Acid dye composition, use thereof and method using the same for dyeing nylon textiles

Abstract

An acid dye composition for dyeing nylon textiles is disclosed, which comprises: an acid dye; and a water soluble Ca.sup.2+ compound, wherein, on the basis of a total weight of the acid dye as 100 parts by weight, a content of the water soluble Ca.sup.2+ compound is ranged from 0.1 parts by weight to 50 parts by weight. In addition, a use of the aforesaid acid dye composition and a method using the same for dyeing nylon textiles are also disclosed.

Claims

1. An acid dye composition for dyeing nylon textiles, comprising: an acid dye; and a water soluble Ca.sup.2+ compound, wherein, on the basis of a total weight of the acid dye as 100 parts by weight, a content of the water soluble Ca.sup.2+ compound is ranged from 0.1 parts by weight to 50 parts by weight.

2. The acid dye composition of claim 1, wherein a solubility of the water soluble Ca.sup.2+ compound is greater than 20 g per 100 g of water at 20 C.

3. The acid dye composition of claim 1, wherein the water soluble Ca.sup.2+ compound is CaCl.sub.2, Ca(C.sub.2H.sub.3O.sub.2).sub.2, CaSO.sub.4 or a combination thereof.

4. The acid dye composition of claim 3, wherein the water soluble Ca.sup.2+ compound is CaCl.sub.2.

5. The acid dye composition of claim 1, wherein the content of the water soluble Ca.sup.2+ compound is ranged from 5 parts by weight to 30 parts by weight.

6. The acid dye composition of claim 1, wherein the acid dye is Acid Black 172, Acid Black ACE, Acid Yellow 220, Acid Red 315, Acid Blue 317, Acid Blue 113 or a combination thereof.

7. A use of an acid dye composition for dyeing nylon textiles, wherein the acid dye composition comprises: an acid dye; and a water soluble Ca.sup.2+ compound, wherein, on the basis of a total weight of the acid dye as 100 parts by weight, a content of the water soluble Ca.sup.2+ compound is ranged from 0.1 parts by weight to 50 parts by weight.

8. The use of claim 7, wherein a solubility of the water soluble Ca.sup.2+ compound is greater than 20 g per 100 g of water at 20 C.

9. The use of claim 7, wherein the water soluble Ca.sup.2+ compound is CaCl.sub.2, Ca(C.sub.2H.sub.3O.sub.2).sub.2, CaSO.sub.4 or a combination thereof.

10. The use of claim 7, wherein the content of the water soluble Ca.sup.2+ compound is ranged from 5 parts by weight to 30 parts by weight.

11. The use of claim 7, wherein the acid dye is Acid Black 172, Acid Black ACE, Acid Yellow 220, Acid Red 315, Acid Blue 317, Acid Blue 113 or a combination thereof.

12. The use of claim 7, wherein on the basis of a use mount of the nylon textiles as 100 parts by weight, a use amount of the acid dye is ranged from 0.1 parts by weight to 10 parts by weight.

13. The use of claim 7, wherein the nylon textiles are a nylon microfiber substrate.

14. A method for dyeing nylon textiles, comprising the following steps: dyeing nylon textiles with an acid dye composition, wherein the acid dye composition comprises: an acid dye; and a water soluble Ca.sup.2+ compound, wherein, on the basis of a total weight of the acid dye as 100 parts by weight, a content of the water soluble Ca.sup.2+ compound is ranged from 0.1 parts by weight to 50 parts by weight.

15. The method of claim 14, wherein a solubility of the water soluble Ca.sup.2+ compound is greater than 20 g per 100 g of water at 20 C.

16. The method of claim 14, wherein the water soluble Ca.sup.2+ compound is CaCl.sub.2, Ca(C.sub.2H.sub.3O.sub.2).sub.2, CaSO.sub.4 or a combination thereof.

17. The method of claim 14, wherein the content of the water soluble Ca.sup.2+ compound is ranged from 5 parts by weight to 30 parts by weight.

18. The method of claim 14, wherein the acid dye is Acid Black 172, Acid Black ACE, Acid Yellow 220, Acid Red 315, Acid Blue 317, Acid Blue 113 or a combination thereof.

19. The method of claim 14, wherein on the basis of a use mount of the nylon textiles as 100 parts by weight, a use amount of the acid dye is ranged from 0.1 parts by weight to 10 parts by weight.

