Bonded rare earth magnet and a process for manufacturing the sam

Details Bonded rare earth magnet and a process for manufacturing the sam Bonded rare earth magnet and a process for manufacturing the sam

1991-08-22

1993-08-31

Sheehan, John P.

Compositions

Magnetic

With wax, bitumen, resin, or gum

148302, C04B 3504

Patent

active

052406270

ABSTRACT:
A highly rustproof resin-bonded magnet made by using a specific rustproofing resin for coating the particles of a magnetic powder, bonding them to form a molded body, or coating its surface, or for two or all of those purposes. The specific resin is selected from ones containing groups of atoms having a power of forming a coordinate bond and a reducing action. More specifically, it is (a) a high molecular compound produced by reacting with an epoxy resin one or more of a polyhydric phenol having adjacent hydroxyls, a polyhydric phenolic carboxylic acid having adjacent hydroxyls, an ester of a polyhydric phenol and a polyhydric alcohol having adjacent hydroxyls, and a polycyclic and polyhydric phenol having adjacent hydroxyls, (b) a redox resin as a reduction agent or (c) a high molecular compound produced by curing a mixture of ascorbic acid, or a derivative thereof, and an epoxy resin.

REFERENCES:
patent: 4689163 (1987-08-01), Yamashita et al.
patent: 4810572 (1989-03-01), Ooe et al.
patent: 4881986 (1989-11-01), Sato et al.
patent: 4898625 (1990-02-01), Otsuka et al.
patent: 4902360 (1990-02-01), Ma et al.
patent: 4913745 (1990-04-01), Sato
patent: 4981635 (1991-01-01), Yamashita et al.
patent: 4988755 (1991-01-01), Dickens al.
patent: 5011552 (1991-04-01), Otsuka et al.
patent: 5149477 (1992-09-01), Yamashita et al.

Affiliated with

Also associated with

Rating

Bonded rare earth magnet and a process for manufacturing the sam does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Bonded rare earth magnet and a process for manufacturing the sam, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bonded rare earth magnet and a process for manufacturing the sam will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2295689