Patent ID: 6235826
Filing Date: 2001-05-22
Classification: H01B,H02K

Abstract:
A coating agent for producing an electric insulating coating on an electro steel sheet with good punching quality, weldability, annealing stability and a high insulation resistance, said agent comprising:a metal organic and an organic film former, the metal organic component being selected from the group consisting of tetravalent metallic acid esters and metal-chelate complexes, either having the general formula M(OR).sub.4 in which M stands for titanium or zircon and R stands for equal or different, straight-chained or branched, saturated or unsaturated C.sub.1 -C.sub.20 alkyl residues or chelates which are selected from the group consisting of dialkylamine, trialkylamine, dialkanolamine, trialkanolamine, monoglycolate, diglycolate, acetyl acetonate, ethyl acetoacetate, and ammonium lactate, and the organic component being selected from the group consisting of water-dilutable polyester, acryl acrylcopolymer, alkyd, phenol and amino resins which have neutralizable groups or which can be dispersed in an aqueous medium with emulsifiers.