Bio-based rapid cold pad-batch scouring agent and preparation method thereof

Abstract

The invention belongs to the technical field of new materials, and particularly relates to a bio-based rapid cold pad-batch scouring agent and a preparation method thereof. The bio-based rapid cold pad-batch refining agent is prepared from the following raw materials in parts by mass: 450 to 550 parts of bio-based cardanol polyoxyethylene ether sodium aminobenzene sulfonate, 70 to 90 parts of cardanol polyoxyethylene ether, 8 to 13 parts of turpentine, 1 to 10 parts of hydrogen peroxide low-temperature catalyst, 2 to 10 parts of activating agent and 40 to 60 parts of demineralizing agent. The bio-based rapid cold pad-batch scouring agent provided by the invention is short in cold pad-batch time, the scouring process time is greatly saved, and the production efficiency is greatly improved. The bio-based rapid cold pad-batch scouring agent provided by the invention has excellent effects of permeating fabrics and emulsifying cotton wax and grease under the conditions of concentrated alkali and low temperature, and has a good cold pad-batch scouring effect.

Description

Technical Field

[0001] The invention belongs to the technical field of new materials, and in particular relates to a bio-based rapid cold pad-batch scouring agent and a preparation method thereof. Background Art

[0002] Dyeing and finishing is an important link in the knitting industry chain, among which energy conservation, emission reduction and environmental protection are the top priorities. Reducing energy consumption and improving production efficiency are the inevitable path to sustainable development. Traditional cotton knitted fabric scouring processing is mainly based on rope-shaped intermittent processing, usually carried out on equipment such as pull cylinders, overflow dyeing machines, air flow dyeing machines and liquid flow dyeing machines. The technology, equipment and process are relatively mature, but the process needs to be carried out at a high temperature of 95-100°C, and the energy (steam, electricity) and water resources are consumed in large quantities, and there are serious environmental pollution problems. Therefore, how to save energy and reduce consumption, save water and steam in the process of refining cotton knitted fabrics has always been a hot research direction in the industry.

[0003] The cold pad-batch process is an effective process for energy saving and consumption reduction. Compared with conventional processes, the cold pad-batch process has low temperature and high alkali concentration, and the penetration of alkali oxygen liquid into cotton grey cloth is more difficult, especially at low temperatures, the emulsification capacity of oils and waxes is low; therefore, the requirements for cold pad-batch scouring agents are very high. Cold pad-batch scouring agents are important auxiliary agents used in the cold pad-batch pretreatment process, but due to the limitations of the scouring agent performance, the traditional cold pad-batch requires 12-16 hours of stacking time. The long cold stacking time leads to low production efficiency, which seriously affects the promotion and use of the process. For example, Chinese patent application CN114016291A discloses a cold-stack pretreatment auxiliary agent, which comprises the following components by mass percentage: chelating dispersant 10-20%, high molecular weight amphoteric surfactant 10-25%, fatty alcohol polyoxyethylene ether 15-30%, isomeric alcohol polyoxyethylene ether 10-15%, organosilicon defoamer 0.1-0.3%, and the rest is water. The cold-stack pretreatment auxiliary agent provided by the invention needs to be stacked for 16 hours, and the cold-stack time is too long. Moreover, the scouring agent of the prior art has poor penetration into fabrics and emulsification effect on cotton wax and grease under concentrated alkali and low temperature conditions. Therefore, it is urgent to develop a fast low-temperature cold rolling batch scouring agent suitable for cotton fabric pretreatment scouring. Summary of the invention

[0004] In view of the deficiencies of the prior art, the object of the present invention is to provide a bio-based rapid cold pad-batch scouring agent and a preparation method thereof. The bio-based rapid cold pad-batch scouring agent provided by the present invention has a short cold-batch time, greatly saves the scouring process time, and greatly improves the production efficiency. The bio-based rapid cold pad-batch scouring agent provided by the present invention has excellent penetration into fabrics and emulsification effects on cotton wax and grease under concentrated alkali and low temperature conditions, and has a good cold-batch scouring effect.

[0005] The technical solution of the present invention is:

[0006] A bio-based rapid cold pad-batch scouring agent comprises the following raw materials and their weight proportions: 450-550 parts of bio-based cardanol polyoxyethylene ether sodium aminobenzene sulfonate, 70-90 parts of cardanol polyoxyethylene ether, 8-13 parts of turpentine, 1-10 parts of hydrogen peroxide low-temperature catalyst, 2-10 parts of activator and 40-60 parts of demineralizer.

