公开(公告)号：US5800607A

公开(公告)日：1998-09-01

申请号：US675448

申请日：1996-07-03

Applicant: Dieter Schnaitmann ,  Martin Bohmer ,  Manfred Urban

Inventor： Dieter Schnaitmann ,  Martin Bohmer ,  Manfred Urban

IPC: C09B67/04 ,  C09B67/00 ,  C09B67/20 ,  C09B67/50

CPC classification number: C09B67/0022

Abstract: Process for the preparation of pigment preparations, which comprises wet milling the crude pigments which are present in coarsely crystalline state, or prepigments or pigments which are present in a form in which they are difficult to disperse, in a concentration of from 20 to 60% by weight based on the total weight of the pigment preparation, in a flocculation-stable liquid medium and in a stirred ball mill which is operated with a peripheral stirrer speed of more than 12 m/s, under the action of nonmetallic grinding media with a diameter of less than or equal to 1.0 mm, until the desired degree of fine division is reached, and then isolating the pigment preparation.

Abstract translation: 用于制备颜料制剂的方法，其包括湿法研磨以粗结晶状态存在的粗颜料或以其难以分散的形式存在的指示剂或颜料，浓度为20至60％ 基于颜料制剂的总重量，在絮凝稳定的液体介质中和在外部搅拌器速度大于12m / s的条件下操作的搅拌式球磨机中，在非金属研磨介质的作用下， 直径小于或等于1.0mm，直至达到所需的微细分割程度，然后分离颜料制剂。

公开(公告)号：US5755872A

公开(公告)日：1998-05-26

申请号：US834728

申请日：1997-04-01

Applicant: Manfred Urban ,  Dieter Schnaitmann ,  Martin Bohmer

Inventor： Manfred Urban ,  Dieter Schnaitmann ,  Martin Bohmer

IPC: C09B67/20 ,  C09B48/00 ,  C09B67/52

CPC classification number: C09B48/00

Abstract: A process for preparing quinacridone pigments A process for preparing pigments, mixed crystal pigments and pigment preparations based on linear unsubstituted or substituted quinacridones of the formula (I) ##STR1## in which the substituents R.sup.1 and R.sup.2 are identical or different and are hydrogen, chlorine, bromine or fluorine atoms or are C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or carboxamido groups which may be substituted by C.sub.1 -C.sub.6 -alkyl groups; or are phenoxy or C.sub.6 -C.sub.10 -aryl rings onto which further aromatic, aliphatic or heterocyclic rings can be fused, which process comprises hydrolyzing the reaction mixture resulting from cyclization of the respective dianilinoterephthalic acid with polyphosphoric acid or polyphosphate at a temperature of or above 110.degree. C. with water or an aqueous mineral acid solution and then isolating the pigments thus obtained directly; or subjecting the resulting prepigments, if desired after addition of organic solvents, to a finishing treatment and isolating the pigments; or subjecting the resulting coarsely crystalline crude pigments to fine dispersion and then isolating the pigments; or subjecting the prepigments obtained after fine dispersion, if desired after addition of solvents, to a finishing treatment and isolating the pigments. This gives quinacridone pigments having excellent coloristic and rheological properties.

Abstract translation: 制备喹吖啶酮颜料的方法基于式（I）的线性未取代或取代的喹吖啶酮制备颜料，混合晶体颜料和颜料制剂的方法其中取代基R 1和R 2相同或不同，并且为 氢，氯，溴或氟原子，或者可以被C 1 -C 6 - 烷基取代的C 1 -C 4 - 烷基，C 1 -C 4 - 烷氧基或甲酰胺基; 或者是其上可以稠合另外的芳族，脂族或杂环的苯氧基或C6-C10-芳基环，该方法包括水解由相应的二苯胺基对苯二甲酸与多磷酸或多磷酸盐在大于或等于110的温度环化而引起的反应混合物 用水或无机酸水溶液洗脱，然后直接分离得到的颜料; 或者如果需要，在加入有机溶剂之后对所得到的标号进行精加工处理并分离颜料; 或将所得粗结晶粗颜料进行细分散，然后分离颜料; 或者如果需要，在加入溶剂之后将精细分散后获得的标号进行精加工处理并分离颜料。 这使得喹吖啶酮颜料具有优异的色泽和流变性能。