H - Electricity – 01 – B
Patent
H - Electricity
01
B
31/156, 400/5126
H01B 3/40 (2006.01) H01B 3/00 (2006.01) H01B 7/295 (2006.01)
Patent
CA 1117686
HIGH IMPACT - ARC TRACK AND WEATHER RESISTANT POLYMER INSULATOR AND COMPOSITION Abstract of the Disclosure 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 unexpected- ly 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 expoxi- dized castor oil (18 to 24% by weight) and a glycidyl rigidizer therein, along with a curing agent and accelerator. (Docket No. 16532)
311009
Chance (a. B.) Company
Gowling Lafleur Henderson Llp
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