DE3010979A1 - COLORING PROCEDURE - Google Patents

Description

BAYER AKTIENGESELLSCHAFT 5090 Leverkusen, Bayerwerk Zentralbere i

Patents, trademarks and licenses My / Kü-c

20th March B8G

Dyeing process

The invention relates to a method for one-bath, one-step dyeing of fiber blends of cellulose and polyester fibers with reactive and disperse dyes using the pull-out process from those containing electrolytes Dyebaths, characterized in that a dyebath is used which contains a reactive dye with fluorotriazinyl and / or fluoropyrimidinyl group and 0.1 5 g / l of an acid donor which is effective at dyeing temperature contains.

Organic dyes from the anthraquinone, azo and phthalocanine series are particularly suitable as reactive dyes into consideration, which is a monofluoro-s-triazinyl have, in particular those which have a halogen atom as a further substituent on the triazine ring, in particular Chlorine, an ether or thioether group or in particular contain an optionally substituted amino group or fluoropyrimidine dyes in particular those with a difluorochloropyrimidinyl radical. Such dyes are described in large numbers, e.g. in British Patents 1,169,254; 1,188,606; 1 526 840.

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As acid donors water-soluble derivatives are used organic or inorganic acids which release specifically in Temperturbereich of 60 acid to 100 ⁰ C groups and therefore the pH of the initially neutral to mildly alkaline dyebath during the dyeing process in the acidic range, preferably up 'on Shift pH 4-5.

Suitable acid donors include: alkali metal salts of halocarboxylic acids and their amides like monochloroacetic acid. Sodium, sodium dichloroacetate, 3 sodium chlorpropionate, monochloroacetamide; Lactones such as butylrolactone; Half esters of sulfuric acid such as lauryl sulfate, hexadecyl sulfate or octadecyl sulfate and preferably 2-ethylhexyl sulfate, Butyl sulfate, as well as the sulfuric acid esters of oxyethylated and oxypropylated alcohols such as e.g. Butyl glycol sulfate, butyl diglycol sulfate, and also C.-C. alkyl esters of phosphoric acid or phosphorous acid, C -C alkyl esters of phosphonic and phosphinic acid, such as e.g. trimethyl phosphate, triethyl phosphate, tris (hydroxyethyl) phosphate, Dimethyl phosphate, diethyl phosphite, dipropyl phosphite, Di-isopropyl phosphite, dibutyl phosphite, Methanephosphonic acid dimethyl ester, ethanephosphonic acid diethyl ester, Phosphonopropionic acid trimethyl ester, Cyanäthanphosphonsäuredimethylester, Cyanmethanphosphonsäuredimthylester, Hydroxyethane and Hydroxymethanphosphonsäuredimethy! Ester, 2-Chloräthanphosphonsäuredimethylester, 2-Chloräthanphosphonsäurediethylester, Acetylphosphonsäuredimethylester and diethyl acetylphosphonate and tetramethyl phosphonosuccinate.

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They are used in such quantities that £ after completion of the dyeing process a pH value below "of 7, in particular about 4-5 is present.

As for dyeing the polyester fiber components, if necessary Carriers that are to be used are commercially available carriers, for example trichlorobenzene, o-dichlorobeiizole, methyl cresotionate, Benzoic acid butyl ester, o-phenylphenol, p-phenylphenol called. The carriers are used in the usual amounts for dyeing -JO polyester fibers are added to the dyebath after the dye and salt have been added.

The process is suitable for dyeing yarn and piece on packing and package machines, jet dyeing machines, Reel runners and jigging.

The "procedure is generally carried out as follows: The textile material is placed in a dye bath, which has a pH of about 7-10, preferably 7-9 and 0.01-10 g / l of a fluorotriazinyl and / or fluoropyrimidinyl reactive dye, 0.01 10 g / l of a common disperse dye, 10 - 200 g / l of a common electrolyte such as sodium sulfate or Sodium chloride, 0.1-10 g / l of an acid donor and preferably 0.1-10 g / l of a buffer, in particular a phosphate buffer for a pH range of 7-9 and other common aids, for example 1-8 contains g / l of a carrier. The dye bath is inside

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of 1 - 2 hours 30 to 40 ⁰ C to 95 - 130 ⁰ C and warmed 1/2 - dyed for 1 hour at this temperature.

