| 摘要 |
<p>The invention provides a cleaning formulation comprising a multiplicity of solid cleaning particles, wherein the solid cleaning particles comprise polymeric particles and at least one cleaning agent, wherein the at least one cleaning agent is immobilised on the surface of the polymeric particles. Typically the at least one cleaning agent is immobilised on the surface of the polymeric particles by means of chemical bonds, typically ionic bonds, hydrogen bonds, covalent bonds, polar bonds, or bonds formed by virtue of unequal charge distributions between polymeric particles and immobilised materials. The invention also provides a method for the cleaning of a substrate, the method comprising the treatment of the substrate with a formulation according to the invention, and a method for the preparation of the cleaning formulation of the invention which comprises treating a multiplicity of polymeric particles with at least one cleaning agent.</p> |
