Papers by Keyword: Organic Pigment

Abstract: This report explores two key manufacturing processes, and assesses multiple parameters for optimization of these processes. High shear dispersion using a rotor-stator style homogenizer and high-energy grinding using a basket type mill with zirconium balls as the grinding media were studied. The variation between grinding organic and inorganic pigments was assessed as they give different challenges and require different operations to produce successful results. Obtaining the correct particle size distribution of pigments for decorative coatings is of paramount importance for achieving a high quality, functioning, aesthetically pleasing finished product. This analysis will explore the de-agglomeration and dispersion of inorganic TiO₂ and organic Red 6 pigments using basket milling technology. High energy basket mill grinding produced the smallest particle size and smallest particle size distribution comparing with high shear dispersion. Used technology allowed to achieve inorganic pigment TiO₂ particle size and particle size distribution suitable for use in coatings on natural nails. For organic pigment Red 6 used technology should be customized.

Abstract: A series of submicron organic pigment microcapsules with high pigment encapsulating efficiency and narrow particles size distribution was prepared via in-situ miniemulsion polymerization. The self-adhesive pigment microcapsules were applied to pigment printing of silk fabrics. It was found from printing qualities that, the K/S value, handle, dry and wet rubbing fastness of silk fabrics printed by pigment microcapsules were much better than those printed by traditional pigment paste. The TEM observation of the printed fabrics further indicated that the presence of adhesive polymeric layer on the pigment particles can remarkably improve the dispersion of pigment particles on fabric surface and the adhesion between pigment particles and the target fabric.