Refining and dyeing one-bath auxiliary agent for polyester rapid heating process as well as preparation method and application of refining and dyeing one-bath auxiliary agent

Abstract

The invention belongs to the technical field of textile assistants, and particularly relates to a scouring and dyeing one-bath assistant for a polyester rapid heating process as well as a preparation method and application of the scouring and dyeing one-bath assistant. The scouring and dyeing one-bath auxiliary agent for the polyester rapid heating process comprises the following raw materials: phenol, styrene, benzyl chloride, ethylene oxide, p-toluenesulfonic acid, hydroquinone, potassium hydroxide, fatty alcohol-polyoxyethylene ether, sodium dodecyl benzene sulfonate, ethylene glycol butyl ether and water. The auxiliary agent provided by the invention has excellent migration and retarding functions and high-temperature dispersibility, and can effectively prevent the problems of color marks and color difference, especially sensitive yarn-dyed fabrics.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of textile auxiliaries, and particularly relates to a polyester rapid heating process scouring and dyeing one-bath auxiliary, a preparation method and application thereof. BACKGROUND

[0002] The conventional polyester dyeing process usually adopts a two-bath process of pre-removing oil and then dyeing. Such a process has the problems of slow heating rate, long dyeing time, and large water, electricity and gas consumption, and often has the problems of stain residue, oil agent backstaining, dyeing color trace and color spot during dyeing, which affects the first-time success rate of dyeing.

[0003] At present, the industry is developing a scouring and dyeing one-bath process of removing oil and dyeing in one step, which greatly shortens the process time, and uses high-efficiency oil removing agent and leveling agent as scouring and dyeing one-bath auxiliary, expecting to remove the oil stains cleanly and stably disperse them in the bath, have good compatibility with dyes, and not produce dyeing color spots and color marks.

[0004] To achieve the above expectations, the auxiliary in the scouring and dyeing one-bath needs to have the following performances: 1) while ensuring high first-time dyeing success rate, improve the dyeing heating speed, significantly shorten the dyeing time, and improve the factory efficiency. 2) excellent migration and slow dyeing functions and high-temperature dispersibility, which can effectively prevent the generation of color trace and match difference problems, especially for sensitive color fabrics. 3) excellent normal temperature and high temperature emulsifying power, which can make the oil agent evenly disperse in the dyeing solution, prevent the color marks and color spots caused by oil agent backstaining. 4) excellent oil removing effect, good compatibility with various oil agents, which can avoid the problems of color marks and color marks caused by incomplete or uneven oil removal of fabrics. 5) excellent stain removing effect, which can effectively remove various stains on fabrics, and the fabric surface is clean after treatment. 6) small color removal, small difference between the vat and the match, high production stability, and good fabric quality.

[0005] The conventional scouring and dyeing one-bath auxiliary in the market has poor compatibility with oil-removed fabrics and unstable oil removing effect, and often has the problems of stain residue, dyeing color marks and color spots during dyeing, which is particularly obvious on fabrics with heavy oil agent.

[0006] Therefore, it is necessary to develop a more efficient scouring and dyeing one-bath auxiliary suitable for the low-cost polyester scouring and dyeing one-bath process of rapid heating, which can effectively prevent the dyeing problems of page difference, color trace and color spot caused by insufficient and uneven oil agent and stain removal, and provide a solution for the polyester and its blended fabric scouring and dyeing one-bath process of rapid heating and high first-time success rate. SUMMARY

[0007] In view of the deficiencies of the prior art, the present application provides a polyester rapid heating process scouring and dyeing one-bath auxiliary, a preparation method and application thereof.

[0008] In order to achieve the above-mentioned purposes of the present application, the specific technical scheme adopted by the present application is that: A polyester rapid heating process scouring and dyeing one bath aid, raw materials include: phenol, styrene, benzyl chloride, ethylene oxide, p-toluenesulfonic acid, hydroquinone, potassium hydroxide, fatty alcohol polyoxyethylene ether, sodium dodecyl benzene sulfonate, ethylene glycol butyl ether and water.

[0009] Preferably, the raw materials include, by weight fraction: phenol 5-15 parts, styrene 5-15 parts, benzyl chloride 5-20 parts, ethylene oxide 10-20 parts, p-toluenesulfonic acid 10-20 parts, hydroquinone 1-5 parts, potassium hydroxide 1-5 parts, fatty alcohol polyoxyethylene ether 2-10 parts, sodium dodecyl benzene sulfonate 2-10 parts, ethylene glycol butyl ether 2-5 parts and water 30-40 parts.

