High voltage insulating compositions containing phosphorus compo

Details High voltage insulating compositions containing phosphorus compo High voltage insulating compositions containing phosphorus compo

1978-01-13

1980-08-26

Smith, John D.

Stock material or miscellaneous articles

Composite

174110R, 174110S, 174110E, 174110SR, 174137B, 174138C, 252 632, 252 635, 252 637, 252 64, 252 63, 260 457PS, 260 457P, 260 457PH, 260 459NP, 428379, H01B 300, H01B 330

Patent

active

042196078

ABSTRACT:
New high voltage insulating compositions are disclosed. The compositions comprise a polymer (e.g. a polysiloxane, epoxide resin or a polymer of one or more olefins or substituted olefins), an antitracking additive (e.g. an alumina hydrate), and certain phosphorus-containing compounds which have been found to provide the compositions with greatly improved resistance to erosion by high voltage stress. The phosphorus-containing compounds include phosphonates, phosphates, phosphites, phosphinates, phosphonites, phosphinites, phosphine oxides and sulfides, and phosphines, and salts and complexes thereof. The phosphorus-containing compound can react in situ with the polymer or other ingredients of the composition.

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