申请人:Quarzwerke GmbH
公开号:US10759934B2
公开(公告)日:2020-09-01
Polymer particles having a mean primary particle diameter d50 between 50 nm and 10 pm based on the total weight, containing: A. 10 to 100% by weight of a polymer phase A, obtainable by free-radical copolymerization of an oil-in-water miniemulsion having a monomer mixture as oil phase, containing i) 30 to 99.9% by weight of one or more mono-ethylenically unsaturated monomers II having at least one C12-C48-n-alkyl side chain, ii) 0 to 60% by weight of one or more mono-ethylenically unsaturated monomers II having at least one C1-C11-n-alkyl and/or one C3-C48-i-alkyl side chain, iii) 0.1 to 20% by weight of one or more monomers III having at least two non-conjugated ethylenic double bonds, iv) 0 to 69.9% by weight of one or more (hetero)aromatic, mono-ethylenically unsaturated monomers IV, v) 0 to 40% by weight of one or more other mono-ethylenically unsaturated monomers V; and B. 0 to 90% by weight of a polymer phase B, obtainable by subsequent free-radical graft copolymerization, in the presence of the polymer phase A obtained after stage A), of a monomer mixture containing i) 0 to 100% by weight of one or more monomers VI from the group of C1-C10-alkyl(meth)acrylates, ii) 0 to 100% by weight of one or more (hetero)aromatic, mono-ethylenically unsaturated monomers VII, iii) 0 to 50% by weight of one or more other mono-ethylenically unsaturated monomers VIII, where the percentages by weight of the monomer mixtures used in the respective stages add up to 100% by weight.
以总重量为基准,平均主颗粒直径 d50 在 50 纳米至 10 微米之间的聚合物颗粒,含有:A. 10-100%(按重量计)的聚合物相 A,可通过自由基共聚具有单体混合物作为油相的水包油微型乳液而获得,其中包含 i) 30-99.9%(按重量计)的一种或多种具有至少一个 C12-C48-n 烷基侧链的单乙烯基不饱和单体 II,ii) 0-60%(按重量计)的一种或多种具有至少一个 C1-C11-n 烷基和/或一个 C3-C48i- 烷基侧链的单乙烯基不饱和单体 II,iii) 0.0 至 69.9%(重量百分比)的一种或多种(杂)芳香族单乙烯不饱和单体 IV,v) 0 至 40%(重量百分比)的一种或多种其它单乙烯不饱和单体 V;以及 B.0 至 90%(以重量计)的聚合物相 B,可在阶段 A)后得到的聚合物相 A 的存在下,通过随后的自由基接枝共聚得到,聚合物相 B 的单体混合物含有 i) 0 至 100%(以重量计)一种或多种 C1-C10 烷基(甲基)丙烯酸酯类单体 VI、0-100%(按重量计)的一种或多种(杂)芳香族单乙烯不饱和单体 VII, iii) 0-50%(按重量计)的一种或多种其他单乙烯不饱和单体 VIII,其中各阶段所用单体混合物的重量百分比相加为 100%(按重量计)。