20. The method of claim 14, wherein the nylon textiles are a nylon microfiber substrate.

Description

DETAILED DESCRIPTION OF EMBODIMENT

[0016] The following embodiments when read with the accompanying drawings are made to clearly exhibit the above-mentioned and other technical contents, features and/or effects of the present disclosure. Through the exposition by means of the specific embodiments, people would further understand the technical means and effects the present disclosure adopts to achieve the above-indicated objectives. Moreover, as the contents disclosed herein should be readily understood and can be implemented by a person skilled in the art, all equivalent changes or modifications which do not depart from the concept of the present disclosure should be encompassed by the appended claims.

[0017] In the following embodiments of the present disclosure, the nylon microfiber textiles are dyed with different acid dye compositions. The steps of the dyeing process, the washing off process and the examination process are briefly illustrated below.

[0018] Dyeing Process

[0019] An acid dye with a weight percentage corresponding to the nylon textiles to be dyed (% o.w.f.) and a buffer solution with pH5 were placed in a dyeing pot. Then, water was added into the dyeing pot, and the amount of the added water was 20 times of the wight of the nylon textiles to be dyed (bath ratio=1:20). The dyebath was slowly heated to 98 C. (heating rate 1.01.5 C./min, and the temperature was kept for 30 min. Then, the nylon textiles were removed from the dyebath, the absorbance of the dyeing effluent was detected, and the dyed nylon textiles were washing.

[0020] Washing Off Process

[0021] After the dyeing process, the dyed nylon textiles were removed from the dyebath, and the pick-up rate of the dyed nylon textiles was 200% Then, the dyed nylon textiles were placed in a pot containing a fixed amount of water, wherein a ratio of the amount of water to the dyed nylon textiles were 1:20. The dyed nylon textiles were washed off at room temperature for 10 min. The washing off process was repeated for three times.

[0022] Examination Process

[0023] The dyeing effluent was placed into a quartz tube (width=1 cm), and the visible light absorbance thereof was detected by an UV/VIS spectrometer. Visible light band (400 nm to 700 nm) was scanned, and the peak absorbance was recorded.

[0024] Chemical Oxygen Demand (COD) Test

[0025] Excess amount of a potassium dichromate solution was added into the water sample, followed by refluxing in a sulfuric acid solution (about 50 wt %). The remaining potassium dichromate was titrated with an ammonium ferrous sulfate solution. The chemical oxygen demand (COD) can be determined by the consumption amount of the potassium dichromate, wherein the COD refers to the amount of the organic molecules capable of being oxidized in the water sample.

[0026] American Dye Manufacturers Institute (ADMI) Value Test

[0027] True color means the color of the water sample after removing turbidity. The transmittance of the water sample at 590 nm, 540 nm and 438 nm was determined by the spectrophotometer. The Tristimulus value and the Munsell values were calculated from the transmittance, and then the DE value (Delta E, also called as Delta Error) was determined by Adams-Nickerson chromatic value formula. The DE value (Delta E, also called as Delta Error) is a calculated value of optical intensity, which is based on the maximum color difference acceptable in the commercial product as one unit. The DE value was compared with the calibration curve to obtain the ADMI value of the water sample.

Example 1

[0028] Acid Black 172 and CaCl.sub.2 was mixed to dye the nylon microfiber textiles and the double jersey nylon textiles. In the present embodiment, the amount of the added water was 10 times of the weight of the nylon textiles (bath ratio=1:10). The weight ratio of the acid dye to the nylon textiles was 5%. The results are shown in the following Table 1.

TABLE-US-00001 TABLE 1 Double jersey Nylon microfiber nylon textiles Acid Ca.sup.2+ textiles PM5/20D, 70D/24f, Black 172 compound/ CaCl.sub.2 ABS value of the ABS value of the (o.w.f) acid dye (o.w.f) dyeing effluent dyeing effluent 5% 0.00% 0.00% 22200 12360 5% 0.50% 0.03% 17720 10200 5% 1.00% 0.05% 14280 8820 5% 2.00% 0.10% 10880 5900 5% 4.00% 0.20% 4860 2510 5% 8.00% 0.40% 1558 851 5% 12.00% 0.60% 912 547 5% 16.00% 0.80% 581 447 5% 20.00% 1.00% 461 379 5% 24.00% 1.20% 424 333 5% 30.00% 1.50% 375 281

[0029] From the results shown in Table 1, the optical intensity of the dyed effluent can be significantly reduced when CaCl.sub.2 and the acid dye was co-used to dye the nylon microfiber textiles.

Example 2

[0030] Acid Black 172 and Ca(CH.sub.3COO).sub.2 was suitable to dye the nylon microfiber textiles and the double jersey nylon textiles. In the present embodiment, the amount of the added water was 10 times of the weight of the nylon textiles (bath ratio=1:10). The weight ratio of the acid dye to the nylon textiles was 5%. The results are shown in the following Table 2.

