DE446219C - Process for fixing basic dyes on cotton - Google Patents

Description

Process for fixing basic dyes on cotton. additive to patent 348 530. The main patent provides a method for fixing more basic Dyestuffs on cotton protected, which consists in doing this as a stain the sulfur products of phenol, its derivatives and substitution products are used.

It has now been found that, for this purpose, according to the method of patent 4o6 675 can use products available that arise from that one by the method of the patent 400 242 or by the action of Sulfur chloride on phenols available products, expediently at the same time Use of oxidizing agents treated with alkali sulfites.

This amendment has the advantage that the ones that come into question here Products are also neutral or acidic on the fiber, which is especially good for them Half-wool dyeing is important. Example

6 percent of the product, obtained according to example x of patent 406 675, is dissolved with 3 percent soda, brought to a liquor ratio of z: 12 and, with the addition of 30 percent table salt, cotton strands are pickled at 6o to 7o 'for one to two hours. Then it is unwound, rinsed well, and dyed as usual with 1/1 percent brilliant green (Schultz, Dye Tables, 5th edition, p. 158) with the addition of 2 percent acetic acid.

Example 2.

Standing baths are used for cotton pieces on the jigger, by adding 15 to 20 g of the product obtained according to Example 3 of patent 4o6 675, Dissolve in a liter, add 4 to 5 ends and finally add 5 to zo percent table salt. The goods are then squeezed off, rinsed and, as usual, colored with basic colors.

Example 3.

Half-wool pieces are baked for one to two hours at 25 ' with the product obtained according to Example 5 of Patent 406 675 by using 5 g of the same per liter of liquor with the addition of 10 to 15 g of table salt, rinsing well and coloring with 3 percent acid violet 7 BN (Schultz, Farbstofftabellen, 5th edition, p. 177) with the addition of 5 percent acetic acid at 75 '. You get thread-like dyeings.

The products are used for printing in an analogous manner.

Claims (1)

PATENT CLAIM: Embodiment of the process protected by the main patent 348 530 for fixing basic dyes on cotton, consisting in using the products obtainable by the process of patent 406 675 as a stain.