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公开(公告)号：EP0720046B1
公开(公告)日：2001-10-17
申请号：EP95203558.2
申请日：1995-12-19
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3.发明公开Process for buffering concentrated aqueous slurries 失效Verfahren zur Pufferung von konzentriertenwässerigenAufschlämmungen
公开(公告)号：EP0720046A2
公开(公告)日：1996-07-03
申请号：EP95203558.2
申请日：1995-12-19
发明人： Texter, John, c/o Eastman Kodak Co., Patent Dep. , Sharma, Ravi, c/o Eastman Kodak Co., Patent Dep. , Czekai, David Alan
摘要： A process for buffering concentrated aqueous slurries comprising the steps of:
providing a particulate solid substance comprising a weak acid functional group, having effective pK a1 > 1 and less than 1% by weight aqueous solubility at pH = pK a1 ;
providing an aqueous solution consisting essentially of water or a mixture of water with water-miscible solvent, at pH less than the greater of 7 and pK a1 + 2;
providing a buffering salt of a weak acid, where the weak acid associated with this buffering salt has pK a2 and where pK a1 - 2 ≦ pK a1' ; and combining said aqueous solution, said particulate solid substance, and said buffering salt to form a slurry;
wherein said process is essentially devoid of any step comprising the addition of any weak acid, other than that arising from reaction between said buffering salt and said particulate solid substance, having greater than 2% by weight aqueous solubility at pH = pK a1 is disclosed.
An aqueous-based slurry comprising:
a particulate solid substance comprising a weak acid functional group having effective pK a1 > 1 and less than 1% by weight aqueous solubility at pH = pK a1 ;
an aqueous continuous phase at pH a1 + 3;
a buffering salt of a weak acid, where the weak acid associated with this buffering salt has pK a1' and where pK a1 - 2 ≦ pK a1' ; and where the incremental molar ionic strength in the continuous phase of said slurry resulting from said buffering salt is less than 0.04 mol/L is disclosed.
A process for dispersing a particulate solid substance in a continuos aqueous phase comprising the steps of:
providing a comminution reactor;
providing a particulate solid substance comprising a weak acid functional group, having effective pK a1 > 1 and less than 1% by weight aqueous solubility at pH = pK a1 ;
providing an aqueous solution consisting essentially of water or a mixture of water with water-miscible solvent, at pH less than the greater of 7 and pK a1 + 2;
providing a buffering salt of a weak acid, where the weak acid associated with this buffering salt has pK a1' and where pK a1 - 2 ≦ pK a1' ; providing milling media;
combining said particulate solid substance, said aqueous solution, said buffering salt, and said milling media in said comminution reactor to produce a multiphase mixture; and
milling said mixture to produce a reduced particle size slurry of said particulate solid substance is disclosed.摘要翻译： 一种用于缓冲浓缩水性浆液的方法，包括以下步骤：提供包含弱酸官能团的颗粒状固体物质，其在pH = pKa1时具有有效的pKa1> 1且小于1重量％的水溶解度; 提供基本上由水或水与水混溶性溶剂的混合物组成的水溶液，pH小于7和pKa1 + 2以上的pH; 提供弱酸的缓冲盐，其中与该缓冲盐相关的弱酸具有pKa2，并且其中将所述水溶液，所述颗粒固体物质和所述缓冲盐组合以形成浆料; 其中所述方法基本上没有任何步骤，除了在pH = pKa1之外具有大于2重量％的水溶解度的所述缓冲盐和所述颗粒状固体物质之间的反应以外的任何弱酸的添加。 一种水性浆料，其包含：包含在pH = pKa1下具有有效pKa1> 1且小于1重量％水溶解度的弱酸官能团的颗粒状固体物质; pH
1且小于1重量％的水溶解度; 提供基本上由水或水与水混溶性溶剂的混合物组成的水溶液，pH小于7和pKa1 + 2以上的pH; 提供弱酸缓冲盐，其中与该缓冲盐相关的弱酸具有pKa1'，并且其中 -
公开(公告)号：EP0776952A3
公开(公告)日：1998-02-18
申请号：EP96420331.9
申请日：1996-11-15
IPC分类号： C09D11/00
CPC分类号： C09D11/322
摘要： A process for making ink jet inks, comprising the steps of:
(A) providing an organic pigment dispersion containing a pigment, a carrier for the pigment and a dispersant; (B) mixing the pigment dispersion with rigid milling media having an average particle size less than 100 µm; (C) introducing the mixture of step (B) into a high speed mill; (D) milling the mixture from step (C) until a pigment particle size distribution is obtained wherein 90% by weight of the pigment particles have a size less than 100 nanometers (nm); (E) separating the milling media from the mixture milled in step (D); and (F) diluting the mixture from step (E) to obtain an ink jet ink having a pigment concentration suitable for ink jet printers.-
5.发明公开Ink jet inks containing nanoparticles or organic pigments 失效Tintenstrahltinten enthaltend Nanopartikeln oder organische Pigmente
