SU615111A1 - Active disazo dyes for polyamide fibres - Google Patents

Description

The ogenefaction isobrigue to the region of obtaining azo-dyes, in particular, active disiao-dyes for polyamide polymers .....

Active monoazo dyes for polyamide fibers are known, containing of the active group -6O2NH (CH2) ° C of general formula 1

 hydrogen, chlorine

 oxyegil or / b - cyanethyl /

1 rt-y-hydroxyethyl yl / jj - chlorine / 5 5

propyl

Dyes dye polyamide fibers in yellow-red rutting with good color scores.

The disadvantage of the known & &dquo; 20 colors are narrow color gamma and insufficient light fastness, which is our standard definition standard for 3-4 6salls 1. Known also used at present in the practice of polyamide 25

materials dispersed aaoKpacHTenHi of the general formula 1b.

Nn

where T J. - chlorate 2 - chlorine, hydrogen T methyl group, hydrogen; T - groups are hydroxyethal or ethyl; T C - | OXV Ethyl Group. Known dyes dyed polyamide fibers in the colors of cinnamon & bordeaux and phiopeg fibers. The disadvantage of the known dispersed aaocr Segelaya Rd EgS is unprecedented, where T is IT, hydrogen, hydrogen or methyl, J-JE-oxyethyl or D-dianethyl, H - 1d - ox 1Text1 igsh) 5-hpor - | 5-sypropyl -. The preparatory dye dyes polyamide fibers in the colors Bordeaux, Red-brown, dark-purple, i.e. they have a wide color range. In addition, the colorings obtained are different - 1RaBY lightfastness (5-6 points; resistant to wet processing (5/5 points) and sweat (5/5 points). The indicated disazo dyes are obtained by diazotization 4 - (/ chlorobutyl sulfate with a fresh color (3 -4 points) and low stability during wet treatments (3-4 points). Active disazo dyes of the general formula сNN cNз; K2) aniline or its derivatives of the general formula CiCH CHgNHOg and subsequent combination with m-topuidin are proposed. tiate and then cit E-site with K, K-di- (jb -oxyethyl) -m-toluidine or M- ((5-cyanoethyl) rN - (Jf-chloro-fboxy-n-propyl) aniline. The resulting dyes have a high degree of fixation (about 90% ), good resistance to light and wet treatments.

