JP2006528544A - 熱可塑性接着剤によって結合された微粒子を有する粉末状吸水性ポリマー - Google Patents
熱可塑性接着剤によって結合された微粒子を有する粉末状吸水性ポリマー Download PDFInfo
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Abstract
【解決手段】0.01〜20重量%の200μm未満の粒径を有する微粒子と、0.001〜10重量%の熱可塑性接着剤と、60〜99.998重量%の200μm以上の粒径を有する吸水性ポリマー粒子を含み、微粒子が熱可塑性接着剤によって吸収性ポリマー粒子の表面に結合されており、粉末状吸水性ポリマーが、1〜13の流動値または6以下のダスト率を有する粉末状吸水性ポリマー;粉末状吸水性ポリマーの製造方法、該製造方法によって得られる粉末状吸水性ポリマー、供給方法、複合体、化学製品、熱可塑性接着剤の使用。
【選択図】なし
Description
好ましいシリケートは、Hollemann,Wiberg共著、無機化学教本(Lehrbuch der Anorganischen Chemie)、第91〜100版、Walter de Gruyter−Verlag、750〜783頁に開示されている天然または合成シリケートである。上記書籍の該当部分は、この参照によって本発明の開示の一部をなすものとする。
(α1)0.1〜99.999重量%、好ましくは20〜98.99重量%、特に好ましくは30〜98.95重量%のエチレン性不飽和酸性基含有モノマーまたはその塩、またはエチレン性不飽和プロトン化または第4級化窒素含有モノマー、またはそれらの混合物であって、少なくともエチレン性不飽和酸性基含有モノマー、好ましくはアクリル酸を含む混合物が特に好ましい。
(α2)0〜70重量%、好ましくは1〜60重量%、特に好ましくは1〜40重量%の、(α1)と共重合可能なモノエチレン性不飽和モノマー。
(α3)0.001〜10重量%、好ましくは0.01〜7重量%、特に好ましくは0.05〜5重量%の1種以上の架橋剤、
(α4)0〜30重量%、好ましくは1〜20重量%、特に好ましくは5〜10重量%の水溶性ポリマー。
(α5)0〜20重量%、好ましくは0.01〜7重量%、特に好ましくは0.05〜5重量%の1種以上の添加剤((α1)〜(α5)の合計重量は100重量%である)。
P1:1〜13、好ましくは3〜9、特に好ましくは4〜8、さらに好ましくは5〜7の流動値(FFC値)、または
P2:6以下、好ましくは4以下、特に好ましくは2以下のダスト率、を有する。
P3 1〜17、好ましくは1.1〜15、特に好ましくは1.5〜10の摩損指数Ai、
P4 0〜7、好ましくは1.1〜6、特に好ましくは1.5〜3の摩損差Ad、
P5 ERT441.1−99による保持容量が少なくとも20g/g、好ましくは少なくとも25g/g、特に好ましくは少なくとも25g/g、さらに好ましくは27〜35g/g、の少なくとも1つ、好ましくは全てを有することが好ましい。
FFC値の測定;
FFC値は、サイロ内のバルク材料の流動特性に関する情報である。FFC値の測定ではバルク材料に異なる応力を与える。
FFC<1 流動せず
1<FFC<2 凝集性が強い
2<FFC<4 凝集性が見られる
4<FFC<10 わずかに流動
10<FFC 自由に流動
ダスト率は、Palas社(ドイツ)の装置「Dust View」を使用して測定した。すなわち、サンプル30gをロート管に配置する。測定の開始時にロートフラップが自動的に開き、サンプルがダスト貯槽に入る。レーザービームの減少(伝導の減少)をダストの形成によって測定する。この値によって、ダスト率(曇り)を1〜100%で定量することができる。ダスト率は、測定開始時の開始値と、浮遊部分を測定するために30秒後に測定されたダスト値によって与えられる。従って、ダスト率は開始値とダスト値の合計によって与えられる。
図1に示す試験装置を使用する。試験装置は、サンプルをプローブ室2に導入するためのロート1を有する。ロートとプローブ吸収室2との間には導管が設けられ、導管は、充填弁V1と、充填弁V1の下流に配置されたガス調整弁V2を有する供給ラインを含む。ガス調整弁V2によって、4.3バールの圧力がサンプル吸収室2に印加される。サンプル吸収室2は、直径が9cmで長さが16cmの円筒からなる。緩い円錐型の下部領域が円筒に取り付けられており、下部領域は直径が4cmの下部開口部を有する。下部領域には長さが2cmで直径が4cmのパイプが取り付けられており、パイプは長さが4.5cmで直径が1.75cmの緩い円錐型のサイクルにつながっている。サイクルには出口弁V3が取り付けられている。出口弁V3には、長さが4.5cmの90度で湾曲した部分を介して内径が10mmで全長が1101cmのパイプ導管が続いている。パイプ導管は30cmの直線部分で始まり、長さが4.5cmの90度で湾曲した部分を介して連結された、それぞれが60cmの長さを有する16個の直線部分が続き、16個の直線部分は長さが4.5cmの180度で湾曲した部分を介してつながれている。16個の直線部分には、長さが4.5cmの90度で湾曲した部分を介して長さが60cmの直線部分が取り付けられている。この直線部分はサンプル回収室4につながっており、サンプル回収室4は、上部カバーの代わりに、サンプルの粒径よりも実質的に小さい孔径を有するフィルタバッグが適用されていることを除いてはサンプル吸収室2と同様な構成を有する。サンプル回収室4はサンプル除去弁V4によって下部で密閉されている。上記試験装置の全ての金属部品は316ステンレスからなる。チューブは標準的なストックパイプである。試験装置の各部品の内表面は滑らかである。弁には、Milwaukee Valve社(米国)の20 SSOR−02−LL−9102を使用した。
