Title:
【発明の名称】磁気記録媒体
Document Type and Number:
Japanese Patent JPH04501334
Kind Code:
A
Abstract:
The invention relates to a magnetic recording medium which is comprised of magnetic particles and a binder. The binder is a highly cross-linked tridimensional polyurethane formed of a branched polyol including at least 8 % by mass of OH groups and having a molecular weight lower than 4000 and of an isocyanate prepolymer having at least 3 isocyanate functions. In one embodiment, the lubricant is polytetrafluoroethylene in powder form of which at least 90 % of the particles have a size lower than 3 mu m and is present for less than 2 % by mass based on the mass of magnetic particles. Application to the production of a magnetic medium which is on the one hand hard and resistant and on the other hand coherent and little abrasive.
More Like This:
Inventors:
Reine, Antoine
Kad, Bernard
Kad, Bernard
Application Number:
JP51137489A
Publication Date:
March 05, 1992
Filing Date:
October 17, 1989
Export Citation:
Assignee:
Kodak-Putty
International Classes:
C09D5/23; C09D175/00; C09D175/04; C10M107/38; G11B5/702; G11B5/71; C10N40/18; (IPC1-7): G11B5/702
Attorney, Agent or Firm:
Aoki Akira (3 outside)