DD207630A3 - DISPERSANT MIXTURES FOR THE PREPARATION OF LIQUID COLOR-DISPERSES FROM WATER-PROOF OR WATER-SOLUBLE DYE COMPONENTS - Google Patents

Abstract

The invention relates to a dispersant mixture, which makes it difficult, the dispersion of water in heavy or. to achieve unloesische dispersing. It consists of oxaethylated alkyl alcohols or alkylphenols, monohydric or polyhydric alcohols and water-insoluble organic solvents with a boiling point below 130 DEG C in aqueous solution. The application of the dispersant mixture according to the invention takes place in the dyestuff industry.

Description

VEB CHEMICAL COMPANY BITTERFELD 2194

Dispersant mixture for the preparation of liquid dye dispersions of water-sparingly or water-insoluble dye components

Field of application of the invention

The invention relates to dispersant mixtures which are used for the preparation of aqueous dye dispersions. The suitable dyes are from the group of dispersion and pigment dyes and have a solubility in water of from 0 to 100 mg / l at room temperature.

Characteristic of the known technical solutions

It is known that water-sparingly or water-insoluble dyes can be dispersed with anionic or nonionic dispersants in aqueous media. Anionic dispersants act more or less as electrolytes and thus greatly reduce the viscosity of synthetic thickeners (eg, those based on acrylic acid derivatives), so that their use in formulating dyes printed with these aids is not possible. For this purpose, only non-ionic substances are suitable.

The advantages of using nonionic disperse disperse dyes and synthetic thickeners for printing on textiles is well known (DE-OS

1UPR1982 * O02äi5

Y-, / J

- 2 - 2194

2641159, DE-OS 2420356, DE-OS 2557556, DE-OS 2606906, DE-OS 2551432).

The following patents are known in the literature, which have the non-ionic formulation of water-sparingly or water-insoluble dyes content. In the patents DE-AS 2628445, DE-OS 2657774, 2557563 * DE-AS 2502839, 2510054, 2628445 various nonionic dispersants are called, although they are suitable for the dispersion of water-sparingly or water-insoluble dyes, but in all cases either

a) strong foaming (liquid at room temperature products that dissolve easily in water),

b) must first be converted into a liquid form (for example by heating to about 40 C) as a waxy, water-soluble paste, or

c) in their dispersing action are far behind the auxiliaries to be classified under a and b (dye reserving by the dispersant).

Object of the invention

The object of the invention is to provide a dispersant mixture for the formulation of water-insoluble or insoluble dyes.

By using this dispersant mixture, the previous disadvantages such

- Difficult energy-consuming dissolving process of the dispersant

Foaming during the milling process by the disperser

- dye reservation in the fixation of the later produced. Prints through the disperser

not more ..

Explanation of the essence of the invention

The object of the invention was to provide a disperser

- 3 - 2194

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To provide a mixture that allows a fast and low-energy dispersion of dispersion and Pignientfarbstoffen with a solubility in water of 0 to 100 mg / 1 at 20 ⁰ C. It has now been found that the disadvantages occurring in the usual Dispergatorgemischen no longer occur when the formulation of the dyes described an aqueous solution of an oxyethylated alkyl alcohol or alkylphenol with mono- or polyhydric alcohols and sparingly soluble in water, organic solvents having a boiling point 130 ° C uses wind.

Surprising was the fact that these solubilizers for the dispersant significantly improve the dispersion stability, so that even cheap oxyethylated fatty alcohols and alkylphenols provide excellent dispersions that are particularly fast to produce and have a good shelf life. So far, it was not known that such solvents have a fün this case so suitable effect in admixture with oxyethylated fatty alcohols and alkylphenols.

Suitable oxyethylated fatty alcohols and alkylphenols are, for example:

CH ₃ (CH ₂ ) ₁₅ _ ₁₇ -O- (CH ₂ CH ₂ O) ₁₅ -H CH ₃ (CH ₂ ) ₂₅ -O- (CH ₂ -CH ₂ O) _1OO -H CH ₃ (CH ₂ ) ₈ -J ^ ^- S-g As one suitable -0 (CH ₂ -CH ₂ O) ₅ H CH ₃ (CH _{2) 8} -CH ₃ (CH ₂₎ or polyvalent alcohols or in water

2194

poorly soluble organic solvents have been found to be the following substances: methanol, ethanol / toluene, xylene, hexane triol, octanediol, butyl glycol, butanol and the like. a. A particularly good effect is achieved when using n-butanol and toluene.

