High voltage insulating compositions containing organic polymeri

Details High voltage insulating compositions containing organic polymeri High voltage insulating compositions containing organic polymeri

1978-01-13

1980-04-15

Welsh, John D.

Compositions

Electrolytes for electrical devices

252 637, 252400A, 174137B, 174DIG1, 260 457P, 252 81, H01B 300

Patent

active

041983106

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 organic polymerizable 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.

REFERENCES:
patent: 2553643 (1951-05-01), Ellerhorst
patent: 3420792 (1969-01-01), Zuccaro
patent: 3622537 (1971-11-01), Needham
patent: 3626083 (1971-12-01), Minter
patent: 3645899 (1972-02-01), Linson
patent: 3793473 (1974-02-01), Pointer
patent: 3992352 (1976-11-01), Murch
patent: 4001128 (1977-01-01), Penneck
patent: 4058471 (1977-11-01), Glatti
Harper, Handbook of Wiring, Cabling and _Interconnections for Electronics, McGraw-Hill, 1973, pp. 6-25 and 6-26.
Modern Plastics Ency., 1973-1974, pp. 232, 233, 236.

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