Patent ID: 8512863
Filing Date: 2013-08-20
Classification: B01J,Y10T

Abstract:
1. A process for the treatment of a hard surface to deliver to the surface antifouling, water sheeting, anti-soiling, anti-adhesion, adhesion, and/or anti-deposition properties, comprising the steps of: a) coating on the surface a film of a composition consisting essentially of an aqueous dispersion or solution of coacervates having a core-shell structure, a1) preparing an aqueous colloidal dispersion of said inorganic particles whose concentration Ca by weight is equal to or less than about 2% and more than 0.001%, and setting its pH at a value of pHa, a2) preparing a solution of the copolymer whose concentration Cb by weight is equal to or less than about 2% and more than 0.001% with:  and setting its pH at a value of pHb with:  with the further proviso that the stoichiometric ratio Z of chargeable groups present in the solution is between 0.80 and 1.2, with:  wherein [S] and [P] are the molar concentrations of the particle and the copolymer and s and p being the number of charge per particle and per copolymer, and a3) mixing the dispersion of a1) and the solution of a2) to obtain the dispersion or solution of coacervates; b) allowing the water of the dispersion on the hard surface to evaporate to deposit the inorganic particles and copolymer on the surface and adsorb on the surface to deliver to the surface the antifouling, water sheeting, anti-soiling, anti-adhesion, adhesion, and/or anti-deposition properties,