A one-bath degreasing agent, its preparation method and application

Abstract

The application discloses a kind of one bath oil removal agent and preparation method and application, a kind of one bath oil removal agent, by following mass percentage component constitutes: castor oil polyoxyethylene ether sulfonate 10%-30%, castor oil polyoxyethylene ether 0%-24%, isomeric fatty alcohol polyoxyethylene ether 8%-20%, fatty amine polyoxyethylene ether 4%-10%, fatty alcohol polyoxyethylene ether sulfate 0%-12%, hydroxyl carboxylic acid salt 0%-6%, water 20%-61%.The one bath oil removal agent provided by the application has good decontamination and oil removal effect on textile, is effective for various oil stains, and has wide application range;after oil removal on textile, the fabric has good whiteness, and no yellowing phenomenon occurs;it is phosphorus-free, APEO-free, biodegradable, environmentally friendly, green and pollution-free;no additional defoaming agent is needed, has good wetting and foam inhibition effect, strong emulsifying capacity, and good compatibility with other surfactants and additives;the preparation method is simple and easy to operate, does not need high temperature and high pressure, has low equipment requirement, high safety factor, and can be mass-produced.

Description

Technical Field

[0001] The invention relates to the technical field of textile degreasing agents, in particular to a one-bath degreasing agent and a preparation method and application thereof. Background Art

[0002] During the textile processing, in order to improve fiber cohesion, protect fiber strength and reduce breakage rate, special textile oils are usually added. The raw yarn of the fabric contains oils such as dimethyl silicone oil, amino-modified or polyether-modified silicone oil. The weaving mill also adds oils such as mineral oil to ensure smooth manufacturing.

[0003] In addition to the oils used for spinning, the oils on chemical fiber fabrics also include spinning oils and weaving oils used in textile factories.

[0004] Spinning oils typically consist of lubricants and surfactants. Lubricants include mineral oil, esterified oil, liquid paraffin, silicone oil, synthetic resin, and oil-wax emulsions, while surfactants include higher fatty alcohols, fatty acids, fatty acid esters, or natural animal and plant oils, glycerol ethers, and octyl palmitate. The oil used for staple fibers primarily imparts antistatic properties to the fibers, eliminating the effects of static electricity during the blowroom, carding, drawing, roving, fine spinning, and stretch-slitting processes. Therefore, the oil used for staple fibers primarily consists of an antistatic agent, supplemented by smoothing and sizing agents. The oil used for filament fibers should facilitate package formation during spinning and ensure smooth stretching, false twisting, and weaving processes. The oil primarily consists of a lubricant, supplemented by emulsifiers and antistatic agents. Furthermore, fibers are susceptible to oil contamination during weaving, storage, and transportation. These contaminants must be thoroughly removed before dyeing to prevent difficult-to-remove defects such as color stains, color blooms, color lakes, and silicone oil spots, some of which are even irreparable.

[0005] Currently, most commonly used degreasers for removing oil and grease from textiles use a surfactant complex. These surfactants are mixed with water and other additives to create a working solution. To ensure uniformity, the working solution requires vigorous stirring during the preparation process, which draws air into the solution. Furthermore, air is also drawn into the fabric as it enters the working solution trough or machine, inevitably generating gas. The resulting foam can obscure the actual level of the treatment solution, leading to overflow of the degreasing and scouring agent, uneven dissolution, and ultimately, residual foam during discharge, resulting in incomplete discharge. Excessive foam can lift fabric, clog the working solution circulation nozzles, and exacerbate the accumulation of working solution contaminants, leading to staining of fabrics and equipment surfaces. To ensure effective rinsing, multiple rinses require large volumes of water, resulting in excessive waste of water resources. Furthermore, with increasing environmental pressures and increasing energy shortages such as water, electricity, and gas, the development of environmentally friendly, one-bath degreasers for dyeing that combine excellent degreasing effectiveness with streamlined processes is a growing trend. Summary of the Invention

[0006] The purpose of the present invention is to provide a one-bath degreasing agent and its preparation method and application, so as to provide a one-bath degreasing agent for chemical fiber fabrics which has good wetting and foam suppression effects, strong emulsification ability, good decontamination and oil removal and anti-re-staining effects, is easily biodegradable, easy to rinse, and has a wide range of applications.

