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[Chemical Knowledge]：Production and manufacturing method and process flow of high-activity polyether polyol

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The manufacturing method
of high-activity polyether polyol
1. Introduction

High-activity polyether polyol is an important raw material for chemical production, widely used in polyurethane foam, elastomers, adhesives, coatings and other fields. With the continuous development of science and technology, the manufacturing methods of high-activity polyether polyols have been continuously improved to improve their performance and quality. This article will introduce a common high-activity polyether polyol manufacturing method.

2. raw materials and equipment

1 raw materials: ethylene oxide, acrylic acid, catalyst (such as potassium hydroxide), polymerization inhibitor, etc.
2. Equipment: reactor, stirrer, thermometer, pressure gauge, condenser, etc.

3. Manufacturing Steps

1. Add the catalyst to the reactor, add an appropriate amount of water, and stir well.
2. While stirring, ethylene oxide is gradually added to control the reaction temperature to react ethylene oxide with water to form ethylene glycol.
3. Acrylic acid is added to the reactor, and stirring is continued to react acrylic acid with ethylene glycol to form acrylate.
4. In the reaction process, it is necessary to control the reaction temperature and pressure to ensure the smooth progress of the reaction.
5. After completion of the reaction, a polymerization inhibitor is added to stop the reaction.
6. Post-treatment of the reaction product, such as dehydration, impurity removal, etc., to obtain a highly active polyether polyol product.
Precautions for
4.

1. In the manufacturing process, it is necessary to strictly control the reaction temperature and pressure to prevent the occurrence of side reactions.
2. The selection and dosage of the catalyst have a great influence on the reaction speed and product quality, and need to be adjusted according to the actual situation.
3. The addition time and amount of the polymerization inhibitor also need to be properly controlled to ensure the smooth progress of the reaction.
4. In the post-processing process, it is necessary to pay attention to the purity and quality of the product to ensure the performance and use effect of the product.

5. conclusion The manufacturing method of

high activity polyether polyol involves multiple reaction steps and operation links, and it is necessary to strictly control various parameters and operating conditions to ensure the quality and performance of the product. Through the manufacturing method introduced in this paper, high-quality and high-activity polyether polyol products can be obtained, which provides important raw material guarantee for the field of chemical production.

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