Silane diimidic tetracarboxylic perylene dyes

US4613667A · kind A · utility

Assignee

• Montedison S.p.A. · IT

Inventors

• Antonio Marraccini · Novara, IT
• Filippo M. Carlini · Novara, IT
• Giorgio Bottaccio · Novara, IT
• Antonio Pasquale · Novara, IT
• Giorgio Maranzana · Novara, IT

Key dates

• Filing date: Oct 22, 1984
• Grant date: Sep 23, 1986
• Expiry date: Oct 22, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B69/008
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Silane diimidic tetracarboxylic perylene dyes, the composite pigments obtainable therefrom by means of grafting onto an inorganic substrate, and the processes for preparing same. The dyes have the general formula: ##STR1## in which R is the residue of a silane group of formula: ##STR2## in which n is 3, 4 or 5; q is 0 or 1, p and m are such integers than 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; R.sub.2 is an alkyl C.sub.1 -C.sub.4 or a phenyl; R.sub.3 is an alkoxyl C.sub.1 -C.sub.2 ; R.sub.1 may be the same as R or represent an alkyl C.sub.1 -C.sub.6, a cycloalkyl, a phenyl optionally substituted by one or more alkyl or alkoxyl groups C.sub.1 -C.sub.6 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.