JP7011397B2 - Paint composition - Google Patents
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Description
本発明は、塗料組成物に関し、特には、低臭気で、乾燥性に優れる非水系の常温乾燥型塗料組成物に関するものである。 The present invention relates to a coating composition, and more particularly to a non-aqueous room temperature drying type coating composition having a low odor and excellent drying property.
建築物の内外装用塗料は、有機溶剤系塗料から水系塗料まで幅広く使用されている。塗料業界としては、作業環境等の改善の面から水系塗料への移行が多く提案されているものの、建築物を対象とするような塗装については、塗装作業性や乾燥性等の点から有機溶剤系塗料が使用される場合も多い。ここで、有機溶剤系塗料が持つ問題の一つに、有機溶剤による臭気の問題があり、このような問題に対処する有機溶剤系塗料の検討が行われている。 Paints for interior and exterior of buildings are widely used from organic solvent-based paints to water-based paints. Although the paint industry has proposed many shifts to water-based paints in terms of improving the work environment, etc., for paintings that target buildings, organic solvents are used in terms of painting workability and dryness. In many cases, paints are used. Here, one of the problems of the organic solvent-based paint is the problem of odor due to the organic solvent, and an organic solvent-based paint for dealing with such a problem is being studied.
国際公開第２００５／０００９７９号（特許文献１）は、（Ａ）エポキシ樹脂、ウレタン樹脂およびアクリル樹脂からなる群から選ばれた少なくとも１種の塗料用樹脂、（Ｂ）低臭気性有機溶剤、（Ｃ）炭素数８以上のエステルおよび／またはラクトンからなる群から選ばれた少なくとも１種の化合物、および、必要により（Ｄ）塗料用樹脂（Ａ）用の硬化剤を含んでなり、有機溶剤としてキシレンおよびトルエンを実質的に含まないことを特徴とする低臭気性溶剤型塗料組成物を記載しており、これによって、塗膜乾燥後に発生するペイント臭が著しく抑制されるとしている。特許文献１に記載の塗料組成物は、キシレンやトルエンを実質的に使用しないという特徴により低臭気を達成していると思われるが、これら臭気の原因となる溶剤に代えて、酢酸ブチルと他の有機溶剤からなる（Ｂ）低臭気性有機溶剤を用いると共に、臭気中和性のある化合物（Ｃ）を用いることを特徴としている。 International Publication No. 2005/000979 (Patent Document 1) describes at least one paint resin selected from the group consisting of (A) epoxy resin, urethane resin and acrylic resin, (B) low odor organic solvent, (1). C) At least one compound selected from the group consisting of esters and / or lactones having 8 or more carbon atoms, and optionally (D) a curing agent for a paint resin (A), as an organic solvent. A low-odor solvent-type paint composition characterized by substantially free of xylene and toluene is described, which is said to significantly suppress the paint odor generated after the coating material is dried. The coating composition described in Patent Document 1 seems to have achieved a low odor due to the feature that it does not substantially use xylene or toluene, but instead of the solvent that causes these odors, butyl acetate and others are used. It is characterized in that (B) a low odor organic solvent composed of the above organic solvent is used, and a compound (C) having an odor neutralizing property is used.
一方、建築物の内外装用塗料には、常温乾燥型のものが望ましい。例えば、特開２００６－１８８６３９号公報（特許文献２）は、（Ａ）第三種有機溶剤と、（Ｂ）該有機溶剤（Ａ）に可溶で、水酸基価が５ｍｇＫＯＨ／ｇを超え、かつ水酸基価と酸価の合計が３０ｍｇＫＯＨ／ｇを超える水酸基含有含フッ素共重合体とからなる硬化型含フッ素塗料用組成物を記載しており、これによって、室温でも充分な乾燥硬化性を示し、耐溶剤性、耐水性、耐候性等に優れ、環境に配慮した含フッ素塗料用組成物を提供することができるとしている。 On the other hand, it is desirable that the paint for the interior and exterior of the building is a room temperature dry type. For example, Japanese Patent Application Laid-Open No. 2006-188639 (Patent Document 2) is soluble in (A) a third-class organic solvent and (B) the organic solvent (A), has a hydroxyl value of more than 5 mgKOH / g, and has a hydroxyl value of more than 5 mgKOH / g. Described is a composition for a curable fluorine-containing paint comprising a hydroxyl group-containing fluorine-containing copolymer having a total hydroxyl value and acid value of more than 30 mgKOH / g, whereby sufficient dry curability is exhibited even at room temperature. It is said that it is possible to provide a composition for a fluorine-containing paint that is excellent in solvent resistance, water resistance, weather resistance, etc. and is environmentally friendly.
しかしながら、特許文献１に記載の塗料組成物は、キシレンやトルエンを実質的に使用しないという点で臭気を抑えているものの、使用される有機溶媒等による強い臭気は認められ、依然として改善の余地がある。また、特許文献１は、専ら加熱硬化型塗料について記載するものであり、常温乾燥型塗料としての十分な検討は行われていない。 However, although the coating composition described in Patent Document 1 suppresses the odor in that it does not substantially use xylene or toluene, a strong odor due to the organic solvent used or the like is recognized, and there is still room for improvement. be. Further, Patent Document 1 only describes a heat-curable paint, and has not been sufficiently studied as a room temperature dry paint.
また、特許文献２に記載の塗料組成物は、室温でも充分な乾燥硬化性を示すと共に環境に配慮した有機溶媒として第三種有機溶剤を使用しているが、特許文献２に挙げられる第三種有機溶剤の使用は臭気の問題に対処できるものではない。 Further, the coating composition described in Patent Document 2 exhibits sufficient drying curability even at room temperature and uses a third-class organic solvent as an environmentally friendly organic solvent. The use of seed organic solvents cannot address the problem of odor.
そこで、本発明の目的は、上記従来技術の問題を解決し、低臭気で、乾燥性に優れる非水系の常温乾燥型塗料組成物を提供することにある。 Therefore, an object of the present invention is to solve the above-mentioned problems of the prior art and to provide a non-aqueous room temperature drying type coating composition having a low odor and excellent drying property.
本発明者は、上記目的を達成するために鋭意検討した結果、特定の蒸気圧を有する有機溶剤と、該有機溶剤に分散又は溶解可能な樹脂とを組み合わせることで、低臭気で、乾燥性に優れる非水系の常温乾燥型塗料組成物を提供できることを見出し、本発明を完成させるに至った。 As a result of diligent studies to achieve the above object, the present inventor combines an organic solvent having a specific vapor pressure with a resin that can be dispersed or dissolved in the organic solvent to achieve low odor and dryness. We have found that we can provide an excellent non-aqueous room temperature dry coating composition, and have completed the present invention.
