, if the accuracy of the smooth surface is not high, a gap is created between the pattern paper sheet or joint and the smooth surface, and when a subsequent unevenness forming material is applied,
Permeation into the gap occurs, and the boundary of the uneven pattern becomes unclear. In order to smooth such a base,
Cement-based base conditioner may be used, but when a pattern is formed on the coated surface of the cement-based base conditioner using a form sheet, the joints are cement-based base conditioner. And the efflorescence peculiar to cement was sometimes generated from the joints due to the influence of water content due to rainfall.

【００１８】したがって、本発明の解決課題の第三は、
水性系の塗り床材において、下地の不陸や凹凸を調整
し、平滑面を形成できると共に、塗付面への実用上十分
な密着性を有し、形成された平滑面の精度が高く、型紙
シートや目地棒を貼り付けて、凹凸模様形成材料を塗付
した場合、隙間への滲み込みが生じず、凹凸模様の境界
を明瞭なものとする水性系の塗り床材の被覆方法を見出
すことである。さらに本発明においては、塗り床材とし
ての基本性能であるノンスリップ効果においても当然優
れた性能を有していることが必要である。Therefore, the third problem to be solved by the present invention is:
In a water-based coating floor material, it is possible to adjust the unevenness and unevenness of the base to form a smooth surface, and to have practically sufficient adhesion to the coating surface, and the accuracy of the formed smooth surface is high, When a pattern paper sheet or joint bar is pasted and an uneven pattern forming material is applied, a method of coating an aqueous floor covering that makes the boundaries of the uneven pattern clear without causing bleeding into the gap is found. That is. Further, in the present invention, it is naturally necessary that the non-slip effect, which is the basic performance of the floor coating material, also has excellent performance.

【００１９】[0019]

【課題を解決するための手段】このような課題を解決す
るために、本発明者らは水性塗り床材を下塗りと上塗り
に分離し、その配合の微妙に異なる水性塗り床材二層塗
りを行うことに想到し本発明を完成した。In order to solve such a problem, the present inventors separated an aqueous coating floor material into an undercoat and a top coating, and applied a two-layer coating of the aqueous coating floor material having a slightly different composition. The present invention was completed with the idea of carrying out.

【００２０】すなわち、本発明は以下のI．〜III．の各
々を包括するものである。 I．アスファルトに対し、 １．ａ．ガラス転移温度（以下、「Ｔｇ」という。）が
−２０〜１０℃の合成樹脂エマルションの固形分１００
重量部に対して、ｃ．繊維長５〜３０μｍ、繊維径０．
０５〜１μｍの無機質繊維を５〜１０重量部、ｄ．粒径
が４５〜２５０μｍの無機質粉体を１００〜２００重量
部含有し、顔料容積濃度（以下、「ＰＶＣ」という。）
が３０〜５０％の水性塗料組成物Ａを第一層としてして
膜厚０．５〜１０ｍｍとなるように塗装し、 ２．第一層が乾燥後に、続いてその表面に、ｂ．Ｔｇが
０〜２０℃の架橋形合成樹脂エマルションの固形分１０
０重量部に対して、ｃ．繊維長５〜３０μｍ、繊維径
０．０５〜１μｍの無機質繊維を５〜１０重量部、ｅ．
粒径が０．５〜４５μｍのものと４５〜１０００μｍの
ものを重量比率１：５〜１：１５で混合した無機質粉粒
体を１５０〜３００重量部含有し、ＰＶＣが４０〜６０
％の水性塗料組成物Ｂを第二層として膜厚０．１〜３ｍ
ｍとなるように塗装することを特徴とする床被覆用水性
塗料組成物の施工方法。That is, the present invention provides the following I. ~ III. Each of
It is a comprehensive one. I.For asphalt, 1. a. Glass transition temperature (hereinafter referred to as "Tg")
Solid content of synthetic resin emulsion at −20 to 10 ° C. 100
With respect to parts by weight, c. Fiber length 5 to 30 μm, fiber diameter 0.
5 to 10 parts by weight of an inorganic fiber of 05 to 1 μm, d. Particle size
100-200 weight of inorganic powder of 45-250 μm
Part, and the pigment volume concentration (hereinafter referred to as "PVC").
Is 30 to 50% of the aqueous coating composition A as the first layer
Coating to a film thickness of 0.5-10 mm, 2. After the first layer has dried, then on its surface, b. Tg
Solid content of crosslinked synthetic resin emulsion at 0 to 20 ° C. 10
0 parts by weight, c. Fiber length 5 to 30 μm, fiber diameter
5 to 10 parts by weight of 0.05 to 1 μm inorganic fiber, e.
Particle size of 0.5-45 μm and 45-1000 μm
Inorganic powder granules that are mixed in a weight ratio of 1: 5 to 1:15
Containing 150-300 parts by weight of body, PVC 40-60
% Aqueous coating composition B as a second layer having a film thickness of 0.1 to 3 m
Water-based floor coating, characterized by being painted to m
A method for applying a coating composition.

【００２１】[0021]

【００２２】II．無機質繊維がセピオライトであること
を特徴とするI．に記載の床被覆用水性塗料組成物の施
工方法。 II . I. characterized in that the inorganic fiber is sepiolite A method for applying the floor coating aqueous coating composition according to.

【００２３】III．水性塗料組成物Ａを塗装し、塗膜が
乾燥した後に型材を貼り、その後、水性塗料組成物Ｂを
塗装し、塗装直後又は塗膜が乾燥した後に型材を除去す
ることを特徴とするI．又はII．に記載の床被覆用水性
塗料組成物の施工方法。 III . 1. Coating the water-based coating composition A, applying the mold material after the coating film is dried, and then coating the water-based coating composition B, and removing the mold material immediately after coating or after the coating film is dried. Or II. A method for applying the floor coating aqueous coating composition according to.

【００２４】[0024]

【発明の実施の形態】本発明の水性塗料組成物Ａで使用
する合成樹脂エマルションは、Ｔｇが−２０〜１０℃で
あれば特に限定されるものではなく、製造方法も通常の
合成樹脂エマルションの重合方法によるものである。BEST MODE FOR CARRYING OUT THE INVENTION The synthetic resin emulsion used in the aqueous coating composition A of the present invention is not particularly limited as long as it has a Tg of −20 to 10 ° C. It depends on the polymerization method.

【００２５】この際に使用される重合性モノマーとして
は、メチルアクリレート、エチルアクリレート、イソプ
ロピルアクリレート、２−エチルヘキシルアクリレー
ト、ｎ−ブチルアクリレート等のアクリル系モノマー、
メチルメタクリレート、エチルメタクリレート、イソプ
ロピルメタクリレート、ｎ−ブチルメタクリレート、イ
ソブチルメタクリレート、ｎ−ヘキシルメタクリレー
ト、ラウリルメタクリレート等のメタクリル系モノマ
ー、スチレン、ビニルトルエン、酢酸ビニル等からＴｇ
が前述の範囲になるように適宜選択して使用することが
できる。但し、Ｔｇや耐久性を考慮した場合には、アク
リル系モノマーとスチレンモノマーとの共重合エマルシ
ョンが好ましい。As the polymerizable monomer used at this time, acrylic monomers such as methyl acrylate, ethyl acrylate, isopropyl acrylate, 2-ethylhexyl acrylate, and n-butyl acrylate,
Tg from methacrylic monomers such as methyl methacrylate, ethyl methacrylate, isopropyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, n-hexyl methacrylate, lauryl methacrylate, styrene, vinyltoluene, vinyl acetate, etc.
Can be appropriately selected and used so that is within the above range. However, in consideration of Tg and durability, a copolymer emulsion of an acrylic monomer and a styrene monomer is preferable.

【００２６】本発明の水性塗料組成物Ａで使用する合成
樹脂エマルションとは、架橋反応を生じる官能基モノマ
ーの組み合わせを含有する、又は含有しないものである
が、このような官能基モノマーとは、グリシジル基とカ
ルボキシル基、ヒドラジド基とカルボニル基、エポキシ
基とアミノ基、ヒドロキシル基とカルボキシル基、自己
縮合する３級アミン−エピクロルヒドリンアダクト、弱
反応性イソシアネートとアミノ基、カルボキシル基とア
ジリジン基、自己縮合するアルコキシシリル基、カルボ
キシル基とカルボジイミド基、アセトアセテート基とケ
チミン基、α位にヘテロ原子を有するエステル基とアミ
ノ基等の組み合わせがあげられる。更に、各々の組み合
せのうち一方のみを含有して、他の重合性モノマーと架
橋反応を生じない場合も含む。The synthetic resin emulsion used in the aqueous coating composition A of the present invention contains or does not contain a combination of functional group monomers which cause a cross-linking reaction. Glycidyl group and carboxyl group, hydrazide group and carbonyl group, epoxy group and amino group, hydroxyl group and carboxyl group, self-condensing tertiary amine-epichlorohydrin adduct, weakly reactive isocyanate and amino group, carboxyl group and aziridine group, self-condensing And a combination of an alkoxysilyl group, a carboxyl group and a carbodiimide group, an acetoacetate group and a ketimine group, an ester group having a hetero atom at the α-position, and an amino group. Further, it also includes a case where only one of the respective combinations is contained and a crosslinking reaction with other polymerizable monomers does not occur.

