Process for surface treatment of cellulosic, metallic, vitreous materials, or cements, marbles, granites and the like
AssigneeAusimont S.p.A.
InventorsLaura Montagna, Mauro Scapin, Rosaldo Picozzi
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Abstract
Phosphoric monoesters of formula: ##STR1## wherein: L is a divalent organic group; m=1; Y is --F or --CF.sub.3 ; Z.sup.+ is selected from: H.sup.+, M.sup.+ wherein M is an alkali metal, N(R).sub.4.sup.+ wherein the R groups, equal or different from each other, are H or C.sub.1 -C.sub.6 alkyls; R.sub.f is a poly-perfluoroalkyleneoxide chain; are used for surface treatment of cellulosic (for instance wood or paper), metallic (either ferrous or non-ferrous), vitreous (for instance glass or vitrified ceramics) materials, or of cements, marbles, granites, and the like.
Claims13
Process for surface treatment of a material selected from the group consisting of cellulosic materials, metallic materials, vitreous materials, cements, marbles, and granites, which comprises applying onto a surface of said material a phosphoric monoester having the formula:
- ##STR5## wherein:
- R.sub.f is a polyperfluoro-alkyleneoxide chain, X is --F or --CF.sub.3, L is a divalent organic group, m-1, and A.sup.+ is selected from the group consisting of H.sup.+, M.sup.+ where M is an alkali metal, and N(R).sub.4.sup.+ where the R groups, equal or different from each other, are H or C.sub.1 -C.sub.4 alkyls.
Process according to any one of the previous claims, wherein the L group is selected from the group consisting of:
- (a) --CH.sub.2 --(OCH.sub.2 CH.sub.2).sub.n --, wherein n is an integer of from 0 to 3;
- and
- (b) --CO--NR'--(CH.sub.2).sub.q --, wherein R' is H or a C.sub.1 -C.sub.4 alkyl;
- q is an integer from 1 to 4.
Dependencies are inferred from the claim text.