METHOD OF TREATING A SUBSTRATE WITH A MULTIPLICITY OF SOLID PARTICLES

摘要

A method of treating a substrate comprising the steps: i. agitating a treatment composition comprising a liquid medium, the substrate and a multiplicity of solid particles comprising biodegradable polyester; ii. optionally separating the solid particles comprising biodegradable polyester from the substrate; iii. initiating the degradation of the solid particles; wherein said solid particles have a size of from 1mm to 100mm.