Abstract: The present disclosure relates to a pigment dispersion comprising silane-modified colloidal silica particles, an organic and/or inorganic pigment, a water-soluble thickening polymer in an amount of 0.1 wt. %, and water. The pigment dispersion is useful for tinting paint compositions, and exhibits excellent storage stability and washout resistance of the resulting coating. Another aspect of the present disclosure relates to a method for tinting a paint composition.
Type:
Application
Filed:
March 13, 2020
Publication date:
May 19, 2022
Applicants:
NOURYON CHEMICALS INTERNATIONAL B.V., KEIMFARBEN GMBH
Inventors:
Peter Harry Johan GREENWOOD, Patrick WILHELM, RĂ¼diger LUGERT, Franz HEIBERGER, Florian ZIMMERLY
Abstract: The present invention relates to a compound coating for wood comprising an alkyd resin undercoat and a siliceous coating applied on top of this undercoat. The alkyd resin undercoat may be obtained from a coating material comprising a long oil alkyd resin and a mineral component. The siliceous coating to be applied on top of the undercoat is obtainable from a coating material comprising water glass or a mixture of silica sol and water glass having a ratio of 5 to 30 mol of SiO2 per mol of alkali oxide and a mineral component.