Bio-based textile after-finishing agent and preparation method thereof

Abstract

The invention relates to a bio-based textile after-finishing agent and a preparation method thereof. The finishing agent is prepared from epoxy-terminated silicone oil, epoxy vegetable oil, polyether ammonia, water and an emulsifier. The preparation method comprises the following three steps: preparing an intermediate A, preparing an intermediate B and preparing a finished product. The finishing agent does not contain low ring bodies, has the biodegradation rate of more than 90%, has excellent permeability, acid and alkali resistance, high temperature resistance and self-emulsifying performance, can improve the softness and smoothness of fabrics, and is a green and environment-friendly textile after-finishing agent.

Description

Technical Field

[0001] The present invention relates to the technical field of finishing agents, in particular to a bio-based textile finishing agent and a preparation method thereof. Background Art

[0002] Domestic production of textile finishing agents is enormous, exceeding 1.5 million tons annually. However, most existing finishing agents are made from recalcitrant siloxane polymers, resulting in a certain amount of low-ring compounds within the system. Due to the bioaccumulation, reproductive toxicity, and aquatic hazards of these compounds, most domestic products are unable to enter the European and North American markets. Our company aims to utilize renewable plant oil resources to chemically modify and produce epoxy plant oil-based textile finishing agents. This bio-based material partially or completely replaces siloxane polymers, improving the performance and environmental friendliness of textiles while reducing or completely eliminating the low-ring compounds in the system, thereby opening up new markets in the EU and North America.

[0003] With the development of society and the economy, people are increasingly interested in the development and utilization of green, renewable resources. The "greening" of polymer materials has become a development trend in the field of polymer materials. Epoxidized vegetable oils, derived from natural plants, have been a research hotspot in the field of new materials. With their excellent heat resistance, light resistance, biocompatibility, and biodegradability, epoxidized vegetable oils have enormous application potential in biopharmaceuticals, textile auxiliaries, food packaging, tissue engineering, cosmetics, and other fields.

[0004] Therefore, in response to the trend of green and sustainable development, and to meet market demand for properties that resist yellowing, are green and non-toxic, are healthy and environmentally friendly, reduce reliance on chemical resources, and offer a smoother feel, our company has developed an epoxy vegetable oil-based fabric smoothing finish. This additive features a simple production process, a stable structure, contains no low-ring compounds, and is biodegradable. Compared to commercially available amino silicone oils, this finish imparts a greater smoothness and softness to the finished fabric, achieving a better hand feel rating and being more environmentally friendly.

[0005] Technical issues: Summary of the Invention

[0006] The present invention aims to solve the problems of textile finishing agents in the prior art and provides a bio-based textile finishing agent and a preparation method.

[0007] The invention also discloses a bio-based textile finishing agent and a preparation method thereof. The preparation method has simple process steps, strong operability, low equipment requirements, low investment, and is suitable for large-scale industrial production.

[0008] In order to achieve the above object, the present invention adopts the following technical solutions: A bio-based textile finishing agent, characterized in that the finishing agent is made of the following raw materials by weight: End-epoxy silicone oil 5-20kg, epoxy vegetable oil 300-600kg, polyether amine 50-350kg; water 300-500kg; acetic acid 1-15kg; emulsifier 1-15kg.

[0009] Preferably, the finishing agent contains D4, D5, and D6 ring bodies, and the content of the D4, D5, and D6 ring bodies is less than 0.1%.

[0010] "D4, D5, D6 ring bodies" refer to three cyclic siloxane compounds, specifically named as follows: D4 (octamethylcyclotetrasiloxane): a ring structure composed of four siloxane groups, with a chemical formula of C8H 18 O4Si4; D5 (decamethylcyclopentasiloxane): a ring structure composed of 5 siloxane groups, with the chemical formula C 10 H 22 O5Si5; D6 (dodecamethylcyclohexasiloxane): a ring structure composed of 6 siloxane groups, with the chemical formula C 12 H 26 O6Si6.

[0011] Preferably, the biodegradability of the finishing agent is greater than 90%.

[0012] Preferably, the finishing agent has excellent permeability, acid and alkali resistance, high temperature resistance and self-emulsification properties.