[0007] Furthermore, the bio-based rapid cold pad-batch scouring agent comprises the following raw materials and their mass proportions: 500 parts of bio-based cardanol polyoxyethylene ether aminobenzene sulfonate sodium, 80 parts of cardanol polyoxyethylene ether, 10 parts of turpentine, 4 parts of hydrogen peroxide low-temperature catalyst, 7 parts of activator, and 50 parts of demineralizer.

[0008] Furthermore, the bio-based cardanol polyoxyethylene ether sodium aminobenzenesulfonate includes the following raw materials and their weight proportions: 275-320 parts of cardanol, 7-13 parts of strongly acidic ion exchange resin, 430-460 parts of double-ended epoxy polyether, and 180-210 parts of sodium p-aminobenzenesulfonate.

[0009] Furthermore, the preparation method of the bio-based cardanol polyoxyethylene ether aminobenzene sulfonate sodium is:

[0010] (1) Add cardanol and strongly acidic ion exchange resin to a reaction vessel, stir evenly, raise the temperature to 40-60° C., dropwise add double-terminal epoxy polyether, and keep warm after the dropwise addition is complete;

[0011] (2) After the heat preservation is completed, the catalyst strong acid ion exchange resin is separated by filtration, and a solvent is added to the obtained filtrate, sodium p-aminobenzenesulfonate is added, and the temperature is raised to 55-65° C., and the temperature is kept for 3.5-4.5 hours. Vacuuming, cooling, adding water, and adjusting the solid content are obtained.

[0012] Furthermore, in the preparation method of bio-based cardanol polyoxyethylene ether aminobenzene sulfonate sodium, the step (1) is kept warm for 3.5-4.5 hours.

[0013] Furthermore, in the method for preparing bio-based cardanol polyoxyethylene ether aminobenzene sulfonate sodium, the solvent in step (2) is acetone.

[0014] Furthermore, the preparation method of the hydrogen peroxide low-temperature catalyst is:

[0015] (A) dissolving copper salt in water to prepare a copper-modified solution with a mass concentration of 5-25%;

[0016] (B) adding water to a reaction vessel, adding sodium montmorillonite under stirring, stirring until uniformly dispersed, adding the copper-modified solution obtained in step (A), stirring for 5-8 hours, aging for 6-8 days, filtering, and obtaining the product.

[0017] Furthermore, in step (B) of the method for preparing the hydrogen peroxide low-temperature catalyst, the mass ratio of sodium montmorillonite to copper modified liquid is 5:1-5.

[0018] Furthermore, the activator is dicyandiamide, and the demineralizing agent is sodium gluconate.

[0019] The present invention also provides a method for preparing the bio-based rapid cold pad-batch scouring agent, comprising the following steps:

[0020] Add bio-based cardanol polyoxyethylene ether sodium aminobenzene sulfonate into the kettle, start stirring, add cardanol polyoxyethylene ether and turpentine, stir for 25-40 minutes, add hydrogen peroxide low-temperature catalyst and activator, keep stirring for 55-70 minutes, add demineralizer, add water, adjust the solid content, and obtain.

[0021] The invention uses cashew phenol, a waste material of cashew processing, a strongly acidic ion exchange resin, a double-ended epoxy polyether and sodium p-aminobenzenesulfonate as raw materials to synthesize a novel bio-based anionic alkali-resistant surfactant, namely bio-based cardanol polyoxyethylene ether sodium aminobenzenesulfonate. The reaction principle is as follows: under the catalytic condition of the strongly acidic ion exchange resin, one of the epoxy groups of the double-ended epoxy polyether is ring-opened and reacts with the phenolic hydroxyl group of cardanol to obtain a single-ended epoxy cardanol polyether; in the next step, sodium p-aminobenzenesulfonate is added, and the epoxy group of the single-ended epoxy cardanol polyether reacts with the amino group of the sodium p-aminobenzenesulfonate to finally obtain the bio-based cardanol polyoxyethylene ether sodium aminobenzenesulfonate.