即ち、本発明の塗料組成物は、有機溶剤（Ａ）及び樹脂（Ｂ）を含み、該有機溶剤（Ａ）は、２０℃における蒸気圧が１０～１２０Ｐａである有機溶剤（Ａ１）を９０質量％以上含み、該樹脂（Ｂ）は、該有機溶剤（Ａ）に分散可能な樹脂及び該有機溶剤（Ａ）に溶解可能な樹脂のうち少なくとも一方の樹脂からなることを特徴とする。 That is, the coating composition of the present invention contains an organic solvent (A) and a resin (B), and the organic solvent (A) contains 90 mass of the organic solvent (A1) having a vapor pressure of 10 to 120 Pa at 20 ° C. The resin (B) is characterized by containing at least one of a resin dispersible in the organic solvent (A) and a resin soluble in the organic solvent (A).
本発明の塗料組成物の好適例においては、水分量が１．０質量％未満である。 In a preferred example of the coating composition of the present invention, the water content is less than 1.0% by mass.
本発明の塗料組成物の他の好適例においては、前記樹脂（Ｂ）が、重量平均分子量が８００～３００，０００である樹脂（Ｂ１）を５０質量％以上含む。 In another preferred example of the coating composition of the present invention, the resin (B) contains 50% by mass or more of the resin (B1) having a weight average molecular weight of 800 to 300,000.
本発明の塗料組成物の他の好適例においては、常温乾燥型塗料組成物である。 Another preferred example of the coating composition of the present invention is a room temperature drying type coating composition.
本発明の塗料組成物によれば、低臭気で、乾燥性に優れる非水系の常温乾燥型塗料組成物を提供することができる。 According to the coating composition of the present invention, it is possible to provide a non-aqueous room temperature drying type coating composition having a low odor and excellent drying property.
以下に、本発明の塗料組成物を詳細に説明する。本発明の塗料組成物は、有機溶剤（Ａ）及び樹脂（Ｂ）を含み、該有機溶剤（Ａ）は、２０℃における蒸気圧が１０～１２０Ｐａである有機溶剤（Ａ１）を９０質量％以上含み、該樹脂（Ｂ）は、該有機溶剤（Ａ）に分散可能な樹脂及び該有機溶剤（Ａ）に溶解可能な樹脂のうち少なくとも一方の樹脂からなることを特徴とする。 Hereinafter, the coating composition of the present invention will be described in detail. The coating composition of the present invention contains an organic solvent (A) and a resin (B), and the organic solvent (A) contains 90% by mass or more of the organic solvent (A1) having a vapor pressure of 10 to 120 Pa at 20 ° C. The resin (B) is characterized by comprising at least one of a resin dispersible in the organic solvent (A) and a resin soluble in the organic solvent (A).
本発明の塗料組成物は、２０℃における蒸気圧が１０～１２０Ｐａである有機溶剤（Ａ１）を９０質量％以上含む有機溶剤（Ａ）を含むため、常温乾燥型塗料組成物として好適であり、基材への塗装後に常温にて乾燥させて塗膜を形成させることが可能である。ここでいう「常温」とは５～３５℃であり、本発明の塗料組成物によれば、２３℃の場合、２４時間以内、５℃の場合でも、４８時間以内という短時間での乾燥も可能である。 Since the coating composition of the present invention contains an organic solvent (A) containing 90% by mass or more of an organic solvent (A1) having a vapor pressure of 10 to 120 Pa at 20 ° C., it is suitable as a room temperature drying type coating composition. After coating on the substrate, it can be dried at room temperature to form a coating film. The "normal temperature" here is 5 to 35 ° C., and according to the coating composition of the present invention, drying can be performed in a short time of 24 hours or less at 23 ° C. or 48 hours or less even at 5 ° C. It is possible.
また、本発明の塗料組成物は、２０℃における蒸気圧が１０～１２０Ｐａである有機溶剤（Ａ１）を９０質量％以上含む有機溶剤（Ａ）を含むため、有機溶剤系（換言すれば非水系）の塗料組成物として使用可能である。ここでいう「有機溶剤系塗料組成物」とは、塗料組成物中に含まれる溶媒全体に占める有機溶剤の割合が５０質量％以上である塗料組成物を意味する。特に、本発明の塗料組成物は、良好な乾燥性を確保する観点から、水分量は１．０質量％未満であることが好ましい。なお、水分量とは、塗料組成物中における水の含有量を指す。 Further, since the coating composition of the present invention contains an organic solvent (A) containing 90% by mass or more of an organic solvent (A1) having a vapor pressure of 10 to 120 Pa at 20 ° C., it is an organic solvent type (in other words, a non-aqueous type). ) Can be used as a coating composition. The term "organic solvent-based paint composition" as used herein means a paint composition in which the proportion of the organic solvent in the total solvent contained in the paint composition is 50% by mass or more. In particular, the coating composition of the present invention preferably has a water content of less than 1.0% by mass from the viewpoint of ensuring good drying properties. The water content refers to the content of water in the coating composition.
本発明の塗料組成物に用いる有機溶剤（Ａ）には、アルコール類、エーテル類、ケトン類、エステル類（ラクトンを含む）、窒素含有化合物（アミド、ラクタムなど）、硫黄含有化合物、炭化水素（脂肪族炭化水素、脂環式炭化水素、芳香族炭化水素など）等の公知の塗料用溶剤が使用できるが、本発明の塗料組成物においては、有機溶剤（Ａ）を構成する溶剤の９０質量％以上、好ましくは９３質量％以上、より好ましくは９５質量％以上、最も好ましくは１００質量％が、２０℃における蒸気圧が１０～１２０Ｐａの有機溶剤（Ａ１）である。これらの有機溶剤の中でも、樹脂（Ｂ）や後述する硬化剤を分散又は溶解させる観点から、酸素含有化合物（例えばアルコール類、エーテル類、ケトン類、エステル類など）が特に好ましい。なお、有機溶剤は、単独で用いてもよく、二種以上を組み合わせて用いてもよい。本発明の塗料組成物中において、有機溶剤（Ａ）の含有量は、例えば１５～９０質量％であることが好ましい。 The organic solvent (A) used in the coating composition of the present invention includes alcohols, ethers, ketones, esters (including lactones), nitrogen-containing compounds (amide, lactam, etc.), sulfur-containing compounds, and hydrocarbons (including lactones). Known paint solvents such as aliphatic hydrocarbons, alicyclic hydrocarbons, aromatic hydrocarbons, etc.) can be used, but in the paint composition of the present invention, 90 mass of the solvent constituting the organic solvent (A) is used. % Or more, preferably 93% by mass or more, more preferably 95% by mass or more, most preferably 100% by mass, is an organic solvent (A1) having a vapor pressure of 10 to 120 Pa at 20 ° C. Among these organic solvents, oxygen-containing compounds (for example, alcohols, ethers, ketones, esters, etc.) are particularly preferable from the viewpoint of dispersing or dissolving the resin (B) and the curing agent described later. The organic solvent may be used alone or in combination of two or more. In the coating composition of the present invention, the content of the organic solvent (A) is preferably, for example, 15 to 90% by mass.
