JP3897657B2 - Construction method of cured antibacterial polymer cement - Google Patents

Description

【００４６】
上記一般式（１）で表される環状有機リン酸エステル化合物は、上塗り材や下塗り材に含有させて硬化物の抗菌性を発現させる抗菌剤として用いるものである。上記一般式（１）で表される環状有機リン酸エステル化合物において、Ｒ₁、Ｒ₂及びＲ₃で表される炭素原子数１〜１８のアルキル基としては、メチル、エチル、プロピル、イソプロピル、ブチル、第二ブチル、第三ブチル、アミル、第三アミル、ヘキシル、オクチル、２−エチルヘキシル、イソオクチル、第三オクチル、ノニル、デシル、ドデシル、トリデシル、イソトリデシル、テトラデシル、ヘキサデシル、オクタデシル等が挙げられる。
【００４７】
また、Ｍで表されるアルカリ金属原子としては、ナトリウム、カリウム、リチウム等が挙げられ、アルカリ土類金属原子としては、カルシウム、マグネシウム、バリウム、ストロンチウム等が挙げられ、特にＭがアルカリ金属原子又は亜鉛原子であるものが、効果が大きく好ましい。
【００４８】
従って、上記一般式（１）で表される化合物の具体例としては、以下の化合物Ｎｏ．１〜Ｎｏ．８が挙げられる。
【００４９】
【化３】