[0022] Among them, the double-terminal epoxy polyether structural formula is:

[0023]

[0024] Wherein, m=0-5, n=5-15;

[0025] The structural formula of cardanol is:

[0026] Wherein, n = 0 to 3;

[0027] The structural formula of sodium p-aminobenzenesulfonate is:

[0028]

[0029] Taking the structural formula of cardanol where n=2 as an example, the reaction equation of the present invention is:

[0030]

[0031] The bio-based cardanol polyoxyethylene ether aminobenzene sulfonate sodium prepared by the invention has excellent alkali resistance, emulsification, permeability and dispersibility at room temperature to 50°C, and is very suitable as a surfactant component of a cold batch scouring agent, thereby solving the technical problems of the prior art scouring agent having poor permeability to fabrics under concentrated alkali and low temperature conditions and poor emulsification effect on cotton wax and grease.

[0032] The invention uses a self-made hydrogen peroxide low-temperature catalyst based on natural mineral montmorillonite and an activator dicyandiamide to form a binary hydrogen peroxide activation system, which is applied to a cold pad-batch scouring agent, effectively improving the efficiency of hydrogen peroxide in rapidly releasing active oxygen at low temperatures, shortening the time of low-temperature cold stacking from the traditional 12-16 hours to 3-4 hours, greatly shortening the process time, greatly improving production efficiency, and solving the problem of long stacking time of the scouring agent in the prior art. Moreover, the cold pad-batch scouring agent of the invention is used for cold stacking for 3-4 hours, and the performance of the fabric after scouring is equivalent to the scouring effect of conventional cold stacking for 12-16 hours.

[0033] The natural plant raw material turpentine added in the present invention can not only play a role in defoaming, but also is less likely to break the emulsion and form silicon spots adsorbed on the fabric and difficult to clean in the strong alkaline refining process compared with the traditional organosilicon defoamer. Moreover, under the low temperature and strong alkaline conditions of cold stacking, it can quickly help the additive penetrate into the interior of the fabric, further shortening the cold stacking time.

[0034] The present invention selects sodium gluconate as the demineralizing agent, which can prevent the phenomenon of rapid decomposition of hydrogen peroxide due to metal ion catalysis under strong alkaline conditions, causing holes in the fabric.

[0035] Compared with the prior art, the present invention has the following advantages:

[0036] (1) The alkali-resistant anionic surfactant, nonionic surfactant, catalyst, and demineralizing agent used in the bio-based rapid cold pad-batch scouring agent provided by the present invention are all natural, non-food chain, and annually renewable bio-based materials. Compared with traditional scouring agents based on petrochemical raw materials, they can greatly reduce carbon emissions and contribute to the global greenhouse gas emission reduction plan.

[0037] (2) The bio-based rapid cold pad-batch scouring agent provided by the present invention has a short cold-batch time, which greatly saves the scouring process time and greatly improves production efficiency.

[0038] (3) The bio-based rapid cold pad-batch scouring agent provided by the present invention has excellent cold-batch scouring effect. The fabric treated with the scouring agent of the present invention has achieved the effect of the traditional cold-batch process in terms of whiteness, hair effect and desizing rate. The desizing rate can reach level 7, and some indicators are even better than those of the traditional process.

[0039] (4) The present invention realizes a one-bath scouring and alkali shrinking process. The surface of the fabric after scouring is brighter and has a mercerizing effect. The shrinkage rate is also significantly smaller than that of the conventional process, which has significant benefits in improving fabric quality and increasing the added value of textiles. DETAILED DESCRIPTION

[0040] The present invention is further illustrated below through the description of specific implementation modes, but this is not a limitation of the present invention. Those skilled in the art can make various modifications or improvements based on the basic idea of ​​the present invention, but as long as they do not deviate from the basic idea of ​​the present invention, they are all within the scope of the present invention.

[0041] The raw materials used in the present invention are commercially available unless otherwise specified. For example, cardanol can be purchased from Cardolite Chemical (Zhuhai) Co., Ltd., model: NX-2024; sodium montmorillonite can be purchased from Zhejiang Fenghong New Materials Co., Ltd., model: SMP-HV / HV1; cardanol polyoxyethylene ether can be purchased from Changshu Naisu Biomaterial Technology Co., Ltd., model NFS7; double-terminated epoxy polyether (polyethylene glycol diglycidyl ether) can be purchased from Suzhou Senfida Chemical Co., Ltd., model XY215; fatty alcohol polyoxyethylene ether can be purchased from Lianhong New Materials Technology Co., Ltd., model: AEO9; strong acid ion exchange resin can be purchased from Langfang New Era Chemical Building Materials Co., Ltd., product model: 001×7 strong acid cation exchange resin; turpentine can be purchased from Jiangxi Jiajinlin Chemical Co., Ltd.

