Manufacturing method of a highly active polyether polyol
I. INTRODUCTION
A highly active polyether polyol is an important raw material for the production of chemicals, which is widely used in the fields of polyurethane foams, elastomers, adhesives, coatings and the like. With the continuous development of science and technology, the manufacturing methods of high-activity polyether polyols have been improved to enhance their performance and quality. In this paper, a common manufacturing method of highly active polyether polyol will be introduced.
II. Raw materials and equipment
1. Raw materials: ethylene oxide, acrylic acid, catalyst (e.g. potassium hydroxide), polymerization inhibitor, etc.
2. Equipment: reactor, stirrer, thermometer, pressure gauge, condenser and so on.
3. Manufacturing steps
1. Add the catalyst into the reactor, add appropriate amount of water and stir well.
2. While stirring, gradually add ethylene oxide and control the reaction temperature so that ethylene oxide reacts with water to form ethylene glycol.
3. Add acrylic acid to the reactor and continue stirring to react acrylic acid with glycol to form acrylate.
4. During the reaction, the reaction temperature and pressure need to be controlled to ensure that the reaction proceeds smoothly.
5. At the end of the reaction, a polymerization inhibitor is added to stop the reaction.
6. The reaction product is post-treated, such as dehydrating and removing impurities, etc., to obtain highly active polyether polyol products.
4. Precautions
1. During the manufacturing process, the reaction temperature and pressure need to be strictly controlled to prevent the occurrence of side reactions.
2. The selection and dosage of catalyst have great influence on the reaction speed and product quality, and need to be adjusted according to the actual situation.
3. The addition time and dosage of polymerizer also need to be controlled properly to ensure the smooth progress of the reaction.
4. In the post-treatment process, the purity and quality of the product need to be paid attention to in order to ensure the performance and use of the product.
V. Conclusion
The manufacturing method of highly active polyether polyol involves several reaction steps and operation links, and each parameter and operation condition needs to be strictly controlled to ensure the quality and performance of the product. Through the manufacturing method introduced in this paper, high-quality high-activity polyether polyol products can be obtained, providing important raw material guarantee for the field of chemical production.
