DE433152C - Process for fixing pigments and dyes - Google Patents

Description

Process for fixing pigments and dyes. To get fabrics in easy way to print with pigments, one used until now the albumin or Case impression, in which the color body rubbed with albumin or casein thickening, imprinted and by sharp drying or brief steaming and by the thereby conditional coagulation of the albumin or casein mechanically fixed on the fiber will. In more recent times, so-called sericose printing has also been used Instead of albumin or casein thickening, a solution of acetyl cell silose was used will.

It has now been found that the most varied of colored bodies washable and can be fixed in a simple and cheaper "ice" using the resins formed from urea and aldehydes.

You can use both the finished resins, in ethylene chlorohydrin or others Appropriate j solvent dissolved, apply as well as the components urea and Aldehyde itself: j In the latter case one can add means which the condensation affect, e.g. B. small amounts of acids or acid-releasing products, like Aninioniumforiniat, or z. B. weakly basic products such as ammonia or Hexamethylenetetramine. Mau f receives prints of partly more beautiful, clearer nuances and better rubbing and soap fastness than album printing. Suitable for j fixation lakes, pigments, basic, substantive and vat dyes, the colored Color bodies at all, e.g. B. also 1Tallbronzen.

Fixing can be done by drying or similar to albumin printing Steaming or by hanging.

Phenol-formaldehyde condensation products are already available for the present Purposes used, but are those produced with the help of ureaforaldehyde resins Prints clearer and more washfast than those with the well-known phenol-formaldehyde condensation products produced prints, and also have the liquor forinaldeydhaltigen printing pastes a greater expansiveness.

Example i. Printing approach: i3og Litholechtscharlach R (cf. Staeble, Die newer dyes the Pigment paint industry strie, p. io4), zoo g Guminiarabiküm i: i, 150 g of ethylene chlorohydrin and 500 g urea formaldehyde resin aggregate turns over i ooo g. After steaming for about 5 minutes, you get a beautiful scarlet fever that is more washable than the corresponding album print. Example e. Pressure approach: 1o g Rhodamine B extra (Schultz, color substance tables, VI. Ed. No. 573), 30 g glycerine, 226 g water, i80 g tannin i. Alcohol 3: 4, Zoo g urea, 350 g formaldehyde 30 pro cent and 4 g hexamethylene tetra- mi n 1000 g. After fixing, a very beautiful, bright pink with good properties is obtained.

Example 3. Pressure point: foo g ultramine blue, 12o g urea, 300 g formaldehyde 30 pro cent or acetaldehyde, 48o g of Gu mmiarabic i: i 1000 g. After you hang up, you get a pretty pale blue.

Example:.. Pressure make: 300 g indanthrendarkblan BO i.Tg. (Schultz, Tab., VI. Edition, No. 763), i8og gum arabic i: i, i20 g urea, 3009 30 percent form ald ehydrate solution goo g. After steaming you get a nice, very washable blue-black effect. Example. Print approach: Zoo g gold bronze, Zoo g urea, 3509 30 percent form aldehyde solution and 250 g Gu mmiarabikum i: i 1000 g. It is printed on a colored background and obtained after steaming. a nice gold-colored effect.

In the same way, the most varied of other bodies can be printed, e.g. B. Blanc fixe, carbon black, pigment black, etc.

Claims (2)

PATENT CLAIMS: i Process for fixing pigments and dyes, characterized in that this is done with the condensation products of urea and aldehydes in the presence of a solvent with the usual thickeners and then fixed by hanging, drying or steaming. 2nd amendment of the method according to claim i, characterized in that instead of the finished Condensation products Mixtures of urea and aldehyde or these split off Compounds used, with or without the addition of condensing agents.