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    • 6. 发明授权
    • Composite pigments and process for their preparation
    • 复合颜料及其制备方法
    • US4486237A
    • 1984-12-04
    • US468121
    • 1983-02-22
    • Camillo PaffoniLuigi BalducciGiorgio BottaccioMarcello Pieroni
    • Camillo PaffoniLuigi BalducciGiorgio BottaccioMarcello Pieroni
    • C09B25/00C09B29/00C09B29/01C09B29/15C09B29/36C09B63/00C09B67/08C09B67/22C09C1/00C09C1/40C04B31/40
    • C09B63/00C09B25/00C09B29/00C09B29/0007C09B29/103C09B29/36C09B67/0033C09C1/0084C01P2004/80C01P2006/12C01P2006/60
    • 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.
    • 已经制备了含有有机部分和无机部分的新型复合颜料。 这些颜料由无机二元二氧化钛/铝水合物成分组成,其含量为70%至95%(重量),剩余有机成分为5%至30%(重量),由选自 该组由偶氮和喹啉酮化合物组成,其结构含有至少一种羧酸和/或磺酸,基本上盐化的酸功能。 根据酸性有机染料与氢氧化铝(水合铝)一起的共沉淀法,在碱性控制的pH条件下,通过酸性有机染料的水溶液和/ 在铝酸钠存在下,在二氧化钛的存在下,在40℃至约80℃,然后通过用碱土金属盐(Ca,Mg,Ba,Sr )或Mn,Zn盐。 上述颜料不溶于水和普通的有机溶剂。 此外,它们具有良好的染色力,在热下具有优异的稳定性,良好的耐光牢度,良好的碱和酸牢度,在塑料材料中的迁移以及在炉子上过度的稳定性等。最后,它们可以 获得不同程度的覆盖力。 因此,通过常规应用方法,颜料可以在上漆产品,空气干燥和炉烘烤的搪瓷,塑料材料着色,油墨和织物的印刷等方面得到优先应用。