[0007] To achieve the above objectives, the present invention provides a one-bath degreaser, a preparation method, and applications thereof. The one-bath degreaser comprises the following components in percentage by mass: 10%-30% castor oil polyoxyethylene ether sulfonate, 0%-24% castor oil polyoxyethylene ether, 8%-20% isomeric fatty alcohol polyoxyethylene ether, 4%-10% fatty amine polyoxyethylene ether, 0%-12% fatty alcohol polyoxyethylene ether sulfate, 0%-6% hydroxycarboxylate, and 20%-61% water.

[0008] Preferably, it is composed of the following components in percentage by mass: 10%-20% of castor oil polyoxyethylene ether sulfonate, 16%-24% of castor oil polyoxyethylene ether, 8%-16% of isomerized fatty alcohol polyoxyethylene ether, 4%-8% of fatty amine polyoxyethylene ether, 8%-12% of fatty alcohol polyoxyethylene ether sulfate, and 20%-54% of water.

[0009] Preferably, it is composed of the following components in percentage by mass: 20%-30% of castor oil polyoxyethylene ether sulfonate, 12%-20% of isomeric fatty alcohol polyoxyethylene ether, 5%-10% of fatty amine polyoxyethylene ether, 2%-6% of hydroxycarboxylate, and 34%-61% of water.

[0010] A method for preparing the above-mentioned one-bath degreaser comprises the following steps:

[0011] S1. Add castor oil polyoxyethylene ether, diethylene glycol monobutyl ether, and a catalyst to a clean reactor, purge with nitrogen, start stirring with a stirrer, slowly heat the reactor to 40°C, and stir at 40°C for 90 minutes. During this time, add a dispersed modifier in three portions.

[0012] S2. After the addition of the modifier is complete, slowly heat the reactor to 80-85°C and keep the temperature for 1 hour, then heat it to 130-140°C and keep the temperature for 4-5 hours;

[0013] S3. Take a sample to test the solubility of the product. If it is qualified, cool the reactor to 80-85℃, mature the reaction for 1 hour, and then slowly cool it down to make the system temperature less than 50℃. Add an appropriate amount of alkali solution during the cooling process, and then filter the material to obtain castor oil polyoxyethylene ether sulfonate. The chemical reaction formula is as follows:

[0014]

[0015] S4. Add the castor oil polyoxyethylene ether sulfonate obtained in step S3 into the reaction pot, start stirring, add the remaining raw materials in proportion while stirring, stir thoroughly, and filter the material to obtain the same-bath deoiling agent.

[0016] Preferably, in step S1, the mass ratio of castor oil polyoxyethylene ether to diethylene glycol monobutyl ether is 41:9; the catalyst is an amine; slow heating refers to heating from room temperature to 40° C. within 30-50 minutes; and the modifier is aminosulfonic acid.

[0017] Preferably, the sampling test method in step S3 is to add the product in the reactor to the cold water at a ratio of 1-2 mL of product to 100 mL of cold water, stir, and if it is completely dissolved, the solubility of the product is qualified. If it is not completely dissolved, continue the reaction and monitor the solubility of the reactants until the solubility is qualified, then start cooling.

[0018] Preferably, the slow cooling in step S3 refers to reducing the system temperature to less than 50° C. within 30 minutes; and the appropriate amount of alkali solution refers to adding alkali solution until the pH of the system reaches 7.0.

[0019] Preferably, the filtering of the material refers to filtering using 200-300 mesh nylon cloth.

[0020] Application of the above-mentioned one-bath degreasing agent in degreasing textiles.

[0021] Therefore, the present invention provides a one-bath degreasing agent and its preparation method and application, which have the following beneficial effects:

[0022] 1. The one-bath degreaser provided by the present invention has good degreasing and anti-staining effects on textiles, is effective for a variety of oil stains, and has a wide range of applications;

[0023] 2. After the degreasing agent provided by the present invention is used to degrease textiles, the fabric surface has good whiteness and no yellowing occurs;

[0024] 3. The one-bath degreaser provided by the present invention is phosphorus-free, APEO-free, biodegradable, environmentally friendly, and pollution-free.