TABLE-US-00002 TABLE 2 Nylon microfiber Double jersey textiles nylon textiles PM5/20D, 70D/24f, Acid Black 172 Ca.sup.2+ compound/ Ca(CH.sub.3COO).sub.2 ABS value of the ABS value of the (o.w.f) acid dye (o.w.f) dyeing effluent dyeing effluent 5% 0.00% 0.00% 15720 19040 5% 0.50% 0.03% 14400 15200 5% 1.00% 0.05% 12820 12760 5% 2.00% 0.10% 9480 10190 5% 4.00% 0.20% 6150 6370 5% 8.00% 0.40% 2333 2680 5% 12.00% 0.60% 1383 1597 5% 16.00% 0.80% 1037 1208 5% 20.00% 1.00% 882 1034 5% 24.00% 1.20% 754 832 5% 30.00% 1.50% 691 718

[0031] From the results shown in Table 2, the optical intensity of the dyed effluent can be significantly reduced when Ca(CH.sub.3COO).sub.2 and the acid dye was co-used to dye the nylon microfiber textiles.

Example 3

[0032] Acid Black 172 and CaCl.sub.2 was mixed to dye the nylon microfiber textiles. Herein, in the contrast group without CaCl.sub.2, the weight ratio of the acid dye to the nylon textiles was 9.5%. In the group with CaCl.sub.2, the weight ratio of the acid dye to the nylon textiles was 6%, and the weight ratio of CaCl.sub.2 to the acid dye was 8%. Even though the weight ratio of the acid dye to the nylon textiles in the group with CaCl.sub.2 is lower than that in the contrast group without CaCl.sub.2, similar dyeing depth can be obtained. The results are shown in the following Table 3.

TABLE-US-00003 TABLE 3 Acid Black Dye Acid Black 172 172 + CaCl.sub.2 Use amount of the acid 9.5% 6% dye for obtaining similar dying strength ABS value of the 83040 9490 dyeing effluent ABS value of the 8260 1505 dyeing effluent after the 1.sup.st washing off process ABS value of the 2700 874 dyeing effluent after the 2.sup.nd washing off process ABS value of the 1537 583 dyeing effluent after the 3.sup.rd washing off process

[0033] From the results shown in Table 3, when CaCl.sub.2 and the acid dye was co-used to dye the nylon microfiber textiles, the use amount of the acid dye can be reduced, the optical intensity of the dyeing effluent is low, and the depth of the dyed nylon microfiber textiles had been greatly improved.

[0034] In addition, the COD and the AMDI value of the dyeing effluent and the overall effluent after the washing off process performed for three times were measured in the present embodiment. The results are shown in the following Table 4.

TABLE-US-00004 TABLE 4 Dyeing effluent Overall effluent Dye COD ADMI COD ADMI Acid Black 172 7,680 129,370 2,820 40,581 Acid Black 172 + CaCl.sub.2 4,960 12,487 1,540 4,314

[0035] From the results shown in Table 4, when CaCl.sub.2 and the acid dye was co-used to dye the nylon microfiber textiles, the COD and the ADMI values of the dyeing effluent and the overall effluent after the washing off process can be greatly reduced, so the purpose of the environmental protection in the current green chemistry can be achieved.

Embodiment 4

[0036] Acid Yellow 220 (Y-220) and CaCl.sub.2 was mixed to dye the nylon microfiber textiles. Herein, in the contrast group without CaCl.sub.2, the weight ratio of the acid dye to the nylon textiles was 1% and 4%. In the group with CaCl.sub.2, the weight ratio of the acid dye to the nylon textiles was also 1% and 4%, and the weight ratio of CaCl.sub.2 to the acid dye was 8%. The results are shown in the following Table 5.

TABLE-US-00005 TABLE 5 ABS value Effluent Effluent Effluent after the 1.sup.st after the 2.sup.nd after the 3.sup.rd Dyeing washing off washing off washing off Dye effluent process process process Y-220 (1%) 58 9 8 8 Y-220 (4%) 361 56 40 43 Y-220 (1.0%) + 44 12 10 10 CaCl.sub.2 (8%) Y-220 (4.0%) + 183 87 52 70 CaCl.sub.2 (8%)

Example 5

[0037] Acid Red 315 (R-315) and CaCl.sub.2 was mixed to dye the nylon microfiber textiles. Herein, in the contrast group without CaCl.sub.2, the weight ratio of the acid dye to the nylon textiles was 1% and 4%. In the group with CaCl.sub.2, the weight ratio of the acid dye to the nylon textiles was also 1% and 4%, and the weight ratio of CaCl.sub.2 to the acid dye was 8%. The results are shown in the following Table 6.