[0042] Example 1: A bio-based rapid cold pad-batch scouring agent

[0043] The bio-based rapid cold pad-batch scouring agent comprises the following raw materials and their weight proportions: 450 parts of bio-based cardanol polyoxyethylene ether aminobenzene sulfonate sodium, 70 parts of cardanol polyoxyethylene ether, 8 parts of turpentine, 1 part of hydrogen peroxide low-temperature catalyst, 2 parts of activator, and 40 parts of demineralizer; the activator is dicyandiamide, and the demineralizer is sodium gluconate.

[0044] The bio-based cardanol polyoxyethylene ether sodium aminobenzenesulfonate comprises the following raw materials and their weight proportions: 275 parts of cardanol, 7 parts of strongly acidic ion exchange resin, 430 parts of double-ended epoxy polyether, and 180 parts of sodium p-aminobenzenesulfonate.

[0045] The preparation method of the bio-based cardanol polyoxyethylene ether aminobenzene sulfonate sodium is as follows:

[0046] (1) Add cardanol and strongly acidic ion exchange resin to a reaction kettle, stir evenly, heat to 40° C., dropwise add double-terminal epoxy polyether, and keep warm for 3.5 hours after the addition is complete;

[0047] (2) After the insulation is completed, the catalyst strong acid ion exchange resin is separated by filtration for use in the next reaction. The solvent acetone is added to the obtained filtrate, sodium p-aminobenzenesulfonate is added, the temperature is raised to 55° C., and the temperature is maintained for 3.5 hours. The solvent acetone is evaporated by vacuum, the temperature is lowered to below 40° C., deionized water is added, and the solid content is adjusted to 50%.

[0048] The preparation method of the hydrogen peroxide low-temperature catalyst is:

[0049] (A) dissolving copper sulfate pentahydrate in deionized water to prepare a copper-modified solution with a mass concentration of 5%;

[0050] (B) Deionized water is added to a reaction kettle, and sodium montmorillonite is added under stirring, the mass of the sodium montmorillonite is 6.25% of the mass of the deionized water, and the mixture is stirred until uniformly dispersed. The copper-modified liquid obtained in step (A) is added, and the mass ratio of the sodium montmorillonite to the copper-modified liquid is 5:1. The mixture is stirred for 5 hours, aged for 6 days, and filtered by a filter press. The filter cake is the hydrogen peroxide low-temperature catalyst.

[0051] The preparation method of the bio-based rapid cold pad-batch scouring agent comprises the following steps:

[0052] Add bio-based cardanol polyoxyethylene ether sodium aminobenzene sulfonate into the compounding kettle, start stirring, add cardanol polyoxyethylene ether and turpentine, stir for 25 minutes, add hydrogen peroxide low-temperature catalyst and activator, keep stirring for 55 minutes, add demineralizer, add water, adjust the solid content to 40%, and obtain.

[0053] Example 2: A bio-based rapid cold pad-batch scouring agent

[0054] The bio-based rapid cold pad-batch scouring agent comprises the following raw materials and their weight proportions: 550 parts of bio-based cardanol polyoxyethylene ether aminobenzene sulfonate sodium, 90 parts of cardanol polyoxyethylene ether, 13 parts of turpentine, 10 parts of hydrogen peroxide low-temperature catalyst, 10 parts of activator, and 60 parts of demineralizer; the activator is dicyandiamide, and the demineralizer is sodium gluconate.

[0055] The bio-based cardanol polyoxyethylene ether sodium aminobenzenesulfonate comprises the following raw materials and their weight proportions: 320 parts of cardanol, 13 parts of strongly acidic ion exchange resin, 460 parts of double-ended epoxy polyether, and 210 parts of sodium p-aminobenzenesulfonate.

[0056] The preparation method of the bio-based cardanol polyoxyethylene ether aminobenzene sulfonate sodium is as follows:

[0057] (1) Add cardanol and strongly acidic ion exchange resin to a reaction kettle, stir evenly, heat to 60° C., dropwise add double-terminal epoxy polyether, and keep warm for 4.5 hours after the addition is complete;

[0058] (2) After the insulation is completed, the catalyst strong acid ion exchange resin is separated by filtration for use in the next reaction. The solvent acetone is added to the obtained filtrate, sodium p-aminobenzenesulfonate is added, the temperature is raised to 65° C., the temperature is maintained for 4.5 hours, the solvent acetone is evaporated by vacuum, the temperature is lowered to below 40° C., deionized water is added, and the solid content is adjusted to 50%.

