Low-foam wetting agent for printing and dyeing pretreatment as well as preparation method and application of low-foam wetting agent

Abstract

The invention provides a low-foam wetting agent for printing and dyeing pretreatment as well as a preparation method and application thereof. The low-foam wetting agent for printing and dyeing pretreatment comprises the following components in parts by weight: 25-30 parts of isomeric alcohol ether sodium sulfate, 3-10 parts of isomeric alcohol ether potassium phosphate, 3-6 parts of isomeric alcohol polyether, 1-3 parts of urea and 45-66 parts of water. The low-foam wetting agent disclosed by the invention has low-foam and defoaming properties, so that the system has less foam and is convenient to produce and use; according to the present invention, the oil removing agent can avoid the adverse effect of water quality on the oil removing effect, can disperse the oil stain, can reduce the surface tension of the water system, and can rapidly expand on the fiber surface, rapidly permeate into the fiber, penetrate into the fiber gap and expel the air during the printing and dyeing pretreatment so as to achieve the excellent wetting effect.

Description

Technical Field

[0001] The invention belongs to the technical field of printing and dyeing, and relates to a wetting agent, in particular to a low-foaming wetting agent for pre-treatment of printing and dyeing, and a preparation method and application thereof. Background Art

[0002] Printing and dyeing, also known as dyeing and finishing, is a processing method for coloring fabric products according to demand, including three steps: pre-treatment, dyeing and finishing.

[0003] The scouring and bleaching process before printing and dyeing includes desizing, refining and bleaching, which are completed in three independent processes. The defects of its operation are very obvious. Not only are the processes complicated and energy-intensive, but the damage to the fibers is also obvious.

[0004] Since fabrics are composed of numerous porous fibers, most of which contain hydrophobic grease on their surfaces, have high surface / interfacial tension, and water is difficult to enter, so a pre-treatment process is required to wet the fabric. Wetting agents can effectively reduce the surface tension of aqueous solutions, quickly spread on the fiber surface, penetrate into the fiber gaps, and drive out the air, thereby achieving a better wetting effect.

[0005] Due to the high surface tension of water (72mN / m), conventional dispersants are difficult to wet most substrates. In practical applications, people often add wetting agents or wetting dispersants with wetting effects to promote the wetting of the system to the substrate. However, the common wetting agents on the market include small molecule wetting agents, modified polyether wetting agents and silicone wetting agents, which have a certain wetting effect on the substrate. Due to the extremely low surface tension of silicone wetting agents, some optimized structures can achieve super spreading effects; however, due to the addition of wetting agents, disturbances and dispersions during use cause more foam, and additional defoaming agents need to be added to eliminate the foam, which increases the operation steps and production costs.

[0006] Therefore, the wetting agents currently sold on the market have certain problems in the application process of pre-printing and dyeing treatment, such as insufficient wetting effect, excessive foam, and biological toxicity of some products. These problems limit the application and development of wetting agents in the field of printing and dyeing. Summary of the invention

[0007] In order to solve certain problems existing in the application process of commercially available wetting agents in pre-printing and dyeing treatment, such as insufficient wetting effect, excessive foam, biological toxicity of some products, etc., the present invention provides a low-foaming wetting agent for pre-printing and dyeing treatment and a preparation method and application thereof. The product of the present invention has the advantages of good wetting effect, less foam and environmental friendliness.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions:

[0009] The invention provides a low-foam wetting agent for pre-treatment of printing and dyeing. The low-foam wetting agent for pre-treatment of printing and dyeing comprises, by weight, 25-30 parts of isomeric alcohol ether sodium sulfate, 3-10 parts of isomeric alcohol ether potassium phosphate, 3-6 parts of isomeric alcohol polyether, 1-3 parts of urea and 45-66 parts of water.

[0010] As a preferred embodiment of the present invention, the structural formula of the isomeric alcohol ether sodium sulfate is:

[0011] C 13 H 27 O(CH2(CH3)CHO) m (CH2CH2O) n SO3Na, wherein m is 0-2 and n is 2-4.

[0012] As a preferred embodiment of the present invention, the structural formula of the isomeric alcohol ether potassium phosphate is: 13 H 27 O(CH2CH2O)6PO3K.

[0013] As a preferred embodiment of the present invention, the structural formula of the isomeric alcohol polyether is: 10 H 21 O(CH2CH2O)5H.

[0014] As a preferred embodiment of the present invention, in the structural formula of the isomeric alcohol ether sodium sulfate, m is 1 and n is 3.

[0015] As a preferred embodiment of the present invention, in the structural formula of the isomeric alcohol ether sodium sulfate, m is 0 and n is 3.

