POLYMERE KONDITIONIERUNGSMITTEL ZUR VORBEHANDLUNG VON NICHTMETALLISCHEN OBERFLAECHEN FUER EINE CHEMISCHE METALLISIERUNG.

摘要

Polymeric condensation prods. (I) contg. repeating units of formula (II) are useful as conditioning agents for the pretreatment of non-metallic surfaces (''pre-dip'') before activation for subsequent chemical metallisation. In the formulae A1 A2 = 2-4C alkylene; A3 = opt. OH-substd. 2-4C alkylene; R1, R4 = H, 1-12C alkyl or benzyl; R2, R3 = 1-12C alkyl or benzyl; R5, R6 = 1-12C alkyl, OH-substd. 2-12C alkyl or benzyl; n,m,o,p,q,r = 0 or 1. Repeating units have formula (III) (with R7, R8 = 1-12C alkyl or benzyl; s, t = 0 or 1); (I) is a condensation prod. derived from piperazine and epichlorhydrin, in which the N atoms are 0-100% quaternised with 1-12C alkyl gps. or 0-80% quaternised with benzyl gps., and is used in the form of a salt soluble in the aq. application bath; concn. of (I) is 0.001-1 wt.%, bath temp. is 10-60 deg.C and application time is 15 secs. 30 mins.