Magnetite particles and process for production thereof

Details Magnetite particles and process for production thereof Magnetite particles and process for production thereof

1997-05-16

1998-06-02

Bonner, Melissa

Compositions

Magnetic

Iron-oxygen compound containing

428403, 428404, 252 6256, C04B 3526, C01G 4908

Patent

active

057594350

ABSTRACT:
Magnetite particles containing a silicon component inside, and having the silicon component exposed on the surface in a proportion of 0.05 to 2.0% by weight as silicon which have improved moisture resistance as indicated by moisture content of magnetite (% by weight), measured under high-temperature, high-humidity conditions (200.degree. C., Karl Fischer technique), and given by the equation (1)

REFERENCES:
patent: 5356712 (1994-10-01), Hashiuchi et al.
Chemical Abstract citation 105:195450; abstract for JP 61-124502 Jun. 12, 1986.

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