本発明の塗料組成物において、有機溶剤（Ａ１）は、２０℃における蒸気圧が１０～１２０Ｐａである。本発明者は、塗料組成物の溶媒として蒸気圧の低い物質を用いた場合、乾燥時に塗料組成物やその塗膜から発生し得る臭気を感じ難いことを見出した。本発明の塗料組成物によれば、２０℃における蒸気圧が１２０Ｐａ以下である有機溶剤を用いるため、塗料組成物やその塗膜からの臭気を抑えることができる。また、臭気低減効果の観点から、２０℃における蒸気圧は１２０Ｐａ以下が好ましく、１００Ｐａ以下が更に好ましい。一方、常温乾燥で有機溶剤を蒸発させる観点から、２０℃における有機溶剤（Ａ１）の蒸気圧は１０Ｐａ以上であり、５０Ｐａ以上が好ましい。 In the coating composition of the present invention, the organic solvent (A1) has a vapor pressure of 10 to 120 Pa at 20 ° C. The present inventor has found that when a substance having a low vapor pressure is used as the solvent of the coating composition, it is difficult to feel the odor that may be generated from the coating composition or the coating film thereof at the time of drying. According to the coating composition of the present invention, since an organic solvent having a vapor pressure of 120 Pa or less at 20 ° C. is used, the odor from the coating composition and its coating film can be suppressed. Further, from the viewpoint of the odor reducing effect, the vapor pressure at 20 ° C. is preferably 120 Pa or less, more preferably 100 Pa or less. On the other hand, from the viewpoint of evaporating the organic solvent by drying at room temperature, the vapor pressure of the organic solvent (A1) at 20 ° C. is 10 Pa or more, preferably 50 Pa or more.
２０℃における蒸気圧が１０～１２０Ｐａである有機溶剤（Ａ１）の具体例としては、ｎ－オクタノール、エチルヘキシルアルコール、３－メトキシ－３－メチルブタノール、３－メトキシ－３－メチルブチルアセテート、２－メチル－１，３－プロパンジオール、ジメチルプロピレングリコール、エチレングリコールモノブチルエーテル、エチレングリコールモノブチルエーテルアセテート、エチレングリコールモノイソブチルエーテル、エチレングリコールモノヘキシルエーテル、エチレングリコールジエチルエーテル、ジエチレングリコールモノメチルエーテル、ジエチレングリコールエチルメチルエーテル、ジエチレングリコールジエチルエーテル、ジエチレングリコールブチルメチルエーテル、ジエチレングリコールイソプロピルメチルエーテル、プロピレングリコールモノブチルエーテル、プロピレングリコールモノブチルエーテルアセテート、ジプロピレングリコールモノプロピルエーテル、ジプロピレングリコールジメチルエーテル、トリエチレングリコールジメチルエーテル、Ｎ－メチル－２－ピロリドン、イソパラフィン系炭化水素等が挙げられる。これら溶剤は、単独で用いてもよく、二種以上を組み合わせて用いてもよい。 Specific examples of the organic solvent (A1) having a vapor pressure at 20 ° C. of 10 to 120 Pa include n-octanol, ethylhexyl alcohol, 3-methoxy-3-methylbutanol, 3-methoxy-3-methylbutyl acetate, 2-. Methyl-1,3-propanediol, dimethylpropylene glycol, ethylene glycol monobutyl ether, ethylene glycol monobutyl ether acetate, ethylene glycol monoisobutyl ether, ethylene glycol monohexyl ether, ethylene glycol diethyl ether, diethylene glycol monomethyl ether, diethylene glycol ethylmethyl ether, Diethylene glycol diethyl ether, diethylene glycol butyl methyl ether, diethylene glycol isopropyl methyl ether, propylene glycol monobutyl ether, propylene glycol monobutyl ether acetate, dipropylene glycol monopropyl ether, dipropylene glycol dimethyl ether, triethylene glycol dimethyl ether, N-methyl-2-pyrrolidone, Examples thereof include isoparaffin-based hydrocarbons. These solvents may be used alone or in combination of two or more.
本発明の塗料組成物は、溶媒として有機溶剤（Ａ）を含むことから、本発明の塗料組成物に用いる樹脂（Ｂ）は、該有機溶剤（Ａ）に分散可能な樹脂及び該有機溶剤（Ａ）に溶解可能な樹脂のうち少なくとも一方の樹脂からなる。ここで、「有機溶剤（Ａ）に分散可能な樹脂」とは、有機溶剤（Ａ）中に分布して不均質系（例えば乳濁液又は懸濁液）を形成可能な樹脂である。また、「有機溶剤（Ａ）に溶解可能な樹脂」とは、有機溶剤（Ａ）に可溶な樹脂を指すが、有機溶剤（Ａ）との混合物が均一な溶液を形成する。 Since the coating composition of the present invention contains an organic solvent (A) as a solvent, the resin (B) used in the coating composition of the present invention is a resin dispersible in the organic solvent (A) and the organic solvent (the organic solvent (A). It consists of at least one of the resins soluble in A). Here, the "resin dispersible in the organic solvent (A)" is a resin that can be distributed in the organic solvent (A) to form an inhomogeneous system (for example, an emulsion or a suspension). Further, the "resin soluble in the organic solvent (A)" refers to a resin soluble in the organic solvent (A), and the mixture with the organic solvent (A) forms a uniform solution.
本発明の塗料組成物においては、上記樹脂（Ｂ）が、重量平均分子量が８００～３００，０００である樹脂（Ｂ１）を含むことが好ましい。上記特定した範囲内の分子量であれば、本発明の塗料組成物に用いる有機溶剤（Ａ）への分散性や溶解性と良好な塗膜物性（乾燥性、耐水性など）を両立することができる。また、樹脂（Ｂ１）の重量平均分子量は９００～１００，０００であることが更に好ましい。本発明において、重量平均分子量は、ゲル浸透クロマトグラフィーで測定した値であり、標準物質にはポリスチレンが使用される。 In the coating composition of the present invention, the resin (B) preferably contains a resin (B1) having a weight average molecular weight of 800 to 300,000. If the molecular weight is within the specified range, it is possible to achieve both dispersibility and solubility in the organic solvent (A) used in the coating composition of the present invention and good coating film physical properties (drying property, water resistance, etc.). can. Further, the weight average molecular weight of the resin (B1) is more preferably 900 to 100,000. In the present invention, the weight average molecular weight is a value measured by gel permeation chromatography, and polystyrene is used as a standard material.
