KR820002253B1 - Process for dyeing polyester fibers or fibers mixtures containing them - Google Patents

Abstract

Polyester and polyester bledn textiles were dyed level shades with no foaming or fabric wrinkling or folding by aq. baths contg. disperse dyes and optionally other dyes, lecithins 10-50, I(R = C11-21 alkyl or alkeny1, n = 4-12)5-40, II(R = C12-20 alkyl or alkenyl, n =10-30)5-40, and an alkanol, qlycol, or eher 0-20%.

Description

"Method for dyeing polyester fibers or textile fabrics containing them"

The present invention relates to (a) lecidin 10 to 50%, (b) oxyethylated carboxylic acid 5 to 40% of formula (I), and (c) oxyethylated alcohol of formula (II) 5 to 40% (d) alkanols having 1 to 3 carbon atoms, glycols having 2 to 4 carbon atoms or alkyl ethers having 1 to 4 carbon atoms, or diethylene glycol, triethylene glycol or tetraethylene glycol or 1 to 4 carbon atoms A waterborne agent containing 0 to 20% of these alkyl ethers, and relates to a method of dyeing woven and knitted fabrics of polyester fibers or fibers containing polyester fibers with a disperse dye in an aqueous solution at a temperature of 95 to 140 ° C.

In the following general formula,

R is a saturated or unsaturated alkyl group having 11 to 21 carbon atoms

R 'is a saturated or unsaturated alkyl group having 12 to 20 carbon atoms

n is 4 to 12 and m is 10 to 30.

Lecidines that can be used are known products isolated from animal or vegetable organic compounds, in particular soiarecidin.

Examples of the oxymethylated carboxylic acids of the general formula (I) mentioned above are oxyethylated palmitic acid, stearic acid and bihenic acid, in particular oxyethylated oleethyl acid, linoleic acid and linolenic acid. Rate is unsubstituted acid.

Examples of the oxyethylated alcohol of the general formula (II) are oxyethylated palmityl alcohol or stearyl alcohol, in particular oxyethylated oleyl alcohol. Suitable alcohols for the group (d) are methanol, ethanol, in particular ospropanol.

Examples of the aforementioned polyester fibers are polyethylene glycol terephthalate, poly-1,4-bis (hydroxymethyl) -cyclohexane terephthalate and poly-p-hydroxyethoxy-benzoate; Blend fabrics polyester / wool blend fabrics, polyester / viscose staple blend fabrics or polyester / cotton blend fabrics which may contain polyester fibers.

The amount used of the preparations according to the invention may vary within limited limits. In other words, a suitable amount can be determined by preliminary experiments. In general, 0.3 to 6 g per liter of saline is suitable.

In addition to dyes and dyes suitable for the above-mentioned formulations, the salt bath may contain commercially available carriers, salts (eg sodium acetate) and acids such as acetic acid or sulfuric acid. It is possible to effectively dye the blended fabric in a conventional manner in a dyeing apparatus which is opened and closed at 90 to 110 ° C. of the discharging process, or particularly at high temperatures (120 to 140 °).

Until a few years ago, woven and knitted fabrics of polyester fibers or of fibers containing polyester fibers were dyed on a boiling point open winch vat and added a carrier. Due to the improved machinery, it is possible today to dye such articles in closed dyeing machines at elevated temperatures. However, the high cost of carriers prevents them from being reduced or completely saved as much as possible.

Dyed fabrics and knitted fabrics run in the form of low offs on the above mentioned closed dyeing machinery. As a result of this, they are also relatively hot dyed, so they are particularly layered and wrinkled. For this reason, softeners and spindle agents are often used to prevent such layers and wrinkles. However, softeners and spindles must be relatively stable at high temperature dyeing; Moreover, they should not interfere with the stability of dye dispersion.

