JP2017538848A - 凝集した充填剤粒子の調製方法 - Google Patents
凝集した充填剤粒子の調製方法 Download PDFInfo
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- JP2017538848A JP2017538848A JP2017542318A JP2017542318A JP2017538848A JP 2017538848 A JP2017538848 A JP 2017538848A JP 2017542318 A JP2017542318 A JP 2017542318A JP 2017542318 A JP2017542318 A JP 2017542318A JP 2017538848 A JP2017538848 A JP 2017538848A
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- aqueous suspension
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- C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
- C09C3/10—Treatment with macromolecular organic compounds
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Abstract
Description
a)それぞれが少なくとも1種の充填剤材料を含む少なくとも2種の水性懸濁液を提供する工程であって、
i)第1の水性懸濁液S1は少なくとも1種の凝集添加剤Aを含み、および
ii)第2の水性懸濁液S2は凝集添加剤Aとは異なる少なくとも1種の凝集添加剤Bを含み、および
iii)第1の水性懸濁液S1および第2の水性懸濁液S2中の少なくとも1種の充填剤材料は本質的に同じであることを特徴とする、工程、ならびに
b)工程a)で提供された少なくとも2種の水性懸濁液を同時に一緒にすることによって組み合わせて、凝集した充填剤粒子の水性懸濁液SMを形成する工程であって、第1の水性懸濁液および第2の水性懸濁液中の少なくとも1種の充填剤材料の質量比S1:S2は、1:100から100:1である工程
を含む。
本発明の要旨において、「凝集添加剤」は、懸濁充填剤粒子にフロックと呼ばれる凝集塊を形成させることによって凝集を促進することができる化合物である。凝集添加剤は、別の添加剤、好ましくは別の凝集添加剤および/または充填剤材料のみとの組み合わせで凝集を生じ得る。凝集が充填剤材料のみで起こる場合、この凝集は、本発明の方法の組み合わせ工程b)後に生じる凝集と区別することができる。例えば、方法工程b)の後に形成されるフロックは、1種の凝集剤および鉱物充填剤のみから生成されたフロックとは異なる粒径を有し得る。
本発明の方法の工程a)によれば、それぞれが少なくとも1種の充填剤材料を含む少なくとも2種の水性懸濁液が提供される。
本発明による方法の工程i)によれば、第1の水性懸濁液S1は少なくとも1種の凝集添加剤Aを含む。
本発明の方法の工程ii)によれば、第2の水性懸濁液S2は、凝集添加剤Aとは異なる少なくとも1種の凝集添加剤Bを含む。
本発明によれば、凝集した充填剤粒子の調製方法が提供され、
a)それぞれが少なくとも1種の充填剤材料を含む少なくとも2種の水性懸濁液を提供する工程であって、
i)第1の水性懸濁液S1は少なくとも1種の凝集添加剤Aを含み、および
ii)第2の水性懸濁液S2は凝集添加剤Aとは異なる少なくとも1種の凝集添加剤Bを含み、および
iii)第1の水性懸濁液S1および第2の水性懸濁液S2中の少なくとも1種の充填剤材料は本質的に同じであることを特徴とする、工程、ならびに
b)工程a)で提供された少なくとも2種の水性懸濁液を同時に一緒にすることによって組み合わせて、凝集した充填剤粒子の水性懸濁液SMを形成する工程であって、第1の水性懸濁液および第2の水性懸濁液中の少なくとも1種の充填剤材料の質量比S1:S2は、1:100から100:1である工程
を含む。
A1)少なくとも1種の充填剤材料の第1の水性懸濁液を提供すること、および
A2)少なくとも1種の凝集添加剤Aを工程A1)の第1の水性懸濁液に添加すること
によって調製される。
A1’)少なくとも1種の凝集添加剤Aを水と混合すること、および
A2’)少なくとも1種の充填剤材料を工程A1’)の第1の水性懸濁液に添加すること
によって調製される。
B1)少なくとも1種の充填剤材料の第2の水性懸濁液を提供すること、および
