SILICONE COMPOSITION FOR ANTI-MIST AND/OR ANTI-FOULING HARD COATING, BASED ON COLLOIDAL SILICA, CURABLE BY CATIONIC PROCESS

摘要

The invention concerns compositions crosslinkable by cationic process into hard coating, exhibiting moreover antifouling and/or anti-mist properties. Said composition, comprising non functionalized silica colloidal particles, further comprises: at least one crosslinkable and/or polymerisable silicone monomer, oligomer and/or polymer comprising: at least one unit of formula (I)<: >Z<1>(R<0>)aSiO(3-a)/2, wherein: a = 0, 1 or 2; R<0>, identical or different when a>1, represents an alkyl, cycloalkyl, aryl, vinyl, hydrogeno, alkoxy radical, preferably a C1-C6 lower alkyl<; >Z<1>, identical or different when the number of unit of formula (I) is greater than 1, is an organic substituent comprising at least one epoxy, and/or alkenylether and/or oxetane and/or dioxolane and/or carbonate reactive function, and preferably Z<1> being an organic substituent comprising an epoxy, and/or dioxolane reactive function; and a total number of silicon atoms per molecule not less than 2; and an efficient amount of at least one cationic initiator; optionally at least one organic solvent.