Borgwarner Inc.

Raychem Limited

Nicodemus E Boyer

David D Nyberg

Travers K Cammack, Ii

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 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.

High voltage insulating compositions containing phosphorus compounds

Flame-retardant polymer compositions containing mono or bis(haloarylamino)triazines or mono or bis(haloarylthio)triazines. These triazines impart a high degree of flame retardance to all types of normally flammable polymers but especially to ABS polymers.

Flame-retardant polymers with 1,3,5-triazines having halo- and halo-aryl

Flame-retardant polymer compositions containing tris(haloarylamino)triazines or tris(haloarylthio)triazines. These triazines impart a high degree of flame retardance to all types of normally flammable polymers but especially to ABS polymers.

Flame-retardant triazines

Hexa(haloalkyl)mono/hydroxy/alkyl pentaerythritol triphosphite compounds are disclosed. The compounds are prepared by reaction of pentaerythritol alkylene oxide adducts with 3 moles of a tris(haloalkyl)phosphite.

Halogen containing phosphorus monools

Flame retardant graft polymers are prepared by graft polymerizing a phosphinyl-substituted acrylonitrile and at least one other vinyl monomer copolymerizable therewith in the presence of a rubber substrate. Polymers containing greater than 0.6% by weight, preferably 0.8 to 12.0% by weight, phosphorus exhibit flame retardant characteristics, which may be further improved by compounding with bis-halophenoxyalkanes.

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Parkersburg, WV, United States of America

Nicodemus E Boyer