Double-component water-based matte coating varnish and preparation method thereof

• Main Authors: GONG LIXIANG, ZHAO YAWEN, LIU DONGHUA, ZHANG SHUPING
• Format: Patent
• Language: English
• Published: 06.05.2015
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention discloses double-component water-based matte coating varnish and a preparation method thereof. The varnish comprises a component A and a component B, wherein the component A consists of the following components in percentage by mass: 60-90% of acrylic emulsion, 0.1-3.0% of a thickening agent, 0.1-2.0% of a defoaming agent, 3.0-8.0% of a coalescing agent, 0.5-6.0% of an antifreezing agent and 0.1-36% of water; and the component B consists of the following components in percentage by mass: 0.1-10.0% of a flocculating agent and 90.0-99.9% of water. According to the varnish, the component B contains the flocculating agent, so that the varnish film flatness is reduced and the glossiness is reduced as flocculation can be generated in an emulsion film-forming process of spraying the components A and B, the matte effect can be realized by not adding matting powder, and adverse effects caused by adding the matting powder are avoided; and especially, the component B containing the flocculating agent is separated from the component A containing the emulsion, the component B and the component A are simultaneously sprayed during use, so that a problem that the product storage stability is reduced when the component A and the component B are mixed is avoided.