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11. 发明申请

US20110034603A1 Polyacrylic acid (salt)-based water-absorbent resin and method for producing same 审中-公开
标题翻译：聚丙烯酸（盐）系吸水性树脂及其制造方法
公开(公告)号：US20110034603A1
公开(公告)日：2011-02-10
申请号：US12936823
申请日：2009-04-24
申请人： Shinichi Fujino , Eri Nagasawa , Kunihiko Ishizaki , Hiroto Kasuga
发明人： Shinichi Fujino , Eri Nagasawa , Kunihiko Ishizaki , Hiroto Kasuga
IPC分类号： C08L33/02 , C08F220/06 , C08K5/09
CPC分类号： C08F6/008 , A61F2013/530481 , A61L15/22 , A61L15/60 , C08F6/10 , C08F220/06 , C08J3/126 , C08J3/128 , C08J3/245 , C08J2333/02 , C08L33/02
摘要： In order to realize, while preventing gelatification of a monomer not yet to be polymerized, a water-absorbent resin which is more stable in color over time and has a significant enhancement in a problem concerning surface color and an excellent absorption property, a method for producing a polyacrylic acid-based water-absorbent resin includes: a preparation step in which a monomer is prepared from acrylic acid including hydroxyacetone in an amount not larger than 300 mass ppm; a polymerization step in which the monomer is polymerized so that a hydrogel is obtained; and a drying step in which the hydrogel is dried. Also, a method of the present invention for producing polyacrylic acid-based water-absorbent resin includes: a preparation step in which a monomer is prepared from acrylic acid; a polymerization step in which the monomer is polymerized in presence of phenol so that a hydrogel is obtained; and a drying step in which the hydrogel is dried.
摘要翻译：为了在防止尚未聚合的单体的凝胶化的同时，实现随着时间的推移，颜色更稳定并且显着提高了表面颜色和吸收性优异的问题的吸水性树脂，制备聚丙烯酸类吸水性树脂包括：制备步骤，其中单体由不大于300质量ppm的羟基丙酮的丙烯酸制备; 聚合步骤，其中单体聚合以获得水凝胶; 和干燥步骤，其中水凝胶被干燥。此外，本发明的聚丙烯酸类吸水性树脂的制造方法还包括：由丙烯酸制备单体的制备工序; 聚合步骤，其中单体在苯酚存在下聚合以获得水凝胶; 和干燥步骤，其中水凝胶被干燥。

12. 发明申请

US20060229370A1 Water-absorbent resin, hydropolymer, process for producing them, and uses of them 有权
公开(公告)号：US20060229370A1
公开(公告)日：2006-10-12
申请号：US11452223
申请日：2006-06-14
申请人： Yorimichi Dairoku , Yoshio Irie , Shinichi Fujino , Yasuhiro Fujita , Takashi Azumi , Kunihiko Ishizaki
发明人： Yorimichi Dairoku , Yoshio Irie , Shinichi Fujino , Yasuhiro Fujita , Takashi Azumi , Kunihiko Ishizaki
IPC分类号： C08J9/00
CPC分类号： C08F220/06 , A61L15/24 , C08F2/001 , C08F2/01 , C08F2/10 , C08F20/06 , C08F222/1006 , C08L33/02
摘要： The present invention provides a production process by which a water-absorbent resin of excellent quality can be obtained at a low cost by reasonable steps in aqueous solution polymerization. The process for producing a water-absorbent resin comprises the step of polymerizing an aqueous solution of water-absorbent resin-forming monomers including acrylic acid and/or its sodium salt as major components, wherein: (1) the aqueous solution has a monomer component concentration of not less than 45 weight %; (2) the polymerization is carried out while water is evaporated so that the ratio (concentration ratio) between a solid component concentration in a hydropolymer as formed by the polymerization and a solid component concentration in the aqueous monomer solution will not be less than 1.10; and (3) the solid component concentration in the hydropolymer as formed by the polymerization is not more than 80 weight %.

