Acrylic hyperdispersing agent and preparation method thereof
A technology of hyperdispersant and acrylic acid, which is applied in chemical instruments and methods, transportation and packaging, dissolution, etc. It can solve the problems of weak dispersion ability of hyperdispersant and non-compliance with green production, and achieve low cost and short production cycle , the effect of super dispersing ability
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Embodiment 1
[0012] A preparation method of an acrylic hyperdispersant, adding acrylic acid, ethacrylic acid, butyl (meth)acrylate and maleic anhydride as reaction raw materials to a reaction kettle pre-installed with distilled water, and adding an initiator and a chain transfer agent Stir, wherein the proportioning of each raw material is: 40 parts of acrylic acid, 20 parts of ethacrylic acid, 10 parts of butyl (meth)acrylate, 0.8 part of maleic anhydride, (NH 4 ) 2 S 2 o 8 -NaHSO 3 0.8 parts of initiator, 0.2 parts of ethanol, 20 parts of NaOH, and 150 parts of distilled water. Control the reaction temperature at 50°C, the stirring speed at 400r / min, and the reaction time for 4h, then cool to 30°C; add NaOH to the cooled reaction solution, and react for 0.8h to obtain the finished hyperdispersant.
Embodiment 2
[0014] A preparation method of an acrylic hyperdispersant, adding acrylic acid, ethacrylic acid, butyl (meth)acrylate and maleic anhydride as reaction raw materials to a reaction kettle pre-installed with distilled water, and adding an initiator and a chain transfer agent Stir, wherein the proportioning of each raw material is: 60 parts of acrylic acid, 30 parts of ethacrylic acid, 30 parts of butyl (meth)acrylate, 1.2 parts of maleic anhydride, (NH 4 ) 2 S 2 o 8 -NaHSO 3 1.2 parts of initiator, 0.7 parts of ethanol, 50 parts of NaOH, and 150 parts of distilled water. Control the reaction temperature at 80°C, the stirring speed at 650r / min, and the reaction time for 6h, then cool to 50°C; add NaOH to the cooled reaction solution, and react for 1.5h to obtain the finished hyperdispersant.
Embodiment 3
[0016] A preparation method of an acrylic hyperdispersant, adding acrylic acid, ethacrylic acid, butyl (meth)acrylate and maleic anhydride as reaction raw materials to a reaction kettle pre-installed with distilled water, and adding an initiator and a chain transfer agent Stir, wherein the proportioning of each raw material is: 50 parts of acrylic acid, 24 parts of ethacrylic acid, 20 parts of butyl (meth)acrylate, 1 part of maleic anhydride, (NH 4 ) 2 S 2 o 8 -NaHSO 3 1 part of initiator, 0.5 part of ethanol, 35 parts of NaOH, 150 parts of distilled water. Control the reaction temperature at 60°C, the stirring speed at 500r / min, and the reaction time for 5h, then cool to 40°C; add NaOH to the cooled reaction solution and react for 1h to obtain the finished hyperdispersant.
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