【００２７】次に水性塗料組成物Ｂで使用する合成樹脂
エマルションとしては、架橋形であり、Ｔｇが０〜２０
℃のものであれば特に限定されるものではない。重合性
モノマーとしては、前述の水性塗料組成物Ａの合成樹脂
エマルションと同様のものに加えて、架橋反応を生じる
官能基モノマーの組み合せの何れかを含有することが必
要である。Next, the synthetic resin emulsion used in the aqueous coating composition B is a crosslinked type and has a Tg of 0 to 20.
There is no particular limitation as long as it is at a temperature of ° C. As the polymerizable monomer, in addition to the same as the synthetic resin emulsion of the water-based coating composition A described above, it is necessary to contain any combination of functional group monomers that cause a crosslinking reaction.

【００２８】本発明では、水性塗料組成物Ａとして、前
述の非架橋形合成樹脂エマルションを使用して、その顔
料容積濃度（以下、「ＰＶＣ」という。）を３０〜５０
％に調整して第一層として塗装し、水性塗料組成物Ｂと
して、前述の架橋形合成樹脂エマルションを使用して、
そのＰＶＣを４０〜６０％に調整して第二層として、第
一層乾燥後にその表面に塗装する。これにより、比較的
柔らかいアスファルトのような下地面においても、第一
層がこれに追従し、表面の耐摩耗性については第二層が
形成する強固な塗膜により十分なものとなる。In the present invention, the above-mentioned non-crosslinked synthetic resin emulsion is used as the aqueous coating composition A, and its pigment volume concentration (hereinafter referred to as "PVC") is 30 to 50.
% And coated as the first layer, and using the above-mentioned cross-linked synthetic resin emulsion as the aqueous coating composition B,
The PVC is adjusted to 40 to 60% to form a second layer, and the first layer is dried and then coated on the surface. As a result, even on a relatively soft asphalt-like base surface, the first layer follows this, and the abrasion resistance of the surface is sufficient with the strong coating film formed by the second layer.

【００２９】ａ．の合成樹脂エマルションのＴｇが−２
０℃より低い場合は、第一層の塗膜が軟らかすぎて、第
二層が追従できない。また、合成樹脂エマルションのＴ
ｇが１０℃より高い場合は、床面がアスファルトのよう
な高弾性下地の場合に追従できず、経時でクラックを生
じる可能性がある。一方、架橋形合成樹脂エマルション
のＴｇが０℃より低い場合は、第二層の耐摩耗性が不十
分となり、２０℃より高い場合は塗膜が硬すぎて、第二
層の耐衝撃性が不十分となる。また、水性塗料組成物Ａ
のＰＶＣが３０％より低い場合は、水性塗料組成物Ａ中
において、相対的にエマルションの方が多くなり、結果
として水分が多くなるため、低温での乾燥性及び内部強
度が低下する。逆に５０％より高い場合は、相対的にエ
マルション量が少なくなり、下地への応力緩和性が低下
する。水性塗料組成物ＢのＰＶＣが４０％より低い場合
は、相対的にエマルションの方が多くなり、結果として
水分が多くなるため低温での乾燥性及び内部強度が低下
すると共に、ノンスリップ性も低下する。逆に６０％よ
り高い場合は、相対的にエマルション量が少なくなり、
塗膜が脆くなるため、耐摩耗性、付着強度、応力緩和性
が低下する。A. Tg of synthetic resin emulsion of -2
When the temperature is lower than 0 ° C, the coating film of the first layer is too soft and the second layer cannot follow. In addition, T of synthetic resin emulsion
When g is higher than 10 ° C., the floor surface cannot follow the case of a highly elastic substrate such as asphalt, and cracks may occur over time. On the other hand, when the Tg of the crosslinked synthetic resin emulsion is lower than 0 ° C, the abrasion resistance of the second layer is insufficient, and when it is higher than 20 ° C, the coating film is too hard and the impact resistance of the second layer is low. Will be insufficient. In addition, the aqueous coating composition A
When the PVC is less than 30%, the amount of the emulsion in the aqueous coating composition A is relatively large, and as a result, the water content is large, so that the drying property at low temperature and the internal strength are lowered. On the other hand, when it is higher than 50%, the amount of emulsion becomes relatively small and the stress relaxation property to the base is lowered. When the PVC of the water-based coating composition B is lower than 40%, the amount of emulsion is relatively large, and as a result, the amount of water is large, so that the drying property at low temperature and the internal strength are reduced, and the non-slip property is also reduced. . On the contrary, when it is higher than 60%, the amount of emulsion becomes relatively small,
Since the coating film becomes brittle, wear resistance, adhesive strength, and stress relaxation property decrease.

【００３０】本発明においては、前述のI．に示したよ
うに、水性塗料組成物Ａがｃ．繊維長５〜３０μｍ、繊
維径０．０５〜１μｍの無機質繊維、ｄ．粒径が４５〜
２５０μｍの無機質粉体を含有し、水性塗料組成物Ｂが
ｃ．繊維長５〜３０μｍ、繊維径０．０５〜１μｍの無
機質繊維、ｅ．粒径が０．５〜４５μｍのものと４５〜
１０００μｍのものを混合した無機質粉粒体を含有する
場合に、本発明の第二の解決課題である、水性系の塗り
床材における乾燥収縮の問題を非常に小さくでき、低温
時における初期の内部強度を発現させる時間を短縮する
ことができる。In the present invention, the above-mentioned I. As shown in FIG. Inorganic fibers having a fiber length of 5 to 30 μm and a fiber diameter of 0.05 to 1 μm, d. Particle size is 45 ~
Aqueous coating composition B containing 250 μm of inorganic powder c. An inorganic fiber having a fiber length of 5 to 30 μm and a fiber diameter of 0.05 to 1 μm, e. Particle size of 0.5-45 μm and 45-
In the case of containing an inorganic powdery material mixed with a material having a particle size of 1000 μm, the problem of drying shrinkage in a water-based floor coating material, which is the second problem to be solved by the present invention, can be made very small, and the initial interior at low temperature The time for developing strength can be shortened.

【００３１】これは、前述のような無機質繊維と無機質
粉体又は無機質粉粒体を含有することにより、塗膜の乾
燥収縮に対する緩衝効果が生じるとともに、水分の蒸発
が促進され、さらに塗膜内部強度を向上させるものであ
る。さらに、乾燥収縮が非常に少なく、内部強度が向上
しているため、第二層の架橋形合成樹脂エマルションを
使用した水性塗料組成物Ｂの塗装を、第一層が完全に乾
燥する以前、すなわち指触乾燥程度の状態において行な
うことができる。特にこの場合は、第二層が架橋形合成
樹脂エマルションを含有する水性塗料組成物のため、硬
化が非常に早いことともあいまって、時間短縮に非常な
効果が得られる施工方法である。By containing the above-mentioned inorganic fibers and the inorganic powder or the inorganic powder or granules, a buffering effect against the drying shrinkage of the coating film is produced, the evaporation of water is promoted, and the inside of the coating film is further promoted. It is intended to improve the strength. Furthermore, since the drying shrinkage is very small and the internal strength is improved, the coating of the aqueous coating composition B using the crosslinked synthetic resin emulsion of the second layer is performed before the first layer is completely dried, that is, It can be performed in a state of being dry to the touch. In particular, in this case, since the second layer is an aqueous coating composition containing a cross-linked synthetic resin emulsion, curing is very fast, which is a very effective method for shortening the time.

【００３２】このような無機質繊維としては、繊維長５
〜３０μｍ、繊維径０．０５〜１μｍの無機質繊維であ
れば特に限定されるものではないが、セピオライト、ウ
ォラストナイト、ガラス繊維等があげられる。Such an inorganic fiber has a fiber length of 5
Although it is not particularly limited as long as it is an inorganic fiber having a particle diameter of ˜30 μm and a fiber diameter of 0.05 to 1 μm, examples thereof include sepiolite, wollastonite, glass fiber and the like.

【００３３】これらの中でも特にセピオライトは、乾燥
収縮に対する効果が大きいため好ましい。このようなセ
ピオライトは、原鉱石をボールミルやローラーミル等の
乾式粉砕手段によって細粉化して、塗料中に配合分散で
きるようにしたものが一般に使用される。Of these, sepiolite is particularly preferable because it has a great effect on drying shrinkage. Such sepiolite is generally used by finely pulverizing raw ore by a dry pulverizing means such as a ball mill or a roller mill so that it can be blended and dispersed in a paint.

【００３４】また場合によっては、特開昭５６−１１８
７５１号公報に記載のように、原鉱石の５０〜１５０％
に相当する水の存在下にて解砕処理することにより形成
される、針状結晶や繊維状結晶組織が破壊されていない
ものが、揺変性の喪失の程度が低い為、より望ましい。Further, in some cases, JP-A-56-118
As disclosed in Japanese Patent No. 751 publication , 50 to 150% of the original ore
It is more preferable that the acicular crystals and the fibrous crystal structure formed by crushing in the presence of water corresponding to (3) do not destroy the thixotropic loss.