13. 发明授权

US07091253B2 Water-absorbent resin, hydropolymer, process for producing them, and uses of them 有权
公开(公告)号：US07091253B2
公开(公告)日：2006-08-15
申请号：US10942851
申请日：2004-09-17
申请人： Yorimichi Dairoku , Yoshio Irie , Shinichi Fujino , Yasuhiro Fujita , Takashi Azumi , Kunihiko Ishizaki
发明人： Yorimichi Dairoku , Yoshio Irie , Shinichi Fujino , Yasuhiro Fujita , Takashi Azumi , Kunihiko Ishizaki
IPC分类号： C08J9/00
CPC分类号： C08F220/06 , A61L15/24 , C08F2/001 , C08F2/01 , C08F2/10 , C08F20/06 , C08F222/1006 , C08L33/02
摘要： The present invention provides a production process by which a water-absorbent resin of excellent quality can be obtained at a low cost by reasonable steps in aqueous solution polymerization. The process for producing a water-absorbent resin comprises the step of polymerizing an aqueous solution of water-absorbent resin-forming monomers including acrylic acid and/or its sodium salt as major components, wherein: (1) the aqueous solution has a monomer component concentration of not less than 45 weight %; (2) the polymerization is carried out while water is evaporated so that the ratio (concentration ratio) between a solid component concentration in a hydropolymer as formed by the polymerization and a solid component concentration in the aqueous monomer solution will not be less than 1.10; and (3) the solid component concentration in the hydropolymer as formed by the polymerization is not more than 80 weight %.

14. 发明授权

US06576713B2 Water-absorbent resin powder and production process therefor 有权
标题翻译：吸水树脂粉及其制作方法
公开(公告)号：US06576713B2
公开(公告)日：2003-06-10
申请号：US09789735
申请日：2001-02-22
申请人： Kunihiko Ishizaki , Teruyuki Kanto , Nobuyuki Harada , Takumi Hatsuda , Shinichi Fujino
发明人： Kunihiko Ishizaki , Teruyuki Kanto , Nobuyuki Harada , Takumi Hatsuda , Shinichi Fujino
IPC分类号： C08F22062
CPC分类号： C08J3/12 , C08J3/122 , C08J2300/14 , Y10T428/2982
摘要： The present invention provides a production process for a water-absorbent resin powder which is excellent in particle diameter distribution and properties, wherein the production process not only inhibits adhesion and aggregation in the production steps, but also is excellent in energy efficiency, drying efficiency, and productivity. The production process for a water-absorbent resin powder comprises the steps of: polymerizing an aqueous monomer solution containing a crosslinking agent; heat-drying the resultant crosslinked hydrogel polymer; and pulverizing the resultant dry polymer; wherein: the dry polymer resultant from the heat-drying step is forcibly cooled before or during the pulverization step; and the water-absorbent resin powder has an average particle diameter of 200 to 600 &mgr;m after the pulverization step wherein the total ratio of particles having particle diameters of not larger than 150 &mgr;m and particles having particle diameters of not smaller than 850 &mgr;m in the water-absorbent resin powder is not more than 15 weight % of the water-absorbent resin powder.
摘要翻译：本发明提供一种吸水性树脂粉末的制造方法，其特征在于，粒径分布和性能优异，其制造方法不仅抑制了制造工序中的粘合和聚集，而且能量效率，干燥效率，和生产率。吸水性树脂粉末的制造方法包括以下步骤：使含有交联剂的单体水溶液聚合; 加热干燥所得的交联水凝胶聚合物; 并粉碎所得的干燥聚合物; 其中：由所述加热干燥步骤得到的干燥聚合物在粉碎步骤之前或阶段被强制冷却; 吸水性树脂粉末在粉碎工序中的平均粒径为200〜600μm，其中粒径不大于150μm的颗粒和颗粒直径不小于850μm的颗粒在水中的总比例 - 吸收性树脂粉末的吸水树脂粉末的15重量％以下。

