发明名称 |
Continuous process for the production of a superabsorbent polymer |
摘要 |
The present invention relates to a continuous process for the production of a superabsorbent polymer comprising providing an acidic liquid aqueous monomer mixture containing dissolved oxygen; continuously feeding the aqueous monomer mixture to a reactor; introducing a source of carbonate or hydrogen carbonate into the aqueous monomer mixture prior to entry into the reactor thereby forming a gas phase comprising carbon dioxide and at least a part of the dissolved oxygen, the gas phase being dispersed in the liquid phase; subjecting the gas/liquid mixture to at least partial phase separation immediately prior to or after entry into the reactor and at least partially removing the separated gaseous phase; subjecting the liquid phase in the reactor to free-radical polymerization to obtain the superabsorbent polymer, and continuously removing the superabsorbent polymer from the reactor. |
申请公布号 |
US8653210(B2) |
申请公布日期 |
2014.02.18 |
申请号 |
US201213561214 |
申请日期 |
2012.07.30 |
申请人 |
FRICKER DANIEL;GARTNER HERBERT;HAGER MARC;HARREN JORG;KOHLER HANS-PETER;PLOECHINGER HARALD;EVONIK DEGUSSA GMBH |
发明人 |
FRICKER DANIEL;GARTNER HERBERT;HAGER MARC;HARREN JORG;KOHLER HANS-PETER;PLOECHINGER HARALD |
分类号 |
C08F222/02 |
主分类号 |
C08F222/02 |
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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