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1. 发明授权

US06486281B1 Process for preparing high-purity vinylpyrrolidone polymer 失效
标题翻译：制备高纯度乙烯基吡咯烷酮聚合物的方法
公开(公告)号：US06486281B1
公开(公告)日：2002-11-26
申请号：US09914267
申请日：2001-08-24
申请人： Akira Kitada , Keiichi Fujise , Itsuko Hamaguchi
发明人： Akira Kitada , Keiichi Fujise , Itsuko Hamaguchi
IPC分类号： C08F2608
CPC分类号： C08F26/10 , C08F6/02 , C08L39/06
摘要： A process for preparing a high purity vinylpyrrolidone polymer which dissolves clearly in an organic solvent can be provided. The process for preparing a high purity vinylpyrrolidone polymer, wherein vinylpyrrolidone is polymerized by using a redox initiator comprising an organic peroxide and a sulfite, and thereafter the product is contacted with an anion exchange resin to be purified.
摘要翻译：可以提供一种制备清楚地溶解在有机溶剂中的高纯度乙烯基吡咯烷酮聚合物的方法。制备高纯度乙烯基吡咯烷酮聚合物的方法，其中使用包含有机过氧化物和亚硫酸盐的氧化还原引发剂使乙烯基吡咯烷酮聚合，然后将产物与待纯化的阴离子交换树脂接触。

2. 发明授权

US06465592B1 Process for preparing vinylpyrrolidone polymer 失效
标题翻译：制备乙烯基吡咯烷酮聚合物的方法
公开(公告)号：US06465592B1
公开(公告)日：2002-10-15
申请号：US09890763
申请日：2001-08-03
申请人： Akira Kitada , Keiichi Fujise , Itsuko Hamaguchi
发明人： Akira Kitada , Keiichi Fujise , Itsuko Hamaguchi
IPC分类号： C08F2608
CPC分类号： C08F16/10 , C08F26/10 , C08F226/10
摘要： A vinylpyrrolidone polymer which is little colored, gives off a bad smell little, and contains extremely little impurities is provided. The polymerization is performed by adding a water-soluble organic peroxide and a sulfite to a vinylpyrrolidone aqueous solution.
摘要翻译：一种少许着色的乙烯基吡咯烷酮聚合物，几乎不发出臭味，并且含有极少的杂质。通过向乙烯基吡咯烷酮水溶液中加入水溶性有机过氧化物和亚硫酸盐来进行聚合。

3. 发明申请

US20080033081A1 Vinylpyrrolidone-based polymer composition 有权
标题翻译：基于乙烯基吡咯烷酮的聚合物组合物
公开(公告)号：US20080033081A1
公开(公告)日：2008-02-07
申请号：US11888113
申请日：2007-07-31
申请人： Keiichi Fujise , Itsuko Hamaguchi , Akio Naka , Daijyo Tomihisa
发明人： Keiichi Fujise , Itsuko Hamaguchi , Akio Naka , Daijyo Tomihisa
IPC分类号： C08F26/10 , C08K5/3415
CPC分类号： C08K5/31 , C08K5/3415 , C08L39/06
摘要： Disclosed is a vinylpyrrolidone-based polymer composition which has improved storage stability and of which the reduction in the molecular weight (K value) under shear stress is small. The composition comprises a vinylpyrrolidone-based polymer and contains from 1 to 10000 ppm of at least one compound selected from a group consisting of biguanides and further contains from 1000 to 30000 ppm of 2-pyrrolidone and from 1 to 5000 ppm of ammonia.
摘要翻译：公开了一种具有改善的储存稳定性并且其剪切应力下分子量（K值）降低小的乙烯基吡咯烷酮基聚合物组合物。该组合物包含基于乙烯基吡咯烷酮的聚合物，并且含有1至10000ppm的至少一种选自双胍的化合物，并且还包含1000至30000ppm的2-吡咯烷酮和1至5000ppm的氨。

