Eco-Friendly, Colored Lacquer Palettes Derived from Catechol Lipid-Based Bioresin

Abstract

We report the method of production of eco-friendly, colored lacquer palettes that are characterized by excellent adhesion strength and strong durability from waterborne catechol lipid-based bioresin extracted from lacquer trees. We focused on the saturation behavior of the color of the coated surface based on the amount of the added pigments. The optical properties and colors of the pigment-containing lacquer were studied using Kubelka–Munk theory and the CIE L*a*b* color space, respectively. Color saturation for the colored lacquer-coated surfaces was achieved at the pigment content of 50 wt % for red and blue. When the pigment content was 40 wt %, color saturation was achieved for green and yellow. The materials exhibited excellent adhesive properties (5B), and the hardness was 2–3H. In addition, it was observed that with the progress of the aging time over 2 years, the color of the lacquer-coated surfaces changed, and a bright and intense surface was formed. The change in color could be attributed to the bleaching effect of the oriental lacquer binder. The results reported herein can potentially help in obtaining a green solution for preparing eco-friendly colored lacquer palettes and predicting the color development observed for highly decorative and protective coatings.