The dispersion generator according to the invention consists of 20 to 80% by weight of oxethylated allyl alcohol or

alkylphenol

5 to 20% by weight of mono- or polyhydric alcohol 0.5 to 15% by weight of water-insoluble organic solvent ad 100% water.

embodiments

The following exemplary embodiments are intended to explain the invention in more detail, but without being limited thereto. The parts given are parts by weight.

- Example 1:

An acetate silk fabric (2/2 acetate) is printed with the following printing paste after the film printing process:

40 g of 25% presscake from CI. Dispersorange 25 (without dispersant) by means of a stirrer at about 2000 L / min with 4 g of a dispersant mixture of 50 parts of a condensation product of 1 mol

Ony lphenol with 15 moles of ethylene oxide, 10 parts of n-butanol, 5 parts of toluene and 35 parts of water

homogenized and ground in a bead mill for 40 min. 500 g of the thickener based on acrylic acid derivative and 456 g of water are successively added to this dispersion

to.

1000 g

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The resulting prints are dried, fixed at 102 ^° C. for 30 minutes in saturated steam and washed at 40 to 50 ^° C. This gives a uniform, brilliant, strong orange printing.

Example 2:

A polyester knit is printed by means of film printing with the following printing paste:

60 g of a 30% presscake from CI. Disperse red 73 (without dispersant) are by means of a high-speed stirrer at 2000 rev / min with 6 g of a dispersant mixture consisting of

60 parts of a condensation product of 1 mole of a saturated alkyl alcohol (having up to 17 carbon atoms) with 70 moles of ethylene oxide 10 parts of hexane triol lOTeilen ethanol 20 parts of water

homogenized and ground in a bead mill for 50 min. 500 g of a thickener based on acrylic acid derivative and 434 g of water are successively added to this dispersion

to.

1000 g

The resulting prints are dried, fixed for 5 min at 175 ⁰ C in hot steam and washed as usual reductive. This gives a strong, uniform, ruby-colored printing with good fastness properties.

Example 3:

Instead of the dispersant mixture indicated in Example 2 is used

10 g of the following mixture:

40 parts of a K-cndensproduktes of 1 mole sown

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saturated alkyl alcohol having 14-18 carbon atoms reacted with 15 moles of ethylene oxide

10 parts butyl glycol 5 parts toluene

45 parts water

The completion of the printing is carried out as indicated in Example 2. You also get a uniform print image. The viscosity of the printing paste is not affected.

Example 4:

A polyester fabric / cotton fabric (70:30) is printed with the following printing paste:

50 g of liquid pigment (see below approach) are in

700 g of emulsion thickening (oil-in-water type) and 150 g of pigment binder based on polyacrylic acid derivatives

and 100 g of water

stirred.

1000 g

Obtained after condensation (4 min 150 ⁰ C) a brilliant, strong-colored red print.

Pigment dye formulation: 450 g of water

120 g of a dispersant mixture as indicated under 3 350 g C.I. Pigment Red 146

80 g Polyäthylenglykcl 1000 g

Claims (2)

- ¹ »VJ J / * J O invention claim A dispersant mixture for the preparation of liquid dye dispersions of water-sparingly or water-insoluble dye components, such as dispersion and pigment dyes having a solubility in water of 0 to 100 rcg / 1 at 20 ⁰ C, characterized in that it From 20 to 80% by weight of oxyethylated alkyl alcohol or alkyl phenol, From 5 to 20% by weight monohydric or polyhydric alcohol, from 0.5 to 15% by weight water soluble organic solvent in one Boiling point below 130 ^° C. ad 100 water. Dispersant mixture according to item I, characterized in that n-butanol is used as the monohydric or polyhydric alcohol. Dispersant mixture according to item 1, characterized in that toluene is used as the organic solvent sparingly soluble in water.