Лако-красочные материалы — производство

Thermoplastic acrylics do not pose any particular problems in terms of pigmentation. Indeed, through control of the polymer’s polarity, it is possible to introduce specific pigment wetting properties via, for instance, -C00H functionality or tertiary amine functionality (using dimethyl amino ethyl methacrylate). Certain acrylic resins have been developed specifically for use in dispersing pigments, e. g. Paraloids B99 and DM55 (Rohm + Haas) or Neocryl B817 (Zeneca Resins).

Alternatively, the pigment can be dispersed into the main resin solution using high speed dispersers, sand mills or other dispersing equipment. However, in certain applications (e. g. automotive finishes), where a wide range of colours is to be formulated, pigment millbases may be produced in a plasticiser which is common to the different grades of the finished product.