JPWO2020246132A1 - ウレタン樹脂組成物、及び、積層体 - Google Patents
ウレタン樹脂組成物、及び、積層体 Download PDFInfo
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Abstract
Description
(X)前記ウレタン樹脂組成物を気泡させて起泡液を得、この起泡液を離型紙上に塗布し、乾燥させ、前記基材(i)と貼り合わせる方法、
(Y)前記ウレタン樹脂組成物を起泡させ起泡液を得、この起泡液を、離型紙上に作製した表皮層上に塗布し、乾燥させ、前記基材(i)と貼り合わせる方法、
(Z)前記ウレタン樹脂組成物を起泡させ起泡液を得、この起泡液を前記基材(i)上に塗布し、乾燥させ、必要に応じて、その上に、離型紙上に作製した表皮層(iii)を貼り合わせる方法などが挙げられる。
ポリエーテル系ポリウレタンディスパージョン(DIC株式会社製「ハイドランWLS−120AR」、固形分50質量%、以下「PUD(A−1)」と略記する。)100質量部、増粘剤(Borchers社製「Borch Gel ALA」)2質量部、ステアリン酸アンモニウム2質量部、架橋剤(日清紡ケミカル株式会社製「カルボジライトSV−02」)4質量部、メトキシポリエチレングリコール(日油株式会社製「ユニオックスM−550」、重量平均分子量;550、以下「メトキシPEG(1)」と略記する。)5質量部を加え、メカニカルミキサーを使用して2,000rpmで撹拌し、空気を含ませることで、初期の体積に対し、1.5倍の体積にした起泡液を得た。
これを離型紙に塗布し、80℃で3分間乾燥させることで、厚さ300μmのウレタン発泡層を形成し、これをポリエステル繊維の不織布と貼り合わせることで、合成皮革を得た。
用いるウレタン樹脂(A)の種類、並びに、成膜助剤(C)の種類及び/又は使用量を表1に示す通りに変更した以外は、実施例1と同様にして合成皮革を得た。
成膜助剤(C)の重量平均分子量等は、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」
実施例及び比較例で得られた合成皮革の外観を観察し、クラックの有無を確認した。クラックがないものを「T」、クラックが確認されたものを「F」と評価した。
実施例及び比較例で得られた合成皮革を手で触り、以下のように評価した。
「T」:柔軟性と弾力がある
「F」:柔軟性が劣り、硬い。
実施例及び比較例で得られた合成皮革の表面に、2.5cm幅のホットメルトテープ(サン化成株式会社製「BW−2」)を載置し、150℃で30秒加熱し、ホットメルトテープを接着した。ホットメルトテープの幅に沿って試料を裁断した。この試料の一部を剥離し、基材とホットメルトテープとをチャックで挟み、島津オートグラフ「AG−1」(株式会社島津製作所製)を使用して、フルスケール5kg、ヘッドスピード20mm/分の条件にて剥離強度を測定し、1cm幅に換算した。剥離強度が、3kgf/cm以上である場合には「T」、それ以外の場合には「F」と評価した。
「PUD(A−2)」:ポリカーボネート系ポリウレタンディスパージョン(DIC株式会社製「ハイドランWLS−110AR」、固形分50質量%)
「PUD(A−3)」:エステル系ポリウレタンディスパージョン(DIC株式会社製「ハイドランADS−110」、固形分50質量%)
「メトキシPEG(2)」:メトキシPEG(重量平均分子量;1,000)
「PEG(1)」:ポリエチレングリコール(重量平均分子量;400)
「PEG(2)」:ポリエチレングリコール(重量平均分子量;1,000)
Claims (7)
- ウレタン樹脂(A)、水(B)、及び、成膜助剤(C)を含有するウレタン樹脂組成物であって、前記成膜助剤(C)が、ポリエチレングリコール(c1)、及び/又は炭素原子数が11以下のアルコキシ基を有するポリエチレングリコール(c2)であることを特徴とするウレタン樹脂組成物。
- 前記ポリエチレングリコール(c1)及び前記ポリエチレングリコール(c2)の重量平均分子量が、100〜4,000の範囲である請求項1記載のウレタン樹脂組成物。
- 前記ウレタン樹脂(A)が、アニオン性基を有するものである請求項1又は2記載のウレタン樹脂組成物。
- 更に、炭素原子数が10以上の疎水部を有する界面活性剤(D)を含有するものである請求項1〜3のいずれか1項記載のウレタン樹脂組成物。
- 前記界面活性剤(D)が、ステアリン酸塩である請求項4記載のウレタン樹脂組成物。
- 少なくとも、基材(i)、及び、請求項1〜5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発泡層(ii)を有することを特徴とする積層体。
- 前記発泡層(ii)が、前記ウレタン樹脂組成物を機械発泡することにより形成されたものである請求項6記載の積層体。
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JP2019107056 | 2019-06-07 | ||
JP2019107056 | 2019-06-07 | ||
PCT/JP2020/015726 WO2020246132A1 (ja) | 2019-06-07 | 2020-04-07 | ウレタン樹脂組成物、及び、積層体 |
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WO2020246132A1 (ja) | 2020-12-10 |
EP3943537A4 (en) | 2022-05-04 |
CN113840871B (zh) | 2023-08-11 |
US20220169887A1 (en) | 2022-06-02 |
JP6904486B2 (ja) | 2021-07-14 |
CN113840871A (zh) | 2021-12-24 |
KR102662080B1 (ko) | 2024-05-03 |
EP3943537A1 (en) | 2022-01-26 |
TW202104431A (zh) | 2021-02-01 |
KR20210135282A (ko) | 2021-11-12 |
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