公开(公告)号：US3793074A

公开(公告)日：1974-02-19

申请号：US3793074D

申请日：1972-01-13

Applicant: BASF AG

Inventor： FRANKENTHAL K ,  SCHNELL G ,  BALZ W ,  PRUEGL R ,  HARTMANN J ,  STRITZINGER H

IPC: C09D5/23 ,  G11B5/702 ,  H01F10/02

CPC classification number: G11B5/7023

Abstract: Manufacture of magnetic recording media by preparing a dispersion of particulate magnetic pigment in a binder based on a mixture of polycondensates with the addition of organic solvents and, optionally, conventional additives, applying a coating of said dispersion to the substrate and finally drying or curing the coating. The binder used for the dispersion of magnetic pigment consists of a mixture of phenol/formaldehyde condensates and thermoplastic polyester of terephthalic and isophthalic acids and ethylene glycol and neopentyl glycol.

Abstract translation: 通过在基于缩聚物的混合物的基础上制备颗粒状磁性颜料在添加有机溶剂和任选的常规添加剂的混合物中制备磁记录介质，将所述分散体的涂层施加到基底上，最后干燥或固化 涂层。 用于磁性颜料分散的粘合剂由苯酚/甲醛缩合物和对苯二甲酸和间苯二甲酸和乙二醇和新戊二醇的热塑性聚酯的混合物组成。