| 摘要 |
<p>The application relates to a method for preparing a pigment concentrate which is suitable, in particular, for the preparation of a powder coating. The pigment concentrate is prepared by pigment particles being comminuted in the presence of an aqueous binder to form a stable paste or suspension, the said paste or suspension formed being subjected to a drying treatment, and the pigment concentrate being collected. The binder used is preferably free of cosolvent, while expediently it is a resin having a glass transition temperature of from 25 DEG to 55 DEG C. Preferably, a dispersant is also present. Suitable dispersants are surfactants having an HLB value of from 10 to 18. By using a pigment concentrate formed according to the present method, a powder coating can be formed which no longer has a tinting strength reserve.</p> |
