公开(公告)号：US5994041A

公开(公告)日：1999-11-30

申请号：US19970

申请日：1998-02-06

申请人： John Texter ,  Ravi Sharma ,  David Alan Czekai

发明人： John Texter ,  Ravi Sharma ,  David Alan Czekai

IPC分类号： G03C1/005 ,  G03C7/388 ,  G03C7/413

CPC分类号： G03C7/388 ,  G03C1/005 ,  Y10S977/776

摘要： An aqueous-based slurry comprising:a particulate solid substance comprising a weak acid functional group having effective pK.sub.a1 >1 and less than 1% by weight aqueous solubility at pH=pK.sub.a1 ;an aqueous continuous phase at pH

摘要翻译： 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

公开(公告)号：US5750321A

公开(公告)日：1998-05-12

申请号：US786069

申请日：1997-01-21

申请人： John Texter ,  Ravi Sharma ,  David Alan Czekai

发明人： John Texter ,  Ravi Sharma ,  David Alan Czekai

IPC分类号： A61K9/107 ,  B01F3/12 ,  B01J13/00 ,  C09B67/46 ,  G03C1/005 ,  G03C7/388 ,  G03C1/38

CPC分类号： G03C7/388 ,  G03C1/005

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.sub.a1 >1 and less than 1% by weight aqueous solubility at pH=pK.sub.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.sub.a1 +2; providing a buffering salt of a weak acid, where the weak acid associated with this buffering salt has pK.sub.a2 and where pK.sub.a1 -2.ltoreq.pK.sub.a2 ; 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.sub.a1 is disclosed. An aqueous-based slurry comprising: a particulate solid substance comprising a weak acid functional group having effective pK.sub.a1 >1 and less than 1% by weight aqueous solubility at pH=pK.sub.a1 ; an aqueous continuous phase at pH

摘要翻译： 一种用于缓冲浓缩水性浆料的方法，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，其中pKa1-2是pKa2; 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料; 其中所述方法基本上没有任何步骤，除了在pH = pKa1下具有大于2重量％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

公开(公告)号：US5723255A

公开(公告)日：1998-03-03

申请号：US487373

申请日：1995-06-07

申请人： John Texter ,  David Alan Czekai

发明人： John Texter ,  David Alan Czekai

IPC分类号： G03C8/40 ,  G03C8/00

CPC分类号： G03C8/402

摘要： An aqueous solid particle dispersion of a thermal solvent, where said thermal solvent is a water-immiscible phenol derivative and has a melting point, T.sub.m, between 30.degree. C. and about 200.degree. C., wherein said dispersion contains a dispersing aid, and wherein the thermal solvent particles in said dispersion are essentially nanocrystalline is disclosed. Also disclosed is a process for forming a coating comprising the steps of:providing an aqueous solid particle dispersion of thermal solvent, where said thermal solvent is a water-immiscible phenol derivative and has a melting point, T.sub.m, between 30.degree. C. and about 200.degree. C., and where said dispersion contains a dispersing aid; combining said aqueous solid particle thermal solvent dispersion with a coating melt composition, where said coating melt composition is maintained at a temperature, T.sub.c, during the preparation and coating of said coating melt composition, and where T.sub.c

摘要翻译： 一种热溶剂的水性固体颗粒分散体，其中所述热溶剂是水不混溶性酚衍生物，并且具有在30℃至约200℃之间的熔点Tm，其中所述分散体含有分散助剂，和 其中所述分散体中的热溶剂颗粒基本上是纳米晶体。 还公开了一种形成涂层的方法，包括以下步骤：提供热溶剂的固体颗粒水分散体，其中所述热溶剂是水不混溶的苯酚衍生物，并且具有30℃至约30℃的熔点Tm 并且其中所述分散体含有分散助剂; 将所述水性固体颗粒热溶剂分散体与涂料熔融组合物组合，其中所述涂料熔融组合物在制备和涂覆所述涂料熔融组合物期间保持在Tc的温度，并且其中Tc

公开(公告)号：US5679138A

公开(公告)日：1997-10-21

申请号：US565270

申请日：1995-11-30

申请人： John F. Bishop ,  David Alan Czekai

发明人： John F. Bishop ,  David Alan Czekai

IPC分类号： B41J2/01 ,  C09D11/00 ,  C09D11/02

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 .mu.m; (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）的混合物直至得到颜料粒度分布，其中90重量％的颜料颗粒的尺寸小于100纳米（nm）; （E）将研磨介质与步骤（D）中研磨的混合物分离; 和（F）稀释步骤（E​​）的混合物，得到具有适用于喷墨打印机的颜料浓度的喷墨油墨。

公开(公告)号：US5662279A

公开(公告)日：1997-09-02

申请号：US567794

申请日：1995-12-05

申请人： David Alan Czekai ,  Larry Paul Seaman ,  Dennis Edward Smith

发明人： David Alan Czekai ,  Larry Paul Seaman ,  Dennis Edward Smith

IPC分类号： B02C17/16

CPC分类号： B02C17/161 ,  Y10S977/773 ,  Y10S977/775 ,  Y10S977/888 ,  Y10S977/896 ,  Y10S977/90

摘要： A method of preparing milled solid particles of a compound comprises the steps of forming a slurry of a liquid medium, the compound and rigid milling media in a milling chamber, contacting the compound with the milling media while in the chamber to reduce the particle size of the compound, and thereafter separating the compound from the milling media by vacuum filtration through a removable filter probe immersed in the slurry. In a preferred embodiment, the milling media is a polymeric resin having a mean particle size of less than 300 .mu.m. The method enables the use of fine milling media which provides extremely fine particles of the compound while avoiding problems, e.g., decrease yields due to separator screen plugging, associated with prior art processes.

摘要翻译： 制备化合物的研磨的固体颗粒的方法包括以下步骤：在研磨室中形成液体介质，化合物和刚性研磨介质的浆液，同时在室中使化合物与研磨介质接触，以减小颗粒尺寸 该化合物，然后通过真空过滤通过浸在浆料中的可移除的过滤探针从研磨介质中分离出化合物。 在优选的实施方案中，研磨介质是平均粒径小于300μm的聚合物树脂。 该方法使得能够使用精细研磨介质，其提供化合物的极细颗粒，同时避免与现有技术方法相关的问题，例如降低由于分离器筛网堵塞引起的产率。