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公开(公告)号：US08252873B1
公开(公告)日：2012-08-28
申请号：US13446411
申请日：2012-04-13
Applicant: Herbert Gartner , Jorg Harren , Marc Hager , Harald Plochinger , Daniel Fricker , Hans-Peter Kohler , Sabine Auernig
Inventor： Herbert Gartner , Jorg Harren , Marc Hager , Harald Plochinger , Daniel Fricker , Hans-Peter Kohler , Sabine Auernig
IPC: C08F2/00 , C08F4/00 , C08F4/72 , C08F36/00 , C08F210/00
CPC classification number: C08F2/10 , C08F4/40 , C08F220/06 , C08K5/092 , C08K5/175
Abstract: The present invention relates to superabsorbent polymer comprising the comprising the free radical polymerization product of an aqueous monomer mixture containing at least one α,β-ethylenically unsaturated monomer; at least one monomer having at least two α,β-ethylenically unsaturated groups; a crosslinking agent having at least two polymerizable double bonds; iron ions in an amount of from about 0.1 to about 3 wppm based on the total weight of the aqueous monomer mixture; and at least one chelating agent in an amount to provide a molar ratio of chelating agent to iron ion of from about 0.8 to about 4.0.
Abstract translation: 本发明涉及超吸收聚合物，其包含含有至少一种α，β-烯属不饱和单体的含水单体混合物的自由基聚合产物; 至少一种具有至少两个α，β-烯属不饱和基团的单体; 具有至少两个可聚合双键的交联剂; 相对于含水单体混合物的总重量，铁离子的量为约0.1至约3wppm; 和至少一种螯合剂，其量使得螯合剂与铁离子的摩尔比为约0.8至约4.0。
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公开(公告)号：US08198385B2
公开(公告)日：2012-06-12
申请号：US12942633
申请日：2010-11-09
Applicant: Herbert Gartner , Jorg Harren , Marc Hager , Harald Plochinger , Daniel Fricker , Hans-Peter Kohler , Sabine Auernig
Inventor： Herbert Gartner , Jorg Harren , Marc Hager , Harald Plochinger , Daniel Fricker , Hans-Peter Kohler , Sabine Auernig
IPC: C08F2/00 , C08F4/72 , C08F20/06 , C08F118/02 , C08F210/00
CPC classification number: C08F2/10 , C08F4/40 , C08F220/06 , C08K5/092 , C08K5/175
Abstract: The present invention relates to process for the preparation of a superabsorbent polymer comprising the steps of a) subjecting an aqueous monomer mixture containing at least one α,β-ethylenically unsaturated monomer; at least one monomer bearing at least two α,β-ethylenically unsaturated groups; iron ions in an amount of 0.1 to 3 wppm based on the total weight of the aqueous monomer mixture; and at least one chelating agent in an amount to provide a mol ratio of chelating agent to iron ion of 0.8 to 4.0 to free radical polymerization in an reactor to obtain a super-absorbent polymer; and b) recovering the superabsorbent polymer, whereby if the process is continuous and is run in an agitated reactor the upper limit of the mol ratio of chelating agent to iron ion is 4.0 for a throughput of total reaction mixture through the reactor of at most 1.3 kg/h per liter reactor volume.
Abstract translation: 本发明涉及制备超吸收性聚合物的方法，包括以下步骤：a）使含有至少一种α，β-烯属不饱和单体的含水单体混合物; 至少一种含有至少两个α，β-烯属不饱和基团的单体; 相对于含水单体混合物的总重量，铁离子的量为0.1〜3wppm; 和至少一种螯合剂，其量使得螯合剂与铁离子的摩尔比为0.8至4.0，以在反应器中进行自由基聚合以获得超吸收性聚合物; 并且b）回收超吸收性聚合物，由此如果该方法是连续的并且在搅拌反应器中运行，螯合剂与铁离子的摩尔比的上限为4.0，对于通过反应器的总反应混合物的通量为至多1.3 kg / h每升反应器体积。
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公开(公告)号：US20110245436A1
公开(公告)日：2011-10-06
申请号：US12942633
申请日：2010-11-09
Applicant: Herbert Gartner , Jorg Harren , Marc Hager , Harald Plochinger , Daniel Fricker , Hans-Peter Kohler , Sabine Auernig
Inventor： Herbert Gartner , Jorg Harren , Marc Hager , Harald Plochinger , Daniel Fricker , Hans-Peter Kohler , Sabine Auernig
CPC classification number: C08F2/10 , C08F4/40 , C08F220/06 , C08K5/092 , C08K5/175
Abstract: The present invention relates to process for the preparation of a superabsorbent polymer comprising the steps of a) subjecting an aqueous monomer mixture containing at least one α,β-ethylenically unsaturated monomer; at least one monomer bearing at least two α,β-ethylenically unsaturated groups; iron ions in an amount of 0.1 to 3 wppm based on the total weight of the aqueous monomer mixture; and at least one chelating agent in an amount to provide a mol ratio of chelating agent to iron ion of 0.8 to 4.0 to free radical polymerization in an reactor to obtain a super-absorbent polymer; and b) recovering the superabsorbent polymer, whereby if the process is continuous and is run in an agitated reactor the upper limit of the mol ratio of chelating agent to iron ion is 4.0 for a throughput of total reaction mixture through the reactor of at most 1.3 kg/h per liter reactor volume.
Abstract translation: 本发明涉及制备超吸收性聚合物的方法，包括以下步骤：a）使含有至少一种α，β-烯属不饱和单体的含水单体混合物; 至少一种含有至少两个α，β-烯属不饱和基团的单体; 相对于含水单体混合物的总重量，铁离子的量为0.1〜3wppm; 和至少一种螯合剂，其量使得螯合剂与铁离子的摩尔比为0.8至4.0，以在反应器中进行自由基聚合以获得超吸收性聚合物; 并且b）回收超吸收性聚合物，由此如果该方法是连续的并且在搅拌反应器中运行，螯合剂与铁离子的摩尔比的上限为4.0，对于通过反应器的总反应混合物的通量为至多1.3 kg / h每升反应器体积。
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