Magnetic particles

Details Magnetic particles Magnetic particles

1988-03-14

1989-10-10

Bell, Janyce

Coating processes

Magnetic base or coating

Magnetic coating

264 13, 427129, 427214, 427222, 427343, B05D 512

Patent

active

048731021

ABSTRACT:
Magnetic polymer particles are formed by swelling porous, polymer particles and impregnating the particles with an aqueous solution of precursor magnetic metal salt such as an equimolar mixture of ferrous chloride and ferric chloride. On addition of a basic reagent such as dilute sodium hydroxide, the metal salts are converted to crystals of magnetite which are uniformly contained througout the pores of the polymer particle. The magnetite content can be increased and neutral buoyancy achieved by repetition of the impregnaton and neutralization steps to adjust the magnetite content to a desired level.

REFERENCES:
patent: 2582590 (1952-01-01), Heeren et al.
patent: 2721357 (1955-10-01), Hochberg
patent: 4123396 (1978-10-01), Rembaum
patent: 4438179 (1984-03-01), Solc
patent: 4624928 (1986-11-01), Margel

Affiliated with

Also associated with

Rating

Magnetic particles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Magnetic particles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic particles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1956575