CN115976841A - Softening agent for microfiber leather base cloth and preparation method thereof - Google Patents

Abstract

The invention discloses a softener for superfiber leather base cloth and a preparation method thereof, belonging to the field of textile softeners. The softener for the microfiber leather base cloth is composed of the following components by mass percentage: 15% to 27% of amphoteric ionic amino silicone oil, 5% to 20% of epoxy modified silicone oil, and 1% to 15% of fatty amide derivatives , 4% to 25% of non-ionic emulsifier, 0.1 to 0.5% of organic acid, and the balance is deionized water. The various components of the softener for microfiber leather base cloth of the present invention cooperate with each other, and the quality stability is good. Water and color.

Description

Softener for microfiber leather base cloth and preparation method thereof

technical field

The invention belongs to the technical field of textile softeners, in particular to a softener for superfiber leather base cloth.

Background technique

Natural leather is a natural polymer composite material made of animal raw hide through a series of physical and chemical processing with high strength, good elasticity, high moisture and heat resistance stability and excellent hygienic performance. Compared with natural leather, synthetic leather emphasizes the synthetic performance of "material". Synthetic leather aims at the organizational structure of natural leather, and impregnates the fiber layer (such as polyamide fiber, polyester fiber, etc.) with elastic polymer materials (such as polyurethane) to imitate the irregular three-dimensional structure of the natural leather mesh layer. The elastic polymer material forms a membrane with a continuous microporous structure, resulting in a composite material that resembles natural leather in structure and performance.

Because the microfiber leather base fabric is made of microfiber, it has good elasticity, high strength, soft hand feeling and good air permeability. Many physical properties of high-grade synthetic leather have exceeded those of natural leather, and the external surface has the characteristics of natural leather. In an industrial sense, it is not only suitable for modern large-scale production, but also can protect ecology, reduce environmental pollution, make full use of non-natural resources, and have original skin characteristics on the surface. At present, the softener for microfiber leather base fabrics is generally a high-grade fatty amide derivative emulsion, but it only has a single function of improving soft hand feeling, and quality stability, hydrophilicity and hand feel need to be improved.

In order to solve the above-mentioned technical problems, many beneficial explorations have been carried out in the prior art. For example, the Chinese patent with the notification number CN102952273B discloses a zwitterionic amino silicone oil. The emulsion of the zwitterionic amino silicone oil has high stability, and is It has high reactivity when treating fabrics, and the treated fabrics have good yellowing resistance, washability and fluffy feeling. However, the hydrophilicity and feel of fabrics treated with the zwitterionic aminosilicone oil have yet to be improved, and there is no disclosure in the prior art of using the zwitterionic aminosilicone oil to prepare a softener suitable for microfiber leather base cloth.

Contents of the invention

The present invention aims at the above problems, and provides a softener for microfiber leather base cloth according to the characteristics of the microfiber leather base cloth and the use status of amphoteric ionic amino silicone oil. The softener has good quality stability and can not only impart The soft, plump and smooth feel of the leather base fabric does not affect the hydrophilicity and color of the microfiber leather base fabric.

In order to achieve the above object, the technical scheme adopted in the present invention is as follows:

The first aspect of the present invention provides a softener for microfiber leather base cloth, which is composed of the following components by mass percentage: 15% to 27% of amphoteric amino silicone oil, and 5% to 20% of epoxy modified silicone oil 1% to 15% of fatty amide derivatives, 4% to 25% of nonionic emulsifiers, 0.1 to 0.5% of organic acids, and the balance is deionized water.

The preferred mass percentages of each component are as follows: 15-27% of zwitterionic amino silicone oil, 10%-20% of epoxy-modified silicone oil, 5%-15% of fatty amide derivatives, and 8-15% of non-ionic emulsifier , Organic acid 0.1-0.3%, the balance is deionized water.

