To provide a core-shell type polymeric particle which exhibits good dispersibility in an aqueous medium and has excellent flame retardance.
A core-shell type polymeric particle, comprising a shell including a copolymer having a repeating unit (a) derived from vinyl phosphonic acid or a vinyl phosphonic acid ester and a repeating unit (b) represented by the following formula (α), and a core including a hydrophobic polymer (c).
[In the formula (α),
Ra represents a hydrogen atom or a methyl group,
Rb represents a single bond or a carbonyl group,
Ring Q1 represents a substituted or unsubstituted 4 to 10 membered nitrogen-containing heterocycle.]
提供一种芯壳型聚合物颗粒,它在
水介质中具有良好的分散性和优异的阻燃性。
一种芯壳型聚合物颗粒,包括一个外壳(外壳中包含一种共聚物,其重复单元(a)由
乙烯基膦酸或
乙烯基膦酸酯衍生而来,重复单元(b)由下式(α)表示)和一个芯(芯中包含一种疏
水性聚合物)(c))。
式(α)中
Ra 代表氢原子或甲基、
Rb 代表单键或羰基、
环 Q1 代表取代或未取代的 4 至 10 位含氮杂环]。