JPWO2013187208A1 - 二液常温硬化型ウレタン塗膜防水材組成物 - Google Patents
二液常温硬化型ウレタン塗膜防水材組成物 Download PDFInfo
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- JPWO2013187208A1 JPWO2013187208A1 JP2013553700A JP2013553700A JPWO2013187208A1 JP WO2013187208 A1 JPWO2013187208 A1 JP WO2013187208A1 JP 2013553700 A JP2013553700 A JP 2013553700A JP 2013553700 A JP2013553700 A JP 2013553700A JP WO2013187208 A1 JPWO2013187208 A1 JP WO2013187208A1
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- urethane
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- 238000000576 coating method Methods 0.000 claims abstract description 27
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
- C08G18/4812—Mixtures of polyetherdiols with polyetherpolyols having at least three hydroxy groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
- C08G18/7621—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring being toluene diisocyanate including isomer mixtures
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
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- C09D7/63—Additives non-macromolecular organic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- Chemical Kinetics & Catalysis (AREA)
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Abstract
Description
(1) ウレタンプレポリマーとダイマー酸とを含有する主剤と、
ポリプロピレングリコールと湿潤分散剤とを含有する硬化剤とを有し、
前記ダイマー酸の含有量が、前記ウレタンプレポリマー100質量部に対して0.15質量部以上であり、
前記湿潤分散剤の含有量が、前記ウレタンプレポリマー100質量部に対して0.15質量部以上であることを特徴とする二液常温硬化型ウレタン塗膜防水材組成物。
本実施形態の組成物に用いられる主剤は、ウレタンプレポリマーとダイマー酸とを含有する。
主剤に含有されるウレタンプレポリマーは特に制限されない。例えば、従来公知のものが挙げられる。具体的には、例えば、ポリオール化合物とポリイソシアネート化合物とを、ヒドロキシ基に対してイソシアネート基(NCO基)が過剰となるように反応させることにより得られる反応生成物が挙げられる。ウレタンプレポリマーは、0.5質量%以上5質量%以下のNCO基を分子末端に含有することができる。
ポリオール化合物は、炭化水素に有する複数個の水素を、水酸基で置換した構造を持ったポリヒドロキシル化合物の総称である。ウレタンプレポリマーの製造の際に使用されるポリオール化合物は、ヒドロキシ基を2個以上有するものであれば特に限定されない。例えば、ポリエーテルポリオール、ポリエステルポリオール、その他のポリオール、これらの混合ポリオールが挙げられる。
ウレタンプレポリマーの製造の際に使用されるポリイソシアネート化合物は、分子内にイソシアネート基を2個以上有するものであれば特に限定されない。ポリイソシアネート化合物として、例えば、TDI(例えば、2,4−トリレンジイソシアネート(2,4−TDI)、2,6−トリレンジイソシアネート(2,6−TDI))、MDI(例えば、4,4’−ジフェニルメタンジイソシアネート(4,4’−MDI)、2,4’−ジフェニルメタンジイソシアネート(2,4’−MDI))、1,4−フェニレンジイソシアネート、ポリメチレンポリフェニレンポリイソシアネート、キシリレンジイソシアネート(XDI)、テトラメチルキシリレンジイソシアネート(TMXDI)、トリジンジイソシアネート(TODI)、1,5−ナフタレンジイソシアネート(NDI)、トリフェニルメタントリイソシアネート等のような芳香族ポリイソシアネート;ヘキサメチレンジイソシアネート(HDI)、トリメチルヘキサメチレンジイソシアネート(TMHDI)、リジンジイソシアネート、ノルボルナンジイソシアネート(NBDI)、エチレンジイソシアネート、プロピレンジイソシアネート、テトラメチレンジイソシアネートのような脂肪族ポリイソシアネート;トランスシクロヘキサン−1,4−ジイソシアネート、イソホロンジイソシアネート(IPDI)、ビス(イソシアネートメチル)シクロヘキサン(H6XDI)、ジシクロヘキシルメタンジイソシアネート(H12MDI)のような脂環式ポリイソシアネート;これらのカルボジイミド変性ポリイソシアネート;これらのイソシアヌレート変性ポリイソシアネートが挙げられる。