Further preferably, the general structural formula of the zwitterionic amino silicone oil is as follows:

Among them, R ¹ is C ₁ ~ C ₁₂ alkyl, alkoxy or hydroxyl; R ² is C ₁ ~ C ₄ methyl or hydroxyl; R ³ is a monoamine group; R ⁴ is an anion modified monoamine Class group; x, y, z are all positive integers and 5≤x+y+z≤1000.

In a preferred embodiment provided by the present invention, R ¹ is C ₁ -C ₅ alkyl, alkoxy or hydroxyl; R ² is hydroxyl;

Further preferably, the epoxy value of the epoxy-modified silicone oil is 0.2mg/mol, the viscosity is 5000mPa.s, and the general structural formula is as follows:

X为C₁～C₅的烷基、烷氧基或羟基；m，n均为正整数，10≤m+n≤1000。Among them, R is

X is C ₁ -C ₅ alkyl, alkoxy or hydroxyl; m and n are both positive integers, 10≤m+n≤1000.

Further preferably, the nonionic emulsifier is a secondary alcohol polyoxyethylene ether, and the secondary alcohol polyoxyethylene ether is any of 15-S-5, 15-S-9, 15-S-12 and 15-S-7 One or more mixed.

In the preferred embodiment provided by the present invention, the secondary alcohol polyoxyethylene ether is selected from any of the following mixed forms: 15-S-5:15-S-9 is 2:8, 15-S-5:15-S -12 is 1:9, 15-S-7:15-S-12 is 1:1.

Further preferably, the fatty amide derivative is a methylol fatty amide; and the organic acid is selected from one or more of acetic acid, citric acid, glycolic acid and terephthalic acid.

The second aspect of the present invention provides the preparation method of the softening agent for the above-mentioned microfiber leather base cloth, which is carried out according to the following steps: according to the ratio of raw materials, first add zwitterionic amino silicone oil, epoxy modified Stir the non-ionic silicone oil and non-ionic emulsifier evenly, then heat the mixing container, keep the emulsification temperature at 30°C-60°C, then add fatty amide derivatives and stir, and finally add organic acid and deionized water slowly according to the proportion, emulsification reaction; Stir Divide evenly.

The beneficial technical effects of the present invention are:

The zwitterionic amino silicone oil in the softener for microfiber leather base cloth of the present invention not only retains part of the unmodified amino silicone oil, but also adds anionic hydrophilic groups, quaternary ammonium cationic groups and hydroxyl groups. The microfiber leather base fabric treated with the softener not only has the soft and elastic feel of the microfiber leather base fabric after being treated with amino silicone oil, but also reduces the yellowing of the fabric; the hydroxyl group in the silicone oil structure can interact with the fabric The hydroxyl and carboxyl groups in the silicone oil are dehydrated and condensed to improve their reactivity and washability; the presence of quaternary ammonium cations in the silicone oil structure can improve the fullness of the microfiber leather base fabric after finishing.

The epoxy-modified silicone oil in the softener is combined with the zwitterionic amino silicone oil. The combination of the two components can make the finished microfiber leather base cloth have soft, elastic and fluffy hand feeling. In addition, the fatty amide derivatives in the softener are not only less irritating, but also compounded with zwitterionic amino silicone oil, which can make the finished microfiber leather base fabric have an excellent soft and fluffy feel. The nonionic emulsifier in the softener can effectively improve the emulsification effect when preparing the softener, and improve the stability of the softener, and the organic acid can further improve the quality stability of the softener as a pH regulator.

The above-mentioned components cooperate with each other, so that the softener for the microfiber leather base cloth of the present invention has good quality stability, not only endows the microfiber leather base cloth with a soft, plump, and elastic feel, but also does not affect the affinity of the microfiber leather base cloth. Water and color.

Detailed ways

The present invention will be described in detail below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention, and are not intended to limit the scope of application of the present invention.