[0059] The preparation method of the hydrogen peroxide low-temperature catalyst is:

[0060] (A) dissolving copper sulfate pentahydrate in deionized water to prepare a copper-modified solution with a mass concentration of 25%;

[0061] (B) Deionized water is added to the reaction kettle, and sodium montmorillonite is added under stirring, the mass of the sodium montmorillonite is 6.25% of the mass of the deionized water, and the mixture is stirred until uniformly dispersed. The copper modified liquid obtained in step (A) is added, and the mass ratio of the sodium montmorillonite to the copper modified liquid is 5:5. The mixture is stirred for 8 hours, aged for 8 days, filtered by a filter press, and the filter cake is the hydrogen peroxide low-temperature catalyst.

[0062] The preparation method of the bio-based rapid cold pad-batch scouring agent comprises the following steps:

[0063] Add bio-based cardanol polyoxyethylene ether sodium aminobenzene sulfonate into the compounding kettle, start stirring, add cardanol polyoxyethylene ether and turpentine, stir for 40 minutes, add hydrogen peroxide low-temperature catalyst and activator, keep stirring for 70 minutes, add demineralizer, add water, adjust the solid content to 40%, and obtain.

[0064] Example 3: A bio-based rapid cold pad-batch scouring agent

[0065] The bio-based rapid cold pad-batch scouring agent comprises the following raw materials and their weight fractions: 500 parts of bio-based cardanol polyoxyethylene ether aminobenzene sulfonate sodium, 80 parts of cardanol polyoxyethylene ether, 10 parts of turpentine, 4 parts of hydrogen peroxide low-temperature catalyst, 7 parts of activator, and 50 parts of demineralizer; the activator is dicyandiamide, and the demineralizer is sodium gluconate.

[0066] The bio-based cardanol polyoxyethylene ether sodium aminobenzenesulfonate comprises the following raw materials and their weight proportions: 302 parts of cardanol, 10 parts of strongly acidic ion exchange resin, 448 parts of double-terminal epoxy polyether, and 195 parts of sodium p-aminobenzenesulfonate.

[0067] The preparation method of the bio-based cardanol polyoxyethylene ether aminobenzene sulfonate sodium is as follows:

[0068] (1) Add cardanol and strongly acidic ion exchange resin to a reaction kettle, stir evenly, heat to 50° C., dropwise add double-terminal epoxy polyether, and keep warm for 4 hours after the addition is complete;

[0069] (2) After the insulation is completed, the catalyst strong acid ion exchange resin is separated by filtration for use in the next reaction. The solvent acetone is added to the obtained filtrate, sodium p-aminobenzenesulfonate is added, the temperature is raised to 60° C., the temperature is maintained for 4 hours, the solvent acetone is evaporated by vacuum, the temperature is lowered to below 40° C., deionized water is added, and the solid content is adjusted to 50%.

[0070] The preparation method of the hydrogen peroxide low-temperature catalyst is:

[0071] (A) dissolving copper sulfate pentahydrate in deionized water to prepare a copper-modified solution with a mass concentration of 15%;

[0072] (B) Deionized water is added to a reaction kettle, and sodium montmorillonite is added under stirring, the mass of the sodium montmorillonite is 6.25% of the mass of the deionized water, and the mixture is stirred until uniformly dispersed. The copper modified liquid obtained in step (A) is added, and the mass ratio of the sodium montmorillonite to the copper modified liquid is 5:2. The mixture is stirred for 6 hours, aged for 7 days, and filtered by a filter press. The filter cake is the hydrogen peroxide low-temperature catalyst.

[0073] The preparation method of the bio-based rapid cold pad-batch scouring agent comprises the following steps:

[0074] Add bio-based cardanol polyoxyethylene ether sodium aminobenzene sulfonate into the compounding kettle, start stirring, add cardanol polyoxyethylene ether and turpentine, stir for 30 minutes, add hydrogen peroxide low-temperature catalyst and activator, keep stirring for 60 minutes, add demineralizer, add water, adjust the solid content to 40%, and obtain.

