公开(公告)号：US4177317A

公开(公告)日：1979-12-04

申请号：US801162

申请日：1977-05-20

申请人： Eduard Schoenafinger ,  Paul Deigner ,  Eberhard Koester ,  Manfred Ohlinger ,  Dieter Schaefer ,  Werner Stumpfi ,  Juergen Amort ,  Claus-Dietrich Seiler ,  Heinz Nestler ,  Otto Ambros

发明人： Eduard Schoenafinger ,  Paul Deigner ,  Eberhard Koester ,  Manfred Ohlinger ,  Dieter Schaefer ,  Werner Stumpfi ,  Juergen Amort ,  Claus-Dietrich Seiler ,  Heinz Nestler ,  Otto Ambros

IPC分类号： G11B5/706 ,  G11B5/712 ,  H01F10/02

CPC分类号： G11B5/712 ,  G11B5/70636 ,  Y10S428/90 ,  Y10T428/2995

摘要： Chromium dioxide magnetic pigments can be stabilized against the loss of their magnetic properties by treating them, in alcoholic aqueous suspension, with a silane or a hydrolysis product thereof, so that when the pigment is isolated from the suspension medium the particles bear at least partially hydrolyzed silane on their surfaces, and then drying the magnetic pigment at from 50.degree. to 200.degree. C.

摘要翻译： 二氧化铬磁性颜料可以通过在醇水悬浮液中用硅烷或其水解产物处理来稳定其磁性能的损失，使得当颜料从悬浮介质中分离时，颗粒至少部分水解 硅烷，然后在50〜200℃干燥磁性颜料。