JP2016533436A - ポリジオルガノシロキサンポリアミドを含む多成分繊維、不織布ウェブ、及び物品 - Google Patents
ポリジオルガノシロキサンポリアミドを含む多成分繊維、不織布ウェブ、及び物品 Download PDFInfo
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- JP2016533436A JP2016533436A JP2016519753A JP2016519753A JP2016533436A JP 2016533436 A JP2016533436 A JP 2016533436A JP 2016519753 A JP2016519753 A JP 2016519753A JP 2016519753 A JP2016519753 A JP 2016519753A JP 2016533436 A JP2016533436 A JP 2016533436A
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- JP
- Japan
- Prior art keywords
- nonwoven web
- multicomponent fiber
- polydiorganosiloxane
- melt processable
- copolymer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Description
−(CO)−(CO)−NH−基)の一部である。すなわち、コポリマー材料の骨格に沿った任意のカルボニル基は、別のカルボニル基に結合しており、かつオキサリル基の一部である。より具体的には、ポリジオルガノシロキサンポリオキサミドは、複数のアミノオキサリルアミノ基を有する。
繊維径
有効繊維径(EFD)は、Davies,C.N.、「The Separation of Airborne Dust and Particles」、Institution of Mechanical Engineers,London,Proceedings 1B,1952に記載されている方法に従って決定した。
直立MVTRは、ASTM E96−80に従い、Payneカップ変法を用いて測定した。直径3.8cmのサンプルを、それぞれ5.1cm2の楕円形開口部を有する、2枚のホイル接着剤リングの接着剤含有表面間に配置した。各リングの穴を注意深く位置合わせした。指圧を用いて、平坦で、しわがなく、かつ露出したサンプル内に空隙領域のない、ホイル/サンプル/ホイル組立体を形成した。
直立(乾燥)MVTR=(W1−W2)×(4.74×104)/T1
以下の試験手順を用いて倒立MVTRを測定した。直立MVTR手順について記載した通り、最終「乾燥」重量(W2)を得た後、水道水が試験サンプルに直接接触するようにジャーを逆さにした状態で、組立体を更に少なくとも18時間の曝露時間(T2)の間チャンバに戻した。次いで、サンプルをチャンバから取り出し、最終湿潤重量W3について直ちに0.01g単位で計量した。倒立湿潤MVTR(24時間当たり、サンプルの面積1平方メートル当たりの透過水蒸気(グラム))を以下の式を用いて計算することができる。
倒立(湿潤)MVTR=(W2−W3)×(4.74×104)/T2
欧州試験規格EN20811を用いて、透水耐性を測定した。簡潔に述べると、10cm×10cmの裏地サンプルを、Textest Instruments FX3000(Textest Instruments(Schwerzenbach,Switzerland))の試験ヘッドに固定し、20mbar(2kPa)の一定水圧に片面を曝した。サンプルを透水についてモニターした。第3の位置に水が透過するまでの時間を記録した。
米国特許第5,238,733号(Josephら)の実施例1に記載のプロセスと同様のメルトブロープロセスを用いてウェブを調製した。310℃に設定したBrabender円錐形二軸押出機によってPPを送り出して繊維のコア層を形成し、同様に310℃に設定したBonnot押出機によってSPOx樹脂を送り出して繊維のシェル層を形成した。コア及びシェルポリマーを3層フィードブロックに組み合わせ、10穴/cmの穿孔オリフィスダイを通して押し出した。コレクタは、ダイから約18cmであった。押し出されたコア/シェル繊維を、坪量113g/m2及び有効繊維径7.7マイクロメートルの不織布ウェブに成形した。
外層(例えば、シェル層)がSPOxを含み、コアがSPOx以外の(例えば、第2の)溶融加工可能なポリマーになるように、表2に記載の通り、実施例1と同様に別の実施例を調製した。
100% SPOx繊維(比較例1)及び100% TPU繊維(比較例2)を用いてウェブを調製した。更に、First Quality(34gsm SMS、style SM3397039)から市販されている不織布を試験した(比較例3)。
Claims (30)
- コアと外層とを含む多成分繊維であって、前記外層の少なくとも一部分が、ポリジオルガノシロキサンポリアミドコポリマーを含む第1の溶融加工可能な組成物を含み、前記コアが、ポリジオルガノシロキサンポリマーを含まない第2の溶融加工可能な組成物を含み、前記多成分繊維が、5〜25重量%のポリジオルガノシロキサンポリアミドコポリマーを含む、多成分繊維。
- 前記ポリジオルガノシロキサンポリオキサミドコポリマーが、次式I:
各R1は、独立して、アルキル、ハロアルキル、アラルキル、アルケニル、アリール、又はアルキル、アルコキシ、若しくはハロで置換されたアリールであり、前記R1基の少なくとも50パーセントはメチルであり、
各Yは、独立して、アルキレン、アラルキレン、又はこれらの組み合わせであり、
Gは、式R3HN−G−NHR3のジアミンから2つの−NHR3基を除いたものに相当する二価残基であり、
