Magnetic coating composition

Details Magnetic coating composition Magnetic coating composition

1976-06-04

1977-09-20

Edmundson, F.C.

Compositions

Magnetic

With wax, bitumen, resin, or gum

427 48, 427128, 428900, B05D 314, B05D 512, H01F 100

Patent

active

040495663

ABSTRACT:
A magnetic coating composition is disclosed which comprises a dispersion of magnetic particles in a solution of an epoxy resin having an average of between 1 and 3 epoxy groups per molecule and having an epoxy equivalent in the range about 400 to 4,000 and containing an organic acid which boils below 220.degree. C., the acid being present in amount equal to from 2 to 20% by weight of the contained magnetic particles. Magnetic recording media prepared by coating a substrate with the coating composition, subjecting the coated substrate to a magnetic field to orient the magnetic particles in a desired direction and then heating the coated substrate to evaporate the solvent and cure the resin exhibit high orientation ratios in the range 1.8 to 2.4.

REFERENCES:
patent: 2914480 (1959-11-01), Hagopian
patent: 3499789 (1970-03-01), Delimore
patent: 3833412 (1974-09-01), Akashi et al.
patent: 3955037 (1976-05-01), Marx et al.
patent: 3977984 (1976-08-01), Roberts

Affiliated with

Also associated with

Rating

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-669933