US1051456A - Process for the coloring of material. - Google Patents

Description

UNITED STATES PATENT GFFICE.

LEO SCHULHOF, OF NEW YORK. N. Y., ASSZGNOR 336 THE AMERICAN DIAMALT (10., OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

'lPROCESS FOR COLGRING (3F MATERIAL.

No Drawing.

Application filed December :2

To all whom it may concern. 7

Be it known that. 1, Leo Scinmiior, a subject of the Em 'ieror of Austria-Hungary, residing at New YOFlI city, in the county ot lei-v York and State ot New Yuri-1, have iii-- suited certain new and v 8 113 in Processes tor the o t, of which the. following is and exact description such others skilled in the art to which i' tains to make and use the same.

This invention relates to the coloring of material and with respect to its more specific features to a process for reducing and dis solving various dyes.

Que of the objects of the invention is to provide a practical and eliicicnt process or rendering dyes soluble.

Another object of the invention to pro vide a practical and etlicient process for the reduction of dyes.

Another object of the invention is to provide a. process wherein an ctlicient control of the fixing of dyes is secured.

Another object is to provide a process of the kind described which shall be simple and inexpensive.

Uthcr objects will be in part obvious and in part pointed out hereinafter.

The invention ccordingly consists in the several steps and'the relation and order of one or more of such steps with relation to each of the others thereof, which will. be exemplified in the hereinafter disclosed process, and the scope of the application of which will be indicated in the claims that follow.

In order to make the invention clearer it to be noted that there are some classes of commercially important dyes which are sub stantially insoluble in the ordinary solvents used in dyeing, such as Water, alcohol, etc. Usually, in dyeing material, either uniformly or in the manner of topical coloring, these insoluble dyes, during at least a 111E218 urnble interval of time, must be rendered soluble, and while in the soluble state they are absorbed by the material to be dyed. Subsequently, and While so incorporated in the material they are returned to the insoluble form. Various means have been devised Letters to these dyes soluble.

Patented Jan. 28, 1913.

Serial No. 599,1s7.

For example, of the sulfur dyes one of the most frequently used solvents is sodium sulfid,

win: in dissolving the indigos, sodium hyi ...te r a sii'uilur agent in alkaline solurused. die course of a number of experit has been found that the substance in alkaline solution acts as an eflisolvent. The maltose may be employed or with substances adapted to a similar use and its action in the case of certain 1- seel'ns to be a reduction whereby oxygen equivalent extracted from the dyes and they become soluble.

The following procedures include an em bodimcni of the present invention, as'applied to dyeing and printing.

[fr/ample J. For (Z g ez'ng.T en parts of indunthrcne blue are mixed with ten parts of "olulioiz containing diastase and upward 35% in .tosc and the mixture heated to This mixture dissolved in a causi lye solution containing one part of causii to one hundred parts of Water. Into this solution. is then introduced a quantity of cotton ye. ru in the proportion of one part of yarn for every thirty parts of solution. The bath is kept at suit-able dyeing temperature say 140"" ll, until the material is sufficiently impi hater. The latter is then removed, exposed to the air, Washed and dried, whereby the dye is fixed on the fiber. Although cotton yarn been mentioned specifically in this example, it is to be understood that the process is also suitable to many other kinds of material. It is to be further understood that. the process is generally applicable to the various modes of dyeing, that a treatment with any suitable oxidizing agent may replace the exposure to air and in both cases the treatment may be carried out with or u'ithmit the addition of acid to the material. In some cases, Where acid can be used, a more rapid oxidation may be brought about.

Eaumzple 2 For 79m'nting.0ne hundred parts indanthrcne blue are mixed with.

cific gravity of 30 Be. To this mixture seven hundred parts of-starch or other thickening material are added. Cotton tabric is printed with. this mixture, then steamed for one hour, washed and dried, In

generally applicable in com "ion w rious i'ncdes of printing, including par:

ding, etc.

It to be understood that any suitable maltose-containing exiiraat with an enzym. might be employed. diast-ase is here included on account oi l catalytic power and experiment s dicate that a more eilicient action in s=.:cured when such an enzym present than when it is omitted.

