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81. 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。

82. 发明申请

US20090318885A1 Particulate Water Absorbing Agent Including Polyacrylic Acid (Polyacrylate) Based Water Absorbing Resin as a Principal Component, Method for Production Thereof, Water-Absorbent Core and Absorbing Article in Which the Particulate Water Absorbing Agent is Used 有权
标题翻译：包含聚丙烯酸（聚丙烯酸酯）基吸水树脂作为主要成分的颗粒吸水剂，其制造方法，吸水芯和吸收性物质，其中使用颗粒吸水剂
公开(公告)号：US20090318885A1
公开(公告)日：2009-12-24
申请号：US11911169
申请日：2006-04-11
申请人： Yorimichi Dairoku , Hirotama Fujimaru , Kunihiko Ishizaki
发明人： Yorimichi Dairoku , Hirotama Fujimaru , Kunihiko Ishizaki
IPC分类号： A61F13/53 , C08F20/06 , B01J20/26 , C08F263/02
CPC分类号： A61L15/60 , A61L15/24 , B01J2220/68 , C08L33/02
摘要： As a characteristic that had not been known conventionally at all, “permeability potential under pressure (PPUP)” of a particulate water absorbing agent is regulated, and further, “range of particle size distribution” and “coloring” are concomitantly regulated. The present invention is directed to a particulate water absorbing agent having the following (a) to (c): (a) permeability potential under pressure (PPUP) being 50 to 100%; (b) yellowness index (YI) being 0 to 10, and rate of change of yellowness index (ΔYI) being 100 to 150% following a coloring acceleration test for 14 days at 70±1° C. and the relative humidity of 95±1%; and (c) particles of smaller than 150 μm specified by standard sieve classification accounting for 0 to 5% by weight, weight average particle diameter (D50) being 200 to 550 μm, and logarithmic standard deviation (σζ) of particle size distribution being 0.20 to 0.40.
摘要翻译：作为传统上已知的特征，调节了颗粒状吸水剂的“压力下的渗透势（PPUP）”，并且进一步调节“粒度分布范围”和“着色”。本发明涉及具有以下（a）至（c）的颗粒状吸水剂：（a）压力下的渗透势（PPUP）为50〜100％（b）在70±1℃下，着色加速试验14天，黄色指数（YI）为0〜10，黄色指数变化率（ΔYI）为100〜150％，相对湿度为95± 1％; 和（c）通过标准筛分类而规定的小于150μm的颗粒，其重量平均粒径（D50）为0-5重量％，平均粒径（D50）为200-550μm，粒度分布的对数标准偏差（sigmazeta）为0.20 至0.40。

83. 发明申请

US20070232760A1 METHOD OF PRODUCING POLYACRYLIC ACID (SALT) WATER-ABSORBENT RESIN 有权
标题翻译：生产聚丙烯酸（盐）吸水树脂的方法
公开(公告)号：US20070232760A1
公开(公告)日：2007-10-04
申请号：US11693355
申请日：2007-03-29
申请人： Hirotama Fujimaru , Eri Goto , Kunihiko Ishizaki , Atsushi Motoyama
发明人： Hirotama Fujimaru , Eri Goto , Kunihiko Ishizaki , Atsushi Motoyama
IPC分类号： C08F120/02
CPC分类号： C08F220/06 , C08F220/26 , C08F222/1006
摘要： A method of producing a water-absorbent resin of the present invention reduces amounts of a residual cross-linking agent and a residual surfactant, achieves high productivity, and improves physical properties of the resultant water-absorbent, such as absorption capacity, extractable polymer content, powder friction, and gel crushability. The method includes the steps of: polymerizing an aqueous monomer solution containing as a major component an acrylic acid monomer in the presence of a cross-linking agent; and drying the resultant polymer by heating, in which the cross-linking agent is a multifunctional (meth)acrylate cross-linking agent having polyethylene glycol structural units including a total of 6 to 200 ethylene oxide repeating units, and the aqueous monomer solution includes a mono(meth)acrylate compound having polyethylene glycol structural units in an amount of 0.1 to 30% by weight relative to an amount of the multifunctional (meth)acrylate cross-linking agent.
摘要翻译：本发明的吸水性树脂的制造方法可以减少残留交联剂和残留的表面活性剂的量，实现高生产率，提高所得吸水剂的物理性能，如吸收能力，可提取聚合物含量，粉末摩擦和凝胶粉碎性。该方法包括以下步骤：在交联剂存在下聚合含有作为主要组分的丙烯酸单体的单体水溶液; 并通过加热干燥所得聚合物，其中交联剂是具有总共6至200个环氧乙烷重复单元的聚乙二醇结构单元的多官能（甲基）丙烯酸酯交联剂，单体水溶液包括单（甲基）丙烯酸酯化合物，其相对于多官能（甲基）丙烯酸酯交联剂的量为0.1〜30重量％的聚乙二醇结构单元。