4. 发明授权

US07700674B2 Vinylpyrrolidone-based polymer composition 有权
标题翻译：基于乙烯基吡咯烷酮的聚合物组合物
公开(公告)号：US07700674B2
公开(公告)日：2010-04-20
申请号：US11888113
申请日：2007-07-31
申请人： Keiichi Fujise , Itsuko Hamaguchi , Akio Naka , Daijyo Tomihisa
发明人： Keiichi Fujise , Itsuko Hamaguchi , Akio Naka , Daijyo Tomihisa
IPC分类号： C08F26/10
CPC分类号： C08K5/31 , C08K5/3415 , C08L39/06
摘要： Disclosed is a vinylpyrrolidone-based polymer composition which has improved storage stability and of which the reduction in the molecular weight (K value) under shear stress is small. The composition comprises a vinylpyrrolidone-based polymer and contains from 1 to 10000 ppm of at least one compound selected from a group consisting of biguanides and further contains from 1000 to 30000 ppm of 2-pyrrolidone and from 1 to 5000 ppm of ammonia.
摘要翻译：公开了一种具有改善的储存稳定性并且其剪切应力下分子量（K值）降低小的乙烯基吡咯烷酮基聚合物组合物。该组合物包含基于乙烯基吡咯烷酮的聚合物，并且含有1至10000ppm的至少一种选自双胍的化合物，并且还包含1000至30000ppm的2-吡咯烷酮和1至5000ppm的氨。

5. 发明申请

US20080153988A1 Powder of a Vinylpyrrolidone Polymer and a Process for Production Thereof 有权
标题翻译：乙烯基吡咯烷酮聚合物的粉末及其制备方法
公开(公告)号：US20080153988A1
公开(公告)日：2008-06-26
申请号：US11666883
申请日：2005-11-02
申请人： Kazuhiro Okamura , Norihiro Wakao , Keiji Watanabe , Keiichi Fujise
发明人： Kazuhiro Okamura , Norihiro Wakao , Keiji Watanabe , Keiichi Fujise
IPC分类号： C08L25/02
CPC分类号： C08F226/10 , C08J3/12 , C08J2339/00 , C09D139/06 , C09J139/06
摘要： The present invention is a powder of a vinylpyrrolidone polymer having a K value of smaller than 50, characterized in that a content of particles having a particle diameter of 106 μm or smaller is 10% by mass or less and a content of particles having a particle diameter of greater than 1,000 μm is 5% by mass or lower. A process for production of a powder of a vinylpyrrolidone polymer according to the present invention is characterized in that a vinylpyrrolidone polymer having a K value of smaller than 50 is formed into a solution having a concentration from 30% to 70% by mass, and the solution is dried by using a hot surface adhesion-type dryer, followed by pulverization so that a content of particles having a particle diameter of 106 μm or smaller is 10% by mass or lower and a content of particles having a particle diameter of greater than 1,000 μm is 5% by mass or lower.Thus, there is provided a powder of a vinylpyrrolidone polymer, which has excellent solubility in spite of having a low K value determined by a Fikentscher method and can be made into solution with favorable handleability without dust rising, and a process for production of the same.
摘要翻译：本发明是K值小于50的乙烯基吡咯烷酮聚合物的粉末，其特征在于粒径为106μm以下的粒子的含量为10质量％以下，粒子的粒子含量为大于1000μm的直径为5质量％以下。本发明的乙烯基吡咯烷酮聚合物粉末的制造方法的特征在于，将K值小于50的乙烯基吡咯烷酮聚合物形成浓度为30〜70质量％的溶液，溶液通过使用热表面粘附型干燥器进行干燥，然后粉碎，使得粒径为106μm以下的粒子的含量为10质量％以下，粒径为 1,000μm为5质量％以下。因此，提供了一种乙烯基吡咯烷酮聚合物的粉末，尽管具有通过Fikentscher方法测定的低K值而具有优异的溶解性，并且可以制成具有良好可操作性而没有粉尘升高的溶液及其制备方法。

