Dielectric compositions stabilized against water treeing with or

Details Dielectric compositions stabilized against water treeing with or Dielectric compositions stabilized against water treeing with or

1979-09-18

1981-04-21

Pitlick, Harris A.

Compositions

Fluent dielectric

Si-containing

174110PM, 174110S, 252574, 260 459R, 427117, H01B 330

Patent

active

042631580

ABSTRACT:
A dielectric composition comprising ethylene polymer and effective amounts, as a water treeing inhibitor, of at least one organo silane of the following formula: ##STR1## wherein R and R.sub.1 are independently selected from hydrogen, a hydrocarbyl group or substituted hydrocarbyl groups wherein the substituents are hydroxy, halogen, nitro, C.sub.1 to C.sub.8 alkyl, C.sub.1 to C.sub.8 alkoxy; or R and R.sub.1 together with the adjacent carbon atom form a ring of 3 to 7 carbon atoms; R.sub.2 is C.sub.1 to C.sub.8 alkyl, C.sub.1 to C.sub.18 alkoxy, C.sub.6 to C.sub.18 aryl, C.sub.1 to C.sub.8 acyloxy, C.sub.6 to C.sub.18 substituted or unsubstituted aryloxy; R.sub.3 and R.sub.4 are independently selected from C.sub.1 to C.sub.18 alkoxy, C.sub.6 to C.sub.18 substituted or unsubstituted aryloxy or C.sub.1 to C.sub.8 acyloxy; Y is C.sub.1 to C.sub.8 alkylene, C.sub.6 to C.sub.18 substituted or unsubstituted arylene or --CH.sub.2 CH.sub.2 NH(CH.sub.2).sub.3 --.
Partial condensation products of the silanes also have been found to inhibit water treeing in ethylene polymers.

REFERENCES:
patent: 2942019 (1960-06-01), Pike et al.
patent: 3649542 (1972-03-01), Hasebe et al.
patent: 3674695 (1972-07-01), Wuerstlin et al.
patent: 3943271 (1976-03-01), Bahder et al.
patent: 3956420 (1976-05-01), Kato et al.
patent: 4035311 (1977-07-01), Feichtmayr et al.
patent: 4042776 (1977-08-01), Matsuba et al.

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