15. 发明授权

US09518133B2 Hydrophilic polyacrylic acid (salt) resin and manufacturing method thereof 有权
标题翻译：亲水性聚丙烯酸（盐）树脂及其制造方法
公开(公告)号：US09518133B2
公开(公告)日：2016-12-13
申请号：US13148359
申请日：2010-02-08
申请人： Shinichi Fujino , Satoshi Matsumoto , Kunihiko Ishizaki
发明人： Shinichi Fujino , Satoshi Matsumoto , Kunihiko Ishizaki
IPC分类号： C08F20/02 , C08F20/06 , C08F2/44 , C08F220/06
CPC分类号： C08F2/44 , C08F220/06
摘要： The physical properties of a water-absorbing resin with low residual monomer content are improved or stabilized, without sacrifices in productivity, production cost, stability, etc. Provided is a water-absorbing resin with low residual monomer content and excellent whiteness, wherein a water-absorbing resin consumed in large quantities in disposable diapers, etc., is preferably a sustainable and renewable water-absorbing resin that does not require excessive purification of the acrylic acid, particularly acrylic acids derived from non-fossil sources, that is the starting material of the water-absorbing resin. Disclosed is a method of manufacturing a hydrophilic polyacrylic acid (salt) resin, which is a method of manufacturing a water-absorbing polyacrylic acid resin that comprises a step in which a monomer is prepared from acrylic acid, a step in which said monomer is polymerized, and a step in which the resulting hydrous gel is dried. The polymerization is performed such that the content of hydroxypropionic acid (salt) in the monomer is 2000 ppm or less and/or the content of saturated organic carboxylic acid in the monomer is 2% by mass or less, and at least a portion of the saturated organic carboxylic acid is volatilized during and after the drying step.
摘要翻译：具有低残留单体含量的吸水树脂的物理性能得到改善或稳定化，而不牺牲生产率，生产成本，稳定性等。提供了具有低残留单体含量和优异白度的吸水树脂，其中水在一次性尿布等中大量消耗的吸收树脂优选是可持续且可再生的吸水树脂，其不需要过度纯化丙烯酸，特别是源自非化石源的丙烯酸，即起始材料的吸水树脂。公开了一种制造亲水性聚丙烯酸（盐）树脂的方法，其是制备吸水性聚丙烯酸树脂的方法，其包括其中单体由丙烯酸制备的步骤，所述单体聚合的步骤，以及将所得含水凝胶干燥的步骤。进行聚合，使得单体中羟基丙酸（盐）的含量为2000ppm以下，和/或单体中的饱和有机羧酸的含量为2质量％以下，至少一部分饱和有机羧酸在干燥步骤期间和之后挥发。

16. 发明授权

US08648161B2 Polyacrylic acid (salt) -based water-absorbent resin and a method for producing it 有权
标题翻译：聚丙烯酸（盐）系吸水性树脂及其制造方法
公开(公告)号：US08648161B2
公开(公告)日：2014-02-11
申请号：US13148356
申请日：2010-02-08
申请人： Shinichi Fujino , Eri Nagasawa , Satoshi Matsumoto , Kunihiko Ishizaki
发明人： Shinichi Fujino , Eri Nagasawa , Satoshi Matsumoto , Kunihiko Ishizaki
IPC分类号： C08F220/06 , C08F118/02 , C08F4/44 , C08F4/06 , C08F120/02
CPC分类号： C08F2/44 , C08F220/06
摘要： The purpose of the present invention is to improve the water absorption of a water-absorbent resin without sacrificing the productivity, production cost, safety, and so on. Provided is a sustainable and renewable water-absorbent resin with excellent whiteness, which is suitable for mass consumption as disposal diapers or the like, and which can dispense with excessive purification of raw material acrylic acid. Also provided is a process for the production of a water-absorbent resin, which comprises: a step of preparing acrylic monomers; a step of polymerizing the monomers; and a step of drying the obtained aqueous gel, wherein the monomers at the time of polymerization contain at least 400 ppm of propionic acid.
摘要翻译：本发明的目的是提高吸水性树脂的吸水率，而不牺牲生产率，生产成本，安全性等。提供了一种可持续且可再生的吸水性树脂，其具有优异的白度，适用于作为处理尿布等的大量消费，并且可以省去原料丙烯酸的过度净化。还提供了一种制备吸水性树脂的方法，其包括：制备丙烯酸单体的步骤; 聚合单体的步骤; 以及干燥所得水凝胶的步骤，其中聚合时的单体含有至少400ppm的丙酸。