【００５０】
【化４】

【００５１】
【化５】

【００５２】
【化６】

【００５３】
【化７】

【００５４】
【化８】

【００５５】
【化９】

【００５６】
【化１０】

【００５７】
また、上記環状有機リン酸エステル化合物の粒子径は５００ｎｍ以下、特に２００ｎｍ以下のものが好ましい。粒子の粒径が５００ｎｍを超えると、硬化物の表面の単位面積当りの粒子個数が少なくなり、抗菌性が低下する。
【００５８】
上記有機窒素硫黄系抗菌剤としては、メチレンビスチオシアネート等のアルキレンビスチオシアネート化合物、５−クロル−２−メチル−４−イソチアゾリン−３−オン、２−オクチル−４−イソチアゾリン−３−オン、４，５−ジクロル−２−オクチル−４−イソチアゾリン−３−オン等のイソチアゾリン化合物、クロラミンＴ、Ｎ，Ｎ−ジメチル−Ｎ'−（フルオロジクロルメチルチオ）−Ｎ'−フェニルスルファミド等のスルファミド化合物、２−（４−チオシアノメチルチオ）ベンゾチアゾール、２−メルカプトチアゾール等のチアゾール化合物、２−ピリジンチオール−１−オキシド及びその金属塩（ジンクピリチオン等）、２−（４−チアゾリル）ベンツイミダゾール、３，５−ジメチル−１，３，５−２Ｈ−テトラヒドロチアジアジン−２−チオン、Ｎ−（フルオロジクロルメチルチオ）フタルイミド、ジチオ−２，２'−ビス（ベンズメチルアミド）等が挙げられる。
【００５９】
上記有機ブロム系抗菌剤としては、２−ブロモ−２−ニトロプロパン−１，３−ジオール、１，１−ジブロモ−１−ニトロ−２−プロパノール、２，２−ジブロモ−２−ニトロエタノール、２−ブロモ−２−ニトロ−１，３−ジアセトキシプロパン、β−ブロモ−β−ニトロスチレン、５−ブロモ−５−ニトロ−１，３−ジオキサン等の有機ブロモニトロ化合物、２，２−ジブロモ−３−シアノプロピオンアミド等の有機ブロモシアノ化合物、１，２−ビス（ブロモアセトキシ）エタン、１，４−ビス（ブロモアセトキシ）−２−ブテン、ブロモアセトアミド等のブロモ酢酸化合物、ビストリブロモメチルスルホン等の有機ブロモスルホン化合物等が挙げられる。
【００６０】
上記有機窒素系抗菌剤としては、ヘキサヒドロ−１，３，５−トリエテニル−ｓ−トリアジン、ヘキサヒドロ−１，３，５−トリス（２−ヒドロキシエチル）−ｓ−トリアジン等のｓ−トリアジン化合物、Ｎ，４−ジヒドロキシ−α−オキソベンゼンエタンイミドイルクロライド、α−クロロ−ｏ−アセトキシベンゾアルドキシム等のハロゲン化オキシム化合物、トリクロロイソシアヌレート、ジクロロイソシアヌル酸ナトリウム等の塩素化イソシアヌル酸化合物、２−メチルカルボニルアミノベンツイミダゾール等のカルバミン酸化合物、１−〔２−（２，４−ジクロロフェニル）〕−２'−〔（２，４−ジクロロフェニル）メトキシ〕エチル−３−（２−フェニルエチル）−１Ｈ−イミダゾリウムクロライド等のイミダゾール化合物、２−クロロアセトアミド等のアミド化合物、Ｎ−（２−ヒドロキシプロピル）アミノメタノール、２−（ヒドロキシメチルアミノ）エタノール等のアミノアルコール化合物、２，４，５，６−テトラクロロイソフタロニトリル等のニトリル化合物が挙げられる。
【００６１】
上記のその他の抗菌剤としては、４−ヒドロキシ安息香酸メチル、安息香酸エチル、安息香酸プロピル、安息香酸イソプロピル等が挙げられる。
【００６２】
本発明の施工方法においては、これらの中でも、（Ｅ）抗菌剤として、銀系抗菌剤及び／又は上記一般式（１）で表される環状有機リン酸エステル化合物を用いるのが好ましい。
【００６３】
（Ｅ）抗菌剤は、あらかじめ（Ａ）ポリオール等の他の成分に含有させておいてもよく、他の成分とどの時点で配合してもよい。
【００６４】
上記（Ｅ）抗菌剤の添加量は、成分（Ａ）〜（Ｄ）及び（Ｆ）の合計量１００質量部に対して０．００１〜１０質量部が好ましく、特に０．００５〜５質量部が好ましい。該添加量が０．００１質量部未満では、十分な抗菌効果が得られないおそれがあり、１０質量部を超えても、効果はあまり向上せずに、経済的にも不利になる場合がある。
【００６５】
また、本発明の抗菌性ポリマーセメント硬化物の下塗り層及び上塗り層には、各々顔料をさらに配合してもよい。顔料としては、酸化鉄系顔料、チタン系顔料、青、緑系無機顔料、カーボン顔料、アゾ系顔料、フタロシアニン系顔料、縮合多環顔料等が挙げられる。酸化鉄系顔料としては、例えば、鉄黒、べんがら、亜鉛フェライト顔料等が挙げられる。チタン系顔料としては、酸化チタン、ニッケルアンチモンチタンイエロー、クロムアンチモンチタンイエロー等が挙げられる。青、緑系無機顔料としては、群青、コバルトブルー、酸化クロム、スピネルグリーン等が挙げられる。アゾ系顔料としては、例えば、レーキレッドＣ、ウォッチングレッド、ブリリアントカーミン６Ｂ等のアゾレーキ顔料、ホスタパームイエローＨ４Ｇ、ノバパームイエローＨ２Ｇ、ノバパームレッドＨＦＴ、ＰＶファストイエローＨＧ、ＰＶファストイエローＨ３Ｒ、ＰＶボルドーＨＦ３Ｒ、ＰＶカーミンＨＦ４Ｃ、ＰＶレッドＨＦ２Ｂ、ＰＶファストマルーンＨＭＦ０１、ＰＶファストブラウンＨＦＲ等のベンズイミダゾロン顔料、ジアリリドイエロー、ジアリリドオレンジ、ピラゾロンレッド、ＰＶファストイエローＨＲ等のジアリリド顔料、クロモフタルイエロー８ＧＮ、クロモフタルイエロー６Ｇ、クロモフタルイエロー３Ｇ、クロモフタルイエローＧＲ、クロモフタルオレンジ４Ｒ、クロモフタルオレンジＧＰ、クロモフタルスカーレットＲＮ、クロモフタルレッドＧ、クロモフタルレッドＢＲＮ、クロモフタルレッドＢＧ、クロモフタルレッド２Ｂ、クロモフタルブラウン５Ｒ等の縮合アゾ系顔料等が挙げられる。フタロシアニン系顔料としては、例えば、フタロシアニンブルー、フタロシアニングリーン等が挙げられる。縮合多環顔料としては、ＰＶファストピンクＥ、シンカシャレッドＢ、シンカシャレッドＹ等のキナクリドン系顔料、イルガジンイエロー２ＧＬＴ、イルガジンイエロー３ＲＬＴＮ、クロモフタルオレンジ２Ｇ等のイソインドリノン系顔料、ペリレンレッド、ペリレンマルーン、ペリレンスカーレット等のペリレン系顔料、ペリノンオレンジ等のペリノン系顔料、ジオキサジンバイオレット等のジオキサジン系顔料、フィレスタイエローＲＮ、クロモフタルレッドＡ３Ｂ、スレンブルー等のアントラキノン系顔料、パリオトールイエローＬ０９６０ＨＧ等のキノフタロン系顔料等が挙げられる。
【００６６】
また、本発明の施工方法における下塗り層及び上塗り層には、必要に応じて上記以外の成分を更に添加剤として使用することができる。該添加剤としては、硬化抑制剤や硬化促進剤等の硬化反応調整剤、つや等の外観やすべり防止等の表面状態の調整に用いられる樹脂類、発泡抑制剤、乳化剤、消泡剤、希釈剤、酸化防止剤、紫外線吸収剤、ヒンダードアミン系光安定剤等の常用の添加剤等が挙げられ、これらは各々一種類又は二種類以上混合で用いることができる。
【００６７】
上記硬化反応調整剤としては、（ポリ）アミン類、（多価）アルコール類、（多価）フェノール類、（ポリ）ヒドラジド類、有機酸類、エチレンオキサイド、プロピレンオキサイド、ジブチル錫ジラウレート、チタン酸テトラブチル、オクタン酸亜鉛、ナフテン酸亜鉛、オクタン酸第一錫、塩化第二錫、塩化第二鉄、オクタン酸鉛、オレイン酸カリウム、２−エチルヘキサン酸コバルト、Ｎ，Ｎ−ジメチルシクロヘキシルアミン、Ｎ，Ｎ−ジメチルベンジルアミン、Ｎ−エチルモルホリン、１，４−ジアザビシクロ−２，２，２−オクタン、４−ジメチルアミノピリジン、オキシプロピル化トリエタノールアミン、β−ジエチルアミノエタノール、Ｎ，Ｎ，Ｎ’，Ｎ’−テトラキス（２−ヒドロキシ）エチレンジアミン等が挙げられる。
【００６８】
上記樹脂類としては、キシレン樹脂、エポキシ樹脂、ウレタン樹脂等が挙げられる。
上記発泡抑制剤としては、酸化カルシウム、酸化マグネシウム、酸化バリウム、水酸化ナトリウム、水酸化カリウム、水酸化リチウム、水酸化カルシウム、水酸化バリウム、水酸化マグネシウム、水酸化カドミウム、珪酸カルシウム、珪酸バリウム、珪酸ナトリウム、水酸化鉛、塩基性酢酸鉛、（ポリ）シロキサン、（ポリ）アルキルシロキサン、（ポリ）ジアルキルシロキサン等が挙げられる。
【００６９】
上記乳化剤としては、使用される（Ａ）ポリオールの分散安定性を補助し、混合時に巻き込まれる空気を微細化する効果が得られる。該乳化剤としては、ノニオン性界面活性剤、アニオン性界面活性剤、カチオン性界面活性剤、両性界面活性剤、高分子系界面活性剤、反応性界面活性剤等を使用することができる。これらの中でも、特にノニオン性界面活性剤が好ましく使用される。
上記乳化剤の配合量は、ポリオール１００質量部に対して、０．０１〜１０質量部が好ましく、０．１〜５質量部がより好ましい。
【００７０】
上記ノニオン性界面活性剤としては、エーテル型として、ポリオキシエチレンアルキルエーテル、ポリオキシエチレンアルキルフェニルエーテル、アルキルアリルホルムアルデヒド縮合ポリオキシエチレンエーテル、ポリオキシエチレンオキシプロピレンブロックポリマー、ポリオキシエチレンポリオキシプロピレンアルキルエーテル、ポリオキシエチレンテルペンフェニルエーテルが挙げられ、エーテルエステル型として、グリセリンエステルのポリオキシエチレンエーテル、ソルビタンエステルのポリオキシエチレンエーテル、ソルビトールエステルのポリオキシエチレンエーテルが挙げられ、エステル型として、ポリオキシエチレンロジン酸エステル、ポリエチレングリコール脂肪酸エステル、グリセリンエステル、ポリグリセリンエステル、ソルビタンエステル、プロピレングリコールエステル、ショ糖エステルが挙げられ、含窒素型として、脂肪酸アルカノールアミド、ポリオキシエチレン脂肪酸アミド、ポリオキシエチレンアルキルアミン等が挙げられる。
【００７１】
