发明名称 |
PROCESS FOR THE PREPARATION OF A REDISPERSIBLE CORE-SHELL POLYMER |
摘要 |
Redispersible polymer powders made by core-shell polymers having an alkali-soluble emulsion polymer shell and an aqueous-insoluble emulsion polymer core wherein the core and the shell polymers are chemically grafted by utilizing a polyfunctional compound are described. The core-shell polymers are produced by a two-stage sequential emulsion polymerization process in which an alkali-insoluble emulsion polymer core is polymerized in the presence of an alkali-solubilized emulsion polymer. When the core-shell polymer powders of this invention are employed as a cement modifier, improvements in the powder physical properties and cement mortar properties are realized. |
申请公布号 |
AU1869392(A) |
申请公布日期 |
1993.01.14 |
申请号 |
AU19920018693 |
申请日期 |
1992.06.30 |
申请人 |
ROHM AND HAAS COMPANY |
发明人 |
MIN-CHI TSAI;GEORGE ARTHUR PAPSIN JR.;SHANG-JAW CHIOU |
分类号 |
C08F265/00;C08F265/06;C08F291/00 |
主分类号 |
C08F265/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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