JP6118824B2 - 処理された無機粒子を含む、改善された光学性能を有するデコール紙から製造された紙積層体 - Google Patents
処理された無機粒子を含む、改善された光学性能を有するデコール紙から製造された紙積層体 Download PDFInfo
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- JP6118824B2 JP6118824B2 JP2014553319A JP2014553319A JP6118824B2 JP 6118824 B2 JP6118824 B2 JP 6118824B2 JP 2014553319 A JP2014553319 A JP 2014553319A JP 2014553319 A JP2014553319 A JP 2014553319A JP 6118824 B2 JP6118824 B2 JP 6118824B2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2419/00—Buildings or parts thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2479/00—Furniture
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
- Y10T428/256—Heavy metal or aluminum or compound thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31942—Of aldehyde or ketone condensation product
- Y10T428/31949—Next to cellulosic
- Y10T428/31964—Paper
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- Chemical & Material Sciences (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- Paper (AREA)
- Laminated Bodies (AREA)
Description
(a)表面積が少なくとも約30m2/gの処理されたTiO2顔料と、カチオン性ポリマーとを含むTiO2顔料スラリーであって、処理物が、ケイ素、アルミニウム、リンの酸化物、またはこれらの混合物を含み、かつ処理された二酸化チタン顔料の全重量に対して少なくとも15%の量で含まれるスラリー、
(b)紙パルプ、および
(c)カチオン性ポリマーであって、スラリー中のカチオン性ポリマーと分散体中のカチオン性ポリマーに相溶性があり、同じ光学性能を得るのに、分散体中の処理されたTiO2顔料の量が、(a)の処理されたTiO2顔料を含まない分散体と比べて、約10%低減されるカチオン性ポリマー
を含む分散体を提供する。
(a)表面積が少なくとも約30m2/gの処理されたTiO2顔料と、カチオン性ポリマーとを含むTiO2顔料スラリーであって、処理物が、ケイ素、アルミニウム、リンの酸化物、またはこれらの混合物を含み、かつ処理された二酸化チタン顔料の全重量に対して少なくとも15%の量で含まれるスラリー、
(b)紙パルプ、および
(c)カチオン性ポリマーであって、スラリー中のカチオン性ポリマーと分散体中のカチオン性ポリマーに相溶性があり、同じ光学性能を得るのに、分散体中の処理されたTiO2顔料の量が、(a)の処理されたTiO2顔料を含まない分散体と比べて、約10%低減されるカチオン性ポリマー
を含む紙積層体に関する。
二酸化チタン粒子、特に二酸化チタン顔料粒子は、本開示のように処理することが考えられる。ケイ素酸化物、アルミニウム酸化物、またはそれらの混合物であり得る処理物の全量は、処理された二酸化チタン粒子の全重量に対して、少なくとも約15%である。シリカ処理物の濃度は、一般的には少なくとも約6%であり、より一般的には約6〜約14%、より一層一般的には約9.5〜約12%である。アルミナ処理物の濃度は、処理された二酸化チタン粒子の全重量に対して、約4〜約8%、より一般的には約5.5〜約6%である。二酸化チタン粒子とは、紙積層構造体などの最終製品全体に分散して、色彩と不透明度を付与する粒状材料を意味する。より一般的には、二酸化チタン(TiO2)粒子は顔料性のものである。
一実施形態では、不透明度が改善された、処理された二酸化チタン(TiO2)粒子の製造方法は、多孔質シリカで処理された二酸化チタン粒子と水を含むスラリーを、少なくとも約90℃、より一般的には約93〜約97℃、より一層一般的には約95〜約97℃の温度に加熱することを含む。シリカの付着は、焼成シリカの焼成二酸化チタン粒子上への沈着、四塩化ケイ素と四塩化チタンの共酸化、または濃縮相含水酸化物からの沈着により行うことができる。
処理された二酸化チタン粒子は、紙積層体に使用し得る。本開示の紙積層体は、フローリング、家具、カウンタートップ、人工木材表面および人工石材表面として有用である。
デコール紙は、上記のように製造した二酸化チタンなどのフィラー、そしてまた追加のフィラーを含み得る。他のフィラーのいくつかの例を挙げれば、タルク、酸化亜鉛、カオリン、炭酸カルシウムおよびこれらの混合物がある。
本開示の紙積層体は、先に組み込んだ参考文献の多くに記載されているように、当業者によく知られている任意の慣用的な方法で作ることができる。
