| 摘要 |
The invention refers to polymers composed of at least < 80 percent by weight of monomer of formula: wherein each R1, R2, R3 are H or alkyl of 1 to 3 carbon atoms, R4 is alkylene of 1 to 5 carbon atoms, and X is O or OH, used as auxiliaries in polymers aqueous dispersions drying and, in case of having a ponderal mean relative molecular weight of 5,000 to 35,000 additionally as protecting colloids, for polymers aqueous dispersions preparation, by polymerization method in free radical aqueous emulsion.
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