A kind of soap detergent for polyester-cotton fabric without reducing cleaning

Abstract

The invention relates to the technical field of textile auxiliaries, and in particular to a soaping agent for polyester-cotton fabrics free of reduction cleaning, comprising the following raw materials in parts by weight: 23-25% of sodium acrylate-vinyl acetate random copolymer, 10-12% of castor oil polyoxyethylene ether, 3-5% of polyvinyl pyrrolidone, and the balance of water. The soaping agent for polyester-cotton fabrics free of reduction cleaning is prepared by using sodium acrylate-vinyl acetate random copolymer, castor oil polyoxyethylene ether and polyvinyl pyrrolidone as raw materials, and is used for soaping after one-bath two-step dyeing of polyester-cotton, thereby eliminating the reduction cleaning and neutralization steps after dyeing and washing in conventional processes, shortening the process time, saving energy, and having little effect on the color of fabrics.

Description

Technical Field

[0001] The invention relates to the technical field of textile auxiliaries, in particular to a reduction-free cleaning soaping agent for polyester-cotton fabrics. Background Art

[0002] Polyester-cotton fabric is a textile fabric with a large consumption. It not only maintains the characteristics of polyester fiber such as high strength, good elastic recovery in dry and wet states, and dimensional stability, but also has the advantages of cotton fiber such as moisture absorption, softness and breathability, and occupies a very important position in the market.

[0003] At present, there are also some problems in the production of polyester-cotton fabrics. Polyester fiber is a hydrophobic fiber, and the dyes used can only be non-water-soluble disperse dyes. Cotton is a hydrophilic fiber, and the commonly used dyes are water-soluble reactive dyes. Therefore, polyester-cotton blended fabrics generally adopt the disperse / reactive two-bath two-step dyeing process. First, dye the polyester under weak acid conditions, and then use caustic soda / insurance powder for reduction cleaning to remove the floating color of the disperse dye on the polyester and improve the color fastness to water washing; after acid neutralization, dye the cotton component with reactive dyes, and finally soap, wash and fix the color. The process has little mutual influence between dyes, and the process conditions are easy to control. A higher dyeing percentage and good dyeing effect can be obtained, but the disadvantages are that the process is cumbersome, energy consumption is high, and wastewater discharge is high. In addition, the insurance powder and caustic soda used in reduction cleaning will increase the cost of wastewater treatment. The insurance powder will also release sulfur dioxide gas during reduction cleaning, polluting the production environment and damaging the health of workers. At the same time, it will cause wind marks of vinyl sulfone type reactive dyes, and will also cause yellowing of bleached or whitened cloth. In addition, large amounts of acid are required to neutralize the caustic soda used for reduction cleaning. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides a reduction-free cleaning soaping agent for polyester-cotton fabrics to solve the defects of the prior art polyester-cotton blended fabric dyeing, such as complicated process and high energy consumption caused by the two-bath method; at the same time, it can efficiently remove floating color, is basically foam-free, and has strong tolerance to salt and alkali.

[0005] The present invention adopts the following technical scheme, a soap detergent for polyester-cotton fabric free of reduction cleaning, which is composed of the following components:

[0006]

[0007] Preferably, it is composed of the following components:

[0008] Another preferred embodiment is composed of the following components:

[0009] Another preferred embodiment is composed of the following components:

[0010] Another preferred embodiment is composed of the following components:

[0011] Another preferred embodiment is composed of the following components:

[0012] Another preferred embodiment is composed of the following components:

[0013]

[0014]

[0015] Preferably, the castor oil polyoxyethylene ether is 36EO castor oil polyoxyethylene ether.

[0016] Specifically, the castor oil polyoxyethylene ether is EL-36. The present invention adopts 36EO castor oil polyoxyethylene ether, which has a certain affinity for dyes, has excellent dispersing, emulsifying and cleaning properties, and is helpful for removing floating colors of disperse dyes and reactive dyes.

[0017] Preferably, the sodium acrylate-vinyl acetate random copolymer is a sodium acrylate-vinyl acetate random copolymer with a comb-shaped structure.

[0018] Specifically, the sodium acrylate-vinyl acetate random copolymer is ARKOFIL MSV 200LIQ. The sodium acrylate-vinyl acetate random copolymer with a unique comb-shaped structure is used in the present invention, which has good solubilization, emulsification and dispersion capabilities for disperse dyes, can also reduce the hardness of water, can effectively promote the elution of unfixed active dyes, and has a certain anti-fouling effect.

[0019] The invention adopts polyvinyl pyrrolidone, which has a strong affinity for organic dyes, especially for active and disperse dyes, thereby preventing the washed dyes from staining the cloth again and having a good anti-fouling effect.

