Patent ID: 8349937
Filing Date: 2013-01-08
Classification: C08G,C08K,C08L,H01B

Abstract:
1. An insulating resin for insulating compositions in switchgear formed from the starting components comprising: a) a material containing at least one anhydride selected form the group consisting of a mixture of methyl isomers of methylbicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic anhydride and hydrogenated mixture of methyl isomers of methylbicyclo[2.2.1]hept-5-ene-2,3-dicarboxylic anhydride, b) a material containing an imidazole of the following structure: where R1 is selected from the group consisting of alkyl, long-chain alkyl, alkenyl, cycloalkyl, haloalkyl, aryl; R where one or more nonadjacent CH2 groups in suitable radicals may each independently be replaced by —O—, —S—, —NH—, —NR c) a filler comprising alumina flakes; d) a resin based on glycidyl esters: said components formed into said resin, wherein a ratio of material a) to material b), in weight:weight, lies between ≧50:1 and ≦300:1 and a proportion of material a) in the resin based on glycidyl esters, in weight:weight is from ≧0.8:1 to ≦1:1.