JP2019529614A - 極細繊維不織布合成皮革用途のための耐薬品性pudおよびその方法 - Google Patents
極細繊維不織布合成皮革用途のための耐薬品性pudおよびその方法 Download PDFInfo
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Abstract
Description
1.耐トルエン性評価
下記の各ポリウレタン分散液4g(35重量%)を直径9.5cmの皿に添加し、24〜48時間保持して水を蒸発させる。水を除去した後、皿を130℃で20分間ベークする。次いで、ポリウレタン分散フィルムを切断し、秤量して(重量1(g))、次いで溶解のために130℃の還流トルエン中に入れる。3時間の溶解で、保持フィルムを130℃で20分間乾燥し、次いで秤量する(重量2(g))。重量2を重量1で割って、保持率(%)を計算する。
下記の各ポリウレタン分散液4g(35重量%)を直径9.5cmの皿に添加し、24〜48時間保持して水を蒸発させる。水を除去した後、皿を130℃で20分間ベークする。次いで、ポリウレタン分散フィルムを切断し、秤量して(重量1(g))、次いで溶解のために130℃の還流NaOH(10重量%)中に入れる。3時間の溶解で、保持フィルムを130℃で20分間乾燥し、次いで秤量する(重量2(g))。重量2を重量1で割って、保持率(%)を計算する。
極細繊維不織布を秤量し(重量1(g))、次いでポリウレタン分散液(25重量%)に10秒間浸漬し、続いて含浸させた極細繊維不織布をギャップ制御ローラーでプレスする。その後、含浸させた極細繊維不織布を90℃のオーブンで10分間、次いで150℃で20分間乾燥させた後、秤量する(重量2(g))。乾燥した極細繊維不織布を還流トルエン(約130℃)に約3時間浸漬し、130℃で20分間乾燥した後、秤量する(重量3(g))。保持率は、以下の式に従って計算する:(重量3−重量1/2)/(重量2−重量1)。各試料につき2回の試験を実施する。
1.例示の実施例1(IE1)
VORANOL(商標)9287ポリエーテルポリオール680gおよびCARBOWAX(商標)メトキシポリエチレングリコール20gを添加し、機械的分散機、滴下漏斗、およびガス導入用の管を備えた5000mlの丸三首ガラスフラスコ中で混合する。混合物を一晩窒素流下に置き、次いで130℃で1時間加熱して水を除去する。
例示のポリウレタン分散液実施例2(IE2)を、例示のポリウレタン分散液実施例1(IE1)を調製するのと同じ手順に従って、ただし異なる鎖延長剤、エチレンジアミンを使用して調製する。
比較のポリウレタン分散液実施例1(CE1)を、例示のポリウレタン分散液実施例1(IE1)を調製するのと同じ手順に従って、ただし異なるイソシネート、同じ濃度でイソホロンジイソシアネート266.4gを使用して調製する。
比較のポリウレタン分散液実施例2(CE2)は、Bayer Companyから市販されているIMPRANIL(商標)DL 1380脂肪族イソシアネート系ポリウレタン分散液である。
比較のポリウレタン分散液実施例3および4(CE3およびCE4)を、例示のポリウレタン分散液実施例1(IE1)を調製するのと同じ手順に従って、ただしジフェニルメタンジイソシアネート154gおよび異なる鎖延長剤を使用して調製する。
Claims (11)
- ポリウレタン分散液であって、
重合単位として、ポリウレタンプレポリマーの総乾燥重量に基づいて、25乾燥重量%〜40乾燥重量%のモノマー芳香族ジイソシアネート、および20乾燥重量%〜85乾燥重量%のポリエーテルポリオールを含むポリウレタンプレポリマーと、
アニオン性界面活性剤と、を含む、ポリウレタン分散液。 - 前記ポリウレタンプレポリマーが、重合単位として、前記ポリウレタンプレポリマーの総乾燥重量に基づいて、0.1乾燥重量%〜30乾燥重量%のポリエステルポリオールをさらに含む、請求項1に記載のポリウレタン分散液。
- 前記ポリウレタンプレポリマーが、3〜10パーセントの%NCOを有する、請求項1に記載のポリウレタン分散液。
- 有機溶剤が、前記ポリウレタンプレポリマーの調製に使用されない、請求項1に記載のポリウレタン分散液。
- 極細繊維不織布およびポリウレタン分散液を含む極細繊維不織布合成皮革であって、前記ポリウレタン分散液が、ポリウレタンプレポリマーおよびイオン性界面活性剤を含み、前記ポリウレタンプレポリマーが、重合単位として、前記ポリウレタンプレポリマーの総乾燥重量に基づいて、25乾燥重量%〜40乾燥重量%のモノマー芳香族ジイソシアネート、および20乾燥重量%〜85乾燥重量%のポリエーテルポリオールを含む、極細繊維不織布合成皮革。
- 前記ポリウレタンプレポリマーが、重合単位として、前記ポリウレタンプレポリマーの総乾燥重量に基づいて、0.1乾燥重量%〜30乾燥重量%のポリエステルポリオールをさらに含む、請求項5に記載の極細繊維不織布合成皮革。
- 前記ポリウレタンプレポリマーが、前記ポリウレタンプレポリマーの重量に基づいて、3〜10重量パーセントのイソシアネート含有量を有する、請求項5に記載の極細繊維不織布合成皮革。
- 前記有機溶剤が、前記ポリウレタンプレポリマーの調製に使用されない、請求項5に記載の極細繊維不織布合成皮革。
- 請求項1に記載のポリウレタン分散液に極細繊維不織布を含浸させる工程を含む、前記極細繊維不織布合成皮革を調製する方法。
- 前記含浸させた極細繊維不織布をトルエン溶解プロセスに供する工程をさらに含む、請求項9に記載の極細繊維不織布合成皮革を調製する方法。
- 前記含浸させた極細繊維不織布をアルカリ溶解プロセスに供する工程をさらに含む、請求項9に記載の極細繊維不織布合成皮革を調製する方法。
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EP4396257A1 (en) * | 2021-08-30 | 2024-07-10 | Dow Global Technologies LLC | Waterborne polyurethane dispersions for preparing polyurethane foam for synthetic leather and synthetic leather articles prepared with the same |
WO2024130549A1 (en) | 2022-12-20 | 2024-06-27 | Dow Global Technologies Llc | Artificial leather with cool surface feature |
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BR112019004422A2 (pt) | 2019-05-28 |
US20190375877A1 (en) | 2019-12-12 |
RU2019108142A (ru) | 2020-09-21 |
EP3510066A1 (en) | 2019-07-17 |
CN109689718A (zh) | 2019-04-26 |
MX2019002747A (es) | 2019-05-09 |
JP7051819B2 (ja) | 2022-04-11 |
TW201811921A (zh) | 2018-04-01 |
EP3510066A4 (en) | 2020-04-08 |
US20220251282A1 (en) | 2022-08-11 |
WO2018045546A1 (en) | 2018-03-15 |
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RU2741548C2 (ru) | 2021-01-26 |
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