【００３５】無機質繊維の繊維長が５μｍより短い場合
は、乾燥収縮の緩和が不十分となり、３０μｍより長い
場合は、塗料中に分散しづらく、繊維の凝集物微粒子を
生じ、形成された塗膜表面が微細な凹凸状となってしま
う。また、無機質繊維の繊維径が０．０５μｍより小さ
い場合は、無機質繊維自体の強度がなく、塗膜形成時の
内部強度が低下する。１μｍより大きい場合は、塗料の
粘性が劣る。When the fiber length of the inorganic fiber is shorter than 5 μm, the relaxation of the drying shrinkage is insufficient, and when it is longer than 30 μm, it is difficult to disperse in the coating material, and fine particles of aggregates of the fiber are formed to form the coating film formed. The surface becomes fine irregularities. When the fiber diameter of the inorganic fiber is smaller than 0.05 μm, the strength of the inorganic fiber itself does not exist and the internal strength at the time of forming the coating film decreases. If it is larger than 1 μm, the viscosity of the paint is poor.

【００３６】次に無機質粉体または無機質粉粒体とは、
水性塗料組成物Ａにおいては粒径が４５〜２５０μｍの
ものを、水性塗料組成物Ｂにおいては、粒径が０．５〜
４５μｍと４５〜１０００μｍのものを混合したもので
あり、一般に塗料中に体質顔料として配合するものであ
れば特に限定されるものではない。このような無機質粉
体としては、重質炭酸カルシウム、寒水石、カオリン、
クレー、珪藻土、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、石英粉等があげられる。各
水性塗料組成物において粒径が範囲外となると、無機質
繊維との複合作用である乾燥収縮の緩和効果が十分に発
揮されない。Next, the inorganic powder or the inorganic powder granules means
The water-based coating composition A has a particle size of 45 to 250 μm, and the water-based coating composition B has a particle size of 0.5 to 250 μm.
It is a mixture of 45 μm and 45 to 1000 μm, and is not particularly limited as long as it is generally mixed in the paint as an extender pigment. Examples of such inorganic powders include heavy calcium carbonate, cold water stone, kaolin,
Examples thereof include clay, diatomaceous earth, talc, barite powder, precipitated barium sulfate, barium carbonate, silica sand and quartz powder. If the particle diameter is out of the range in each water-based coating composition, the effect of mitigating drying shrinkage, which is a composite action with the inorganic fiber, cannot be sufficiently exhibited.

【００３７】本発明の各水性塗料組成物は、前述の各構
成成分以外にも通常塗料に配合することが可能な各種の
添加剤、すなわち分散剤、増粘剤、湿潤調整剤、防腐
剤、抗菌剤、防藻剤、難燃剤等を配合することができ
る。また、着色顔料や着色骨材等の配合により色彩を付
与することが可能である。Each of the aqueous coating compositions of the present invention contains various additives other than the above-mentioned constituents which can be usually added to the coating composition, that is, a dispersant, a thickener, a wetting modifier, a preservative, Antibacterial agents, anti-algal agents, flame retardants and the like can be added. Further, it is possible to add a color by blending a color pigment or a colored aggregate.

【００３８】本発明では、下地の凹凸を調整し平滑な表
面を形成し、比較的柔らかい下地にも追従する水性塗料
組成物Ａと、耐久性と化粧性を付与する水性塗料組成物
Ｂを積層塗付することにより、比較的凹凸の有る床面に
おいても平滑で耐久性、耐摩耗性に優れた床面を形成す
ることができるものである。また、このような積層構造
により、床面の凹凸に起因する塗膜厚みの部分的なばら
つきが有るにも関わらず、乾燥収縮によるクラックを生
じることが無い。これは前述の各構成成分の組み合わせ
とともに、それら各構成成分の物性の規定によって得ら
れるものである。水性塗料組成物Ａと水性塗料組成物Ｂ
の塗装方法は特に限定されない。但し、床面を考慮する
とローラー塗り、こて塗りが望ましい。In the present invention, the water-based coating composition A for adjusting the irregularities of the base to form a smooth surface and conforming to a relatively soft base and the water-based coating composition B for imparting durability and makeup are laminated. By applying, it is possible to form a floor surface which is smooth and has excellent durability and abrasion resistance even on a floor surface having relatively unevenness. Further, due to such a laminated structure, cracks due to drying shrinkage do not occur even though there is partial variation in coating film thickness due to unevenness of the floor surface. This is obtained by the combination of the above-mentioned constituents and by defining the physical properties of the constituents. Aqueous coating composition A and aqueous coating composition B
The coating method is not particularly limited. However, considering the floor surface, roller coating or trowel coating is preferable.

【００３９】本発明の第二の解決課題である乾燥収縮の
問題は、水性塗料組成物Ａにおいて、ａ．合成樹脂エマ
ルションの固形分１００重量部に対して、ｃ．無機質繊
維が５〜１０重量部、ｄ．その他の無機質粉体が１００
〜２００重量部、水性塗料組成物Ｂにおいては、ｂ．架
橋形の合成樹脂エマルションの固形分１００重量部に対
して、ｃ．無機質繊維が５〜１０重量部、ｅ．粒径が
０．５〜４５μｍのものと４５〜１０００μｍのもの
を、重量比率１：５〜１：１５で混合した無機質粉粒体
が１５０〜３００重量部である時に効果が発揮される。
また、その塗膜厚は水性塗料組成物Ａが０．５〜１０ｍ
ｍ、水性塗料組成物Ｂが０．１〜３ｍｍとすれば塗膜の
積層による効果が発揮される。The problem of drying shrinkage, which is the second problem to be solved by the present invention, is that in water-based coating composition A, a. With respect to 100 parts by weight of the solid content of the synthetic resin emulsion, c . 5 to 10 parts by weight of inorganic fibers, d . 100 other inorganic powders
.About.200 parts by weight, in the aqueous coating composition B, b . 100 parts by weight of the solid content of the crosslinked synthetic resin emulsion, c . 5 to 10 parts by weight of inorganic fibers, e. The effect is exhibited when the inorganic powdery particles obtained by mixing particles having a particle diameter of 0.5 to 45 μm and particles having a particle diameter of 45 to 1000 μm in a weight ratio of 1: 5 to 1:15 are 150 to 300 parts by weight.
The coating film thickness of the water-based coating composition A is 0.5 to 10 m.
m, the aqueous coating composition B is Ru is demonstrated the effect of the laminate of 0.1~3mm Tosureba coating.

【００４０】また、本発明の水性塗料組成物は、水性塗
料組成物Ａを塗装し、塗膜が乾燥した後に目地棒や孔空
き型紙等の型材を貼り、続いて水性塗料組成物Ｂを塗装
した後に、それら型材を取り除くことにより、水性塗料
組成物Ｂによる凹凸模様を形成することができる。この
とき型材の厚みは水性塗料組成物Ｂの塗装膜厚となる。
このような型材としては、例えば特公平１−４６１８９
号公報に記載のシートや特公平５−４９７号公報に記載
の型部材があげられる。また、これらの型材を取り除く
時期は、水性塗料組成物Ｂの厚みや型材の種類により、
未乾燥時または乾燥時の何れかを適宜選択することがで
きる。このような型材を用いた塗装においては、水性塗
料組成物Ａと水性塗料組成物Ｂの塗装方法は特に限定さ
れない。但し、水性塗料組成物Ｂは、型材への充填塗装
を考慮するとこて塗りが望ましい。The aqueous coating composition of the present invention is prepared by coating the aqueous coating composition A, applying a mold material such as joint bar or perforated pattern paper after the coating film has dried, and then coating the aqueous coating composition B. After that, by removing those mold materials, it is possible to form an uneven pattern of the water-based coating composition B. At this time, the thickness of the mold material is the coating film thickness of the aqueous coating composition B.
As such a mold material, for example, Japanese Patent Publication No. 1-46189
Examples of the sheet include the sheet described in Japanese Patent Publication No. Hei 5/497 and the mold member described in Japanese Patent Publication No. 5-497. The timing of removing these mold materials depends on the thickness of the aqueous coating composition B and the type of mold material.
Either undried or dried can be appropriately selected. In coating using such a mold material, the coating method of the aqueous coating composition A and the aqueous coating composition B is not particularly limited. However, the aqueous coating composition B is preferably troweled in consideration of filling coating on the mold material.

【００４１】このような型材を用いた凹凸模様形成の場
合も、前述のI．に記載のように水性塗料組成物Ａ、水
性塗料組成物Ｂ中の構成成分を特定のものとすることに
より、下地の不陸や凹凸を調整し、平滑面を形成できる
と共に、塗付面への実用上十分な密着性を有し、形成さ
れた平滑面の精度が高く、型紙シートや目地棒を貼り付
けて、凹凸模様形成材料を塗付した場合、隙間への滲み
込みが生じず、凹凸模様の境界を明瞭なものとするとい
う、本発明の第三の課題を解決することができる。Also in the case of forming a concavo-convex pattern using such a mold material, the above-mentioned I. As described above, by making the constituent components in the water-based coating composition A and the water-based coating composition B specific, it is possible to adjust the unevenness and unevenness of the base to form a smooth surface, and at the same time to the coated surface. With practically sufficient adhesiveness, the accuracy of the formed smooth surface is high, pasting a pattern sheet or joint bar, and applying an uneven pattern forming material does not cause bleeding into the gap, It is possible to solve the third problem of the present invention to make the boundaries of the uneven pattern clear.