[0025] 4. The one-bath degreaser provided by the present invention does not require the addition of an external defoamer, has good wetting and anti-foaming effects, strong emulsifying ability, and has good compatibility with other surfactants and additives;

[0026] 5. The preparation method provided by the present invention is simple and easy to operate, does not require high temperature and high pressure, has low equipment requirements, has a high safety factor, and can be produced on a large scale.

[0027] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0029] Figure 1 This is the effect test result of the one-bath degreaser prepared in the embodiment of the present invention. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described below with reference to the accompanying drawings and embodiments.

[0031] In order to make the purpose, technical solutions and advantages of the present application clearer, more thorough and more complete, the technical solutions of the present invention are clearly and completely described below through the accompanying drawings and Examples. The following detailed description is an explanation of the embodiments and is intended to provide further details of the present invention. Unless otherwise specified, all technical terms used in the present invention have the same meaning as those generally understood by those skilled in the art to which the application belongs.

[0032] The reagents and instruments used in the examples were obtained from commercial sources.

[0033] Example 1

[0034] A one-bath degreaser is prepared as follows:

[0035] S1. Add 82g of castor oil polyoxyethylene ether (EL-80), 18g of diethylene glycol monobutyl ether, and 5g of urea to a clean reactor, purify with nitrogen, start the stirrer and stir. Heat the reactor to 40°C within 50min and stir at 40°C for 90min. During this period, add dispersed aminosulfonic acid in three portions.

[0036] S2. After the addition of the modifier is complete, slowly heat the reactor to 85°C and keep it warm for 1 hour, then heat it to 130°C and keep it warm for 4 hours;

[0037] S3. Take 2 mL of the product from the reactor and add it into 100 mL of 30°C pre-cooled water, stir, and observe the dissolution. After the solubility test of the product is qualified, cool the reactor to 85°C, mature the reaction for 1 hour, and then slowly cool the system temperature to 40°C. During the cooling process, add 1M NaOH to adjust the pH to 7, and then filter the material to obtain castor oil polyoxyethylene ether sulfonate. The chemical reaction formula is as follows:

[0038]

[0039] S4. Add 16 g of the castor oil polyoxyethylene ether sulfonate obtained in step S3 to the reaction pot, start stirring, and add 18 g of castor oil polyoxyethylene ether, 10 g of isomeric fatty alcohol polyoxyethylene ether, 6 g of fatty amine polyoxyethylene ether, 10 g of fatty alcohol polyoxyethylene ether sulfate, and 40 g of water in sequence while stirring. After fully stirring, filter the material to obtain a same-bath degreaser.

[0040] Example 2

[0041] A one-bath degreaser is prepared as follows:

[0042] S1. Add 82g of castor oil polyoxyethylene ether (EL-80), 18g of diethylene glycol monobutyl ether, and 5g of urea to a clean reactor, ventilate with nitrogen, start a stirrer, heat the reactor to 40°C within 300min, stir at 40°C for 90min, and add dispersed aminosulfonic acid three times during this period;

[0043] S2. After the addition of the modifier is complete, slowly heat the reactor to 80°C and keep it warm for 1 hour, then heat it to 140°C and keep it warm for 5 hours;

[0044] S3. Take 2 mL of the product from the reactor and add it into 100 mL of 30°C pre-cooled water, stir, and observe the dissolution. After the solubility test of the product is qualified, cool the reactor to 85°C, mature the reaction for 1 hour, and then slowly cool the system temperature to 45°C. During the cooling process, add 1M NaOH to adjust the pH to 7, and then filter the material to obtain castor oil polyoxyethylene ether sulfonate. The chemical reaction formula is as follows:

[0045]

[0046] S4. Add 20 g of the castor oil polyoxyethylene ether sulfonate obtained in step S3 to the reaction pot, start stirring, and add 24 g of castor oil polyoxyethylene ether, 16 g of isomeric fatty alcohol polyoxyethylene ether, 4 g of fatty amine polyoxyethylene ether, 8 g of fatty alcohol polyoxyethylene ether sulfate, and 28 g of water in sequence while stirring. After fully stirring, filter the material to obtain a same-bath degreaser.