Moreover, it is also suitable to use homogeneous sprinkles when dyeing polyester fibers under high temperature conditions. Conventional homogenizing agents are oxyethylated products having a foaming property by vigorous stirring of the liquid. Severe bubble formation can cause difficulties when dyeing pieces of fabric in a low-off form, ie entangled with each other, and also pulls the article. This causes cutting of the article and also makes the article non-uniform.

The formulations according to the invention are very excellent and excellent enough to meet the needs when dyeing woven and knitted fabrics of polyester fibers or blended yarns containing polyester fibers. In addition, the preparation according to the present invention eliminates foaming and has a leveling action, increases stability in dispersion and prevents layering and wrinkle formation.

Example 1

Woven weft tissue fabric consisting of a blend of 55 parts of polyester fibers and 45 parts of wool is dyed on a Jet-dyeing apparatus with a liquid ratio of 1:20. As with the conventional dyes used for dyeing polyester and wool, the liquid contains the following adducts. Ie 0.2 g / l of soia lecidine, 0.1 g / l of oleic acid hexaglycol ester, 0.1 g / l of oleylpolyglycol ether oxyethylated with 20 mol of ethylene oxide, 2 g / l of commercially available carrier Acetin acid is required to control the acidification of the solution. Dyeing starts at 60 ° C. After the minimum time, the temperature of the salt bath is raised to 106 ° C. for 60 minutes and held at this temperature for 45 to 60 minutes. Despite the vigorous stirring of this solution, no foaming occurs during dyeing. At the end of dyeing, the dye bath is cooled, the fabric is rinsed, drained and then dehydrated. A uniformly dyed fabric is obtained without layers and wrinkles.

Similar good results can be achieved if oleic acid octaglycol esters or decaglycol esters or linoleic acid hexaglycol esters, octaglycol esters or decaglycol esters are used in place of oleic acid hexaglycol esters.

Instead of 20 moles of oleyl polyglycol ether and ethylene oxide, a reaction product of palmityl alcohol with 15 moles of ethylene oxide, stearyl alcohol and 30 moles of ethylene oxide and 30 moles of ethylene oxide is preferred. Can be used.

Example 2

Knitted fabrics of wet-spun polyester fibers are dyed on an incompletely flooded jet-dyeing machine at 1:15. As with the conventional disperse dyes used for dyeing, the solution is 0.25 g / l of soia lecidin, 0.12 g / l of oleic acid hexaglycol ester, 0.12 g / l of oleyl polyglycol ether oxyethylated with 20 moles of ethylene oxide It contains 2 g / L sodium dihydrogen phosphate and the amount of acetic acid is needed to control the acidification of the liquid. Dyeing starts at 70 ° C. After the initial time, the temperature of the bath is raised to 125 ° C. in 30 minutes. The fabric is passed through a dyeing machine while dyeing at 125 ° C. for 30 minutes. It can be seen through the inspection glass that the liquid leaving the jet has no bubbles at all. At the end of the dyeing, the bath is cooled to 100 ° C or below. Rinse, drain and drain the fabric. This results in a fabric that is uniformly dyed and free of layers or wrinkles.

Claims (1)

10 to 5% of lecidine, 5 to 40% of oxyethylated carboxylic acid of the following general formula (I), 5 to 40% of oxyethylated alcohol of the following general formula (II), alkanol having 1 to 3 carbon atoms Aqueous formulations containing 0 to 20% of a C 2-4 glycol or a C1-4 alkyl ether, or diethylene glycol, triethylene glycol or tetraethylene glycol or a C1-4 alkyl ether thereof A method of dyeing a woven fabric and knitted fabric of a polyester fiber or a fiber containing a polyester fiber in an aqueous solution at 95 to 140 ° C with a disperse dye.

In the general formula, R is a saturated or unsaturated alkyl group having 11 to 21 carbon atoms. R 'is a saturated or unsaturated alkyl group having 12 to 20 carbon atoms n is 4 to 12 m is 10 to 30.