[0016] The present invention also provides a method for preparing the above-mentioned low-foaming wetting agent for pre-treatment of printing and dyeing, characterized in that the preparation method comprises: adding isomeric alcohol ether sodium sulfate, isomeric alcohol ether potassium phosphate, isomeric alcohol polyether and urea into water, stirring and heating to 95-105° C., stirring at a speed of 300-500 r / min for 0.5-2h, and obtaining the low-foaming wetting agent for pre-treatment of printing and dyeing.

[0017] The present invention also provides application of the low-foam wetting agent for pre-treatment of printing and dyeing in the printing and dyeing industry.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1) The low-foaming wetting agent of the present invention has the advantages of good wetting effect and less foam.

[0020] 2) The low-foaming wetting agent of the present invention has low biological toxicity and is environmentally friendly.

[0021] 3) The low-foam wetting agent of the present invention has low-foam and defoaming properties, which reduces the foam in the system and facilitates production and use; it can avoid the adverse effects of water quality on the degreasing effect, and can also disperse oil stains, and can reduce the surface tension of the water system, so that during pre-printing and dyeing treatment, it can quickly spread on the fiber surface, quickly penetrate into the fiber, penetrate into the fiber gaps, and drive out the air, thereby achieving an excellent wetting effect. DETAILED DESCRIPTION

[0022] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0023] The invention provides a low-foam wetting agent for pre-treatment of printing and dyeing. The low-foam wetting agent for pre-treatment of printing and dyeing comprises, by weight, 25-30 parts of isomeric alcohol ether sodium sulfate, 3-10 parts of isomeric alcohol ether potassium phosphate, 3-6 parts of isomeric alcohol polyether, 1-3 parts of urea and 45-66 parts of water.

[0024] Preferably, the structural formula of the isomeric alcohol ether sodium sulfate is: 13 H 27 O(CH2(CH3)CHO) m (CH2CH2O) n SO3Na, wherein m is 0-2 and n is 2-4.

[0025] Preferably, the structural formula of the isomeric alcohol ether potassium phosphate is: 13 H 27 O(CH2CH2O)6PO3K.

[0026] Preferably, the structural formula of the isomeric alcohol polyether is: 10 H 21 O(CH2CH2O)5H.

[0027] Preferably, in the structural formula of the isomeric alcohol ether sodium sulfate, m is 1 and n is 3.

[0028] Preferably, in the structural formula of the isomeric alcohol ether sodium sulfate, m is 0 and n is 3.

[0029] The isomeric alcohol ether sodium sulfate and isomeric alcohol ether potassium phosphate of specific composition are used to cooperate with each other, which can not only make the preparation stable and not prone to turbidity, stratification and precipitation during storage, but also provide appropriate surface tension for the system, thereby reducing the surface tension of the water system, and can reduce the wastewater treatment burden of the printing and dyeing factory, and has good biocompatibility, solubility and stability, and good wetting effect.

[0030] The isomeric alcohol polyether is used in the present invention, so that the low-foaming wetting agent has excellent fluidity and quick solubility, good wetting effect and less foam.

[0031] Example 1

[0032] The low-foam wetting agent for pre-treatment of printing and dyeing provided in this embodiment comprises 27 parts by weight of sodium isomeric alcohol ether sulfate (C 13 H 27 O(CH2(CH3)CHO)(CH2CH2O)3SO3Na), 7 parts of isomeric alcohol ether potassium phosphate (C 13 H 27 O(CH2CH2O)6PO3K), 5 parts of isomeric alcohol polyether (C 10 H 21 O(CH2CH2O)5H), 2 parts of urea (commercially available) and 59 parts of water.

[0033] Example 2

[0034] The low-foam wetting agent for pre-treatment of printing and dyeing provided in this embodiment comprises 27 parts by weight of sodium isomeric alcohol ether sulfate (C 13 H 27 O(CH2(CH3)CHO)(CH2CH2O)3SO3Na), 6 parts of isomeric alcohol ether potassium phosphate (C 13 H 27 O(CH2CH2O)6PO3K), 5 parts of isomeric alcohol polyether (C 10 H 21 O(CH2CH2O)5H), 2 parts of urea (commercially available) and 64 parts of water.

[0035] Example 3

[0036] The low-foam wetting agent for pre-treatment of printing and dyeing provided in this embodiment comprises 27 parts by weight of sodium isomeric alcohol ether sulfate (C 13 H 27 O(CH2CH2O)3SO3Na), 7 parts of isomeric alcohol ether potassium phosphate (C 13 H 27 O(CH2CH2O)6PO3K), 5 parts of isomeric alcohol polyether (C 10 H 21O(CH2CH2O)5H), 2 parts of urea (commercially available) and 64 parts of water.

[0037] Comparative Example 1

[0038] The low-foam wetting agent for pre-treatment of printing and dyeing provided in this comparative example comprises 27 parts by weight of sodium isomeric alcohol ether sulfate (C 13 H 27 O(CH2(CH3)CHO)(CH2CH2O)3SO3Na), 7 parts of isomeric alcohol ether potassium phosphate (C 13 H 27 O(CH2CH2O)6PO3K), 2 parts of urea (commercially available) and 64 parts of water.