本発明の塗料組成物において、上記樹脂（Ｂ）中に占める樹脂（Ｂ１）の割合は５０質量％以上であることが好ましく、８０質量％以上であることが更に好ましい。上記樹脂（Ｂ）中に占める樹脂（Ｂ１）の割合が５０質量％以上であれば、上記特定した範囲の分子量によって奏される効果を高めることができる。 In the coating composition of the present invention, the proportion of the resin (B1) in the resin (B) is preferably 50% by mass or more, more preferably 80% by mass or more. When the ratio of the resin (B1) to the resin (B) is 50% by mass or more, the effect produced by the molecular weight in the specified range can be enhanced.
本発明の塗料組成物に用いる樹脂（Ｂ）としては、塗料業界において通常使用されている樹脂を例示することができ、具体的には、アクリル樹脂、シリコーン樹脂、アクリルシリコーン樹脂、スチレンアクリル共重合樹脂、ポリエステル樹脂、ふっ素樹脂、ロジン樹脂、石油樹脂、クマロン樹脂、フェノール樹脂、ウレタン樹脂、メラミン樹脂、尿素樹脂、エポキシ樹脂、セルロース樹脂、キシレン樹脂、アルキド樹脂、脂肪族炭化水素樹脂、ブチラール樹脂、マレイン酸樹脂、フマル酸樹脂、ビニル樹脂、アミン樹脂、ケチミン樹脂等が挙げられる。これらの中でも、アクリル樹脂、シリコーン樹脂、アクリルシリコーン樹脂、ふっ素樹脂、ウレタン樹脂、エポキシ樹脂及びアルキド樹脂が好ましく、アクリル樹脂、シリコーン樹脂、ふっ素樹脂及びエポキシ樹脂が更に好ましく、アクリル樹脂、アクリルシリコーン樹脂、スチレンアクリル共重合樹脂、ふっ素樹脂、エポキシ樹脂及びアルキド樹脂が特に好ましい。これら樹脂は、単独で用いてもよく、二種以上を組み合わせて用いてもよい。 As the resin (B) used in the coating composition of the present invention, a resin usually used in the coating industry can be exemplified, and specifically, an acrylic resin, a silicone resin, an acrylic silicone resin, and a styrene acrylic copolymer. Resin, polyester resin, fluorine resin, rosin resin, petroleum resin, kumaron resin, phenol resin, urethane resin, melamine resin, urea resin, epoxy resin, cellulose resin, xylene resin, alkyd resin, aliphatic hydrocarbon resin, butyral resin, Examples thereof include maleic acid resin, fumaric acid resin, vinyl resin, amine resin, ketimine resin and the like. Among these, acrylic resin, silicone resin, acrylic silicone resin, fluorine resin, urethane resin, epoxy resin and alkyd resin are preferable, acrylic resin, silicone resin, fluorine resin and epoxy resin are more preferable, and acrylic resin, acrylic silicone resin, A styrene acrylic copolymer resin, a fluororesin, an epoxy resin and an alkyd resin are particularly preferable. These resins may be used alone or in combination of two or more.
本発明の塗料組成物において、不揮発分中における樹脂（Ｂ）の含有量は、例えば２０～１００質量％であることが好ましく、また、塗料組成物が顔料等を更に含む場合は２０～９８質量％であることが好ましい。ここで、不揮発分とは、水や有機溶剤等の揮発する成分を除いた成分を指し、最終的に塗膜を形成することになる成分であるが、本発明においては、塗料組成物を１３０℃で６０分間乾燥させた際に残存する成分を不揮発分として取り扱う。本発明の塗料組成物において、不揮発分の含有量は、１０～８５質量％であることが好ましい。 In the coating composition of the present invention, the content of the resin (B) in the non-volatile content is preferably, for example, 20 to 100% by mass, and when the coating composition further contains a pigment or the like, the content is 20 to 98% by mass. % Is preferable. Here, the non-volatile component refers to a component excluding volatile components such as water and an organic solvent, and is a component that will eventually form a coating film. In the present invention, the coating composition is 130. The components remaining after drying at ° C for 60 minutes are treated as non-volatile components. In the coating composition of the present invention, the non-volatile content is preferably 10 to 85% by mass.
本発明の塗料組成物は、顔料を含むことができる。本発明に使用できる顔料としては、特に限定されるものではなく、塗料業界において通常使用されている顔料を使用できる。具体例としては、二酸化チタン、酸化鉄、カーボンブラック等の着色顔料、シリカ、タルク、マイカ、炭酸カルシウム、硫酸バリウム等の体質顔料、亜鉛、リン酸亜鉛、リン酸アルミニウム、トリポリリン酸アルミニウム、モリブデン酸亜鉛、メタホウ酸バリウム、ハイドロカルマイト等の防錆顔料、アルミニウム、ニッケル、クロム、錫、銅、銀、白金、金、ステンレス、ガラスフレーク等の光輝顔料等が挙げられる。これら顔料は、単独で用いてもよく、二種以上を組み合わせて用いてもよい。本発明の塗料組成物において、不揮発分中における顔料の含有量は、例えば１～８０質量％であることが好ましい。 The coating composition of the present invention may contain a pigment. The pigment that can be used in the present invention is not particularly limited, and a pigment that is usually used in the paint industry can be used. Specific examples include coloring pigments such as titanium dioxide, iron oxide and carbon black, extender pigments such as silica, talc, mica, calcium carbonate and barium sulfate, zinc, zinc phosphate, aluminum phosphate, aluminum tripolyphosphate and molybdate. Examples thereof include rust preventive pigments such as zinc, barium metaborate, and hydrocarbumite, and bright pigments such as aluminum, nickel, chromium, tin, copper, silver, platinum, gold, stainless steel, and glass flakes. These pigments may be used alone or in combination of two or more. In the coating composition of the present invention, the content of the pigment in the non-volatile content is preferably, for example, 1 to 80% by mass.
