Patent ID: 6465409
Filing Date: 2002-10-15
Classification: A01N

Abstract:
A process for disinfecting a hard surface by controlled release of at least one water-soluble or water-dispersible biocidal agent, comprising the steps ofapplying an aqueous biocidal system onto a hard surface, drying the applied aqueous biocidal system, and then contacting the dried biocidal system with an aqueous medium, such that the biocidal agent is released, said aqueous biocidal system comprising at least one water-soluble or water-dispersible biocidal agent and at least one polyorganosiloxane containing water-soluble or water-dispersible polyether functions, of formula (I) R1R2R3SiO(R4R5SiO)p(R6QSiO)qSiR3R2R1â€ƒâ€ƒ(I) â€ƒwherein the symbols R1, R2, R4, R5 and R6, which are identical or different, represent a phenyl or a C1 to C6 alkyl radical, the symbols R3, which are identical or different, represent a phenyl, a C1 to C6 alkyl radical, or the symbol Q, the symbol Q represents a polyoxyalkylene ether residue of formula: â€”Râ€”Oâ€”(Râ€²O)nRâ€³wherein: R represents a linear C3 to C15, alkylene group, or a branched C4 to C15 alkylene group, the unit (Râ€²O)n represents a poly(ethylenoxy) or poly(propylenoxy) group, n is an average value ranging from 5 to 200, and Râ€³ represents H or a C1 to C6 alkyl group, p is an average value ranging from 10 to 200, and q is a value q1 equal to 0, R3 in this case representing the symbol Q, or an average value q2 ranging from 1 to 100, irrespective of R3, and which interact with said biocidal agent.