Posselt's Textile Journal 7, 1909
By H. Hollenweger-Mariano.
Whilst the ciba colors represent new members of the indigo or thioindigo group, the cibanone colors are derivatives of anthraquinone. The dyestuffs of the former class are suitable for the dyeing of vegetable and animal fibres, as well as the calico printing, whereas the cibanone colors only enter into consideration for the production of fast shades in cotton dyeing.
The dyeings produced with the different products in the hydrosulphite vat are especially distinguished by their brilliant shades and excellent properties of fastness.
CIBA BLUE gives in cotton dyeing and calico printing pure blue shades, which are considerably brighter and much faster to washing, chemicking and light than those produced with indigo. In consequence of its greater affinity for the fibre, the darkest shades may be obtained by one dip.
Ciba blue may further be employed for the resist and discharge article as well as for yarn printing (chine). On account of its superior properties of fastness, the dye is also of great interest in the manufacture of woollen articles fast to wearing, such as military cloth, etc.
CIBA HELIOTROPE produces on the various fibres mauve shades of great fastness; especially for calico printing, the product is very interesting as a substitute for the well-known alizarine violet, and it even excels the latter in many respects.
To the same series of colors there also belongs a dyestuff in which we possess the first vat green fast to chlorine, and which differs from the green vat dyes already known inasmuch as same can also be fixed on animal fibres.
CIBA BORDEAUX, RED AND SCARLET, are three homogeneous vat dyes which may be used in the same manner as the other ciba colors, and which permit of producing in dyeing and printing a whole range of shades from winered to the brightest scarlet. The shades obtained by these products also possess unexcelled properties of fastness.
The products already on the market under the name of ciba violets have, on account of their exceedingly beautiful shades and excellent properties of fastness, as well as for their simple method of application, already been favorably introduced in the different branches of the dyeing and printing trade. As regards their application, the same instructions may be followed as those indicated for the other ciba colors.
CIBANONE YELLOW AND ORANGE are, on account of their remarkable fastness and brilliant shades, especially suitable for dyeing in combination with other vat colors. For instance, very bright and fast green shades on cotton may be obtained by mixing these two colors with ciba blue.
THE CIBANONE BROWNS are homogeneous products, and the fastest vat dyes to chemicking of all vat
browns known at the present time, and are further distinguished by their bright and bloomy shades.
The most interesting products of the cibanone series are the two CIBANONE BLACKS, which represent the first black vat dyes. In comparison with colors employed hitherto in cotton dyeing, such as aniline black, logwood, or sulphur black, the cibanone blacks possess a splendid fastness to chemicking, a property which will prove most advantageous and important for many branches of the textile industry.
Ciba and Cibanone colors may be mixed with each other in cotton dyeing, thus enabling the production of a most varied collection of shades possessing an unattained fastness.
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