Insulated electrical cable containing an agent for decontaminating and sealing the interior space thereof

Claim 1

An insulated electrical device containing a plurality of insulated wire conductors, said device having interior spaces between the insulated wire conductors which contain a cured, cross-liked, mineral oil extended polyurethane which is non-spewing, comprising: (a) from about 8 to about 45 parts by weight, of polyurethane, said polyurethane being prepared by reacting, (i) a polyol selected from the group consisting of castor oil, polyether polyols, hydroxyl bearing homopolymers of butadiene, hydroxyl bearing copolymers of butadiene and styrene, and combinations thereof, with (ii) a polyisocyanate prepolymer prepared by reacting a polyisocyanate with a polyol selected from the group consisting of castor oil, polyether polyols, hydroxyl bearing homopolymers of butadiene, hydroxyl bearing copolymers of butadiene and styrene, and combinations thereof, (b) from about 25 to about 75 parts, by weight, of mineral oil, and (c) from about 10 to about 35 parts, by weight, of coupling agent, said coupling agent being characterized by (i) being miscible in all proportions with said mineral oil, (ii) having a solubility parameter between 7.0 and 9.5, (iii) having a hydrogen bonding index number in the range of from 6.0 to 12.0, and (iv) being non-reactive with the polyurethane percursor, and wherein the cured, cross-linked, mineral oil extended polyurethane is further characterized by the presence of a polybutadiene moiety in the polyurethane structure.