1. Source of components

Zwitterionic amino silicone oil was purchased from Shanghai Fluoro Chemical Products Co., Ltd., model SF6150; epoxy silicone oil was purchased from Shanghai Fluoro Poly Chemical Products Co., Ltd., model SF9208; fatty amide derivatives were methylol fatty acid amide, purchased from Dongguan Baolimei Chemical Co., Ltd.; the nonionic emulsifier is secondary alcohol polyoxyethylene ether, purchased from Dow Chemical; the variable speed mixer is purchased from IKA, model RW20digitil.

Among them, (1) zwitterionic amino silicone oil SF6150 can be represented by the following structural formula:

Wherein, R ¹ =CH ₃ ; R ² =hydroxyl;

where x=10, y=5, z=200.

(2) Modified amino silicone oil SF9208 can be represented by the following structural formula:

X为甲基；m＝200，n＝8。in,

X is methyl; m=200, n=8.

2. Specific preparation

Example 1

The softening agent for microfiber leather base cloth of the present embodiment has the following components and mass percentages: 18% for amphoteric ionic amino silicone oil SF6150, 10% for epoxy modified silicone oil SF9208, 10% for methylol fatty acid amide, 15% -S-5:15-S-9=2:8 secondary alcohol polyoxyethylene ether is 12%, organic acid is 0.3% and deionized water is 49.7%.

Preparation steps: Add zwitterionic amino silicone oil SF 6150, modified amino silicone oil SF9208 and nonionic emulsifier 15-S-5:15-S-9=2:8 secondary alcohol polyoxygen in the variable speed mixer Stir the vinyl ether evenly, then heat the mixing container to keep the emulsification temperature at 50°C; then add methylol fatty acid amide according to the proportion and stir, and finally slowly add acetic acid and deionized water according to the proportion to emulsify. Stir to evenly distribute.

Example 2

The softening agent for microfiber leather base cloth of the present embodiment has the following components and mass percentages: 25% for amphoteric ionic amino silicone oil SF6150, 20% for epoxy modified silicone oil SF9208, 15% for methylol fatty acid amide, 15% -S-7:15-S-12 is 1:1 secondary alcohol polyoxyethylene ether with 23%, organic acid with 0.5% and deionized water with 16.5%.

Preparation steps: Add zwitterionic amino silicone oil SF 6150, modified amino silicone oil SF9208 and nonionic emulsifier 15-S-7: 15-S-12 in a ratio of 1:1 secondary alcohol polyoxygen to the variable speed mixer Stir the vinyl ether evenly, then heat the mixing container to keep the emulsification temperature at 60°C; then add methylol fatty acid amide according to the proportion and stir, and finally slowly add acetic acid and deionized water according to the proportion to emulsify. Stir to evenly distribute.

Example 3

The softening agent for the microfiber leather base cloth of the present embodiment has the following components and mass percentages: 15% for amphoteric ionic amino silicone oil SF6150, 8% for epoxy modified silicone oil SF9208, 5% for methylol fatty acid amide, 15% -S-5:15-S-12=1:9 secondary alcohol polyoxyethylene ether 10%, organic acid 0.2% and deionized water 61.8%.

Preparation steps: Add zwitterionic amino silicone oil SF 6150, modified amino silicone oil SF9208 and nonionic emulsifier 15-S-5:15-S-12=1:9 secondary alcohol polyoxygen in the variable speed mixer Stir the vinyl ether evenly, then heat the mixing container to keep the emulsification temperature at 40°C; then add methylol fatty acid amide according to the proportion and stir, and finally slowly add acetic acid and deionized water according to the proportion to emulsify. Stir to evenly distribute.

The softener prepared according to the above examples has good quality stability and can be stored for at least 12 months at room temperature without delamination or agglomeration.

The softener prepared in the above examples is used to treat the microfiber leather base cloth in a conventional manner, and the results show that it can not only give the microfiber leather base cloth a soft, plump, and smooth feel, but also does not affect the hydrophilicity of the microfiber leather base cloth. sex and color.