[0075] Comparative Example 1: A cold pad-batch scouring agent

[0076] The cold pad-batch scouring agent comprises the following raw materials and their weight proportions: 580 parts of bio-based cardanol polyoxyethylene ether aminobenzene sulfonate sodium, 10 parts of turpentine, 4 parts of hydrogen peroxide low-temperature catalyst, 7 parts of activator, and 50 parts of demineralizer; the activator is dicyandiamide, and the demineralizer is sodium gluconate.

[0077] The bio-based cardanol polyoxyethylene ether sodium aminobenzenesulfonate comprises the following raw materials and their weight proportions: 302 parts of cardanol, 10 parts of strongly acidic ion exchange resin, 448 parts of double-terminal epoxy polyether, and 195 parts of sodium p-aminobenzenesulfonate.

[0078] The preparation method of the bio-based cardanol polyoxyethylene ether aminobenzene sulfonate sodium, hydrogen peroxide low-temperature catalyst, and cold pad-batch scouring agent is similar to that in Example 3.

[0079] Comparative Example 2: A cold pad-batch scouring agent

[0080] The cold pad-batch scouring agent comprises the following raw materials and their mass fractions: 580 parts of cardanol polyoxyethylene ether, 10 parts of turpentine, 4 parts of hydrogen peroxide low-temperature catalyst, 7 parts of activator, and 50 parts of demineralizer; the activator is dicyandiamide, and the demineralizer is sodium gluconate.

[0081] The preparation methods of the hydrogen peroxide low-temperature catalyst and the cold pad-batch scouring agent are similar to those in Example 3.

[0082] Comparative Example 3: A cold pad-batch scouring agent

[0083] The cold pad-batch scouring agent comprises the following raw materials and their weight proportions: 500 parts of sodium dodecylbenzene sulfonate, 80 parts of cardanol polyoxyethylene ether, 10 parts of turpentine, 4 parts of hydrogen peroxide low-temperature catalyst, 7 parts of activator, and 50 parts of demineralizer; the activator is dicyandiamide, and the demineralizer is sodium gluconate.

[0084] The preparation methods of the hydrogen peroxide low-temperature catalyst and the cold pad-batch scouring agent are similar to those in Example 3.

[0085] The difference from Example 3 is that the bio-based cardanol polyoxyethylene ether aminobenzene sulfonate is replaced by sodium dodecylbenzene sulfonate.

[0086] Comparative Example 4: A Rapid Cold Pad Batch Scouring Agent

[0087] The cold pad-batch scouring agent comprises the following raw materials and their weight proportions: 500 parts of bio-based cardanol polyoxyethylene ether aminobenzene sulfonate sodium, 80 parts of fatty alcohol polyoxyethylene ether, 10 parts of turpentine, 4 parts of hydrogen peroxide low-temperature catalyst, 7 parts of activator, and 50 parts of demineralizer; the activator is dicyandiamide, and the demineralizer is sodium gluconate.

[0088] The bio-based cardanol polyoxyethylene ether sodium aminobenzenesulfonate comprises the following raw materials and their weight proportions: 302 parts of cardanol, 10 parts of strongly acidic ion exchange resin, 448 parts of double-terminal epoxy polyether, and 195 parts of sodium p-aminobenzenesulfonate.

[0089] The preparation method of the bio-based cardanol polyoxyethylene ether aminobenzene sulfonate sodium, hydrogen peroxide low-temperature catalyst, and cold pad-batch scouring agent is similar to that in Example 3.

[0090] The difference from Example 3 is that the cardanol polyoxyethylene ether is replaced by fatty alcohol polyoxyethylene ether.

[0091] Comparative Example 5: A cold pad-batch scouring agent

[0092] The cold pad-batch scouring agent comprises the following raw materials and their weight proportions: 500 parts of bio-based cardanol polyoxyethylene ether sodium aminobenzenesulfonate, 80 parts of cardanol polyoxyethylene ether, 10 parts of turpentine, 4 parts of ferrous gluconate, 7 parts of activator, and 50 parts of demineralizer; the activator is dicyandiamide, and the demineralizer is sodium gluconate.

[0093] The bio-based cardanol polyoxyethylene ether sodium aminobenzenesulfonate comprises the following raw materials and their weight proportions: 302 parts of cardanol, 10 parts of strongly acidic ion exchange resin, 448 parts of double-terminal epoxy polyether, and 195 parts of sodium p-aminobenzenesulfonate.

