发明名称 |
PREPARATION OF WATER-SOLUBLE POLYMER POWDERS AND THEIR USE |
摘要 |
<p>Water-soluble polymer powders are prepared by polymerizing water-soluble ethylenically unsaturated monomers in a powder bed in the presence of polymerization initiators and water while maintaining the powder state, removing the heat of polymerization by distilling off water and circulating the reaction mixture, by a process in which water-insoluble organic peroxides which are liquid at 20.degree.C are used alone or as a mixture with up to 50% by weight, based on the initiator mixture, of water-soluble, organic azo initiators and/or waterinsoluble solid peroxy-containing compounds, as polymerization initiators.</p> |
申请公布号 |
CA1247796(A) |
申请公布日期 |
1988.12.27 |
申请号 |
CA19860508421 |
申请日期 |
1986.05.05 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
MESSMER, KARLHEINZ;HENNIG, KARL;DENZINGER, WALTER;HETTCHE, ALBERT;TRIESELT, WOLFGANG;RAUBENHEIMER, HANS-JUERGEN |
分类号 |
C08F2/00;C08F2/10;C08F2/36;C08F4/00;C08F4/04;C08F4/28;C08F4/32;(IPC1-7):C08F2/10;C08F2/34 |
主分类号 |
C08F2/00 |
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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