Tree-resistant ethylene polymer compositions

Details Tree-resistant ethylene polymer compositions Tree-resistant ethylene polymer compositions

1983-11-02

1985-04-30

Seccuro, Carman J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524285, 524286, 524287, 524293, 524294, 524295, 524299, 524585, 428383, 428372, C08K 512

Patent

active

RE0318744

ABSTRACT:
Propagation of electrical trees and water trees in electrical insulation made of ethylene homopolymers or copolymers with an unsaturated monomer is inhibited by the addition to the insulating composition of an organic carboxylic ester having at least one aromatic ring and at least three carboxylic ester groups, the ester being liquid at the operating temperature of the electrical equipment in which the insulation is used. The main utility of the inhibitors of this invention is in the primary insulation for power transmission cables, especially those used in high voltage applications.

REFERENCES:
patent: Re29099 (1977-01-01), Kietzman et al.
patent: 2964497 (1960-12-01), Kibler et al.
patent: 3223752 (1965-12-01), Tate et al.
patent: 3639376 (1972-02-01), DePierri et al.
patent: 4239803 (1980-12-01), Ohzeki et al.
patent: 4282333 (1981-08-01), Irie et al.
J. Nanu, M. Tolan, C. Cojemu (Rumanian Title and Text English Abstract), Materiale Plastice 12, No. 3, 1975, pp. 138-149.

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