[0010] Further preferably, the raw materials include, by weight fraction: phenol 8-12 parts, styrene 8-12 parts, benzyl chloride 10-20 parts, ethylene oxide 15-20 parts, p-toluenesulfonic acid 15-20 parts, hydroquinone 2-4 parts, potassium hydroxide 2-4 parts, fatty alcohol polyoxyethylene ether 5-7 parts, sodium dodecyl benzene sulfonate 5-7 parts, ethylene glycol butyl ether 3-4 parts and water 30-40 parts.

[0011] The present application also relates to a preparation method of the above-mentioned polyester rapid heating process scouring and dyeing one bath aid, comprising the following steps: (1) mixing phenol and styrene, adding p-toluenesulfonic acid and hydroquinone, and performing Friedel-Crafts alkylation reaction to obtain styryl phenol; (2) mixing styryl phenol and benzyl chloride, adding ethylene oxide and potassium hydroxide, and performing ethoxylation reaction to obtain benzyl styryl phenol polyoxyethylene ether; (3) mixing benzyl styryl phenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, sodium dodecyl benzene sulfonate, ethylene glycol butyl ether and water, and stirring to obtain the scouring and dyeing one bath aid.

[0012] Preferably, the Friedel-Crafts alkylation reaction in step (1) is performed at 80-100°C in a nitrogen environment for 3-5h.

[0013] Further preferably, after the Friedel-Crafts alkylation reaction, the method further comprises the steps of adjusting pH to 6.8-7.2, standing and separating, and reducing pressure distillation of the upper liquid.

[0014] Preferably, the ethoxylation reaction in step (2) is performed at 140-180°C under a pressure of 0.4-0.75MPa for 1-3h.

[0015] Further preferably, after the ethoxylation reaction, the method further comprises the steps of adjusting pH to 6.8-7.2, standing and separating, and purifying the upper liquid by adding n-hexane.

[0016] The present application also relates to application of the polyester rapid heating process scouring and dyeing one-bath agent or the polyester rapid heating process scouring and dyeing one-bath agent prepared by the preparation method in the field of textiles.

[0017] Compared with the prior art, the present application has the following beneficial effects: (1) The present application has excellent migration, slow dyeing function and high temperature dispersibility, which can effectively prevent color trace and match difference problems, especially sensitive color fabrics.

[0018] (2) The present application has excellent normal temperature and high temperature emulsifying power, which can make oil evenly dispersed in the dyeing solution, preventing color spots caused by oil return.

[0019] (3) The present application has excellent oil removal effect and good compatibility with various oils, which can avoid color and strip problems caused by incomplete or uneven oil removal.

[0020] (4) The present application has small color removal, small vat difference and match difference, high production stability and good fabric quality.

[0021] (5) The present application can reduce production cost while ensuring high first dyeing success rate and fabric quality. DETAILED DESCRIPTION

[0022] The present application will be further described in detail below in combination with specific examples, which are not used to limit the present application, but only to illustrate the present application. Unless otherwise specified, the experimental methods in the following examples are generally carried out under conventional conditions. Unless otherwise specified, the materials and reagents used in the following examples can be obtained from commercial channels.

[0023] Fatty alcohol polyoxyethylene ether, purchased from Tongling Jintai Chemical Co., Ltd., model AEO-9.

[0024] Example 1 A polyester rapid heating process scouring and dyeing one-bath agent, by weight fraction, the raw materials are: phenol 10 parts, styrene 10 parts, benzyl chloride 15 parts, ethylene oxide 18 parts, p-toluenesulfonic acid 15 parts, hydroquinone 3 parts, potassium hydroxide 3 parts, fatty alcohol polyoxyethylene ether 6 parts, sodium dodecyl benzene sulfonate 6 parts, ethylene glycol butyl ether 4 parts and water 35 parts.

[0025] The preparation method is: (1) Mix phenol and styrene, add p-toluenesulfonic acid and hydroquinone, and carry out Friedel-Crafts alkylation reaction at 90℃ under nitrogen environment for 4h, then add sodium carbonate solution to adjust pH to 7.0, stand and separate, and distill the upper liquid under reduced pressure to obtain styrene phenol; (2) the styrenated phenol and benzyl chloride are mixed, ethylene oxide and potassium hydroxide are added, and ethoxylation reaction is carried out at 160 DEG C and 0.6 MPa for 2 h; after the reaction, phosphoric acid solution is added to adjust the pH to 7.0, and after standing and layering, the upper liquid is purified by n-hexane to obtain benzyl styrenated phenol polyoxyethylene ether; (3) the benzyl styrenated phenol polyoxyethylene ether, sodium dodecyl benzene sulfonate, ethylene glycol butyl ether and water are mixed and stirred uniformly to obtain the product.

