CS226366B1 - Organic dye liquid composition - Google Patents

Description

SUMMARY OF THE INVENTION The present invention provides a liquid preparation of organic dyes suitable particularly for application in textile printing. From available patent literature such as brit. U.S. Pat. 1 474 701 or French. U.S. Pat. No. 2 298 584, processes for the preparation of basic disperse dye or pigment compositions using oxyethylation adducts based on alkylphenols, phenol or cresol in combination with monoethanolamides or diethanolamides of acids having a carbon number of 12 to 24 and optionally polyaddition products of ethylene oxide and propylene oxide are known. the composition of these compositions. While these finishes are suitable for preparing organic pigment pastes for use in textile transfer or pigment printing, they do not permit the preparation of sufficiently fluid and highly concentrated dispersion dye and pigment compositions without a tendency to thixotropy.

It has now been found that the desired properties can easily be achieved by applying a combination of non-ionic surfactants based on oxyethylated acids of 6 to 18 carbon atoms, or their triglycerides with 20 to 40 moles of ethylene oxide with ionic anionic dispersants based on naphthalene monosulfonic acid condensation products with formaldehyde of ligninsulfonates obtained by oxidative degradation in alkaline medium.

Liquid preparations of organic dyes intended for textile printing consisting of 15 to 50 wt. % of a dispersion organic dye or pigment, 1 to 10% by weight of _a non-ionic dispersant based on oxyethylated aliphatic carboxylic acids having a carbon number of 6 to 18, or their triglycerides, 0.5 to 5% of hia. anionic dispersant based on the condensation products of naphthalene mono- 2,226,366 formaldehyde sulfo acids or dispersant based on oxidatively degraded lignin sulfonates. The advantage of these compositions is that, compared to other commonly used compositions, most of the dyes used can achieve the desired dispersions in a sufficiently short period of time with a high organic dye content while maintaining the desired rheological properties. A prerequisite for application with synthetic dies commonly used in textile practice is that the ionic surfactants and the starting pigment contain a minimum amount of simple inorganic electrolytes that greatly increase the flowability of these printing compositions. The basic organic dye composition may preferably be supplemented with 10 to 40 wt. urea as a hydrotropic agent and 2-ethylhexanol-based antifoam to reduce foaming of the dye dispersion in the milling process.

For longer storage, the composition of said composition may be supplemented with antifungal agents such as formaldehyde.

For the process of preparing the organic dye compositions according to the invention, said surfactants may preferably be used in a total amount of from 5 to 10% by weight.

The process for the preparation of the organic dye compositions of the invention is illustrated in the following examples, where the parts are meant (by weight).

Example 1

The electrolyte-free material is mixed with 5% of a 20-30 mole non-ionic palm kernel oil surfactant, ethylene oxide, 2.5% lignin sulphonates, urea and 60 L of low inorganic electrolyte. The suspension is fed into a bead mill where it is rowed

3 226 366 successive passes are made to the desired dispersity. This provides an organic dye paste suitable for application in textile transfer printing.

Example 2

The preparation procedure is similar to that of Example 1, except that the basic dispersion is prepared in a larger dilution and using tamole dispersants instead of the lignin sulphane-based preparation and is dried in a spray drier after reaching the desired dispersion. This dry base dispersion is converted into a liquid form by mixing with 60 L of low inorganic electrolyte water and treated by desagglomeration in a single pass through a bead mill.

Example 3

4-0 kg dye formula

IIh ₂ COCH ₃ are mixed with 1 kg of lignin based on 3 kg of product oxyetylace palmkernel oil with 20 to 30 moles of ethylene oxide, 12 kg urea and 50 1 of demineralized water. The slurry is milled to the desired dispersity by the required number of passes on the bead mill, and the resulting dispersion is usable for textile transfer printing.

Example 4: part of a low inorganic electrolyte pigment C.I. Pigment Red 177 formula

4,226,366 are mixed together with 0.023 parts of a lignin sulfonate-based preparation, 0.05 parts of a palm kernel oil oxyethylation product containing 20 to 30 moles of ethylene oxide, 0.3 parts of urea, 0.02 parts of an aqueous formaldehyde solution containing about 37% effective fabric and 1.2 parts of water. The base suspension is ground on a bead mill and the product obtained is useful for textile pigment printing.

Example 5

Blue pigment C.I. Pigment Blue 60 formulas

^e Mel a bead mill together with 0.05 parts of lignin-based, 0.05 parts of product oxyetylace palmkernel oil with 25 to 35 moles of ethylene oxide, 0.25 parts of urea and 1.5 parts of distilled water. An aqueous dye paste is obtained which is suitable for textile pigment printing applications. To reduce foaming, 0.005 parts of a mixture of 80% 2-ethylhexanol and 20% sodium sulfosuccinate are added to the mixture.

Claims (1)

Liquid preparation of organic colorants for textile printing, characterized in that it contains <15% to 50% of dispersing organic dye or pigment, 1% to 10% of non-ionic dispersant based on oxyethylated aliphatic carboxylic acids having a carbon number of 6 to 18, optionally their triglycerin, 0.5 to 5% of anionic dispersant based on condensation products of naphthalene-monosulfoacids with formaldehyde or dispersant based on oxidatively degraded lignin sulphonates, optionally 5 to 30% urea and 0.01 to 0.5% 2-ethylhexanol and 10 to 70% water.