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公开(公告)号：US06264907B1
公开(公告)日：2001-07-24
申请号：US09266575
申请日：1999-03-11
IPC分类号： C01B3312
CPC分类号： C01B33/187 , C01B33/18 , C01P2004/52 , C01P2004/61 , C01P2006/10 , C01P2006/12 , C01P2006/14 , C01P2006/16 , C01P2006/19 , C01P2006/60 , D21H17/68 , D21H21/52
摘要： The present invention relates to a process for easily and efficiently producing silica particles having a narrow particle size distribution and a high porosity from inexpensive starting materials such as sodium silicate. The silica particles of the present invention can be obtained in the form of a slurry containing them by (1) forming a slurry by mixing first particles difficultly soluble in an alkali and soluble in an acid, with an aqueous alkali silicate solution to form a first slurry containing the first particles, (2) neutralizing the first slurry with a mineral acid to prepare a second slurry containing second particles wherein silica is deposited on the first particles, and (3) adding a mineral acid to the second slurry to dissolve the first particles from the second particles, to prepare a third slurry containing silica particles. When the silica particles of the present invention are used as a filler even in a small amount for paper making, the resultant papers have excellent brightness, opacity, opacity-after-printing, etc.
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2.发明授权公开(公告)号：US06685907B2
公开(公告)日：2004-02-03
申请号：US09832948
申请日：2001-04-12
IPC分类号： C01B3312
CPC分类号： C01B33/187 , C01B33/18 , C01P2004/52 , C01P2004/61 , C01P2006/10 , C01P2006/12 , C01P2006/14 , C01P2006/16 , C01P2006/19 , C01P2006/60 , D21H17/68 , D21H21/52
摘要： The present invention relates to a process for easily and efficiently producing silica particles having a narrow particle size distribution and a high porosity from inexpensive starting materials such as sodium silicate. The silica particles of the present invention can be obtained in the form of a slurry containing them by (1) forming a slurry by mixing first particles difficultly soluble in an alkali and soluble in an acid, with an aqueous alkali silicate solution to form a first slurry containing the first particles, (2) neutralizing the first slurry with a mineral acid to prepare a second slurry containing second particles wherein silica is deposited on the first particles, and (3) adding a mineral acid to the second slurry to dissolve the first particles from the second particles, to prepare a third slurry containing silica particles. When the silica particles of the present invention are used as a filler even in a small amount for paper making, the resultant papers have excellent brightness, opacity, opacity-after-printing, etc.
摘要翻译： 本发明涉及从廉价的原料如硅酸钠容易且有效地生产具有窄的粒度分布和高孔隙率的二氧化硅颗粒的方法。 本发明的二氧化硅颗粒可以通过（1）通过将难溶于碱溶解于酸中的可溶于酸的第一种颗粒与碱性硅酸钠溶液混合形成浆料形成浆料形式而获得， 含有第一颗粒的浆料，（2）用无机酸中和第一浆料，以制备含有二氧化硅沉积在第一颗粒上的第二颗粒的第二浆料，和（3）向第二浆料中加入无机酸以溶解第一颗粒 制备含有二氧化硅颗粒的第三浆料。当本发明的二氧化硅颗粒作为填料即使少量用作造纸时，所得的纸具有优异的亮度，不透明度，不透明度， 打印等
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3.发明授权公开(公告)号：US06413373B1
公开(公告)日：2002-07-02
申请号：US09832849
申请日：2001-04-12
IPC分类号： D21H1768
CPC分类号： C01B33/187 , C01B33/18 , C01P2004/52 , C01P2004/61 , C01P2006/10 , C01P2006/12 , C01P2006/14 , C01P2006/16 , C01P2006/19 , C01P2006/60 , D21H17/68 , D21H21/52
摘要： The present invention relates to a process for easily and efficiently producing silica particles having a narrow particle size distribution and a high porosity from inexpensive starting materials such as sodium silicate. The silica particles of the present invention can be obtained in the form of a slurry containing them by (1) forming a slurry by mixing first particles difficultly soluble in an alkali and soluble in an acid, with an aqueous alkali silicate solution to form a first slurry containing the first particles, (2) neutralizing the first slurry with a mineral acid to prepare a second slurry containing second particles wherein silica is deposited on the first particles, and (3) adding a mineral acid to the second slurry to dissolve the first particles from the second particles, to prepare a third slurry containing silica particles. When the silica particles of the present invention are used as a filler even in a small amount for paper making, the resultant papers have excellent brightness, opacity, opacity-after-printing, etc.
摘要翻译： 本发明涉及从廉价的原料如硅酸钠容易且有效地生产具有窄的粒度分布和高孔隙率的二氧化硅颗粒的方法。 本发明的二氧化硅颗粒可以通过（1）通过将难溶于碱溶解于酸中的可溶于酸的第一种颗粒与碱性硅酸钠溶液混合形成浆料形成浆料形式而获得， 含有第一颗粒的浆料，（2）用无机酸中和第一浆料，以制备含有二氧化硅沉积在第一颗粒上的第二颗粒的第二浆料，和（3）向第二浆料中加入无机酸以溶解第一颗粒 从第二颗粒的颗粒，制备含有二氧化硅颗粒的第三浆料。 当本发明的二氧化硅颗粒作为填料即使少量用于造纸时，所得的纸具有优异的亮度，不透明度，印刷后不透明度等。
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公开(公告)号：US07255918B2
公开(公告)日：2007-08-14
申请号：US10454610
申请日：2003-06-05
申请人： Harumi Watanabe , Atsushi Myojo , Hiroyuki Wakasa , Osamu Kitao
发明人： Harumi Watanabe , Atsushi Myojo , Hiroyuki Wakasa , Osamu Kitao
CPC分类号： D21H19/828 , D21H17/37 , D21H19/36 , D21H19/40 , D21H19/82 , D21H21/16 , Y10T428/27 , Y10T428/273 , Y10T428/277 , Y10T428/31721 , Y10T428/31895 , Y10T428/31899 , Y10T428/31906 , Y10T428/31993
摘要： A coated paper sheet provided with a coating layer formed on a paper sheet substrate and containing a pigment and a binder and optionally a pre-coated polyacrylamide-containing anionic acrylic resin layer formed between the substrate and coating layer, and having a 75° specular gloss of 70% or more, an air permeability of 4000 seconds or less, a Clark stiffness, in terms of critical strength L, of 12 cm or more in a cross direction and an internal bond strength of 200 mJ or more, exhibits high resistance to blistering, excellent printer-passing property, and high quality image-recording property and useful for both of offset printing and electrophotographic duplicating or printing.
