JP7331454B2 - 多孔体の製造方法 - Google Patents
多孔体の製造方法 Download PDFInfo
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Description
攪拌機、還流器、温度計を有する反応装置に、ポリエステルポリオール(エチレングリコール及びアジピン酸の反応物、数平均分子量;2,000)を100質量部、1,4-ブタンジオールを20質量部、N,N-ジメチルホルムアミドを564質量部、及び、4,4’-ジフェニルメタンジイソシアネートを68質量部投入し、撹拌下60℃で6時間反応させ、引き続き、イソプロピルアルコールを1質量部投入して、更に60℃で1時間撹拌することによって、ウレタン樹脂組成物を得た。
得られたウレタン樹脂組成物は、固形分;25質量%、粘度;600dPa・s、ウレタン樹脂の重量平均分子量は188,100であった。
攪拌機、還流器、温度計を有する反応装置に、ポリテトラメチレングリコール(数平均分子量;2,000)を100質量部、エチレングリコールを10質量部、N,N-ジメチルホルムアミドを380質量部、及び、4,4’-ジフェニルメタンジイソシアネートを53質量部投入し、撹拌下60℃で6時間反応させ、引き続き、イソプロピルアルコールを1質量部投入して、更に60℃で1時間撹拌することによって、ウレタン樹脂組成物を得た。
得られたウレタン樹脂組成物は、固形分;30質量%、粘度;800dPa・s、ウレタン樹脂の重量平均分子量は120,500であった。
合成例で用いた原料ポリオールの数平均分子量、シリコーン化合物(c1)の数平均分子量、ウレタン樹脂(A)の重量平均分子量 は、ゲル・パーミエーション・クロマトグラフィー(GPC)法により、下記の条件で測定した値を示す。
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」
合成例1で得られたウレタン樹脂組成物100質量部に対し、N,N-ジメチルホルムアミド(以下、「DMF」と略記する。)を40質量部、水酸基及びオキシエチレン構造(以下「EO構造」と略記する。)を有するシリコーン化合物(ダウ・東レコーニング株式会社製「SF-8427」、数平均分子量2,400、以下「c1-1」」と略記する。)を2質量部加えて配合液を作成し、厚さ(Wet)1mmとなるようにポリエチレンテレフタレート(PET)フィルムに塗布した。次いで、凝固浴(25℃の水)へ塗布基材を10分間浸漬させ、ウレタン樹脂を凝固させた。その後、この基材を50℃の水に60分間浸漬させて溶剤を洗浄した。洗浄後、基材を100℃で30分間熱風乾燥させ、多孔体を得た。
実施例1において、c1-1に代えて、水酸基及びオキシエチレン構造を有するシリコーン化合物(信越化学工業株式会社製「KF-6123」、数平均分子量2,200、以下「c1-2」」と略記する。)を用いた以外は、実施例1と同様にして多孔体を得た。
実施例1において、合成例1で得られたウレタン樹脂組成物に代えて、合成例2で得られたウレタン樹脂組成物を用いた以外は、実施例1と同様にして多孔体を得た。
実施例1において、c1-1に代えて、水酸基を有するシリコーン化合物(信越化学工業株式会社製「KF-6001」、数平均分子量1,800、以下「cR1-1」」と略記する。)を用いた以外は、実施例1と同様にして多孔体を得た。
実施例1において、c1-1に代えて、ドデシルベンゼンスルホン酸(以下「DBS」と略記する。)を用いた以外は、実施例1と同様にして多孔体を得た。
実施例で得られた多孔体の断面状態を、日本電子株式会社製走査型電子顕微鏡「JSM-IT500」(倍率:100倍)で観察し、セル形状(細さ、均一性)を確認し、最大横幅が70μm以下のセルが全体の60%を占めていれば「○」、それ以外は「×」と評価した。
実施例で得られた多孔体について、指触により風合いを確認し、ボリューム感、及び、反発感がある場合には「○」、それ以外は「×」と評価した。
Claims (3)
- ウレタン樹脂(A)、溶剤(B)、及び、成膜助剤(C)を含有するウレタン樹脂組成物を湿式成膜して多孔体を製造する方法であって、
前記ウレタン樹脂(A)が、ポリオール(a1)とポリイソシアネート(a2)と鎖伸長剤(a1-1)とをN,N-ジメチルホルムアミドを含む溶剤中で反応させる工程、
並びに、メタノール、エタノール、イソプロピルアルコール、イソブタノール、sec-ブタノール、及びターシャリーブタノールからなる群より選ばれる1種以上の溶剤を投入して撹拌する工程を含む方法により得られるものであり、
前記成膜助剤(C)が、オキシエチレン構造を有するシリコーン化合物(c1)であり、
前記シリコーン化合物(c1)の数平均分子量が、500~5,000の範囲であり、
前記ウレタン樹脂組成物を基材表面に塗布または含浸させる工程、及び、前記塗布面または含浸面に水または水蒸気を接触させる工程を有するものであることを特徴とする多孔体の製造方法。 - 前記シリコーン化合物(c1)が、更に、水酸基を有するものである請求項1記載の多孔体の製造方法。
- 前記シリコーン化合物(c1)の含有量が、前記ウレタン樹脂(A)100質量部に対して、0.1~30質量部の範囲である請求項1又は2記載の多孔体の製造方法。
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JP2019093763A JP7331454B2 (ja) | 2019-05-17 | 2019-05-17 | 多孔体の製造方法 |
TW109109118A TW202106779A (zh) | 2019-05-17 | 2020-03-19 | 多孔體之製造方法 |
KR1020200036744A KR102298393B1 (ko) | 2019-05-17 | 2020-03-26 | 다공체의 제조 방법 |
CN202010278642.3A CN112029404B (zh) | 2019-05-17 | 2020-04-10 | 多孔体的制造方法 |
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JP7331454B2 true JP7331454B2 (ja) | 2023-08-23 |
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JP5093875B2 (ja) * | 2006-08-04 | 2012-12-12 | 旭化成ケミカルズ株式会社 | 多孔質構造体 |
EP2248857B1 (en) * | 2008-02-25 | 2013-04-10 | DIC Corporation | Process for producing alcohol soluble urethane resin composition, polyurethane porous body, and moisture permeable film |
JP5516990B2 (ja) * | 2010-11-08 | 2014-06-11 | Dic株式会社 | 湿式成膜用ウレタン樹脂組成物、それを用いて得られる多孔体及び研磨パッドならびにそれらの製造方法 |
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CN109621282A (zh) * | 2019-01-23 | 2019-04-16 | 东莞市丰诚皮革有限公司 | 防滑透气瑜伽垫及制作方法 |
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