DE462200C - Production of reserve colors - Google Patents

Description

Manufacture of reserve dyeings In the manufacture of reserve dyeings, such as B. Ratik dyeings, natural or artificial resin products are used or waxes as a reservation agent, w # elch more or less alkali-soluble or are saponifiable. This results in dyeing in alkaline baths occurs, various disadvantages such. B. fuzzy contours or partial detachment the reserve. It is also not possible to use the previous resin reserves the manufacture of batik on a large scale used indigo on the hydrosulphite vat to color. Rather, one had to use the cumbersome zinc lime vat, which as is well known, no continuous work is permitted. When overprinting the resin or wax reserve with alkaline printing inks (nitrosa printing inks, vat inks etc.) the resin or wax partially dissolves with saponification, thereby only imperfect reserve effects can be achieved.

It has now been found that all of the disadvantages associated with AlkaRunstability the previous wax and resin products are related, through the use of alkali-insoluble synthetic resins, which are in acids or in organic solvents or in both are soluble, can be eliminated. With the help of the alkali-resistant Harzie is it possible to dye such reserve items on the hydrosulfite vat or also overprint with strong alkaline real colors. This achieves a significant one Simplification of the way of working, thus a considerable increase in production, and is also able, by using such dyes, to apply them must be done on the fiber under alkaline conditions -. novel and versatile, to achieve real reserve effects of particular joy in colors and variety.

Example i.

A resin reserve consisting of molten artificial resin, prepared according to French Patent No. 612 3o6- is printed in a suitable manner on cotton fabric and 'the BaumwoRstoff n is in the usual way i hour at 30' dan primed C with a solution of broken after cooling , which contains 1 5 g of 2 - 3-oxynaphthoic acid-a-naphthalide and 45 cem sodium hydroxide solution 34 # "B6, and developed in a known manner with a diazole solution - which contains 10 g of p-nitro-o-anisidine per liter. After the dyeing is finished, the resin reserve is removed by melting or washing with acids or organic solvents, resulting in a beautiful, pure white batik pattern with sharp drawings on a burgundy background.

Example 2.

The same ham reserve as in Example I is printed on cotton fabric and broken. After that, in a sodium hydrosulfite vat, the liter iog indigo powder contains, colored in the usual way.

After removing the resin reserve, you get a nice, sharp, pure white batik pattern on indigo background.

Example 3.

The cotton fabric is treated as in Example12; After dyeing with indigo, the resin reserve is partially removed and you, rch appropriate fitting of a printing ink, which contains 1 1, 4 g nitrosanannate nunisalt of 5-dichloranflin and 24g diacetoa-cetyl-o-tolidine with the required amount of caustic soda in i ooog paste, overprinted by hand, imposed and developed in a bath containing acetic acid and Glauber's salt.

After removing the resin reserve, you get a batik pattern made of pure white, yellow and green tones on an indigo background.

-. Example 4.

The cotton fabric is treated as in example z. As a printing ink, which is applied to the resin Reserve, eingepai3t, such is to be used, the 1 5 o g one by the patent --91 076 concentration mixture produced from the Nitrosamü-lnairiumsalz of m4Nitro-p-toluidine and the sodium salt of 2 - Contains 3, -oxynaplithoic anilide in 100 g . The development takes place in the same way.

A batik pattern of pure white and red shades is obtained on an indigo background. , Example 5.

The same resin reserve as in the previous examples is printed on cotton fabric and broken. After that, dyeing is carried out in the usual way at about 50 ° C in a hydrosulphite vat containing --og 3.3'-dibromine - N! -Dibydr # o.- i - 2 - i ' - 2-, a! NthsacXnonazine in the dough per liter. A sharp, pure white batik knife on a blue background is obtained.

Example 6.

The same resin reserve as in the previous examples is printed on cotton fabric and broken. It is then overprinted or padded with a printing ink which contains 1 5 o g of a concentrated mixture prepared according to patent specification 29 1 o7.6 of the nitrosamine sodium salt of m-nitro-p-toluidine and the sodium salt of 2 -3-oxynaphthioic acid anffide in i ooog , and developed in the same way.

A pure white batik pattern is obtained on a deep red background.

The process can be carried out in the same way with other resins having the properties given above. The elasticity of the resins used can be adapted to the purpose pursued by the way in which the resins are manufactured or by adding plasticizers. _

Claims (1)

PATENTANSPRUCI-I: Preparation of use of artificial colorings reserve resins under DA 'by gekeinnzeidhueit that is used in acids or in organic solvents or in both soluble in alkalis unlös # Liche synthetic Harze-: