Compositions – Electrolytes for electrical devices
Patent
1978-07-17
1980-06-03
Pitlick, Harris A.
Compositions
Electrolytes for electrical devices
174110E, 174137B, 174DIG1, 260 18EP, 252 635, H01B 340
Patent
active
042060664
ABSTRACT:
An arc track resistant, high voltage, filled synthetic resin insulator is disclosed which exhibits a wide range of desirable qualities heretofore unobtainable with any single type of prior insulator. The insulator hereof unexpectedly gives excellent arc track and flame resistance, along with a flexibilized yet rugged construction having good weatherability properties. These qualities are achieved through use of a relatively critical selection of components and proportions which also facilitate cast construction of the insulators by giving a pourable, yet highly filled liquid casting composition during the fabrication stage. The insulators include critical quantities of hydrated alumina (from about 60 to 75% by weight) and a synthetic resin matrix having expoxidized castor oil (18 to 24% by weight) and a glycidyl rigidizer therein, along with a curing agent and accelerator.
REFERENCES:
patent: 2997527 (1961-08-01), Kessel et al.
patent: 3351574 (1967-11-01), Hicks et al.
patent: 3445282 (1969-05-01), Olson et al.
patent: 3511922 (1970-05-01), Fisch et al.
patent: 3741929 (1973-06-01), Burton
patent: 3838055 (1974-09-01), Rinehart
patent: 4032393 (1977-06-01), Alfeis et al.
A. B. Chance Company
Pitlick Harris A.
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