Antimicrobial aqueous dispersions, useful e.g. for treating medical equipment, are obtained by mixing aqueous dispersions of polymer and metal or metal compound

摘要

Preparation of an antimicrobial aqueous dispersion (A) involves mixing an aqueous dispersion of nanoparticles of antimicrobial metal(s) (or metal compound(s)) with an aqueous dispersion of a polymerization, polycondensation or polyaddition product. Independent claims are included for: (1) the preparation of a solid intermediate (B), by removing water from (A) (obtained as above), specifically to give a water content of at most 10 wt. %; (2) the preparation of an antimicrobial plastics article or coating, by subjecting (B) (obtained as above) to conditions causing at least partial coalescence; (3) (A) and (B), obtained (or obtainable) by the above methods (where (B) optionally also contains plastics particles having no antimicrobial action); and (4) plastics articles or coatings obtained (or obtainable) by the above methods.