DE126599C - - Google Patents

Description

IMPERIAL

PATENT OFFICE.

- M 126599 CLASS 8 k.

With colored etching of substantive cotton dyes according to the various for this It is a generally felt disadvantage that the etching colors obtained are generally felt are often not of desirable authenticity and vividness of nuance. Man has tried to remedy this problem in various ways, e.g. B. Treat of nouns tannin and tartar emetic dyeing before printing with the Pewter colored etching. Apart from the fact that this procedure is very expensive and cumbersome, On the other hand, it also has the great disadvantage that the coloring is caused by the tannin suffer from simultaneous clouding of the nuance, making the process only darker, cloudy Tones becomes applicable. It has also been suggested with albumin and alkaline Tin etching to work; but the results obtained are also unsatisfactory, because the caustic masses, especially when using the particularly effective egg album, are too expensive come to a standstill, furthermore because these etching colors approach preprinted steam black very hungry, and finally because the authenticity of the etchings obtained in this way is insufficient.

These or similar inconveniences show more or less all those which have hitherto come into use Working methods.

In the same way, when alkaline dyes are etched with sulfites, the inconvenience that the etching colors obtained, for lack of a sufficient fixative, often do not have any have sufficient intensity and wash fastness.

It is now known that Turkish red oil and allied bodies have a beneficial effect on the fixation of the basic and most alizarin dyes act during printing. A preparation knows bleached cotton ware with Turkish red oils and its substitutes for later Printing of basic or alizarin vapor inks is common practice. Over a Application of this observation for the color etching of basic and substantive colorations is but nothing has become known yet. Nor was it to be assumed that this would be a success would occur. Up to now there was no reason to add basic staining afterwards Treating Turkish Red Oil, and you couldn't know how to treat Turkish Red Oil Aetzprocefs would behave; it was rather to be assumed that it was used as a fixative for basic Dyes would counteract the etching process, as is actually the case with the ■ • Oxidation method is the case.

When applying Turkish red oil preparation to dyes with nouns The coloration obtained is asserted by the difficulty that the Turkish red oil as weak alkali strongly removes the dyes from the fiber, especially when, as is often the case, a warm, weakly ammoniacal oil solution is used; also show up when drying dyeings prepared in this way on the generally customary drying

Apparatus (copper drying drums) multiple troubles.

Our experiments have now shown that, in spite of the above difficulties, a combination of oiling the goods is possible with the Aetzprocefs, and we have succeeded in finding a process to invent as perfect as possible colored etchings.

The difficulty of using Turkish red oil on noun-colored underground was overcome by adding a suitable one to the preparation bath Gave salt (table salt or Glauber's salt), worked in a cold bath and z. Am the hot flue dried up.

The advantages of using this new method are manifold.

1. The result is livelier, more intense and ■ more genuine etching colors.

2. The printing inks need not be kept so concentrated that they are essential Dye savings occur, especially since the effect, for example, with the expensive rhodamines is particularly good.

3. The procedure is cheap and easy to carry out.

4. The process offers the possibility of producing completely new printed items, their Production failed earlier due to the excessive insolvency of the etching colors.

5. The etchings do not require the use of albumin, so that they are preprinted or do not or only marginally interfere with the vapor black printed afterwards · They leave the goods soft and are therefore extremely well suited for the rough article.

Example A.

Bleached cotton velor is dyed on a jigger or dyed padding with 2 Y ₂ pCt. Eboli blue B and 30 pct. Glauber's salt. After dyeing and rinsing, it is dried. After drying, a two- or three-roll padder with a large pressure is padded with the following oil bath. Calcined on 10 liters of cold Condensate 400 to 600 g of Turkish red oil and 100 g of Glauber's salt.

