Monoazo dyes which are stable under dyeing conditions, their preparation and their use
AssigneesDyStar Textilfarben GmbH & Co. Deutschland KG, Dystar Japan Ltd.
InventorsUlrich Buhler, Hubert Kruse, Heinz G. Zorn, Klaus-Wilfried Wanken
Life of this patent
Estimating the term…
Abstract
The present invention relates to the .beta. and .gamma. modifications of the dye of the formula (I) ##STR1## as well as to a process for their preparation and their use for dyeing and printing textile materials of polyester and/or cellulose esters or blended fabrics of these materials and wool or cellulose.
Claims18
Dye of the formula (I) in the .beta. or .gamma. modification ##STR4## which has lines at the following angles of diffraction 2 .theta. (.degree.) in the X-ray diffraction diagram (Cu K.sub..alpha. mradiation):
- .beta. modification
- high-intensity lines:
- 4.9;
- 13.95;
- 17.15;
- 19.5;
- 21.85;
- 25.2;
- 26.05;
- 28.75;
- medium-intensity lines:
- 16.0;
- 24.3;
- 27.3;
- 30.0;
- 31.15.
- .gamma. modification
- high-intensity lines:
- 11.57;
- 14.90;
- 17.14;
- 20.64;
- 24.35;
- 25.05;
- 26.37;
- medium-intensity lines:
- 10.26;
- 13.71;
- 16.81;
- 18.71;
- 20.94;
- 22.07;
- 23.84;
- 28.81;
- 29.69.
Solid dye preparations containing
- 10 to 50% by weight of at least one dye corresponding to the formula (I) in the .beta. or .gamma. modification according to claim 1,
- 10 to 80% by weight of lignosulphonate,
- 0 to 20% by weight of a condensation product of naphthalene-sulphonic acid and formaldehyde,
- 0 to 10% by weight of a non-ionic surfactant,
- 0 to 1.5% by weight of a wetting agent,
- 0to 1.0% by weight of a defoaming agent,
- up to 12% by weight of water (residual moisture) and
- up to 1.5% by weight of a dustproofing agent, based on the dye preparation.
A process for dyeing textile materials of polyester and/or cellulose esters or blended fabrics of these materials and wool or cellulose by adding the .beta.-modification of the dye of the formula I and said materials to a dye bath.
Dependencies are inferred from the claim text.