JPS5846594B2 - staining method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides dyeing of fiber mixtures of cellulose and polyester fibers in one step from a single dye bath containing electrolytes by the exhaustion method using reactive dyes and disperse dyes. a reactive dye having a fluorotriazinyl group and/or a fluorohymidinyl group and an acid donor effective at the dyeing temperature of 0.1 to 59/l;
Provided is a method characterized in that it uses a dye bath containing.

Possible reactive dyes are, in particular, organic dyes of the anthraquinone, azo and phthalocyanine series containing monofluoro-8-triazinyl groups, in particular those containing further substituents on the triazine ring, such as ether or thioether groups or, in particular, , containing optionally substituted amino groups, or fluoropyrimidine dyes, especially those containing difluorochloropyrimidinyl groups.

A number of such dyes are described, for example, in United Kingdom Patent Specification Nos. 1169245, 1188606 and 15
No. 26840.

The acid donor used is water-soluble and releases acid groups in particular in the temperature range from 60 to 100°C, thus changing the pH value of the initially neutral to slightly alkaline dye bath into the acid range.
Preferably it is an organic or inorganic acid derivative which is brought to a pH of 4 to 5 during the dyeing process.

Suitable acid donors that may be mentioned are:
Alkali metal salts of halogenocarboxylic acids and amides thereof such as sodium monochloroacetate, sodium dichloroacetate, sodium 3-chloropropionate and monochloroacetamide; lactones such as butyrolactone; lauryl sulfate, hexadecyl sulfonate or Octadecyl sulfate, and preferably halfesters of sulfuric acid, such as 2-ethylhexyl sulfate and butyl sulfate, and sulfuric esters of oxyethylated and oxypropylated alcohols, such as butyl glycol sulfate and butyl diglycol sulfate. ,
and also examples evatrimethyl phosphate, triethyl phosphate, tris(hydroxyethyl) phosphate, dimethyl phosphite, diethyl phosphite, dipropyl phosphite, di-isopropyl phosphite, dibutyl phosphite, dimethylmethanephosphonate, diethylethanephosphonate, Trimethylphosphonopropionate, dimethylcyanoethanephosphonate, dimethylcyanomethanephosphonate, dimethylhydroxyethanephosphonate or hydroxymethanephosphonate, dimethyl 2-chloroethanephosphonate, dimethyl 2-chloroethanephosphonate, dimethylacetylphosphonate, diethylacetylphosphonate and tetramethylphosphono C1-C4 alkyl esters of phosphoric acid or ring phosphoric acid such as succinate, and C1-C4 alkyl esters of phosphonic acid or phosphinic acid.

The acid donor is used in such an amount that the pH value is less than 7, in particular about 4 to 5, at the end of the dyeing process.

Possible carriers which should optionally also be used for dyeing polyester fiber parts are commercially available carriers.

Examples that may be mentioned are trichlorobenzene, O-dichlorobenzene, methyl cresotate, butyl benzoate, O-phenylphenol and p-phenylphenol.

The carrier is used in the amounts customary in the dyeing of polyester fibers and is added to the dye bath after the dye and salt have been introduced.

The method according to the invention is suitable for dyeing yarns and fabrics on package dyeing machines and cheese dyeing machines, jet dyeing machines, wince dyeing machines and jigger dyeing machines.

The process according to the invention is generally carried out as follows: having a pH of about 7 to 10, preferably 7 to 9, and having a fluorotriazinyl and/or fluoropiIJ minonyl reactive dye 0.01 to 10'if/ l, normal disperse dye 0.01 to 10? /l, common electrolytes such as sodium sulfate or sodium chloride 10-200z
/l, acid donor 0.1-10? /l and preferably a buffer, especially a phosphate buffer for the pH range 7 to 9, from 0.1 to 10? /li, as well as other customary auxiliaries,
The textile material is placed in a dye bath containing, for example, 1 to 81/l of carrier.

