公开(公告)号：US5660760A

公开(公告)日：1997-08-26

申请号：US688216

申请日：1996-07-29

申请人： Attila Vass ,  Wolf-Dieter Schroeer ,  Hans-Heinrich Credner ,  Hildegard Fischer

发明人： Attila Vass ,  Wolf-Dieter Schroeer ,  Hans-Heinrich Credner ,  Hildegard Fischer

IPC分类号： G11B5/702 ,  G11B5/712

CPC分类号： G11B5/712 ,  G11B5/7028 ,  Y10S428/90

摘要： In the preparation of dispersions of magnetic pigments, it was found that excellent dispersion stability is achieved when compounds which are selected from the group consisting of quaternary ammonium compounds, guanidines, piperidines, alkylated or ethoxylated amines, diamines, polyamines or mixtures thereof, ethanolic KOH solutions, metal alkoxylates, Grignard compounds and certain metal hydrides are used as codispersants. The compounds are added in an amount of 0.15-4% by weight, based on the magnetic pigment.

摘要翻译： 在制备磁性颜料的分散体时，发现当选自季铵化合物，胍胺，哌啶，烷基化或乙氧基化胺，二胺，多胺或其混合物的化合物，乙醇KOH 溶液，金属烷氧基化物，格利雅化合物和某些金属氢化物用作分散剂。 相对于磁性颜料，化合物的添加量为0.15-4重量％。