Preparation method of acrylic polymer
A technology for acrylic polymers and polymerized monomers, which is applied in the field of preparation of acrylic polymers. It can solve the problems of poor air permeability, environmental protection, and solvent volatilization of oily products, and achieve the effects of improving film-forming properties, improving cost performance, and stable reaction.
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[0007] Example 1: Under the protection of nitrogen, 195 grams of dehydrated polyester polyol CMA44, 1 gram of catalyst T-12 and 82 grams of polyisocyanate IPDI were reacted for 1.5 hours at 70-75 ° C. During the reaction, the Di-n-butylamine measures the content of NCO to judge the end point of the reaction, when the content of NCO is 2%-3% of the reaction solution weight, it is the end point of the reaction, when the reaction reaches the end point, add 13 grams of dimethylol propionic acid to react 1 Hours, the temperature of the reaction is 60-65 ° C, cooling to 40 ° C; then add triethylamine for neutralization reaction, triethylamine is 12 grams, then add a diluent solvent for dilution, the diluent solvent is water, 400 grams, In this way, the viscosity of the solution after the neutralization reaction is reduced, the chain extender is an aqueous solution of ethylenediamine, 8 grams of ethylenediamine, and 150 grams of water, emulsification and chain extension at normal temp...
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