The invention discloses a three-dimensional cage-like hyperbranched monomer and preparation method and application thereof. The three-dimensional cage-like hyperbranched monomer has the structural formula I:
wherein in the structural formula I: X is any one of —O, —S, —NH; y is any integer from 2 to 8; R is —H or —CH3. The beneficial effect of the technical scheme proposed in the present invention is: by introducing easily polymerizable olefin groups, the carboxyl group and amide group are combined in the three-dimensional cage-like hyperbranched monomer to make the water solubility good, and it can be copolymerized with many other monomers to obtain the three-dimensional cage-like hyperbranched polymer; when used as an additive for wellbore working fluids, due to the hyperbranched structure of the polymer, it has good salt and temperature resistance, and also has viscosity increasing, filtration loss, and flocculation properties; meanwhile, the synthesis method is simple and the cost is low.
本发明公开了一种三维笼状超支化单体及其制备方法和应用。三维笼状超支化单体的结构式为 I:
其中结构式 I:X为-O、-S、-NH中的任意一种;y为2至8中的任意整数;R为-H或-
CH3。本发明提出的技术方案的有益效果是通过引入易聚合的烯烃基团,在三维笼状超支化单体中结合了羧基和酰胺基,使其
水溶性好,可与多种单体共聚得到三维笼状超支化聚合物;用作井筒工作液添加剂时,由于该聚合物的超支化结构,使其具有良好的耐盐性和耐温性,还具有增粘、降滤、絮凝等性能,同时合成方法简单,成本低。