ClCH2tH2NH02 $

SNASHGON

(iHgCHgOH 1.66 g of 4 (|) -chloroethylsulfonamide) acetic anilide is hydrolyzed in 15 ml of 15% hydrochloric acid for 1 hour while the resulting 4- (η-chloroethylsupamido) hydrochloride solution of aniline is cooled to 3 ° C, and the hydrochloride precipitates. At 3-5 C, 0.42 g of NO nitrite is added to this suspension. in the form of a 20% solution and stirred for 30 minutes. Under stirring, a hydrochloric acid solution of 0.65 g of m-toluidine is poured into the diazo solution, and a yellow precipitate of aminomone azo dye is precipitated. The reaction mass is neutralized with a solution of soda to a pH of 4.5, the precipitate is filtered off, washed with water, dried and obtain 1.26 gaminomonoazobrasitel, yield 60%, so pl. 123-124 С (from diluted alcohol). 1.2 g of the aminomonoazo dye at 4 ° C are dissolved in a mixture of 10 ml of glacial hydroxy CHgCH2NH02 $ acid and 10 ml of 20% hydrochloric acid, cooled to 25 ° C and 0.25 g of sodium nitrite in the form of a concentrated solution is poured and stirred for 1 hour. A solution of 0.68 g of t, K-DI- (5-hydroxyethyl) -m-toluidine in 5 ml of 10 9 (rn hydrochloric acid, stirred for 3 h , the reaction mass is diluted with water, the precipitate is filtered off, washed with water and dried to obtain 1.5 g of active disagrant dye, yield 78.5%, mp 183-184 ° C (from alcohol). Found:% CE 6, 11, 6.18; N14.36, 14.61; -5 5.27, cr NzAsen Oz Calculated,%: Cu 6.36; N / 15.01; S 5.73. Dyes polyamide fibers in red-brown color. EXAMPLE 2 CHgCHgOH СНзСНгОН 6, 1 g of 4- (D-hporegipsulfamido) -2-chloro-aceganipide is stirred in 50 ml of 20% hydrochloric acid, heated to and stirred for 2 hours at this temperature until fully cooked. The resulting 4- (chloroylsulfonamide) pac-extract 4 -chloroaniline is cooled to 1-2 ° C and 1.38 g of sodium nitrite is diazotized in the form of a 2O% aqueous solution, transferred. 1 at 2 C and filtered from a small amount of impurities. 10 ml of a hydrochloric acid solution of 2.14 g of m-tgoluidine are poured into the digestion of diazapreidine, diluted with water and stirred for 2 hours at 2-5 ° C. The precipitate is dredged, washed with water and dried. 5.2 g of aminomonazo dye are obtained, yield 7-7%, mp. 141-142 ° С (from dilute alcohol). 2 g of the obtained aminomonazo-dyes are dissolved in a mixture of 10 ml of ice (lCH2 IHaNHOg $ 2 g of the aminomonazorasite obtained in Example 2, are diazotized and combined with 1 | 2 (p-cyanoethyl) -K- (| -chloro - / & hydroxy-n-propyl) aniline, -dilution of the water is stirred for 2 hours at 5 ° C, the precipitate is washed with water and dried. 2.5 g of active disazocrasit are obtained, yield 76%, mp. (from diluted alcohol ). Found;%; C1 15.90; 16.2i; N 14.94; 15.13. Q H gClgVyO S. Calculated,%: se 16.70; N 15.35. Dyes polyamide fibers in red-brown color. Similarly get active disaabo dyes With the use of m-toluidine as an intermediate component, listed in Table 1. acetic acid and 10 ml of 2O% hydrochloric acid at 40 s, cooled to 25 ° C, 0.36 g of sodium nitrite are diazotized in the form of 20% the solution is stirred for 1 hour at 25 ° C. and filtered from impurities.Oh is added to the diazo solution, 98 g of yN-di - (amp -oxyegil) -m-toluidine 7.5 ml of 10% hydrochloric acid, stirred 1 h at room temperature, the precipitate is filtered off, washed with water and dried. Get 2.2 g of active disazokrasitel, yield 72%, T.PL. 181-182 ° (from chlorobenzene). Found,%: N 13.73, 13.91) Gj HjoCl N O S Vyhaisleno,%: 14.15. Dyes polyamide fibers in burgundy color, EXAMPLE 3. CHa l-HgCN / CHgCiHOHdHg Ci Dyes intensively dye synthetic polyamide fibers with good indicators of durability to light (5-6 points), excellent indicators of durability to wet treatments and high degree of fixation on the fiber. A comparison of the dyeing properties and color stability on polyamide fiber of the proposed and known disperse dyes is given in Table. 2. Resistance to sublimation, and the equalizing (even) ability of the proposed dyes is good. Thus, the proposed disabsorbents have a significantly better light resistance, and the presence of groups capable of forming covalent bonds with the fiber during dyeing significantly increases their resistance to wet treatments and sublimation. Table

4- (| L-chloroethylsulfamido) -V- (ft-cyanoethyl) -aniline., N- (J-chloro-ftboard

- hydroxy-№-1fopil) anisperse Bordeaux with

Bordeaux 2C bluish tint

CiСНз

K (MSNGON) nd

Ogk

Continuation of table 1

Table 2

4/4/4

4/4 / 4-5

4/3/4 910

where T is hydrogen, chlorine, Sources of information taken in

, attention when examining:

.Cd - hydrogen or megyl; Patent of England No. 1339381,

Ra- / b - hydroxyelene or / 2 - cyanoegil; 1972.

T. hydroxyegil kpc chloro-A-hydroxy- 5 Use of Krasigepey- M., Easy inpropyl for polyamide fibers, 1971, p. 198-2OO.

-615111

2. Melnikov B.N., Moryganov P.V.