Siemens Aktiengesellschaft

Ernst Helwig

Heinz Hacker

The invention relates to agents for the surface treatment of flat insulating materials having a base of aromatic polyamides, and to a method for improving the surface characteristics of such flat insulating materials. According to the invention, such agents have the structure ##STR1## where at least one of the radicals R.sub.1 to R.sub.3 has a reactive group which can be incorporated into an impregnating resin system. Advantageously at least one of the radicals R.sub.1 to R.sub.3 has a reactive hydrogen atom or has an ethylenic or acetylenic unsaturated grouping.

Agent for the surface treatment of flat insulating materials

Lubricants for lacquered wires are provided comprising compounds of the type A-C-B, which compounds at room temperature have an ointment or soap-like consistency, wherein A is a chemical grouping containing reactive groups which permit chemical incorporation in a polymerizable impregnating resin system, B is a saturated or unsaturated aliphatic hydrocarbon radical, and C is a binding member in the form of a carbon, nitrogen, oxygen, or sulfur grouping. The lubricant is advantageously a 2,4-dienoxy-6-aminoalkyl (-ene)-s-triazine, particularly 2,4-dienoxy-6-aminostearyl-s-triazine. Such triazines are also useful according to another embodiment of the invention as lubricants for wire with enamel insulation.

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Bad Neustadt, Germany

Ernst Helwig