US134076A - Improvement in dyeing fabrics with nafhtytamine colors - Google Patents

Improvement in dyeing fabrics with nafhtytamine colors Download PDF

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US134076A
US134076A US134076DA US134076A US 134076 A US134076 A US 134076A US 134076D A US134076D A US 134076DA US 134076 A US134076 A US 134076A
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colors
improvement
nafhtytamine
violet
dyeing fabrics
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06PDYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS, OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/32General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using oxidation dyes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S8/00Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
    • Y10S8/916Natural fiber dyeing
    • Y10S8/917Wool or silk

Description

STATES? PATENT Orrron.

'FRAxoois LAMv, FILS, on DEvItLn-IlE's-nonmv, Financial IMPROVEMENT l N D VEINGFABRI CS WITH NAlHTYtAMINE COLORS.

Specification forming part of Letters Patent No. 134,076, dated December 17, 1872.

To all whom it/may concern Be it known that I, FRANgors LAMY, Fils, of Deville-les-Rouen, in the Republic of France, do hereby declare the nature of my said invention for Improvements in the Production of a price-garnet color or colors from Naphtylamine and its derivatives, of which the following is a description:

My invention has for its object the production, at a less cost than hitherto, of colors of puce-garnet, violet, and reddish-violet tints in such a manner as to preserve the solidity of the substances of pure madder.

Hitherto certain colors, such as red, violet, puce, reddish violet, orange, and. similar colors were produced almost exclusively either by dyeing, with previous oxidation of the mordants, by means of madder, flower of madder, and analogous products, or by application and vaporizing without oxidation of mordants by means of extracts of madder. Moreover, and in proportion to the value of the result determined by the operator, to the said dyeing materials were often added diflerent products, such as wood in powder, certain astringents, or extracts of wood. By thus reducing the value. of the result the degree of solidity of the coloring matter fixed on the fabricrwas diminished.

It has therefore been my object to produce, at an equal if not at a lower cost, some of the shades of color mentioned above, while still maintaining the solidity, as it were, absolutely, of the substances of pure madder, and I have discovered, first, a solid puce depending on the normal limits of the value of the result.

And it is this mode of proceeding or operation that constitutes the object of the present invention. For this purpose I utilize the properties possessed by certain products of forming fixed bases, and particularly naphtylamine, a

product obtained from naphthaline, transformed at first into nitro-naphthaline, then distilled on iron filings.

After dissolving the naphtylamine in a mixture of azotic or hydrochloric acid and acetic acid, I treat it with 'chloric and chromic acid in the following manner: I take a salt of naphtylamine, nitrate, acetate, or hydrochlorate. I suitably thicken it; then I add in the color oxidizing salts, such as chlorate of potash,

salts of copper, salts of iron, as well as hydrofiuosilicic acid. After printing, I spread out the pieces of fabric in a room for some time, exposed to the air; then I fix the color bypassing them into a bath of bichromate ot' potash in which I have added a certain proportion of nitric or sulphuric acid or hydrochloric acid. Finally, in order to develop the puce'shade of color, I add a passing into chlorine (by preference an alkaline chloride) or into ammonia. I thus obtain a puce possessed of a great solidity, and which presents, as will be seen, nearly the same characteristics as aniline black.

For dyeing on threads or fibers of cotton or silk, separate or in skeins, I make use of the same elements; only, instead of operating on them in drying, I operate by a wet process -that is to say, by dipping.

The puce-garnet obtained by this process may be considered as a mother color, which, by slight modifications in its constituent elements or by subsequent operations, admits of the production of derivative colors, of which the principal baseis always fiaphtylamine.

Thus, with reference to dyeing threads or fibers of cotton or silk, if, instead of finishing by passing through ammonia and chlorine in order to develop the tint, the threads or fibers are passed into a bath composed of amtate of iron and aqua i'egalis, (a mixture of hydrochloric acid and nitric or azotic acid,) a beautiful violet is obtained. By substituting, in the last-mentioned bath, for the azotate of iron, chloride of iron and a salt of copper a reddish violet is obtained.

These two tints or shades of color, perfectly I distinct and derived from the same base, are possessed of great solidity as to acids, alkalies, and solar light.

My discovery consists, then, in fixing, by a regular and practical method, on silk and cotton, naphtylamine, a product known for a long time, but which, up to the present time, could only be utilized in makiu g the said rosetint of naplitylamine.

This latter product is employed in dyeing on wooland silk, or for making certain colors, such as a violet and a gray, for printing on cotton; but these last colors are wanting in solidity against the light, and have been but little, if at all, applied up to this time.

These colors equal in intensity those ob- The production on cotton and silk, by means tained with madder and its derivatives on a of the three processes above described, of the mordant of alumina, of iron, or of chromium, and. are equal if not superior to them in solidity.

Having thus described the nature of the said invention, and the mode of carrying it into eifect, I hereby declare that what I claim as of my invention is three tints or shades of color, being a pucegarnet, a violet, and a reddish violet.

F. LAMY, Fils.

Witnesses B1. DAVOUST, PREVOST.

US134076D Improvement in dyeing fabrics with nafhtytamine colors Expired - Lifetime US134076A (en)

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