R3は、水素若しくはアルキルであるか、又はR3は、両方結合されるG及び窒素と共に複素環式基を形成し、
nは、独立して、40〜1500の整数であり、
pは、1〜10の整数であり;
アスタリスク(*)は、繰り返し単位がコポリマーの別の基に結合する部位を示す)の少なくとも2つの繰り返し単位を含む、請求項1に記載の多成分繊維。 - 各R1がメチルであり、R3が水素である、請求項2に記載の多成分繊維。
- 前記ポリジオルガノシロキサンポリオキサミドコポリマーが、pが1に等しい第1の繰り返し単位と、pが少なくとも2である第2の繰り返し単位とを有する、請求項2又は3に記載の多成分繊維。
- Gが、アルキレン、ヘテロアルキレン、アリーレン、アラルキレン、ポリジオルガノシロキサン、又はこれらの組み合わせである、請求項2〜4のいずれか一項に記載の多成分繊維。
- Yが、アルキレンである、請求項2〜5のいずれか一項に記載の多成分繊維。
- nが、50〜300の整数である、請求項2〜6のいずれか一項に記載の多成分繊維。
- 前記第1の溶融加工可能な組成物が、感圧接着剤ではない、請求項1〜7のいずれか一項に記載の多成分繊維。
- 前記第2の溶融加工可能な組成物が、ポリオレフィンポリマー、ポリオレフィンエラストマー、ポリウレタンエラストマー、又はこれらの混合物から選択される、請求項1〜8のいずれか一項に記載の多成分繊維。
- 前記第2の溶融加工可能な組成物が、ポリオレフィンであり、前記多成分繊維が、75重量%〜95重量%のポリオレフィンを含む、請求項9に記載の多成分繊維。
- 前記ポリオレフィンが、ポリプロピレンホモポリマー又はコポリマーである、請求項10に記載の多成分繊維。
- 前記第2の溶融加工可能な組成物が、ポリオレフィンポリマーのブレンドである、請求項9に記載の多成分繊維。
- 前記ポリオレフィンエラストマーが、5〜65重量%の範囲の量で前記ブレンド中に存在する、請求項12に記載の多成分繊維。
- 請求項1〜13のいずれか一項に記載の多成分繊維を含む、不織布ウェブ。
- 前記不織布ウェブが、少なくとも0.10、又は0.20、又は0.30mmの厚さを有する、請求項14に記載の不織布ウェブ。
- 前記多成分繊維が、約5〜50マイクロメートルの範囲の平均繊維径を有する、請求項14又は15に記載の不織布ウェブ。
- 前記多成分繊維が、15マイクロメートル以下の平均繊維径を有する、請求項16に記載の不織布ウェブ。
- 前記不織布ウェブが、25〜200g/m2の範囲の坪量を有する、請求項14〜17のいずれか一項に記載の不織布ウェブ。
- 前記不織布ウェブが、少なくとも1000、3000、又は5000g/m2/24hの直立MVTRを有する、請求項14〜18のいずれか一項に記載の不織布ウェブ。
- 前記不織布ウェブが、少なくとも10,000g/m2/24hの倒立MVTRを有する、請求項14〜19のいずれか一項に記載の不織布ウェブ。
- 前記不織布ウェブが、EN20811に従って、少なくとも5分間又は10分間の透水耐性を有する、請求項14〜20のいずれか一項に記載の不織布ウェブ。
- 前記不織布ウェブが、抗菌剤を更に含む、請求項14〜21のいずれか一項に記載の不織布ウェブ。
- 少なくとも10,000g/m2/24hの倒立MVTR、及びEN20811に従って20mbar(2kPa)の水圧に対して少なくとも10分間の透水耐性を有する、不織布ウェブ。
- 前記不織布ウェブが、請求項1〜13のいずれか一項に記載の多成分繊維を含む、請求項23に記載の不織布ウェブ。
- 裏地を含む医療用物品であって、前記裏地が、請求項14〜24のいずれか一項に記載の不織布ウェブを含む、医療用物品。
- 前記医療用物品が、テープ、創傷包帯、及び切開用ドレープからなる群から選択される、請求項25に記載の医療用物品。
- 前記不織布裏地の主表面上に配置される皮膚接触材料を更に含む、請求項25又は26に記載の医療用物品。
- 前記皮膚接触材料が、接着剤、吸収剤、又はこれらの組み合わせである、請求項27に記載の医療用物品。
- 前記吸収剤が、親水コロイド、ポリマーゲル、又は発泡体である、請求項28に記載の医療用物品。
- 多成分マイクロ繊維を作製する方法であって
ポリジオルガノシロキサンポリアミドコポリマーを含む第1の溶融加工可能な組成物を準備する工程と、
ポリジオルガノシロキサンポリマーを含まない第2の溶融加工可能な組成物を準備する工程と、
前記第1及び前記第2の溶融加工可能な組成物をメルトブローして、コア及び外層を含む多成分繊維を形成する工程と、を含み、前記外層の少なくとも一部分が、前記第1の溶融加工可能な組成物を含み、前記コアが、前記第2の溶融加工可能な組成物を含み、前記多成分繊維が、5〜25重量%のポリジオルガノシロキサンポリアミドを含む、方法。
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US61/886,690 | 2013-10-04 | ||
PCT/US2014/057080 WO2015050749A1 (en) | 2013-10-04 | 2014-09-24 | Multi-component fibers, nonwoven webs, and articles comprising a polydiorganosiloxane polyamide |
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US (1) | US20160228297A1 (ja) |
EP (1) | EP3052679A1 (ja) |
JP (1) | JP2016533436A (ja) |
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