84. 发明申请

US20070149691A1 Process for continuous production of water-absorbent resin product 审中-公开
公开(公告)号：US20070149691A1
公开(公告)日：2007-06-28
申请号：US11708342
申请日：2007-02-21
申请人： Kunihiko Ishizaki , Katsuhiro Kajikawa
发明人： Kunihiko Ishizaki , Katsuhiro Kajikawa
IPC分类号： C08G18/42
CPC分类号： C08J3/005 , C08J3/12 , C08J3/245 , C08J2300/14 , Y10T428/2982
摘要： There is disclosed a process for continuous production of a water-absorbent resin product by which the water-absorbent resin product having high properties can continuously be produced easily and inexpensively with stable constant quality. In addition, there is disclosed a water-absorbent resin product having high properties and being stable in quality. The process comprises the following steps of: (A) measuring a water-absorbent resin by its predetermined property and/or its predetermined component content, wherein the water-absorbent resin comes being continuously produced via a classification step and/or a surface-modifying step; (B) separating a predetermined amount of water-absorbent resin (a) from the water-absorbent resin that comes being continuously produced, wherein the water-absorbent resin (a) is a water-absorbent resin which displays not less than a definite value and/or a water-absorbent resin which displays not more than a definite value as to the predetermined property and/or the predetermined component content in accordance with results of the aforementioned measurement; and (C) mixing at least a portion of the aforementioned separated predetermined amount of water-absorbent resin (a) into a water-absorbent resin that comes being continuously produced via a classification step and/or a surface-modifying step on the same or another production line.

85. 发明申请

US20070101644A1 Particulate water retaining material for cultivating plant having water absorbent resin as main component 有权
标题翻译：用于培养具有吸水性树脂作为主要成分的植物的颗粒保水材料
公开(公告)号：US20070101644A1
公开(公告)日：2007-05-10
申请号：US10581343
申请日：2004-12-06
申请人： Hirotama Fujimaru , Yorimichi Dairoku , Kunihiko Ishizaki , Yoshifumi Adachi , Nobuyuki Harada
发明人： Hirotama Fujimaru , Yorimichi Dairoku , Kunihiko Ishizaki , Yoshifumi Adachi , Nobuyuki Harada
IPC分类号： A01G7/00
CPC分类号： A01G24/00 , A01G24/35
摘要： A particulate water retaining material for cultivating plant comprising (A) a carboxyl group-containing water-insoluble water absorbent resin and (B) a polyvalent metal compound, by having the compound (B) deposited on the the rerin (A), it is made possible to possess an outstanding water absorbing property without impairing the growth of a plant.
摘要翻译：含有（A）含羧基的水不溶性吸水性树脂和（B）多价金属化合物的栽培植物用颗粒状保水材料，通过使化合物（B）沉积在rerin（A）上，是使得具有优异的吸水性而不损害植物的生长成为可能。

86. 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 %.

87. 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 %.

