ARTICLES, COMPOSITIONS AND PROCESS FOR CLEANING SURFACES BY USE OF A CATALYST AT THE SURFACE

摘要

The invention relates to a process for the treatment of a surface with a hygiene agent which comprises the steps of: a) providing at the surface a non-photochemical catalyst (such as a transition metal compound) which catalyses the formation of the hygiene agent from one or more precursors, whereby said catalyst becomes deposited at said surface, and, b) subsequently treating the surface with a treatment agent (such as a solution of hydrogen peroxide) comprising the or each hygiene agent precursor, such that the hygiene agent is generated at said surface. The invention also provides a process which comprises the step of treating the surface which has a non-photochemical catalyst bound thereto with a treatment agent comprising at least one hygiene agent precursor which forms said hygiene agent in the presence of said catalyst and, a process for the manufacture of an article which includes the step of incorporating therein, at the time of manufacture, a non-photochemical catalyst capable of transforming at least one hygiene agent precursor into a hygiene agent.