Oxidation resistant compositions for use with rare earth magnets

Details Oxidation resistant compositions for use with rare earth magnets Oxidation resistant compositions for use with rare earth magnets

1987-12-14

1989-10-24

Marquis, Melvyn I.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524434, 524435, 524431, 524403, 524779, 524780, 524785, 525523, 528 38, C08K 300

Patent

active

048763055

ABSTRACT:
An oxidation of rare earth magnetic materials and powders thereof are greatly reduced when coated with a binary or a ternary composition made from (a) at least one amino containing silane compound such as an aminosilane or a polyaminosilane, (b) at least one epoxy resin or (c) an epoxysilane compound. The composition is utilized to coat rare earth magnets or magnet materials or in association with a binder to form a matrix substantially encapsulating the same.

REFERENCES:
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patent: 3247280 (1966-04-01), Kanner
patent: 3868342 (1975-02-01), Magne
patent: 4241116 (1980-12-01), Taniyama et al.
patent: 4287326 (1981-09-01), Mikami
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patent: 4558007 (1985-12-01), Gray
patent: 4559387 (1985-12-01), Endo et al.
patent: 4602078 (1986-07-01), Joseph et al.
"Effects of Surface Treatment for Thermoplastic Magnet" by Satoh, et al, IEEE Transaction Journal on Magnetics in Japan, vol. TJMJ-1, No. 3, Jun. 1985, pp. 387 and 388.
"Thermoplastic Magnet Having Highly Improved Heat-Resistance" by Satoh, et al., IEEE Translation Journal on Magnetics in Japan, vol. TJMH-1, Nov. 8, 1985.
Julius Grant, ed. Hackh's Chemical Dictionary (New York, McGraw-Hill Book Co., 1972), p. 25.

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