Comb-shaped dispersant, preparation method and application thereof, and water-based inkjet color paste
A dispersant and comb-like technology, applied in the field of comb-like dispersant and its preparation, can solve problems such as reducing plugging and disconnecting
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[0039] The present invention also provides the preparation method of the comb-shaped dispersant described in the above scheme, comprising the following steps:
[0040] Mixing the main chain anchoring monomer, epoxy monomer, initiator and organic solvent to carry out the first polymerization reaction to obtain a main chain prepolymer solution;
[0041] The second polymerization reaction is carried out by mixing the polyetheramine macromonomer and the main chain prepolymer solution to obtain a comb-shaped dispersant.
[0042] In the present invention, the main chain anchoring monomer, the epoxy monomer, the initiator and the organic solvent are mixed to carry out the first polymerization reaction to obtain the main chain prepolymer solution. In the present invention, the mixing to carry out the polymerization preferably includes: mixing the main chain anchoring monomer and the epoxy monomer to obtain a premixed solution A; mixing an initiator and a part of an organic solvent to ...
Embodiment 1
[0068] Mix 348.5 g of main chain anchoring monomer 2-phenoxyethyl acrylate and 51.5 g of epoxy monomer glycidyl methacrylate to obtain premix A; then add 100 g of dipropylene glycol and 25 g of azobisisoheptanenitrile Mix and stir until dissolved to obtain premix B; introduce nitrogen into a reaction flask equipped with a condensation reflux device, add 475 g of dipropylene glycol as a solvent, and stir and heat to 80°C; then premix A and premix B, respectively, at 2.9 The addition rate of g / min and 0.7g / min was added into the reaction flask at the same time for reaction; after the addition, the reaction continued for 2 hours, and the residual monomer amount was detected to be less than 3wt% to terminate the reaction, and the main chain prepolymer with a solid content of 40% was obtained. Then add polyetheramine macromonomer 761g JEFFAMINE M3085 into the main chain prepolymer solution, mix, heat and stir to dissolve at 110°C. After 2 hours of reaction, a comb-like dispersant so...
Embodiment 2
[0071] Mix 316.8 g of main chain anchoring monomer 2-phenoxyethyl acrylate with 86.4 g of dimethylaminoethyl dimethacrylate and 46.9 g of epoxy monomer glycidyl methacrylate to obtain premix A; Then 100 g of n-propanol and 25 g of azobisisovaleronitrile were mixed and stirred until dissolved to obtain a premixed solution B; nitrogen was introduced into the reaction flask equipped with a condensation reflux device, and 400 g of n-propanol as a solvent was added, and heated to 80 ° C Then add the premix solution A and the premix solution B at the rate of 2.7g / min and 0.6g / min, respectively, into the reaction flask for reaction; after the addition is completed, the reaction continues for 2 hours, and the residual monomer amount is detected to be less than 3wt% Terminate the reaction to obtain a main chain prepolymer solution with a solid content of 45%; then add 527g of polyetheramine macromonomer JEFFAMINE M2070 into the main chain prepolymer solution, mix, heat and stir to disso...
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Abstract
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