Treatment for substrates

一种水分散性颗粒，其中该物质包括：(i)具有平均重复单元(I)的一种或多种聚合沉积物质：其中聚合物的至少一个或多个R基团独立地选自H，可水解基团或连接基团，其中当R是可水解基团时，取代度是0到3，且当R是连接基团时，取代度是0.01到3；(ii)与沉积增强部分相连的有益试剂；其特征在于水分散性颗粒具有的颗粒尺寸为20到5000纳米。 A water-dispersible particle wherein the material comprises(i) one or more polymeric deposition materials having an average repeat unit (I):wherein at least one or more R groups of the polymer are independently selected from H, a hydrolysable group or a linker group in which when R is a hydrolysable group the degree of substitution is 0 to 3 and when R is a linker group the degree of substitution is 0.01 to 3;(ii) a benefit agent attached to the deposition enhancing part;characterised in that the water-dispersible particle has a particle size from 20 to 5,000 nm.