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公开(公告)号：US20040097665A1
公开(公告)日：2004-05-20
申请号：US10614193
申请日：2003-07-08
发明人： Toshiaki Kuriyama , Yasuko Inui
IPC分类号： C08F002/00
CPC分类号： C08F126/00 , C08F6/006 , C08F226/10 , C08L39/00
摘要： A method for residual monomer diminution by which a residual monomer is speedily removed from an N-vinyl compound polymer or the like without posing a problem such as an increase in ash content; and a process for producing an N-vinyl compound polymer solution or powder which has a regulated pH and is free from a decrease in pH with time. The method comprises adding an organic acid having a boiling point of 140null C. or higher at ordinary pressure to anaqueous solution of an N-vinyl compound polymer. The process comprises adding an organic base to an aqueous N-vinyl compound polymer solution having a pH lower than 7.0 to thereby neutralize the solution and regulate the pH thereof. Those operations are conducted in a reaction vessel in which a gaseous phase is regulated so as to have an oxygen concentration of 5.0% by volume or lower.
摘要翻译： 残留单体减少的方法通过其残留单体从N-乙烯基化合物聚合物等中快速除去而不会引起诸如灰分含量增加的问题; 以及具有调节pH并且随着时间而不降低pH的N-乙烯基化合物聚合物溶液或粉末的制备方法。 该方法包括在常压下将沸点为140℃或更高的有机酸加入到N-乙烯基化合物聚合物的水溶液中。 该方法包括向pH低于7.0的N-乙烯基化合物水溶液水溶液中加入有机碱，从而中和溶液并调节其pH。 这些操作在调节气相以使氧浓度为5.0体积％以下的反应容器中进行。
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公开(公告)号：US07160957B2
公开(公告)日：2007-01-09
申请号：US10614193
申请日：2003-07-08
申请人： Toshiaki Kuriyama , Yasuko Inui
发明人： Toshiaki Kuriyama , Yasuko Inui
IPC分类号： C08F8/32
CPC分类号： C08F126/00 , C08F6/006 , C08F226/10 , C08L39/00
摘要： A method for residual monomer diminution by which a residual monomer is speedily removed from an N-vinyl compound polymer or the like without posing a problem such as an increase in ash content; and a process for producing an N-vinyl compound polymer solution or powder which has a regulated pH and is free from a decrease in pH with time.The method comprises adding an organic acid having a boiling point of 140° C. or higher at ordinary pressure to anaqueous solution of an N-vinyl compound polymer. The process comprises adding an organic base to an aqueous N-vinyl compound polymer solution having a pH lower than 7.0 to thereby neutralize the solution and regulate the pH thereof. Those operations are conducted in a reaction vessel in which a gaseous phase is regulated so as to have an oxygen concentration of 5.0% by volume or lower.
摘要翻译： 残留单体减少的方法通过其残留单体从N-乙烯基化合物聚合物等中快速除去而不会引起诸如灰分含量增加的问题; 以及具有调节pH并且随着时间而不降低pH的N-乙烯基化合物聚合物溶液或粉末的制备方法。 该方法包括在常压下将沸点为140℃或更高的有机酸加入到N-乙烯基化合物聚合物的水溶液中。 该方法包括向pH低于7.0的N-乙烯基化合物水溶液水溶液中加入有机碱，从而中和溶液并调节其pH。 这些操作在调节气相以使氧浓度为5.0体积％以下的反应容器中进行。
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公开(公告)号：US06617420B2
公开(公告)日：2003-09-09
申请号：US09920745
申请日：2001-08-03
申请人： Toshiaki Kuriyama , Yasuko Inui
发明人： Toshiaki Kuriyama , Yasuko Inui
IPC分类号： C08F2600
CPC分类号： C08F126/00 , C08F6/006 , C08F226/10 , C08L39/00
摘要： A method for residual monomer diminution by which a residual monomer is speedily removed from an N-vinyl compound polymer or the like without posing a problem such as an increase in ash content; and a process for producing an N-vinyl compound polymer solution or powder which has a regulated pH and is free from a decrease in pH with time. The method comprises adding an organic acid having a boiling point of 140° C. or higher at ordinary pressure to an aqueous solution of an N-vinyl compound polymer. The process comprises adding an organic base to an aqueous N-vinyl compound polymer solution having a pH lower than 7.0 to thereby neutralize the solution and regulate the pH thereof. Those operations are conducted in a reaction vessel in which a gaseous phase is regulated so as to have an oxygen concentration of 5.0% by volume or lower.
摘要翻译： 残留单体减少的方法通过其残留单体从N-乙烯基化合物聚合物等中快速除去而不会引起诸如灰分含量增加的问题; 以及具有调节pH并且随着时间而不降低pH的N-乙烯基化合物聚合物溶液或粉末的制备方法。 该方法包括在常压下将沸点为140℃以上的有机酸加入到N-乙烯基化合物聚合物的水溶液中。 该方法包括向pH低于7.0的N-乙烯基化合物水溶液水溶液中加入有机碱，从而中和溶液并调节其pH。 这些操作在调节气相以使氧浓度为5.0体积％以下的反应容器中进行。
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公开(公告)号：US20020022699A1
公开(公告)日：2002-02-21
申请号：US09920745
申请日：2001-08-03
发明人： Toshiaki Kuriyama , Yasuko Inui
IPC分类号： C08F122/38
CPC分类号： C08F126/00 , C08F6/006 , C08F226/10 , C08L39/00
摘要： A method for residual monomer diminution by which a residual monomer is speedily removed from an N-vinyl compound polymer or the like without posing a problem such as an increase in ash content; and a process for producing an N-vinyl compound polymer solution or powder which has a regulated pH and is free from a decrease in pH with time. The method comprises adding an organic acid having a boiling point of 140null C. or higher at ordinary pressure to an aqueous solution of an N-vinyl compound polymer. The process comprises adding an organic base to an aqueous N-vinyl compound polymer solution having a pH lower than 7.0 to thereby neutralize the solution and regulate the pH thereof. Those operations are conducted in a reaction vessel in which a gaseous phase is regulated so as to have an oxygen concentration of 5.0 % by volume or lower.
摘要翻译： 残留单体减少的方法通过其残留单体从N-乙烯基化合物聚合物等中快速除去而不会引起诸如灰分含量增加的问题; 以及具有调节pH并且随着时间而不降低pH的N-乙烯基化合物聚合物溶液或粉末的制备方法。 该方法包括在常压下将沸点为140℃以上的有机酸加入到N-乙烯基化合物聚合物的水溶液中。 该方法包括向pH低于7.0的N-乙烯基化合物水溶液水溶液中加入有机碱，从而中和溶液并调节其pH。 这些操作在调节气相以使氧浓度为5.0体积％以下的反应容器中进行。
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