Cationic styrene acrylate emulsion as well as preparation method and application thereof
A styrene-acrylic emulsion and cationic technology, applied in the direction of adding water repellents, can solve the problems of harsh papermaking environment and troublesome operation, and achieve the effects of improving water solubility, enhancing surface strength, and improving fiber adsorption and retention.
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[0029] Example 1
[0030] Synthesis of cationic styrene-acrylic emulsion:
[0031] a) Mix 25 g of n-butyl acrylate, 70 g of styrene and 5 g of acrylic acid to make a mixed monomer. spare.
[0032] b) 0.07 g of ethylene glycol fatty acid ester, 0.05 g of polyethylene oxide (20) sorbitan monooleate (Tween 80), and 0.1 g of potassium persulfate are dissolved in 10 g of deionized water. spare.
[0033] c) Dissolve 0.6 g of p-vinylbenzyltrimethylammonium chloride in 20 deionized water for use.
[0034] d) Add 0.4g of ethylene glycol fatty acid ester, 0.1g of polyethylene oxide (20) sorbitan monooleate (Tween 80), 0.2g of potassium persulfate and 50g of the mixed monomers in the 80ga) step Dissolve deionized water into an aqueous solution and stir for 30 minutes. spare.
[0035] e) Add 0.05g ethylene glycol fatty acid ester, 0.05g polyethylene oxide (20) sorbitan monooleate (Tween 80), 0.1g potassium persulfate and 23.6 In an aqueous solution of g deionized water, react at 70 pieces for 4...
Example Embodiment
[0037] Example 2
[0038] Synthesis of cationic styrene-acrylic emulsion:
[0039] a) Mix 50g of n-butyl acrylate, 45g of styrene and 5g of acrylic acid to make a mixed monomer. spare.
[0040] b) Dissolve 0.25g sorbitan trioleate, 0.2g polyethylene oxide (20) sorbitan monooleate (Tween 80), and 0.4g potassium persulfate in 45g deionized water. spare.
[0041] c) Dissolve 0.5 g of p-methylbenzyltrimethylammonium chloride in 20 deionized water. spare.
[0042] d) Add the mixed monomers in the 80ga) step to 0.4g sorbitan trioleate, 0.1g polyethylene oxide (20) sorbitan monooleate (Tween 80), 0.2g potassium persulfate Dissolve it with 50g deionized water into an aqueous solution, and stir for 30 minutes. spare.
[0043] e) Add 0.05g sorbitan trioleate, 0.05g polyethylene oxide (20) sorbitan monooleate (Tween 80), 0.1g potassium persulfate to the mixed monomers in step 20ga) In an aqueous solution of 23.6 g of deionized water, react with 70 pieces for 40 minutes, and then add dropwise ...
Example Embodiment
[0045] Example 3
[0046] Synthesis of cationic styrene-acrylic emulsion:
[0047] a) Mix 25 g methyl acrylate, 70 g styrene and 5 g methacrylic acid to make a mixed monomer. spare.
[0048] b) 0.07 g of polyoxypropylene hard fatty acid ester, 0.05 g of polyoxyethylene (20) sorbitan monostearate (Tween 60), and 0.1 g of potassium persulfate are dissolved in 10 g of deionized water. spare.
[0049] c) Dissolve 0.7 g of p-methylbenzyltrimethylammonium chloride in 20 deionized water. spare.
[0050] d) Add the mixed monomers in step 80ga) to 0.4g polyoxypropylene hard fatty acid ester, 0.1g polyoxyethylene (20) sorbitan monostearate (Tween 60), 0.2g sodium persulfate Dissolve it with 50g deionized water into an aqueous solution, and stir for 30 minutes. spare.
[0051] e) Add the mixed monomers in step 20ga) to 0.05g polyoxypropylene hard fatty acid ester, 0.05g polyoxyethylene (20) sorbitan monostearate (Tween 60), 0.1g sodium persulfate In an aqueous solution of 23.6 g of deionized ...
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