JPS5831185A - Enhancement of dyeing fastness - 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 relates to a method for improving the color fastness of dyed products that have been dyed with reactive dyes.

Dyeed products using reactive dyes have vivid colors and excellent wet fastness, so in recent years reactive dyes have been increasingly used to dye cellulose fibers instead of direct dyes. It has become.

However, there is a problem with acid hydrolysis resistance (change over time) regarding the dye fastness of dyed products using reactive dyes.

During dyeing, reactive dyes form covalent bonds with fibers and form strong pressure bonds, but over time after dyeing, these bonds are broken due to the influence of acidic substances, resulting in the dye falling off. , appearing as contamination on other clothing.

As a countermeasure to this problem, the dyed product is treated with a dilute aqueous solution of a specific polyamine after dyeing, and this method has been shown to be quite effective.

However, with such polyamine treatment, even if so-called aging changes can be prevented, the following new problems often occur.

(b) The hue of the dyed material changes due to processing.

(b) The light fastness of the dyed product decreases due to the treatment.

(−→ The treatment reduces the wear resistance of the dyed product.

For dye fixing agents used for the purpose of preventing deterioration over time, it is desirable that these alignments be kept to a minimum.

The dye fixing agents currently being developed have any of the above-mentioned drawbacks, and in particular, the salt hardening resistance is greatly reduced.

This problem appears as a phenomenon in which the dye is oxidized by the action of chlorine contained in tap water when the dyed product is washed, causing the dyed product to discolor or fade.

In view of the current situation, the present inventors have conducted intensive research with the aim of developing a dye fixing method that minimizes the above-mentioned alignment while maintaining blood acid hydrolyzability.

As a result, the formula % formula % (wherein R is selected from the group consisting of ■, an alkyl group having 1 to 6 carbon atoms, a benzyl group, and X is Cj,
Br, NO3, /2 H2EI04 + /3
It has been discovered that a polyamine consisting of monomer units selected from the group consisting of H3PO4 has the ability to achieve the above object.

That is, the present invention relates to a method for improving the color fastness of a dyed product dyed using a reactive dye, which comprises treating the dyed product with the polyamine described above. It is something.

The acid hydrolysis resistance of dyed products treated with the polyamine of the present invention is excellent, and the original purpose of the dye fixing agent can be fully achieved. Furthermore, no discoloration, decrease in light fastness, or decrease in chlorine fastness due to treatment was observed in #1, and it can be said that the performance was greatly improved compared to conventional polyamine treatment.

In addition, fastness to water, fastness to washing,
It also has good performance in terms of fastness to sweat.

The polyamine used in the present invention can be obtained by polymerizing the monoallylamine conductor barrier represented by the following formula (wherein R is selected from the group consisting of H, an alkyl group having 1 to 6 carbon atoms, and a benzyl group). It is easily dissolved in water.

Regarding the synthesis method of these molecules, see
b+ E co Enp++-+e Hvn )1
8, p. 1957. This method is a method in which monoallylamine is polymerized in the presence of phosphoric acid using hydrogen peroxide as a catalyst.

There is no particular limitation on the method of treating dyed products using the polyamine according to the present invention, and conventionally known methods can be used as appropriate.

For example, the dyed material to be treated may be immersed in an aqueous solution containing 2 to 2.0 weight percent of the polyamine dissolved in the fiber for a predetermined period of time, then washed with water and dried.

The bath ratio is usually 1:10 to 20, the treatment temperature is usually room temperature to 80°C, and the treatment time is usually 5 to 20 minutes.

In order to clarify the present invention, examples are given of the treatment of dyed articles with the boria gun of the present invention and the results thereof.

Example 1 The polyamine used in this example is as follows.

Allylamine phosphate polymer (abbreviated as P(AA), same hereinafter) Methylallylamine I [P(MAA)] Ethylally, Ruamine p (P(FAA)) n-Propylarlylamine t; (P(FAA)) n-butyl Allylamine I (P(Bi2) ) Dimethylallylamine I/ (P (DMAA) ,) These polyamines were synthesized according to the method described in the aforementioned Bisocomolecular Soedinenia, Vol. 18, p. 1957.