Suitable buffer systems are, for example, trisodium phosphate-monosodium dihydrogen phosphate or disodium hydrogen phosphate.

In the present method, the reactive dye is colored in the alkaline range, preferably at pH 7.5 to 9 below 100 ⁰ C. The amount of acid donor is dimensioned such that, after dyeing, the pH of below 7, preferably in the range from 4-5.

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010979

example 1

10Og of a knitted fabric consisting of 50 g of polyester and 50 g of cotton are treated on an HT jet dyeing machine with a liquor that consists of

2.0 g of dye I.

1.0 g of dye II, 90.0 g of anhydrous sodium sulfate 0.5 g monosodium dihydrogen phosphate 1.5 g trisodium phosphate 1.0 g sodium dinaphthylmethanedisulphonic acid 2.0 g monochloroacetic acid 1.0 g sodium hexaphosphate

1.0 g of sodium metanitrobenzenesulfonate and 900.0 grams of water

consists.

The liquor is ^{brought to 130 °} C. in 100 minutes and kept at this temperature for hours.

After the usual rinsing and boiling soap, a clear blue coloration with good fastness properties is obtained.

Example 2

100 g of a mixed yarn consisting of 67 g polyester and 33 g rayon are treated with a dye liquor, which from

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2.0 g of dye III

2.0 g of dye IV
60.0 g anhydrous sodium sulfate 0.5 g monosodium dihydrogen phosphate 1.5 g trisodium phosphate

1.0 g sodium dinaphthyl ethane disulfonate 2.0 g of triethyl phosphorate, 1.0 g of sodium hexaphosphate

5.0 g sodium metanitrobenzenesulfonate 925.0 g of water

consists.

The liquor is brought to 130 ° C in 100 minutes and Maintained at this temperature for 1 hour.

Carry the usual rinsing and a 10-minute soaps at 110 ⁰ C using an anionic detergent customary in practice to obtain a clear red dyeing having good fastness properties.

Example 3

100 g of a knitted fabric consisting of 50 g of polyester and 50 g of mercerized cotton are left on for 45 minutes treated a HT tree dyeing machine with a liquor that consists of

3.0 g of dye V
1.0g of the dye VI

100.0 g sodium sulfate anhydrous 10.0 g disodium hydrogen phosphate

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1.0 g sodium metanitrobenzene sulfate 1.0 g sodium hexaphosphate 1.0 g sodium lauryl sulfate, 1.0 g methylphosphonic acid dimethyl ester 882.0 grams of water

consists.

The liquor is brought to 130 ° C. in 100 minutes and kept at this temperature for 1 hour.

After the usual rinsing and soaping using a customary, anion-active detergent a clear yellow coloration with good fastness properties.

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OH O NH

NH ₂ O OH

O NH

SO ₃ Na

^Na0 3 ^S O NH

^cl

Cl

SO ₃ Na HO HN - CO -f \ -m τ, ι (HN = N ^ V ^ V

NaO ₃ S

SO ₃ Na

O ₂ N - / ~ ^> _ N = N CN

V- N ^ CH ₂ -CH ₂ -O-CO-CH ₃ CH ₂ -CH ₂ -O-CO-CH ₃

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Sf-

40-

NH-CONHp Cl

NaSO, - // VN = N SO ₃ Na

N = N VH_N = N -A \> - OH

CH,

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Claims (4)

30 G979 -vs- patent claims 1) Process for one-bath, one-step dyeing of polyester / cellulose fiber mixtures using the exhaust process, characterized in that a dyebath is used which, in addition to a disperse dye a reactive dye with a fluorotriazinyl or fluoropyrimidinyl group and Contains 0.1 - 5 g / l of an acid dispenser that is effective at dyeing temperature. 2) Method according to claim 1, characterized in that dye liquors are used which have an initial pH value from 7-10 preferably from 7-9 and a final pH of 4-5. 3) Process according to Claims 1 to 2, characterized in that the acid donor used is halogen-containing organic compounds, especially sodium salts of halocarboxylic acids or their amides; Lactones; water-soluble esters or half esters of sulfuric acid, phosic acid, phosphorous acids, phosphonic acid and phosphinic acid are used. 4) Process according to claims 1-3, characterized in that 0.1-5 g / l of an alkali metal phosphate buffer used. Le A 20 255 130040/0312