[0026] Example 2 A polyester rapid heating process scouring and dyeing one-bath agent, by weight fraction, raw materials are: phenol 5 parts, styrene 5 parts, benzyl chloride 5 parts, ethylene oxide 10 parts, p-toluenesulfonic acid 10 parts, hydroquinone 1 part, potassium hydroxide 1 part, fatty alcohol polyoxyethylene ether 10 parts, sodium dodecyl benzene sulfonate 10 parts, ethylene glycol butyl ether 3 parts and water 30 parts.

[0027] The preparation method is: (1) the phenol and styrene are mixed, p-toluenesulfonic acid and hydroquinone are added, and Friedel-Crafts alkylation reaction is carried out at 80 DEG C under nitrogen environment for 5 h; after the reaction, sodium carbonate solution is added to adjust the pH to 7.0, and after standing and layering, the upper liquid is distilled under reduced pressure to obtain styrenated phenol; (2) the styrenated phenol and benzyl chloride are mixed, ethylene oxide and potassium hydroxide are added, and ethoxylation reaction is carried out at 140 DEG C and 0.4 MPa for 3 h; after the reaction, phosphoric acid solution is added to adjust the pH to 7.0, and after standing and layering, the upper liquid is purified by n-hexane to obtain benzyl styrenated phenol polyoxyethylene ether; (3) the benzyl styrenated phenol polyoxyethylene ether, sodium dodecyl benzene sulfonate, ethylene glycol butyl ether and water are mixed and stirred uniformly to obtain the product.

[0028] Example 3 A polyester rapid heating process scouring and dyeing one-bath agent, by weight fraction, raw materials are: phenol 15 parts, styrene 15 parts, benzyl chloride 20 parts, ethylene oxide 20 parts, p-toluenesulfonic acid 20 parts, hydroquinone 5 parts, potassium hydroxide 5 parts, fatty alcohol polyoxyethylene ether 2 parts, sodium dodecyl benzene sulfonate 2 parts, ethylene glycol butyl ether 5 parts and water 40 parts.

[0029] The preparation method is: (1) the phenol and styrene are mixed, p-toluenesulfonic acid and hydroquinone are added, and Friedel-Crafts alkylation reaction is carried out at 100 DEG C under nitrogen environment for 3 h; after the reaction, sodium carbonate solution is added to adjust the pH to 7.0, and after standing and layering, the upper liquid is distilled under reduced pressure to obtain styrenated phenol; (2) mixing styrenated phenol and benzyl chloride, adding ethylene oxide, potassium hydroxide, and performing ethoxylation reaction at 180℃ and 0.75MPa for 1.5h, after the reaction, adding phosphoric acid solution to adjust pH to 7.0, standing and separating layers, taking the upper liquid to purify by n-hexane to obtain benzyl styrenated phenol polyoxyethylene ether; (3) mixing benzyl styrenated phenol polyoxyethylene ether, sodium dodecyl benzene sulfonate, ethylene glycol butyl ether and water, and stirring uniformly to obtain the product.

[0030] Comparative Example 1 The difference between this comparative example and Example 1 is only in the amount of raw materials, specifically: According to weight fraction, the raw materials are: phenol 10 parts, styrene 10 parts, benzyl chloride 15 parts, ethylene oxide 18 parts, p-toluenesulfonic acid 15 parts, hydroquinone 3 parts, potassium hydroxide 3 parts, fatty alcohol polyoxyethylene ether 15 parts, sodium dodecyl benzene sulfonate 15 parts, ethylene glycol butyl ether 8 parts and water 35 parts.

[0031] The preparation method is consistent with that of Example 1.

[0032] Comparative Example 2 The difference between this comparative example and Example 1 is only in the amount of raw materials, specifically: According to weight fraction, the raw materials are: phenol 10 parts, styrene 10 parts, benzyl chloride 15 parts, ethylene oxide 18 parts, p-toluenesulfonic acid 25 parts, hydroquinone 3 parts, potassium hydroxide 8 parts, fatty alcohol polyoxyethylene ether 6 parts, sodium dodecyl benzene sulfonate 6 parts, ethylene glycol butyl ether 4 parts and water 35 parts.

