Union Carbide Corporation

Union Carbide Chemicals & Plastics Technology Corporation

Robert J Turbett

Arnold C Ashcraft

Timothy R Burke

Herbert E Petty

Tree resistant compositions

The disclosure of this application is directed to a composition which serves to improve the water-treeing resistance of polymeric compositions comprising a hydrocarbon-substituted diphenyl amine and a high molecular weight polyethylene glycol. Polymeric compositions containing the water-tree retardant additives are useful as extrudates about electrical conductors.

Compositions of hydrocarbon-substituted diphenyl amines and high

Compositions, devoid of fillers, comprising an ethylene polymer and an N-phenyl substituted amino silane, which can be extruded about electrical conductors to provide insulation thereon which is resistant to the formation of water trees.

Ethylene polymers stabilized against water-treeing by N-phenyl

A dielectric composition comprising ethylene polymer and effective amounts, as a water treeing inhibitor, of at least one organo silane of the following formula: ##STR1## wherein R and R.sub.1 are independently selected from hydrogen, a hydrocarbyl group or substituted hydrocarbyl groups wherein the substituents are hydroxy, halogen, nitro, C.sub.1 to C.sub.8 alkyl, C.sub.1 to C.sub.8 alkoxy; or R and R.sub.1 together with the adjacent carbon atom form a ring of 3 to 7 carbon atoms; R.sub.2 is C.sub.1 to C.sub.8 alkyl, C.sub.1 to C.sub.18 alkoxy, C.sub.6 to C.sub.18 aryl, C.sub.1 to C.sub.8 acyloxy, C.sub.6 to C.sub.18 substituted or unsubstituted aryloxy; R.sub.3 and R.sub.4 are independently selected from C.sub.1 to C.sub.18 alkoxy, C.sub.6 to C.sub.18 substituted or unsubstituted aryloxy or C.sub.1 to C.sub.8 acyloxy; Y is C.sub.1 to C.sub.8 alkylene, C.sub.6 to C.sub.18 substituted or unsubstituted arylene or --CH.sub.2 CH.sub.2 NH(CH.sub.2).sub.3 --. Partial condensation products of the silanes also have been found to inhibit water treeing in ethylene polymers.

Dielectric compositions stabilized against water treeing with organo

A dielectric composition devoid of filler and resistant to water treeing comprising ethylene polymer, antioxidant for said polymer, and effective amounts, as a water treeing inhibitor, of at least one organo silane of the following formula: ##STR1## wherein R.sub.1 is hydrogen or C.sub.1 to C.sub.4 alkyl; Y is C.sub.1 to C.sub.8 alkylene or C.sub.6 to C.sub.18 substituted or unsubstituted arylene; R.sub.2 is C.sub.1 to C.sub.8 alkyl, C.sub.1 to C.sub.8 alkoxy, C.sub.6 to C.sub.18 substituted or unsubstituted aryl, C.sub.1 to C.sub.8 acyloxy, C.sub.6 to C.sub.18 substituted or unsubstituted aryloxy; R.sub.3 and R.sub.4 are independently selected from C.sub.1 to C.sub.8 alkoxy, C.sub.1 to C.sub.8 acyloxy or C.sub.6 to C.sub.18 substituted or unsubstituted aryloxy.

Dielectric composition stabilized against water treeing with organo

A dielectric composition comprising ethylene polymer and effective amounts, as a water treeing inhibitor, of at least one epoxy containing organo silane.

Dielectric compositions comprising ethylene polymer stabilized against

Insulated wire or cable having primary insulation between copper conductor and moisture barrier filler and wherein the primary insulation comprises ethylene polymer having a density of about 0.928 to 0.955, Copper deactivating amounts of at least one organic compound which is an alkyl hydroxy phenyl alkanoyl hydrazide, and/or a substituted amido triazole, and Antioxidant effective quantities of at least one organic compound having a molecular weight of .gtoreq. 550 and which contains .gtoreq. four hindered phenolic groups per molecule thereof.

Insulated wire or cable

Insulated wire or cable having primary insulation between copper conductor and moisture barrier filler and wherein the primary insulation comprises: Ethylene polymer having a density of about 0.928 to 0.955, Copper deactivating amounts of at least one organic compound which is an oxalyl dihydrazide, and Antioxidant effective quantities of at least one organic compound having a molecular weight of .gtoreq.550 and which contains 2 or 3 hindered phenolic groups per molecule thereof.

Growing community of inventors

Millington, NJ, United States of America

Robert J Turbett