上記ポリオキシエチレンアルキルエーテルは、炭素数８〜２５の直鎖又は分岐の第１級又は第２級アルコールに１〜２００モルのエチレンオキサイドを付加反応させて製造され、使用されるアルコールとしては、具体的には、オクチルアルコール、デシルアルコール、ラウリルアルコール、ミリスチルアルコール、セチルアルコール、ステアリルアルコール、オレイルアルコール、ベヘニルアルコール等の第１級アルコール、２−ドデカノール、２−テトラデカノール、２−ヘキサデンカノール、２−オクチルドデカノール等の第２級アルコール、やし油還元アルコール、牛脂還元アルコール、マッコー（抹香）アルコール等の天然アルコール等が挙げられる。また、上記ポリオキシエチレンアルキルフェニルエーテルは、炭素数１〜２０のアルキル基が置換されているフェノールに１〜２００モルのエチレンオキサイドを付加反応させて製造され、使用されるアルキルフェノールとしては、具体的には、ノニルフェノール、オクチルフェノール、ドデシルフェノール、オクチルクレゾール、クミルフェノール等が挙げられる。
【００７２】
上記消泡剤としては、シリコーン系消泡剤等が挙げられる。
上記希釈剤としては、高沸点芳香族炭化水素化合物、各種エポキシ樹脂用希釈剤、ジカルボン酸ジエステル、パラフィン系炭化水素化合物等が挙げられる。
【００７３】
上記酸化防止剤としては、フェノール系酸化防止剤、リン系酸化防止剤、チオエーテル系酸化防止剤が挙げられる。
上記フェノール系酸化防止剤としては、例えば、２，６−ジ第三ブチル−ｐ−クレゾール、２，６−ジフェニル−４−オクタデシロキシフェノール、ジステアリル（３，５−ジ第三ブチル−４−ヒドロキシベンジル）ホスホネート、１，６−ヘキサメチレンビス〔（３，５−ジ第三ブチル−４−ヒドロキシフェニル）プロピオン酸アミド〕、４，４’−チオビス（６−第三ブチル−ｍ−クレゾール）、２，２’−メチレンビス（４−メチル−６−第三ブチルフェノール）、２，２’−メチレンビス（４−エチル−６−第三ブチルフェノール）、４，４’−ブチリデンビス（６−第三ブチル−ｍ−クレゾール）、２，２’−エチリデンビス（４，６―ジ第三ブチルフェノール）、２，２’−エチリデンビス（４−第二ブチル−６−第三ブチルフェノール）、１，１，３−トリス（２−メチル−４−ヒドロキシ−５−第三ブチルフェニル）ブタン、１，３，５−トリス（２，６−ジメチル−３−ヒドロキシ−４−第三ブチルベンジル）イソシアヌレート、１，３，５−トリス（３，５−ジ第三ブチル−４−ヒドロキシベンジル）イソシアヌレート、１，３，５−トリス（３，５−ジ第三ブチル−４−ヒドロキシベンジル）−２，４，６−トリメチルベンゼン、２−第三ブチル−４−メチル−６−（２−アクリロイルオキシ−３−第三ブチル−５−メチルベンジル）フェノール、ステアリル（３，５−ジ第三ブチル−４−ヒドロキシフェニル）プロピオネート、テトラキス〔３−（３，５−ジ第三ブチル−４−ヒドロキシフェニル）プロピオン酸メチル〕メタン、チオジエチレングリコールビス〔（３，５−ジ第三ブチル−４−ヒドロキシフェニル）プロピオネート〕、１，６−ヘキサメチレンビス〔（３，５−ジ第三ブチル−４−ヒドロキシフェニル）プロピオネート〕、ビス〔３，３−ビス（４−ヒドロキシ−３−第三ブチルフェニル）ブチリックアシッド〕グリコールエステル、ビス〔２−第三ブチル−４−メチル−６−（２−ヒドロキシ−３−第三ブチル−５−メチルベンジル）フェニル〕テレフタレート、１，３，５−トリス〔（３，５−ジ第三ブチル−４−ヒドロキシフェニル）プロピオニルオキシエチル〕イソシアヌレート、３，９−ビス〔１，１−ジメチル−２−｛（３−第三ブチル−４−ヒドロキシ−５−メチルフェニル）プロピオニルオキシ｝エチル〕−２，４，８，１０−テトラオキサスピロ〔５，５〕ウンデカン、トリエチレングリコールビス〔（３−第三ブチル−４−ヒドロキシ−５−メチルフェニル）プロピオネート〕等が挙げられる。
【００７４】
上記リン系酸化防止剤としては、例えば、トリスノニルフェニルホスファイト、トリス〔２−第三ブチル−４−（３−第三ブチル−４−ヒドロキシ−５−メチルフェニルチオ）−５−メチルフェニル〕ホスファイト、トリデシルホスファイト、オクチルジフェニルホスファイト、ジ（デシル）モノフェニルホスファイト、ジ（トリデシル）ペンタエリスリトールジホスファイト、ジ（ノニルフェニル）ペンタエリスリトールジホスファイト、ビス（２，４−ジ第三ブチルフェニル）ペンタエリスリトールジホスファイト、ビス（２，６−ジ第三ブチル−４−メチルフェニル）ペンタエリスリトールジホスファイト、ビス（２，４，６−トリ第三ブチルフェニル）ペンタエリスリトールジホスファイト、ビス（２，４−ジクミルフェニル）ペンタエリスリトールジホスファイト、テトラ（トリデシル）イソプロピリデンジフェノールジホスファイト、テトラ（トリデシル）−４，４’−ｎ−ブチリデンビス（２−第三ブチル−５−メチルフェノール）ジホスファイト、ヘキサ（トリデシル）−１，１，３−トリス（２−メチル−４−ヒドロキシ−５−第三ブチルフェニル）ブタントリホスファイト、テトラキス（２，４−ジ第三ブチルフェニル）ビフェニレンジホスホナイト、９，１０−ジハイドロ−９−オキサ−１０−ホスファフェナンスレン−１０−オキサイド、２，２’−メチレンビス（４，６−第三ブチルフェニル）−２−エチルヘキシルホスファイト、２，２’−メチレンビス（４，６−第三ブチルフェニル）−オクタデシルホスファイト、２，２’−エチリデンビス（４，６−ジ第三ブチルフェニル）フルオロホスファイト、トリス（２−〔（２，４，８，１０−テトラキス第三ブチルジベンゾ〔ｄ，ｆ〕〔１，３，２〕ジオキサホスフェピン−６−イル）オキシ〕エチル）アミン、２−エチル−２−ブチルプロピレングリコールと２，４，６−トリ第三ブチルフェノールのホスファイト等が挙げられる。
【００７５】
上記チオエーテル系酸化防止剤としては、例えば、チオジプロピオン酸ジラウリル、チオジプロピオン酸ジミリスチル、チオジプロピオン酸ジステアリル等のジアルキルチオジプロピオネート類及びペンタエリスリトールテトラ（β−アルキルメルカプトプロピオン酸エステル類が挙げられる。
【００７６】
上記紫外線吸収剤としては、例えば、２，４−ジヒドロキシベンゾフェノン、２−ヒドロキシ−４−メトキシベンゾフェノン、２−ヒドロキシ−４−オクトキシベンゾフェノン、５，５’−メチレンビス（２−ヒドロキシ−４−メトキシベンゾフェノン）等の２−ヒドロキシベンゾフェノン類；２−（２’−ヒドロキシ−５’−メチルフェニル）ベンゾトリアゾール、２−（２’−ヒドロキシ−３’，５’−ジ第三ブチルフェニル）−５−クロロベンゾトリアゾ−ル、２−（２’−ヒドロキシ−３’−第三ブチル−５’−メチルフェニル）−５−クロロベンゾトリアゾ−ル、２−（２’−ヒドロキシ−５’−第三オクチルフェニル）ベンゾトリアゾ−ル、２−（２’−ヒドロキシ−３’，５’−ジクミルフェニル）ベンゾトリアゾ−ル、２，２’−メチレンビス（４−第三オクチル−６−（ベンゾトリアゾリル）フェノール）、２−（２’−ヒドロキシ−３’−第三ブチル−５’−カルボキシフェニル）ベンゾトリアゾール等の２−（２’−ヒドロキシフェニル）ベンゾトリアゾール類；フェニルサリシレート、レゾルシノールモノベンゾエート、２，４−ジ第三ブチルフェニル−３，５−ジ第三ブチル−４−ヒドロキシベンゾエート、２，４−ジ第三アミルフェニル−３，５−ジ第三ブチル−４−ヒドロキシベンゾエート、ヘキサデシル−３，５−ジ第三ブチル−４−ヒドロキシベンゾエート等のベンゾエート類；２−エチル−２’−エトキシオキザニリド、２−エトキシ−４’−ドデシルオキザニリド等の置換オキザニリド類；エチル−α−シアノ−β，β−ジフェニルアクリレート、メチル−２−シアノ−３−メチル−３−（ｐ−メトキシフェニル）アクリレート等のシアノアクリレート類；２−（２−ヒドロキシ−４−オクトキシフェニル）−４，６−ビス（２，４−ジ第三ブチルフェニル）−ｓ−トリアジン、２−（２−ヒドロキシ−４−メトキシフェニル）−４，６−ジフェニル−ｓ−トリアジン、２−（２−ヒドロキシ−４−プロポキシ−５−メチルフェニル）−４，６−ビス（２，４−ジ第三ブチルフェニル）−ｓ−トリアジン等のトリアリールトリアジン類が挙げられる。
【００７７】
上記ヒンダードアミン系光安定剤としては、例えば、２，２，６，６−テトラメチル−４−ピペリジルステアレート、１，２，２，６，６−ペンタメチル−４−ピペリジルステアレート、２，２，６，６−テトラメチル−４−ピペリジルベンゾエート、ビス（２，２，６，６−テトラメチル−４−ピペリジル）セバケート、ビス（１，２，２，６，６−テトラメチル−４−ピペリジル）セバケート、ビス（１−オクトキシ−２，２，６，６−テトラメチル−4 −ピペリジル）セバケート、テトラキス（２，２，６，６−テトラメチル−４−ピペリジル）−１，２，３，４−ブタンテトラカルボキシレート、テトラキス（１，２，２，６，６−ペンタメチル−４−ピペリジル）−１，２，３，４−ブタンテトラカルボキシレート、ビス（２，２，６，６−テトラメチル−４−ピペリジル）・ジ（トリデシル）−１，２，３，４−ブタンテトラカルボキシレート、ビス（１，２，２，６，６−ペンタメチル−４−ピペリジル）・ジ（トリデシル）−１，２，３，４−ブタンテトラカルボキシレート、ビス（１，２，２，４，４−ペンタメチル−４−ピペリジル）−２−ブチル−２−（３，５−ジ第三ブチル−４−ヒドロキシベンジル）マロネート、１−（２−ヒドロキシエチル）−２，２，６，６−テトラメチル−４−ピペリジノ−ル／コハク酸ジエチル重縮合物、１，６−ビス（２，２，６，６−テトラメチル−４−ピペリジルアミノ）ヘキサン／２，４−ジクロロ−６−モルホリノ−ｓ−トリアジン重縮合物、１，６−ビス（２，２，６，６−テトラメチル−４−ピペリジルアミノ）ヘキサン／２，４−ジクロロ−６−第三オクチルアミノ−ｓ−トリアジン重縮合物、１，５，８，１２−テトラキス〔２，４−ビス（Ｎ−ブチル−Ｎ−（２，２，６，６−テトラメチル−４−ピペリジル）アミノ）−ｓ−トリアジン−６−イル〕−１，５，８，１２−テトラアザドデカン、１，５，８，１２−テトラキス〔２，４−ビス（Ｎ−ブチル−Ｎ−（１，２，２，６，６−ペンタメチル−４−ピペリジル）アミノ）−ｓ−トリアジン−６−イル〕−１，５，８−１２−テトラアザドデカン、１，６，１１−トリス〔２，４−ビス（Ｎ−ブチル−Ｎ−（２，２，６，６−テトラメチル−４−ピペリジル）アミノ）−ｓ−トリアジン−６−イル〕アミノウンデカン、１，６，１１−トリス〔２，４−ビス（Ｎ−ブチル−Ｎ−（１，２，２，６，６−ペンタメチル−４−ピペリジル）アミノ）−ｓ−トリアジン−６−イル〕アミノウンデカン等のヒンダードアミン化合物が挙げられる。
