Anionic polymer surfactant with comb structure and preparation method thereof
A surfactant, anionic technology, applied in the field of ionic polymer surfactant and its preparation, can solve the problem of low surface activity, and achieve the effect of stable appearance, good coverage and encapsulation effect, and high viscosity
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[0044] Above-mentioned kind has the preparation method of comb structure anionic polymer surfactant, comprises the steps:
[0045] (1) Synthesis of pentadecenyl (alk) base metaphenol oligomers: (x+2) moles of refined pentadecenyl (alk) base metaphenols are put into the reactor, and Add 0.2-2.0% of the mass of )-based interphenol into catalyst I, heat up to 50-80°C, add (x+1) moles of small molecule linking agent in batches, and then heat up to 80-100°C in a nitrogen atmosphere to reflux React for 1 to 3 hours, then heat up to 100 to 180°C for reflux for 1 to 3 hours, then vacuumize to remove small molecules such as water, hydrogen halide, and carry out polycondensation reaction to obtain pentadecenyl (alkyl) metaphenol polymers;
[0046] Wherein, the catalyst I is one or a mixture of two or more acidic or basic compounds.
[0047] Acidic compounds include various inorganic acids, organic acids or other acidic strong acid and weak base salt compounds. Among them, inorganic ac...
Embodiment 1
[0064] Put 600g of refined pentadecenyl (alkyl) m-phenol into the reactor, add 1.8g of p-toluenesulfonic acid, raise the temperature to 50-80°C, add 30g of formaldehyde in fractions, and then raise the temperature to 80-100°C in a nitrogen atmosphere. °C for reflux reaction for 2 hours, then raised to 100-180 °C for reflux reaction for 2 hours, vacuum dehydration for 2 hours, removed about 18g of water, and obtained pentadecenyl (alkyl) meta-phenol oligomer.
[0065] Take 614g of refined pentadecenyl (alkyl) meta-phenol oligomers and put them into a high-pressure reactor, add 3.8g of 50% potassium hydroxide solution, carry out nitrogen replacement, control the vacuum degree ≥ -0.095MPa, and replace the pressure to 0.15-0.25 MPa; after the nitrogen replacement is completed, the temperature is raised to 110-130°C for dehydration. Heat preservation and aging reaction for 30 minutes, lower the temperature to 65-75°C, and then add an appropriate amount of acetic acid to neutralize ...
Embodiment 2
[0070] Put 600g of refined pentadecenyl (alkyl) metaphenol and 304g of pentadecyl metaphenol into the reactor, add 6g of oxalic acid, raise the temperature to 50-80°C, add 60g of formaldehyde in four times, and then in nitrogen atmosphere, Heat up to 80-100°C for reflux reaction for 2 hours, then heat up to 100-180°C for reflux reaction for 2 hours, vacuum dehydration for 2 hours, remove 36g of water, and obtain pentadecenyl (alkyl) meta-phenol oligomer.
[0071] Take 940g of refined pentadecenyl (alkyl) meta-phenol oligomer and put it into a high-pressure reactor, add 9.4g of 30% potassium methylate solution, carry out nitrogen replacement, control the vacuum degree ≥ -0.095MPa, and replace the pressure to 0.15-0.25MPa ;After the nitrogen replacement is completed, the temperature is raised to 110-130°C for dehydration. After the dehydration is completed, the temperature is raised to 135-160°C, and 1320g of ethylene oxide is added for ethoxylation reaction. After the addition o...
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