JPS58132181A - Dyeing of polyester fiber base material - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides polyester fiber materials, particularly automobile interior materials,
When dyeing textile products that require extremely high light fastness, such as Inchiriya materials, the light fastness of orange or blue-red dyed products is improved by blending specific azo dyes with specific anthraquinone thread red dyes. This is related to how to do this.

Traditionally, synthetic leather has been primarily used as an interior material for automobiles, but colorful textile products have come into widespread use as luxury and fashion have become more popular.

Currently, nylon is the main fiber material, but as polyester fibers become cheaper, there is an increasing preference for polyester fibers. However, quality requirements for these interior cord products are strict, and each automobile manufacturer has established its own quality standards, which are particularly strict regarding light fastness. This light fastness standard differs slightly depending on each automobile manufacturer, but it was generally determined to be grade 3-4 on a gray scale for discoloration and fading after 100 hours of irradiation with a fade meter (black pile temperature 63 degrees Celsius). Ta. However, since then, the standards have become even stricter due to the strengthening of self-regulation by each automobile manufacturer, and the black panel temperature has been increased to 8.
3℃, and when actually molding the sheet, the urethane foam l[chi], so when measuring the light fastness,
The irradiation time is now more than 200 hours, and it has become common for measurements to be made using urethane foam as the lining.Especially for exports to the Middle East, etc., irradiation is performed at 83℃ for 400 hours, resulting in a discoloration and fading gray scale of 3-3. Level 4 or above is said to be required. Furthermore, the flame-retardant treatment that has traditionally been applied to cars exported to the United States is now being implemented in Japan as well, due to growing awareness of vehicle fire safety. Generally, light fastness decreases with flame retardant treatment, so in many cases a method is taken to improve light fastness by adding a light fastness improver, but the dye itself is required to be more robust than before. It's starting to look like this.

In general, anthraquinone dyes have excellent light fastness as red dyes, and sufficient fastness can be obtained in ordinary textile kasted products.1 However, according to the fastness measurement method for automobile interiors, it has been tested for 200 hours using a fade meter. When exposed to light for a long time, dyed articles made with anthraquinone red dyes usually turn bluish and the fastness rating decreases. This bluish discoloration tends to be particularly strong in scarlet to red dyed products.

The present inventors have discovered that bluish discoloration can be prevented and light fastness can be improved by blending a specific azo dye with a specific anthraquinone red dye, leading to the present invention. It is surprising that even when the light fastness of the azo dye to be blended is inferior to that of the anthraquinone dye, the fastness of the blended dyed product is improved over both parent dyes.

From a colorimetric perspective, there have been many cases in which the light fastness of a dyed product decreases more than expected when a small amount of a dye with poor light fastness is added. However, it is said that there are cases in which the apparent fastness is improved by blending dyes with very low light fastness, but this is not practical and there are no examples of this with disperse dyes.The present invention This invention has great industrial value because it provides extremely high light resistance and contains an azo dye that is cheaper than anthraquinone red dyes.

Originally, light fastness has a very large element due to chemical structure, but there are also physical factors.
), photobleaching in the dyed state is said to be affected by the interaction between the dye and the fiber, and the interaction between the dye and the dye or auxiliary agent. Generally, the association of dyes changes the light absorption spectrum to a greater or lesser extent. Changes in spectral position and intensity vary depending on the arrangement of molecules within the aggregate, but in general light absorption decreases, and if a large aggregate is formed, the dye molecules wrapped within the aggregate will not be directly exposed to light. Therefore, it is thought that the effective concentration decreases due to light absorption, and light absorption stops.

In the case of the present invention, light fastness is improved due to a complex combination of factors such as the colorimetric changes that appear to cancel each other out, changes in the concentration of dyes in the formulation, and differences in the degree of diffusion of both dyes. It is presumed that the

In addition, in the present invention, even if a yellow dye with excellent light fastness is added as a third component during dyeing, the effect will not change in particular, and it can be used in combination.

Next, the method of the present invention will be specifically explained using Examples. Note that parts in the examples represent parts by weight.

