Abstract: There are described silanic phtalocyaninic dyes; composite pigments obtainable by grafting said dyes on an inorganic substrate, and, processes for preparing said dyes and said composite pigments.The dyes are of the following general formula: ##STR1## wherein: Pc is the residue of the phtalocyanine which may be metallized with a metal selected from the group consisting of Co, Ni and Cu; R.sub.1 is selected from the group consisting of H and alkaline metals; R.sub.2 and R.sub.3, equal or different, are selected from the group consisting of H, alkyls having up to 4 carbon atoms, cycloalkyls and aryls; R.sub.4 is selected from the group consisting of an alkyl with from C.sub.1 to C.sub.4 and phenyl; R.sub.5 is an alcoxyl C.sub.1 -C.sub.4 ; n is 3, 4 or 5; q is 0,1; p and m are such integers that when q is 0 p is 3 and m is 0, 1, 2 or 3, and when q is 1, p is 2 and m is 0, 1, 2; a and c are numbers in the range of 1 to 3 and b is a number in the range of 0 to 2, chosen in such a way that the sum a+b+c.ltoreq.

Abstract: There are described a new class of organic dyes containing silane groups, the composite pigments obtainable therefrom by associating them with a substrate (SiO.sub.2, TiO.sub.2, Al.sub.2 O.sub.3), and the processes for preparing same.The silane organic dyes have the formula (I): ##STR1## wherein all substituents are defined later. The silane dyes (I) are utilized per se for dyeing natural fibres, such as wool, and man-made fibres, such as the polyamide, polyester, polyacrylic fibres and the like, while the composite pigments prepared from said dyes by association with an inorganic substrate are employed in paints, air enamels and stoving enamels, in the pigmentation of plastics, in the inks, in the printing of textiles etc.