6. 发明授权

US07910672B2 Powder of a vinylpyrrolidone polymer and a process for production thereof 有权
标题翻译：乙烯基吡咯烷酮聚合物的粉末及其制备方法
公开(公告)号：US07910672B2
公开(公告)日：2011-03-22
申请号：US11666883
申请日：2005-11-02
申请人： Kazuhiro Okamura , Norihiro Wakao , Keiji Watanabe , Keiichi Fujise
发明人： Kazuhiro Okamura , Norihiro Wakao , Keiji Watanabe , Keiichi Fujise
IPC分类号： C08F26/10
CPC分类号： C08F226/10 , C08J3/12 , C08J2339/00 , C09D139/06 , C09J139/06
摘要： The present invention is a powder of a vinylpyrrolidone polymer having a K value of smaller than 50, characterized in that a content of particles having a particle diameter of 106 μm or smaller is 10% by mass or less and a content of particles having a particle diameter of greater than 1,000 μm is 5% by mass or lower. A process for production of a powder of a vinylpyrrolidone polymer according to the present invention is characterized in that a vinylpyrrolidone polymer having a K value of smaller than 50 is formed into a solution having a concentration from 30% to 70% by mass, and the solution is dried by using a hot surface adhesion-type dryer, followed by pulverization so that a content of particles having a particle diameter of 106 μm or smaller is 10% by mass or lower and a content of particles having a particle diameter of greater than 1,000 μm is 5% by mass or lower.Thus, there is provided a powder of a vinylpyrrolidone polymer, which has excellent solubility in spite of having a low K value determined by a Fikentscher method and can be made into solution with favorable handleability without dust rising, and a process for production of the same.
摘要翻译：本发明是K值小于50的乙烯基吡咯烷酮聚合物的粉末，其特征在于，粒径为10μm以下的粒子的含量为10质量％以下，具有粒子的粒子的含量大于1000μm的直径为5质量％以下。本发明的乙烯基吡咯烷酮聚合物粉末的制造方法的特征在于，将K值小于50的乙烯基吡咯烷酮聚合物形成浓度为30〜70质量％的溶液，溶液通过使用热表面粘附型干燥器进行干燥，然后粉碎，使得粒径为10μm以下的颗粒的含量为10质量％以下，粒径为 1,000μm为5质量％以下。因此，提供了一种乙烯基吡咯烷酮聚合物的粉末，尽管具有通过Fikentscher方法测定的低K值而具有优异的溶解性，并且可以制成具有良好可操作性而没有粉尘升高的溶液及其制备方法。

7. 发明授权

US06829843B2 Process for preparing vinylpyrrolidone polymer powder 失效
标题翻译：制备乙烯基吡咯烷酮聚合物粉末的方法
公开(公告)号：US06829843B2
公开(公告)日：2004-12-14
申请号：US10754862
申请日：2004-01-08
申请人： Keiichi Fujise
发明人： Keiichi Fujise
IPC分类号： F26B312
CPC分类号： C08J3/122 , C08F6/12 , C08J2339/06 , C08L39/06
摘要： The present invention provides a process for preparing vinylpyrrolidone polymer powder, which has high bulk density and favorable powder flowability and can be handled with ease. Specifically, the present invention relates to a process for preparing vinylpyrrolidone polymer powder, which comprises spraying an aqueous solution of a vinylpyrrolidone polymer into a drying tower using a disc atomizer and then drying.
摘要翻译：本发明提供一种制备乙烯基吡咯烷酮聚合物粉末的方法，其具有高的堆积密度和良好的粉末流动性并且可以容易地处理。具体而言，本发明涉及一种制备乙烯基吡咯烷酮聚合物粉末的方法，其包括使用盘式雾化器将乙烯基吡咯烷酮聚合物的水溶液喷雾到干燥塔中，然后干燥。

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