The present invention provides a co-polymer that is capable of forming sterically stabilised dispersions in aqueous media, comprising steric stabilising units having water soluble poly(oxyalkylene) chains, structural units and amine group containing units, the amine group containing units comprising tertiary amine groups or an acid salt thereof or quaternary ammonium salt groups; the amount of amine group-containing units being such that the co-polymer contains from 0.025 to 0.5 milli-equivalents of amine per gram of co-polymer.
The co-polymers are useful as film-formers in their own right and also as steric stabilisers for other film-forming polymers in non-ionic electrodepositable coatings.
本发明提供了一种能够在
水介质中形成立体稳定分散体的共聚物,该共聚物由具有
水溶性聚(氧烷基)链的立体稳定单元、结构单元和含胺基团单元组成,含胺基团单元包括叔胺基团或其酸盐或季
铵盐基团;含胺基团单元的数量为每克共聚物含有 0.025 至 0.5 毫当量的胺。
共聚物本身可用作成膜剂,也可用作非离子电泳涂料中其他成膜聚合物的立体稳定剂。