[0033] The preparation method is consistent with that of Example 1.

[0034] Comparative Example 3 The difference between this comparative example and Example 1 is only in the amount of raw materials, specifically: According to weight fraction, the raw materials are: phenol 10 parts, styrene 10 parts, benzyl chloride 15 parts, ethylene oxide 18 parts, p-toluenesulfonic acid 5 parts, hydroquinone 3 parts, potassium hydroxide 0.5 parts, fatty alcohol polyoxyethylene ether 6 parts, sodium dodecyl benzene sulfonate 6 parts, ethylene glycol butyl ether 4 parts and water 35 parts.

[0035] The preparation method is consistent with that of Example 1.

[0036] Comparative Example 4 The difference between this comparative example and Example 1 is only that ethylene oxide is replaced by propylene oxide and butylene oxide with a mass ratio of 1:1.

[0037] The preparation method is consistent with that of Example 1.

[0038] Effect test Test Example 1 migration performance test Formulation: One-bath scouring and dyeing assistant, (g / L) (see Table 1 for details), working liquor pH value: 4-6; Fabric: Red polyester fabric (MS red 2%) 2.5 g + white polyester fabric 2.5 g; Bath ratio 1:20; Process: 130℃×40min immersion treatment by infrared dyeing machine → washing → drying → testing the Y value of the fabric surface by WSD-3C full-automatic whiteness tester → K / S value of white fabric and red fabric (calculated according to the formula (100-Y)×(100-Y) / (200×Y)) → calculating the migration rate (according to the K / S value 白布 / K / S value 红布 ).

[0039] The test results are shown in Table 1.

[0040] Table 1 Test results of migration performance

[0041] As can be seen from Table 1 above, the assistant in Examples 1-3 has excellent dispersion migration effect on polyester fabric, and the dispersion migration performance is more than 4 times that of commercially available products.

[0042] Test Example 2: Slow dyeing performance test Formulation: glacial acetic acid 1 g / L + B-RG yellow brown 0.8% (o.w.f) + B-RG red jade 0.4% (o.w.f) + B-RG dark blue 0.5% (o.w.f) + different one-bath scouring and dyeing assistants 1 g / L; Fabric: white polyester fabric 5 g; Bath ratio 1:20; Process: 1.5℃ / min temperature rise immersion treatment → sampling at 90℃ / 110℃ / 130℃ / 130℃×40min respectively → washing → drying → testing Y value → calculating dye uptake.

[0043] The test results are shown in Table 2.

[0044] Table 2 Test results of slow dyeing performance

[0045] As can be seen from Table 2 above, the assistant of the present application has excellent slow dyeing effect in the process of dispersion dyeing, and the slow dyeing effect is obviously better than that of commercially available products.

[0046] Test Example 3: Color removal performance test Formulation: glacial acetic acid 1 g / L + D-RG yellow brown 0.37% (o.w.f) + D-RG red jade 0.59% (o.w.f) + D-RG dark blue 0.43% (o.w.f) + different one-bath scouring and dyeing assistants X g / L; Fabric: white polyester cloth 5g; Bath ratio 1:20; Process: 1.5℃ / min heating→130℃ dipping treatment for 40min→water washing→drying→testing total color difference (△E).

[0047] The test results are shown in Table 3, with no practice one-bath auxiliary as reference.

[0048] Table 3 color removal test results

[0049] As can be seen from Table 3 above, the auxiliary of the present application has less color removal in the process of dispersion dyeing, which is significantly less than that of commercially available products.

[0050] Test Example 4 High temperature dispersibility test Formulation: glacial acetic acid 1g / L+B-RG yellow brown filter cake 0.5 / L+B-RG red jade filter cake 0.5g / L+B-RG dark blue filter cake 0.5g / L+different practice one-bath auxiliaries 1g / L; Process: 1.5℃ / min heating→130℃ dipping treatment for 40min→the dyeing solution is cooled to 90℃ and kept for 10min before filtration→the filtration time is recorded and the amount of dye residue on the filter paper and the distribution state are observed.

[0051] Filter paper dye residue rating method: 1-5 levels are respectively: none, small amount, medium amount, more, large amount; Filter paper dye distribution state rating method: 1-5 levels are respectively: extremely uneven, uneven, slightly uneven, relatively uniform, uniform.

[0052] The test results are shown in Table 4.