[0094] The preparation method of the bio-based cardanol polyoxyethylene ether aminobenzene sulfonate sodium and cold pad-batch scouring agent is similar to that in Example 3.

[0095] The difference from Example 3 is that the hydrogen peroxide low-temperature catalyst is replaced by ferrous gluconate.

[0096] Test Example 1: Comparison of Scouring Effects

[0097] 1. Test materials: cold pad-batch scouring agents prepared in Examples 1-3 and Comparative Examples 1-5, and conventional high-temperature scouring agent SCOUTEX SL-C conc degreasing scouring agent (produced by Zhuhai Huada Haohong New Materials Co., Ltd.).

[0098] 2. Test methods:

[0099] Fabric type: 26S / 2 cotton stretched plain weave;

[0100] Equipment: P-A0 vertical small padder (Foshan Yanuo Precision Machinery Manufacturing Co., Ltd.), AS-24 normal temperature oscillating sample dyeing machine (Foshan Yanuo Precision Machinery Manufacturing Co., Ltd.).

[0101] The cotton fabric was subjected to cold pad-batch scouring treatment using the cold pad-batch scouring agents prepared in Examples 1-3 and Comparative Examples 1-5, and the cotton fabric was subjected to high-temperature scouring treatment using a conventional high-temperature scouring agent, SCOUTEX SL-C conc oil removal scouring agent.

[0102] The specific process is:

[0103] (1) Cold rolling batch refining:

[0104] NaOH (100%) 18 g / L

[0105] H 2 O 2 (50%)50g / L

[0106] Cold pad batch scouring agent 15g / L

[0107] Test equipment: P-A0 vertical small rolling mill (Foshan Yanuo Precision Machinery Manufacturing Co., Ltd.)

[0108] Test process: one dip and one roll, roll rate 100%

[0109] Stack at 40℃ for 3 hours;

[0110] (2) High temperature refining:

[0111] NaOH (100%) 2 g / L

[0112] H 2 O 2 (50%)3g / L

[0113] SCOUTEX SL-C conc degreasing scouring agent 0.6g / L

[0114] Test equipment: AS-24 normal temperature oscillating sample dyeing machine (Foshan Yanuo Precision Machinery Manufacturing Co., Ltd.)

[0115] Experimental process: bath ratio 1:10, scouring at 98℃ for 40min.

[0116] The treated cotton fabrics were subjected to performance tests.

[0117] (1) CIE whiteness: Tested according to GB / T17644-2008 “Test method for whiteness and chromaticity of textile fibers”.

[0118] (2) Wicking height: refer to FZ / T01071-2008 “Test method for capillary effect of textiles” for testing.

[0119] 3. Test results: The test results are shown in Table 1.

[0120] Table 1: Comparison of scouring effects

[0121]

[0122] As can be seen from Table 1, the CIE whiteness of the cotton fabric treated with the cold pad-batch scouring agent prepared in Examples 1-3 of the present invention is relatively high, among which Example 3 has the highest CIE whiteness and is the best embodiment of the present invention; the CIE whiteness of Example 3 of the present invention is significantly higher than that of Comparative Example 2 and Comparative Example 5, and higher than that of Comparative Example 1, Comparative Example 3, Comparative Example 4 and conventional high-temperature scouring agents; the 30-min wicking height of the cotton fabric treated with the bio-based rapid cold pad-batch scouring agent prepared in Example 3 of the present invention is significantly higher than that of Comparative Examples 1-5, and better than conventional high-temperature scouring agents.

[0123] Test Example 2: Bursting Strength Test

[0124] 1. Test materials: cold pad-batch scouring agents prepared in Examples 1-3, Comparative Examples 3 and 5, and conventional high-temperature scouring agent SCOUTEX SL-C conc degreasing scouring agent (produced by Zhuhai Huada Haohong New Materials Co., Ltd.).

[0125] 2. Test methods

[0126] The test method is the same as that in Test Example 1. The treated cotton fabric is tested for bursting strength. The bursting strength is tested in accordance with the method of GB / T19976-2005 "Determination of bursting strength of textiles - Steel ball method".

[0127] 3. Test results: The test results are shown in Table 2.