カチオン化二酸化チタンスラリーの調製方法
500mLのステンレス鋼製ビーカーに、156.6gの脱イオン水、5.9gの38%ポリ塩化アルミニウム溶液、および4.28gの商業的に入手可能な湿潤紙力増強樹脂(WSR)であるKymene617を投入することにより、35重量%の水性スラリーを調製した。この溶液のpHは3.28と測定された。撹拌しながら、45gのTiO2顔料(顔料全添加量の半分)を加え、顔料スラリーを調製した。10%HClで、pHを3.5に調節した。残りの45gのTiO2顔料を、撹拌しながら加えた。10%NaOH溶液を添加することにより、pHを5.0と上方に調節した。これに含まれる顔料の等電点(IEP)は、8.4と測定された。
1455gの脱イオン水に45gの乾燥ユーカリパルプを加えることにより、紙パルプスラリーの紙料混合物を調製した(すなわち、固形分3%)。混合物をパルプ解砕機でさらに均質化し、得られたスラリーを、均質化槽中で、7.2Lの脱イオン水を加えて固形分0.625%へと希釈した。パルプスラリーのpHは5.7と測定された。
22〜41%の範囲のラダー状TiO2含有率に対応する、100〜115g/m2の坪量を有するよう、手抄きシートを定式化した。手抄きシートの実際のTiO2含有率は、紙の灰分から求めた。典型的な作製法では、低剪断の撹拌を行いながら、339gのパルプ懸濁液を5.7gのカチオン化TiO2分散体(上記のもの)と混合することにより、40%TiO2を含有する手抄きシートを作製した。顔料の凝集を引き起こすよう、10%NaOHにより、この混合物のpHを7.4と上方に調節した。TiO2含有率の低い紙において、比較的高い繊維含有率を補償するために、Kymene WSRの追加アリコットを完成紙料に加えた(すなわち、等価坪量)。この方法で、乾燥繊維重量に対して、WSRの全量を、0.75%の乾燥ポリマー固体重量に一定に維持した。手抄きシートを市販の研究室規模の装置により作製した。
湿潤引張強度の測定
ISO 1924−2に従い、手抄きシート(TiO2含有率40%)から切り取った細片を、TT−2703水平引張試験機にセットし、湿らせて、破断時に加えられた力を各細片について測定した。表1に5枚の細片の平均引張強度を示す。同一の顔料添加率では、カチオン化TiO2顔料分散体から作製されたデコール紙の湿潤引張強度は、比較の顔料分散体から作製した紙より劣ることはなかった。
改善された外観を有するデコール紙積層体パネルの作製。
工程1:研究室規模の含浸機を使用し、上記のデコール紙シートに熱硬化性メラミン−ホルムアルデヒド樹脂の50%水溶液を含浸させた。紙シートを乾燥させ、特性を調べたところ、揮発分含有率は6.5重量%であった。揮発分含有率は、樹脂含浸シートを160℃に5分間加熱して測定した。
工程2:熱硬化性フェノール樹脂が既に含浸されている5枚のクラフト紙とともに、工程1からの樹脂飽和シートを積層体の最上面に載置して積層させることにより、高圧積層体シート板を実験室で作製した。組立体を加熱プレス機にセットし、温度150℃、圧力10MPaの条件下に40分間置いた。
得られた積層体パネルの外観を、商業的に入手可能なDAA装置を使用して測定した。測定単位のDuPont Appearance値(DAV2)は、表面剥離の大きさ(粗さ)を定量化したもので、したがって、より小さい値は、より滑らかな表面に対応する。表の結果は、カチオン化TiO2分散体を含有するデコール紙から作製された積層体パネルには、高充填水準(すなわち、>36g/m2のTiO2)で、外観が改善される傾向があることを示している。しかしながら、低充填水準では、積層化した対照と比べて外観は低下した。
二酸化チタンスラリーの調製方法
500mLのステンレス鋼製ビーカーに148gの脱イオン水を投入することにより、36.5重量%の水性スラリーを調製し、10%NaOHを加えてpHを9.2〜9.4に調節した。Cowlesブレードにより1000rpmで混合しながら、85gのTiO2を加えた。その後、Dispermat混合機を使用し、5000rpmで5分間、スラリーを分散させた。pHの測定中は撹拌を止めた。再度、静かに撹拌しながら10%NaOHを添加してpHを9.2〜9.4に調節し、少なくとも1分間pHを維持した。さらに10分間、5000rpmで撹拌を続けた。含まれる顔料の等電点は6.5と測定された。
Claims (18)
- 機械的強度を低下させることなく光学性能が改善された分散体から製造されたデコール紙を含む紙積層体であって、前記分散体が
(a)表面積が少なくとも30m 2 /gの処理されたTiO2粒子と、カチオン性ポリマーとを含むTiO2粒子スラリーであって、前記処理物は、ケイ素酸化物、アルミニウム酸化物、リン酸化物、またはこれらの混合物を含み、且つ前記処理物が前記処理されたTiO 2 粒子の全重量に対して少なくとも15%の量で含まれるスラリー、
(b)紙パルプ、および
(c)カチオン性ポリマーであって、前記スラリー中のカチオン性ポリマーと前記分散体中のカチオン性ポリマーに相溶性があり、同じ光学性能を得るのに、前記分散体中の処理されたTiO2粒子の量が、(a)の処理されたTiO2粒子を含まない分散体と比べて、10%低減されるカチオン性ポリマー
を含む紙積層体。 - 前記TiO2粒子が顔料である請求項1に記載の紙積層体。
- 前記スラリー中の前記カチオン性ポリマーが、尿素−ホルムアルデヒド樹脂、メラミン−ホルムアルデヒド樹脂、カチオン性ポリアクリルアミドポリマー、ポリジアルキルアンモニウムポリマー、ポリアクリルアミド−ポリジアルキルアンモニウムコポリマー、またはポリアミド−ポリアミン−エピクロルヒドリン樹脂である請求項1に記載の紙積層体。