工程1−サンプルの投入;
弁V1,V4を開き、弁V2,V3を閉じる。ロート1を使用してサンプル50gをプローブ吸収室2に投入する。
工程2−サンプルの輸送;
弁を以下の順序で作動させる。a)弁V1を閉じ、b)弁V2を開き、c)弁V3を閉じる。サンプルの通過によるパイプの振動が見られなくなった後、以下の弁位置を設定する。a)弁V2を閉じ、b)弁V1を開き、c)弁V3を閉じる。
サンプルを除去するために、弁V4の下に容器を配置し、弁V4を慎重に開くことによってサンプルを調査のために容器に入れる。次に、弁V4を再び閉じる。
摩損指数Aは「Ai=SafterA/SbeforeA」によって与えられる。
摩損差Adは「Ad=SafterA−SbeforeA」によって与えられる。
以下の実施例では、シュトックハウゼン(Stockhausen GmbH&Co.KG)社から商標登録FAVOR Z3050として市販されている粒子状軽度架橋部分中和ポリアクリル酸を原料として使用した。このポリアクリル酸は、33g/gの保持容量と3.7のダスト率を有する。
原料1000gと表1に記載した量の微粒子と熱可塑性接着剤を垂直ミキサー(MTI−Mischtechnik Industrieanlagen社、「LM 1.5/5」)に入れ、25重量%エチレン炭酸塩水溶液40gと750rpmで混合した。
Claims (25)
- 0.01〜20重量%の200μm未満の粒径を有する微粒子と、
0.001〜10重量%の熱可塑性接着剤と、
60〜99.998重量%の200μm以上の粒径を有する吸水性ポリマー粒子と、を含み、
前記微粒子が前記熱可塑性接着剤によって前記吸収性ポリマー粒子の表面に結合されており、前記粉末状吸水性ポリマーが1〜13の流動値(FFC)または6以下のダスト率を有することを特徴とする粉末状吸水性ポリマー。 - 前記粉末状吸水性ポリマーの総重量に基づいて、1〜13の流動値(FFC)及び6以下のダスト率を有することを特徴とする請求項1に記載の粉末状吸水性ポリマー。
- 前記熱可塑性接着剤が、少なくとも50℃、好ましくは少なくとも60℃、さらに好ましくは少なくとも70℃のISO 11357による融点を有することを特徴とする請求項1または2に記載の粉末状吸水性ポリマー。
- 前記熱可塑性接着剤が、2,000Pa・s未満の27スピンドルを使用したブルックフィールド(ASTM E28)による160℃での溶融粘度を有することを特徴とする請求項1〜3のいずれか1項に記載の粉末状吸水性ポリマー。
- 前記熱可塑性接着剤が、少なくとも10重量%、好ましくは少なくとも50重量%、特に好ましくは少なくとも90重量%の重縮合体を含むことを特徴とする請求項1〜4のいずれか1項に記載の粉末状吸水性ポリマー。
- 前記重縮合体がポリエステルであることを特徴とする請求項5に記載の粉末状吸水性ポリマー。
- 前記微粒子が、前記微粒子の重量に基づいて少なくとも80重量%の有機微粒子を含むことを特徴とする請求項1〜6のいずれか1項に記載の粉末状吸水性ポリマー。
- 前記微粒子が、前記微粒子の重量に基づいて少なくとも80重量%の無機微粒子を含むことを特徴とする請求項1〜7のいずれか1項に記載の粉末状吸水性ポリマー。
- 表面架橋剤によって表面領域において二次架橋されていることを特徴とする請求項1〜8のいずれか1項に記載の粉末状吸水性ポリマー。
- 前記表面架橋剤が少なくとも1種の有機化合物または少なくとも1種の多価金属カチオンを含むことを特徴とする請求項9に記載の粉末状吸水性ポリマー。
- 少なくとも30重量%の、部分的に中和された架橋ポリアクリル酸、好ましくは60〜80モル%が中和された架橋ポリアクリル酸を含み、以下の特性;
P1 1〜13の流動値(FFC)、
P2 6以下のダスト率、
P3 1〜17の摩損指数Ai、
P4 0〜7の摩損差Ad、
P5 ERT441.1−99による保持容量が少なくとも20g/g、
の少なくとも1つを有することを特徴とする粉末状吸水性ポリマー。 - 成分として、0.01〜20重量%の200μm未満の粒径を有する微粒子と、0.001〜10重量%の熱可塑性接着剤と、60〜99.998重量%の200μm以上の粒径を有する吸水性ポリマー粒子と、を120〜250℃、好ましくは150〜220℃、特に好ましくは170〜200℃の温度で接触させることを特徴とする粉末状吸水性ポリマーの製造方法。
- 前記成分を連続供給混合オーブン内で接触させることを特徴とする請求項12に記載の粉末状吸水性ポリマーの製造方法。
- 前記オーブンが可動加熱供給手段であることを特徴とする請求項13に記載の粉末状吸水性ポリマーの製造方法。
- さらなる成分として二次架橋剤を接触させることを特徴とする請求項12〜14のいずれか1項に記載の粉末状吸水性ポリマーの製造方法。
- 前記二次架橋剤と前記熱可塑性接着剤を同時にその他の成分と接触させることを特徴とする請求項15に記載の粉末状吸水性ポリマーの製造方法。
- 少なくとも前記二次架橋剤が液相に存在していることを特徴とする請求項15または16に記載の粉末状吸水性ポリマーの製造方法。