摘要翻译： 一种涂布纸，其具有形成在纸张基材上并且含有颜料和粘合剂以及任选地在基材和涂层之间形成的预涂布的含聚丙烯酰胺的阴离子丙烯酸树脂层的涂层，并且具有75°镜面光泽度 70％以上，透气度为4000秒以下，临界强度L的克拉克刚度在横向为12cm以上，内部粘合强度为200mJ以上，表现出高的耐 起泡性，良好的打印机传递性能和高质量的图像记录性能，并且对于胶版印刷和电子照相复制或印刷都是有用的。
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公开(公告)号：US5418057A
公开(公告)日：1995-05-23
申请号：US215340
申请日：1994-03-21
CPC分类号： B41M5/5254 , B41M2205/32 , Y10S428/913 , Y10S428/914 , Y10T428/24901 , Y10T428/277 , Y10T428/31993
摘要： A thermal transfer receiving paper has an image-recieving layer receiving a thermal melting ink on a base paper containing pulp fibers as the main component. The image-receiving layer is formed by coating or impregnating a coating composition containing a synthetic polymer resin on one surface of the base paper. The synthetic polymer resin has a glass transition point of -60.degree. to -5.degree. C. and a surface tension of 38 to 55 dyne/cm. The pulp fibers constituting the base paper preferably containes at least one unbeaten pulp fiber in an amount of 50 to 100 weight % based on the total pulp fibers, which has a degree of water retention of not higher than 125% in accordance with J. TAPPI No.26, and satisfies the following equesions 1 and 2:0.3.ltoreq.L.ltoreq.1.0 10.3.ltoreq.d/D.ltoreq.0.8 2whereL: Length weighted mean fiber length (mm) measured in accordance with J.TAPPI No. 52D: Mean fiber diameter (.mu.m) measured by microphotographyd: Mean lumen diameter (.mu.m) measured by microphotography.Further it is preferred that the coating composition further contains a porous pigment having an apparent specific gravity of 0.1 to 0.5 g/cm.sup.3 according to JIS K-6220.
摘要翻译： 热转印接收纸具有在含有纸浆纤维作为主要成分的原纸上接收热熔油墨的图像接收层。 图像接收层通过在原纸的一个表面上涂布或浸渍含有合成聚合物树脂的涂料组合物而形成。 合成聚合物树脂的玻璃化转变温度为-60〜-5℃，表面张力为38〜55达因/厘米。 构成原纸的纸浆纤维优选含有至少一种不败纸浆纤维，其量为总纸浆纤维的50-100重量％，根据J.TAPPI，其水保持度不高于125％ No.26，满足以下等式+ E，crc / 1 /和+ E，crc / 2 /：0.3
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公开(公告)号：US5316621A
公开(公告)日：1994-05-31
申请号：US862539
申请日：1992-06-18
CPC分类号： D21C5/02 , D21B1/32 , D21D5/00 , Y02W30/646 , Y02W30/648
摘要： A method of obtaining an excellent recycled pulp from waste pressure-sensitive adhesive paper which has previously been discarded. This method being characterized in that the waste paper is defiberized, then a defiberized suspension thereof is diluted, the diluted suspension is coarse screened by a screen having a slit width of below 0.5 mm, the pulp suspension after coarse screening is dewatered so as to have a solid matter consistency of 15 to 40% by weight, the dewatered stuff is mechanically agitated, the difference between the temperature of the stuff before the agitation and the temperature thereof after the agitation being below 12.degree. C., the obtained stuff is being diluted again, the diluted suspension is fine screened by a screen having a slit width of below 0.2 mm, the obtained accept is mixed with a surface active agent and subjected to flotation separation, the accept is cleaned by a cleaner for heavy foreign matters and/or a cleaner for light foreign matters, and then the accept being washed.
摘要翻译： PCT No.PCT / JP91 / 01366 Sec。 371日期：1992年6月18日 102（e）日期1992年6月18日PCT 1991年10月7日PCT PCT。 公开号WO92 / 07137 日期：1992年4月30日。一种从先前被废弃的废压敏粘合纸获得优异的再循环纸浆的方法。 该方法的特征在于废纸分解，然后稀释其脱气悬浮液，将稀释的悬浮液通过狭缝宽度小于0.5mm的筛网粗筛，粗筛后的纸浆悬浮液脱水，以具有 固体物质浓度为15〜40重量％，将脱水物质机械搅拌，搅拌前的物料的温度与搅拌后的温度之差在12℃以下，所得物质被稀释 将稀释的悬浮液再次用狭缝宽度小于0.2mm的筛网进行精细筛选，将所得的接受物与表面活性剂混合并进行浮选分离，用较重的杂质的清洁剂和/或 一个清洁剂用于轻微的异物，然后接受洗涤。
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