Enhanced oxidation resistant polymeric insulation composition for air-cooled generators
AssigneeSiemens Westinghouse Power Corporation
InventorJames D. B. Smith
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Abstract
A high voltage capable, insulating and resinous composition is disclosed. An epoxy-anhydride resin is prereacted with an antioxidant oligomer selected from the group consisting of organophosphorus compounds, sterically-hindered alkylated phenolics, alkyl and aryl thio-esters, alkyl and aryl thio-phosphites, thiazoles, lactones, hydroxylamines, and maleimides.
Claims16
A high voltage capable, insulating and resinous composition comprising an epoxy-anhydride resin that has been prereacted with an antioxidant selected from the group consisting of organophosphorus compounds, sterically-hindered alkylated phenolics, alkyl and aryl thio-esters, alkyl and aryl thio-phosphites, thiazoles, lactones, hydroxylamines, and maleimides.
A high voltage capable, insulating and resinous composition comprising an epoxy-anhydride-styrene resin having an organo-phosphorus antioxidant prereacted with the resin.
A method of forming a resinous composition used in high voltage insulators comprising the step of prereacting an epoxy-anhydride resin with an antioxidant selected from the group consisting of organophosphorus compounds, sterically-hindered alkylated phenolics, alkyl and aryl thio-esters, alkyl and aryl thio-phosphites, thiazoles, lactones, hydroxylamines, and maleimides.
A high voltage capable, insulating and resinous composition comprising a thermosetting polymeric resin that has been prereacted with an antioxidant selected from the group consisting of sterically-hindered alkylated phenolics, alkyl and aryl thio-esters, alkyl and aryl thio-phosphites, thiazoles, lactones, hydroxylamines, and maleimides.
Dependencies are inferred from the claim text.