Process to prepare self-binding pigment particles implementing acrylic comb copolymers with hydrophobic groups as coupling agents, self binding pigment particles and uses thereof
申请人:Omya Development AG
公开号:EP2208761A1
公开(公告)日:2010-07-21
The present invention relates to a process to prepare self-binding pigment particles comprising at least one step a) of grinding one or more binders and one or more mineral materials in an aqueous environment to obtain a suspension, characterised in that, prior to and/or during step a), a copolymer is added in the form of an aqueous solution, said copolymer resulting from the polymerisation of:
2.1)
at least one anionic monomer that is an alkcne;
2.2)
at least one oxyalkylated monomer that is an alkene, wherein the oxyalkyl group has a terminal hydrophobic alkyl, aryl, alkyl aryl or aryl alkyl group having 10 to 32 carbon atoms;
2.3)
optionally, at least one other monomer that is an acrylic ester, a preferred acrylic ester being ethyl acrylate, and/or an unsaturated amide, a preferred unsaturated amide being acrylamide,
as well as to the products obtained by this process, and uses of these products.
本发明涉及一种制备自结合颜料颗粒的工艺,该工艺至少包括一个步骤a),即在水性环境中研磨一种或多种粘合剂和一种或多种矿物材料以获得悬浮液,其特征在于,在步骤a)之前和/或期间,以水溶液的形式加入共聚物,所述共聚物由以下物质聚合而成:
2.1)
至少一种烷烃阴离子单体;
2.2)
至少一种烯烃氧烷基化单体,其中氧烷基具有 10 至 32 个碳原子的末端疏水烷基、芳基、芳基烷基或芳基烷基;
2.3)
2.3) 可选地,至少还有一种单体是丙烯酸酯(优选的丙烯酸酯是丙烯酸乙酯)和/或不饱和酰胺(优选的不饱和酰胺是丙烯酰胺)、
以及通过该工艺获得的产品和这些产品的用途。