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发明公开
CN106715491A 用于柔性水泥质防水材料的包含(甲基)丙烯酸羟烷基酯官能单体单元的(甲基)丙烯酸酯共聚物的分散体 无效 - 驳回

用于柔性水泥质防水材料的包含(甲基)丙烯酸羟烷基酯官能单体单元的(甲基)丙烯酸酯共聚物的分散体
摘要：
本发明涉及包含(甲基)丙烯酸羟烷基酯共聚单体单元的(甲基)丙烯酸酯共聚物的分散体，其由包含以下物质或由以下物质组成的单体的聚合获得，基于总的单体重量计：(a)25至45重量％的至少一种单乙烯基芳族单体和/或甲基丙烯酸甲酯；(b)50至70重量％的至少一种(甲基)丙烯酸C4‑8烷基酯；(c)2至7重量％的至少一种(甲基)丙烯酸羟烷基酯；(d)0至1重量％的至少一种α，β‑单烯键式不饱和C3‑6单羧酸或二羧酸；和(e)0至0.65重量％的(甲基)丙烯酰胺、N‑羟烷基(甲基)丙烯酰胺和/或2‑丙烯酰胺基‑2‑甲基丙烷磺酸，以及其用于柔性水泥质防水材料的用途。本发明还涉及通过将所述分散体干燥而获得的包含(甲基)丙烯酸羟烷基酯共聚单体单元的(甲基)丙烯酸酯共聚物的粉末，以及其用于柔性水泥质防水材料的用途。
摘要（英）：

The present invention relates to a dispersion of (meth)acrylate copolymer containing a hydroxyalkyl (meth)acrylate comonomer unit, which is obtained from polymerization of monomers comprising or consisting of, based on the total monomer weight, (a) from 25 to 45 % by weight of at least one monovinyl aromatic monomer and/or methyl methacrylate; (b) from 50 to 70% by weight of at least one C4-8 alkyl (meth)acrylate; (c) from 2 to 7 % by weight of at least one hydroxyalkyl (meth)acrylate; (d) from 0 to 1 % by weight of at least one alpha,beta-monoethylenically unsaturated C3-6 monocarboxylic or dicarboxylic acid; and (e) from 0 to 0.65 % by weight of (meth)acrylamide, N-hydroxyalkyl (meth)acrylamide, and/or 2-acrylamido-2-methylpropane sulfonic acid, and use thereof for flexible cementitious waterproofing materials. The present invention also relates to powder of (meth)acrylate copolymer containing a hydroxyalkyl (meth)acrylate comonomer unit obtained by drying the dispersion, and use thereof for flexible cementitious waterproofing materials.

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