Stock material or miscellaneous articles – Composite – Of epoxy ether
Patent
1977-08-08
1978-10-24
Ansher, Harold
Stock material or miscellaneous articles
Composite
Of epoxy ether
260 13, 260 37EP, 428481, 428900, H01F 1002, B32B 516, B32B 2738
Patent
active
041222342
ABSTRACT:
A magnetic coating composition in which magnetic iron oxide particles are dispersed into a solution of three components, which upon evaporation of the solvent and curing with elevated temperatures, results in a very smooth durable polymer coating having the magnetic particles dispersed uniformly therein. The three components in solution are an epoxy resin having an epoxide equivalent weight of approximately 400 or above, a polyamine whch has a minimum of one primary amine group and a cellulose acetate butyrate resin which has approximately 17 weight % butyral content or above. The polyamine, which acts as a catalyst to crosslink the composition, can be substituted for by hydroxyl compounds, a preferred one being formic acid (HCOOH) - an organic acid.
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patent: 2732367 (1956-01-01), Shokal
patent: 3009847 (1961-11-01), Alles et al.
patent: 3474073 (1969-10-01), Higashi
patent: 3808079 (1974-04-01), Akashi et al.
patent: 4049566 (1977-09-01), Brilovich et al.
patent: 4070522 (1978-01-01), Ogasa et al.
patent: 4074012 (1978-02-01), Heikkinen
patent: 4075384 (1978-02-01), Suzuki et al.
Ansher Harold
Dysan Corporation
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