Silane diimidic tetracarboxylic perylene dyes and composite...

C - Chemistry – Metallurgy – 09 – B

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C09B 57/08 (2006.01) C09B 5/62 (2006.01) C09B 67/22 (2006.01) C09B 69/00 (2006.01) C09D 11/02 (2006.01) D06P 1/00 (2006.01)

Patent

CA 1269379

ABSTRACT OF THE DISCLOSURE Silane diimidic tetracarboxylic perylene dyes, the com- posite pigments obtainable there-from by means of grafting onto an inorganic substrate, and the processes for preparing same. The dyes have the general formula: Image (I) in which R is the residue of a silane group of formula: Image (II) wherein n is 3, 4 or 5; q is 0 or 1; p is 2 or 3 and m is 0, 1, 2 or 3 with the proviso 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 or 2; R2 is an alkyl C1- C4 or a phenyl; R3 is an alkoxyl C1-C2; R1 may be the same as R or represent an alkyl C1-C6, a cyclohexyl, a phenyl which may be substituted by one or more alkyl or alkoxyl groups C1-C6 or a halogen. The dyes and the composite pigments obtained from said dyes are utilized in paints, air and stove enamels, in the pigmentation of plastic materials, and in printing inks.

466186

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