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公开(公告)号：US08188163B2
公开(公告)日：2012-05-29
申请号：US12675364
申请日：2008-08-27
申请人： Makoto Matsumoto , Toshihiro Takaai , Yorimichi Dairoku , Shinichi Fujino , Satoshi Matsumoto , Seiji Kato
发明人： Makoto Matsumoto , Toshihiro Takaai , Yorimichi Dairoku , Shinichi Fujino , Satoshi Matsumoto , Seiji Kato
IPC分类号： C09B67/00
摘要： A water absorbent resin is dried in a continuous fluidized bed having a heat transfer tube and at least two drying rooms. Pulverization is performed between a first drying room at not less than 80° C. to not more than 200° C. and a second or subsequent room at not less than 100° C. to not more than 220° C. A method for producing a water absorbent resin includes: (1) polymerizing a monomer aqueous solution; (2) drying a hydrogel polymer of step (1); (3) performing particle size control of the dry polymer of the step (2); (5) surface crosslinking the water absorbent resin powder of step (3), and step (4) of performing a second heat drying on the water absorbent resin powder of step (3), preceding step (5). The water absorbent resin has a moisture content of 0 wt % to 3 wt % before the step (5).
摘要翻译： 在具有传热管和至少两个干燥室的连续流化床中干燥吸水性树脂。 在不低于80℃至不超过200℃的第一干燥室和不低于100℃至不超过220℃的第二或后续室之间进行粉碎。一种生产方法 吸水性树脂包括：（1）聚合单体水溶液; （2）干燥步骤（1）的水凝胶聚合物; （3）对步骤（2）的干燥聚合物进行粒度控制; （5）在步骤（5）之前，将步骤（3）的吸水性树脂粉末与步骤（3）的吸水性树脂粉末进行第二次加热干燥的步骤（4）进行表面交联。 在步骤（5）之前，吸水性树脂的水分含量为0重量％〜3重量％。
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公开(公告)号：US20120016084A1
公开(公告)日：2012-01-19
申请号：US13258645
申请日：2010-03-31
CPC分类号： C08J3/12 , B01J20/267 , B01J2220/68 , C08F20/06 , C08F220/06 , C08J3/245 , C08J2333/02
摘要： A production of a water-absorbent resin by which a particle diameter of the water-absorbent resin can be controlled simply and conveniently, and a content of fine powder can be decreased, without necessity of change of raw materials or expensive facility investment is to be provided. The method is a continuous production method of a polyacrylic acid (salt)-based water-absorbent resin, comprising a polymerization step of an aqueous solution containing acrylic acid (salt), a drying step of the resultant hydrogel-like polymer, a pulverization step of the dried substance, a classification step of the pulverized substance, and optionally a surface cross-linking step of the classified substance, wherein (a) the drying step and the pulverization step are connected via a storage step and a transportation step; and (b) a time of holding the dried substance from a time of completing the drying step to a time of starting the pulverization step is set at 3 minutes or longer.
摘要翻译： 可以简单方便地制造吸水性树脂的粒径，并且可以减少细粉的含量，而不需要改变原料或昂贵的设备投资。 提供。 该方法是以聚丙烯酸（盐）为基础的吸水性树脂的连续制备方法，其包括含有丙烯酸（盐）的水溶液的聚合步骤，所得水凝胶状聚合物的干燥步骤，粉碎步骤 干燥物质的分级步骤，以及任选的分级物质的表面交联步骤，其中（a）干燥步骤和粉碎步骤通过储存步骤和运输步骤连接; 和（b）从完成干燥步骤的时间到开始粉碎步骤的时间将干燥物质的时间设定为3分钟以上。
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公开(公告)号：US20100249320A1
公开(公告)日：2010-09-30
申请号：US12675364
申请日：2008-08-27
申请人： Makoto Matsumoto , Toshihiro Takaai , Yorimichi Dairoku , Shinichi Fujino , Satoshi Matsumoto , Seiji Kato
发明人： Makoto Matsumoto , Toshihiro Takaai , Yorimichi Dairoku , Shinichi Fujino , Satoshi Matsumoto , Seiji Kato
摘要： Drying is performed in a continuous fluidized bed having at least two drying rooms. Drying is performed after pulverization is performed between drying in a first drying room and drying in a second or subsequent room. Drying is performed in a continuous fluidized bed whose fluidized bed contains a heat transfer tube. The second or subsequent drying room has a higher drying temperature than the first drying room. Drying is performed with the drying temperature of the first drying room falling within a range of not less than 80° C. to not more than 200° C. and with the drying temperature of the second or subsequent drying room falling within a range of not less than 100° C. to not more than 220° C. Further, a method for producing a water absorbent resin includes: a sequence of the steps of: (1) polymerizing a monomer aqueous solution; (2) drying a hydrogel polymer obtained in the step (1); (3) performing particle size control by either pulverizing or pulverizing and classifying a dry polymer obtained in the step (2); and (5) performing surface crosslinking on water absorbent resin powder whose particle size has been controlled in the step (3), the method further including the step (4) of performing second heat drying on the water absorbent resin powder whose particle size has been controlled in the step (3), the step (4) preceding the step (5). Further, the water absorbent resin has a moisture content (defined by a loss on drying performed for three hours at 180° C.) of 0 wt % to 3 wt % before it is supplied to the step (5). (This makes it possible to provide a method for producing a water absorbent resin which method makes it possible to obtain a particulate water absorbent resin of excellent properties at low cost with high productivity.
