Novel nitrogen-containing organic silicon flame retardant and preparation method of the flame retardant
A silicone and flame retardant technology, applied in the field of flame retardants, can solve the problems affecting the physical properties of flame retardant polymers, poor compatibility, large additions, etc., to achieve difficult migration, good compatibility, and enhanced compatibility effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0019] Weigh 20g (0.158mol) of melamine, 20g (0.147mol) of pentaerythritol, and 75g (0.355mol) of phenyltrichlorosilane, and add them to a three-necked flask with a stirrer, a thermometer, and a condenser tube (external gas absorption device), and then add 150ml of benzene, stirred, heated, refluxed at 80°C, the released HCl gas was absorbed by lye, stirred and reacted for 4 hours, no HCl gas was released by pH test paper, the reaction was stopped, and the benzene was removed by vacuum heating and evaporation (can be recycling). Cool slightly, add 150ml of distilled water, heat to 80°C and stir for half an hour, filter after cooling slightly, wash with distilled water until there are no chloride ions in the filtrate, and dry to obtain 74.5g of white loose powder with a yield of 98%. After burning in a muffle furnace at 300°C for 30 minutes, the weight loss was 7.2%.
Embodiment 2
[0021] The feeding of the reaction materials was the same as that in Example 1. The solvent was changed to 150 ml of toluene, the temperature was controlled at 100° C., and the reaction was stirred for 3 hours. It was detected that no HCl was released. Subsequent processing steps were the same as in Example 1 to obtain 73.8 g of the product with a yield of 97.1%. After burning in a muffle furnace at 300°C for 30 minutes, the weight loss was 6.9%.
Embodiment 3
[0023] Weigh 40g (0.316mol) of melamine, 40g (0.294mol) of pentaerythritol, and 150g (0.709mol) of phenyltrichlorosilane, and add them to a three-necked flask with a stirrer, a thermometer, and a condenser tube (external gas absorption device), and then add 300ml xylene, stirred, heated, temperature controlled at 120°C, stirred and reacted for 2 hours, no HCl gas was detected. Subsequent processing steps were the same as in Example 1 to obtain 148.5 g of the product with a yield of 97.7%. After burning in a muffle furnace at 300°C for 30 minutes, the weight loss was 7.1%.
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More