Macromolecular environment-friendly formaldehyde removal spray and preparation method thereof
An environmentally friendly, macromolecular technology, applied in separation methods, chemical instruments and methods, and dispersed particle separation, etc., can solve problems such as pollution, human harm, and impact on people's health, and achieve simple production processes, easy access to raw materials, and removal of Excellent effect of aldehyde effect
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Embodiment 1
[0037] Dehydrate PEG with a number average molecular weight Mn of 1000 at 100°C for 30 minutes, then cool to 50°C, take 53.8 grams and add it to a 500 ml three-necked flask, then add 28.2 grams of HDI, stir and heat up to 90°C for 2 hours. , add 9.0 grams of DMPA, 0.02 grams of DBTDL and 20 grams of acetone, stir and react at 70°C for 4 hours at a constant temperature, then add 10 grams of end-capping agent hydroxyethyl acrylate and 0.01 grams of polymerization inhibitor BHT, and react at 75°C for 2 hours to obtain a prepolymer with a double bond in the end group; then add 0.02 grams of initiator AIBN and 10 grams of acrylamide monomer to the double bond-terminated polymer prepolymer, and react at 60-80 ° C for 2 hours Cool down to 40°C, add neutralizing agent and stir for 1-5 minutes, then add 200 grams of water with a reference mass under high-speed shear stirring, and remove the solvent at 40-50°C and 0.01MPa vacuum after stirring for 20 minutes to obtain side Aqueous polym...
Embodiment 2
[0046] The number average molecular weight M n 1000 PEG was dehydrated at 100°C for 30 minutes and then cooled to 50°C. Take 43 grams and add it to a 500 ml three-neck flask, then add 28.2 grams of HDI, stir and heat up to 90°C for 2 hours, then add 9.0 grams of DMPA , 0.02 grams of DBTDL and 20 grams of acetone, stirred and reacted at 70°C for 4 hours at a constant temperature, then added 20 grams of end-capping agent hydroxyethyl acrylate and 0.01 grams of polymerization inhibitor BHT, and reacted at 75°C for 2 hours to obtain a terminal group containing Double bond prepolymer; then add 0.02 grams of initiator AIBN and 20 grams of acrylamide monomer to the double bond-terminated polymer prepolymer, react at 60-80°C for 2 hours and then cool down to 40°C. Add neutralizer and stir for 1-5 minutes, then add 200 grams of water with a reference mass under high-speed shear stirring, and remove the solvent at 40–50°C and 0.01MPa vacuum after stirring for 20 minutes to obtain a large ...
Embodiment 3
[0055] The number average molecular weight M n 1000 PPG was dehydrated at 100°C for 30 minutes and then cooled to 50°C. Take 43 grams and add it to a 500 ml three-neck flask, then add 28.2 grams of HDI, stir and heat up to 90°C for 2 hours, then add 9.0 grams of DMPA , 0.02 grams of DBTDL and 20 grams of acetone, stirred and reacted at 70°C for 4 hours at a constant temperature, then added 20 grams of end-capping agent hydroxyethyl acrylate and 0.01 grams of polymerization inhibitor BHT, and reacted at 75°C for 2 hours to obtain a terminal group containing Double bond prepolymer; then add 0.02 grams of initiator AIBN and 40 grams of acrylamide monomer into the double bond-terminated polymer prepolymer, react at 60-80°C for 2 hours and then cool down to 40°C. Add the neutralizing agent and stir for 1-5 minutes, then add 200 grams of water with a reference mass under high-speed shear stirring, and remove the solvent at 40-50°C and 0.01MPa vacuum after stirring for 20 minutes to ...
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