[0020] From the above description, it can be seen that compared with the prior art, the beneficial effects of the present invention are as follows: the present invention adopts sodium acrylate-vinyl acetate random copolymer, castor oil polyoxyethylene ether and polyvinyl pyrrolidone as raw materials to prepare a polyester-cotton fabric reduction-free cleaning soaping agent for soaping after polyester-cotton one-bath two-step dyeing, thereby eliminating the reduction cleaning and neutralization steps after dyeing and washing in the conventional process, shortening the process time, saving energy, and having little effect on the color of the fabric. DETAILED DESCRIPTION

[0021] The features of the present invention are further described below by implementing examples, but the claims of the present invention are not limited in any way.

[0022] Embodiment 1:

[0023] A soap detergent for polyester-cotton fabrics free of reduction cleaning, comprising the following components in percentage by weight:

[0024]

[0025] The castor oil polyoxyethylene ether is 36EO castor oil polyoxyethylene ether.

[0026] Embodiment 2:

[0027] The difference between this embodiment and embodiment 1 is that it includes the following components in weight percentage:

[0028]

[0029] Embodiment 3:

[0030] The difference between this embodiment and embodiment 1 is that it includes the following components in weight percentage:

[0031]

[0032] Embodiment 4:

[0033] The difference between this embodiment and embodiment 1 is that it includes the following components in weight percentage:

[0034]

[0035] Embodiment 5:

[0036] The difference between this embodiment and embodiment 1 is that it includes the following components in weight percentage:

[0037]

[0038] The non-reducing cleaning agents prepared in Examples 1-5 were tested using a one-bath two-step method: dyeing and washing - dyeing cotton - non-reducing cleaning soaping agent; wherein, the non-reducing cleaning soaping process: 2g / L non-reducing cleaning soaping agent, 90°C treatment for 15min.

[0039] Comparative Example 1:

[0040] The two-bath two-step method is adopted: dyeing and washing - reduction cleaning - cotton dyeing - soaping with conventional active dye soaping agent; among which, the reduction cleaning process: 2g / L hydrosulfite + 2g / LNaOH, 80℃ treatment for 20min; conventional active soaping process: 2g / L active soaping agent, 95℃ treatment for 20min. The test results are as follows in Table 1:

[0041] Table 1 Comparison of soap washing effects

[0042] Dry Friction Wet friction Acetate cotton nylon Polyester wool Comparative Example 1 4-5 3 4-5 4-5 3-4 4-5 4-5 Example 1 4-5 3 4-5 4-5 3-4 4-5 4-5 Example 2 4-5 3 4-5 4-5 3-4 4-5 4-5 Example 3 4-5 3 4-5 4-5 3-4 4-5 4-5 Example 4 4-5 3 4-5 4-5 3-4 4-5 4-5 Example 5 4-5 3 4-5 4-5 3-4 4-5 4-5

[0043] Table 2 shows the foam height of conventional active soap detergents compared with Examples 1-5 of the present invention, and the stability results in electrolyte.

[0044] Table 2 Foam and stability of different soaping agents in electrolytes

[0045]

[0046] As can be seen from the table, the reduction-free washing soaping agent for polyester-cotton fabric prepared by the present invention is used for soaping of polyester-cotton fabric after one-bath two-step dyeing, which eliminates the reduction washing and neutralization steps after dyeing and washing in the conventional process, shortens the process time, saves energy, is basically foam-free, and has strong tolerance to salt and alkali.

[0047] It is understood that the above specific description of the present invention is only used to illustrate the present invention and is not limited to the technical solutions described in the embodiments of the present invention. Those skilled in the art should understand that the present invention can still be modified or replaced by equivalents to achieve the same technical effects; as long as the use requirements are met, they are within the protection scope of the present invention.

Claims

1. A soaping agent for polyester-cotton fabrics free of reduction cleaning, characterized in that: It is composed of the following components:

2. The soaping agent for polyester-cotton fabrics free of reduction cleaning according to claim 1, characterized in that: It is composed of the following components:

3. The soaping agent for polyester-cotton fabrics free of reduction cleaning according to claim 1, characterized in that: It is composed of the following components:

4. The reduction-free cleaning soaping agent for polyester-cotton fabric according to claim 1, characterized in that: It is composed of the following components:

5. The soaping agent for polyester-cotton fabrics free of reduction cleaning according to claim 1, characterized in that: It is composed of the following components:

6. The soaping agent for polyester-cotton fabrics free of reduction cleaning according to claim 1, characterized in that: It is composed of the following components:

7. The soaping agent for polyester-cotton fabrics free of reduction cleaning according to claim 1, characterized in that: It is composed of the following components:

8. The soaping agent for polyester-cotton fabrics free of reduction cleaning according to any one of claims 1 to 7, characterized in that: The castor oil polyoxyethylene ether is 36EO castor oil polyoxyethylene ether.

9. The soaping agent for polyester-cotton fabrics free of reduction cleaning according to any one of claims 1 to 7, characterized in that: The sodium acrylate-vinyl acetate random copolymer is a sodium acrylate-vinyl acetate random copolymer with a comb-shaped structure.

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