摘要翻译： 在具有至少两个干燥室的连续流化床中进行干燥。 在第一干燥室中干燥之后进行粉碎并在第二或随后的室中进行干燥之后进行干燥。 干燥在其流化床含有传热管的连续流化床中进行。 第二干燥室或干燥室的干燥温度比第一干燥室高。 在第一干燥室的干燥温度为80℃以上且200℃以下的干燥温度下进行干燥，第二干燥室的干燥温度落在不干燥范围内 低于100℃至不超过220℃。此外，吸水性树脂的制造方法包括以下工序：（1）使单体水溶液聚合; （2）干燥步骤（1）中获得的水凝胶聚合物; （3）通过对步骤（2）中获得的干燥聚合物进行粉碎或粉碎和分级来进行粒度控制; 和（5）在步骤（3）中对其粒径进行了控制的吸水性树脂粉末进行表面交联，该方法还包括步骤（4），其在粒径已经达到的吸水性树脂粉末上进行第二加热干燥 在步骤（3），在步骤（5）之前的步骤（4）中控制。 此外，吸水性树脂在供给步骤（5）之前具有0重量％至3重量％的含水量（在180℃下进行干燥3小时的损失限定）。 （这使得可以提供一种生产吸水性树脂的方法，该方法可以以低成本，高生产率获得具有优异性能的颗粒状吸水性树脂。
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公开(公告)号：US09175143B2
公开(公告)日：2015-11-03
申请号：US13258645
申请日：2010-03-31
IPC分类号： C08F20/06 , C08J3/12 , C08J3/24 , C08F220/06
CPC分类号： C08J3/12 , B01J20/267 , B01J2220/68 , C08F20/06 , C08F220/06 , C08J3/245 , C08J2333/02
摘要： A production of a water-absorbent resin by which a particle diameter of the water-absorbent resin can be controlled simply and conveniently, and a content of fine powder can be decreased, without necessity of change of raw materials or expensive facility investment is to be provided. The method is a continuous production method of a polyacrylic acid (salt)-based water-absorbent resin, comprising a polymerization step of an aqueous solution containing acrylic acid (salt), a drying step of the resultant hydrogel-like polymer, a pulverization step of the dried substance, a classification step of the pulverized substance, and optionally a surface cross-linking step of the classified substance, wherein (a) the drying step and the pulverization step are connected via a storage step and a transportation step; and (b) a time of holding the dried substance from a time of completing the drying step to a time of starting the pulverization step is set at 3 minutes or longer.
摘要翻译： 可以简单方便地制造吸水性树脂的粒径，并且可以减少细粉的含量，而不需要改变原料或昂贵的设备投资。 提供。 该方法是以聚丙烯酸（盐）为基础的吸水性树脂的连续制备方法，其包括含有丙烯酸（盐）的水溶液的聚合步骤，所得水凝胶状聚合物的干燥步骤，粉碎步骤 干燥物质的分级步骤，以及任选的分级物质的表面交联步骤，其中（a）干燥步骤和粉碎步骤通过储存步骤和运输步骤连接; 和（b）从完成干燥步骤的时间到开始粉碎步骤的时间将干燥物质的时间设定为3分钟以上。
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5.发明授权Method and apparatus for producing polyacrylic acid (salt)-based water absorbent resin 有权用于生产聚丙烯酸（盐）的吸水树脂的方法和设备公开(公告)号：US09580519B2
公开(公告)日：2017-02-28
申请号：US14112774
申请日：2012-04-20
IPC分类号： H01B1/00 , C08F2/18 , C08F220/06 , C08J99/00 , C08J3/12
CPC分类号： C08F2/18 , C08F220/06 , C08J3/12 , C08J2333/02
摘要： The purpose of the present invention is to provide a method for producing a water absorbent resin in which a water absorbent resin having excellent properties can be obtained effectively. The present invention relates to a method for producing a polyacrylic acid (salt)-based water absorbent resin, which includes a polymerization step of polymerizing an aqueous monomer solution containing a polymerization inhibitor, acrylic acid (salt) and an internal cross-linking agent to produce a water-containing gel-like cross-linked polymer, a gel-crushing step of performing the gel-crushing of the water-containing gel-like cross-linked polymer simultaneously with or subsequent to the polymerization to produce a particulate water-containing gel-like cross-linked polymer, and a drying step of supplying the particulate water-containing gel-like cross-linked polymer to a continuous through-flow belt-type dryer by a traverse conveyor to dry the particulate water-containing gel-like cross-linked polymer, in which the belt temperature of the traverse conveyor is 40 to 120° C. and/or the water soluble component in the particulate water-containing gel-like cross-linked polymer on the traverse conveyor is 10% by weight or less and the water soluble component is increased after the drying step.
