Method for preparing melamine phosphonate flame-retardant-anti-crease integrated dressing agent for cotton
A technology of melamine and phosphonate, which is applied in fiber processing, textile and papermaking, plant fiber and other directions, can solve the problems of unfriendly environment, low bond energy, etc. The effect of facilitating industrial production
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[0029] Example 1
[0030] (1) Preparation of reactive melamine phosphonate flame-retardant-anti-wrinkle integrated finishing agent FR15 for cotton
[0031] Take 76.1g of 37% formaldehyde, 12.1g of water, stir, adjust pH=9.0 with 10% NaOH solution, put in 11.8g of melamine, increase the temperature, control the exothermic reaction, keep it at 70℃-100℃ until crystals precipitate, and then stand still After being kept for 3 to 4 hours, the temperature is lowered, the waste water and free formaldehyde are separated, and then dried at 55°C to obtain a product (I) with a water content of <15%.
[0032] Put 64.6g methanol into the reactor, adjust the pH=2.0 with hydrochloric acid, add 32.7g product (I), keep the temperature for 15-30min after the product (I) is completely dissolved, adjust the pH=9.0 with NaOH, filter to remove the salt, vacuum pump The excess methanol is filtered to obtain the product (II).
[0033] Add 106.34g of product (II) and 67.38g of dimethyl phosphite into a fou...
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