【００７８】
上記酸化防止剤、紫外線吸収剤及びヒンダードアミン系光安定剤はそれぞれ、本発明の施工方法における下塗り材又は上塗り材各々１００質量部に対して、好ましくは０．００１〜１０質量部、さらに好ましくは０．０５〜５質量部用いられる。
【００７９】
本発明の施工方法における下塗り材及び上塗り材の各組成物は、例えば、（Ａ）ポリオールと（Ｂ）水との混合物に、必要に応じて乳化剤、希釈剤、硬化反応調整剤等をあらかじめ分散させて懸濁液を製造し、該懸濁液に（Ｃ）イソシアネート化合物、（Ｄ）セメント成分、（Ｅ）抗菌剤及び（Ｆ）骨材、必要に応じてその他添加剤を混合して製造することができる。
【００８０】
本発明の施工方法における上塗り層は、（Ｆ）骨材の種類によって、上塗り層表面を平滑仕上げ又はノンスリップ仕上げにすることが出来る。例えば、平滑仕上げの場合は、骨材として比較的粒径の小さい珪砂を使用し、ノンスリップ仕上げの場合は、珪砂のほかに粉砕セラミック等の粒径の異なる骨材を混合する。ノンスリップ仕上げの場合、あらかじめ原料の中にこれらの骨材を含有させて施工する方法もあるが、上塗り層を塗布した直後に上塗り層表面に骨材を直接散布する方法もある。
【００８１】
本発明の施工方法は、床材、床仕上げ材、壁材、壁仕上げ材等の施工に用いられ、中でも床材、床仕上げ材等の床の施工に好適であり、特に衛生面を重要視する、医療関連施設、食品製造工場、調理場、保育所、幼稚園、老人ホーム等において好適に用いられる。本発明の施工方法は、特に、コンクリート、セメントモルタル、各種金属等で構成される硬質の床面に適したもの、即ち硬質の床仕上材の施工に特に好適に用いられるものであり、塗布する前に下地をきれいに整地し、また、金属面へ塗布する場合には、下地を脱脂、脱錆、研磨等の処理を施した後に塗布することが好ましい。
【００８２】
本発明の施工方法において、上塗り材及び下塗り材の塗布方法については特に制限されることはなく、周知一般の方法を用いることができる。例えば、セメントミキサーや強制へらミキサー等で混合した後、ローラー塗り、こて塗り、注入、吹きつけ等の方法により塗布される。
【００８３】
【実施例】
以下に本発明の実施例等を示すが、本発明はこれらに限定されるものではない。
下記製造例１〜３は、本発明の施工方法における上塗り材及び下塗り材に用いられるエポキシ開環ポリオールの製造例を示す。下記実施例１−１〜１−７は、本発明の施工方法の実施例を示し、下記比較例１−１は、抗菌剤を含有しない上塗り材を用いた施工方法の実施例を示し、下記比較例１−２は、上塗り層のみを設ける施工方法の実施例を示す。
【００８４】
〔製造例１〕ポリオールＮｏ．１の製造
系内を窒素置換した１リットルの反応用フラスコに、酸価０．７ｍｇＫＯＨ／ｇ、粘度２７００ｍＰ・ｓ（２５℃）のエポキシ化合物である４−ｔ−ブチルフェニルグリシジルエーテル（アデカレジンＥＤ−５０９：旭電化工業（株）製）２４５ｇ、及びひまし油脂肪酸（ＣＯ−ＦＡ：伊藤製油（株）製）４４７ｇを仕込み、窒素気流下で１００℃まで加熱した。これにエチルトリフェニルホスホニウムブロミドを、エポキシ化合物の仕込量とひまし油脂肪酸の仕込量との和の０．０３質量％加え、４時間反応させ、酸価０．８ｍｇＫＯＨ／ｇ、粘度１６０ｍＰ・ｓ（２５℃）のポリオールＮｏ．１を得た。
【００８５】
〔製造例２〕ポリオールＮｏ．２の製造
４−ｔ−ブチルフェニルグリシジルエーテル（アデカレジンＥＤ−５０９：旭電化工業（株）製）２４５ｇに代えて、４−メチルフェニルグリシジルエーテル（アデカレジンＥＤ−５２９：旭電化工業（株）製）２７０ｇを用いた以外は、製造例１と同様の方法により、ポリオールＮｏ．２を得た。得られたポリオールＮｏ．２は、酸価０．５ｍｇＫＯＨ／ｇ、粘度７５０ｍＰ・ｓ（２５℃）であった。
【００８６】
〔製造例３〕ポリオールＮｏ．３の製造
４−ｔ−ブチルフェニルグリシジルエーテル（アデカレジンＥＤ−５０９：旭電化工業（株）製）２４５ｇに代えて、２−フェノキシイソプロピルグリシジルエーテル（アデカレジンＥＤ−５０１：旭電化工業（株）製）４５０ｇを用いた以外は、製造例１と同様の方法により、ポリオールＮｏ．３を得た。得られたポリオールＮｏ．３は、酸価１．０ｍｇＫＯＨ／ｇ、粘度４４０ｍＰ・ｓ（２５℃）であった。
【００８７】
上記製造例１〜３それぞれにおいて得られたポリオールＮｏ．１〜３のいずれかを４２．６質量部、乳化剤（アデカトールＬＡ−８７５：旭電化工業（株）社製、ポリ（オキシエチレン）アルキルエーテル）を０．６質量部、希釈剤としてＳＡＳ−２９６（日本石油（株）社製）を１７．５質量部、硬化反応調整剤としてベンジルアルコールを３．５質量部、及びＥＤＰ−３００（エチレンジアミンのプロピレンオキシド４モル付加物：反応調整剤）を０．８質量部仕込んだ後、水３５質量部を少量ずつ添加しながらホモミキサーで４０００ｒｐｍの回転数で１０分間撹拌してａ原料を得た。
但し、ポリオールＮｏ．１を含有させたａ原料をａ−１、ポリオールＮｏ．２を含有させたａ原料をａ−２、ポリオールＮｏ．３を含有させたａ原料をａ−３とした。
【００８８】
〔実施例１及び比較例１〕抗菌性ポリマーセメント硬化物の施工
抗菌性ポリマーセメント硬化物を以下のようにして施工した。
下塗り層：表１及び２に記載の上塗り層に用いたものと同じａ原料１００質量部及び硬化剤としてポリイソシアネート化合物（ｃ−ＭＤＩ）１００質量部を配合し、２０秒間混合した後、粉体Ｆ−１（白セメント１０４質量部、５号珪砂２７２質量部、消石灰８質量部、炭酸カルシウム８質量部及び酸化クロム８質量部の混合物）４００質量部を加え、均一に混合し、組成物（下塗り材）を得た。該下塗り材を、金コテを用いてコンクリート平板（６００×３６０×５０ｍｍ）に１ｍｍの厚さで塗布し、下塗り層とした。下塗り材を塗布して１０時間養生した後、上塗り工程に移った。
上塗り層：表１及び２に記載のａ原料を１００質量部及び硬化剤としてポリイソシアネート化合物（ｃ−ＭＤＩ）を１００質量部配合し、混合した後、あらかじめ混合した粉体Ｆ−２（白セメント１３０質量部、５号珪砂３４０質量部、消石灰１０質量部、炭酸カルシウム１０質量部及び酸化クロム１０質量部の混合物）５００質量部、さらに抗菌剤を表１及び２に記載の通り加えて混合し、組成物（上塗り材）を得た。該上塗り材を、金コテを用いて３ｍｍの厚さになるように下塗り層の上に塗り重ね、硬化させて、二層からなる抗菌性ポリマーセメント硬化物を有するコンクリート平板を得た。
上記のポリマーセメント硬化物の施工における上塗り材を塗布する際の施工性を評価し、また、得られた抗菌性ポリマーセメント硬化物を有するコンクリート平板について、塗膜外観の観察を行い、かつ下記の＜抗菌試験Ｉ＞及び＜抗菌試験II＞を行なった。
【００８９】
＜抗菌試験Ｉ＞
試験は、黄色ブドウ球菌、大腸菌、緑膿菌及び黒かびについてそれぞれ行なった。
抗菌性ポリマーセメント硬化物を有するコンクリート平板から４０×４０×５ｍｍの形状に切り出し、前処理として蒸留水に５時間浸漬後、乾燥処理し、硬化物試験体とした。
黄色ブドウ球菌、大腸菌及び緑膿菌については、上記硬化物試験体上に菌培養液を塗布し、ポリエチレン製のラップフィルムを密着させ、３５℃、２４時間静止保存した後、試験片及びポリエチレンフィルムの菌液を洗い流し、ＳＣＤＬＰ寒天培地を用いて混釈平板培養法により生残菌数を測定した。但し、各々の初期菌数は１．０×１０⁵〜２．５×１０⁵個／ｇの範囲に調整した。
また、黒かびについては、ＪＩＳ Ｚ ２９１１に準拠して、胞子懸濁液を調製し、硬化物試験体上に該胞子懸濁液スプレーして２９℃で培養した後、かびの生育を観察し、下記（評価基準）に従って評価した。
【００９０】
（評価基準）
０：肉眼及び顕微鏡下でかびの発育は認められない。
１：肉眼ではかびの発育は認められないが、顕微鏡下では認められる。
２：菌糸の発育はわずかで、発育部分の面積は試験体の全面積の２５％未満。
３：菌糸の発育は中程度で、発育部分の面積は試験体の全面積の２５％以上５０％未満。
４：菌糸はよく発育し、発育部分の面積は試験体の５０％以上１００％以下。
５：菌糸の発育は激しく試験体全体を覆っている。
【００９１】
＜抗菌試験II＞
また、下記（キャスター試験）を実施後、上記抗菌試験Ｉと同様の方法で抗菌試験IIを行った。ただし、抗菌試験IIにおいては、黄色ブドウ球菌、大腸菌及び緑膿菌について試験を行なった。
（キャスター試験）
ＤＩＮ５４３２４床材疲労試験に準じ、抗菌性ポリマーセメント硬化物を有するコンクリート平板を試験機のターンテーブルにセットし、１２０ｋｇで加圧したゴム製キャスター（外径７５ｍｍ、幅２０ｍｍ）３個を該コンクリート平板に接触させ、ターンテーブル１回転を１サイクルとし、１００００サイクルを行なった。
【００９２】
上塗り材の施工性、塗膜外観の観察結果並びに抗菌試験Ｉ及びIIの結果を下記表１及び２に示す。
【００９３】
【表１】

