Flame retardant polymeric MPP compound and preparation method thereof
A polymerized and compound technology, applied in the field of melamine formaldehyde resin polyphosphate compounds and their preparation, can solve the problems of easy sublimation and escape of melamine, poor processing performance and mechanical properties, high polarity and easy water absorption, etc., and achieves good application development. Prospects, improved mechanical properties, the effect of large molecular weight
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0032] Example 1 Add 3.31 g (0.11 mol) of paraformaldehyde and 60 ml of water in a 250 ml four-necked flask equipped with a stirrer, a thermometer and a high-efficiency reflux condenser, stir and heat up to 55 ° C until all dissolve, and adjust with 25% ammonia water When the pH of the reaction solution is between 8.0 and 9.0, add 12.61g (0.10mol) of melamine, continue to stir and heat up to 75°C, keep the pH of the solution between 8.2 and 8.5 during the process, and generate methylol melamine, continue at 75°C Keep it warm for 40 minutes, lower the temperature to 60°C, then use 10% formic acid solution to adjust the pH of the reaction solution between 6.0 and 6.5, keep it warm for 40 minutes, until a small amount of white solid precipitates out of the removed solution in the water, stop the reaction immediately and drop Add 25% ammonia water to adjust the pH of the reaction solution to 8.0 to obtain a colorless and transparent intermediate melamine formaldehyde resin solution...
Embodiment 2
[0033]Example 2 Add 3.91 g (0.13 mol) of paraformaldehyde and 60 ml of water into a 250 ml four-neck flask equipped with a stirrer, a thermometer and a high-efficiency reflux condenser, stir and heat up to 55 ° C until all dissolve, and adjust with 25% ammonia water When the pH of the reaction solution is between 8.0 and 9.0, add 12.61g (0.10mol) of melamine, continue to stir and heat up to 75°C, keep the pH of the solution between 8.2 and 8.5 during the process, and generate methylol melamine, continue at 75°C Insulate and react for 40 minutes, lower the temperature to 60°C, then use 10% formic acid solution to adjust the pH of the reaction solution between 6.0 and 6.5, and insulate for 50 minutes, until a small amount of white solid precipitates out of the removed solution in the water, stop the reaction immediately and drop Add 25% ammonia water to adjust the pH of the reaction solution to 8.0 to obtain a colorless and transparent intermediate melamine formaldehyde resin sol...
Embodiment 3
[0034] Example 3 Add 4.51 g (0.15 mol) of paraformaldehyde and 60 ml of water into a 250 ml four-necked flask equipped with a stirrer, a thermometer and a high-efficiency reflux condenser, stir and heat up to 55° C. until completely dissolved, and adjust with 25% ammonia water When the pH of the reaction solution is between 8.0 and 9.0, add 12.61g (0.10mol) of melamine, continue to stir and heat up to 75°C, keep the pH of the solution between 8.2 and 8.5 during the process, and generate methylol melamine, continue at 75°C Insulate and react for 40 minutes, lower the temperature to 60°C, then use 10% formic acid solution to adjust the pH of the reaction solution between 6.0 and 6.5, and insulate for 60 minutes, until a small amount of white solid precipitates out of the removed solution in the water, stop the reaction immediately and drop Add 25% ammonia water to adjust the pH of the reaction solution to 8.0 to obtain a colorless and transparent intermediate melamine formaldehyd...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More