ダイマー酸は、多塩基性カルボン酸であれば特に限定されない。多塩基性カルボン酸として、例えば、飽和ジカルボン酸、不飽和ジカルボン酸、芳香族ジカルボン酸等が挙げられる。飽和ジカルボン酸として、グルタル酸、アジピン酸、アゼライン酸等が挙げられる。不飽和ジカルボン酸として、フマル酸、マレイン酸等が挙げられる。芳香族ジカルボン酸として、フタル酸、イソフタル酸、テレフタル酸等が挙げられる。
本実施形態の組成物に用いられる硬化剤は、ポリプロピレングリコールと湿潤分散剤とを含有する。
硬化剤は、ポリプロピレングリコールを含む。また、硬化剤はポリプロピレングリコール以外のポリオール化合物を含有することができる。ポリプロピレングリコール以外のポリオール化合物は、ヒドロキシ基を2個以上有するものであり、例えば、ポリエーテルポリオール、ポリエステルポリオール、その他のポリオール、これらの混合ポリオールが挙げられる。ポリオール化合物として、具体的には、上述したウレタンプレポリマーに用いられるポリオール化合物と同様である。
湿潤分散剤としては、カルボキシル基、水酸基、酸エステルなどの極性基を有する化合物や高分子化合物、例えば、リン酸エステル類などの酸含有化合物、酸基を含む共重合物、水酸基含有ポリカルボン酸エステル、ポリシロキサン、長鎖ポリアミノアマイドと酸エステルの塩などを挙げることができる。
数平均分子量4000のポリプロピレンエーテルトリオール100g(G−4000、旭硝子株式会社製)と、数平均分子量2000のポリプロピレンエーテルジオール150g(D−2000、旭硝子株式会社製)とを反応容器に入れて、粘度調節のために可塑剤としてフタル酸ジイソノニル15g(DINP、株式会社ジェイ・プラス製)を加え、110℃に加熱し、6時間脱水処理した。次いで、ここにトリレンジイソシアネート(コスモネートT80、三井武田ケミカル株式会社製)をNCO基/OH基の当量比が1.98となるように加え、これを80℃に加熱し、窒素雰囲気下で12時間混合、攪拌し、ウレタンプレポリマーを調製した。得られたウレタンプレポリマーのNCO基の含有量は、ウレタンプレポリマー全量中、3.0質量%であった。
下記表1〜3に示す主剤及び硬化剤として用いる各成分を表1〜3に示す添加量(質量部)で配合し、これらを電動攪拌機等を用いて十分に混合して主剤及び硬化剤を調製した。表1〜3の各実施例及び各比較例の主剤100質量部と、表1〜3の各実施例及び各比較例の硬化剤100質量部とを電動攪拌機等を用いて十分に混合することにより各実施例及び各比較例の二液常温硬化型ウレタン塗膜防水材組成物を得た。
[耐ピンホール性の評価]
得られた二液常温硬化型ウレタン塗膜防水材組成物を用いて、耐ピンホール性を以下のとおり評価した。結果を表1〜3に示す。
コンクリート片(7cm×7cm)の表面に上記で調製して得られた各実施例及び各比較例の二液常温硬化型ウレタン塗膜防水材組成物を塗布し、40℃、90%RHの条件下でオートクレーブ中で24時間養生して硬化させた。養生後、各硬化物の表面状態を目視で確認し、耐ピンホール性を下記評価基準に基づいて評価した。結果を表1〜3に示す。
(評価基準)
○:ウレタン塗膜の表面にピンホールの数が10個未満確認された、又はピンホールが確認されない
×:ウレタン塗膜の表面にピンホールの数が10個以上確認された
・ウレタンプレポリマー:商品名「U−8000A」、横浜ゴム株式会社製
・ダイマー酸1:脂肪族ジカルボン酸、商品名「IPU−22」、岡村精油株式会社製
・ダイマー酸2:脂肪族ジカルボン酸、商品名「UL−20」、岡村精油株式会社製
・重質炭酸カルシウム:商品名「スーパーSS」、丸尾カルシウム株式会社製
・ポリプロピレングリコール:商品名「EXCENOL 2020」、旭硝子株式会社製
・触媒:鉛触媒、ミニコP−30、活材ケミカル株式会社製
・湿潤分散剤1:ポリカルボン酸のアルキルアンモニウム塩の溶液、商品名「BYK−W961」、ビックケミー・ジャパン株式会社製
・湿潤分散剤2:不飽和ポリカルボン酸ポリマー溶液、商品名「BYK−W935」、ビックケミー・ジャパン株式会社製
Claims (1)
- ウレタンプレポリマーとダイマー酸とを含有する主剤と、
ポリプロピレングリコールと湿潤分散剤とを含有する硬化剤とを有し、
前記ダイマー酸の含有量が、前記ウレタンプレポリマー100質量部に対して0.15質量部以上であり、
前記湿潤分散剤の含有量が、前記ウレタンプレポリマー100質量部に対して0.15質量部以上であることを特徴とする二液常温硬化型ウレタン塗膜防水材組成物。
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JP2008184554A (ja) * | 2007-01-30 | 2008-08-14 | Yokohama Rubber Co Ltd:The | 二液常温硬化型ウレタン塗膜防水材組成物 |
JP2008285582A (ja) * | 2007-05-17 | 2008-11-27 | Yokohama Rubber Co Ltd:The | 二液硬化型ポリウレタン系シーリング材組成物 |
JP2010260988A (ja) * | 2009-05-11 | 2010-11-18 | Yokohama Rubber Co Ltd:The | 二液常温硬化型ウレタン塗膜防水材組成物 |
JP2011127036A (ja) * | 2009-12-18 | 2011-06-30 | Yokohama Rubber Co Ltd:The | 二液常温硬化型ウレタン塗膜防水組成物 |
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