Process and aqueous formulation for the impregnation of non-living-materials imparting a protective activity against pests

A process for manufacturing a pesticide treated non-living material comprising the step of impregnating the non-living material with an aqueous formulation free of organic solvents which comprises one or more pesticides (A), a polymeric binder (B) comprising one or more fluorinated acrylic copolymer having a fluorine content, based on the solid content of the polymeric binder, of at least 10% by weight, and water as the sole solvent component (C),

• wherein the insecticide is selected from the group consisting of alphacypermethrin, cyfluthrin, deltamethrin, ethofenprox, bifenthrine, carbosulphane, chlorfenapyr and fipronil, and wherein the fluorinated acrylic copolymer is prepared by the polymerization of a perfluoroalkyl acrylate monomer of the formula (I) and a co-monomer, which is an acrylate monomer of formula (II)
• wherein R is hydrogen or a lower alkyl of 1 to 4 carbon atoms, W is an alkylene of 1 to 6 carbon atoms, R′ is a perfluoroalkyl of 2 to 20 carbon atoms and R″ is lower alkyl of 1 to 6 carbon atoms, hydroxyalkylene of 2 to 4 carbon atoms or the group —(CH2)n—NH—R″′ in which R″′ is lower alkyl of 1 to 6 carbon atoms or cycloalkyl and n is an integer of 2 to 4.

An aqueous formulation free of organic solvents, comprising one or more pesticides (A), a polymeric binder (B) comprising one or more fluorinated acrylic copolymer having a fluorine content, based on the solid content of the polymeric binder, of at least 10% by weight, and water as the sole solvent component (C),

• wherein the insecticide is selected from the group consisting of alphacypermethrin, cyfluthrin, deltamethrin, ethofenprox, bifenthrine, carbosulphane, chlorfenapyr and fipronil,
• and wherein the fluorinated acrylic copolymer is prepared by the polymerization of a perfluoroalkyl acrylate monomer of the formula (I) and a co-monomer, which is an acrylate monomer of formula (II)
• wherein R is hydrogen or a lower alkyl of 1 to 4 carbon atoms, W is an alkylene of 1 to 6 carbon atoms, R′ is a perfluoroalkyl of 2 to 20 carbon atoms and R″ is lower alkyl of 1 to 6 carbon atoms, hydroxyalkylene of 2 to 4 carbon atoms or the group —(CH2)n—NH—R′″ in which R′″ is lower alkyl of 1 to 6 carbon atoms or cycloalkyl and n is an integer of 2 to 4.