JPS58171450A - Monoazo dye for polyester fiber - Google Patents

Abstract

NEW MATERIAL:The compound of formula I (Z is H or Cl; X is H, Cl, methyl or methoxy; Y is methyl, OH or methoxy; R is lower alkyl). EXAMPLE:The compound of formula II. USE:A dye having excellent resistance to alkali discharging, and capable of dyeing a polyester fiber such as polyethylene terrephthalate fiber or its blend with cotton, silk, wool, etc., in reddish blue - greenish blue color having excellent fastness to light, sublimation and water. PROCESS:The objective compound is prepared by diazotizing the amine of formula III and coupling with the compound of formula IV [e.g. N,N-bis(ethoxycarbonyloxyethyl)-2-methoxy-5-methylaniline].

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a monoazo dye for polyester fibers, and more specifically, the present invention relates to a monoazo dye for polyester fibers. This invention relates to a monoazo dye with excellent alkali discharge resistance that dyes from a reddish background color to a greenish blue color.

The dye according to the present invention has the following general formula (1) (wherein 2 represents a hydrogen atom or a chlorine atom, X represents a hydrogen atom, a chlorine atom, a methyl group, or a methoxy group, and Y represents a methyl group or a hydroxyl group. or a methoxy group, and l represents a lower alkyl group) is a water-insoluble monoazo dye for polyester fibers.

The monoazo dye represented by the general formula (1) shown above is represented by the following formula (1).
) (wherein 2 is the same as defined above) can be produced by diazotizing an amine represented by the formula (2) and coupling it with a compound represented by the following formula (1). [As a coupling component represented by the formula l3.

N,N-bis(ethoxycarbonyloxyethyl)-comethoxy-3-methylaniline N,N-his(ethoxycarbonyloxyethyl)-1,j-dimethoxyaniline N,N-bis(ethoxycarbonyloxyethyl)-1,! -dimethylaniline N,N-bis(ethoxycarbonyloxyethyl)-
-Hydroxy! -Chloroaniline N,N-bis(ethoxycarbonyloxyether)-2-methoxy-! −
Examples include Chloroani IJ 7N, N-bis(ethoxycarbonyloxyethyl)-1-methoxyaniline, and the like.

Fibers that can be dyed with the monoazo dye of the present invention include polyethylene terephthalate, terephthal Ill/,
Examples include polycondensate products such as polycondensates with $-bis-(hydroxymethyl)cyclohexane.

K, which dyes polyester acid m using the dye of the present invention, is dyed using a dispersant such as a condensate of naphthalene sulfonic acid and formaldehyde, higher alcohol Nisdel sulfate, or higher alkylbenzene sulfonate. Dyeing or printing may be carried out by dispersing the dye represented by the general formula [1] in an aqueous medium to prepare a dyeing bath or printing paste.For example, in the case of dyeing, high temperature, dyeing method, carrier dyeing By applying ordinary dyeing methods such as dyeing methods and thermosol dyeing methods, it is possible to dye polyester fibers or their blends and mixed fiber products with excellent fastness. In some cases, even better results may be obtained by adding an acidic substance such as formic acid, acetic acid, phosphoric acid or ammonium sulfate to the dyeing bath.

The monoazo dye of the present invention may be used in combination with dyes of the same type or dyes of other types, and in particular, good results such as improved dyeability can be obtained by combining the dyes represented by the general formula ``White'' with each other. be.

Next, the present invention will be explained in more detail with reference to actual examples.

Example 1 Dye Q! represented by the following structural formula. A dyeing bath was prepared by dispersing f in water containing naphthalene sulfonic acid-formaldehyde condensation, product/) and higher alcohol sulfate ester. 100f of polyester fibers are immersed in this dyeing bath,
30C-'C After dyeing for 40 minutes, so pink, washed with water,
After drying, a vivid blue dyed fabric was obtained.

The light fastness and sublimation fastness of the dyed fabric obtained are I! and water fastness was good.

The dye used in this fruit ring example was produced as follows.

-17f of monoamino-l-nitrotheasole in 1l of phosphoric acid
-1 acetic acid ltwtK was dissolved and diazotized using nitrosyl sulfuric acid at -3°C, and the resulting diazonium salt solution was N,N-bis(ethoxycarbonyloxyethyl)-
Comethoxy 5-methylaniline 2 liters? was added to a solution of 2!0w5tlC in methanol at 0°C, the precipitated dye was collected by filtration, washed with water and dried.
(acetone) was 40711 rm.

A dye dispersion obtained by mixing the dye anfP shown in Example 1 with naphthalene sulfonic acid-formaldehyde condensate JtTh and water dat and grinding the mixture with a sand grinder for 10 hours and a carrier (May Printer!-1! (trademark) ), Meisei Kagaku ■) JP was mixed with 90 fK of mulberry paste to prepare colored paste.

This color paste was printed on a polyester fiber material, and after intermediate drying at 10DC for 2 minutes, it was steamed at TTOC for 7 minutes to fix the dye, and after being subjected to looming, water washing and drying treatment, it was found to be light resistant and sublimation resistant. A dyed cloth of clear blue color with good strength was obtained.

The λ1x (acetone) of this product is A/! It was am.

Example J When a polyester fiber was dyed in the same manner as in Example 1 using a dye represented by the following structural formula, a vivid blue dyed fabric was obtained. The dyed fabric obtained had good light fastness, sublimation fastness, and water fastness.

The dye used in this example was 1 produced according to Example 1.
The λm&X (acetone) of this product was gosam.

EXAMPLE-TEI Polyester fibers were dyed using the dyes shown in the table below in the same manner as in Example 1 to obtain dyed products having the colors shown in the table.

Claims (1)

[Claims] (1) General formula (wherein 2 represents a hydrogen atom or a chlorine atom, X represents a hydrogen atom, a chlorine atom, a methyl group or a methoxy group, Y represents a methyl group, a hydroxyl group or a methoxy group, 11 lower A monoazo dye for polyester fibers represented by ), which represents an alkyl group.