[0047] Example 3

[0048] A one-bath degreaser is prepared as follows:

[0049] S1. Add 82g of castor oil polyoxyethylene ether (EL-80), 18g of diethylene glycol monobutyl ether, and 5g of tetramethylammonium hydroxide to a clean reactor, purify with nitrogen, start stirring with a stirrer, heat the reactor to 40°C within 40min, stir at 40°C for 90min, and add dispersed aminosulfonic acid three times during this period;

[0050] S2. After the addition of the modifier is complete, slowly heat the reactor to 85°C and keep the temperature for 1 hour, then heat it to 135°C and keep the temperature for 4.5 hours;

[0051] S3. Take 2 mL of the product from the reactor and add it into 100 mL of 4°C pre-cooled water, stir, and observe the dissolution. After the solubility test of the product is qualified, cool the reactor to 80°C, mature the reaction for 1 hour, and then slowly cool the system temperature to 48°C. During the cooling process, add 1M NaOH to adjust the pH to 7, and then filter the material to obtain castor oil polyoxyethylene ether sulfonate. The chemical reaction formula is as follows:

[0052]

[0053] S4. Add 25 g of the castor oil polyoxyethylene ether sulfonate obtained in step S3 to the reaction pot, start stirring, and add 15 g of isomeric fatty alcohol polyoxyethylene ether, 6 g of fatty amine polyoxyethylene ether, 4 g of hydroxycarboxylate, and 50 g of water in sequence while stirring. After fully stirring, filter the material to obtain a same-bath degreaser.

[0054] Example 4

[0055] A one-bath degreaser is prepared as follows:

[0056] S1. Add 82g of castor oil polyoxyethylene ether (EL-80), 18g of diethylene glycol monobutyl ether, and 5g of urea tetramethylammonium hydroxide to a clean reactor, ventilate with nitrogen, turn on the stirrer and stir. Heat the reactor to 40°C within 40min and stir at 40°C for 90min. During this period, add dispersed aminosulfonic acid in 3 portions.

[0057] S2. After the addition of the modifier is complete, slowly heat the reactor to 82°C and keep the temperature for 1 hour, then heat it to 135°C and keep the temperature for 4 hours;

[0058] S3. Take 2 mL of the product from the reactor and add it into 100 mL of 4°C pre-cooled water, stir, and observe the dissolution. After the solubility test of the product is qualified, cool the reactor to 805°C, mature the reaction for 1 hour, and then slowly cool the system temperature to 35°C. During the cooling process, add 1M NaOH to adjust the pH to 7, and then filter the material to obtain castor oil polyoxyethylene ether sulfonate. The chemical reaction formula is as follows:

[0059]

[0060] S4. Add 20 g of the castor oil polyoxyethylene ether sulfonate obtained in step S3 to the reaction pot, start stirring, and add 20 g of isomeric fatty alcohol polyoxyethylene ether, 5 g of fatty amine polyoxyethylene ether, 6 g of hydroxycarboxylate, and 39 g of water in sequence while stirring. After fully stirring, filter the material to obtain a same-bath degreaser.

[0061] Effect test

[0062] Knitting oil and waste engine oil were mixed in a volume ratio of 1:1 and then dripped onto a clean, 15cm×20cm white polyester knitted fabric. Ten drops were dripped onto the center of each fabric. After standing at room temperature for 5 hours, the experimental fabric was dried at 105°C for 30 minutes. A total of 12 experimental fabrics were prepared according to the above method.

[0063] 1 g of the same-bath degreaser prepared in Examples 1, 2, 3 and 4 was taken and added to a solution containing 1 L of water and 0.3 g / L of glacial acetic acid, respectively, and stirred to mix well to prepare a same-bath degreaser working solution.

