AQUEOUS DISPERSION OF POLYMER PARTICLES WITH ACORN MORPHOLOGY

• Main Authors: BROWNELL, ARNOLD S, BOHLING, JAMES C, SWARTZ, ANDREW
• Format: Patent
• Language: Chinese; English
• Published: 29.06.2018
• 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 BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED 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

Abstract The present invention relates to a composition comprising 1) an aqueous dispersion of polymer particles having a core-shell morphology wherein the core protuberates from the shell and comprises less than 0.09 structural units of a phosphorus acid monomer, based on the weight of the core; and 2) pigment particles with a refractive index in the range of from 2.0 and 3.0, wherein the pigmentvolume concentration of the pigment particles is at least 11. The composition of the present invention is useful for improving block resistance in coatings applications. 本发明涉及种组合物，其包括：1)具有核-壳形态的聚合物粒子的水性分散液，其中所述核心从所述壳层凸出，且包括以所述核心的重量计小于0.09的磷酸单体结构单元；以及2)颜料粒子，其具有在2.0与3.0范围内的折射率，其中所述颜料粒子的颜料体积浓度为至少11。本发明的组合物适用于改进涂料应用中的抗粘连性。