本発明の塗料組成物は、硬化剤を含むことができる。本発明に使用できる硬化剤としては、使用する樹脂の種類に応じて適宜選択され、塗料業界において通常使用されている硬化剤を使用できる。これら硬化剤は、単独で用いてもよく、二種以上を組み合わせて用いてもよい。硬化剤の含有量は、樹脂に含まれる硬化剤との反応性基の量に応じて適宜調整されるものであるが、本発明の塗料組成物において、不揮発分中における硬化剤の含有量は、例えば０．５～１５質量％であることが好ましい。
例えば、水酸基を含むような樹脂（水酸基含有アクリル樹脂、水酸基含有アクリルシリコーン樹脂及び水酸基含有ふっ素樹脂など）に対しては、イソシアネート系硬化剤が好適に使用できる。具体例としては、トリレンジイソシアネート、４，４’－ジフェニルメタンジイソシアネート、キシリレンジイソシアネート、ヘキサメチレンジイソシアネート、４，４’－メチレンビス（シクロヘキシルイソシアネート）、メチルシクロヘキサンジイソシアネート、ビス（イソシアネートメチル）シクロヘキサン、イソホロンジイソシアネート、ダイマー酸ジイソシアネート、リジンジイソシアネート等の他、これらポリイソシアネートの変性体が挙げられる。変性体の具体例としては、ビウレット変性体、イソシアヌレート変性体、アダクト変性体（例えばトリメチロールプロパン付加物）、アロファネート変性体、ウレトジオン変性体等が挙げられる。
また、エポキシ樹脂に対しては、アミン系硬化剤が好適に使用できる。具体例としては、エチレンジアミン、トリメチレンジアミン、テトラメチレンジアミン、ペンタメチレンジアミン、トリアミノプロパン、ジエチレントリアミン、トリエチレンテトラミン、テトラエチレンペンタミン、イソホロンジアミン、及び１，３－ビスアミノメチルシクロヘキサン等の脂肪族ポリアミン；フェニレンジアミン、メタキシリレンジアミン、パラキシリレンジアミン、及びジアミノジフエニルメタン等の芳香族ポリアミン；ポリオキシエチレンジアミン、ポリオキシプロピレンジアミン、トリエチレングリコールジアミン、及びトリプロピレングリコールジアミン等の他のポリアミン化合物と、これらアミン化合物のアミノ基を変性してなる変性ポリアミン化合物とが挙げられる。なお、上記アミン化合物の変性には、既知の方法が利用でき、変性反応の例としては、アミノ基のアミド化、アミノ基とカルボニル化合物のマンニッヒ反応、アミノ基とエポキシ基の付加反応等が挙げられる。ここで、アミノ基にエポキシ基等が付加したタイプの変性ポリアミン化合物をアダクトタイプの変性ポリアミン化合物といい、アミノ基にエポキシ基が付加したエポキシアダクトタイプの変性ポリアミン化合物が好ましい。
The coating composition of the present invention may contain a curing agent. As the curing agent that can be used in the present invention, a curing agent that is appropriately selected according to the type of resin to be used and is usually used in the coating industry can be used. These curing agents may be used alone or in combination of two or more. The content of the curing agent is appropriately adjusted according to the amount of reactive groups with the curing agent contained in the resin, but in the coating composition of the present invention, the content of the curing agent in the non-volatile content is For example, it is preferably 0.5 to 15% by mass.
For example, an isocyanate-based curing agent can be preferably used for a resin containing a hydroxyl group (such as a hydroxyl group-containing acrylic resin, a hydroxyl group-containing acrylic silicone resin, and a hydroxyl group-containing fluororesin). Specific examples include toluene diisocyanate, 4,4'-diphenylmethane diisocyanate, xylylene diisocyanate, hexamethylene diisocyanate, 4,4'-methylene bis (cyclohexyl isocyanate), methylcyclohexanediisocyanate, bis (isocyanatemethyl) cyclohexane, isophorone diisocyanate, In addition to diisocyanate dimerate and lysine diisocyanate, modified products of these polyisocyanates can be mentioned. Specific examples of the modified product include biuret modified product, isocyanate modified product, adduct modified product (for example, trimethylolpropane adduct), allophanate modified product, uretdione modified product and the like.
Further, for the epoxy resin, an amine-based curing agent can be preferably used. Specific examples include aliphatic groups such as ethylenediamine, trimethylenediamine, tetramethylenediamine, pentamethylenediamine, triaminopropane, diethylenetriamine, triethylenetetramine, tetraethylenepentamine, isophoronediamine, and 1,3-bisaminomethylcyclohexane. Polyamines; aromatic polyamines such as phenylenediamine, metaxylylene diamine, paraxylylene diamine, and diaminodiphenylmethane; other polyamines such as polyoxyethylenediamine, polyoxypropylenediamine, triethyleneglycoldiamine, and tripropyleneglycoldiamine. Examples thereof include compounds and modified polyamine compounds obtained by modifying the amino groups of these amine compounds. A known method can be used for the modification of the amine compound, and examples of the modification reaction include amidation of an amino group, Mannich reaction of an amino group and a carbonyl compound, and addition reaction of an amino group and an epoxy group. Be done. Here, a modified polyamine compound of the type in which an epoxy group or the like is added to an amino group is referred to as an adduct-type modified polyamine compound, and an epoxy adduct-type modified polyamine compound in which an epoxy group is added to an amino group is preferable.
本発明の塗料組成物には、その他の成分として、表面調整剤、湿潤剤、分散剤、乳化剤、増粘剤、沈降防止剤、皮張り防止剤、たれ防止剤、消泡剤、色分かれ防止剤、レベリング剤、乾燥剤、可塑剤、成膜助剤、防カビ剤、抗菌剤、殺虫剤、光安定化剤、紫外線吸収剤、帯電防止剤及び導電性付与剤等を目的に応じて適宜配合することができる。これら成分は、市販品を好適に使用することができる。 In the coating composition of the present invention, as other components, a surface conditioner, a wetting agent, a dispersant, an emulsifier, a thickener, an anti-settling agent, an anti-skinning agent, an anti-sagging agent, an antifoaming agent, and an anti-color separation agent are used. Agents, leveling agents, desiccants, plasticizers, film-forming aids, fungicides, antibacterial agents, insecticides, light stabilizers, UV absorbers, antistatic agents, conductivity-imparting agents, etc., as appropriate according to the purpose. Can be blended. Commercially available products can be preferably used for these components.
本発明の塗料組成物は、必要に応じて適宜選択される各種成分を混合することによって調製できる。また、本発明の塗料組成物が、２液型の塗料組成物である場合は、必要に応じて適宜選択される各種成分を混合することによって、主剤や硬化剤を予め用意しておき、塗装時に主剤と硬化剤とを混合することで使用される。なお、硬化剤は、硬化剤そのままでもよいし、他の成分との混合物であってもよい。 The coating composition of the present invention can be prepared by mixing various components appropriately selected as necessary. When the coating composition of the present invention is a two-component coating composition, a main agent and a curing agent are prepared in advance by mixing various components appropriately selected as necessary for coating. Sometimes used by mixing the main agent and the curing agent. The curing agent may be the curing agent as it is or may be a mixture with other components.