【００４２】ここで水性塗料組成物Ａのｂ．無機質繊維
の繊維長が５μｍより短い場合は、クラック防止効果が
不十分となり、３０μｍより長い場合は、塗料中に分散
しづらく、繊維の凝集物微粒子を生じ、形成された塗膜
表面が微細な凹凸状となり平滑面を造りにくい。また、
前述のような型材を用いた施工の場合に、型材と水性塗
料組成物Ａ塗膜との間に微細な隙間ができ、水性塗料組
成物Ｂが型材の隙間に染み込む為、型材を用いた凹凸模
様の目地部分がぼやけた感じになる。つぎにｂ．無機質
繊維の量が５重量部より少ない場合は、厚塗り時のクラ
ックに追従できなくなり、１０重量部より多い場合は、
塗料の粘性がチクソトロピックとなり、こてむらが出や
すくなり凹凸状となる。The aqueous coating composition A b. When the fiber length of the inorganic fiber is shorter than 5 μm, the crack preventing effect becomes insufficient, and when it is longer than 30 μm, it is difficult to disperse in the paint and fine particles of aggregates of the fiber are generated, and the formed coating film surface is fine. It becomes uneven and it is difficult to make a smooth surface. Also,
In the case of construction using the mold material as described above, a fine gap is formed between the mold material and the water-based coating composition A coating film, and the water-based coating composition B permeates into the gap of the mold material, and therefore unevenness using the mold material The joints of the pattern are blurred. Then b. When the amount of the inorganic fiber is less than 5 parts by weight, it becomes impossible to follow the cracks during thick coating, and when it is more than 10 parts by weight,
The viscosity of the paint becomes thixotropic, and uneven trowels tend to appear, resulting in unevenness.

【００４３】ｃ．無機質粉体の粒径が４５μｍより小さ
い場合は、微粒粉体の凝集力によりクラックを生じやす
くなり、２５０μｍより大きい場合は、凹凸が大きいた
め、前述の型材を用いた施工の場合に、型材と水性塗料
組成物Ａ塗膜との間に微細な隙間ができ、水性塗料組成
物Ｂが型材の隙間に染み込む為、型材を用いた凹凸模様
の目地部分がぼやけた感じになる。また、ｃ．無機質粉
体が、１００重量部より少ない場合は、初期の内部強度
が弱くなり、型材の除去の際に型材と共に剥がれてしま
う。２００重量部より多い場合は、こてむらが出やすく
なり凹凸状となる。C. If the particle size of the inorganic powder is smaller than 45 μm, cracks are likely to occur due to the cohesive force of the fine powder, and if it is larger than 250 μm, the unevenness is large, so that when the above-mentioned mold material is used, Since a fine gap is formed between the coating film of the aqueous coating composition A and the aqueous coating composition B permeates into the gap between the mold materials, the joint portion of the uneven pattern using the mold material becomes blurred. Also, c. If the amount of the inorganic powder is less than 100 parts by weight, the initial internal strength will be weak and will peel off together with the mold material when the mold material is removed. If the amount is more than 200 parts by weight, trowel unevenness is likely to occur and the surface becomes uneven.

【００４４】ここで水性塗料組成物Ｂのｂ．架橋形合成
樹脂エマルションのＴｇが０℃より低い場合は、上塗材
に必要物性である耐摩耗性が劣り、ｂ．架橋形合成樹脂
エマルションのＴｇが２０℃より高い場合は、低温造膜
性が悪くなり、これを改良する為に造膜助剤を大量配合
するとかえって初期の塗膜強度や物性を悪くする結果と
なる。Here, b . When the Tg of the crosslinked synthetic resin emulsion is lower than 0 ° C., the abrasion resistance which is a physical property required for the overcoat material is inferior, b . When the Tg of the crosslinked synthetic resin emulsion is higher than 20 ° C., the low-temperature film-forming property is deteriorated, and if a large amount of a film-forming auxiliary is added to improve this, the initial coating film strength and physical properties are deteriorated. Become.

【００４５】ｃ．無機質繊維の繊維長については、前述
の水性塗料組成物Ａと同様に、５μｍより短い場合は、
クラック防止効果が不十分となり、３０μｍより長い場
合は、塗料中に分散しづらく、繊維の凝集物微粒子を生
じ、形成された塗膜表面がブツブツ状となり外観を損ね
る結果となる。ｃ．無機質繊維の量についても、前述の
水性塗料組成物Ａと同様に５重量部より少ない場合は、
厚塗り時のクラックに追従できなくなり、１０重量部よ
り多い場合は、塗料のチクソ性が上がり、こてむらが出
やすくなり凹凸状となる。[0045] c. Regarding the fiber length of the inorganic fibers, when the fiber length is shorter than 5 μm, as in the case of the above-mentioned aqueous coating composition A,
If the crack prevention effect is insufficient and the length is longer than 30 μm, it is difficult to disperse in the coating material, and fine particles of aggregates of fibers are generated, and the surface of the formed coating film becomes bumpy and the appearance is impaired. c . Regarding the amount of the inorganic fiber, as in the case of the above-mentioned aqueous coating composition A, when the amount is less than 5 parts by weight,
When it is impossible to follow the cracks during thick coating and the amount is more than 10 parts by weight, the thixotropy of the coating is increased, and unevenness of the trowel is likely to occur, resulting in unevenness.

【００４６】ｅ．無機質粉粒体としては前述ｃ．と同様
の組成の粉粒体を用いる。ここで無機質粉粒体の粒径が
０．５μｍより小さい場合は、微粒粉体の凝集力により
クラックを生じやすくなり、１０００μｍより大きい場
合は、前述の型材を用いた施工の場合に、粒子径の大き
さに起因して、こて塗りを行った際の塗膜表面に骨材の
引きずられた筋跡が発生し美観を損ねる。また、重量比
率が１：５〜１５の範囲を外れて４５〜１０００μｍの
ものが少なくなると、クラックを生じやすくなり、４５
〜１０００μｍのものが多くなると、粒子径の異なる粉
体の充填状態のバランスがくずれて、ピンホールを生じ
やすくなる。また、強度も若干低下する傾向になる。
ｅ．無機質粉粒体が、１５０重量部より少ない場合は、
無機質粉粒体が沈降し、浮き上がった樹脂が塗膜表面に
局在化するため、表面が非常に滑りやすい状態になる。
３００重量部より多い場合は、粘度が高くなり、こてむ
らが出やすくなり凹凸状となる他、塗膜が脆くなり、耐
摩耗性、付着強度、応力緩和性が劣る。E. As the inorganic powdery particles, the above-mentioned c. A powder having the same composition as that of is used. Here, if the particle size of the inorganic powder is smaller than 0.5 μm, cracks are likely to occur due to the cohesive force of the fine powder, and if it is larger than 1000 μm, the particle size in the case of using the above-mentioned mold material is increased. Due to the size, the traces of aggregate dragging are generated on the surface of the coating film when trowel coating is applied, and the appearance is impaired. Further, when the weight ratio is out of the range of 1: 5 to 15 and 45 to 1000 μm is reduced, cracks are more likely to occur.
When the number of particles having a particle size of up to 1000 μm increases, the balance of the filling state of powders having different particle diameters is lost, and pinholes are likely to occur. Also, the strength tends to be slightly reduced.
e. If the amount of inorganic powder is less than 150 parts by weight,
Since the inorganic powder and granules settle and the floating resin is localized on the coating film surface, the surface becomes very slippery.
When the amount is more than 300 parts by weight, the viscosity becomes high, the unevenness of the trowel is likely to occur and the surface becomes uneven, and the coating film becomes brittle, resulting in poor wear resistance, adhesive strength and stress relaxation property.

【００４７】このような水性塗料組成物は、水性塗料組
成物Ａが膜厚０．５〜１０ｍｍで塗装し乾燥後に、続い
て水性塗料組成物Ｂを膜厚０．１〜３ｍｍで積層塗装す
るものであるが、このとき水性塗料組成物Ａの膜厚が
０．５ｍｍより薄いと下地の凹凸をカバーできない、１
０ｍｍより厚いとクラックを生じる可能性がでてくる。
水性塗料組成物Ｂの膜厚が０．１ｍｍより薄いと、こて
塗りの際に骨材のころがった跡を生じたり、水性塗料組
成物Ａと水性塗料組成物Ｂの色相が異なる場合に、水性
塗料組成物Ｂ塗膜が透けて、水性塗料組成物Ａの色相が
現れる。３ｍｍより厚いと塗膜の内部硬化が遅くなり、
型材を除去する際に塗膜が剥離する可能性がある。In such an aqueous coating composition, the aqueous coating composition A is coated with a film thickness of 0.5 to 10 mm and dried, and then the aqueous coating composition B is laminated and coated with a film thickness of 0.1 to 3 mm. However, if the thickness of the water-based coating composition A is less than 0.5 mm at this time, the unevenness of the base cannot be covered.
If it is thicker than 0 mm, cracks may occur.
When the film thickness of the water-based coating composition B is less than 0.1 mm, the marks of rolling aggregate are generated during trowel application, and when the hues of the water-based coating composition A and the water-based coating composition B are different, Aqueous coating composition B The coating film is transparent, and the hue of aqueous coating composition A appears. If it is thicker than 3 mm, the internal curing of the coating film will slow down,
The coating film may peel off when the mold material is removed.

