Polymer particles having select functional or absorbing groups are provided. The polymer particles are useful for preparing organic-inorganic composite particles that are suitable for providing dried coatings with improved hiding. Aqueous compositions containing these composite particles are also provided. The select absorbing groups include phosphorus acid groups, phosphorus acid full-ester groups, polyacid sidechain groups, and salts thereof. The select functional groups are capable of forming covalently bonded composite particles. The composite particles formed from the multistage polymer particles having the select functional or absorbing groups are useful for preparing dried coatings with a combination of improved hiding, increased gloss, and good film properties.
本发明提供了具有精选官能团或吸收基团的聚合物颗粒。这些聚合物微粒可用于制备有机-无机复合微粒,适用于提供具有更好遮盖力的干燥涂层。还提供了含有这些复合微粒的
水性组合物。精选吸收基团包括
磷酸基团、
磷酸全酯基团、多酸侧链基团及其盐类。精选官能团能够形成共价键合的复合微粒。由具有精选官能团或吸收基团的多级聚合物颗粒形成的复合颗粒可用于制备具有更好的遮盖力、更高的光泽度和良好的涂膜性能的干燥涂料。