本発明の塗料組成物は、せん断速度０．１ｓ－１の粘度が０．１～１０，０００Ｐａ・ｓであり、且つせん断速度１，０００ｓ－１の粘度が０．０５～１０Ｐａ・ｓであることが好ましい。なお、本発明において、粘度はＴＡインスツルメンツ社製レオメーターＡＲＥＳを用い、液温を２３℃に調整した後測定される。 The coating composition of the present invention has a viscosity of 0.1 s -1 and a viscosity of 0.1 to 10,000 Pa · s, and a shear rate of 1,000 s -1 has a viscosity of 0.05 to 10 Pa · s. Is preferable. In the present invention, the viscosity is measured by using a leometer ARES manufactured by TA Instruments Co., Ltd. after adjusting the liquid temperature to 23 ° C.
本発明の塗料組成物の塗装手段は、特に限定されず、既知の塗装手段、例えば、刷毛塗装、ローラー塗装、コテ塗装、ヘラ塗装、スプレー塗装等が利用できる。 The coating means of the coating composition of the present invention is not particularly limited, and known coating means such as brush coating, roller coating, iron coating, spatula coating, spray coating and the like can be used.
また、本発明の塗料組成物により塗装できる基材としては、特に限定されるものではなく、例えば、鉄鋼、亜鉛めっき鋼（例えばトタン板）、錫めっき鋼（例えばブリキ板）、ステンレス鋼、マグネシウム合金、アルミニウム、アルミニウム合金等の金属基材、木材、石膏、珪酸カルシウム、ガラス、セラミック、コンクリート、セメント、モルタル、スレート等の無機系基材、アクリル樹脂、ポリ塩化ビニル、ポリカーボネート、ＡＢＳ樹脂、ポリエチレンテレフタレート、ポリオレフィン等のプラスチック基材が挙げられる。これらの中でも、鋼材、アルミ材、木材、石膏ボード、モルタル、軽量気泡コンクリート、木繊維補強セメント板、繊維補強セメント板、繊維補強セメント・珪酸カルシウム板等の建築基材が好適に挙げられる。金属基材には、各種表面処理、例えば酸化処理が施された基材も含まれる。また、その表面が無機物で被覆されているようなプラスチック基材（例えば、ガラス質で被覆されたプラスチック基材）は、無機系基材に含まれる。なお、基材は、プライマー処理が施されていてもよいし、基材表面の少なくとも一部に旧塗膜（本発明の塗料組成物の塗装を行う前に既に形成されている塗膜）が存在していてもよい。 The base material that can be coated with the coating composition of the present invention is not particularly limited, and is, for example, steel, zinc-plated steel (for example, galvanized iron plate), tin-plated steel (for example, tin plate), stainless steel, and magnesium. Metallic base materials such as alloys, aluminum and aluminum alloys, inorganic base materials such as wood, gypsum, calcium silicate, glass, ceramics, concrete, cement, mortar and slate, acrylic resin, polyvinyl chloride, polycarbonate, ABS resin and polyethylene. Examples thereof include plastic substrates such as terephthalate and polyolefin. Among these, building base materials such as steel, aluminum, wood, gypsum board, mortar, lightweight bubble concrete, wood fiber reinforced cement board, fiber reinforced cement board, fiber reinforced cement and calcium silicate board are preferable. The metal substrate also includes a substrate that has been subjected to various surface treatments, for example, an oxidation treatment. Further, a plastic base material whose surface is coated with an inorganic substance (for example, a plastic base material coated with a glassy substance) is included in the inorganic base material. The substrate may be primer-treated, or an old coating film (a coating film already formed before coating the coating composition of the present invention) may be applied to at least a part of the surface of the substrate. It may exist.
本発明の塗料組成物により塗装できる基材としては、上述したように各種材質の基材が挙げられるが、その具体例としては、各種建築材料の他、建築物や構築物及びそれらの部材が好適に挙げられ、本発明の塗料組成物は、建築物や構築物の内外装用の塗料として好適である。なお、本発明において、建築物とは、人間が居住又は滞在する目的で建築された構造物を意味し、例えば住宅（戸建・集合住宅など）やビル、工場等が挙げられ、構築物とは、人間が居住又は滞在する目的以外のために建設された構造物を意味し、例えば橋梁、タンク、プラント配管、煙突等が挙げられる。建築物や構築物の部材としては、例えば屋根や壁等が挙げられる。 Examples of the base material that can be coated by the coating composition of the present invention include base materials made of various materials as described above, and specific examples thereof include various building materials, buildings, structures, and their members. The paint composition of the present invention is suitable as a paint for the interior and exterior of buildings and structures. In the present invention, the building means a structure constructed for the purpose of living or staying in a human being, and examples thereof include a house (a detached house, an apartment house, etc.), a building, a factory, etc., and the structure is a structure. It means a structure constructed for purposes other than the purpose of residence or stay of human beings, and examples thereof include bridges, tanks, plant pipes, chimneys and the like. Examples of the building and the member of the structure include a roof and a wall.
以下に、実施例を挙げて本発明を更に詳しく説明するが、本発明は下記の実施例に何ら限定されるものではない。 Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to the following examples.