【００４８】本発明の床被覆用水性塗料組成物の施工方
法においては、塗装する床面の状態によっては、プライ
マーを塗装してもよい。このようなプライマーとして
は、アクリル樹脂エマルション系、塩化ビニル樹脂エマ
ルション系等の水性形、アクリル樹脂系、エポキシ樹脂
系、ウレタン樹脂系等の溶剤形が使用できる。また、よ
り耐候性、意匠性を高めるために、仕上材を塗付するこ
とも可能である。このような仕上材としては、アクリル
樹脂エマルション系、アクリル−ウレタン樹脂エマルシ
ョン系、加水分解性シリル基含有アクリル樹脂エマルシ
ョン系等の水性系、アクリル樹脂系、ウレタン樹脂系、
加水分解性シリル基含有アクリル樹脂系等の溶剤形エナ
メルないしはクリヤーが用いられる。In the method for applying the aqueous floor coating composition of the present invention, a primer may be applied depending on the condition of the floor surface to be applied. As such a primer, an aqueous type such as an acrylic resin emulsion type or a vinyl chloride resin emulsion type, or a solvent type such as an acrylic resin type, an epoxy resin type or a urethane resin type can be used. In addition, a finishing material can be applied in order to further improve weather resistance and designability. As such a finishing material, an acrylic resin emulsion system, an acrylic-urethane resin emulsion system, an aqueous system such as a hydrolyzable silyl group-containing acrylic resin emulsion system, an acrylic resin system, a urethane resin system,
Solvent type enamel or clear such as a hydrolyzable silyl group-containing acrylic resin is used.

【００４９】[0049]

【実施例】以下に本発明の効果を実証すべく、各種水性
塗料組成物を作製し、以下の試験方法に基づいて試験を
行った。EXAMPLES In order to demonstrate the effects of the present invention, various water-based coating compositions were prepared and tested according to the following test methods.

【００５０】（試験方法） ・アスファルト追従性試験 ３０×３０ｃｍのアスファルトコンクリートの中央部
に、第一層（下層）、第二層（上層）それぞれの水性塗
料組成物を、下層となるものは５ｍｍの塗膜厚で、上層
となるものは２ｍｍの塗膜厚で２０×２０ｃｍの範囲に
こて塗り塗装する。施工後、約１週間養生したのち、そ
の試験体を、夏場の炎天下のアスファルト下地を想定
し、７０℃の恒温室に入れ、試験体が７０℃に達した後
に、恒温室から取り出し、JISK 5400-1990 「塗料一般
試験方法」8.3.1 落球試験に用いる鉄球５００ｇを使
用して、１ｍの高さから落とし、塗膜の状態を観察し
た。この時、異常の無いものを○、表面のへこみがある
ものを△、塗膜の割れ及びアスファルトと塗膜の剥離が
あるものを×として評価した。(Test method) Asphalt followability test A water-based coating composition for each of the first layer (lower layer) and the second layer (upper layer) was applied to the center of 30 × 30 cm asphalt concrete, and the lower layer was 5 mm. The coating film thickness of 2) is the upper layer, and the coating film thickness is 2 mm, and the coating film is troweled in a range of 20 × 20 cm. After the construction, after curing for about 1 week, the test body is put in a constant temperature room at 70 ° C, assuming an asphalt base under hot weather in summer, and after the test body reaches 70 ° C, it is taken out from the constant temperature room and JISK 5400 -1990 "Paint General Test Method" 8.3.1 Using 500 g of iron balls used in the falling ball test, the state of the coating film was observed by dropping from a height of 1 m. At this time, no abnormality was evaluated as ◯, dents on the surface were evaluated as Δ, and cracks in the coating film and peeling between the asphalt and the coating film were evaluated as x.

【００５１】・耐摩耗性試験 第一層（下層）、第二層（上層）それぞれの水性塗料組
成物を、エポキシ樹脂系プライマーを塗付・乾燥した、
大きさ１００ｍｍ×１００ｍｍ×１ｍｍの鋼板にそれぞ
れ１ｍｍの塗膜厚にてこて塗り塗装し乾燥後、１週間標
準状態に置いたものを、JISK 5400-1990 「塗料一般試
験方法」8.9 「耐摩耗性」に準じて摩耗減量（ｍｇ）
を算出した。Abrasion resistance test The aqueous coating composition of each of the first layer (lower layer) and the second layer (upper layer) was coated with an epoxy resin primer and dried,
JIS K 5400-1990 "General test method for paints" 8.9 "Abrasion resistance" Wear loss (mg)
Was calculated.

【００５２】・ひび割れ（クラック）性試験 第一層（下層）、第二層（上層）それぞれの水性塗料組
成物を、アクリル樹脂エマルション系プライマーを塗付
・乾燥した大きさ２００ｍｍ×３００ｍｍ×３ｍｍのス
レート板に下層となるものは１０ｍｍの塗膜厚で、上層
となるものは２ｍｍ塗膜厚でこて塗り塗装し、塗装直後
にJISA 6909-1981 「薄付け仕上塗材」5.7 「初期乾
燥によるひび割れ抵抗性」に準じて、風速３ｍ／ｓ±１
０％に調整した風洞内に入れ、6時間後に試験体を取り
出し、表面にひび割れ（クラック）が生じているかどう
かを目視にて確認した。このときひび割れの無いものを
×、ひび割れのあるものを○として評価した。Crack resistance test Aqueous coating compositions of the first layer (lower layer) and the second layer (upper layer) were coated with an acrylic resin emulsion-based primer and dried, and the size was 200 mm × 300 mm × 3 mm. The lower layer of the slate plate has a coating thickness of 10 mm, and the upper layer has a coating thickness of 2 mm. It is troweled and coated immediately after the JIS A 6909-1981 "Thin finish coating material" 5.7 "Initial drying" Wind resistance 3m / s ± 1 according to “Crack resistance”
It was put in a wind tunnel adjusted to 0%, the test body was taken out after 6 hours, and it was visually confirmed whether or not cracks were generated on the surface. At this time, those without cracks were evaluated as x, and those with cracks were evaluated as o.

【００５３】・上層にじみ性試験 アクリル樹脂エマルション系プライマーを塗付・乾燥し
た、大きさ９１０ｍｍ×９１０ｍｍ×６ｍｍのスレート
板に、下層となる水性塗料組成物を１ｍｍの塗膜厚で、
こてにて塗付し２４時間乾燥後に、タイル模様に複数の
孔が開き、剥離性粘着剤層の積層された厚み１ｍｍの型
紙を全面に貼り付けした。さらに、その型紙の孔部分に
上層となる水性塗料組成物をこてにて充填塗付した。こ
のとき上層となる水性塗料組成物が、型紙の孔部分か
ら、型紙と下層塗膜との粘着部分の隙間ににじみ込んで
いないかを目視にて確認する。このときにじみの無いも
のを○、若干にじみのあるものを△、明確ににじみが見
られるものを×として評価した。Bleeding test on upper layer A slate plate having a size of 910 mm × 910 mm × 6 mm, coated with an acrylic resin emulsion-based primer and dried, was coated with the lower layer aqueous coating composition at a coating thickness of 1 mm.
After coating with a trowel and drying for 24 hours, a plurality of holes were formed in the tile pattern, and a pattern paper having a thickness of 1 mm on which a peelable pressure-sensitive adhesive layer was laminated was attached to the entire surface. Further, the pores of the paper pattern were filled and coated with an aqueous coating composition as an upper layer with a trowel. At this time, it is visually confirmed whether or not the aqueous coating composition as the upper layer has permeated from the hole portion of the pattern paper into the gap between the adhesive portion between the pattern paper and the lower layer coating film. At this time, no bleeding was evaluated as ◯, slightly bleeding was evaluated as Δ, and clear bleeding was evaluated as x.

【００５４】・低温時付着性試験 アクリル樹脂エマルション系プライマーを塗付・乾燥し
た、大きさ９１０ｍｍ×９１０ｍｍ×６ｍｍのスレート
板に、低温（５℃）の条件下にて、下層となる水性塗料
組成物を１ｍｍの塗膜厚で、こてにて塗付し、１６時間
乾燥後に、タイル模様に複数の孔が開き、剥離性粘着剤
層の積層された厚み１ｍｍの型紙を全面に貼り付けし
た。さらに、その型紙の孔部分に上層となる水性塗料組
成物をこてにて充填塗付し、１時間後に型紙を除去した
場合に、下層の水性塗料組成物の塗膜が型紙と共に剥離
するかどうかを目視にて確認した。このとき剥離しない
ものを○、剥離するものを×として評価した。Adhesion test at low temperature On a slate plate having a size of 910 mm × 910 mm × 6 mm, to which an acrylic resin emulsion-based primer has been applied and dried, under a low temperature (5 ° C.) condition, a lower layer aqueous coating composition The product having a coating film thickness of 1 mm was applied with a trowel, and after drying for 16 hours, a plurality of holes were opened in the tile pattern, and a pattern paper having a thickness of 1 mm on which a peelable pressure-sensitive adhesive layer was laminated was applied to the entire surface. . Further, when the aqueous coating composition for the upper layer is filled and applied to the pores of the pattern with a trowel and the pattern is removed after 1 hour, does the coating film of the lower aqueous coating composition peel off together with the pattern? It was visually confirmed. At this time, those that did not peel off were evaluated as ◯, and those that peeled off were evaluated as x.

【００５５】・仕上がり性試験 前述の型材にじみ性試験の際に、下層となる水性塗料組
成物をこてにて塗装した場合および上層の水性塗料組成
物をこてにて塗装した場合の、塗膜表面のこてむらの状
態、および粗粒骨材の滑りによる筋跡の発生の状態を目
視にて確認した。このとき筋跡が無いものを○、筋跡が
若干あるものを△、非常に筋跡があるものを×として評
価した。Finishing test In the above-described mold material bleeding test, coating is performed when the lower layer aqueous coating composition is coated with a trowel and when the upper layer aqueous coating composition is coated with a trowel. The state of trowel unevenness on the film surface and the state of generation of streak due to slippage of the coarse-grained aggregate were visually confirmed. At this time, the sample having no streak was evaluated as ◯, the sample having some streak was evaluated as Δ, and the sample having very streak was evaluated as x.

