Chemically reactive resin beads and to methods of their manufact

Details Chemically reactive resin beads and to methods of their manufact Chemically reactive resin beads and to methods of their manufact

1975-10-23

1976-08-31

Edmundson, F.C.

Compositions

Magnetic

With wax, bitumen, resin, or gum

252 6253, C04B 3504, H01F 126

Patent

active

039779840

ABSTRACT:
Resin beads impregnated with magnetic powder, e.g. barium ferrite or .gamma.-iron oxide magnetically aligned and located discretely with respect to each other are formed by suspending the beads in a liquid while polymerizing the resin and subjecting the beads to an aligning magnetic field during a portion of the process of polymerization of the resin at which the resin viscosity is sufficient to permit rotation of the magnetic particles and yet sufficiently high to prevent lateral movement, and hence clumping of the magnetic particles, e.g. a molecular weight range of between 1,000 and 10,000 and a viscosity of between 5 and 50 poise.

REFERENCES:
patent: 3066355 (1962-12-01), Schloemann et al.
patent: 3067140 (1962-12-01), Davis
patent: 3117092 (1964-01-01), Parker
patent: 3560378 (1971-02-01), Weiss et al.
patent: 3629118 (1971-12-01), Isserlis
Encyclopedia of Polymer Science and Technology, Interscience, Pub. Corp., New York, vol. II, p. 3, vol. XII, pp. 66, 90.

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