TABLE-US-00006 TABLE 6 ABS value Effluent Effluent Effluent after the 1.sup.st after the 2.sup.nd after the 3.sup.rd Dyeing washing off washing off washing off Dye effluent process process process R-315 (1%) 35 6 5 4 R-315 (4%) 10950 1390 938 580 R-315 (1.0%) + 13 1 1 1 CaCl.sub.2 (8%) R-315 (4.0%) + 1469 256 237 170 CaCl.sub.2 (8%)

Example 6

[0038] Acid Blue 317 (B-317) and CaCl.sub.2 was mixed to dye the nylon microfiber textiles. Herein, in the contrast group without CaCl.sub.2, the weight ratio of the acid dye to the nylon textile was 1% and 4%. In the group with CaCl.sub.2, the weight ratio of the acid dye to the nylon textiles was also 1% and 4%, and the weight ratio of CaCl.sub.2 to the acid dye was 8%. The results are shown in the following Table 7.

TABLE-US-00007 TABLE 7 ABS value Effluent Effluent Effluent after the 1.sup.st after the 2.sup.nd after the 3.sup.rd Dyeing washing off washing off washing off Dye effluent process process process B-317 (1%) 47 11 10 10 B-317 (4%) 1683 173 76 31 B-317 (1.0%) + 46 9 9 9 CaCl.sub.2 (8%) B-317 (4.0%) + 284 55 37 28 CaCl.sub.2 (8%)

Example 7

[0039] Acid Blue 113 (B-113) and CaCl.sub.2 was mixed to dye the nylon microfiber textiles. Herein, in the contrast group without CaCl.sub.2, the weight ratio of the acid dye to the nylon textile was 1% and 4%. In the group with CaCl.sub.2, the weight ratio of the acid dye to the nylon textiles was also 1% and 4%, and the weight ratio of CaCl.sub.2 to the acid dye was 8%. The results are shown in the following Table 8.

TABLE-US-00008 TABLE 8 ABS value Effluent Effluent Effluent after the 1.sup.st after the 2.sup.nd after the 3.sup.rd Dyeing washing off washing off washing off Dye effluent process process process B-113 (1%) 46 6 5 4 B-113 (4%) 8320 1081 987 841 B-113 (1.0%) + 53 7 5 5 CaCl.sub.2 (8%) B-113 (4.0%) + 661 127 71 53 CaCl.sub.2 (8%)

[0040] From the results shown in Table 5 to Table 8, when CaCl.sub.2 and the acid dye was co-used to dye the nylon microfiber textiles and the weight ratio of the acid dye to the nylon textile was 4%, the optical intensity of the dyeing effluent can be reduced. In addition, the dye concentration in the effluent after the washing off process can be decreased, and the wastewater amount generated during the washing off process can be greatly reduced.

Example 8

[0041] Acid Black 172 was mixed with CaCl.sub.2 and CaSO.sub.4 respectively to dye the nylon microfiber textiles. The weight ratio of the acid dye to the nylon textiles was 6%. The weight ratio of CaCl.sub.2 to the acid dye was 8%. The weight ratio of CaSO.sub.4 to the acid dye was 7.37%. The results are shown in the following Table 9.

TABLE-US-00009 TABLE 9 ABS value Effluent Effluent Effluent after the 1.sup.st after the 2.sup.nd after the 3.sup.rd Dyeing washing off washing off washing off Dye effluent process process process Acid Black 172 2390 348 291 198 (6%) + CaCl.sub.2 (8%) Acid Black 172 2681 378 315 251 (6%) + CaSO.sub.4 (7.37%) Acid Black 172 22800 2708 1391 949 (6%)

[0042] From the results shown in Table 9, the effects on reducing the dyeing effluent and the effluent after the washing off process are similar in the groups with CaCl.sub.2 and CaSO.sub.4 when the Ca.sup.2+ equivalent concentration are the same. Herein, the group with CaCl.sub.2 shows much better effect.

[0043] In conclusion, when the water soluble Ca.sup.2+ compound is added into the acid dye composition of the present disclosure, the concentration of the dyeing effluent can be reduced in the hyperchromic dyeing. Therefore, the wastewater generated during the washing off process can be greatly reduced to accomplish the purpose of the environmental protection in the current green chemistry.

[0044] Although the present disclosure has been explained in relation to its embodiment, it is to be understood that many other possible modifications and variations can be made without departing from the spirit and scope of the disclosure as hereinafter claimed.