公开(公告)号：US06506245B1

公开(公告)日：2003-01-14

申请号：US09698328

申请日：2000-10-27

申请人： Thomas A. Kinney ,  Friedrich K. von Gottberg ,  Yuan Yu ,  John F. Welch

发明人： Thomas A. Kinney ,  Friedrich K. von Gottberg ,  Yuan Yu ,  John F. Welch

IPC分类号： C09B6700

CPC分类号： C09D11/34 ,  C09B67/0004 ,  C09D11/037 ,  C09D11/322

摘要： Colored pigments having one or more desired parameters and/or properties are described. These parameters and/or properties include: a) a particles size of from about 10 nm to about 300 nm; b) an accusizer number of less than 1010 particles/ml of dispersion at 15% solids which are greater than 0.5 micron; c) a filterability such that when in a liquid medium, 100 ml having 10% solids of the colored pigment filters through a 3 micron nylon absolute filter; d) a colored pigment purity of greater than about 80%, based on extractable material; and/or e) a stability such that the above-described properties do not change by more than 50% at 25 degrees C for at least one week. Colored pigments having at least one organic group and having one or more of the above-described characteristics is also described as well as a process for preparing surface-modified colored pigments. The process involves combining at least one treating agent and at least one type of colored pigment(s) in a container to form a mixture and subjecting the mixture to high shearing and introducing at least one diazotizing agent to the mixture at least for a portion of time while the high shearing is taking place, and preferably during the entire time that high shearing is taking place, such that a reaction product is formed and contains surface-modified colored pigment(s).

摘要翻译： 描述具有一个或多个所需参数和/或性质的有色颜料。 这些参数和/或性质包括：a）约10nm至约300nm的粒度; b）大于0.5微米的15％固体的小于1010个/ ml分散体的指示剂数; c）过滤性，使得当在液体介质中，具有10％固体的着色颜料的100ml通过3微米尼龙绝对过滤器过滤; d）基于可萃取材料的有色颜料纯度大于约80％; 和/或e）稳定性，使得上述性质在25℃下至少不超过50％变化至少一周。 还描述了具有至少一个有机基团并具有一种或多种上述特征的着色颜料以及制备表面改性着色颜料的方法。 该方法包括将至少一种处理剂和至少一种类型的有色颜料混合在容器中以形成混合物，并使混合物经受高剪切，并将至少一种重氮化试剂至少引入至少一部分 并且优选在高剪切发生的整个时间内形成反应产物并含有表面改性的着色颜料。

公开(公告)号：US4001341A

公开(公告)日：1977-01-04

申请号：US340101

申请日：1964-01-24

申请人： John F. Welch ,  Frank P. Civardi

发明人： John F. Welch ,  Frank P. Civardi

IPC分类号： C07C37/72 ,  C07C37/28

CPC分类号： C07C37/72

摘要： 1. A process for purifying, in a countercurrent extraction system, a crude 2,6-xylenol feed of 20 to 98% by weight initial purity containing phenolic impurities consisting essentially of phenol and cresols comprising introduction of aqueous inorganic alkali countercurrently to a phenolic impurity-solvent hydrocarbon phase and said crude 2,6-xylenol feed, said aqueous inorganic alkali being introduced at the top of a countercurrent extraction rectifier, said phenolic inpurity-solvent hydrocarbon phase being introduced at the bottom of said countercurrent rectifier, and said crude 2,6-xylenol feed being introduced at a point intermediate thereto, whereby a substantially pure 2,6-xylenol-solvent hydrocarbon stream is removed from the top of the countercurrent extraction rectifier and a first aqueous phase stream is removed from the bottom of the countercurrent extraction rectifier consisting essentially of an aqueous solution of the inorganic alkali salts of the phenolic impurities and a minor portion of the 2,6-xylenol, recovering said portion of the 2,6-xylenol from its aqueous alkali salt solution by contacting it countercurrently with a phenolic impurity-solvent hydrocarbon phase in a stripping zone whereby the first aqueous phase is introduced into the top of said stripping zone and the phenolic impurity-solvent hydrocarbon phase is introduced at the bottom of said stripping zone whereby a phenolic impurity-solvent hydrocarbon-2,6-xylenol stream is recovered from the top of the stripping zone and a portion recycled to the crude 2,6-xylenol feed into the countercurrent extraction rectifier, and a second aqueous phase stream is removed from the bottom of the stripping zone consisting essentially of an aqueous solution of the inorganic alkali salts of the phenolic impurities essentially free of 2,6-xylenol, springing the phenolic salts by addition of acid thereto, recovering the free phenolic impurities essentially free of 2,6-xylenol by extraction from the acidified second aqueous stream with a solvent hydrocarbon to form a phenolic immpurity-solvent hydrocarbon phase and recycling a portion of said phenolic impurity-solvent hydrocarbon phase essentially free of 2,6-xylenol to the bottom of the stripping zone for recovery of the 2,6-xylenol from its aqueous inorganic alkali salt solution.