【００９４】
【表２】

【００９５】
表１及び２の結果から明らかなように、本発明の施工方法によれば、塗布する際の施工性に優れ、かつ塗膜表面の外観及び抗菌性に優れることが確認できた。これに対し、下塗り層を塗布しないで上塗り層のみ塗布した場合は、塗布が困難であり、かつ塗膜表面の外観が不良であった。また、抗菌剤を上塗り層に含有させない場合は、表面の抗菌性に劣ることが確認された。
【００９６】
【発明の効果】
本発明の抗菌性ポリマーセメント硬化物の施工方法は、塗布施工性に優れ、かつ表面の抗菌性に優れた硬化物を与えることのできるものである。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a method for constructing a cured antibacterial polymer cement, and more particularly to a method for constructing a cured antibacterial polymer cement that can be suitably used particularly for hard flooring.
[0002]
[Prior art and problems to be solved by the invention]
The urethane resin used as a hard flooring material has high flexibility and excellent curability at low temperatures, but has a problem of insufficient antibacterial properties.
[0003]
For example, in humid places such as kitchens, bathrooms and washstands, or in places where humidity is likely to increase, such as futons and beds, bacteria and straws can easily grow and become unsanitary. Particularly in recent years, since the airtightness of buildings is high and air conditioning is popular, it has become a suitable breeding environment for bacteria and sputum, and microorganisms can grow throughout the year. Microorganisms usually propagate not only in humid places, but also in living rooms, causing serious problems in hygiene such as food poisoning, atopic skin diseases and other allergic symptoms.
[0004]
In particular, hygiene demands are increasing in medical facilities, food manufacturing factories, kitchens, nurseries, kindergartens, nursing homes and the like.
[0005]
Under such circumstances, a composition having excellent antibacterial properties is also required for a composition used as a raw material for floor paint or flooring.
[0006]
Japanese Unexamined Patent Publication No. 2000-72512 discloses a laminated structure in which the undercoat layer is made of polymer cement containing no aggregate and the overcoat layer is made of polymer cement containing aggregate. Although the laminated structure is excellent in acid resistance, alkali resistance, heat resistance, impact resistance, etc., it has a problem in antibacterial performance especially when used on the floor of food factories and hospitals.
[0007]
Therefore, the objective of this invention is providing the construction method of the polymer cement hardened | cured material which is excellent in antibacterial property.
[0008]
[Means for Solving the Problems]
The present invention relates to a laminated structure comprising a base, an undercoat layer provided on the base surface, and an overcoat layer provided on the surface of the undercoat layer. (A) Polyol, (B) Water, (C) Polyisocyanate compound And (D) a cement component, and if necessary, a composition containing (E) an antibacterial agent and / or (F) an aggregate is applied to the base and cured to provide an undercoat layer, and (A) a polyol. (B) water, (C) a polyisocyanate compound, (D) a cement component and (E) an antibacterial agent, and if necessary, a composition containing (F) aggregate is applied to the surface of the undercoat layer. The above-mentioned object is achieved by a method of applying a cured antibacterial polymer cement, which is cured to provide an overcoat layer.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the construction method of the present invention will be described in detail.
[0010]
In the construction method of the antibacterial polymer cement cured product of the present invention, first, it contains (A) polyol, (B) water, (C) polyisocyanate compound and (D) cement component, and further (E ) A composition containing an antibacterial agent and / or (F) aggregate (hereinafter referred to as an undercoat material) is applied to a base and cured to provide an undercoat layer. The undercoat layer functions as an undercoat agent, and the thickness of the undercoat layer is preferably 0.5 mm or more, more preferably 0.5 to 2 mm, and most preferably 0.8 to 1.5 mm. By doing so, it is possible to shield the base moisture from being pushed up, and to eliminate pinholes and blisters on the surface layer.
After providing the above-mentioned undercoat layer, after sufficiently curing and confirming that it has been cured, (A) polyol, (B) water, (C) polyisocyanate compound, (D) cement component and (E) antibacterial A composition containing an agent and further containing (F) an aggregate (hereinafter referred to as an overcoat material) is applied to the surface of the undercoat layer and cured as necessary to provide an overcoat layer. The thickness of the overcoat layer is preferably 2.0 to 20 mm, particularly preferably 2.5 to 10 mm. If the thickness of the overcoat layer is less than 2.0 mm, the impact resistance is insufficient, the aggregate protrudes from the surface of the coating film, and a smooth surface appearance cannot be obtained, and it is preferable because trowels and uneven coating occur. Absent.
[0016]
  Moreover, as (A) polyol, the epoxy ring-opening polyol obtained by making an epoxy compound and active hydrogen reactUsingThe
  (A) A compound having a carboxyl group is used as the active hydrogen compound to be reacted with the epoxy compound in order to obtain an epoxy ring-opening polyol that can be used as a polyol.
  As the compound having a carboxyl group, a polyol having excellent characteristics can be obtained when castor oil fatty acid is used.
[0017]
Examples of the epoxy compound include a monoepoxy type epoxy compound having one epoxy group and a polyepoxy type epoxy compound having two or more epoxy groups.
Examples of monoepoxy type epoxy compounds include α-olefin oxides such as ethylene oxide, propylene oxide, butylene oxide, 1,4-butylene oxide; cyclohexene oxide; epichlorohydrin; glycidol; allyl glycidyl ether, methyl glycidyl ether, butyl glycidyl ether, Glycidyl ether compounds of monovalent aliphatic alcohols such as 2-ethylerhexyl glycidyl ether, lauryl glycidyl ether, phenoxypropyl glycidyl ether; phenol, 4-methylphenol, 4-tert-butylphenol, 2,4-ditert-butylphenol, etc. A glycidyl ether compound of a monohydric phenol compound; a glycidyl ester compound of an aliphatic carboxylic acid or an aromatic carboxylic acid Commercially available products include, for example, Adekaglycidol ED-501, ED-502, ED-509, ED-518, ED-529 (trade names, all manufactured by Asahi Denka Kogyo Co., Ltd.), and Epiol A, Epiol B, Epiol OH, Epiol P, Epiol M, Epiol EH, Blemmer G (trade names, all manufactured by NOF Corporation), Cardura E10 (manufactured by Shell Chemical Co., Ltd.), and the like.
[0018]
Examples of the polyepoxy type epoxy compound include polyglycidyl ether compounds of mononuclear polyhydric phenol compounds such as hydroquinone, resorcin, pyrocatechol, and phloroglucinol; dihydroxynaphthalene, biphenol, methylene bisphenol (bisphenol F), methylene bis ( Orthocresol), ethylidene bisphenol, isopropylidene bisphenol (bisphenol A), isopropylidene bis (orthocresol), tetrabromobisphenol A, 1,3-bis (4-hydroxycumylbenzene), 1,4-bis (4- Hydroxycumylbenzene), 1,1,3-tris (4-hydroxyphenyl) butane, 1,1,2,2-tetra (4-hydroxyphenyl) ethane, thiobisphenol, sulfur Polyglycidyl ether compounds of polynuclear polyhydric phenol compounds such as bisphenol, oxybisphenol, phenol novolak, orthocresol novolak, ethylphenol novolak, butylphenol novolak, octylphenol novolak, resorcin novolak, terpene diphenol; ethylene glycol, propylene glycol, butylene glycol , Hexanediol, polyglycol, thiodiglycol, glycerin, trimethylolpropane, pentaerythritol, sorbitol, polyglycidyl ethers of polyhydric alcohols such as bisphenol A-ethylene oxide adduct; maleic acid, fumaric acid, itaconic acid, succinic acid , Glutaric acid, suberic acid, adipic acid, azelaic acid, sebacic acid, dimer acid, Limeric acid, phthalic acid, isophthalic acid, terephthalic acid, trimellitic acid, trimesic acid, pyromellitic acid, tetrahydrophthalic acid, hexahydrophthalic acid, endomethylenetetrahydrophthalic acid, etc. Homopolymer or copolymer of glycidyl esters of acid and glycidyl methacrylate; epoxy having glycidylamino group such as N, N-diglycidylaniline, bis (4- (N-methyl-N-glycidylamino) phenyl) methane Examples thereof include compounds and vinylcyclohexene dioxide. Examples of commercially available products include ADEKA GLYCIROL ED-503, ED-506, ED-513, ED-523, ED-612, ED-505, ED-507, ADEKA RESIN EP-4000, EP-4005, EP-4085. EP-4000S, EP-4080S, EP-4085S (trade names, all manufactured by Asahi Denka Kogyo Co., Ltd.) and the like.
[0024]
When the epoxy ring-opening polyol is obtained, the reaction ratio between the epoxy compound and the active hydrogen compound is such that the number of active hydrogens relative to the epoxy group is preferably 0.7 to 1.1, more preferably 0.8. The ratio is 9 to 1.0.
[0025]
If the number of active hydrogens relative to the epoxy group is less than 0.7, a large amount of unreacted epoxy groups will remain in the epoxy ring-opening polyol. The active hydrogen compound remains, which is not only useless but also may adversely affect the properties of the coating when a cured coating is formed.
[0026]
As a method for adding the active hydrogen compound to the epoxy compound, a usual method can be employed. For example, both are added at 60 to 200 ° C. in the presence of a known catalyst such as a tertiary amine compound or a phosphonium salt. Can be used for 3 to 10 hours.
[0028]
Examples of the (C) polyisocyanate compound used in the undercoat layer and the overcoat layer in the construction method of the present invention include aliphatic, alicyclic and aromatic polyisocyanates, trifunctional or higher polyisocyanates, and other modified polyisocyanates. It is done.
[0029]
Examples of the aliphatic polyisocyanate include tetramethylene diisocyanate, 1,6-hexamethylene diisocyanate (HDI), dodecamethylene diisocyanate, 2,2,4 (2,2,4) -trimethylhexamethylene diisocyanate, and lysine diisocyanate. It is done.
[0030]
Examples of the alicyclic polyisocyanate include isophorone diisocyanate (IPDI), dicyclohexylmethane-4,4′-diisocyanate, trans-1,4-cyclohexyl diisocyanate (hydrogenated MDI), 2,4′-dicyclohexylmethane diisocyanate, 1, Examples include 3-cyclohexylene diisocyanate, lysine diisocyanate SS, and norbornene diisocyanate.
[0031]
Aromatic polyisocyanates include 2,4-tolylene diisocyanate (TDI), 2,6-tolylene diisocyanate (TDI), 4,4'-diphenylmethane diisocyanate (MDI), 2,4'-diphenylmethane diisocyanate (2, 4-MDI), 2,2′-diphenylmethane diisocyanate (2,2′-MDI), p-phenylene diisocyanate (PPDI), xylylene diisocyanate (XDI), 1,5-naphthylene diisocyanate (NDI), 3, 3 Examples include '-dimethyldiphenyl-4,4'-diisocyanate, dianisidine diisocyanate, and tetramethylxylylene diisocyanate (TMXDI).
[0032]
Further, polyfunctional polyisocyanates having three or more functions include polyphenyl polymethylene polyisocyanate (crude-MDI), triphenylmethane triisocyanate, 1-methylbenzole-2,4,6-triisocyanate, dimethyltriphenylmethane tetraisocyanate, and the like. Can be mentioned.
[0033]
The polyisocyanate compounds listed above may be used in the form of modified products such as carbodiimide modification, isocyanurate modification, biuret modification, etc., or may be used in the form of blocked isocyanates blocked with various blocking agents.
[0034]
The (C) polyisocyanate compounds listed above can be used alone or in combination of several kinds.
[0035]
In the (C) polyisocyanate compound, the number of isocyanate groups in the (C) polyisocyanate compound is preferably 0.4 to 15, more preferably 0.7 to 6 per hydroxyl group of the (A) polyol. As used.
[0036]
The (D) cement component used in the undercoat layer and the overcoat layer of the antibacterial polymer cement cured product in the construction method of the present invention is used as a physical component that is mixed with water and then consumed by consuming the existing water. An inorganic structural material that cures or condenses as a result of chemical changes. (D) Examples of cement components include white cement (white cement), Portland cement (ordinary Portland cement, early-strength Portland cement) fly ash cement, blast furnace cement, fast-curing cement characterized by a high alumina content, disilicate Low heat cement, characterized by high content of calcium and tetracalcium aluminoferrite, low content of tricalcium silicate and tricalcium aluminate, very high content of tricalcium silicate and dicalcium silicate, Portland blast furnace characterized in that it is a mixture of sulfate-resistant cement, Portland cement clinker and granular slag, characterized by a very low content of tricalcium aluminate and tetracalcium aluminoferrite Cement, Portland cement And a mixture of hydrated lime, granular slag, ground limestone, colloidal clay, diatomaceous earth, other silica, calcium stearate and paraffin fine powder, or a mixture of two or more Masonry cement, natural cement, lime cement, pure or impure form of calcium oxide, with or without some clayey material Selenite cement characterized by the addition of 10% calcined gypsum, volcanic ash mixed cement characterized by being a mixture of volcanic ash, volcanic diatomaceous earth, pumice, limestone, santrin earth or granular mineral and lime mortar, A hydrated calcium sulfate containing calcined gypsum, keens cement and gypsum plaster Include the calcium cement. Among these cements, white cement (white cement) is particularly preferably used for applications in which color is important.
[0037]
In the cured antibacterial polymer cement according to the construction method of the present invention, the (D) cement component and (B) water can be used in any amount without any particular restriction, but (A) 100 mass of polyol. (D) 50 to 5000 parts by mass of the cement component, (B) 10 to 1000 parts by mass of water, (D) 100 to 2500 parts by mass of the cement component, and (B) 20 to 500 parts by mass of water. preferable.
[0038]
Lightweight aggregates such as pearlite and expanded polystyrene can be used as the (F) aggregate used in the undercoat layer and / or topcoat layer of the antibacterial polymer cement cured product in the construction method of the present invention, but it is used for concrete and mortar. A filler such as crushed stone, silica sand or talc is suitable, and these may be used alone or in combination.
[0039]
(F) Specific examples of the aggregate include known inorganic aggregates and organic aggregates such as pulverized plastics. As the inorganic aggregates, those obtained by pulverizing natural siliceous materials such as river sand and silica sand, and inorganic materials such as glass, ceramics, fused alumina and silicon carbide are used. A hollow material such as a glass balloon or a shirasu balloon can also be used. In addition, foamed plastic fillers such as polystyrene foam and polyurethane foam; nylon polymer, polyvinyl chloride, vinyl chloride / vinyl acetate copolymer, urea / formaldehyde polymer, phenol / formaldehyde polymer, melamine / formaldehyde polymer, acetal polymer and copolymer, acrylic acid Polymers and copolymers, acrylonitrile / butadiene / styrene terpolymers, cellulose acetate, cellulose acetate butyrate, polycarbonate, polyethylene terephthalate, polystyrene, polyurethane, polyethylene, polypropylene and other thermoplastic or thermosetting polymers and copolymers, etc. Grinded material chips, turning scraps and tapes produced when trimming articles formed by the above method Waste resin fillers such as granules, fiber materials such as glass fibers, cotton, wool, carbon fibers, polyamide fibers, polyester fibers, polyacrylonitrile fibers; sawdust, wood chips, pumice, peridotite, power plant fly ash, expansion Also included are clay, foam ore, mica, chalk, talc, kaolin clay, barita, silica and the like.
[0040]
In the antibacterial polymer cement cured product in the construction method of the present invention, (F) the aggregate can be used in any amount without any particular limitation, but (A) 100 to 100 parts by mass of polyol. 3000 parts by mass is preferable, and 300 to 1000 parts by mass is more preferable.
[0041]
The (E) antibacterial agent used in the overcoat layer of the antibacterial polymer cement cured product in the construction method of the present invention is not particularly limited and includes generally used inorganic or organic antibacterial agents. As the antibacterial agent used for the undercoat layer, the same antibacterial agent can be mentioned.
In addition, regarding the antibacterial agent (E), if the inorganic and / or organic antibacterial agent is used in combination as appropriate without being used alone, the effect may be enhanced and / or the antibacterial spectrum may be broadened. it can.
In addition, the antibacterial agent in this invention should just be what can provide the antibacterial property and / or antifungal property generally used, and what is called an antifungal agent is also used as an antibacterial agent.
[0042]
Examples of the inorganic antibacterial agent include metals that can impart antibacterial and / or antifungal properties such as silver, copper, and zinc, and oxides, hydroxides, phosphates, and thiosulfate salts thereof. , Silicates, and inorganic compounds carrying these. Examples of the inorganic compound (carrier) include zeolite, natural zeolite, synthetic zeolite, silica gel, silicate glass, glass, hydroxyapatite, calcium phosphate, anorthite, sparingly soluble phosphate, zirconium phosphate, calcium silicate, and metasilicate aluminum. Examples thereof include magnesium acid, titanium oxide, zinc oxide whisker, silica, alumina, mineral, inorganic substance and the like. More specifically, silver zeolite, zinc zeolite, copper zeolite, silver zirconium phosphate, silver hydroxyapatite, silver phosphate glass, silver phosphate ceramics, silver calcium phosphate, zinc oxide, zinc hydroxide, calcium oxide, Examples thereof include calcium hydroxide. Among these, as commercial products in which silver, copper, zinc or the like is supported on an inorganic compound, Zeomic (manufactured by Sinanen Zeomic Co., Ltd.), Bact killer (manufactured by Kanebo Co., Ltd.), Ion Pure (Ishizuka Glass Co., Ltd.) Nobalon AG300, Novalon AGZ330 (manufactured by Toa Gosei Co., Ltd.), Silwell (manufactured by Fuji Silysia Ltd.), and the like.
[0043]
As the inorganic antibacterial agent, it is preferable to use a fine powder from the viewpoint of dispersibility in the composition, and the particle size is not particularly limited, but the average particle size is 10 μm or less. Is preferably used.
[0044]
In addition, as the organic antibacterial agent, a cyclic organophosphate compound represented by the following general formula (1), an organic nitrogen sulfur antibacterial agent, an organic bromide antibacterial agent, an organic nitrogen antibacterial agent, and other antibacterial agents Agents and the like.
[0045]
[Chemical formula 2]