［樹脂の調製例］
（アクリル樹脂溶液の調製例）
攪拌機、温度計、冷却管及び窒素ガス導入管を付けた反応容器に、アイソパーＨ（安藤パラケミー株式会社製）３００質量部を仕込み１１０℃に保持し、予め調製しておいたイソブチルメタクリレート７０質量部、ｔｅｒｔ－ブチルメタクリレート２３０質量部、ラウリルメタクリレート１５０質量部及びベンゾイルパーオキサイド２質量部の混合物を、窒素雰囲気下で１１０℃を保持しながら３時間で均一滴下し、更にベンゾイルパーオキサイド３質量部を仕込み１時間１１０℃に保持し、アイソパーＨ２５０質量部を仕込み、不揮発分が４５．２質量％、重量平均分子量１４０，０００、粘度が３７Ｐ（ポイズ）、外観が無色透明なアクリル樹脂溶液（Ａ）を得た。
[Example of resin preparation]
(Preparation example of acrylic resin solution)
In a reaction vessel equipped with a stirrer, a thermometer, a cooling tube and a nitrogen gas introduction tube, 300 parts by mass of Isopar H (manufactured by Ando Parachemy Co., Ltd.) was charged and kept at 110 ° C., and 70 parts by mass of isobutyl methacrylate prepared in advance. , 230 parts by mass of tert-butyl methacrylate, 150 parts by mass of lauryl methacrylate and 2 parts by mass of benzoyl peroxide were uniformly added dropwise over 3 hours while maintaining 110 ° C. under a nitrogen atmosphere, and 3 parts by mass of benzoyl peroxide was further added. The mixture was kept at 110 ° C. for 1 hour, and 250 parts by mass of Isopar H was charged. The non-volatile content was 45.2% by mass, the weight average molecular weight was 140,000, the viscosity was 37P (poise), and the appearance was a colorless and transparent acrylic resin solution (A). Got
（アクリル樹脂分散液の調製例）
攪拌機、温度計、冷却管及び窒素ガス導入管を付けた反応容器に、上記調製例に従い得たアクリル樹脂溶液（Ａ）３３０質量部及びアイソパーＨ １５０質量部を仕込み１１０℃に保持し、予め調製しておいたメチルメタクリレート１１０質量部、エチルアクリレート４０質量部、ブチルアクリレート７０質量部、ブチルメタクリレート５０質量部、イソブチルメタクリレート４０質量部及びベンゾイルパーオキシド３質量部の混合物を、窒素雰囲気下で１１０℃を保持しながら３時間で均一滴下し、更にベンゾイルパーオキシド５質量部を仕込み１時間１１０℃に保持し、アイソパーＨ２４０質量部を仕込み、不揮発分が４４．９質量％、重量平均分子量が約１４０，０００、粘度が２７Ｐ（ポイズ）、外観が白色懸濁のアクリル樹脂分散液（Ｂ）を得た。
(Preparation example of acrylic resin dispersion)
In a reaction vessel equipped with a stirrer, a thermometer, a cooling tube and a nitrogen gas introduction tube, 330 parts by mass of the acrylic resin solution (A) and 150 parts by mass of Isopar H obtained according to the above preparation example were charged and kept at 110 ° C. to prepare in advance. A mixture of 110 parts by mass of methyl methacrylate, 40 parts by mass of ethyl acrylate, 70 parts by mass of butyl acrylate, 50 parts by mass of butyl methacrylate, 40 parts by mass of isobutyl methacrylate and 3 parts by mass of benzoyl peroxide was placed at 110 ° C. in a nitrogen atmosphere. 5 parts by mass of benzoylper oxide was charged and kept at 110 ° C. for 1 hour, 240 parts by mass of isoper H was charged, the non-volatile content was 44.9% by mass, and the weight average molecular weight was about 140. An acrylic resin dispersion (B) having a mass of 000, a mass of 27 P (poise), and a white suspension in appearance was obtained.
［塗料の調製例］
表１～２に示す配合処方に従い、主剤を調製し、塗装時に硬化剤と混合して、塗料を調製した。なお、実施例９～１０については、１液型の塗料組成物であるため、表１に示す配合処方に従い、塗料を調製した。
[Paint preparation example]
A main agent was prepared according to the formulation shown in Tables 1 and 2, and mixed with a curing agent at the time of painting to prepare a paint. Since Examples 9 to 10 are one-component paint compositions, paints were prepared according to the formulation shown in Table 1.
（注１）「ｊＥＲ １００１」：三菱化学社製、エポキシ樹脂、不揮発分１００質量％、重量平均分子量 約９００
（注２）「ルミフロンＬＦ２００Ｆ」：旭硝子社製、ふっ素樹脂、不揮発分１００質量％
（注３）「ＪＲ－８０６」：テイカ社製、酸化チタン
（注４）「Ｋ－ＷＨＩＴＥ＃８２」：テイカ社製、防錆顔料
（注５）「スーパーＳＳ」：丸尾カルシウム社製、炭酸カルシウム
（注６）「タルクＤＮ－２」：富士タルク社製、板状タルク
（注７）「ソルフィットＡＣ」：クラレ社製、３－メトキシ－３－メチル－１－ブチルアセテート、蒸気圧５３Ｐａ
（注８）「ＨｅＧ」：日本乳化剤社製、ヘキシルグリコール、蒸気圧１０Ｐａ
（注９）「ソルフィット」：クラレ社製、３－メトキシ－３－メチル－１－ブタノール、蒸気圧４７Ｐａ
（注１０）「ＤＯＷＡＮＯＬ ＰｎＢ」：ダウ社製、プロピレングリコールモノブチルエーテル、蒸気圧１１３Ｐａ
（注１１）「ハイソルブＥＤＥ」：東邦化学工業社製、ジエチレングリコールジエチルエーテル、蒸気圧５０Ｐａ
（注１２）「アイソパーＨ」：エクソンモービル社製、イソパラフィン系炭化水素、蒸気圧１００Ｐａ
（注１３）「トーマイドＴＸＫ－４３６－Ｄ」：Ｔ＆Ｋ ＴＯＫＡ社製、ポリアミドアミン、不揮発分１００質量％
（注１４）「デュラネートＴＳＡ１００」：旭化成ケミカルズ社製、ヘキサメチレンジイソシアネート変性物、不揮発分１００質量％
（注１５）「エピクロン５９２０－７０ＭＳ」：ＤＩＣ社製、アルキルフェノールノボラック型エポキシ樹脂のミネラルスピリット溶液、不揮発分７０質量％、重量平均分子量 約７０００
（注１６）「ルミフロンＬＦ８００」： 旭硝子社製、ふっ素樹脂のミネラルスピリット溶液、不揮発分６０質量％
（注１７）「キョーワノールＭ」：ＫＨネオケム社製、２，２，４－トリメチル－１，３－ペンタンジオールモノイソブチレート、蒸気圧１Ｐａ
（注１８）「ＰＥ－ＡＣ」：クラレ社製、プロピレングリコールモノエチルエーテルアセテート、蒸気圧２２７Ｐａ
（注１９）「キシレン」：丸善石油化学社製、蒸気圧９００Ｐａ
（注２０）「ＰＥＧＡＳＯＬ ＡＮ ４５ ＦＬＵＩＤ」：エクソンモービル社製、蒸気圧２８７Ｐａ
(Note 1) "jER 1001": manufactured by Mitsubishi Chemical Corporation, epoxy resin, non-volatile content 100% by mass, weight average molecular weight about 900
(Note 2) "Lumiflon LF200F": Fluororesin manufactured by Asahi Glass Co., Ltd., non-volatile content 100% by mass
(Note 3) "JR-806": manufactured by TAYCA, titanium oxide (Note 4) "K-WHITE # 82": manufactured by TAYCA, rust preventive pigment (Note 5) "Super SS": manufactured by Maruo Calcium, carbonated Calcium (Note 6) "Tark DN-2": manufactured by Fuji Tark, plate-shaped talc (Note 7) "Solfit AC": manufactured by Kuraray, 3-methoxy-3-methyl-1-butyl acetate, vapor pressure 53 Pa
