JP6844757B2 - ウレタン樹脂組成物、皮膜、及び、合成皮革 - Google Patents
ウレタン樹脂組成物、皮膜、及び、合成皮革 Download PDFInfo
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- JP6844757B2 JP6844757B2 JP2020544877A JP2020544877A JP6844757B2 JP 6844757 B2 JP6844757 B2 JP 6844757B2 JP 2020544877 A JP2020544877 A JP 2020544877A JP 2020544877 A JP2020544877 A JP 2020544877A JP 6844757 B2 JP6844757 B2 JP 6844757B2
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- urethane resin
- resin composition
- polyisocyanate
- anionic
- polyol
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- 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
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
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- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/44—Polycarbonates
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- C08G18/08—Processes
- C08G18/0804—Manufacture of polymers containing ionic or ionogenic groups
- C08G18/0819—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups
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- C08G18/0861—Manufacture of polymers in the presence of non-reactive compounds in the presence of liquid diluents in the presence of a dispersing phase for the polymers or a phase dispersed in the polymers
- C08G18/0866—Manufacture of polymers in the presence of non-reactive compounds in the presence of liquid diluents in the presence of a dispersing phase for the polymers or a phase dispersed in the polymers the dispersing or dispersed phase being an aqueous medium
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- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
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- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/22—Catalysts containing metal compounds
- C08G18/227—Catalysts containing metal compounds of antimony, bismuth or arsenic
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- C08G18/30—Low-molecular-weight compounds
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- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6659—Compounds of group C08G18/42 with compounds of group C08G18/34
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- 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
- C08G18/721—Two or more polyisocyanates not provided for in one single group C08G18/73 - C08G18/80
- C08G18/722—Combination of two or more aliphatic and/or cycloaliphatic polyisocyanates
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- 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
- C08G18/73—Polyisocyanates or polyisothiocyanates acyclic
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- 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
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- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
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- 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
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/758—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing two or more cycloaliphatic rings
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- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
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- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
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Description
攪拌機、還流冷却器、温度計、及び、窒素導入管を備えた四つ口フラスコに、窒素気流下、ポリカーボネートポリオール(三菱化学株式会社製「ベネビオールNL−3010DB」、1,4−ブタンジオール及びバイオマス由来の1,10−デカンジオールを原料とするもの、モル比[(C4)/(C10)]=90/10、数平均分子量;3,000、以下、「バイオPC」と略記する。)250質量部、メチルエチルケトン100質量部、2,2−ジメチロールプロピオン酸(以下「DMPA」と略記する。)11質量部を加え、十分に撹拌混合した。その後、ジシクロヘキシルメタンジイソシアエンート(以下「HMDI」と略記する。)18質量部、ヘキサメチレンジイソシアネート(以下「HDI」と略記する。)25質量部、次いで、カルボン酸ビスマス0.03質量部を加え、75℃で約4時間反応させ、イソシアネート基を有するウレタンプレポリマーのメチルエチルケトン溶液を得た。