[0046]
The cyclic organophosphate compound represented by the general formula (1) is used as an antibacterial agent that is contained in an overcoat material or an undercoat material to express the antibacterial properties of a cured product. In the cyclic organophosphate compound represented by the general formula (1), R₁, R₂And R_ThreeExamples of the alkyl group having 1 to 18 carbon atoms represented by: methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, tert-butyl, amyl, tert-amyl, hexyl, octyl, 2-ethylhexyl, isooctyl, Tertiary octyl, nonyl, decyl, dodecyl, tridecyl, isotridecyl, tetradecyl, hexadecyl, octadecyl and the like.
[0047]
Examples of the alkali metal atom represented by M include sodium, potassium, lithium and the like, and examples of the alkaline earth metal atom include calcium, magnesium, barium, strontium and the like, and in particular, M is an alkali metal atom or A zinc atom is preferable because of its great effect.
[0048]
Therefore, specific examples of the compound represented by the general formula (1) include the following compound No. 1-No. 8 is mentioned.
[0049]
[Chemical Formula 3]

[0050]
[Formula 4]

[0051]
[Chemical formula 5]

[0052]
[Chemical 6]

[0053]
[Chemical 7]

[0054]
[Chemical 8]

[0055]
[Chemical 9]

[0056]
Embedded image

[0057]
The particle diameter of the cyclic organophosphate compound is preferably 500 nm or less, particularly 200 nm or less. When the particle diameter exceeds 500 nm, the number of particles per unit area on the surface of the cured product is reduced, and the antibacterial property is lowered.
[0058]
Examples of the organic nitrogen sulfur antibacterial agent include alkylene bis thiocyanate compounds such as methylene bis thiocyanate, 5-chloro-2-methyl-4-isothiazolin-3-one, 2-octyl-4-isothiazolin-3-one, 4, Isothiazoline compounds such as 5-dichloro-2-octyl-4-isothiazolin-3-one, and sulfamide compounds such as chloramine T, N, N-dimethyl-N ′-(fluorodichloromethylthio) -N′-phenylsulfamide , 2- (4-thiocyanomethylthio) benzothiazole, thiazole compounds such as 2-mercaptothiazole, 2-pyridinethiol-1-oxide and metal salts thereof (such as zinc pyrithione), 2- (4-thiazolyl) benzimidazole, 3 , 5-Dimethyl-1,3,5-2H-tetrahydrothiadi -2-thione, N- (fluoro-dichlorophenyl methyl thio) phthalimide, etc. dithio-2,2'-bis (benzamide methyl amide) and the like.
[0059]
Examples of the organic bromide antibacterial agent include 2-bromo-2-nitropropane-1,3-diol, 1,1-dibromo-1-nitro-2-propanol, 2,2-dibromo-2-nitroethanol, 2 Organic bromonitro compounds such as 2-bromo-2-nitro-1,3-diacetoxypropane, β-bromo-β-nitrostyrene, 5-bromo-5-nitro-1,3-dioxane, 2,2-dibromo-3 Organic bromocyano compounds such as cyanopropionamide, 1,2-bis (bromoacetoxy) ethane, 1,4-bis (bromoacetoxy) -2-butene, bromoacetate compounds such as bromoacetamide, and organic compounds such as bistribromomethylsulfone Examples include bromosulfone compounds.
[0060]
Examples of the organic nitrogen-based antibacterial agent include s-triazine compounds such as hexahydro-1,3,5-triethenyl-s-triazine, hexahydro-1,3,5-tris (2-hydroxyethyl) -s-triazine, N , 4-dihydroxy-α-oxobenzeneethaneimidoyl chloride, halogenated oxime compounds such as α-chloro-o-acetoxybenzoaldoxime, chlorinated isocyanuric acid compounds such as trichloroisocyanurate, sodium dichloroisocyanurate, 2-methyl Carbamate compounds such as carbonylaminobenzimidazole, 1- [2- (2,4-dichlorophenyl)]-2 '-[(2,4-dichlorophenyl) methoxy] ethyl-3- (2-phenylethyl) -1H- Imidazole compounds such as imidazolium chloride, 2- Amide compounds such as loroacetamide, aminoalcohol compounds such as N- (2-hydroxypropyl) aminomethanol and 2- (hydroxymethylamino) ethanol, and nitrile compounds such as 2,4,5,6-tetrachloroisophthalonitrile. Can be mentioned.
[0061]
Examples of the other antibacterial agents include methyl 4-hydroxybenzoate, ethyl benzoate, propyl benzoate, and isopropyl benzoate.
[0062]
Among these, in the construction method of the present invention, it is preferable to use a silver-based antibacterial agent and / or a cyclic organophosphate compound represented by the above general formula (1) as the antibacterial agent (E).
[0063]
(E) The antibacterial agent may be contained in advance in other components such as (A) polyol, and may be blended with other components at any time.
[0064]
The added amount of the antibacterial agent (E) is preferably 0.001 to 10 parts by mass, particularly 0.005 to 5 parts by mass with respect to 100 parts by mass of the total amount of the components (A) to (D) and (F). Is preferred. If the added amount is less than 0.001 part by mass, sufficient antibacterial effect may not be obtained, and if it exceeds 10 parts by mass, the effect is not improved so much and it may be economically disadvantageous. .
[0065]
Moreover, you may further mix | blend a pigment respectively with the undercoat layer and topcoat layer of the antibacterial polymer cement hardened | cured material of this invention. Examples of the pigment include iron oxide pigments, titanium pigments, blue and green inorganic pigments, carbon pigments, azo pigments, phthalocyanine pigments, and condensed polycyclic pigments. Examples of the iron oxide pigments include iron black, red pepper, and zinc ferrite pigments. Examples of the titanium pigment include titanium oxide, nickel antimony titanium yellow, and chromium antimony titanium yellow. Examples of blue and green inorganic pigments include ultramarine blue, cobalt blue, chromium oxide, and spinel green. Examples of the azo pigment include azo lake pigments such as Lake Red C, Watching Red, Brilliant Carmine 6B, Hosta Palm Yellow H4G, Nova Palm Yellow H2G, Nova Palm Red HFT, PV Fast Yellow HG, PV Fast Yellow H3R, PV Bordeaux Benzimidazolone pigments such as HF3R, PV Carmine HF4C, PV Red HF2B, PV Fast Maroon HMF01, PV Fast Brown HFR, Diarylide Pigments such as Diarylide Yellow, Diarylide Orange, Pyrazolone Red, PV Fast Yellow HR, Chromophthalate Yellow 8GN, chromophthal yellow 6G, chromophthal yellow 3G, chromophthal yellow GR, chromophthal orange 4R, chromophthal orange GP, chromophthalska Let RN, chromophthal red G, chromophthal red BRN, chromophthal red BG, chromophthal red 2B, condensed azo pigments such as Chromophthal Brown 5R and the like. Examples of the phthalocyanine pigment include phthalocyanine blue and phthalocyanine green. Condensed polycyclic pigments include quinacridone pigments such as PV Fast Pink E, Shinkasha Red B and Shinkasha Red Y, isoindolinone pigments such as Irgadine Yellow 2GLT, Irgadine Yellow 3RLTN, and Chromophthal Orange 2G, and perylene. Perylene pigments such as red, perylene maroon and perylene scarlet, perinone pigments such as perinone orange, dioxazine pigments such as dioxazine violet, anthraquinone pigments such as fileta yellow RN, chromophthal red A3B, slen blue, and palio And quinophthalone pigments such as Tall Yellow L0960HG.
[0066]
Moreover, components other than those described above can be further used as additives in the undercoat layer and the overcoat layer in the construction method of the present invention, if necessary. Examples of such additives include curing reaction modifiers such as curing inhibitors and curing accelerators, resins used for surface condition adjustment such as appearance and slip prevention such as gloss, anti-foaming agents, emulsifiers, antifoaming agents, dilution Common additives such as additives, antioxidants, ultraviolet absorbers, hindered amine light stabilizers and the like can be used, and these can be used alone or in combination of two or more.
[0067]
Examples of the curing reaction modifier include (poly) amines, (polyvalent) alcohols, (polyvalent) phenols, (poly) hydrazides, organic acids, ethylene oxide, propylene oxide, dibutyltin dilaurate, and tetrabutyl titanate. , Zinc octoate, zinc naphthenate, stannous octoate, stannic chloride, ferric chloride, lead octoate, potassium oleate, cobalt 2-ethylhexanoate, N, N-dimethylcyclohexylamine, N, N-dimethylbenzylamine, N-ethylmorpholine, 1,4-diazabicyclo-2,2,2-octane, 4-dimethylaminopyridine, oxypropylated triethanolamine, β-diethylaminoethanol, N, N, N ′, N′-tetrakis (2-hydroxy) ethylenediamine and the like can be mentioned.
[0068]
Examples of the resins include xylene resin, epoxy resin, and urethane resin.
Examples of the foam inhibitor include calcium oxide, magnesium oxide, barium oxide, sodium hydroxide, potassium hydroxide, lithium hydroxide, calcium hydroxide, barium hydroxide, magnesium hydroxide, cadmium hydroxide, calcium silicate, barium silicate, Examples thereof include sodium silicate, lead hydroxide, basic lead acetate, (poly) siloxane, (poly) alkylsiloxane, and (poly) dialkylsiloxane.
[0069]
As the above-mentioned emulsifier, the effect of assisting the dispersion stability of the polyol (A) used and refining the air involved during mixing can be obtained. As the emulsifier, nonionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, polymer surfactants, reactive surfactants, and the like can be used. Among these, nonionic surfactants are particularly preferably used.
0.01-10 mass parts is preferable with respect to 100 mass parts of polyols, and, as for the compounding quantity of the said emulsifier, 0.1-5 mass parts is more preferable.
[0070]
Examples of the nonionic surfactant include ether type polyoxyethylene alkyl ether, polyoxyethylene alkyl phenyl ether, alkylallyl formaldehyde condensed polyoxyethylene ether, polyoxyethylene oxypropylene block polymer, polyoxyethylene polyoxypropylene alkyl Examples include ethers and polyoxyethylene terpene phenyl ethers, and ether ester types include glycerin ester polyoxyethylene ethers, sorbitan ester polyoxyethylene ethers, and sorbitol ester polyoxyethylene ethers. Ethylene rosin acid ester, polyethylene glycol fatty acid ester, glycerin ester, polyglycerin ester Ether, sorbitan esters, propylene glycol esters, sucrose esters, and examples of nitrogen-containing surfactants, fatty acid alkanolamides, polyoxyethylene fatty acid amides, polyoxyethylene alkyl amines, and the like.
[0071]
The polyoxyethylene alkyl ether is produced by addition reaction of 1 to 200 mol of ethylene oxide to a linear or branched primary or secondary alcohol having 8 to 25 carbon atoms. Specifically, primary alcohols such as octyl alcohol, decyl alcohol, lauryl alcohol, myristyl alcohol, cetyl alcohol, stearyl alcohol, oleyl alcohol, behenyl alcohol, 2-dodecanol, 2-tetradecanol, 2-hexadencanol, Secondary alcohols such as 2-octyldodecanol, natural alcohols such as coconut oil reducing alcohol, beef tallow reducing alcohol, and macco (powdered) alcohol are listed. The polyoxyethylene alkylphenyl ether is produced by addition reaction of 1 to 200 mol of ethylene oxide with phenol substituted with an alkyl group having 1 to 20 carbon atoms. Nonylphenol, octylphenol, dodecylphenol, octylcresol, cumylphenol, and the like.
[0072]
Examples of the antifoaming agent include silicone-based antifoaming agents.
Examples of the diluent include high-boiling aromatic hydrocarbon compounds, various epoxy resin diluents, dicarboxylic acid diesters, and paraffinic hydrocarbon compounds.
[0073]
Examples of the antioxidant include phenolic antioxidants, phosphorus antioxidants, and thioether antioxidants.
Examples of the phenolic antioxidant include 2,6-ditert-butyl-p-cresol, 2,6-diphenyl-4-octadecyloxyphenol, distearyl (3,5-ditert-butyl-4). -Hydroxybenzyl) phosphonate, 1,6-hexamethylenebis [(3,5-ditert-butyl-4-hydroxyphenyl) propionic acid amide], 4,4'-thiobis (6-tert-butyl-m-cresol ), 2,2′-methylenebis (4-methyl-6-tert-butylphenol), 2,2′-methylenebis (4-ethyl-6-tert-butylphenol), 4,4′-butylidenebis (6-tert-butyl) -M-cresol), 2,2'-ethylidenebis (4,6-ditert-butylphenol), 2,2'-ethylidenebis (4-secondarybutyl-6-tert-butylphenol) Nol), 1,1,3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane, 1,3,5-tris (2,6-dimethyl-3-hydroxy-4-tertiary) Butylbenzyl) isocyanurate, 1,3,5-tris (3,5-ditert-butyl-4-hydroxybenzyl) isocyanurate, 1,3,5-tris (3,5-ditert-butyl-4- Hydroxybenzyl) -2,4,6-trimethylbenzene, 2-tert-butyl-4-methyl-6- (2-acryloyloxy-3-tert-butyl-5-methylbenzyl) phenol, stearyl (3,5- Ditertiarybutyl-4-hydroxyphenyl) propionate, tetrakis [methyl 3- (3,5-ditertiarybutyl-4-hydroxyphenyl) propionate] methane, thiodiethyleneglycol Bis [(3,5-ditert-butyl-4-hydroxyphenyl) propionate], 1,6-hexamethylenebis [(3,5-ditert-butyl-4-hydroxyphenyl) propionate], bis [3 3-bis (4-hydroxy-3-tert-butylphenyl) butyric acid] glycol ester, bis [2-tert-butyl-4-methyl-6- (2-hydroxy-3-tert-butyl-5-methyl) Benzyl) phenyl] terephthalate, 1,3,5-tris [(3,5-ditert-butyl-4-hydroxyphenyl) propionyloxyethyl] isocyanurate, 3,9-bis [1,1-dimethyl-2- {(3-tert-butyl-4-hydroxy-5-methylphenyl) propionyloxy} ethyl] -2,4,8,10-tetraoxaspiro [5,5] And ndecane and triethylene glycol bis [(3-tert-butyl-4-hydroxy-5-methylphenyl) propionate].
[0074]
Examples of the phosphorus antioxidant include trisnonylphenyl phosphite, tris [2-tert-butyl-4- (3-tert-butyl-4-hydroxy-5-methylphenylthio) -5-methylphenyl]. Phosphite, tridecyl phosphite, octyl diphenyl phosphite, di (decyl) monophenyl phosphite, di (tridecyl) pentaerythritol diphosphite, di (nonylphenyl) pentaerythritol diphosphite, bis (2,4-di Tert-butylphenyl) pentaerythritol diphosphite, bis (2,6-ditert-butyl-4-methylphenyl) pentaerythritol diphosphite, bis (2,4,6-tritert-butylphenyl) pentaerythritol diphosphite Phosphite, bis (2,4-dicumylphenyl) pen Erythritol diphosphite, tetra (tridecyl) isopropylidene diphenol diphosphite, tetra (tridecyl) -4,4′-n-butylidenebis (2-tert-butyl-5-methylphenol) diphosphite, hexa (tridecyl) -1 , 1,3-Tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane triphosphite, tetrakis (2,4-ditert-butylphenyl) biphenylene diphosphonite, 9,10-dihydro-9 -Oxa-10-phosphaphenanthrene-10-oxide, 2,2'-methylenebis (4,6-tert-butylphenyl) -2-ethylhexyl phosphite, 2,2'-methylenebis (4,6- Tributylphenyl) -octadecyl phosphite, 2,2′-ethylidenebis (4 6-ditert-butylphenyl) fluorophosphite, tris (2-[(2,4,8,10-tetrakis tert-butyldibenzo [d, f] [1,3,2] dioxaphosphine-6 -Yl) oxy] ethyl) amine, phosphite of 2-ethyl-2-butylpropylene glycol and 2,4,6-tritert-butylphenol, and the like.
