Preparation method of high-performance UV (Ultraviolet)-curable hyperbranched waterborne fluorine-containing polyurethane resin

• Main Authors: WANG WEI, YAO BOLONG, XU YINGCONG
• Format: Patent
• Language: Chinese; English
• Published: 06.04.2018
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; POLISHES; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF MATERIALS THEREFOR; WOODSTAINS

The invention aims at providing water-resisting, weather-resisting and solvent-resisting UV (Ultraviolet)-curable hyperbranched waterborne fluorine-containing polyurethane emulsion which is prepared by modifying hyperbranched fluorine-containing polyatomic alcohol, and a preparation method thereof. Waterborne polyurethane is modified through the hyperbranched fluorine-containing polyatomic alcoholto obtain hyperbranched fluorine-containing polyurethane; a carbon-fluorine chain segment in a molecular structure is easily transferred to the surface of a coating film in a film forming process andis enriched on the surface. Therefore, good adhesive force, rigidity, curing speed and the like of waterborne polyurethane resin can be ensured; meanwhile, the modified polyurethane coating film hasgood water resistance, solvent resistance and thermal stability. 本发明的目的在于提供种利用超支化含氟多元醇进行改性制备耐水、耐候、耐溶剂性可UV固化水性聚氨酯乳液及其制备方法。本发明的水性聚氨酯经超支化含氟多元醇进行改性得到的超支化水性含氟聚氨酯，分子结构中的碳氟链段在成膜过程中易于向涂膜表面迁移，富集于表面。这样既能在保证水性聚氨酯树脂优良的附着力、硬度、固化速率等的同时又赋予改性聚