17. 发明申请

US20110306732A1 POLYACRYLIC ACID (SALT) -BASED WATER-ABSORBENT RESIN AND A METHOD FOR PRODUCING IT 有权
标题翻译：聚氨酯酸（盐） - 吸水树脂及其生产方法
公开(公告)号：US20110306732A1
公开(公告)日：2011-12-15
申请号：US13148356
申请日：2010-02-08
申请人： Shinichi Fujino , Eri Nagasawa , Satoshi Matsumoto , Kunihiko Ishizaki
发明人： Shinichi Fujino , Eri Nagasawa , Satoshi Matsumoto , Kunihiko Ishizaki
IPC分类号： C08F8/00 , C08F30/04
CPC分类号： C08F2/44 , C08F220/06
摘要： The purpose of the present invention is to improve the water absorption of a water-absorbent resin without sacrificing the productivity, production cost, safety, and so on. Provided is a sustainable and renewable water-absorbent resin with excellent whiteness, which is suitable for mass consumption as disposal diapers or the like, and which can dispense with excessive purification of raw material acrylic acid. Also provided is a process for the production of a water-absorbent resin, which comprises: a step of preparing acrylic monomers; a step of polymerizing the monomers; and a step of drying the obtained aqueous gel, wherein the monomers at the time of polymerization contain at least 400 ppm of propionic acid.
摘要翻译：本发明的目的是提高吸水性树脂的吸水率，而不牺牲生产率，生产成本，安全性等。提供了一种可持续且可再生的吸水性树脂，其具有优异的白度，适用于作为处理尿布等的大量消费，并且可以省去原料丙烯酸的过度净化。还提供了一种制备吸水性树脂的方法，其包括：制备丙烯酸单体的步骤; 聚合单体的步骤; 以及干燥所得水凝胶的步骤，其中聚合时的单体含有至少400ppm的丙酸。

18. 发明授权

US07741400B2 Water-absorbent resin, hydropolymer, process for producing them, and uses of them 有权
公开(公告)号：US07741400B2
公开(公告)日：2010-06-22
申请号：US11452223
申请日：2006-06-14
申请人： Yorimichi Dairoku , Yoshio Irie , Shinichi Fujino , Yasuhiro Fujita , Takashi Azumi , Kunihiko Ishizaki
发明人： Yorimichi Dairoku , Yoshio Irie , Shinichi Fujino , Yasuhiro Fujita , Takashi Azumi , Kunihiko Ishizaki
IPC分类号： C08K5/20
CPC分类号： C08F220/06 , A61L15/24 , C08F2/001 , C08F2/01 , C08F2/10 , C08F20/06 , C08F222/1006 , C08L33/02
摘要： The present invention provides a production process by which a water-absorbent resin of excellent quality can be obtained at a low cost by reasonable steps in aqueous solution polymerization. The process for producing a water-absorbent resin comprises the step of polymerizing an aqueous solution of water-absorbent resin-forming monomers including acrylic acid and/or its sodium salt as major components, wherein: (1) the aqueous solution has a monomer component concentration of not less than 45 weight %; (2) the polymerization is carried out while water is evaporated so that the ratio (concentration ratio) between a solid component concentration in a hydropolymer as formed by the polymerization and a solid component concentration in the aqueous monomer solution will not be less than 1.10; and (3) the solid component concentration in the hydropolymer as formed by the polymerization is not more than 80 weight %.