摘要翻译： 本发明的目的是提供一种可以有效获得具有优异性能的吸水性树脂的吸水性树脂的制造方法。 本发明涉及一种聚丙烯酸（盐）系吸水性树脂的制造方法，其包括将含有聚合抑制剂，丙烯酸（盐）和内部交联剂的单体水溶液聚合的聚合工序， 产生含水凝胶状交联聚合物，在聚合反应或聚合后同时进行凝胶状破碎的凝胶状破碎工序，制成含水凝胶状交联聚合物 凝胶状交联聚合物，以及通过横动输送机将含粒状含水凝胶状交联聚合物供给到连续流通带式干燥机的干燥工序，干燥含水凝胶状的颗粒状凝胶状 横向传送带的带温度为40〜120℃的交联聚合物和/或该混合物中的颗粒状含水凝胶状交联聚合物中的水溶性成分 惰性输送机为10重量％以下，干燥后水溶性成分增加。
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6.发明授权公开(公告)号：US09518133B2
公开(公告)日：2016-12-13
申请号：US13148359
申请日：2010-02-08
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。
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7.发明授权Polyacrylic acid (salt) -based water-absorbent resin and a method for producing it 有权聚丙烯酸（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
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。
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8.发明申请POLYACRYLIC ACID (SALT) -BASED WATER-ABSORBENT RESIN AND A METHOD FOR PRODUCING IT 有权聚氨酯酸（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
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。
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9.发明申请METHOD AND APPARATUS FOR PRODUCING POLYACRYLIC ACID (SALT)-BASED WATER ABSORBENT RESIN 有权生产聚丙烯酸（盐） - 水吸收树脂的方法和装置公开(公告)号：US20140114035A1
公开(公告)日：2014-04-24
申请号：US14112774
申请日：2012-04-20
IPC分类号： C08F2/18
CPC分类号： C08F2/18 , C08F220/06 , C08J3/12 , C08J2333/02
摘要： The purpose of the present invention is to provide a method for producing a water absorbent resin in which a water absorbent resin having excellent properties can be obtained effectively. The present invention relates to a method for producing a polyacrylic acid (salt)-based water absorbent resin, which includes a polymerization step of polymerizing an aqueous monomer solution containing a polymerization inhibitor, acrylic acid (salt) and an internal cross-linking agent to produce a water-containing gel-like cross-linked polymer, a gel-crushing step of performing the gel-crushing of the water-containing gel-like cross-linked polymer simultaneously with or subsequent to the polymerization to produce a particulate water-containing gel-like cross-linked polymer, and a drying step of supplying the particulate water-containing gel-like cross-linked polymer to a continuous through-flow belt-type dryer by a traverse conveyor to dry the particulate water-containing gel-like cross-linked polymer, in which the belt temperature of the traverse conveyor is 40 to 120° C. and/or the water soluble component in the particulate water-containing gel-like cross-linked polymer on the traverse conveyor is 10% by weight or less and the water soluble component is increased after the drying step.
摘要翻译： 本发明的目的是提供一种可以有效获得具有优异性能的吸水性树脂的吸水性树脂的制造方法。 本发明涉及一种聚丙烯酸（盐）系吸水性树脂的制造方法，其包括将含有聚合抑制剂，丙烯酸（盐）和内部交联剂的单体水溶液聚合的聚合工序， 产生含水凝胶状交联聚合物，在聚合反应或聚合后同时进行凝胶状破碎的凝胶状破碎工序，制成含水凝胶状交联聚合物 凝胶状交联聚合物，以及通过横动输送机将含粒状含水凝胶状交联聚合物供给到连续流通带式干燥机的干燥工序，干燥含水凝胶状的颗粒状凝胶状 横向传送带的带温度为40〜120℃的交联聚合物和/或该混合物中的颗粒状含水凝胶状交联聚合物中的水溶性成分 惰性输送机为10重量％以下，干燥后水溶性成分增加。
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10.发明申请公开(公告)号：US20120010372A1
公开(公告)日：2012-01-12
申请号：US13148359
申请日：2010-02-08
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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