| abstract |
Novel aqueous epoxy resin emulsions which comprise n (A) at least one binder selected from the group consisting of epoxy resins and modified epoxy resins, n (B) at least one nonionic thickener and n (C) at least one catalyst for the curing, preparable by reacting at least one boron trifluoride complex with at least one compound containing at least one epoxide group, n dissolved and/or dispersed in water; processes for their production and their use as impregnating varnishes for electrical components, in particular for electrical windings. |