【００５６】・耐エフロレッセンス性試験 前述の上層にじみ性試験および仕上がり性試験の際に用
いた試験体を１週間標準状態にて置いたものを、水中に
１日間浸漬し、その後引き上げて乾燥後、塗膜の表面状
態を目視にて確認する。このとき塗膜表面や目地部分に
エフロレッセンスが発生していないものを○、エフロレ
ッセンスの発生しているものを×として評価した。Efflorescence resistance test The test pieces used in the above-mentioned upper layer bleeding test and finish test were left in a standard state for 1 week, immersed in water for 1 day, then pulled up and dried. , Visually confirm the surface condition of the coating film. At this time, the case where no efflorescence was generated on the coating film surface or the joint portion was evaluated as ◯, and the case where efflorescence was generated was evaluated as x.

【００５７】（配合例１〜配合例１９） 本発明の効果確認のために第一層（下層）、第二層（上
層）となる各水性塗料組成物について製造した。これら
の水性塗料組成物の製造に用いた原料は、表１に記載し
たものを用い各配合は表２および表３に記載のようにし
た。(Formulation Examples 1 to 19 ) For the purpose of confirming the effects of the present invention, water-based coating compositions for the first layer (lower layer) and the second layer (upper layer) were produced. The raw materials used in the production of these water-based coating compositions were those shown in Table 1, and the respective formulations were as shown in Tables 2 and 3.

【表１】 [Table 1]

【表２】 [Table 2]

【表３】 [Table 3]

【００５８】（積層例１）表４に示したように下層とし
て配合例１、上層として配合例３を用い、前述の各試験
方法について試験を行った。結果は表５に示したように
すべての試験において良好な結果となった。すなわち形
成された塗膜が、 ・下地への追従性。 ・耐摩耗性に優れた表面の形成。 ・厚塗りにもかかわらずクラックを生じることがない。 ・下地の凹凸の補修。 ・型材を用いて各種の凹凸模様が形成可能。 ・目地におけるにじみ問題を生じることが無い。 という効果を有する優れた床被覆用水性塗料組成物の施
工方法であることが明確になった。(Lamination Example 1) As shown in Table 4, using the formulation example 1 as the lower layer and the formulation example 3 as the upper layer, the above-mentioned respective test methods were tested. As shown in Table 5, the results were good in all tests. That is, the formed coating film has the following characteristics:・ Formation of surface with excellent wear resistance.・ No cracks occur despite thick coating.・ Repair unevenness of the base.・ Various uneven patterns can be formed using the mold material. -No bleeding problem at joints will occur. It has been clarified that the method is an excellent method for applying an aqueous floor coating composition for floor coating, which has the above effect.

【００５９】（積層例２） 積層例１と同様に表４に示した各水性塗料組成物の組み
合わせによって、下層、上層を塗装し各試験を行った。
結果は表５に示したようにすべての試験において実施例
１と同様に良好な結果となった。（積層例３） 下層と上層の水性塗料組成物として、共に合成樹脂エマ
ルションが架橋形の配合例２及び配合例３を用いた以外
は、積層例１と同様に各試験を行った。結果は表６に示
したように、すべての試験において実施例１と同様に良
好な結果となった。 (Lamination Example 2) Similar to the lamination example 1, a combination of the respective aqueous coating compositions shown in Table 4 was applied to the lower layer and the upper layer, and each test was conducted.
As shown in Table 5, in all tests, good results were obtained as in Example 1. (Lamination example 3) Both the lower layer and the upper layer of the aqueous coating composition were made of synthetic resin
Except that the formulation example 2 and the formulation example 3 in which the cation is a crosslinked type are used
In the same manner as in Stacking Example 1, each test was performed. The results are shown in Table 6.
As described above, in all the tests, the same results as in Example 1 were obtained.
It was a good result.

【００６０】（積層例４） 下層の水性塗料組成物として、無機質繊維であるセピオ
ライトの含有量が、本発明の規定する範囲より少ない配
合例５を用い、上層の水性塗料組成物として配合例４を
用いた以外は、積層例１と同様に各試験を行った。結果
は表５に示したように、下層を１０ｍｍもの厚塗りとし
た場合には、ひび割れ性試験においてクラックを生じ
た。また、この下層の表面に型材を貼り付けて上層を塗
装し、その後型材を除去した際には下層の付着強度が弱
く剥離してしまった。(Lamination Example 4 ) As a lower layer aqueous coating composition, a formulation example 5 in which the content of inorganic fiber sepiolite was less than the range specified by the present invention was used, and as an upper layer aqueous coating composition, a formulation example 4 was used. Each test was performed in the same manner as in Laminate Example 1 except that the above was used. As a result, as shown in Table 5 , when the lower layer was coated as thick as 10 mm, cracks were generated in the crackability test . Further, when a mold material was attached to the surface of the lower layer to coat the upper layer and then the mold material was removed, the lower layer had a weak adhesive strength and was peeled off.

【００６１】（積層例５） 下層の水性塗料組成物として、セピオライトの含有量
が、本発明の規定する範囲より多い配合例６を用い、上
層の水性塗料組成物として配合例４を用いた以外は、積
層例１と同様に各試験を行った。結果は表５に示したよ
うに、下層の水性塗料組成物の粘性がチクソトロピック
なため、こて塗り時の塗膜表面が凹凸状となった。この
ため、型材を貼り付けての上層の塗装時に目地部分にお
いて、上層の水性塗料組成物が型材と下層との隙間にに
じみ込んだ。その結果、型材除去後の上層の凹凸模様凸
部境界が不明瞭となってしまった。(Lamination Example 5 ) As the lower layer aqueous coating composition, Formulation Example 6 having a sepiolite content higher than the range specified by the present invention was used, and as the upper layer aqueous coating composition, Formulation Example 4 was used. In the same manner as in Stacking Example 1, each test was performed. As shown in Table 5 , the viscosity of the lower aqueous coating composition was thixotropic, so that the coating film surface was uneven during trowel coating. Therefore, at the time of applying the mold material and coating the upper layer, the aqueous coating composition of the upper layer permeated into the gap between the mold material and the lower layer in the joint portion. As a result, the boundary between the convex and concave portions of the upper layer after removing the mold material became unclear.

【００６２】（積層例６） 下層の水性塗料組成物として、ＰＶＣが本発明の規定す
る範囲より少ない配合例７を用い、上層の水性塗料組成
物として配合例４を用いた以外は、積層例１と同様に各
試験を行った。結果は表５に示したように、下層が軟ら
かすぎて、上層が追従できずクラックを生じた。すなわ
ち本発明の解決課題の第一であるアスファルト追従性さ
え満たすことができなかった。(Lamination Example 6 ) Lamination Example 6 except that formulation example 7 having a PVC content less than the range specified by the present invention was used as the lower layer aqueous coating composition and formulation example 4 was used as the upper layer aqueous coating composition. Each test was conducted in the same manner as 1. As a result, as shown in Table 5 , the lower layer was too soft and the upper layer could not follow, and cracks were generated. That is, even the asphalt followability, which is the first problem to be solved by the present invention, could not be satisfied.

【００６３】（積層例７） 下層の水性塗料組成物として、ＰＶＣが本発明の規定す
る範囲より多い配合例８を用い、上層の水性塗料組成物
として配合例４を用いた以外は、積層例１と同様に各試
験を行った。結果は表５に示したように、下層を１０ｍ
ｍもの厚塗りとした場合には、ひび割れ性試験において
クラックを生じた。また、下層を５ｍｍ程度の厚みにし
た場合にもクラックを生じ、本発明第一の解決課題であ
るアスファルト追従性さえ満たすことができなかった。(Lamination Example 7 ) Lamination Example 7 except that as the lower layer aqueous coating composition, the formulation example 8 in which PVC was more than the range specified by the present invention was used and as the upper layer aqueous coating composition, the formulation example 4 was used. Each test was conducted in the same manner as 1. As shown in Table 5 , the results are as follows:
When the coating thickness was as thick as m, cracks were generated in the crackability test. Further, even when the lower layer had a thickness of about 5 mm, cracks occurred, and it was not possible to satisfy even the asphalt followability, which is the first problem to be solved by the present invention.

【００６４】（積層例８） 下層の水性塗料組成物として配合例１を用い、上層の水
性塗料組成物として、２種混合の無機質粉粒体の混合比
率が、本発明の規定する混合比率に対して、大粒径のも
のが少ない配合例１５を用いた以外は、積層例１と同様
に各試験を行った。結果は表５に示したように、相対的
に微粒粉体の量が増えるため、非常に乾燥速度が速い条
件下においては、微粒粉体の凝集力により上層にクラッ
クを生じた。(Lamination Example 8 ) As the lower layer aqueous coating composition, Formulation Example 1 was used, and as the upper layer aqueous coating composition, the mixing ratio of the two types of mixed inorganic powders was set to the mixing ratio defined by the present invention. On the other hand, each test was performed in the same manner as in Laminate Example 1 except that Formulation Example 15 containing few large particles was used. Results As shown in Table 5, the amount of relatively fine powder is increased, in the very dry speed is fast conditions, resulting in cracks in the upper layer by the cohesive force of the fine powder.

