Corona-resistant wire enamel compositions and conductors insulat

Details Corona-resistant wire enamel compositions and conductors insulat Corona-resistant wire enamel compositions and conductors insulat

1983-03-30

1985-01-15

Kendell, Lorraine T.

Stock material or miscellaneous articles

Coated or structually defined flake, particle, cell, strand,...

Rod, strand, filament or fiber

174120SR, 428383, 428384, 428389, 427118, 427120, B32B 900, B32B 1500, B32B 2700, H01B 700

Patent

active

044938730

ABSTRACT:
A corona-resistant wire enamel composition is described comprising a polyimide, polyamide, polyester, polyamideimide, polyesterimide, or polyetherimide resin and from about 1% to about 35% by weight of dispersed alumina particles of a finite size less than about 0.1 micron, the alumina particles being dispersed therein by high shear mixing. A method of providing corona resistant one and two-stage insulations for an electrical conductor employing the above compositions and an electrical conductor insulated with a one or two-stage coating of the wire enamel compositions are also disclosed.

REFERENCES:
patent: 2671069 (1954-03-01), Savage
patent: 2888424 (1959-05-01), Precopio et al.
patent: 2997526 (1961-08-01), Kessel et al.
patent: 3228883 (1961-01-01), DiGiulio
patent: 3361593 (1968-01-01), Sattler et al.
patent: 3742084 (1973-06-01), Olyphant, Jr. et al.
patent: 3962531 (1976-06-01), Lever et al.
patent: 4255471 (1981-03-01), Boldebuck et al.
patent: 4342814 (1982-08-01), Usuki et al.

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