First, prepare a 0.075% aqueous solution of each polymer,
Next, use the following reactive dye to dye at a concentration of 4% (relative to fiber weight).
The dyed cloth was dyed in a holimer aqueous solution at a bath ratio of 1:20.
After being immersed at a temperature of 40° C. for 20 minutes, it was air-dried. The dye used was Revafix Golden manufactured by Bayer.
Yellow E-G (Levafix Golden Ye
llovr E-G (product name)], Levafix Brilliant Red E-4B (Levaf4x B
r1lli, ant Red Fi ” 4 B (product name)], Revafix Pu/I/-E-3R (L
evafixBlue Fi-3R (trade name)].

Next, the acid hydrolysis resistance of this treated dyed fabric was examined using the following method and compared with that of an untreated dyed fabric. 10g of lactic acid on the test piece
After immersing the sample in a solution of 1/1, the sample was squeezed to a squeezing rate of 80 cm using a squeezing machine and dried at 120°C for 4 minutes. Once the test piece was dry, it was sandwiched between two attached white cloths (silk and cotton) to produce a rough-coated composite test piece. Thereafter, a test was conducted according to the water fastness test method (JIs7L-0846).

The results are shown in Table 1. In the case of untreated dyed fabrics, considerable staining was observed on the attached white cloth in the case of any dye, but when treated with the polymer according to the present invention, almost no staining on the attached white cloth was observed. Ta.

Table 1 Acid hydrolysis resistance Example 2 A 0.075% aqueous solution of each of the polymers used in Example 1 was prepared, and a dyed cloth (dye concentration 2 to 4 weight t% of fiber) dyed by the dip method was added to the polymer aqueous solution. , bath ratio 20, temperature 4
It was immersed at 0° C. for 20 minutes, washed with water, and temporarily dried. The dye used was Remazol Turquoise Sol-G manufactured by Hoechst.
I:, Remt5. zolTurquoise B
lue G (product name)], Remazol Black B (
Remazol Black B (product name)], Rebafix Brilliant Red m- manufactured by Bayer
It is 4B. Next, apply this treated cloth to J-K5-L-0842.
A 20-hour light resistance test was conducted using a Hue P meter using the method described above.

The results are shown in Table 2, and it can be seen that no decrease in light fastness was observed in the samples treated with the polymer according to the present invention.

Table 2 Light Fastness Example 6 A 0.075% aqueous solution of the polyamine of Example 1 was prepared and a dyed fabric was treated in the same manner as in Example 1.

The dye used here was Remazol Black B (Rem
azol Black B (product name)], Remazol Golden I x o -G (Remazol Gol
den YellowG (product name)], Revafix Sol-! ! -3R (Levafix Blue B
-3R (product name)].

Next, the chlorine fastness of this treated dyed fabric was examined using the following two methods.

Method 1: PI (8
, 0 ± 0.2 buffer solution with a bath ratio of 1:
100), and was subjected to a washing test machine of J Engineering 5-L-0821 at 25°C for 2 hours. Thereafter, it was washed under running water for 5 minutes and dehydrated and dried.

Method 2: The test piece was placed in a household washing machine and washed continuously at room temperature with 60% tap water (Tokyo) at an inflow rate of 61/min.

The results are shown in Table 3. According to method 1, a remarkable increase in chlorine fastness of untreated dyed fabrics is observed.

A tendency for the chlorine fastness to increase is also observed in Method 2. This is in contrast to the fact that when treated with a commercially available dye fixative, the chlorine fastness of the untreated sample is significantly reduced.

Procedural amendment document October 1980 211 Commissioner of the Japan Patent Office 1, Indication of the case Patent Application No. 128323 of 1983 2, Name of the invention Method for improving dyeing fastness 3, Person making the amendment Relationship with the case Residence of the patent applicant Tokoro Name (397) Nittobo Co., Ltd. (Name) 4. Agent Showa Month/Date 6. Number of inventions increased by amendment 7. Column for detailed explanation of the invention in the specification to be amended (1) Details On page 5 of the book, lines 11 and 12, "using water peroxide as a catalyst" is corrected to "radiation by irradiating with gamma rays."

Claims (1)

[Claims] A dyed product dyed with a reactive dye can be prepared by dyeing with the formula % (wherein R is selected from the group consisting of an alkyl group having 1 to 6 H1 carbon atoms and a benzyl group). , X is CJ, ,
Br, NO3, /2H2SO4, /3H3PO
(selected from the group consisting of 4) consisting of a monomer unit represented by ? A method for improving the color fastness of dyed products, which is characterized by treatment using reamin.