| 摘要 |
The use as emulsifiers, of copolymers of (a) olefinically unsaturated monomers and (b) poly-substituted ethylenes in which at least two of the substituents are aryl groups. The use of copolymers (A) as emulsifiers. Copolymers (A) are obtained by the single- or multi-stage radical copolymerization in aqueous medium of (a) olefinically unsaturated monomer(s) and (b) other unsaturated monomer(s) of formula (I). R<1>R<2>C=CR<3>R<4> (I) R<1>-R<4> = H or optionally substituted alkyl, cycloalkyl, alkylcycloalkyl, cycloalkyl-alkyl, aryl, alkylaryl, cycloalkylaryl, aralkyl or arylcycloalkyl, with the proviso that at least two of these R groups are optionally substituted aryl, aralkyl or arylcycloalkyl, preferably optionally substituted aryl groups. Independent claims are also included for: (1) coating powder suspensions (powder slurries) and coating powders obtained by emulsifying liquid component(s) containing liquid starting material(s) in an aqueous medium using an emulsifier with a surface tension of more than 30 mN/m in aqueous solution at the critical micelle-forming concentration, cooling to form a suspension of dimensionally stable particles (slurry) and isolating the particles (powder) (2) a method as described in (1) for the production of powder slurries and coating powder.
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