B2)少なくとも1種の凝集添加剤Bを工程B1)の第2の水性懸濁液に添加すること
によって調製される。
B1’)少なくとも1種の凝集添加剤Bを水と混合すること、および
B2’)少なくとも1種の充填剤材料を工程B1’)の第2の水性懸濁液に添加すること
によって調製される。
a)それぞれが少なくとも1種の充填剤材料を含む少なくとも2種の水性懸濁液を提供する工程であって、
i)第1の水性懸濁液S1は少なくとも1種の凝集添加剤Aを含み、および
ii)第2の水性懸濁液S2は凝集添加剤Aとは異なる少なくとも1種の凝集添加剤Bを含み、および
iii)第1の水性懸濁液S1および第2の水性懸濁液S2中の少なくとも1種の充填剤材料は本質的に同じであることを特徴とする、工程、ならびに
b)工程a)で提供された少なくとも2種の水性懸濁液を同時に一緒にすることによって組み合わせて、凝集した充填剤粒子の水性懸濁液SMを形成する工程であって、第1の水性懸濁液および第2の水性懸濁液中の少なくとも1種の充填剤材料の質量比S1:S2は、1:100から100:1であり、
少なくとも1種の充填剤材料は、炭酸カルシウム含有材料、好ましくは重質炭酸カルシウムおよび/または沈降炭酸カルシウムから選択され、
少なくとも1種の凝集添加剤Aはカチオン性デンプンであり、
少なくとも1種の凝集添加剤Bはカルボキシメチルセルロースである、工程を含む。
本発明の別の態様によれば、本発明による方法によって得られる凝集した充填剤粒子懸濁液が提供され、充填剤粒子は、単峰性粒径分布および/または40μm未満の半値全幅(FWHM)として表される体積で定義された粒径多分散性および/または5から50μmの範囲内の体積決定メジアン粒径(d50)を有することを特徴とする。
1.測定方法
以下では、例で実施される測定方法について説明する。
使用された充填剤材料、即ち本発明の方法の工程a)の前の充填剤材料の粒径分布は、Fraunhofer光散乱近似を用いて、Malvern Mastersizer 2000 Laser Diffraction System(Malvern Instruments Plc.,Great Britain)を用いて測定した。当業者に知られている方法および器具は、充填剤および他の粒状材料の粒径を決定するために一般的に使用される。
懸濁液S1、S2およびSM中の充填剤粒子の充填剤材料の粒径分布は、Fraunhofer光散乱近似を用いて、Malvern Mastersizer 2000 Laser Diffraction System(Malvern Instruments Plc.,Great Britain)を用いて測定した。当業者に知られている方法および器具は、充填剤および他の粒状材料の粒径を決定するために一般的に使用される。
ハンドシートの充填剤含有量は、570℃に加熱したマッフル炉内で乾燥したハンドシートの4分の1を燃焼させることによって決定した。燃焼が完了した後、残渣をデシケーター中に移し、冷却させた。室温に達したときに、残渣の重量を測定し、この質量を乾燥した4分の1のハンドシートの最初に測定した重量に関連させた。
液体コーティング組成物のブルックフィールド粘度を、製造の1時間後および25℃±1℃で100rpmで1分間攪拌した後に、適切なディスクスピンドル(例えばスピンドル2から5)を備えたBrookfield粘度計型RVTを使用して測定した。例えば、200から800mPa・sの間の粘度範囲ではスピンドル数3が使用され、400から1600mPa・sの間の粘度範囲ではスピンドル数4が使用され、800から3200mPa・sの間の粘度範囲ではスピンドル数5が使用された。
機械的強度特性は、ハンドシートの乾燥後に特徴付けられた。弾性率は、ISO1924−2:2008に従って決定し、曲げ剛性はISO5629:1983に従って決定した。
粒径分布データをxy散布図に表示し、これに応じてデータをx列およびy列に配置する一方で、サイズデータをx列に入れ、頻度データをy列に配置した。最大高さ(ym)は、粒径分布曲線を頻度データポイントで選別することによって決定した。次いで対応のx値は、最大高さにおけるピーク位置(xm)として定義された。最大ピーク高さを2で割ることにより、最大高半値が得られた(ym0.5)。
充填剤材料(PCC):Omya AG,Switzerlandから市販されている、分散されていない、偏三角面体沈降炭酸カルシウム(d50=4.3μm、Malvern Mastersizer 2000で測定)。
<[例1]凝集した充填剤粒子の調製(比較の例)>