(Note 8) "HeG": manufactured by Nippon Emulsor, hexyl glycol, vapor pressure 10 Pa
(Note 9) "Solfit": manufactured by Kuraray, 3-methoxy-3-methyl-1-butanol, vapor pressure 47 Pa
(Note 10) "DOWNOL PnB": Dow Inc., propylene glycol monobutyl ether, vapor pressure 113 Pa
(Note 11) "High Solve EDE": manufactured by Toho Chemical Industry Co., Ltd., diethylene glycol diethyl ether, vapor pressure 50 Pa
(Note 12) "Isopar H": ExxonMobil, isoparaffin hydrocarbon, vapor pressure 100 Pa
(Note 13) "Tomide TXK-436-D": manufactured by T & K TOKA, polyamide amine, non-volatile content 100% by mass
(Note 14) "Duranate TSA100": Asahi Kasei Chemicals Co., Ltd., hexamethylene diisocyanate modified product, non-volatile content 100% by mass
(Note 15) "Epiclon 5920-70MS": Mineral spirit solution of alkylphenol novolak type epoxy resin manufactured by DIC, non-volatile content 70% by mass, weight average molecular weight about 7000
(Note 16) "Lumiflon LF800": Fluororesin mineral spirit solution manufactured by Asahi Glass Co., Ltd., non-volatile content 60% by mass
(Note 17) "Kyowanol M": KH Neochem, 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, vapor pressure 1 Pa
(Note 18) "PE-AC": manufactured by Kuraray, propylene glycol monoethyl ether acetate, vapor pressure 227 Pa
(Note 19) "Xylene": manufactured by Maruzen Petrochemical Co., Ltd., vapor pressure 900 Pa
(Note 20) "PEGASOL AN 45 FLUID": ExxonMobil, vapor pressure 287Pa
［試験］
乾燥性及び臭気について評価した。結果を表３～４に示す。
[test]
The dryness and odor were evaluated. The results are shown in Tables 3-4.
＜乾燥性の評価方法＞
調製した塗料を各温湿度条件下において、隙間１５０μｍのフィルムアプリケータを用いてガラス板（１５０ｍｍ×７０ｍｍ×２ｍｍ）に該塗料を塗布し、ＪＩＳ Ｋ ５６００－１－１の４．３．５ｂ）の条件で、半硬化乾燥するまでの時間を測定し、下記の評価基準にて乾燥性を評価した。
（２３℃５０％ＲＨの評価基準）
◎：６時間未満
○：６時間以上、８時間未満
△：８時間以上、２４時間未満
×：２４時間以上
（２３℃８５％ＲＨの評価基準）
◎：６時間未満
○：６時間以上、８時間未満
△：８時間以上、２４時間未満
×：２４時間以上
（５℃３０％ＲＨの評価基準）
◎：１６時間未満
○：１６時間以上、３２時間未満
△：３２時間以上、４８時間未満
×：４８時間以上
<Evaluation method for dryness>
Under each temperature and humidity condition, the prepared paint was applied to a glass plate (150 mm × 70 mm × 2 mm) using a film applicator with a gap of 150 μm, and JIS K 5600-1-1 4.3.5b). The time until semi-curing and drying was measured under the above conditions, and the drying property was evaluated according to the following evaluation criteria.
(Evaluation criteria for 23 ° C and 50% RH)
⊚: less than 6 hours ○: 6 hours or more, less than 8 hours Δ: 8 hours or more, less than 24 hours ×: 24 hours or more (evaluation standard of 23 ° C. 85% RH)
⊚: less than 6 hours ○: 6 hours or more, less than 8 hours Δ: 8 hours or more, less than 24 hours ×: 24 hours or more (evaluation standard of 5 ° C. 30% RH)
⊚: less than 16 hours ○: 16 hours or more, less than 32 hours △: 32 hours or more, less than 48 hours ×: 48 hours or more
＜臭気の評価方法＞
官能評価及び臭気センサ値により、臭気の評価を行った。
（官能評価）
調製した塗料２５～３０ｇを５０ｍＬ容量のガラス瓶に移し蓋をする。開封した瓶の開口部を被験者の鼻に１０秒間近付け、臭気を評価した。なお、被験者は２０代～４０代の男性５人女性５人とし、下記の採点基準により臭気を採点し、１０人の合計点を１０で除した値を下記の評価基準に従って評価した。
＜採点基準＞
０点：ほとんど臭気を感じない
１点：僅かに臭気を感じる
２点：臭気を感じる
３点：強い臭気を感じる
＜評価基準＞
◎：１．０点未満
○：１．０点以上、１．５点未満
△：１．５点以上、２．５点未満
×：２．５点以上
（臭気センサ値）
東京都建設局（平成２６年改訂版）において提唱されている室内臭気測定試験方法（臭気測定試験器（ＣＯＳＭＯＳ社製、ＸＰ－３２９ｍＲ）を用いた臭気測定方法）に従い、塗料の臭気を測定し、下記の評価基準にて臭気を評価した。測定された数値が低いほど、臭気が低いことを示す。
◎：１２０未満
○：１２０以上、２００未満
△：２００以上、３００未満
×：３００以上
<Odor evaluation method>
The odor was evaluated by the sensory evaluation and the odor sensor value.
(sensory evaluation)
Transfer 25 to 30 g of the prepared paint to a glass bottle having a capacity of 50 mL and cover it. The opening of the opened bottle was brought close to the subject's nose for 10 seconds to evaluate the odor. The subjects were 5 males and 5 females in their 20s to 40s, and the odor was scored according to the following scoring criteria, and the value obtained by dividing the total score of the 10 subjects by 10 was evaluated according to the following evaluation criteria.
<Scoring criteria>
0 points: Almost no odor 1 point: Slight odor 2 points: Odor 3 points: Strong odor <Evaluation criteria>
⊚: less than 1.0 points ○: 1.0 points or more, less than 1.5 points △: 1.5 points or more, less than 2.5 points ×: 2.5 points or more (odor sensor value)
The odor of the paint is measured according to the indoor odor measurement test method (odor measurement method using an odor measurement tester (COSMOS, XP-329mR)) proposed by the Tokyo Metropolitan Government Construction Bureau (revised 2014). , The odor was evaluated according to the following evaluation criteria. The lower the measured value, the lower the odor.
⊚: less than 120 ○: 120 or more and less than 200 Δ: 200 or more and less than 300 ×: 300 or more
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