Foam-sealed electrical devices and method and composition theref

Details Foam-sealed electrical devices and method and composition theref Foam-sealed electrical devices and method and composition theref

1985-07-15

1987-02-03

Cockeram, Herbert S.

Electricity: conductors and insulators

With fluids or vacuum

With fluid stops

174 88R, 521116, 521117, 521902, 521137, H02G 304, C08G 1814, C08G 1810

Patent

active

046409785

ABSTRACT:
A method of sealing electrical fittings is provided. The method comprises foaming in situ a removable, flame retardant, solvent resistant, substantially closed cell isocyanurate foam. The isocyanurate foam is prepared from a two-part, liquid, foamable, curable composition, the parts being mixed at the time of application, the composition comprising, in a first part, a prereaction product of an isocyanate and a polyol, and, in a second part, catalyst, chain extending agent, flame retardant agent, and blowing agent. Also provided are an electrical fitting and cable duct or riser sealed with the isocyanurate foam.

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