A method of forming latex composite polymer particles produces hydrolysis resistant, composite polymer particles that can be used in aqueous latex compositions. Each of the latex composite polymer particles includes a first phase comprising a vinyl ester oligomer or polymer; optionally, an intermediate phase; and at least one second phase comprising an acrylic oligomer or polymer, a styrene oligomer or polymer, an acrylic-styrene copolymer, or mixtures thereof. The second phase and/or the intermediate phase at least partially encapsulates the first phase. The intermediate and second phases are more hydrophobic than the first phase. Optionally, the first phase, the second phase, and/or the intermediate phase may further comprise a cross-linking agent.
一种乳胶复合聚合物颗粒的成型方法可生产出可用于
水性乳胶组合物的抗
水解复合聚合物颗粒。每种胶乳复合聚合物颗粒都包括由
乙烯基酯低聚物或聚合物组成的第一相;可选的中间相;以及至少一种由
丙烯酸低聚物或聚合物、
苯乙烯低聚物或聚合物、
丙烯酸-
苯乙烯共聚物或其混合物组成的第二相。第二相和/或中间相至少部分封装了第一相。中间相和第二相比第一相更疏
水。可选地,第一相、第二相和/或中间相可进一步包含
交联剂。