Water-resistant and anti-fouling additive for water-based wood paint and preparation method of water-resistant and anti-fouling additive

• Main Authors: QIU HAO, LU JUNNAN, CHEN XIAOYONG, YI XIANCHUN, ZHANG HUI, CHU KAIHUA
• Format: Patent
• Language: Chinese; English
• Published: 17.11.2023
• 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 relates to the technical field of organic silicon functional emulsion preparation, in particular to high-solid-content alkoxy-containing organic silicon emulsion and a preparation method thereof, the high-solid-content alkoxy-containing organic silicon emulsion is applied to water-borne wood paint and plays a role in water resistance and stain resistance, and the high-solid-content alkoxy-containing organic silicon emulsion is prepared from the following raw materials: 50-60 parts of organic silicon oligomer, 2-5 parts of surfactant, 3-6 parts of cosolvent, 0.1-0.5 part of pH regulator and 40-50 parts of solvent; and the organic silicon oligomer is small molecular resin obtained by partial hydrolysis-condensation of alkyl trimethoxy silane. The theoretical solid content of the emulsion prepared by the method is at least 55%; the viscosity is 40-60 mPa.s/25 DEG C; the emulsion is good and stable in waterproof effect and can be placed for more than one year at normal temperature; the emulsion can