[0128] Table 2: Comparison of bursting strength test results

[0129]

[0130] Bursting strength is one of the important assessment indicators, which directly reflects the durability of knitted fabrics when deformed and broken by external pressure. As can be seen from Table 2, the bursting strength of cotton fabrics treated with the bio-based rapid cold pad-batch scouring agent prepared in Examples 1-3 of the present invention is significantly higher than that of Comparative Examples 3 and 5, as well as conventional high-temperature scouring agents. It can be seen that the bursting strength of the fabrics is slightly damaged by the cold pad-batch scouring treatment with the scouring agent of the present invention, and the cotton fabrics treated with the scouring agent of the present invention are more durable.

Claims

1. A bio-based rapid cold pad-batch scouring agent, characterized in that: The invention comprises the following raw materials and their weight proportions: 450-550 parts of bio-based cardanol polyoxyethylene ether aminobenzene sulfonate sodium, 70-90 parts of cardanol polyoxyethylene ether, 8-13 parts of turpentine oil, 1-10 parts of hydrogen peroxide low-temperature catalyst, 2-10 parts of activator and 40-60 parts of demineralizer.

2. The bio-based rapid cold pad-batch scouring agent according to claim 1, characterized in that: The method comprises the following raw materials and their weight proportions: 500 parts of bio-based cardanol polyoxyethylene ether sodium aminobenzene sulfonate, 80 parts of cardanol polyoxyethylene ether, 10 parts of turpentine oil, 4 parts of hydrogen peroxide low-temperature catalyst, 7 parts of activator and 50 parts of demineralizer.

3. The bio-based rapid cold pad-batch scouring agent according to claim 1 or 2, characterized in that: The bio-based cardanol polyoxyethylene ether sodium aminobenzenesulfonate comprises the following raw materials and their weight proportions: 275-320 parts of cardanol, 7-13 parts of strongly acidic ion exchange resin, 430-460 parts of double-terminal epoxy polyether, and 180-210 parts of sodium p-aminobenzenesulfonate.

4. The bio-based rapid cold pad-batch scouring agent according to claim 3, characterized in that: The preparation method of the bio-based cardanol polyoxyethylene ether aminobenzene sulfonate sodium is as follows: (1) Add cardanol and strongly acidic ion exchange resin to a reaction vessel, stir evenly, raise the temperature to 40-60° C., dropwise add double-terminal epoxy polyether, and keep warm after the dropwise addition is complete; (2) After the heat preservation is completed, the catalyst strong acid ion exchange resin is separated by filtration, and a solvent is added to the obtained filtrate, sodium p-aminobenzenesulfonate is added, and the temperature is raised to 55-65° C., and the temperature is kept for 3.5-4.5 hours. Vacuuming, cooling, adding water, and adjusting the solid content are obtained.

5. The bio-based rapid cold pad-batch scouring agent according to claim 4, characterized in that: In the preparation method of bio-based cardanol polyoxyethylene ether aminobenzene sulfonate sodium, the step (1) is to keep warm for 3.5-4.5 hours.

6. The bio-based rapid cold pad-batch scouring agent according to claim 4, characterized in that: In the method for preparing bio-based cardanol polyoxyethylene ether aminobenzene sulfonate sodium, the solvent in step (2) is acetone.

7. The bio-based rapid cold pad-batch scouring agent according to claim 1 or 2, characterized in that: The preparation method of the hydrogen peroxide low-temperature catalyst is: (A) dissolving copper salt in water to prepare a copper-modified solution with a mass concentration of 5-25%; (B) adding water to a reaction vessel, adding sodium montmorillonite under stirring, stirring until uniformly dispersed, adding the copper-modified solution obtained in step (A), stirring for 5-8 hours, aging for 6-8 days, filtering, and obtaining the product.

8. The bio-based rapid cold pad-batch scouring agent according to claim 7, characterized in that: In step (B) of the method for preparing the hydrogen peroxide low-temperature catalyst, the mass ratio of sodium montmorillonite to copper modified liquid is 5:1-5.

9. The bio-based rapid cold pad-batch scouring agent according to claim 1 or 2, characterized in that: The activator is dicyandiamide, and the demineralizing agent is sodium gluconate.

10. The method for preparing a bio-based rapid cold pad-batch scouring agent according to any one of claims 1 to 9, characterized in that: The following steps are involved: Add bio-based cardanol polyoxyethylene ether sodium aminobenzene sulfonate into the kettle, start stirring, add cardanol polyoxyethylene ether and turpentine, stir for 25-40 minutes, add hydrogen peroxide low-temperature catalyst and activator, keep stirring for 55-70 minutes, add demineralizer, add water, adjust the solid content, and obtain.

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