[0013] A bio-based textile finishing agent is characterized in that the finishing agent is made of the following raw materials by weight: 300-600 kg of epoxy vegetable oil, 50-350 kg of polyether amine; 300-500 kg of water; 1-15 kg of acetic acid; and 1-15 kg of emulsifier.

[0014] A method for preparing a bio-based textile finishing agent is prepared by the following method: Step (1) Preparation of Intermediate A: Add 5-20 kg of epoxy-terminated silicone oil, 200-300 kg of epoxy vegetable oil and 100-120 kg of polyetheramine into a mixer, mix and stir, heat to 70-80 ° C, add 50-350 kg of polyetheramine, and react for 4-8 hours to obtain intermediate A; Step (2) Preparation of Intermediate B: Add 400-500 kg of the obtained intermediate A and 100-300 kg of epoxidized vegetable oil into a 1000 L reactor, start stirring, heat to 40-60°C, and react for 2-4 hours to obtain intermediate B; Step (3) Preparation of finished product: Take 300-500 kg of intermediate B, add 300-500 kg of water, then add 1-15 kg of acetic acid and 1-15 kg of emulsifier, put it into an emulsifier for emulsification, and finally obtain the final product, namely the epoxy vegetable oil-based fabric smoothing finishing agent.

[0015] Preferably, step (1), step (2) and step (3) are mixed under a vacuum environment.

[0016] Preferably, the mass ratio of the acetic acid to the intermediate B is 1:100 to 3:100.

[0017] Preferably, the mass ratio of the emulsifier to the intermediate B is 1:100 to 3:100.

[0018] Therefore, the present invention has the following beneficial effects: This production process is simple and basically does not involve relatively dangerous production conditions such as high temperature and high pressure. It has very low requirements for equipment and is suitable for most Class A chemical workshops. The siloxane polymer in this product system is partially or completely replaced, and the low-cyclic content in the system is less than 0.1%. As it is a bio-based material, the biodegradability of this additive is greater than 90%; The additive system incorporates epoxy vegetable oil, which softens and plasticizes fibers. The system also has a moderate ammonia value, a stable structure, and is less susceptible to yellowing. The system contains ester groups, epoxy groups, siloxy bonds, and long-chain alkanes. Compared to commercially available amino silicone oils, this finishing agent imparts greater smoothness and softness to the finished fabric, resulting in a higher hand feel rating. This product is bio-based and contains a high proportion of renewable materials, embodying the "green" nature of polymer materials. This aligns with the contemporary concept of sustainable development and helps reduce dependence on petroleum resources. Furthermore, this product is the first to incorporate epoxidized vegetable oil into a fabric smoothing finish, significantly contributing to the "green" nature of textile auxiliaries. DETAILED DESCRIPTION

[0019] The present invention will be further described below through specific embodiments.

[0020] In the present invention, unless otherwise specified, all percentages are by weight, all equipment and raw materials can be purchased from the market or are commonly used in the industry, and the methods in the following embodiments, unless otherwise specified, are conventional methods in the art.

[0021] Example 1 The finishing agent is made from the following raw materials by weight: Preferably, the finishing agent has excellent permeability, acid and alkali resistance, high temperature resistance and self-emulsification properties.

[0022] A method for preparing a bio-based textile finishing agent, characterized in that it is prepared by the following method: Step (1) Preparation of Intermediate A: 5 kg of epoxy-terminated silicone oil, 200 kg of epoxy vegetable oil and 100 kg of polyetheramine were added to a mixer, mixed and stirred, and the temperature was raised to 70°C. 50 kg of polyetheramine was added and the mixture was reacted for 4 hours to obtain intermediate A. Step (2) Preparation of Intermediate B: Add 400 kg of the obtained intermediate A and 100 kg of epoxidized vegetable oil into a 1000 L reactor, start stirring, heat to 40°C, and react for 2 h to obtain intermediate B; Step (3) Preparation of finished product: Take 300 kg of intermediate B, add 300 kg of water, then add 3 kg of acetic acid and 3 kg of emulsifier, put it into an emulsifier for emulsification, and finally obtain the final product, namely the epoxy vegetable oil-based fabric smoothing finishing agent.