FA1の溶液は、FA1を23℃の温度の水道水に攪拌しながら添加することによって調製した。FA1が完全に溶解するまで攪拌を60分間続けた。FA1は、FA1溶液の総重量に基づいて4重量%のFA1含有量を有する溶液が得られるような量で添加された。
FA1の溶液は、FA1を23℃の温度の水道水に攪拌しながら添加することによって調製した。FA1が完全に溶解するまで攪拌を60分間続けた。FA1は、FA1溶液の総重量に基づいて4重量%のFA1含有量を有する溶液が得られるような量で添加された。
60g(乾燥)パルプを10dm3の水道水で希釈し、最終紙重量に基づいて全体的な充填剤含有量を得るような量で試験すべき充填剤を添加した。懸濁液を30分間攪拌した。続いて、リテンションエイドとして0.06%(乾燥重量基準)のポリアクリルアミド(Polymin 1530、BASF,Germanyから市販されている。)を添加し、Rapid−Kothenハンドシート作製機を用いて80g/m2のシートを形成した。Rapid−Kothen乾燥機を用いて各シートを乾燥させた。ハンドシートの組成を下記表3に示す。
Claims (15)
- 凝集した充填剤粒子の調製方法であって、
a)それぞれが少なくとも1種の充填剤材料を含む少なくとも2種の水性懸濁液を提供する工程であって、
i)第1の水性懸濁液S1は少なくとも1種の凝集添加剤Aを含み、および
ii)第2の水性懸濁液S2は凝集添加剤Aとは異なる少なくとも1種の凝集添加剤Bを含み、および
iii)前記第1の水性懸濁液S1および前記第2の水性懸濁液S2中の前記少なくとも1種の充填剤材料は本質的に同じであることを特徴とする、工程、ならびに
b)工程a)で提供された前記少なくとも2種の水性懸濁液を同時に一緒にすることによって組み合わせて、凝集した充填剤粒子の水性懸濁液SMを形成する工程であって、前記第1の水性懸濁液および前記第2の水性懸濁液中の前記少なくとも1種の充填剤材料の質量比S1:S2は、1:100から100:1である工程
を含む、方法。 - 第1の水性懸濁液S1および/または第2の水性懸濁液S2および/または水性懸濁液SMのブルックフィールド粘度が、25℃で5000mPa・s未満、好ましくは25℃で1000mPa・s未満、より好ましくは25℃で10から200mPa・sの間であることを特徴とする、請求項1に記載の方法。
- 少なくとも1種の凝集添加剤Aが、カチオン性デンプン、ポリアミン、ポリエチレンイミン、ポリアクリルアミド、カチオン性アミンアミド、エピクロロヒドリン樹脂、ポリジアリルジメチルアンモニウムクロリド、カチオン性グアーおよび/またはこれらの混合物からなる群から選択されるカチオン性ポリマーであり、好ましくは少なくとも1種の凝集添加剤Aはカチオン性デンプンであることを特徴とする、請求項1または2に記載の方法。
- 少なくとも1種の凝集添加剤Bが、カルボキシメチルセルロース、アニオン性デンプン、アニオン性グアー、アニオン性キサンタンガムおよび/またはこれらの混合物からなる群から選択されるアニオン性ポリマーであり、好ましくは少なくとも1種の凝集添加剤Bはアニオン性カルボキシメチルセルロースであることを特徴とする、請求項1から3のいずれか一項に記載の方法。
- 水性懸濁液SMが、方法工程b)の間および/または後に、好ましくは異なる剪断速度で少なくとも2つの工程で、より好ましくは第1の剪断速度は第2の剪断速度よりも低い異なる剪断速度で少なくとも2つの工程で剪断されることを特徴とする、請求項1から4のいずれか一項に記載の方法。
- 少なくとも1種の充填剤材料が、炭酸カルシウム含有材料、例えば重質炭酸カルシウム、沈降炭酸カルシウム、改質炭酸カルシウム、タルク、粘土、ドロマイト、大理石、二酸化チタン、カオリン、シリカ、アルミナ、雲母、アルミニウム三水和物、水酸化マグネシウム、プラスチック顔料、有機充填剤および無機化学組成物を含むハイブリッド材料およびこれらの混合物からなる群から選択され、好ましくは少なくとも1種の充填剤材料は沈降炭酸カルシウムであることを特徴とする、請求項1から5のいずれか一項に記載の方法。
- 第1の水性懸濁液S1中の少なくとも1種の凝集添加剤Aの含有量は、第1の水性懸濁液S1の総重量を基準にして、0.001から20重量%、より好ましくは0.5から10重量%、最も好ましくは3から5重量%であり、および/または
第2の水性懸濁液S2中の少なくとも1種の凝集添加剤Bの含有量は、第2の水性懸濁液S2の総重量を基準にして、0.001から20重量%、より好ましくは0.1から10重量%、最も好ましくは0.2重量%から0.8重量%であることを特徴とする、請求項1から6のいずれか一項に記載の方法。 - 第1の水性懸濁液S1中の少なくとも1種の充填剤材料の含有量は、第1の水性懸濁液S1の総重量を基準にして、1から85重量%、好ましくは15から65重量%であり、および