The solution should be milky, so some ammonia is added, until the fleet quite become clear one About Schufs ^one of ammonia, however, one wants to avoid. The amount of Glauber's salt can possibly be increased, but not so far that the Turkish red oil is salted out. Instead of the calcined Glauber's salt, common salt or a similarly acting neutral salt can be used. After padding, it is best to dry it in the hot flue. (If certain conditions are met, however, it is also possible to work on the 'drying cylinder.) A three-color pattern is printed on this with the following three colors:

1. Etched orange.

10 g homophosphine G, 45 cc acetic acid 7 ⁰ Be., Dissolve in a water bath, stir into 65 g gum water 1: 1, continue to heat until the dye is as completely dissolved as possible, then stir cold and add 40 cc tannic acetic acid 1: Mix 1 and then ι 50 g of stock batches well and pass through.

2. Etching violet.

3 _^3/4 g of brilliant green Kryst, i '/ ₄ g Acridine Orange NO, 5 g Acridine Yellow G, 45 cc acetic acid γ ⁰ Be, 65 g of gum water i.:. 1 operate in the same manner as indicated at Aetzorange cold to 40 cc of tannin-acetic acid ι: ι and then another 1 50 g of stock, stir well and pass.

3. Reprint black SS.

60 g wheat starch, 120g yellow dextrin, 380 cc water, go cc acetic acid η ° Be., 300 g Neudruckschwarz SS, 40 cc water, 10 g tree oil, cook well, stir cold, then 40 cc acetic acid chromium of 20 ⁰ Be. add, stir well and pass.

Master records.

ι 1 acetic acid tin oxide v. i8 ° Be., 1 kg yellow dextrin (great), 60 g citric acid, crystalline, in an enamel kettle or clay pot in Dissolve the water bath and stir until cold.

Tann in acetic acid.

ι kg tannin (great), 1 1 acetic acid 7 ⁰ Be., dissolve in a water bath and adjust to 2 1.

Acetic acid tin oxide.

a) 1200 g tin salt in 800 cc acetic acid v. 7 ⁰ Be. to solve,

b) 1200 g lead sugar in 800 cc acetic acid v. 7 ⁰ Be. and ³ solve / ₄ 1 boiling hot water,, unite the two solutions allowed to settle, the clear and be filtered to i8 ° Be. place. After printing and drying, steaming is carried out for 50 minutes at 0.15 to 0.2 atm.

This is followed by a bath at 60 ° C. each for 30 to 45 seconds 10 g chalk, tartar and table salt per liter of liquor, then wash until that Rinse water runs off clear, dry, finish. In all operations the goods are running after the line.

Example B.

Mercerized satin is dyed with 3 pCt. Tannin, 1 ¹ J ₂ pCt. Emetic tartar and ¹ J _{2 pCt.} Brilliant cresyl blue 2 B. After dyeing is

Claims (3)

rinsed well and dried, then oiled with a 4 to 6 proc. Solution of Turkish red oil and dried; then the following three. Colors printed: i. Aetz heliotrope. 7 ^J / ₂ g rhodamine 6 G, 7Y ₂ g neutral peacock blue 1, 75 cc boiling hot water; Dissolve in a water bath, stir the solution into 175 g gum water 1: 1, continue to heat until the dye is as completely dissolved as possible, then stir cold and add 230 g sulphite caustic, stir well and pass. 2. Aetz green. 16 Y ₂ g acridine yellow G, 13V ₂ g cotton blue VB, 75 cc boiling hot water, 175 g gum water 1: 1, 230 g sulphite caustic, stir well, pass. Preparation of the printing ink as with Aetz-Heliotrop. 3. Reprint black SS.
Prepare as indicated in example A. Sulphite etching. 625 g British gum, 550 cc water, dissolve by heating, stir cold and add cold 1000 g potassium sulfite liquid v. 44 ° Be. After printing and drying, steam in the small Mather Platt for 8 to 10 minutes, Provide with plenty of water, centrifuge, strain, apple. Patent-A ν saying: Process for increasing the vividness, intensity and authenticity of by printing finished basic dyes and reducing agents obtained colored etchings on with suitable, etchable, nouns cotton dyes or basic dyestuffs, characterized in that the dyed fabrics or yarns are produced the colored etching of a preparation with Turkish red oil or its substitutes, is expedient with the addition of neutral alkali salts.