Example 1 4.5 parts of anthraquinone red dye represented by the following formula (
Prepared by atomizing and drying a mixture consisting of 30% dyestuff and 70% anionic activator) and azo dye 1 shown in the formula
．． 1000 containing 5 parts (prepared by atomizing and drying a mixture consisting of 30% dyestuff and 70% anionic activator)
Add 100 parts of polyester fabric to 13 parts of dye dispersion.
High temperature dyeing is carried out at 0° C. for 60 minutes, followed by reduction washing and drying as usual.

Measure the actual dyeing using a fade meter (black pile temperature 83).
℃, urethane foam lining for 200 hours, and judged on the gray scale for discoloration and fading, it was grade 4, and the blue discoloration in the discolored area was very small. - The light fastness of the dyed product dyed using 6 parts of the unconventional dye alone was grade 3-4 on the gray scale for discoloration and fading, and the fading areas were considerably blued.

Example 2 In Example 1, 1.5 parts of the dye of formula 2 (prepared by atomizing and drying a mixture consisting of 30% dyestuff and 70% anionic activator) was used instead of the dye of formula (1). is Example 1
It was carried out in exactly the same manner as described.

The light fastness of the obtained dyed product was grade 4 on the gray scale for discoloration and fading, and the blue discoloration in the fading areas was very small.

Example 3 The same procedure as described in Example 1 was carried out, except that the dye of formula (1) was replaced with the dye of formula (1) (30% dyestuff and 70% anionic activator).

The light fastness of the obtained dyed product was grade 4 on the fading gray scale, and there was little blue discoloration in the fading area.Example 4 In Example 1, the dye of formula 5 parts of the dye of formula (prepared by atomizing and drying a mixture consisting of 25% of the dyestuff and 75% of the anionic activator), 5 parts of the dye of the formula The procedure was carried out in the same manner as described in Example 1, except that 2 parts (prepared by drying) were added.

The light fastness of the obtained dyed product was grade 4 on the fading gray scale, and almost no blue discoloration was observed in the fading areas.

Miketone Polyester Yellow GS with 1.5 parts dye
Dyeing was carried out in the same manner as described in Example 1, except that 1.5 parts of L (manufactured by Mitsui Toatsu Chemical Co., Ltd., C-■・Disverse Yellow 149) was added.

The obtained dyed product was irradiated for 200 hours using a fade meter (black panel temperature: 83° C., urethane foam lining), and when judged on the fading gray scale, it was grade 3-4, and the blue discoloration in the faded areas was very small.

One formula amount of 6 parts of dye and Miketone Polyester Yellow G
The light fastness of dyed products dyed using SL1.5 parts was grade 3 on the gray scale for discoloration and fading, and the fading areas were considerably blued. Patent applicant Mitsui Toatsu Chemical Co., Ltd.

Claims (2)

[Claims] (1) An anthraquinone red dye of formula I (wherein R1 represents an alkyl group or phenyl group that may have a substituent) is added to an anthraquinone red dye of formula II (wherein 2 is a nitro group, a cyano group, or an alkoxycarbonyl group). %XI, X2 may be the same or different, hydrogen, cyano group, halogeno group or alkyl group: 17
Yl represents hydrogen, an alkylbenzoylamine group, an alkylamide group, or a halogeno group, and Y! represents hydrogen or an alkoxy group, R2 and Rs may be the same or different,
Alkyl group 1 cyanoethyl group, cyanoalkoxyalkyl group, alkoxyalkyl group, alkylcarbonyloxyalkyl group, benzyl group, phenoxyethyl group, allyl group, benzoyloxyalkyl group that may have a substituent,
A method for dyeing a polyester fiber material, characterized in that it is carried out by blending an orange, tan, red or blue-red azo dye which is an alkoxycarbonyloxyalkyl group, an alkoxycarbonyloxyalkyl group or a chloropropionyloxyethyl group. 2. Process according to claim 1, characterized in that the dye of formula I is 1-amino-2-(6-hydroxyhexyloxy)-4-hydroxyanthraquinone.