申请人:DiFrancesco Albert Gary
公开号:US20110293683A1
公开(公告)日:2011-12-01
A method for extending the shelf-life of an aqueous dispersion comprising silver halide particles and gelatin, comprises adding adenine to the aqueous dispersion in an amount effective to improve the redispersibility and the colloidal stability thereafter of the aqueous dispersion following extended storage. The extended storage time consisted of 5 days at a temperature of about 40° C. The gelatin amount ranged from about 4 weight % to less than about 1 weight %. The invention also relates to a method of coating fibers, fabrics or substrates with the improved composition to provide antimicrobial properties, and to the coated articles.