- 前記分散体中の前記カチオン性ポリマー(c)が、尿素−ホルムアルデヒド樹脂、メラミン−ホルムアルデヒド樹脂、またはポリアミド−ポリアミン−エピクロルヒドリン樹脂である請求項1に記載の紙積層体。
- 前記ケイ素酸化物の処理物濃度が、前記処理されたTiO2 粒子の全重量に対して、少なくとも6%である請求項1に記載の紙積層体。
- 前記アルミニウム酸化物の処理物濃度が、前記処理されたTiO2 粒子の全重量に対して、4〜8%である請求項1に記載の紙積層体。
- 前記TiO2粒子が、0.02〜0.95ミクロンの粒径を有する請求項1に記載の紙積層体。
- 前記TiO2粒子が、0.5〜0.75ミクロンの粒径を有する請求項1に記載の紙積層体。
- 前記TiO2粒子が、焼成TiO2粒子である請求項1に記載の紙積層体。
- 前記ケイ素酸化物が、焼成シリカの焼成TiO2粒子上への沈着、四塩化ケイ素と四塩化チタンの共酸化、または濃縮相含水酸化物からの沈着により付着されている請求項9に記載の紙積層体。
- 前記ケイ素酸化物が、濃縮相含水酸化物からの沈着により付着されている請求項1に記載の紙積層体。
- 前記ケイ素酸化物が、濃縮相含水酸化物からの沈着により付着されている請求項10に記載の紙積層体。
- 前記ケイ素酸化物、アルミニウム酸化物、またはそのいずれもが、前記TiO2粒子の表面において均質である請求項10に記載の紙積層体。
- 不透明な、セルロース系パルプをベースとするシートをさらに含む請求項1に記載の紙積層体。
- 前記不透明な、セルロース系パルプをベースとするシートがクラフト紙である請求項14に記載の紙積層体。
- 含浸樹脂をさらに含む請求項1に記載の紙積層体。
- 前記含浸樹脂が、フェノール樹脂またはメラミン樹脂である請求項16に記載の紙積層体。
- 前記カチオン性ポリマーが、前記紙に使用された前記パルプの全乾燥重量に対して、0.5〜1.5重量%の量で含まれる請求項1に記載の紙積層体。
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PCT/US2013/020727 WO2013109436A1 (en) | 2012-01-16 | 2013-01-09 | Paper laminates made from décor paper having improved optical performance comprising treated inorganic particles |
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DE102006004344B4 (de) * | 2006-01-30 | 2008-11-13 | Kronos International, Inc. | Titandioxid-Pigment mit hoher Opazität und Verfahren zur Herstellung |
US7264672B1 (en) * | 2006-10-31 | 2007-09-04 | National Titanium Dioxide Co. Ltd. (Cristal) | Titanium dioxide pigment composite and method of making same |
US9023179B2 (en) | 2012-01-16 | 2015-05-05 | E I Du Pont De Nemours And Company | Dispersions made from treated inorganic particles for making decor paper having improved optical performance |
US9920486B2 (en) | 2013-01-09 | 2018-03-20 | The Chemours Company Fc, Llc | Décor paper having improved optical performance comprising treated inorganic particles |
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CA2861207A1 (en) | 2013-07-25 |
AU2013373000B2 (en) | 2017-05-04 |
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AU2013210055B2 (en) | 2017-06-01 |
AU2013210055A1 (en) | 2014-07-24 |
EP2804981B1 (en) | 2016-03-16 |
ES2571453T3 (es) | 2016-05-25 |
CN104066890A (zh) | 2014-09-24 |
EP2804981A1 (en) | 2014-11-26 |
US9975318B2 (en) | 2018-05-22 |
CA2861207C (en) | 2019-04-02 |
JP2015509150A (ja) | 2015-03-26 |
CN104066890B (zh) | 2017-03-29 |
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