Rectangular parallelopipedic lepidocrocite particles and magneti

Details Rectangular parallelopipedic lepidocrocite particles and magneti Rectangular parallelopipedic lepidocrocite particles and magneti

1997-08-08

2000-02-29

Resan, Steven A.

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

428216, 428329, 428403, 428404, 428694BS, 428900, 106456, 252 6256, 423632, 423634, G11B 5708

Patent

active

060306882

ABSTRACT:
Rectangular parallelopipedic lepidocrocite particles of the present invention have a minor axial diameter of 0.045 to 0.5 .mu.m, a major axial diameter of 0.05 to 1.0 .mu.m, and a thickness of 0.001 to 0.3 .mu.m, which are individual. Such rectangular parallelopipedic lepidocrocite particles according to the present invention are firstly used as a coloring pigment for paints, resin moldings, printing ink, road asphalt, cosmetics, etc., and secondly used as a non-magnetic material for non-magnetic undercoat layers which are formed on non-magnetic substrates which constitute a substrate for magnetic recording media, and which have an excellent surface smoothness and a high strength.

REFERENCES:
patent: 3382174 (1968-05-01), Hund
patent: 4729846 (1988-03-01), Matsui et al.
patent: 5503911 (1996-04-01), Aoki et al.
patent: 5541008 (1996-07-01), Hatawaka et al.
patent: 5587232 (1996-12-01), Hayashi et al.
patent: 5686378 (1997-11-01), Katamoto
6001 Chemical Abstracts 114 (1991) Mar. 25, No. 12 105209a Manufacture of lepidocrocite powder.

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