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    • 7. 发明授权
    • Process for preparing aqueous polymer dispersions
    • 制备聚合物水分散体的方法
    • US06441082B1
    • 2002-08-27
    • US09402579
    • 1999-10-06
    • Hans-Peter WeitzelReiner Figge
    • Hans-Peter WeitzelReiner Figge
    • C08F224
    • C04B24/163C04B24/26C08F2/24
    • Redispersible polymer powders are prepared by emulsion polymerization of ethylenical, unsaturated monomers in the presence of a protective colloidal stabilizer containing 20 to 95 weight percent of polymerized monomers containing sulfonic acid or sulfonate groups, 5 to 80 weight percent of polymerized monomers containing amide groups or hydroxylalkyl groups, and up to 5 weight percent of polymerized monomers which are hydrophobic, water-insoluble ethylenically unsaturated compounds. The redispersible polymers are suitable for use in construction materials and coatings, and exhibit higher water resistance than similar polymers stabilized with polyvinyl alcohol as a colloidal stabilizer.
    • 可再分散的聚合物粉末通过在含有20至95重量%的含磺酸或磺酸盐基团的聚合单体的保护性胶体稳定剂存在下,通过乙烯性不饱和单体的乳液聚合制备,5-80重量%的含酰胺基的聚合单体或羟烷基 基团和高达5重量%的聚合单体,其是疏水的,不溶于水的烯键式不饱和化合物。 可再分散的聚合物适用于建筑材料和涂料,并且比用聚乙烯醇作为胶体稳定剂稳定的类似聚合物显示更高的耐水性。