CN-121976388-A - Pretreatment scouring agent for non-phosphorus cotton fabric and application thereof

Abstract

The invention provides a phosphorus-free cotton fabric pretreatment scouring agent and application thereof, and belongs to the technical field of textile assistants. The cotton fabric pretreatment scouring agent comprises the following preparation raw materials of 10-15 parts of nonionic surfactant, 5-10 parts of anionic surfactant, 2 parts of chelating agent and 73-83 parts of deionized water, wherein the nonionic surfactant is an isomeric alcohol alkyl xyloside surfactant, and the anionic surfactant is fatty alcohol polyoxyethylene ether carboxylate. The invention selects the alkyl xyloside and the fatty alcohol polyoxyethylene ether carboxylate which are friendly to the environment as main active matters, provides the scouring agent which is not only easy to biodegrade, but also has high permeability, high-concentration strong alkali resistance and quick defoaming, can lead the pretreatment process of spinning to be simpler, more environment-friendly, safe and nontoxic, is friendly to the environment, and has better application prospect.

Inventors

• WU ZHIYU
• ZHOU YUAN
• QIN ZIYU
• YANG XIUQUAN

Assignees

• 中国日用化学研究院有限公司

Dates

Publication Date

20260505

Application Date

20260107

Claims (8)

1. 1. The phosphorus-free cotton fabric pretreatment scouring agent is characterized by comprising the following components in parts by mass: 10-15 parts of nonionic surfactant; 5-10 parts of anionic surfactant; 1-5 parts of chelating agent; 73-83 parts of water; The nonionic surfactant is an isomeric alcohol alkyl xyloside; the anionic surfactant is fatty alcohol polyoxyethylene ether carboxylate.
2. 2. The phosphorus-free cotton fabric pretreatment scouring agent of claim 1, wherein the isomeric alcohol alkyl xyloside is 2-propyl heptyl alkyl xyloside having the structural formula: 。
3. 3. The phosphorus-free cotton fabric pretreatment scouring agent according to claim 1 or 2, wherein the fatty alcohol-polyoxyethylene ether carboxylate is an isomeric tridecanol polyoxyethylene ether carboxylate containing 7 EO on average, and has the following structural formula: ; wherein n is 7 and R is isomeric tridecyl.
4. 4. The phosphorus-free cotton fabric pretreatment scouring agent according to claim 3, wherein the chelating agent is EDTA and sodium citrate, and the mass ratio of EDTA to sodium citrate is 1.5-2.5:0.5-1.5.
5. 5. The application of the phosphorus-free cotton fabric pretreatment scouring agent in cotton fabric pretreatment according to any one of claims 1-4, which is characterized by comprising the following steps of preparing working solution from sodium hydroxide, hydrogen peroxide solution, cotton fabric pretreatment scouring agent and water to pretreat cotton fabric.
6. 6. The use of the phosphorus-free cotton fabric pretreatment scouring agent according to claim 5, wherein the concentration of the hydrogen peroxide solution is 28-32wt%; The concentration of hydrogen peroxide in the working solution is 5.0-7.0 g/L.
7. 7. The use of the phosphorus-free cotton fabric pretreatment scouring agent according to claim 6 in cotton fabric pretreatment, wherein the concentration of the cotton fabric pretreatment scouring agent in the working solution is 1.5-2.5 g/L.
8. 8. The use of the phosphorus-free cotton fabric pretreatment scouring agent according to claim 5 or 7, wherein the pH of the working fluid is 10-12.

Description

Pretreatment scouring agent for non-phosphorus cotton fabric and application thereof Technical Field The invention relates to the technical field of textile assistants, in particular to a phosphorus-free cotton fabric pretreatment scouring agent and application thereof. Background The traditional cotton fabric pretreatment process comprises three processes of desizing, scouring and bleaching, and is completed by three working procedures, the working procedures are complicated, the efficiency is low, the energy consumption is high, and the traditional cotton fabric pretreatment process is gradually replaced by a short-flow desizing, scouring and bleaching one-step process. The one-step process has the advantages of short flow, energy conservation and high efficiency, but the traditional scouring agent has the defects of more foam and poor permeability in the one-step process, so the one-step process has higher requirements on the performance of the scouring agent, and the scouring agent is required to have excellent permeability, high-concentration and strong alkalinity resistance and low foam performance. Along with the increasingly strict environmental protection regulations, the requirements of the textile industry on the environment protection, non-toxicity and easy biodegradation of the auxiliary agent are promoted to be higher and higher, so that the negative influence of the auxiliary agent on the environment is reduced. Therefore, on the premise of meeting the scouring effect, the scouring agent needs to meet the requirements of excellent permeability, high-concentration strong alkalinity resistance and low foam resistance, and is nontoxic and harmless to the environment and operators. Therefore, how to obtain a phosphorus-free cotton fabric pretreatment scouring agent and application thereof is a technical problem to be solved at present. Disclosure of Invention The invention aims to provide a phosphorus-free cotton fabric pretreatment scouring agent and application thereof, which are used for solving the technical problems of more foam, poor permeability and poor high-concentration and strong alkali resistance of the traditional scouring agent. In order to achieve the above object, the present invention provides the following technical solutions: the invention provides a phosphorus-free cotton fabric pretreatment scouring agent which comprises the following components in parts by mass: 10-15 parts of nonionic surfactant; 5-10 parts of anionic surfactant; 1-5 parts of chelating agent; 73-83 parts of water; The nonionic surfactant is an isomeric alcohol alkyl xyloside; the anionic surfactant is fatty alcohol polyoxyethylene ether carboxylate. Further, the isomeric alcohol alkyl xyloside is 2-propyl heptyl alkyl xyloside, and the structural formula is as follows: 。 Further, the fatty alcohol polyoxyethylene ether carboxylate is an isomeric tridecanol polyoxyethylene ether carboxylate containing 7 EO on average, and the structural formula is as follows: ; wherein n is 7 and R is isomeric tridecyl. Further, the chelating agent is EDTA and sodium citrate, and the mass ratio of the EDTA to the sodium citrate is 1.5-2.5:0.5-1.5. The invention also provides application of the phosphorus-free cotton fabric pretreatment scouring agent in cotton fabric pretreatment, which comprises the following steps of preparing working solution from sodium hydroxide, hydrogen peroxide solution, cotton fabric pretreatment scouring agent and water to pretreat cotton fabric. Further, the concentration of the hydrogen peroxide solution is 28-32wt%; The concentration of hydrogen peroxide in the working solution is 5.0-7.0 g/L. Further, the concentration of the cotton fabric pretreatment scouring agent in the working solution is 1.5-2.5 g/L. Further, the pH of the working solution is 10-12. The invention has the beneficial effects that: according to the invention, the environment-friendly alkyl xyloside and fatty alcohol polyoxyethylene ether carboxylate are selected as main active substances, and the two types of surfactants are green surfactants, so that the surfactant has the property of easy biodegradation, and the two types of surfactants after compounding act synergistically to obtain the scouring agent which is not only easy to biodegrade, but also has the advantages of high permeability, high-concentration alkali resistance and low foaming. The scouring agent disclosed by the invention not only has a high scouring effect, but also is nontoxic and harmless to the environment and operators, and can play a role in energy conservation and emission reduction in the actual scouring process. Detailed Description The invention provides a phosphorus-free cotton fabric pretreatment scouring agent which comprises the following components in parts by mass: 10-15 parts of nonionic surfactant; 5-10 parts of anionic surfactant; 1-5 parts of chelating agent; 73-83 parts of water; The nonionic surfactant is an isomeric alcohol alkyl xylos