In the above-mentioned preparation examples, specific reagents were used for experiments. Reasonable extension of the ^above -mentioned reagents and reagents with similar functions to the above-mentioned reagents _can also achieve corresponding functions. The corresponding function can be realized; R ² = hydroxyl group, and the corresponding function can also be realized by substituting it with an oligo-chain alkyl group.

The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the industry should understand that the present invention is not limited by the above-mentioned embodiments, and that described in the above-mentioned embodiments and the description only illustrates the principles of the present invention, and the present invention also has various aspects without departing from the spirit and scope of the present invention. Variations and improvements all fall within the scope of the claimed invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. A softener for microfiber leather base cloth, which is composed of the following components by mass percentage: 15% to 27% of amphoteric amino silicone oil, 5% to 20% of epoxy modified silicone oil, and 1% of fatty amide derivatives ～15%, non-ionic emulsifier 4%～25%, organic acid 0.1～0.5%, and the balance is deionized water. 2. The softening agent for microfiber leather base cloth according to claim 1, characterized in that, the mass percent of each component is as follows: 15% to 27% of amphoteric ionic amino silicone oil, 10% to 20% of epoxy modified silicone oil %, 5% to 15% of fatty amide derivatives, 8 to 15% of nonionic emulsifiers, 0.1 to 0.3% of organic acids, and the balance is deionized water. 3. according to claim 1 and 2 described softening agents for microfiber leather base cloth, it is characterized in that, the general structural formula of described zwitterionic amino silicone oil is as follows:

Among them, R ¹ is C ₁ ~ C ₁₂ alkyl, alkoxy or hydroxyl; R ² is C ₁ ~ C ₄ methyl or hydroxyl; R ³ is a monoamine group; R ⁴ is an anion modified monoamine Class group; x, y, z are all positive integers and 5≤x+y+z≤1000. 4. the softening agent for microfiber leather base cloth according to claim 3, is characterized in that: Wherein, R ¹ is C ₁ -C ₅ alkyl, alkoxy or hydroxyl;

5. softening agent for microfiber leather base cloth according to claim 1, is characterized in that, the epoxy value of described epoxy-modified silicone oil is 0.2mg/mol, and viscosity is 5000mPa.s, general structural formula is as follows:

Among them, R is

X is C ₁ -C ₅ alkyl, alkoxy or hydroxyl; m and n are both positive integers, 10≤m+n≤1000. 6. The softening agent for microfiber leather base cloth according to claim 1, wherein said nonionic emulsifier is secondary alcohol polyoxyethylene ether, and said secondary alcohol polyoxyethylene ether is 15-S-5 , 15-S-9, 15-S-12 and 15-S-7 any one or more mixed. 7. softening agent for microfiber leather base cloth according to claim 1, is characterized in that, described secondary alcohol polyoxyethylene ether is selected from following any mixed form: 15-S-5:15-S-9 2:8 for 15-S-5: 1:9 for 15-S-12, 1:1 for 15-S-7: 15-S-12. 8. The softening agent for microfiber leather base cloth according to claim 1, characterized in that, the fatty amide derivative is a methylol fatty amide. 9. The softening agent for microfiber leather base cloth according to claim 1, characterized in that, the organic acid is selected from one or more of acetic acid, citric acid, glycolic acid and terephthalic acid. 10. the preparation method of claim 1 or 2 described microfiber leather base cloth softening agent is characterized in that, carries out according to the following steps: According to the ratio of raw materials, first add zwitterionic amino silicone oil, epoxy modified silicone oil and nonionic emulsifier into the variable speed mixer and stir evenly, then heat the mixing container, keep the emulsification temperature at 30 ° C ~ 60 ° C, and then add Stir the fatty amide derivatives, and finally slowly add organic acid and deionized water according to the ratio for emulsification reaction; stir well and pack.