Document Type and Number:
Japanese Patent JPS5543027
Kind Code:
B2
Abstract:
A finely divided magnetite pigment such as is used in magnetic tapes is stabilized against oxidation by contact with a heterocyclic nitrogen compound such as morpholine, triazole, piperazine or substitution products thereof. The heterocyclic compound can be applied as a solution or in vapor form.
Application Number:
JP12047078A
Publication Date:
November 04, 1980
Filing Date:
October 02, 1978
Export Citation:
International Classes:
C09C1/00; C09C1/22; C09C1/24; C09C3/08; G11B5/706