Patent ID: 11274191

Abstract:
A method for obtaining a photocatalytic polymer is provided. The method is carried out by mixing aluminium trihydroxide (ATH) and a photocatalytic particle in a polar solvent at a pH between 5 and 7 under stirring, adding silane or siloxane, stirring for a period of time of 100 min at a temperature between 30 and 50° C., extracting the solid phase being formed and drying for obtaining a photocatalytic additive, adding the photocatalytic additive to an acrylic or polyester resin and polymerizing. The method may be applied onto any type of polymer base, such as vinyl, fluoropolymers, polyamide, polycarbonates, polyethylene or epoxides. Another aspect of the invention is the photocatalytic additive being obtained. The resulting polymer shows catalytic homogeneity, operating the photocatalytic particles in all the surfaces of the material with the same activity.