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    • 6. 发明公开
    • 다층구조를 지닌 백색안료 및 그 제조방법
    • 具有多级结构的白色染料及其制备方法
    • KR1020070093649A
    • 2007-09-19
    • KR1020060023737
    • 2006-03-14
    • 주식회사 케이씨씨
    • 김종윤권오원홍승민
    • C09B67/00C09D1/00
    • C09B67/00C09C1/0096C09C1/043C09C1/06C09C1/3607C09D1/00
    • Multi-layered polymer particles are provided to ensure improved hiding power and be useful as an opacity agent in paints, paper coatings, and molding compositions. A multi-layered polymer particle comprises a core and at least one hard shell layer formed on the core, wherein the core consists of an inorganic pigment core particle having a refractive index of 1.8 or more, and an alkali-swellable polymer that covers the core particle and is able to form pores after drying. The core particle is at least one inorganic pigment selected from titanium dioxide, zinc oxide, lithopone, or antimony oxide. The alkali-swellable polymer is a copolymer of a monomer mixture consisting of 50-80wt% of at least one ethylenically unsaturated monomer and 20-50wt% of at least one hydrophilic acid monomer.
    • 提供多层聚合物颗粒以确保改善的遮盖力并且可用作涂料,纸涂料和模塑组合物中的不透明剂。 多层聚合物颗粒包括芯和在芯上形成的至少一个硬壳层,其中芯由折射率为1.8以上的无机颜料芯颗粒和覆盖芯的碱溶胀性聚合物组成 颗粒,干燥后能形成孔隙。 核心颗粒是选自二氧化钛,氧化锌,锌钡白或氧化锑中的至少一种无机颜料。 碱溶胀性聚合物是由50-80重量%的至少一种烯属不饱和单体和20-50重量%的至少一种亲水酸单体组成的单体混合物的共聚物。