[0053] Table 4 high temperature dispersibility test results

[0054] As can be seen from Table 4 above, the auxiliary of the present application has excellent high temperature dispersibility for disperse dyes in the process of dyeing, which is significantly better than that of commercially available products.

[0055] Test Example 5 oil removal performance test Formulation: different practice one-bath auxiliaries Xg / L; Fabric: polyester knitted fabric (spandex content 20%) 10g; Bath ratio 1:20; Process: 130℃ dipping treatment for 40min→water washing→drying→testing fabric oil content.

[0056] The test results are shown in Table 5.

[0057] Table 5 fabric oil content test results

[0058] From the above Table 5, it can be seen that the auxiliary of the present application has excellent oil removal performance in the dyeing process.

[0059] The above detailed description is for one of the possible embodiments of the present application, which is not intended to limit the patent scope of the present application, and any equivalent implementation or change made without departing from the present application shall be included in the scope of the technical solutions of the present application.

Claims

1. A one-bath auxiliary agent for rapid heating and dyeing of polyester, characterized in that, The raw materials for the polyester rapid heating process dyeing and scouring one-bath auxiliary agent include: phenol, styrene, benzyl chloride, ethylene oxide, p-toluenesulfonic acid, hydroquinone, potassium hydroxide, fatty alcohol polyoxyethylene ether, sodium dodecylbenzenesulfonate, ethylene glycol butyl ether, and water.

2. The polyester rapid heating process dyeing and scouring auxiliary agent according to claim 1, characterized in that, By weight, the raw materials include: 5-15 parts phenol, 5-15 parts styrene, 5-20 parts benzyl chloride, 10-20 parts ethylene oxide, 10-20 parts p-toluenesulfonic acid, 1-5 parts hydroquinone, 1-5 parts potassium hydroxide, 2-10 parts fatty alcohol polyoxyethylene ether, 2-10 parts sodium dodecylbenzenesulfonate, 2-5 parts ethylene glycol butyl ether, and 30-40 parts water.

3. The polyester rapid heating process dyeing and scouring auxiliary agent according to claim 2, characterized in that, By weight, the raw materials include: 8-12 parts phenol, 8-12 parts styrene, 10-20 parts benzyl chloride, 15-20 parts ethylene oxide, 15-20 parts p-toluenesulfonic acid, 2-4 parts hydroquinone, 2-4 parts potassium hydroxide, 5-7 parts fatty alcohol polyoxyethylene ether, 5-7 parts sodium dodecylbenzenesulfonate, 3-4 parts ethylene glycol butyl ether, and 30-40 parts water.

4. A method for preparing a one-bath auxiliary agent for rapid heating dyeing and scouring of polyester according to any one of claims 1-3, characterized in that, Includes the following steps: (1) Phenol and styrene are mixed, p-toluenesulfonic acid and hydroquinone are added, and Friedel-Crafts alkylation reaction is carried out to obtain styrene-modified phenol; (2) Styrified phenol and benzyl chloride are mixed, and ethylene oxide and potassium hydroxide are added to carry out ethoxylation reaction to obtain benzyl styrified phenol polyoxyethylene ether; (3) Mix benzyl styrene-modified phenol polyoxyethylene ether, fatty alcohol polyoxyethylene ether, sodium dodecylbenzene sulfonate, ethylene glycol butyl ether and water, and stir to obtain the product.

5. The preparation method according to claim 4, characterized in that, The conditions for the Friedel-Crafts alkylation reaction in step (1) are: 80-100℃, nitrogen atmosphere, and reaction time of 3-5h.

6. The preparation method according to claim 5, characterized in that, The Friedel-Crafts alkylation reaction also includes steps such as adjusting the pH to 6.8-7.2, allowing the mixture to stand and separate into layers, and then distilling the upper layer under reduced pressure.

7. The preparation method according to claim 4, characterized in that, The temperature of the ethoxylation reaction in step (2) is 140-180℃, the pressure of the reaction is 0.4-0.75MPa, and the reaction time is 1-3h.

8. The preparation method according to claim 7, characterized in that, The ethoxylation reaction also includes steps such as adjusting the pH to 6.8-7.2, allowing the mixture to stand and separate into layers, and then purifying the upper layer with n-hexane.

9. The application of a one-bath auxiliary agent for rapid heating process dyeing and scouring of polyester as described in any one of claims 1-3 or a one-bath auxiliary agent for rapid heating process dyeing and scouring of polyester prepared by the preparation method described in any one of claims 4-8 in the textile field.

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