[0064] The prepared experimental fabrics were immersed in the degreasing agent working solution of the above examples 1 to 4 at a bath ratio of 1:15, and degreasing was carried out according to the following process: soaking at 130℃ for 30min → washing with hot water at 90℃ twice → washing with water at room temperature → drying → rehumidification. The blank control was the fabric with oil stains that was not treated with degreasing agent. Some treatment results are shown in Figure 1 .

[0065] Depend on Figure 1 It can be seen that the fabric treated with the degreasing agent prepared in Example 3 has the highest whiteness, no visible oil stains, and the fabric surface is very clean, with the best effect. Next are the degreasing agents prepared in Examples 2, 4, and 1. The polyester knitted fabrics treated with the degreasing agents prepared in Examples 1 to 4 have no obvious oil stains on the fabric surface, no yellowing, and no oil stain re-staining.

[0066] Therefore, the one-bath deoiling agent provided by the present invention has good decontamination, degreasing and back-staining effects on textiles, is effective for various oil stains, and has a wide range of applications. After degreasing textiles, the fabric surface has good whiteness and no yellowing occurs. It does not contain phosphorus or APEO, is biodegradable, is environmentally friendly, and is green and pollution-free. It does not require the addition of an external defoaming agent, has good wetting and anti-foaming effects, has strong emulsifying ability, and has good compatibility with other surfactants and additives. The preparation method is simple and easy to operate, does not require high temperature and high pressure, has low equipment requirements, has a high safety factor, and can be produced on a large scale.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solutions of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A method for preparing a one-bath degreaser, characterized in that: The same-bath degreaser is composed of the following components in percentage by mass: 10%-20% castor oil polyoxyethylene ether sulfonate, 16%-24% castor oil polyoxyethylene ether, 8%-16% isomeric fatty alcohol polyoxyethylene ether, 4%-8% fatty amine polyoxyethylene ether, 8%-12% fatty alcohol polyoxyethylene ether sulfate, and 20%-54% water; Alternatively, the one-bath degreaser is composed of the following components in percentage by mass: 20%-30% castor oil polyoxyethylene ether sulfonate, 12%-20% isomeric fatty alcohol polyoxyethylene ether, 5%-10% fatty amine polyoxyethylene ether, 2%-6% hydroxycarboxylate, and 34%-61% water; The preparation method of the same-bath deoiling agent comprises the following steps: S1. Add castor oil polyoxyethylene ether, diethylene glycol monobutyl ether, and a catalyst to a clean reactor, purge with nitrogen, start stirring with a stirrer, slowly heat the reactor to 40°C, and stir at 40°C for 90 minutes. During this time, add a dispersed modifier in three portions. S2. After the addition of the modifier is complete, slowly heat the reactor to 80-85°C and keep the temperature for 1 hour, then heat it to 130-140°C and keep the temperature for 4-5 hours; S3. Take a sample to test the solubility of the product. If it is qualified, cool the reactor to 80-85°C, mature the reaction for 1 hour, and then slowly cool the system temperature to <50°C. Add an appropriate amount of alkali solution during the cooling process, and then filter the material to obtain castor oil polyoxyethylene ether sulfonate; S4, adding the castor oil polyoxyethylene ether sulfonate obtained in step S3 to the reaction pot, starting stirring, adding the remaining raw materials in proportion while stirring, stirring thoroughly, and filtering the discharged material to obtain a same-bath deoiling agent; In step S1, the mass ratio of castor oil polyoxyethylene ether to diethylene glycol monobutyl ether is 41:9, the catalyst is an amine, the slow heating refers to heating from room temperature to 40° C. within 30-50 minutes, and the modifier is aminosulfonic acid; The slow cooling in step S3 refers to reducing the system temperature to less than 50° C. within 30 minutes; and the appropriate amount of alkali solution refers to adding alkali solution until the pH of the system reaches 7.

0.

2. The method for preparing a one-bath deoiling agent according to claim 1, wherein: The filtration output mentioned above refers to filtration using 200-300 mesh nylon cloth.

3. Use of a one-bath deoiling agent prepared by the method for preparing a one-bath deoiling agent according to any one of claims 1 to 2 in deoiling textiles.

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