VERFAHREN ZUR ERHOEHUNG DER ELEKTROSTATISCHEN AUFLADBARKEIT VON PULVERLACKEN ODER PULVERN UND DEREN VERWENDUNG ZUR OBERFLAECHENBESCHICHTUNG VON FESTEN GEGENSTAENDEN.

摘要

Increasing the electrostatic charge capacity of powder lacquers or powder for surface coating of solid objects is effected by incorporating ca. 0.01-10 (wt.)% of saline, cationic cpds(s). (I) homogenously, so that (I) are dissolved or dispersed in the powder lacquer system or powder, (I) having the formula: R1-4 independently =H, linear or branched 1-30C alkyl, mono- or polynuclear 5-12C cycloaliphatic gps., oxyethyl gps. of the formula -CH2-CH2-O)n-R (with n=1-10 and R=H, 1-4C alkyl or acyl), mono- or polynuclear aromatic or araliphatic gps., in which the aliphatic, aromatic and araliphatic gps. can be substd. by OH, 1-4C alkoxy, sec. or tert. amino, acid amide and/or acid imide gps. and the alkyl, cycloalkyl, aralkyl and aryl gps. for R1-4 can be substd. by F, Cl or Br; X=P, As or Sb and if X=As or Sb, at least one of R1-4 not=H; A(-)=the equiv. of an (in)organic anion. More specifically R1-4=1-22C alkyl, phenyl, benzyl and/or -(CH2-CH2-O)n-R (with n=1-10 and R=H, 1-4C alkyl or acyl); A(-)= Cl, Br, SO4, HSO4, OH, BF4, PF6, NCS, ClO4, AsF6, meta- or ortho-phosphate, molybdate, tungstate, phosphomolybdate, the equiv. of an anion of a P, Mo, W or Si iso- or heteropolyacid, a phosphonic acid or phenol- or napthol-carboxylic or -sulphonic acid. The powder (lacquer) is based on epoxide resin, polyester resins contg. OH and COOH gps. and/or acrylic resins. It contains ca. 0.1-5%(I). (I) are incorporated in the form of a dry and ground powder, dispersion, master batch or soln.