paint, varnish, pollutants, bioorganismen, oil, water and / or mud making coating

摘要

An organosiloxane chosen from (i) organosiloxane that carries triamino group(s), Si-C bonded fluoroalkyl group(s), hydroxyl and/or alkoxy group(s); (ii) a formulation of organosiloxane(s) as per (i); (iii) an alkylalkoxysilane; and/or (iv) a formulation of organosiloxane(s) which carries amino group(s), Si-C bonded 1-16C alkyl group(s), hydroxyl and/or alkoxy group(s), is applied to a substrate. A composition comprising an organosiloxane is first applied onto a substrate. The organosiloxane is selected from: (i) an organosiloxane which carries triamino group(s) of formula (NHx(CH2)aNHy(CH2)bNHz)- (I) (attached through N-bonded 1-4C alkylene group(s) to silicon atom(s)), Si-C bonded fluoroalkyl group(s) of formula F3C(CF2)r(CH2)s-, and hydroxyl and/or alkoxy group(s) (ii) a formulation comprising an organosiloxane or a mixture of organosiloxanes as per (i); (iii) an alkylalkoxysilane in which alkyl represents 1-16C alkyl radicals and alkoxy represents methoxy, ethoxy, propoxy or butoxy; and/or (iv) a formulation comprising organosiloxane(s) which carries amino group(s) of formula (NH2(CH2)a(NH)r(CH2)b(NH)s)- (II)(attached through N-bonded 1-4C alkylene group(s) to silicon atom(s)), Si-C bonded 1-16C alkyl group(s), and hydroxyl and/or alkoxy group(s). In (I): a and b = 1-6; x = 0-2; y = 0 or 1; z = 0-2; r = 0-18; s = 0 or 2; (x+y+z) = 4; In (II): a and b = 0-6; y = 0 or 1; s = 0 or 1, subject to the proviso that when a=0, then r=0 and when b=0, then s=0. Then, a coating of an organosiloxane as per (i) or an organosiloxane containing composition as per (ii), is applied to the treated substrate. Independent claims are also included for: (i) coating; (ii) production of an absorbent inorganic substrate repellent for ink, paint, pollutant, bioorganism, oil, water and/or dirt which involves forming the coating on inorganic substrate; and (iii) coated substrate.