Preparation method of surfactant containing alkyl quaternary ammonium ethoxylate

Abstract

The invention provides a preparation method of a surfactant containing alkyl quaternary ammonium ethoxylate. The preparation method comprises the following steps: step 1, collecting raw materials; the raw materials comprise C11 ethoxylated alcohol, C12-C14 secondary alcohol ethoxylate, anacardol polyoxyethylene ether, alkyl quaternary ammonium ethoxylate and alkyl diphenyl ether disulfonate, and the raw materials comprise the C11 ethoxylated alcohol, the C12-C14 secondary alcohol ethoxylate, the anacardol polyoxyethylene ether, the alkyl quaternary ammonium ethoxylate and the alkyl diphenyl ether disulfonate; 2, before production, the cardanol polyoxyethylene ether is kept at the constant temperature of 20-40 DEG C for 30 min to 1 h; 3, alkyl quaternary ammonium ethoxylate, C11 ethoxylated alcohol, C12-C14 secondary alcohol ethoxylate and cardanol polyoxyethylene ether are sequentially added into deionized water, and stirring is conducted at the normal temperature; and 4, continuously stirring the mixture, and slowly adding alkyl diphenyl ether disulfonate until the system is uniform and transparent. The cleaning agent has the beneficial effects that the preparation is convenient, the working efficiency is improved, and the used raw materials are selected from environment-friendly surfactants with natural sources, so that the cleaning agent is low in odor and easy to degrade.

Description

Technical Field

[0001] The present invention relates to the field of preparation of oil-out surfactants, and particularly to a method for preparing a surfactant containing alkyl quaternary ammonium ethoxylate. Background Art

[0002] During the production process of complete vehicles and parts supporting the automobile manufacturing process, a large amount of cleaning agents are used, and the main components thereof are surfactants and a small amount of inorganic auxiliaries. Due to the long-term use of traditional surfactants such as sodium dodecyl sulfate and alkylphenol polyoxyethylene ether as the main oil-removing active ingredients by domestic cleaning agent manufacturers in the commercial vehicle market, it is difficult to enter due to limitations in aspects such as the performance, safety, and environmental protection of the raw materials themselves.

[0003] For the cleaning agent of aluminum and aluminum alloys, at present, it is mainly a pickling-based system such as hydrofluoric acid, nitric acid, sulfuric acid, or phosphoric acid. The advantages of pickling cleaning agents are simple operation and high product yield, but they will cause great harm to equipment and workers. Especially nitric acid will generate a large amount of yellow smoke and has been prohibited in many places; hydrofluoric acid or hydrofluoric acid derivatives will generate a large amount of fluorine-containing hazardous waste, and the subsequent treatment is difficult. There is an urgent need to design a method for preparing a surfactant containing alkyl quaternary ammonium ethoxylate. Summary of the Invention

[0004] To solve the above problems, the present invention discloses a method for preparing a surfactant containing alkyl quaternary ammonium ethoxylate, which is convenient to operate, simple to prepare, and can prepare a surfactant that is non-corrosive to the surfaces of aluminum and aluminum alloys, environmentally friendly, and safe more quickly.

[0005] A method for preparing a surfactant containing alkyl quaternary ammonium ethoxylate includes the following steps: Step 1: Collect raw materials; the raw materials include C11 ethoxylated alcohol, C12-C14 secondary alcohol ethoxylate, cardanol polyoxyethylene ether, alkyl quaternary ammonium ethoxylate, and alkyl diphenyl ether disulfonate; Step 2: Before production, keep cardanol polyoxyethylene ether at a constant temperature of 20-40°C for 30 min - 1 h; Step 3: Add alkyl quaternary ammonium ethoxylate, C11 ethoxylated alcohol, C12-C14 secondary alcohol ethoxylate, and cardanol polyoxyethylene ether to deionized water in sequence and stir at room temperature; Step 4: Finally, continuously stir in the above mixture and slowly add alkyl diphenyl ether disulfonate until the system is uniformly transparent.

[0006] Further, in Step 2: Before production, keep cardanol polyoxyethylene ether at a constant temperature of 35°C for 45 min.

[0007] Further, in Step 3, stir at room temperature for 1 h until the system is homogeneous and clear.

[0008] Further, after the addition in Step 4 is completed, it lasts for more than 30 minutes until the system becomes transparent one by one.

[0009] Further, the rotation speed of the stirring is 30 rmp.

[0010] Advantages of the present invention: It is convenient to prepare, improves work efficiency. The raw materials used are environmentally friendly surfactants from natural sources, with low odor, easy to degrade, free of alkylphenol polyoxyethylene ethers, green and environmentally friendly. The new surfactant has good durability and a lower addition amount compared to conventional surfactants. Embodiment

[0011] The following further clarifies the present invention in combination with specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions, and the words "inner" and "outer" respectively refer to the directions towards or away from the geometric center of a specific component.

[0012] A preparation method of a surfactant containing alkyl quaternary ammonium ethoxylate, comprising the following steps: Step 1: Collect raw materials; the raw materials include C11 ethoxylated alcohol, C12-C14 secondary alcohol ethoxylate, cardanol polyoxyethylene ether, alkyl quaternary ammonium ethoxylate and alkyl diphenyl ether disulfonate; Step 2: Keep the cardanol polyoxyethylene ether at a constant temperature of 35 °C for 40 minutes before production; Step 3: Add alkyl quaternary ammonium ethoxylate, C11 ethoxylated alcohol, C12-C14 secondary alcohol ethoxylate, and cardanol polyoxyethylene ether to deionized water in sequence, and stir at room temperature for 1 hour until the system is homogeneous and clear; Step 4: Finally, continuously stir in the above mixture and slowly add alkyl diphenyl ether disulfonate. After the addition is completed, it lasts for more than 30 minutes until the system becomes transparent one by one; the rotation speed of the stirring is 30 rmp.

[0013] The preparation method of this embodiment has better oil removal ability than conventional alkylphenol polyoxyethylene ethers and is also easy to degrade.

Claims

1. A method for preparing a surfactant containing alkyl quaternary ammonium ethoxylate, characterized in that: comprising the following steps: Step 1: Collect raw materials; the raw materials include C11 ethoxylated alcohol, C12-C14 secondary alcohol ethoxylate, cardanol polyoxyethylene ether, alkyl quaternary ammonium ethoxylate, and alkyl diphenyl ether disulfonate; Step 2: Before production, keep the cardanol polyoxyethylene ether at a constant temperature of 20-40 °C for 30 min - 1 h; Step 3: Add alkyl quaternary ammonium ethoxylate, C11 ethoxylated alcohol, C12-C14 secondary alcohol ethoxylate, and cardanol polyoxyethylene ether to deionized water in sequence and stir at room temperature; Step 4: Finally, continuously stir in the above mixture and slowly add alkyl diphenyl ether disulfonate until the system is uniformly transparent.

2. The preparation method of a surfactant containing alkyl quaternary ammonium ethoxylate according to claim 1, characterized in that: In Step 2: Before production, keep the cardanol polyoxyethylene ether at a constant temperature of 35 °C for 45 min.

3. The preparation method of a surfactant containing alkyl quaternary ammonium ethoxylate according to claim 1, characterized in that: In Step 3, stir at room temperature for 1 h until the system is homogeneous and clear.

4. The preparation method of a surfactant containing alkyl quaternary ammonium ethoxylate according to claim 1, characterized in that: After the addition in Step 4, continue for more than 30 min until the system is uniformly transparent.

5. The preparation method of a surfactant containing an alkyl quaternary ammonium ethoxylate according to claim 1, characterized in that: The rotation speed of the stirring is 30 rmp.