第2の水性懸濁液S2中の少なくとも1種の充填剤材料の含有量は、第2の水性懸濁液S2の総重量を基準にして、1から85重量%、好ましくは15から65重量%であることを特徴とする、請求項1から7のいずれか一項に記載の方法。 - 方法工程b)の後に得られる水性懸濁液SMの固形分含有量は、水性懸濁液SMの総重量を基準にして、1から75重量%、好ましくは2から60重量%、最も好ましくは5から35重量%であることを特徴とする、請求項1から8のいずれか一項に記載の方法。
- 請求項1から9のいずれか一項に記載の方法の工程a)およびb)を含むフリースの調製方法であって、方法工程b)の後に得られた凝集した充填剤粒子の水性懸濁液SMを、合成および/または天然の繊維とさらなる工程c)で組み合わせ、および得られた懸濁液SMFを脱水工程d)に供してフリースを得る方法。
- 脱水工程d)が、スクリーン上で、好ましくは抄紙機のヘッドボックスを介して行われることを特徴とする請求項10に記載の方法。
- 請求項1から9のいずれか一項に記載の方法によって得られた凝集した充填剤粒子懸濁液であって、充填剤粒子が、単峰性粒径分布および/または40μm未満の半値全幅(FWHM)として表される体積で定義された粒径多分散性および/または5から50μmの範囲内の体積決定メジアン粒径(d50)を有することを特徴とする、懸濁液。
- 凝集した充填剤粒子懸濁液であって、充填剤粒子が、単峰性粒径分布および/または40μm未満の半値全幅(FWHM)として表される体積で定義された粒径多分散性および/または5から50μmの範囲内の体積決定メジアン粒径(d50)を有することを特徴とする、懸濁液。
- 請求項10または11に記載の方法によって得られたフリース、好ましくは紙シート。
- 紙コーティングおよび/または紙ウエットエンド用途、好ましくは高充填紙ウエットエンド用途、またはシガレット紙での、請求項12または13に記載の凝集した充填剤粒子懸濁液の使用。
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JP2015533392A (ja) * | 2012-11-01 | 2015-11-24 | ナルコ カンパニー | 製紙において使用される充填剤の前凝集 |
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TW201630814A (zh) | 2016-09-01 |
RU2690815C2 (ru) | 2019-06-05 |
ES2723284T3 (es) | 2019-08-23 |
KR101951579B1 (ko) | 2019-02-22 |
SI3018175T1 (sl) | 2019-05-31 |
CN107075273B (zh) | 2019-11-12 |
EP3018175B1 (en) | 2019-02-06 |
US20170275825A1 (en) | 2017-09-28 |
AU2015341878B2 (en) | 2018-03-01 |
CA2964677A1 (en) | 2016-05-12 |
TWI617512B (zh) | 2018-03-11 |
AU2015341878A1 (en) | 2017-06-29 |
WO2016071349A1 (en) | 2016-05-12 |
EP3018175A1 (en) | 2016-05-11 |
EP3215575A1 (en) | 2017-09-13 |
CA2964677C (en) | 2019-10-29 |
RU2017119644A (ru) | 2018-12-07 |
BR112017009368A2 (pt) | 2017-12-19 |
KR20170081247A (ko) | 2017-07-11 |
BR112017009368B1 (pt) | 2022-11-22 |
JP6533587B2 (ja) | 2019-06-19 |
CN107075273A (zh) | 2017-08-18 |
MX2017005703A (es) | 2017-06-29 |
HRP20190673T1 (hr) | 2019-08-09 |
US11326307B2 (en) | 2022-05-10 |
RU2017119644A3 (ja) | 2018-12-07 |
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