Claims
- 1. A composition for a rare-earth bonded magnet comprising a rare-earth magnetic powder coated with a heat resisting addition polymerizable thermosetting material consisting essentially of a monomer or polymer of 2,2-bis(cyanatophenyl) propane in an amount of not more than 2 wt % based on the weight of the magnetic powder.
- 2. The composition of claim 1, wherein the rare-earth magnetic powder is coated with the heat resisting addition polymerizable material in an amount of from 0.01-1.00 wt % based on the weight of the magnetic powder.
- 3. A rare-earth bonded magnet prepared by agglomerating a rare-earth magnetic powder coated with a heat resisting addition polymerizable thermosetting material consisting essentially of a monomer or polymer of 2,2-bis(cyanatophenyl) propane in an amount of not more than 2 wt % based on the weight of the magnetic powder together with a binder.
- 4. The rare-earth bonded magnet of claim 3, wherein the rare-earth magnetic powder is coated with the heat resisting addition polymerizable material in an amount of from 0.01-1.00 wt % based on the weight of the magnetic powder.
- 5. The rare-earth bonded magnet of claim 3, prepared by agglomerating a rare-earth magnetic powder coated with a heat resisting addition polymerizable thermosetting material consisting essentially of a monomer or polymer of 2,2-bis(cyanatophenyl) propane in an amount of not more than 2 wt % based on the weight of the magnetic powder together with a binder and a metallic catalyst comprising an organo metallic salt.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3-345039 |
Dec 1991 |
JPX |
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CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation-in-part of application Ser. No. 07/996,136, filed Dec. 23, 1992, now abandoned.
US Referenced Citations (3)
Number |
Name |
Date |
Kind |
2904875 |
Trigg et al. |
Sep 1959 |
|
4973415 |
Ohmachi et al. |
Nov 1990 |
|
5176842 |
Kuwazawa et al. |
Jan 1993 |
|
Foreign Referenced Citations (5)
Number |
Date |
Country |
0549149 |
Jun 1993 |
EPX |
3803538 |
Aug 1988 |
DEX |
63-24607 |
Feb 1988 |
JPX |
1-114006 |
May 1989 |
JPX |
2-6573 |
Jan 1990 |
JPX |
Non-Patent Literature Citations (3)
Entry |
Patent Abstracts of Japan, vol. 13, No. 354 (E-802) 8 Aug. 1989. |
Patent Abstracts of Japan, vol. 14, No. 344 (E-0955) 25 Jul. 1990. |
Patent Abstracts of Japan, vol. 14, No. 134 (C-0701) 14 Mar. 1990. |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
996136 |
Dec 1992 |
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