Preparation method of BMA (Butyl Methacrylate)-MMA (Methl Methacrylate) solid bead copolymer resin
A bead copolymer resin, solid technology, used in the field of industrial resins, to achieve the effects of good solubility, strong dispersibility and high transparency
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Embodiment 1
[0018] (1) Ingredients: Take 30 parts of MMA, 70 parts of BMA, 1.2 parts of initiator, 0.4 parts of molecular weight regulator, 1 part of auxiliary dispersant, 8 parts of dispersant and 180 parts of deionized water, and set aside;
[0019] Wherein, the dispersant is a polyvinyl alcohol dispersant, the auxiliary dispersant is one or more of C6-C14 higher alcohols, the molecular weight regulator is n-dodecanethiol, and the initiator is benzoyl peroxide.
[0020] (2) Reaction: Put all the deionized water and dispersant prepared in step (1) into the kettle, start stirring, and raise the temperature to 35°C. Add BMA, MMA, molecular weight regulator, and initiator into the reaction kettle, make the temperature in the reaction kettle 35°C, stir for 50 minutes; then raise the temperature to 65°C, and react at this temperature for 60 minutes, then put the dispersant into In the kettle, continue to react for 11 hours.
[0021] (3) Washing: Take the reaction solution after the reaction ...
Embodiment 2
[0024] (1) Ingredients: Take 45 parts of MMA, 55 parts of BMA, 0.8 parts of initiator, 0.8 parts of molecular weight regulator, 1.8 parts of auxiliary dispersing agent, 7 parts of dispersing agent and 200 parts of deionized water, and set aside
[0025] Wherein, the dispersant is methyl cellulose, the auxiliary dispersant is one or more of C6-C14 higher alcohols, the molecular weight regulator is n-dodecanethiol, and the initiator is benzoyl peroxide.
[0026] (2) Reaction: Put all the deionized water and dispersant prepared in step (1) into the kettle, start stirring, and raise the temperature to 50°C. Add BMA, MMA, molecular weight modifier and initiator all into the reactor, make the temperature inside the reactor be 50°C, and stir for 40 minutes. Afterwards, the temperature was raised to 75° C., and the reaction was carried out at this temperature for 40 minutes, and then the dispersant was put into the kettle, and the reaction was continued for 10 hours.
[0027] (3) Was...
Embodiment 3
[0030] (1) Ingredients: 80 parts of BMA, 50 parts of MMA, 0.8 parts of molecular weight modifier, 2 parts of initiator, 10 parts of dispersant, 3 parts of auxiliary dispersant and 250 parts of deionized water, for later use;
[0031] The dispersant is a graft copolymer of polyvinylpyrrolidone and methylcellulose; the molecular weight regulator is n-dodecanethiol; the auxiliary dispersant is a mixture of one or more substances in the higher alcohols of C6-C14 ; The initiator is dibenzoyl peroxide.
[0032] (2) Reaction: first add the deionized water and dispersing agent prepared in step (1) into the reaction kettle, start stirring, and raise the temperature to 40°C; then put all the initiator, molecular weight regulator, BMA and MMA into the In the reaction kettle, stir at 40°C for 50 minutes and then heat up to 80°C; after reacting at the above temperature for 60 minutes, add the dispersant to the reaction and continue the reaction for 9 hours;
[0033] (3) Washing: Take the ...
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