19. 发明授权

US06906159B2 Water-absorbent resin, hydropolymer, process for producing them, and uses of them 有权
标题翻译：吸水性树脂，氢化聚合物，制造方法及其用途
公开(公告)号：US06906159B2
公开(公告)日：2005-06-14
申请号：US09917642
申请日：2001-07-31
申请人： Yorimichi Dairoku , Yoshio Irie , Shinichi Fujino , Yasuhiro Fujita , Takashi Azumi , Kunihiko Ishizaki
发明人： Yorimichi Dairoku , Yoshio Irie , Shinichi Fujino , Yasuhiro Fujita , Takashi Azumi , Kunihiko Ishizaki
IPC分类号： A61L15/24 , C08F2/00 , C08F20/06 , C08F2/10
CPC分类号： C08F220/06 , A61L15/24 , C08F2/001 , C08F2/01 , C08F2/10 , C08F20/06 , C08F222/1006 , C08L33/02
摘要： The present invention provides a production process by which a water-absorbent resin of excellent quality can be obtained at a low cost by reasonable steps in aqueous solution polymerization. The process for producing a water-absorbent resin comprises the step of polymerizing an aqueous solution of water-absorbent resin-forming monomers including acrylic acid and/or its sodium salt as major components, wherein: (1) the aqueous solution has a monomer component concentration of not less than 45 weight %; (2) the polymerization is carried out while water is evaporated so that the ratio (concentration ratio) between a solid component concentration in a hydropolymer as formed by the polymerization and a solid component concentration in the aqueous monomer solution will not be less than 1.10; and (3) the solid component concentration in the hydropolymer as formed by the polymerization is not more than 80 weight %.
摘要翻译：本发明提供一种通过在水溶液聚合中合理的步骤以低成本获得优质品质的吸水性树脂的生产方法。吸水性树脂的制造方法包括使包含丙烯酸和/或其钠盐作为主要成分的吸水性树脂形成性单体的水溶液聚合的步骤，其中：（1）水溶液具有单体成分浓度不低于45重量％; （2）在蒸发水的同时进行聚合，使得通过聚合形成的氢化聚合物中的固体成分浓度与单体水溶液中的固体成分浓度之间的比例（浓度比）不小于1.10; （3）由聚合形成的氢化聚合物中的固体成分浓度为80重量％以下。

20. 发明申请

US20120010372A1 HYDROPHILIC POLYACRYLIC ACID (SALT) RESIN AND MANUFACTURING METHOD THEREOF 有权
标题翻译：水解聚丙烯酸（盐）树脂及其制造方法
公开(公告)号：US20120010372A1
公开(公告)日：2012-01-12
申请号：US13148359
申请日：2010-02-08
申请人： Shinichi Fujino , Satoshi Matsumoto , Kunihiko Ishizaki
发明人： Shinichi Fujino , Satoshi Matsumoto , Kunihiko Ishizaki
IPC分类号： C08F20/06 , C08F8/14 , C08F2/10
CPC分类号： C08F2/44 , C08F220/06
摘要： The physical properties of a water-absorbing resin with low residual monomer content are improved or stabilized, without sacrifices in productivity, production cost, stability, etc. Provided is a water-absorbing resin with low residual monomer content and excellent whiteness, wherein a water-absorbing resin consumed in large quantities in disposable diapers, etc., is preferably a sustainable and renewable water-absorbing resin that does not require excessive purification of the acrylic acid, particularly acrylic acids derived from non-fossil sources, that is the starting material of the water-absorbing resin. Disclosed is a method of manufacturing a hydrophilic polyacrylic acid (salt) resin, which is a method of manufacturing a water-absorbing polyacrylic acid resin that comprises a step in which a monomer is prepared from acrylic acid, a step in which said monomer is polymerized, and a step in which the resulting hydrous gel is dried. The polymerization is performed such that the content of hydroxypropionic acid (salt) in the monomer is 2000 ppm or less and/or the content of saturated organic carboxylic acid in the monomer is 2% by mass or less, and at least a portion of the saturated organic carboxylic acid is volatilized during and after the drying step.
摘要翻译：具有低残留单体含量的吸水树脂的物理性能得到改善或稳定化，而不牺牲生产率，生产成本，稳定性等。提供了具有低残留单体含量和优异白度的吸水树脂，其中水在一次性尿布等中大量消耗的吸收树脂优选是可持续且可再生的吸水树脂，其不需要过度纯化丙烯酸，特别是源自非化石源的丙烯酸，即起始材料的吸水树脂。公开了一种制造亲水性聚丙烯酸（盐）树脂的方法，其是制备吸水性聚丙烯酸树脂的方法，其包括其中单体由丙烯酸制备的步骤，所述单体聚合的步骤，以及将所得含水凝胶干燥的步骤。进行聚合，使得单体中羟基丙酸（盐）的含量为2000ppm以下，和/或单体中的饱和有机羧酸的含量为2质量％以下，至少一部分饱和有机羧酸在干燥步骤期间和之后挥发。

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