Heat the dye bath from 30-40°C to 95-130°C for 1-2 hours, and dye at this temperature by 1/2.
Do this for 1 to 1 hour.

Examples of suitable buffer systems are trisodium phosphate/sodium dihydrogen phosphate or disodium hydrogen phosphate.

In the method according to the invention, dyeing with reactive dyes is carried out in 1. Alkaline region, preferably pH 7.5 to 9
The test is carried out at a temperature of 100°C or lower.

The amount of acid donor is such that the pH value is 7 or less when staining is finished;
It is preferably calculated to be within the range of 4 to 5.

Example 1 Knitted fabric 10 made of 50ff polyester and 50r cotton
0g on a high-temperature jet dyeing machine, dye ■2.0g, dye n1. OP, anhydrous sodium sulfate 90.0P, sodium dihydrogen phosphate 0.5f, trisodium phosphate 1.5
1. Sodium dinaphthylmethane disulfonate 1.1
', 2.0 g of monochloroacetic acid, 1.0 g of sodium hexaphosphate? , sodium m-nitrobenzenesulfonate 1.0P and water 900.0P. Of temperature 30
Treat with a solution at ℃.

The solution is raised to 130° C. over 100 minutes and kept at this temperature for 1 hour.

After normal rinsing and washing under boiling, a transparent blue dyeing with good fastness properties is obtained.

Example 2 A mixed system 100P consisting of 67g of polyester and 331g of viscose silk was mixed with dye 1112. l', dye IV2
．． OP, anhydrous sodium sulfate 60. (1, Sodium dihydrogen phosphate 0.5y, Trisodium phosphate 1.5i, Sodium dinaphthylmethane disulfonate 1.Oz, Triethyl phosphate 2.OS', Sodium hexaphosphate 1.01, Sodium m-nitrobenzene sulfonate E) Treat with a staining solution consisting of 5.0P, water 925, and Or at a temperature of 30°C.

The solution is raised to 130°C over 100 minutes and kept at that temperature for 1 hour.

Regular rinsing and 10 minutes at 110°C.
In fact, after washing with regular anionic detergent,
A transparent red dyeing with good fastness properties is obtained.

Example 3 Do*
100 r of knitted fabric consisting of polyester 5M' and polished cotton 5 (1) was mixed with dye v3.1', dye ■1.0♂, anhydrous sodium sulfate 100. (1, sodium hydrogen phosphate 10. (1, sodium m-nitrobenzenesulfonate) 1.0P, sodium hexaphosphate 1.0P,
Treat with a solution consisting of 1.01 ml of sodium lauryl sulfate, 1.01 ml of dimethylmethanephosphonate and 882.0 y of water at 75° C. for 45 minutes on a hot beam dyer.

The solution is raised to 130° C. over 55 minutes and kept at this temperature for 1 hour.

After normal rinsing and washing with practically normal anionic detergents, a clear yellow dyeing with good fastness properties is obtained.

Claims (1)

[Claims] 1. A method for dyeing a polyester fiber/cellulose fiber mixture in one step from a single bath by an exhaustion method, in which, in addition to a disperse dye, a reactive dye having a fluorotriazinyl or fluoropyrimidinyl group and a A process characterized in that a dye bath containing 0.1 to 5 t/l of acid donor effective at the dyeing temperature is used. 2. Process according to claim 1, comprising using a dye liquor having an initial pH value of 7 to 10, preferably 7 to 9 and a final pH value of 4 to 5. 3.Organic compounds containing rogenocarboxylic acids, especially sodium salts of rogenocarboxylic acids or amides thereof; lactones; or water-soluble esters or semi-acids of sulfuric acid, phosphoric acid, phosphorous acid, phosphonic acid or phosphinic acid. consisting of using an ester as an acid donor,
A method according to any one of claims 1 to 2. 4 Alkali metal phosphate buffer 0.1 to 5? /
4. A method according to any one of claims 1 to 3, comprising using l.