- 請求項12〜17のいずれか1項に記載の製造方法によって得られる粉末状吸水性ポリマー。
- 請求項11に定義した特性P1〜P5の少なくとも1つを有することを特徴とする請求項18に記載の粉末状吸水性ポリマー。
- 前記粉末状吸水性ポリマーの少なくとも50重量%が50〜2,000μmの粒径を有することを特徴とする請求項1〜11、18、19のいずれか1項に記載の粉末状吸水性ポリマー。
- 請求項1〜12、18、19のいずれか1項に記載の粉末状吸水性ポリマーを流路を介して流すことを特徴とする輸送方法。
- 前記流路が、吸水性ポリマーを製造するための装置または吸水性ポリマーの供給装置の一部を構成していることを特徴とする請求項21に記載の輸送方法。
- 請求項1〜12、18、19のいずれか1項に記載の粉末状吸水性ポリマーを含むことを特徴とする複合体。
- 請求項1〜12、18、19のいずれか1項に記載の粉末状吸水性ポリマーを含むことを特徴とする化学製品。
- 熱可塑性接着剤の、前記熱可塑性接着剤を含む粉末状吸水性ポリマーの流動値(FFC)またはダスト率を前記熱可塑性接着剤を含まない粉末状吸水性ポリマーに対して変化させるための使用。
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PCT/EP2004/008184 WO2005011860A2 (de) | 2003-07-25 | 2004-07-22 | Pulverförmige, wasserabsorbierende polymere mit mittels thermoplastischen klebstoffen gebundenen feinteilchen |
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JP2011522679A (ja) * | 2008-06-20 | 2011-08-04 | ザ プロクター アンド ギャンブル カンパニー | 不動化吸収性材料を有する吸収性構造体 |
JP2013521962A (ja) * | 2010-03-24 | 2013-06-13 | ビーエーエスエフ ソシエタス・ヨーロピア | 超薄型流体吸収性コア |
KR20150050565A (ko) | 2012-08-27 | 2015-05-08 | 가부시키가이샤 닛폰 쇼쿠바이 | 입자상 흡수제 및 그의 제조 방법 |
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JP2011522679A (ja) * | 2008-06-20 | 2011-08-04 | ザ プロクター アンド ギャンブル カンパニー | 不動化吸収性材料を有する吸収性構造体 |
JP2013521962A (ja) * | 2010-03-24 | 2013-06-13 | ビーエーエスエフ ソシエタス・ヨーロピア | 超薄型流体吸収性コア |
KR20150050565A (ko) | 2012-08-27 | 2015-05-08 | 가부시키가이샤 닛폰 쇼쿠바이 | 입자상 흡수제 및 그의 제조 방법 |
US10196500B2 (en) | 2012-08-27 | 2019-02-05 | Nippon Shokubai Co., Ltd. | Particulate water absorbing agent and process for producing same |
Also Published As
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US20070066754A1 (en) | 2007-03-22 |
US8288002B2 (en) | 2012-10-16 |
DE10334286A1 (de) | 2005-03-03 |
KR20060059983A (ko) | 2006-06-02 |
KR101044581B1 (ko) | 2011-06-29 |
US20110015601A1 (en) | 2011-01-20 |
CN100551447C (zh) | 2009-10-21 |
EP1648603B1 (de) | 2014-06-11 |
BRPI0412852A (pt) | 2006-10-03 |
TW200523017A (en) | 2005-07-16 |
WO2005011860A3 (de) | 2006-05-04 |
DE10334286B4 (de) | 2006-01-05 |
WO2005011860A2 (de) | 2005-02-10 |
BRPI0412852B1 (pt) | 2016-07-26 |
EP1648603A2 (de) | 2006-04-26 |
US20130001468A1 (en) | 2013-01-03 |
US7842386B2 (en) | 2010-11-30 |
JP4829786B2 (ja) | 2011-12-07 |
CN1845763A (zh) | 2006-10-11 |
US8518541B2 (en) | 2013-08-27 |
TWI371311B (en) | 2012-09-01 |
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