[0039] Comparative Example 2

[0040] The low-foam wetting agent for pre-treatment of printing and dyeing provided in this comparative example comprises 27 parts by weight of sodium isomeric alcohol ether sulfate (C 13 H 27 O(CH2(CH3)CHO)(CH2CH2O)3SO3Na), 1-3 parts of urea (commercially available) and 64 parts of water.

[0041] Comparative Example 3

[0042] The low-foam wetting agent for pre-treatment of printing and dyeing provided in this comparative example comprises 27 parts by weight of sodium isomeric alcohol ether sulfate (C 13 H 27 O(CH2(CH3)CHO)(CH2CH2O)3SO3Na), 2 parts of isomeric alcohol ether potassium phosphate (C 13 H 27 O(CH2CH2O)6PO3K), 5 parts of isomeric alcohol polyether (C 10 H 21 O(CH2CH2O)5H), 2 parts of urea (commercially available) and 64 parts of water.

[0043] The low foaming wetting agents prepared in Examples 1-3 and the low foaming wetting agents prepared in Comparative Examples 1-3 were subjected to a wetting power a test and a foaming volume b test.

[0044] a: The test method for wetting force adopts the national standard "Immersion method for determination of wetting force of surfactants" (GB T11983-2008).

[0045] b: The test method for foaming volume adopts the national standard "Determination of Foaming Power of Surfactants - Improved Ross-Miles Method" (GB T 7462-1994).

[0046] The results are shown in Table 1.

[0047] Table 1. Test results

[0048]

[0049] Referring to Table 1, the difference between Example 2 and Comparative Example 3 is that the isomeric alcohol ether potassium phosphate (C 13 H 27 The addition amount of O(CH2CH2O)6PO3K) is compared through the wetting force, which shows that the present invention adopts the specific composition of isomeric alcohol ether sodium sulfate and isomeric alcohol ether potassium phosphate to cooperate with each other, which can not only make the preparation stable, and is not prone to turbidity, stratification and precipitation during storage, but also can provide a suitable surface tension for the system, thereby reducing the surface tension of the water system, and can reduce the wastewater treatment burden of the printing and dyeing factory, and has good biocompatibility, solubility and stability, and good wetting effect.

[0050] The above is only a preferred embodiment of the present invention, and is not any formal or substantial limitation of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the method of the present invention, and these improvements and supplements should also be regarded as the protection scope of the present invention. Any technician familiar with this profession, without departing from the spirit and scope of the present invention, can make some changes, modifications and evolutions of the technical content disclosed above, which are equivalent embodiments of the present invention; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the essential technology of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A low-foaming wetting agent for pre-treatment of printing and dyeing, characterized in that: The low-foam wetting agent for pre-printing and dyeing treatment comprises, by weight, 25-30 parts of isomeric alcohol ether sodium sulfate, 3-10 parts of isomeric alcohol ether potassium phosphate, 3-6 parts of isomeric alcohol polyether, 1-3 parts of urea and 45-66 parts of water.

2. A low-foaming wetting agent for pre-treatment of printing and dyeing according to claim 1, characterized in that: The structural formula of the isomeric alcohol ether sodium sulfate is: 13 H 27 O(CH2(CH3)CHO) m (CH2CH2O) n SO3Na, wherein m is 0-2 and n is 2-4.

3. A low-foaming wetting agent for pre-treatment of printing and dyeing according to claim 1, characterized in that: The structural formula of the isomeric alcohol ether potassium phosphate is: 13 H 27 O(CH2CH2O)6PO3K.

4. A low-foaming wetting agent for pre-printing and dyeing treatment according to claim 1, characterized in that: The structural formula of the isomeric alcohol polyether is: 10 H 21 O(CH2CH2O)5H.

5. A low-foaming wetting agent for pre-treatment of printing and dyeing according to claim 2, characterized in that: In the structural formula of the isomeric alcohol ether sodium sulfate, m is 1 and n is 3.

6. A low-foaming wetting agent for pre-treatment of printing and dyeing according to claim 2, characterized in that: In the structural formula of the isomeric alcohol ether sodium sulfate, m is 0 and n is 3.

7. A method for preparing a low-foaming wetting agent for pre-printing and dyeing according to any one of claims 1 to 6, characterized in that: The preparation method comprises: adding isomeric alcohol ether sodium sulfate, isomeric alcohol ether potassium phosphate, isomeric alcohol polyether, fatty alcohol ether and urea into water, stirring and heating to 95-105° C., stirring at a speed of 300-500 r / min for 0.5-2h, and obtaining a low-foaming wetting agent for pre-treatment of printing and dyeing.

8. Use of the low-foaming wetting agent for pre-treatment of printing and dyeing as claimed in any one of claims 1 to 6 in the printing and dyeing industry.

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