【００６５】（積層例９） 下層の水性塗料組成物として配合例１を用い、上層の水
性塗料組成物として、２種混合の無機質粉粒体の混合比
率が、本発明の規定する混合比率に対して、大粒径のも
のが多い配合例１６を用いた以外は、積層例１と同様に
各試験を行った。結果は表５に示したように、粒子径の
異なる無機質粉粒体の充填状態が崩れて上層にピンホー
ルを発生した。また、上層の水性塗料組成物の粘性が変
化するため、型材と下層の隙間ににじみ込む傾向となっ
た。(Lamination Example 9 ) As the lower layer aqueous coating composition, Formulation Example 1 was used, and as the upper layer aqueous coating composition, the mixing ratio of the two types of mixed inorganic powders was set to the mixing ratio specified by the present invention. On the other hand, each test was performed in the same manner as in Laminate Example 1 except that Formulation Example 16 with a large particle size was used. Results As shown in Table 5, was a pinhole occurs in the upper layer and collapsed state of filling different inorganic granular material particle sizes. In addition, since the viscosity of the aqueous coating composition of the upper layer changes, it tends to seep into the gap between the mold material and the lower layer.

【００６６】（積層例１０） 下層の水性塗料組成物として配合例１を用い、上層の水
性塗料組成物として、ＰＶＣが本発明の規定する範囲よ
り少ない配合例１７を用いた以外は、積層例１と同様に
各試験を行った。結果は表５に示したように、少ない骨
材が上層中で沈降し、浮き上がった樹脂が表面に局在化
するため、表面が非常に滑りやすくなるとともに、耐摩
耗性が劣ることになる。また、上層の水性塗料組成物の
粘性が変化するため、型材と下層の隙間ににじみ込む傾
向となった。(Lamination Example 10 ) Formulation Example 1 was used as the lower layer aqueous coating composition, and as the upper layer aqueous coating composition, Formulation Example 17 was used in which the PVC was less than the range specified by the present invention . Each test was performed in the same manner as in Laminate Example 1 except for the above. As shown in Table 5 , since a small amount of aggregate settles in the upper layer and the floating resin is localized on the surface, the surface becomes very slippery and wear resistance is poor. In addition, since the viscosity of the aqueous coating composition of the upper layer changes, it tends to seep into the gap between the mold material and the lower layer.

【００６７】[0067]

【００６８】（積層例１１） 下層の水性塗料組成物として、セピオライトの繊維長が
本発明の規定する範囲より短い配合例９を用い、上層の
水性塗料組成物として配合例４を用いた以外は、積層例
１と同様に各試験を行った。結果は表６に示したよう
に、下層を１０ｍｍもの厚塗りとした場合には、ひび割
れ性試験においてクラックを生じた。また、同一配合量
としては、単繊維の分だけ比表面積が増加するため吸油
量が増え、この結果、下層の表面が凹凸状となり、仕上
がり性の低下と型材を貼り付けた場合の、上層の水性塗
料組成物のにじみが発生する。その結果、型材除去後の
上層の凹凸模様凸部境界が不明瞭となってしまった。(Lamination Example 11) As a lower layer aqueous coating composition, a formulation example 9 was used in which the fiber length of sepiolite was shorter than the range specified by the present invention , and a formulation example 4 was used as the upper layer aqueous coating composition. Each test was carried out in the same manner as in Laminate Example 1. As a result, as shown in Table 6, when the lower layer was coated with a thickness as thick as 10 mm, cracks were generated in the crackability test . Further , as the same blending amount, the oil absorption amount increases because the specific surface area increases by the amount of the single fiber, and as a result, the surface of the lower layer becomes uneven, and the finish is deteriorated and when the mold material is pasted, Bleeding of the aqueous coating composition occurs. As a result, the boundary between the convex and concave portions of the upper layer after removing the mold material became unclear.

【００６９】（積層例１２） 下層の水性塗料組成物として、セピオライトの繊維長が
本発明の規定する範囲より長い配合例１０を用い、上層
の水性塗料組成物として配合例４を用いた以外は、積層
例１と同様に各試験を行った。結果は表６に示したよう
に、下層の水性塗料組成物中において、繊維長の長いセ
ピオライトが分散しづらく、繊維の凝集物を生じる為、
下層の表面が凹凸となり、型材を貼り付けての上層の塗
装時に目地部分において、上層の水性塗料組成物が型材
と下層との隙間ににじみ込んだ。その結果、型材除去後
の上層の凹凸模様凸部境界が不明瞭となってしまった。(Lamination Example 12) As the lower aqueous coating composition, except that the formulation example 10 in which the fiber length of sepiolite was longer than the range specified by the present invention was used and the upper aqueous coating composition was the formulation example 4, Each test was carried out in the same manner as in Laminate Example 1. Results As shown in Table 6, in the lower layer of the aqueous coating composition, long sepiolite is hardly dispersed fiber length, for causing agglomerates of fibers,
The surface of the lower layer became uneven, and when the mold material was attached and the upper layer was coated, the aqueous coating composition of the upper layer permeated into the gap between the mold material and the lower layer at the joint portion. As a result, the boundary between the convex and concave portions of the upper layer after removing the mold material became unclear.

【００７０】（積層例１３） 下層の水性塗料組成物として、無機質粉体の粒径が、本
発明の規定する範囲より小さい配合例１１を用い、上層
の水性塗料組成物として配合例４を用いた以外は、積層
例１と同様に各試験を行った。結果は表６に示したよう
に、下層を１０ｍｍもの厚塗りとした場合には、ひび割
れ性試験においてクラックを生じた。また、下層の付着
強度が若干弱いため表面に型材を貼り付けて上層を塗装
し、その後型材を除去した際に下層が剥離してしまっ
た。(Lamination Example 13) As the lower layer aqueous coating composition, the formulation example 11 in which the particle diameter of the inorganic powder is smaller than the range specified by the present invention is used, and the upper layer aqueous coating composition is the formulation example 4. Each test was performed in the same manner as in Laminate Example 1 except that the above was not present. As a result, as shown in Table 6, when the lower layer was coated with a thickness as thick as 10 mm, cracks were generated in the crackability test . Further , since the lower layer had a slightly weaker adhesive strength, the lower layer was peeled off when the upper layer was coated by pasting the mold member on the surface and then the mold member was removed.

【００７１】（積層例１４） 下層の水性塗料組成物として、無機質粉体の粒径が、本
発明の規定する範囲より大きい配合例１２を用い、上層
の水性塗料組成物として配合例４を用いた以外は、積層
例１と同様に各試験を行った。結果は表６に示したよう
に、下層の表面の凹凸が大きい為、型材と下層表面との
間に隙間が生じ易く、上層の塗装時に目地部分におい
て、上層の水性塗料組成物が型材と下層との隙間ににじ
み込んだ。その結果、型材除去後の上層の凹凸模様凸部
境界が不明瞭となってしまった。(Lamination Example 14) As the lower-layer aqueous coating composition, Formulation Example 12 in which the particle size of the inorganic powder is larger than the range specified by the present invention is used, and as the upper-layer aqueous coating composition, Formulation Example 4 is used. Each test was performed in the same manner as in Laminate Example 1 except that the above was not present. As shown in Table 6, since the surface of the lower layer has large irregularities, a gap is apt to be formed between the mold and the surface of the lower layer, and at the time of coating the upper layer, the aqueous coating composition of the upper layer is mixed with the mold material and the lower layer. It soaked into the gap between. As a result, the boundary between the convex and concave portions of the upper layer after removing the mold material became unclear.

【００７２】（積層例１５） 下層の水性塗料組成物として配合例１を用い、上層の水
性塗料組成物として、無機質粉粒体の一方の粒子径が、
本発明の規定する範囲より大きい配合例１９を用いた以
外は、積層例１と同様に各試験を行った。結果は表６に
示したよう、骨材の粒径が大きい為、上層の水性塗料組
成物をこて塗りした際に、骨材による筋跡が生じた。(Lamination Example 15) As the lower layer aqueous coating composition, Formulation Example 1 was used, and as the upper layer aqueous coating composition, one of the particle diameters of the inorganic powder was
Each test was performed in the same manner as in Laminate Example 1 except that Formulation Example 19 larger than the range specified by the present invention was used. Results As shown in Table 6, since the particle size of the aggregate is large, upon troweling the upper layer of the aqueous coating composition, resulting muscle marks by bone material.

【００７３】（積層例１６）下層の水性塗料組成物とし
て、合成樹脂エマルションのＴｇが、本発明における範
囲より高く、粒径が大きい無機質粉体を用いた配合例１
３を用い、上層の水性塗料組成物として配合例４を用い
た以外は、積層例１と同様に各試験を行った。結果は表
６に示したように、本発明の解決課題の第一であるアス
ファルト追従性においてクラックを生じた。さらに、上
層の水性塗料組成物が型材と下層との隙間ににじみ込ん
だ。(Lamination Example 16) Formulation Example 1 using an inorganic powder having a Tg of a synthetic resin emulsion higher than the range of the present invention and a large particle size as the lower layer aqueous coating composition.
Each test was carried out in the same manner as in Laminate Example 1 except that No. 3 was used and Formulation Example 4 was used as the upper aqueous coating composition. As a result, as shown in Table 6, cracks were generated in the asphalt followability which is the first problem to be solved by the present invention. Furthermore, the upper layer aqueous coating composition permeated into the gap between the mold and the lower layer.