Numerous experiments have prey-en that maltose may be also success oily employ in connection with other substances to dissolve and reduce dyes. For example, a m ture of maltose and hydrosulfite oi": soda possesses properties, which make it especially suitable to many kinds of dyes Aliza. line hydrosuliites alone rapidly dissolve and reduce various dyes and iixirw" accomplished when they are use of the fact that the hyih iHl il' their solvent and reducing properties under the action of fixin agents,whereliy the dyes incorporated in the material are rendered insoluble. Maltese on the other hand. has certain properties which insure a slow fixing action and by suitably c nil 'nio the. two, mixtures may be obtained ily adapted to various dyes and materials. llcnce it will. be readily seen from the .i'orcgi'iing that a very eliicient means of control of the living of dyes on material may be SGCllIQtldJY the combined use of these two agents. Th s use of maltose and a hydrosuliiie applicable to the various dyeing and printing processes.

The invention is applicable to insoluble dyes and also to reducible dyes and the following classes are some of those to which it is especially adapted: to) the indigo ilyis including indigo and halogen, ailiyi, t d other derivatives thereof; (it the thio-indigo dyes including thio-indigo and its dcrivatives and substitution products with. other groups; (0) the antln'aquinone vat dyes, which appear in the inariiet in many combinations and under various names as indanthrene, algol, etc; and (d) the sulfur dyes and their derivatives, commercial examples of which are the katigen colors. sulfur blacks and ii'ni'nedial colors. it will thus be seen that a simple practical process is provided wherein the objects of the invention are-achieved 1'21 ll'zu :3 n account It will be obvious from the foregoing that the substance maltose might be employed to reduce and dissolve various organic substances.

it is to he understood that the process may be modiii 'd to accord with the various "-de y=riai used, and although the anthraquinone vat dyes and e conspicuous groups to which lapted there are other classes 'ch it might be also efficiently many changes-1 could be made in the above proce-s and many apparently widely' different e boriimenis of this invention could be to without departing from the scope thereof, it ntended that all 'matter .-t ined in the ere description shall be i as E strative and not in a it also to he understood 'uag e used in the following int: nlcd to cover all the generic features of the invention herein iced, and all statements of the scope of the inieniion, which, as a matter of lanht be saidv to fall therebetween.

described my invention, what I new and desire in secure by Letters endering a. dye soluble by applyii. disastasc and ll'ltlltOSQ thereto. of .urcpln'ing a bath which conmriss'; rendering; a suliur dye soluble by apply: thereto.

'l of preparing a bath which COiffi'il'h-Afrs di. rotting an insoluble dye in maltose solution.

A coloring process which comprises dissohing' a dye in a mixture of maltose and an alkali, introducing a material to be dyed into the solution, and fixing the dye upon the material.

5. The process of preparing a bath, which consists in dissolving a dye in a solvent couiprising maltose and a reducing substance adapted to quickly lose its reducing power upon exposure to an agent adapted to render said dye insoluble.

ii. The process of preparing a bath, which compri; dsolving an insoluble dye in a solvent comprising maltose and a reducing agent adapted to dissolve said dye, said reducing agent being adapted to quickly lose its solvent power upon exposure to arfagentadapted to render said dye insoluble.

7. The process of preparing a bath which comprises dissolvin" an insoluble dye in maltose and an alkaline hydrosulfite.

8. A coloring process, which comprises applying an insoluble dye to a suitable material, in the presence of maltose and another substance capable of dissolving said dye and adapted to quickly lose its solvent power upon exposure to an agent adapted sulfite and a caustic alkali, and fixing said 10 to fix said dye upon said material. dye upon said material.

9. A coloring process, which consists in -In testimony whereof I aflix my signaapplying a dye to a suitable material, in the ture, in the presence of two witnesses. presence of maltose and an alkaline hydrosulfite, and fixing the dye upon the material. LEO bL'HULHOB L0. colorlng process which consists in \Vitnesses: applylng an insoluble dye upon a suitable J. B. L. ORME,

material in the presence of maltose, a hydro- L. A. \VATsoN.

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