A kind of anti-coking agent and preparation method thereof
A carbonation and modification technology, which is applied in chemical instruments and methods, natural water treatment, special compound water treatment, etc., can solve problems such as time-consuming and labor-intensive, affecting production progress, and reducing evaporator efficiency, so as to inhibit polymerization reaction, The effect of slowing down the speed of carbonization and easy water solubility
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Embodiment 1
[0032] First prepare modified silicone oil according to the following steps:
[0033] a. Weigh a specified amount of allyl glycidyl ether into the reaction kettle, add platinum catalyst, the active ingredient of platinum catalyst is 0.002% of the mass of allyl glycidyl ether monomer, after stirring evenly, add hydrogen content of 1.5 %, hydrogen-containing silicone oil with a viscosity of 35mPa·s and cyclohexanone of equal mass, control the molar ratio of the Si-H bond of the hydrogen-containing silicone oil to the unsaturated double bond of the monomer to be 1:1, stir and heat to 60°C for 5h ;
[0034] b. Add a specified amount of diethanolamine to the reaction kettle, the molar ratio of the epoxy group to the diethanolamine molecule is 1:1.5, incubate at 80°C for 3 hours to remove unreacted diethanolamine and solvent cyclohexanone, That is, the modified silicone oil is obtained.
[0035] Finally, take the following components by weighing the following components relative t...
Embodiment 2
[0040] First prepare the modified silicone oil according to the following steps:
[0041] a. Weigh a specified amount of glycidyl acrylate and add it to the reaction kettle, add platinum catalyst, the active ingredient of platinum catalyst is 0.002% of the mass of glycidyl acrylate monomer, after stirring evenly, add hydrogen content of 1.3%, viscosity 100mPa s hydrogen-containing silicone oil and cyclohexanone of equal mass, control the molar ratio of the Si-H bond of the hydrogen-containing silicone oil to the unsaturated double bond of the monomer to be 1:1, stir and heat to 60°C for 5 hours;
[0042] b. Add a specified amount of diethanolamine to the reaction kettle, the molar ratio of the epoxy group to the diethanolamine molecule is 1:1.5, incubate at 80°C for 3 hours to remove unreacted diethanolamine and solvent cyclohexanone, That is, the modified silicone oil is obtained.
[0043] Finally, take the following components by weighing the following components relative t...
Embodiment 3
[0047] First prepare the modified silicone resin according to the following steps:
[0048] a. Weigh a specified amount of glycidyl methacrylate and add it to the reaction kettle, and add a platinum catalyst. The active ingredient of the platinum catalyst is 0.002% of the mass of glycidyl methacrylate monomer. After stirring evenly, add % Hydrogen-containing silicone oil with a viscosity of 20mPa·s and equal mass of cyclohexanone, control the molar ratio of the Si-H bond of the hydrogen-containing silicone oil to the unsaturated double bond of the monomer to be 1:1, stir and heat to 80°C for 5h.
[0049] b. Add a specified amount of diisopropanolamine to the reaction kettle, the molar ratio of epoxy groups to diisopropanolamine molecules is 1:1.5, and keep it at 80°C for 3 hours to remove unreacted diisopropanolamine by vacuum distillation. Propanolamine and solvent cyclohexanone are modified silicone oils.
[0050] Finally, take the following components by weighing the follo...
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