[0075]
Examples of the thioether-based antioxidant include dialkylthiodipropionates such as dilauryl thiodipropionate, dimyristyl thiodipropionate, and distearyl thiodipropionate, and pentaerythritol tetra (β-alkylmercaptopropionate esters). Is mentioned.
[0076]
Examples of the ultraviolet absorber include 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-octoxybenzophenone, and 5,5′-methylenebis (2-hydroxy-4-methoxybenzophenone). 2-hydroxybenzophenones; 2- (2′-hydroxy-5′-methylphenyl) benzotriazole, 2- (2′-hydroxy-3 ′, 5′-ditert-butylphenyl) -5-chloro Benzotriazole, 2- (2′-hydroxy-3′-tert-butyl-5′-methylphenyl) -5-chlorobenzotriazole, 2- (2′-hydroxy-5′-tert. Octylphenyl) benzotriazole, 2- (2′-hydroxy-3 ′, 5′-dicumylphenyl) benzotriazole, 2, 2- (2 such as' -methylenebis (4-tert-octyl-6- (benzotriazolyl) phenol), 2- (2'-hydroxy-3'-tert-butyl-5'-carboxyphenyl) benzotriazole '-Hydroxyphenyl) benzotriazoles; phenyl salicylate, resorcinol monobenzoate, 2,4-ditert-butylphenyl-3,5-ditert-butyl-4-hydroxybenzoate, 2,4-ditert-amylphenyl- Benzoates such as 3,5-ditert-butyl-4-hydroxybenzoate and hexadecyl-3,5-ditert-butyl-4-hydroxybenzoate; 2-ethyl-2′-ethoxyoxanilide, 2-ethoxy- Substituted oxanilides such as 4′-dodecyl oxanilide; ethyl-α-cyano-β, β-diphenylacrylate And cyanoacrylates such as methyl-2-cyano-3-methyl-3- (p-methoxyphenyl) acrylate; 2- (2-hydroxy-4-octoxyphenyl) -4,6-bis (2,4 -Di-tert-butylphenyl) -s-triazine, 2- (2-hydroxy-4-methoxyphenyl) -4,6-diphenyl-s-triazine, 2- (2-hydroxy-4-propoxy-5-methylphenyl) And triaryltriazines such as -4,6-bis (2,4-ditert-butylphenyl) -s-triazine.
[0077]
Examples of the hindered amine light stabilizer include 2,2,6,6-tetramethyl-4-piperidyl stearate, 1,2,2,6,6-pentamethyl-4-piperidyl stearate, 2,2, 6,6-tetramethyl-4-piperidylbenzoate, bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis (1,2,2,6,6-tetramethyl-4-piperidyl) Sebacate, bis (1-octoxy-2,2,6,6-tetramethyl-4-piperidyl) sebacate, tetrakis (2,2,6,6-tetramethyl-4-piperidyl) -1,2,3,4 -Butanetetracarboxylate, tetrakis (1,2,2,6,6-pentamethyl-4-piperidyl) -1,2,3,4-butanetetracarboxylate, bis (2,2 6,6-tetramethyl-4-piperidyl) di (tridecyl) -1,2,3,4-butanetetracarboxylate, bis (1,2,2,6,6-pentamethyl-4-piperidyl) di (Tridecyl) -1,2,3,4-butanetetracarboxylate, bis (1,2,2,4,4-pentamethyl-4-piperidyl) -2-butyl-2- (3,5-ditertiary Butyl-4-hydroxybenzyl) malonate, 1- (2-hydroxyethyl) -2,2,6,6-tetramethyl-4-piperidinol / diethyl succinate polycondensate, 1,6-bis (2, 2,6,6-tetramethyl-4-piperidylamino) hexane / 2,4-dichloro-6-morpholino-s-triazine polycondensate, 1,6-bis (2,2,6,6-tetramethyl- 4-piperidylamino) Hexane / 2,4-dichloro-6-tert-octylamino-s-triazine polycondensate, 1,5,8,12-tetrakis [2,4-bis (N-butyl-N- (2,2,6 , 6-tetramethyl-4-piperidyl) amino) -s-triazin-6-yl] -1,5,8,12-tetraazadodecane, 1,5,8,12-tetrakis [2,4-bis ( N-butyl-N- (1,2,2,6,6-pentamethyl-4-piperidyl) amino) -s-triazin-6-yl] -1,5,8-12-tetraazadodecane, 1,6 , 11-tris [2,4-bis (N-butyl-N- (2,2,6,6-tetramethyl-4-piperidyl) amino) -s-triazin-6-yl] aminoundecane, 1,6 , 11-tris [2,4-bis (N-butyl-N- (1,2,2 6,6-pentamethyl-4-piperidyl) amino) -s-triazin-6-yl] hindered amine compounds such as aminoundecanoic the like.
[0078]
The antioxidant, the ultraviolet absorber and the hindered amine light stabilizer are each preferably 0.001 to 10 parts by mass, more preferably 0 with respect to 100 parts by mass of the undercoat or topcoat in the construction method of the present invention. 0.05 to 5 parts by mass are used.
[0079]
Each composition of the undercoat material and the topcoat material in the construction method of the present invention is, for example, dispersed in advance in a mixture of (A) polyol and (B) water, if necessary, emulsifier, diluent, curing reaction modifier and the like. To produce a suspension, and (C) an isocyanate compound, (D) a cement component, (E) an antibacterial agent and (F) an aggregate, and other additives as necessary. can do.
[0080]
The topcoat layer in the construction method of the present invention can have a smooth finish or a non-slip finish on the surface of the topcoat layer depending on the type of (F) aggregate. For example, in the case of smooth finishing, silica sand having a relatively small particle size is used as the aggregate, and in the case of non-slip finishing, aggregates having different particle sizes such as pulverized ceramic are mixed in addition to the silica sand. In the case of non-slip finishing, there is a method in which these aggregates are included in the raw material in advance, but there is also a method in which the aggregate is directly sprayed on the surface of the topcoat layer immediately after the topcoat layer is applied.
[0081]
The construction method of the present invention is used for construction of flooring materials, floor finishing materials, wall materials, wall finishing materials, etc., and is particularly suitable for construction of floor materials such as flooring materials and floor finishing materials. It is preferably used in medical-related facilities, food manufacturing factories, kitchens, nurseries, kindergartens, nursing homes and the like. The construction method of the present invention is particularly suitable for a hard floor surface composed of concrete, cement mortar, various metals, etc., that is, particularly suitable for construction of a hard floor finish, and is applied. When the ground is preliminarily cleaned and applied to a metal surface, the base is preferably applied after degreasing, derusting, polishing or the like.
[0082]
In the construction method of the present invention, the method for applying the topcoat material and the undercoat material is not particularly limited, and a known general method can be used. For example, after mixing with a cement mixer or a forced spatula mixer, it is applied by a method such as roller coating, trowel coating, pouring, or spraying.
[0083]
【Example】
Examples and the like of the present invention are shown below, but the present invention is not limited to these.
The following Production Examples 1 to 3 show production examples of an epoxy ring-opening polyol used for the topcoat material and the undercoat material in the construction method of the present invention. Examples 1-1 to 1-7 below show examples of the construction method of the present invention, and Comparative Example 1-1 below shows examples of a construction method using a top coating material that does not contain an antibacterial agent. Comparative example 1-2 shows the Example of the construction method which provides only an overcoat layer.
[0084]
[Production Example 1] Polyol No. 1 production
Into a reaction flask of 1 liter in which the system was purged with nitrogen, 4-t-butylphenyl glycidyl ether (Adeka Resin ED-509: Asahi), an epoxy compound having an acid value of 0.7 mg KOH / g and a viscosity of 2700 mP · s (25 ° C.) 245 g of Denka Kogyo Co., Ltd.) and 447 g of castor oil fatty acid (CO-FA: manufactured by Ito Oil Co., Ltd.) were charged and heated to 100 ° C. under a nitrogen stream. Ethyltriphenylphosphonium bromide was added to this by 0.03% by mass of the sum of the amount of the epoxy compound and the amount of castor oil fatty acid, and reacted for 4 hours. The acid value was 0.8 mgKOH / g, the viscosity was 160 mP · s (25 °) polyol No. 1 was obtained.
[0085]
[Production Example 2] Polyol No. Production of 2
Instead of 245 g of 4-t-butylphenyl glycidyl ether (Adeka Resin ED-509: manufactured by Asahi Denka Kogyo Co., Ltd.), 270 g of 4-methylphenyl glycidyl ether (Adeka Resin ED-529: manufactured by Asahi Denka Kogyo Co., Ltd.) is used. Except for the above, polyol No. 1 was prepared in the same manner as in Production Example 1. 2 was obtained. The obtained polyol No. 2 had an acid value of 0.5 mgKOH / g and a viscosity of 750 mP · s (25 ° C.).
[0086]
[Production Example 3] Polyol No. Production of 3
Instead of 245 g of 4-t-butylphenylglycidyl ether (Adeka Resin ED-509: manufactured by Asahi Denka Kogyo Co., Ltd.), 450 g of 2-phenoxyisopropyl glycidyl ether (Adeka Resin ED-501: manufactured by Asahi Denka Kogyo Co., Ltd.) is used. Except for the above, polyol No. 1 was prepared in the same manner as in Production Example 1. 3 was obtained. The obtained polyol No. 3 had an acid value of 1.0 mgKOH / g and a viscosity of 440 mP · s (25 ° C.).
[0087]
The polyol Nos. 1 to 42.6 parts by mass, emulsifier (Adecatol LA-875: manufactured by Asahi Denka Kogyo Co., Ltd., poly (oxyethylene) alkyl ether) 0.6 parts by mass, and SAS-296 as a diluent 17.5 parts by mass (manufactured by Nippon Oil Co., Ltd.), 3.5 parts by mass of benzyl alcohol as a curing reaction modifier, and 0 EDP-300 (propylene oxide 4 mol adduct of ethylenediamine: reaction modifier) After charging 8 parts by mass, 35 parts by mass of water was added little by little, and the mixture was stirred with a homomixer at 4000 rpm for 10 minutes to obtain a raw material a.
However, polyol no. The raw material a containing 1 was a-1, polyol No. 2 containing a-2, polyol No. The raw material a containing 3 was designated as a-3.
[0088]
[Example 1 and Comparative Example 1] Construction of cured antibacterial polymer cement
The cured antibacterial polymer cement was applied as follows.
Undercoat layer: 100 parts by mass of the same raw material a used in the overcoat layer described in Tables 1 and 2 and 100 parts by mass of a polyisocyanate compound (c-MDI) as a curing agent, mixed for 20 seconds, and then powdered Add 400 parts by weight of F-1 (104 parts by weight of white cement, 272 parts by weight of No. 5 silica sand, 8 parts by weight of slaked lime, 8 parts by weight of calcium carbonate and 8 parts by weight of chromium oxide) and mix uniformly to obtain a composition ( Undercoat material) was obtained. The undercoat material was applied to a concrete flat plate (600 × 360 × 50 mm) with a thickness of 1 mm using a gold iron to form an undercoat layer. After applying the undercoating material and curing for 10 hours, the process moved to the overcoating step.
Topcoat layer: 100 parts by mass of the raw material a described in Tables 1 and 2 and 100 parts by mass of a polyisocyanate compound (c-MDI) as a curing agent were mixed and mixed, and then powder F-2 (white cement) mixed in advance 130 parts by mass, 340 parts by mass of No. 5 silica sand, 10 parts by mass of slaked lime, 10 parts by mass of calcium carbonate and 10 parts by mass of chromium oxide) 500 parts by mass, and further adding and mixing antibacterial agents as shown in Tables 1 and 2. A composition (overcoat material) was obtained. The top coat material was applied onto an undercoat layer with a gold iron so as to have a thickness of 3 mm and cured to obtain a concrete flat plate having a two-layer antibacterial polymer cement cured product.
Evaluate the workability when applying the top coating material in the construction of the polymer cement cured product, and observe the appearance of the coating film on the concrete flat plate having the obtained antibacterial polymer cement cured product, and <Antimicrobial test I> and <Antimicrobial test II> were performed.
[0089]
<Antimicrobial test I>
The test was performed for Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and black mold, respectively.
It cut out into the shape of 40x40x5mm from the concrete flat plate which has antibacterial polymer cement hardened | cured material, and after having immersed in distilled water for 5 hours as a pretreatment, it dried and made it the hardened | cured material test body.
For Staphylococcus aureus, Escherichia coli, and Pseudomonas aeruginosa, a bacterial culture solution is applied onto the cured specimen, and a polyethylene wrap film is brought into close contact with each other and stored at 35 ° C. for 24 hours. The bacterial solution was washed out and the number of surviving bacteria was measured by the pour plate culture method using SCDLP agar medium. However, each initial bacterial count is 1.0 × 10^Five~ 2.5 × 10^FiveIt adjusted to the range of the piece / g.
For black mold, a spore suspension was prepared in accordance with JIS Z 2911. After spraying the spore suspension on a cured specimen and culturing at 29 ° C., the growth of the mold was observed. Evaluation was made according to the following (evaluation criteria).
[0090]
(Evaluation criteria)
0: No mold growth was observed with the naked eye or under a microscope.
1: Although no growth of mold was observed with the naked eye, it was observed under a microscope.
2: The growth of mycelium is slight, and the area of the growth part is less than 25% of the total area of the test specimen.
3: The growth of mycelium is moderate, and the area of the growth part is 25% or more and less than 50% of the total area of the test specimen.
4: Mycelium grows well, and the area of the growth part is 50% or more and 100% or less of the specimen.
5: Mycelia grow vigorously and cover the whole specimen.
[0091]
<Antimicrobial test II>
Further, after carrying out the following (caster test), the antibacterial test II was carried out in the same manner as the antibacterial test I. However, in the antibacterial test II, the test was performed on Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa.
(Caster test)
According to DIN54324 flooring fatigue test, a concrete flat plate with antibacterial polymer cement hardened material was set on the turntable of the testing machine, and three rubber casters (outer diameter 75mm, width 20mm) pressed with 120kg , And one turn of the turntable was set as one cycle, and 10,000 cycles were performed.
[0092]
Tables 1 and 2 below show the workability of the top coat material, the observation results of the appearance of the coating film, and the results of antibacterial tests I and II.
[0093]
[Table 1]