[0023] Example 2 A method for preparing a bio-based textile finishing agent, characterized in that it is prepared by the following method: Step (1) Preparation of Intermediate A: 10 kg of epoxy-terminated silicone oil, 250 kg of epoxy vegetable oil and 110 kg of polyetheramine were added to a mixer, mixed and stirred, and heated to 75°C. 200 kg of polyetheramine was added and reacted for 6 hours to obtain intermediate A. Step (2) Preparation of Intermediate B: Add 450 kg of the obtained intermediate A and 200 kg of epoxidized vegetable oil into a 1000 L reactor, start stirring, heat to 50°C, and react for 3 hours to obtain intermediate B; Step (3) Preparation of finished product: Take 400 kg of intermediate B, add 400 kg of water, then add 6 kg of acetic acid and 6 kg of emulsifier, put it into an emulsifier for emulsification, and finally obtain the final product, namely the epoxy vegetable oil-based fabric smoothing finishing agent.

[0024] Example 3 A method for preparing a bio-based textile finishing agent, characterized in that it is prepared by the following method: Step (1) Preparation of Intermediate A: 20 kg of epoxy-terminated silicone oil, 300 kg of epoxy vegetable oil and 120 kg of polyetheramine were added to a mixer, mixed and stirred, and heated to 80°C. 350 kg of polyetheramine was added and reacted for 8 hours to obtain intermediate A. Step (2) Preparation of Intermediate B: Add 500 kg of the obtained intermediate A and 300 kg of epoxidized vegetable oil into a 1000 L reactor, start stirring, heat to 60°C, and react for 4 hours to obtain intermediate B; Step (3) Preparation of finished product: Take 500 kg of intermediate B, add 500 kg of water, then add 15 kg of acetic acid and 15 kg of emulsifier, put it into an emulsifier for emulsification, and finally obtain the final product, namely the epoxy vegetable oil-based fabric smoothing finishing agent.

[0025] The emulsifier can be a linear alcohol polyoxyethylene ether or an isomeric alcohol polyoxyethylene ether.

[0026] For example, linear AEO3 / AEO7 / AEO9; Isomeric alcohols: such as TO3 / TO5 / TO7 / TO9; Emulsifiers can be compounded with AEO3 / 7 / 9 in a certain proportion; TO3 / 7 / 9 can also be compounded.

[0027] Test data The finishing agent test report is verified to be in compliance with the ZDHC 3.0 green environmental protection requirements, and the compliance with the third edition (version 3.0) of the chemical management standard developed by the Zero Discharge of Hazardous Chemicals (ZDHC) Alliance is reviewed and confirmed.

Claims

1. A bio-based textile finishing agent, characterized in that: The finishing agent is made from the following raw materials by weight: End-epoxy silicone oil 5-20kg, epoxy vegetable oil 300-600kg, polyether amine 50-350kg; water 300-500kg; acetic acid 1-15kg; emulsifier 1-15kg.

2. A method for preparing a bio-based textile finishing agent, characterized in that: Prepared by the following method: Step (1) Prepare intermediate A: Add 5-20 kg of epoxy-terminated silicone oil, 200-300 kg of epoxy vegetable oil and 100-120 kg of polyetheramine into a mixer, mix and stir, heat to 70-80 ° C, add 50-350 kg of polyetheramine, and react for 4-8 hours to obtain intermediate A; Step (2) Preparation of Intermediate B: Add 400-500 kg of the obtained intermediate A and 100-300 kg of epoxidized vegetable oil to a 1000 L reactor, start stirring, heat to 40-60 ° C, and react for 2-4 hours to obtain intermediate B; Step (3) Prepare the finished product: Take 300-500 kg of intermediate B, add 300-500 kg of water, then add 1-15 kg of acetic acid and 1-15 kg of emulsifier, put it into an emulsifier for emulsification, and finally obtain the final product, namely the epoxy vegetable oil-based fabric smoothing finishing agent.

3. The method for preparing a bio-based textile finishing agent according to claim 2, characterized in that: When step (1), step (2) and step (3) are mixed, they are carried out under a vacuum environment.

4. The method for preparing a bio-based textile finishing agent according to claim 2, characterized in that: The mass ratio of the acetic acid to the intermediate B is 1:100 to 3:

100.

5. The method for preparing a bio-based textile finishing agent according to claim 2, characterized in that: The mass ratio of the emulsifier to the intermediate B is 1:100 to 3:100.

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