JP2021130804A - リサイクル可能な低付着性ポリウレタン材料 - Google Patents
リサイクル可能な低付着性ポリウレタン材料 Download PDFInfo
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Abstract
Description
前記低表面エネルギー化合物は、有機フッ素化合物又は有機シリコーン化合物から選ばれる。
プレポリマーに低表面エネルギー化合物を加えて、重縮合反応を行うステップ(2)と、
最後に、鎖延長剤を加えて反応させ、反応終了後、硬化させてポリウレタン材料を得るステップ(3)と、を含む。
(1)ソフトモノマー、鎖延長剤、ハードモノマー及び触媒を溶剤に分散させ、反応させてプレポリマーを形成する。
具体的には、表1の配合比でソフトモノマーと鎖延長剤を四つ口フラスコに加えて、均一に混合した。次に、撹拌しながらハードモノマーを加え、さらに触媒と溶剤を加えた。反応系の温度を70〜85℃、好ましくは80℃に上げて、保温したまま2h反応させて、プレポリマーを形成した。
(2)プレポリマーに低表面エネルギー化合物を加えて、重縮合反応を行う。
具体的には、ステップ(1)のプレポリマーに低表面エネルギー化合物を加えて、2h反応させ続け、低表面エネルギー化合物とステップ(1)のプレポリマーを重縮合反応させ、低表面エネルギーセグメントを生成した。
(3)最後に、鎖延長剤を加えて反応させ、反応終了後、硬化させてポリウレタン材料を得る。
重縮合反応が終了した後、反応系を40℃に降温し、次に一定量の鎖延長剤を加えて、50℃で12h反応させた。反応終了後、20〜70℃で1〜24hベークして硬化させると、最終的なポリウレタン材料を得た。
実際に調製する際に、ステップ(1)で使用される溶剤は、ブタノン、アセトン、N,N−ジメチルホルムアミド、N,N−ジメチルアセトアミドから選ばれる少なくとも1種であり、その使用量は、少なくともソフトモノマー、鎖延長剤及びハードモノマーを均一に分散できるほどである。ステップ(3)で加える鎖延長剤は、好ましくは水である。
比較として、以下、低表面エネルギー化合物を添加せず、ハードモノマー、ソフトモノマー、鎖延長剤及び触媒だけで製造されるポリウレタン材料を提供し、原料の詳細を表7の比較例1に示し、その調製方法は以上と同様であった。
Claims (10)
- リサイクル可能な低付着性ポリウレタン材料であって、原料として、
ハードモノマー25重量%〜40重量%、ソフトモノマー45重量%〜65重量%、低表面エネルギー化合物1重量%〜25重量%、鎖延長剤及び触媒を含み、
前記低表面エネルギー化合物は、有機フッ素化合物又は有機シリコーン化合物から選ばれる、ことを特徴とするリサイクル可能な低付着性ポリウレタン材料。 - 前記有機フッ素化合物は、パーフルオロポリエーテルアルコール、トリデカフルオロ−n−オクタノール及びヘキサフルオロブタノールから選ばれる少なくとも1種である、ことを特徴とする請求項1に記載のリサイクル可能な低付着性ポリウレタン材料。
- 前記有機シリコーン化合物は、アミノシリコーンオイル及びヒドロキシシリコーンオイルから選ばれる少なくとも1種である、ことを特徴とする請求項1に記載のリサイクル可能な低付着性ポリウレタン材料。
- 前記ハードモノマーは、トルエン−2,4−ジイソシアネート、ジフェニルメタンジイソシアネート、ヘキサメチレンジイソシアネート、ジシクロヘキシルメタンジイソシアネート、1,4−シクロヘキサンジイソシアネート及びイソフルロンジイソシアネートから選ばれる少なくとも1種である、ことを特徴とする請求項1に記載のリサイクル可能な低付着性ポリウレタン材料。
- 前記ソフトモノマーは、ポリエーテルグリコール及び/又はポリエステルジオールから選ばれる、ことを特徴とする請求項4に記載のリサイクル可能な低付着性ポリウレタン材料。
- 前記鎖延長剤は、1,4−ブタンジオール、エチレングリコール、ジエチレングリコール、エチレンジアミン及び水から選ばれる少なくとも1種である、ことを特徴とする請求項5に記載のリサイクル可能な低付着性ポリウレタン材料。
- 前記触媒は有機スズ触媒から選ばれる、ことを特徴とする請求項6に記載のリサイクル可能な低付着性ポリウレタン材料。
- ポリウレタン材料の原料中、前記触媒は0〜0.05重量%である、ことを特徴とする請求項7に記載のリサイクル可能な低付着性ポリウレタン材料。
- リサイクル可能な低付着性ポリウレタン材料の調製方法であって、
ソフトモノマー、鎖延長剤、ハードモノマー及び触媒を溶剤に分散させ、反応させてプレポリマーを形成するステップ(1)と、
プレポリマーに低表面エネルギー化合物を加えて、重縮合反応を行うステップ(2)と、
最後に、鎖延長剤を加えて反応させ、反応終了後、硬化させてポリウレタン材料を得るステップ(3)と、を含む、ことを特徴とする調製方法。 - ステップ(2)の前記重縮合反応の温度は70〜80℃である、ことを特徴とする請求項9に記載の調製方法。
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Application Number | Priority Date | Filing Date | Title |
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CN202010035474.5 | 2020-01-14 | ||
CN202010035474.5A CN111217984A (zh) | 2020-01-14 | 2020-01-14 | 一种可循环利用的低粘附聚氨酯材料及其制备方法 |
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CN116515379A (zh) * | 2023-05-16 | 2023-08-01 | 江苏晨光涂料有限公司 | 一种生物基超疏水导电防腐聚氨酯涂层及其制备方法 |
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