88. 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。

89. 发明授权

US06562879B1 Water-absorbent resin powder and its production process and use 有权
标题翻译：吸水树脂粉及其生产工艺及用途
公开(公告)号：US06562879B1
公开(公告)日：2003-05-13
申请号：US09502823
申请日：2000-02-11
申请人： Takumi Hatsuda , Hiroyuki Ikeuchi , Koji Miyake , Yoshio Irie , Kunihiko Ishizaki
发明人： Takumi Hatsuda , Hiroyuki Ikeuchi , Koji Miyake , Yoshio Irie , Kunihiko Ishizaki
IPC分类号： C08J916
CPC分类号： C08J3/12 , C08J3/122 , C08J2300/14
摘要： The present invention provides a water-absorbent resin powder and its production process and use, wherein the water-absorbent resin powder has high liquid permeability and high water absorbency. The production process for a water-absorbent resin powder, according to the present invention, comprises the step of obtaining water-absorbent crosslinked polymer particles by an aqueous solution polymerization step, and grinding the resultant crosslinked polymer particles until the bulk density thereof increases to not lower than 0.72 (g/ml). The water-absorbent resin powder is characterized by being arbitrarily pulverized and having a bulk density of not lower than 0.74 (g/ml) and a water absorption capacity of not lower than 20 (g/g) for 0.9 weight % physiological saline under a load of 0.7 psi (4.83 kPa). In addition, the absorbent structure comprises the above water-absorbent resin powder and a fibrous material. The absorbent article comprises an absorbent layer including the above absorbent structure.
摘要翻译：本发明提供吸水性树脂粉末及其制造方法和用途，其中吸水性树脂粉末具有高透液性和高吸水性。根据本发明的吸水性树脂粉末的制造方法包括通过水溶液聚合步骤获得吸水性交联聚合物颗粒的步骤，并研磨所得交联聚合物颗粒，直到其堆积密度增加至不低于0.72（g / ml）。吸水性树脂粉末的特征在于任意粉碎，堆积密度不低于0.74（g / ml），对于0.9重量％生理盐水的吸水能力不低于20（g / g）负载0.7 psi（4.83 kPa）。此外，吸收性结构体包含上述吸水性树脂粉末和纤维材料。吸收性物品包括包含上述吸收结构的吸收层。

90. 发明授权

US06444744B1 Hydrophilic resin, absorbent article, and acrylic acid for polymerization 有权
标题翻译：亲水性树脂，吸收性物品和丙烯酸进行聚合
公开(公告)号：US06444744B1
公开(公告)日：2002-09-03
申请号：US09258503
申请日：1999-02-27
申请人： Hirotama Fujimaru , Kunihiko Ishizaki , Nobuyuki Harada , Sei Nakahara
发明人： Hirotama Fujimaru , Kunihiko Ishizaki , Nobuyuki Harada , Sei Nakahara
IPC分类号： C08F2006
CPC分类号： C08F20/06 , A61L15/24 , A61L15/60 , C08L33/02
摘要： The invention provides a hydrophilic resin and an absorbent article, both of which display still less coloring and discoloring when preserved for a long time. The hydrophilic resin is any one of: 1) a hydrophilic resin, obtained by a process including the step of polymerizing a monomer component including a major proportion of either one or both of acrylic acid and its salt which merely have a content of at most 0.20 ppm in total of hydroquinone and benzoquinone; 2) a hydrophilic resin, comprising a major proportion of an acrylic polymer and a minor proportion of either one or both of hydroquinone and benzoquinone, with the hydrophilic resin further comprising a quinhydronation inhibitor of 10˜1,000,000 times the total weight of hydroquinone and benzoquinone; 3) a hydrophilic resin, comprising a major proportion of an acrylic polymer and merely having a coloring degree (YI) of at most 20 after being left under conditions of the open system, 70° C., 65% RH for 1 week; and 4) a hydrophilic resin, which is a water-absorbent resin and is surface-crosslinked or surface-impregnated with a polyhydric alcohol and displays pH of 5.5 or less in a physiological salt solution and has an absorption capacity of 20 g/g or more for a physiological salt solution under a load of 50 g/cm2. In addition, the absorbent article comprises the above hydrophilic resin.
摘要翻译：本发明提供一种亲水性树脂和吸收性物品，两者在长期保存时都显示出较少的着色和变色。亲水性树脂是以下中的任何一种：1）亲水性树脂，其通过包括以下步骤的方法获得，所述方法包括使仅含有至多0.20的含量的丙烯酸及其盐中的一种或两种以上的主要部分对苯二酚和苯醌总共ppm; 2）亲水性树脂，其中主要部分为丙烯酸类聚合物和少量氢醌和苯醌中的一种或两种，亲水性树脂还含有氢醌和苯醌总重量的10〜1,000,000倍的醌氢醌抑制剂; 3）亲水性树脂，其包含主要部分的丙烯酸类聚合物，并且仅在开放系统的条件下，70℃，65％RH下仅具有至多20的着色度（YI）1周; 和4）作为吸水性树脂的表面交联或表面浸渍多元醇的亲水性树脂，在生理盐溶液中显示出pH5.5以下的吸收能力，吸收容量为20g / g，更多的是在50g / cm 2的负荷下的生理盐溶液。另外，吸收性物品包含上述亲水性树脂。

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