公开(公告)号：EP0776952A2
公开(公告)日：1997-06-04
申请号：EP96420331.9
申请日：1996-11-15
IPC分类号： C09D11/00
CPC分类号： C09D11/322
摘要： A process for making ink jet inks, comprising the steps of:
(A) providing an organic pigment dispersion containing a pigment, a carrier for the pigment and a dispersant;
(B) mixing the pigment dispersion with rigid milling media having an average particle size less than 100 µm;
(C) introducing the mixture of step (B) into a high speed mill;
(D) milling the mixture from step (C) until a pigment particle size distribution is obtained wherein 90% by weight of the pigment particles have a size less than 100 nanometers (nm);
(E) separating the milling media from the mixture milled in step (D); and
(F) diluting the mixture from step (E) to obtain an ink jet ink having a pigment concentration suitable for ink jet printers.摘要翻译： 一种制备喷墨油墨的方法，包括以下步骤：（A）提供含有颜料的有机颜料分散体，颜料载体和分散剂; （B）将颜料分散体与平均粒度小于100μm的硬质研磨介质混合; （C）将步骤（B）的混合物引入高速磨机; （D）研磨来自步骤（C）的混合物，直至获得颜料粒度分布，其中90重量％的颜料颗粒具有小于100纳米（nm）的尺寸; （E）将研磨介质与步骤（D）中研磨的混合物分离; 和（F）从步骤（E）稀释混合物，得到具有适合于喷墨打印机的颜料浓度的喷墨油墨。
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公开(公告)号：EP0720046A3
公开(公告)日：1996-07-24
申请号：EP95203558.2
申请日：1995-12-19
发明人： Texter, John, c/o Eastman Kodak Co., Patent Dep. , Sharma, Ravi, c/o Eastman Kodak Co., Patent Dep. , Czekai, David Alan
摘要： A process for buffering concentrated aqueous slurries comprising the steps of:
providing a particulate solid substance comprising a weak acid functional group, having effective pK a1 > 1 and less than 1% by weight aqueous solubility at pH = pK a1 ;
providing an aqueous solution consisting essentially of water or a mixture of water with water-miscible solvent, at pH less than the greater of 7 and pK a1 + 2;
providing a buffering salt of a weak acid, where the weak acid associated with this buffering salt has pK a2 and where pK a1 - 2 ≦ pK a1' ; and combining said aqueous solution, said particulate solid substance, and said buffering salt to form a slurry;
wherein said process is essentially devoid of any step comprising the addition of any weak acid, other than that arising from reaction between said buffering salt and said particulate solid substance, having greater than 2% by weight aqueous solubility at pH = pK a1 is disclosed. An aqueous-based slurry comprising:
a particulate solid substance comprising a weak acid functional group having effective pK a1 > 1 and less than 1% by weight aqueous solubility at pH = pK a1 ;
an aqueous continuous phase at pH a1 + 3;
a buffering salt of a weak acid, where the weak acid associated with this buffering salt has pK a1' and where pK a1 - 2 ≦ pK a1' ; and where the incremental molar ionic strength in the continuous phase of said slurry resulting from said buffering salt is less than 0.04 mol/L is disclosed. A process for dispersing a particulate solid substance in a continuos aqueous phase comprising the steps of:
providing a comminution reactor; providing a particulate solid substance comprising a weak acid functional group, having effective pK a1 > 1 and less than 1% by weight aqueous solubility at pH = pK a1 ;
providing an aqueous solution consisting essentially of water or a mixture of water with water-miscible solvent, at pH less than the greater of 7 and pK a1 + 2;
providing a buffering salt of a weak acid, where the weak acid associated with this buffering salt has pK a1' and where pK a1 - 2 ≦ pK a1' ; providing milling media;
combining said particulate solid substance, said aqueous solution, said buffering salt, and said milling media in said comminution reactor to produce a multiphase mixture; and
milling said mixture to produce a reduced particle size slurry of said particulate solid substance is disclosed.摘要翻译： 一种用于缓冲处理浓缩的含水浆料，其包括以下步骤：提供包含弱酸官能团的微粒固体物质，具有在pH = pKa1的有效pKa1的> 1且小于1重量％的水溶解度; 提供基本上由水或水与水混溶溶剂的混合物组成的水溶液，其pH值低于7和pKa1 + 2中的较大值; 提供弱酸的缓冲盐，其中与该缓冲盐结合的弱酸具有pKa2并且其中pKa1-2≤pKa1'; 并将所述水溶液，所述颗粒固体物质和所述缓冲盐混合以形成浆液; 其中所述方法基本上没有包括添加任何弱酸的步骤，除了所述缓冲盐和所述微粒固体物质之间的反应产生的弱酸之外，在pH = pKa1时具有大于2重量％的水溶解度。 一种水基浆液，其包含：在pH = pKa1时包含具有有效pKa1> 1且小于1重量％水溶解度的弱酸官能团的颗粒状固体物质; pH
1且小于1重量％的水溶解度; 提供基本上由水或水与水混溶溶剂的混合物组成的水溶液，其pH值低于7和pKa1 + 2中的较大值; 提供弱酸的缓冲盐，其中与该缓冲盐相关的弱酸具有pKa1'且其中pKa1-2≤pKa1'; 提供研磨介质; 在所述粉碎反应器中混合所述颗粒状固体物质，所述水溶液，所述缓冲盐和所述研磨介质以产生多相混合物; 并研磨所述混合物以产生所述颗粒状固体物质的减小的颗粒尺寸浆料。
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