【００７４】（積層例１７）下層と上層の水性塗料組成
物として、共に合成樹脂エマルションが非架橋形の配合
例１及び配合例１４を用いた以外は、積層例１と同様に
各試験を行った。結果は表６に示したように、共に非架
橋形のためアスファルト追従性試験においてへこみを生
じ、上層表面の硬度が不十分のため、耐摩耗性にも非常
に劣る結果となった。すなわち、本発明の第一の解決課
題さえも満たす事ができなかった。(Lamination Example 17) Each test was conducted in the same manner as in Lamination Example 1, except that as the lower and upper aqueous coating compositions, the formulation examples 1 and 14 in which the synthetic resin emulsions were non-crosslinked were used. It was As shown in Table 6, since both of them are non-crosslinked, dents were generated in the asphalt followability test, and the hardness of the upper layer surface was insufficient, resulting in very poor wear resistance. That is, even the first problem to be solved by the present invention could not be satisfied.

【００７５】（積層例１８） 下層の水性塗料組成物として配合例１を用い、上層の水
性塗料組成物として、合成樹脂エマルションのＴｇが本
発明の規定する範囲より低い配合例１８を用いた以外
は、積層例１と同様に各試験を行った。結果は表６に示
したように上層表面の硬度が不十分となり、耐摩耗性に
非常に劣る結果となった。すなわち、本発明の第一の解
決課題さえも満たす事ができなかった。(Lamination Example 18) Other than using Formulation Example 1 as the lower layer aqueous coating composition, and using as the upper layer aqueous coating composition, Formulation Example 18 in which the Tg of the synthetic resin emulsion was lower than the range specified by the present invention. In the same manner as in Stacking Example 1, each test was performed. As a result, as shown in Table 6, the hardness of the upper layer surface was insufficient, resulting in very poor wear resistance. That is, even the first problem to be solved by the present invention could not be satisfied.

【００７６】[0076]

【００７７】（積層例１９） 下層の水性塗料組成物としてポリマーセメント系フィラ
ーを用い、上層の水性塗料組成物として配合例４を用い
た以外は、積層例１と同様に各試験を行った。結果は表
６に示したように、ポリマーセメントが硬いため、アス
ファルト追従性試験において塗膜の割れを生じ、本発明
の第一の解決課題さえも満たす事ができなかった。ま
た、下層のポリマーセメント系フィラー層の表面が荒い
ためこて塗り時に筋跡を生じた。また、低温時にはセメ
ントの硬化反応が不十分な為、ポリマーセメント系フィ
ラー層の基材への付着力が弱くなり、下層の表面に型材
を貼り付けて上層を塗装し、その後型材を除去した際に
下層が剥離してしまった。さらに、水中への浸漬を行っ
た場合は、目地部分に白くエフロレッセンスを発生し、
外観を損ねてしまった。(Lamination Example 19 ) Each test was carried out in the same manner as in Lamination Example 1 except that a polymer cement filler was used as the lower layer aqueous coating composition and Formulation Example 4 was used as the upper layer aqueous coating composition. As shown in Table 6, since the polymer cement was hard, the coating film cracked in the asphalt followability test, and even the first problem to be solved by the present invention could not be satisfied. Further, since the surface of the lower polymer cement-based filler layer was rough, streaks were generated during trowel application. In addition, because the hardening reaction of the cement is insufficient at low temperature, the adhesion of the polymer cement filler layer to the base material becomes weak, and when the mold material is attached to the surface of the lower layer and the upper layer is painted, then the mold material is removed. The lower layer has peeled off. Furthermore, when immersed in water, white efflorescence is generated in the joints,
I lost the appearance.

【表４】 [Table 4]

【表５】 [Table 5]

【表６】 [Table 6]

【００７８】[0078]

【発明の効果】本発明は、溶剤形塗り床材に含有され
る、有害な揮発性有機化合物の含有量が比較的少なく、
従来の溶剤形や無溶剤形の場合のような、最適塗膜を得
るための配合比率への注意を必要とはしない、一液で常
温硬化可能な水性の塗り床材である。さらに、塗装下地
がアスファルトのような比較的柔らかいものの場合で
も、下地に追従できるとともに、塗膜表面の耐摩耗性等
の強度は十分有している。また、水の蒸発を必然とする
水性塗材の硬化機構により、低温時の反応性の遅さや、
水分蒸発による肉痩せを原因とするクラックの発生等の
問題を解決し、凹凸の激しい床面において第一層により
平滑面を形成し、第二層によって耐摩耗性に優れる表面
を形成する床面被覆施工方法である。また、第二層の施
工に際し、型材を用いて凹凸模様を形成する場合におい
ても、型材と第一層表面との隙間に第二層の水性塗料組
成物がにじみ込まないような状態となっているため、凸
部境界部の稜線が明確でシャープな凸部模様を形成する
ことが可能であるという効果がある。The present invention has a relatively low content of harmful volatile organic compounds contained in solvent-type floor coverings.
It is a water-based floor coating that can be cured at room temperature with a single liquid, which does not require attention to the compounding ratio for obtaining an optimum coating film as in the conventional solvent type and solventless type. Further, even if the coating base is a relatively soft one such as asphalt, it can follow the base and has sufficient strength such as abrasion resistance of the coating film surface. Also, due to the curing mechanism of the water-based coating material that requires water evaporation, slow reactivity at low temperature,
A floor surface that solves problems such as the occurrence of cracks due to thinning due to water evaporation, and forms a smooth surface with a first layer and a surface with excellent wear resistance with a second layer on a highly uneven floor surface. It is a coating method. Further, in the case of forming the unevenness pattern using the mold material during the construction of the second layer, the water-based coating composition of the second layer does not permeate into the gap between the mold material and the surface of the first layer. Therefore, there is an effect that it is possible to form a sharp convex pattern in which the ridgeline of the convex boundary portion is clear.

Claims (3)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】アスファルトに対し、 １．ａ．ガラス転移温度（以下、「Ｔｇ」という。）が
−２０〜１０℃の合成樹脂エマルションの固形分１００
重量部に対して、ｃ．繊維長５〜３０μｍ、繊維径０．
０５〜１μｍの無機質繊維を５〜１０重量部、ｄ．粒径
が４５〜２５０μｍの無機質粉体を１００〜２００重量
部含有し、顔料容積濃度（以下、「ＰＶＣ」という。）
が３０〜５０％の水性塗料組成物Ａを第一層として膜厚
０．５〜１０ｍｍとなるように塗装し、 ２．第一層が乾燥後に、続いてその表面に、ｂ．Ｔｇが
０〜２０℃の架橋形合成樹脂エマルションの固形分１０
０重量部に対して、ｃ．繊維長５〜３０μｍ、繊維径
０．０５〜１μｍの無機質繊維を５〜１０重量部、ｅ．
粒径が０．５〜４５μｍのものと４５〜１０００μｍの
ものを重量比率１：５〜１：１５で混合した無機質粉粒
体を１５０〜３００重量部含有し、ＰＶＣが４０〜６０
％の水性塗料組成物Ｂを第二層として膜厚０．１〜３ｍ
ｍとなるように塗装することを特徴とする床被覆用水性
塗料組成物の施工方法。1.For asphalt, 1. a. Glass transition temperature (hereinafter referred to as "Tg")
Solid content of synthetic resin emulsion at −20 to 10 ° C. 100
With respect to parts by weight, c. Fiber length 5 to 30 μm, fiber diameter 0.
5 to 10 parts by weight of an inorganic fiber of 05 to 1 μm, d. Particle size
100-200 weight of inorganic powder of 45-250 μm
Part, and the pigment volume concentration (hereinafter referred to as "PVC").
Of 30 to 50% of water-based coating composition A as the first layer
Paint so that it is 0.5 to 10 mm, 2. After the first layer has dried, then on its surface, b. Tg
Solid content of crosslinked synthetic resin emulsion at 0 to 20 ° C. 10
0 parts by weight, c. Fiber length 5 to 30 μm, fiber diameter
5 to 10 parts by weight of 0.05 to 1 μm inorganic fiber, e.
Particle size of 0.5-45 μm and 45-1000 μm
Inorganic powder granules that are mixed in a weight ratio of 1: 5 to 1:15
Containing 150-300 parts by weight of body, PVC 40-60
% Aqueous coating composition B as a second layer having a film thickness of 0.1 to 3 m
Water-based floor coating, characterized by being painted to m
A method for applying a coating composition. 【請求項２】無機質繊維がセピオライトであることを特
徴とする請求項１に記載の床被覆用水性塗料組成物の施
工方法。2. The method for applying an aqueous coating composition for floor coating according to claim 1, wherein the inorganic fiber is sepiolite. 【請求項３】水性塗料組成物Ａを塗装し、塗膜が乾燥し
た後に型材を貼り、その後、水性塗料組成物Ｂを塗装
し、塗装直後又は塗膜が乾燥した後に型材を除去するこ
とを特徴とする請求項１又は請求項２に記載の床被覆用
水性塗料組成物の施工方法。3. A method of applying an aqueous coating composition A, applying a mold material after the coating film is dried, and then applying an aqueous coating composition B, and removing the mold material immediately after coating or after the coating film is dried. The method for applying the water-borne coating composition for floor coating according to claim 1 or 2, which is characterized.