摘要:
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.
摘要翻译:描述了一类含有硅烷基团的有机染料,其可通过将其与基底(SiO 2,TiO 2,Al 2 O 3)缔合而获得的复合颜料及其制备方法。 硅烷有机染料具有式(I):其中所有取代基在后面定义。 硅烷染料(I)本身用于染色天然纤维,如羊毛,人造纤维,如聚酰胺,聚酯,聚丙烯酸纤维等,而由所述染料制备的复合颜料与 无机基材用于油漆,空气搪瓷和炉搪瓷,塑料色素沉着,油墨中,纺织品印刷等。
摘要:
Novel composite pigments containing both organic and inorganic portions have been produced.These pigments consist of an inorganic binary titanium dioxide/aluminum hydrate component, in a percent quantity comprised between 70% and 95% by weight, the remaining organic component amounting to between 5% and 30% by weight, consisting of an organic dye selected from the group consisting of azoic and quinophtalonic compounds, containing in their structure at least one carboxylic and/or sulphonic, substantially salified, acid function.The pigments are obtained according to a co-precipitation process, under substantially alkaline controlled pH conditions, of the acid organic dye together with the aluminum hydroxide (hydrated aluminum), by acidification of a solution and/or an aqueous dispersion of the acid organic dye in sodium aluminate, in the presence of titanium dioxide, at from 40.degree. C. to about 80.degree. C., and by a subsequent lacquering by treatment with an aqueous solution of an alkaline-earth metal salt (Ca, Mg, Ba, Sr) or of a Mn, Zn salt.The above-mentioned pigments are insoluble in water and in common organic solvents. They possess, moreover, a good dyeing power, an excellent stability under heat, a good fastness to light, a good fastness to bases and acids, to migration in plastic materials and stability to over varnishing in the stove, etc. Lastly, they may be obtained with different degrees of covering power.Thus, the pigments find a preferential application in varnishing products, air-drying and stove-baked enamels, in the pigmentation of plastic materials, in inks and in the beprinting of fabrics, etc., by means of conventional applicational methods.