What are the key points of polyether amine technology in use?

2020-04-19 11:42:18

When polyether amine technology is used, generally we need to know what physical and chemical properties it has, so that we can better use the product. Then for its use, we simply collated the following for you, hoping to help you.

1. It can be soluble in ethanol, water, alcohol and other organic solvents.

2. There are a lot of hydroxyl groups and ether bonds in polyether amines, which are very water-soluble and easily soluble in alcohol, so it is easy to clean with ethanol or water. If the water solubility of some products is not very high, it is basically no problem to use alcohol.

3. When polyether amine technology is in the process of formation, if it adheres to the skin, it can be washed with a large amount of water. When entering the eyes, wash the eyes with water for more than 15 minutes.

4. In case of spillage, the permeable substances such as sawdust, yellow sand and cloth shall be removed and washed away with a large amount of water.

5. Of course, there are many other cleaning agents that can be used properly. It's easy to dissolve them in water.

6. Polyether amines produced by polyether amines technology are generally transparent viscous liquid, non-volatile, colorless, yellowish, yellow, etc. It is heavier than water, can be mixed with water in any proportion, and can be dissolved in organic solvents such as alcohols. It is prepared by the addition polymerization of initiator (compound containing active hydrogen group) with EO, Po and Bo in the presence of catalyst.

7. The polyether amine technology with large production is to use glycerin (glycerin) as initiator and epoxide (PO and EO are used together generally). Various general products are produced by changing the feeding mode (mixed or separate adding), dosing ratio, feeding sequence and other conditions of Po and EO.

After more than ten years of research and experience, in the 21st century, represented by Yantai wanwei, China's Polyurethane manufacturing enterprises began to make a comprehensive breakthrough in the production scale, product types, technical level and other fields, and the leading enterprises entered the international stage. By 2017, there are five domestic isocyanate enterprises in China, including Wanhua chemical, Gansu Yinguang, Dongnan electrochemical, Cangzhou Dahua and Yantai Juli. Among them, Wanhua chemical has 600000 tons (Yantai) + 1.2 million tons (Ningbo) MDI capacity, and has become a world-class polyurethane production enterprise with independent intellectual property rights. There are many polyether polyol manufacturers, mainly including Shandong Dongda, CNOOC shell, Wanhua chemical, etc.

At the same time, China has become a large production base of polyurethane raw materials and a large production and consumption market of polyurethane products in the world. Polyurethane foam has become an important variety of polyurethane materials. Its output accounts for more than 50% of the total amount of polyurethane products. Synthetic leather size, shoe sole fluid, spandex and coatings also occupy a large proportion. The output, consumption and export volume of its products are ranked first in the world. In 2017, the consumption of polyurethane products in China was about 11.1 million tons (including solvents), and that of pure polyurethane resin was about 8.4 million tons.