[0094]
[Table 2]

[0095]
As is apparent from the results of Tables 1 and 2, it was confirmed that according to the construction method of the present invention, the workability during coating was excellent, and the appearance and antibacterial properties of the coating film surface were excellent. On the other hand, when only the topcoat layer was applied without applying the undercoat layer, the application was difficult and the appearance of the coating film surface was poor. Further, it was confirmed that the antibacterial property of the surface was inferior when the antibacterial agent was not contained in the overcoat layer.
[0096]
【The invention's effect】
The construction method of the antibacterial polymer cement cured product of the present invention can provide a cured product having excellent coating workability and excellent surface antibacterial properties.

Claims (4)

In a laminated structure composed of an undercoat, an undercoat layer provided on the undercoat surface, and an overcoat layer provided on the undercoat layer surface, (A) polyol, (B) water, (C) polyisocyanate compound and (D) the composition containing the cement ingredient cured by applying to the substrate after providing an undercoat layer, (a) a polyol, (B) water, (C) a polyisocyanate compound, (D) cement component and (E) A composition containing an antibacterial agent is applied to the surface of the undercoat layer and cured to provide an overcoat layer . The (A) polyol is an epoxy ring-opening polyol obtained by reacting a castor oil fatty acid with an epoxy compound. A construction method of a hardened antibacterial polymer cement. The composition containing (A) polyol, (B) water, (C) polyisocyanate compound and (D) cement component used for the undercoat layer comprises (E) antibacterial agent and / or (F) aggregate. The composition containing (A) polyol, (B) water, (C) polyisocyanate compound, (D) cement component, and (E) antibacterial agent used for the top coat layer is (F) aggregate. The construction method of the antibacterial polymer cement hardened | cured material of Claim 1 containing this . The construction method of the cured antibacterial polymer cement according to claim 1 or 2, wherein the (E) antibacterial agent is a silver-based antibacterial agent and / or a cyclic organophosphate compound represented by the following general formula (1).

  The construction method of the antibacterial polymer cement hardened | cured material in any one of Claims 1-3 used for a floor | bed.