次いで、トリエチルアミン8質量部を加え、ウレタンプレポリマー中のカルボキシル基を中和した後、イオン交換水825質量部を加え、次いで、ピペラジン(以下「Pip」と略記する。)2.81質量部を加え反応させた。反応終了後、メチルエチルケトンを減圧留去することで、ウレタン樹脂組成物(不揮発分;30質量%、酸価;14.76mgKOH/g)を得た。
用いる材料の種類及び表を表1〜2に示す通りに変更した以外は、実施例1と同様にしてウレタン樹脂組成物を得た。
実施例および比較例で用いたポリオール等の数平均分子量は、ゲル・パーミエーション・カラムクロマトグラフィー(GPC)法により、下記の条件で測定し得られた値を示す。
カラム:東ソー株式会社製の下記のカラムを直列に接続して使用した。
「TSKgel G5000」(7.8mmI.D.×30cm)×1本
「TSKgel G4000」(7.8mmI.D.×30cm)×1本
「TSKgel G3000」(7.8mmI.D.×30cm)×1本
「TSKgel G2000」(7.8mmI.D.×30cm)×1本
検出器:RI(示差屈折計)
カラム温度:40℃
溶離液:テトラヒドロフラン(THF)
流速:1.0mL/分
注入量:100μL(試料濃度0.4質量%のテトラヒドロフラン溶液)
標準試料:下記の標準ポリスチレンを用いて検量線を作成した。
東ソー株式会社製「TSKgel 標準ポリスチレン A−500」
東ソー株式会社製「TSKgel 標準ポリスチレン A−1000」
東ソー株式会社製「TSKgel 標準ポリスチレン A−2500」
東ソー株式会社製「TSKgel 標準ポリスチレン A−5000」
東ソー株式会社製「TSKgel 標準ポリスチレン F−1」
東ソー株式会社製「TSKgel 標準ポリスチレン F−2」
東ソー株式会社製「TSKgel 標準ポリスチレン F−4」
東ソー株式会社製「TSKgel 標準ポリスチレン F−10」
東ソー株式会社製「TSKgel 標準ポリスチレン F−20」
東ソー株式会社製「TSKgel 標準ポリスチレン F−40」
東ソー株式会社製「TSKgel 標準ポリスチレン F−80」
東ソー株式会社製「TSKgel 標準ポリスチレン F−128」
東ソー株式会社製「TSKgel 標準ポリスチレン F−288」
東ソー株式会社製「TSKgel 標準ポリスチレン F−550」
実施例及び比較例で得られたウレタン樹脂組成物を乾燥し、乾燥固化した樹脂粒子の0.05g〜0.5gを、300mL三角フラスコに秤量し、次いで、テトラヒドロフランとイオン交換水との質量割合[テトラヒドロフラン/イオン交換水]が80/20の混合溶媒約80mLを加えそれらの混合液を得た。
次いで、前記混合液にフェノールフタレイン指示薬を混合した後、あらかじめ標定された0.1mol/Lの水酸化カリウム水溶液で滴定し、滴定に用いた水酸化カリウム水溶液の量から下記計算式(1)に従い、水性ウレタン樹脂(A)の酸価(mgKOH/g)を求めた。
計算式 A=(B×f×5.611)/S (1)
式中、Aは樹脂の固形分酸価(mgKOH/g)、Bは滴定に用いた0.1mol/L水酸化カリウム水溶液の量(mL)、fは0.1mol/L水酸化カリウム水溶液のファクター、Sは樹脂粒子の質量(g)、5.611は水酸化カリウムの式量(56.11/10)である。
実施例及び比較例で得られたウレタン樹脂組成物100質量部、及び、増粘剤(DIC株式会社製「ハイドラン アシスターT10」)1質量部を配合した配合液を、フラット離型紙(リンテック株式会社製「EK−100D」)上に、乾燥後の膜厚が30μmとなるように塗布し、70℃で2分間、120℃で2分間乾燥させて、ポリウレタンフィルムを得た。次いで、このポリウレタンフィルムを幅5mm、長さ50mmの短冊状に裁断し、試験片とした。この試験片を引張試験機(株式会社島津製作所製「オートグラフAG−I」)を使用して、チャック間距離;40mm、引張速度;10mm/秒、温度23℃の条件下で引張試験を行い、100%伸長した際の応力(100%モジュラス、以下「100%M(1)」)を測定した。
「A」:保持率が50%以上である。
「B」:保持率が30%以上50%未満である。
「C」:保持率が30%未満である。
実施例及び比較例で得られたウレタン樹脂組成物100質量部、黒色顔料(DIC株式会社製「ダイラックHS−9530」)10質量部、増粘剤(DIC株式会社製「ハイドラン アシスターT10」)1質量部を配合した配合液を、フラット離型紙(味の素株式会社製「DN−TP−155T」)上に、乾燥後の膜厚が30μmとなるように塗布し、70℃で2分間、120℃で2分間乾燥させて、表皮層を得た。
次いで、ウレタン樹脂接着剤(DIC株式会社製「ハイドランWLA−515AR」)を100質量部、増粘剤(DIC株式会社製「ハイドラン アシスターT10」)1質量部、ポリイソシアネート架橋剤(DIC株式会社製「ハイドラン アシスターC5」)8質量部を配合した配合液を、前記表皮層上に、乾燥後の膜厚が50μmとなるように塗布し、70℃で3分間乾燥させた。乾燥後、直ちにT/R起毛布を貼り合わせた後、120℃で2分間熱処理し、次いで、50℃で2日間熟成させた後、離型紙を剥がして合成皮革を得た。
得られた合成皮革を、フレキソメーター(株式会社安田精機製作所製「低温槽付きフレキソメーター」)での屈曲性試験(−10℃、100回/毎分)を行い、合成皮革の表面に割れが生じるまでの回数を測定し、以下のように評価した。
「A」:30,000回以上
「B」:10,000回以上30,000回未満
「C」:10,000回未満
「C6」;1,6−ヘキサンジオール
「他PC」;石油資源由来の1,6−ヘキサンジオールを原料とするポリカーボネートポリオール(数平均分子量;2,000)
「NCO/OH」;ウレタンプレポリマーを合成する際の前記ポリオール(a)及び前記アニオン性基を有する化合物(c)が有する水酸基と、前記ポリイソシアネート(b)が有するイソシアネート基とのモル比
「IPDA」;イソホロンジアミン
「EDA」;エチレンジアミン
「PP−NCO/OH」;ウレタンプレポリマーが有するイソシアネート基と、前記鎖伸長剤(d)が有するアミノ基とのモル比[NCO/NH]としては、0.7以上1未満であることが好ましい。
Claims (6)
- アニオン性ウレタン樹脂(X)、及び、水(Y)を含有するウレタン樹脂組成物であって、
前記ウレタン樹脂組成物が、乳化剤(Z)を含まないものであり、
前記アニオン性ウレタン樹脂(X)が、
ブタンジオール、及び、バイオマス由来のデカンジオ−ルを原料とするポリカーボネートポリオール(a1)を含むポリオール(a)と、
脂肪族ポリイソシアネート(b1)及び脂環式ポリイソシアネート(b2)を含むポリイソシアネート(b)とを必須原料とするものであり、
前記ポリカーボネートポリオール(a1)における、前記ブタンジオール(C4)と前記バイオマス由来のデカンジオール(C10)とのモル比[(C4)/(C10)]が、75/25〜98/2の範囲であることを特徴とするウレタン樹脂組成物。 - 前記脂肪族ポリイソシアネート(b1)と前記脂環式ポリイソシアネート(b2)とのモル比[(b1)/(b2)]が、10/90〜90/10の範囲である請求項1記載のウレタン樹脂組成物。
- 前記アニオン性ウレタン樹脂(X)が、更にアミノ基を有する鎖伸長剤(d1)を原料とするものであり、かつ、水酸基を有する鎖伸長剤(d2)を原料としないものである請求項1又は2記載のウレタン樹脂組成物。
- 前記アニオン性ウレタン樹脂(X)の酸価が、5〜15mgKOH/gの範囲である請求項1〜3のいずれか1項記載のウレタン樹脂組成物。
- 請求項1〜4のいずれか1項記載のウレタン樹脂組成物により形成されたことを特徴とする皮膜。
- 請求項1〜4のいずれか1項記載のウレタン樹脂組成物により形成された表皮層を有することを特徴とする合成皮革。
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