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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：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：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：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.发明授权公开(公告)号：US08420752B2
公开(公告)日：2013-04-16
申请号：US12933524
申请日：2009-03-31
CPC分类号： C08J3/245 , A61L15/60 , B01J19/0086 , B01J2219/00006 , C07C51/41 , C07C51/50 , C08F2/10 , C08F2/48 , C08F20/06 , C08F220/06 , C08F222/1006 , C08J2333/02 , Y10T137/4673 , Y10T137/469 , Y10T137/86187
摘要： An apparatus (2) includes a neutralization tank (3), a pump (4), a heat exchanger (6), a line mixer (8), a polymerizer (10), a first pipe (12), a second pipe (14), a third pipe (16), a fourth pipe (18), and a fifth pipe (20). Continuously supplied into the neutralization tank (3) are a monomer aqueous solution and a basic aqueous solution, so as to prepare a mixture solution. The mixture solution is circulated through the first pipe (12), the pump (4), the second pipe (14), the heat exchanger (6), and the third pipe (16). The mixture solution is supplied to the polymerizer through the fourth pipe (18). The apparatus (2) satisfies a requirement that a value X is not more than 200, which value X is found according to the following expression: “X=(V/F)·A”, wherein V is a volume of the mixture solution present in a neutralization system, F is a flow volume of the mixture solution to be supplied to a polymerization system, and A is a contact area of the mixture solution present in the neutralization system with a device(s) and a pipe(s) constituting the neutralization system. With this arrangement, it is possible to provide a water absorbent resin having superior whiteness.
摘要翻译： 设备（2）包括中和罐（3），泵（4），热交换器（6），管线混合器（8），聚合器（10），第一管（12），第二管 14），第三管（16），第四管（18）和第五管（20）。 连续供给到中和罐（3）中的是单体水溶液和碱性水溶液，以制备混合溶液。 混合溶液通过第一管（12），泵（4），第二管（14），热交换器（6）和第三管（16）循环。 混合溶液通过第四管（18）供给聚合反应器。 装置（2）满足X值为200以下的要求，根据下式求出X值：X =（V / F）·A，其中，V为混合溶液的体积 中和系统F是待供给到聚合体系的混合溶液的流量，A是中和系统中存在的混合溶液与构成该中和系统的装置和管道的接触面积。 中和系统 通过这种布置，可以提供具有优异白度的吸水性树脂。
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6.发明申请公开(公告)号：US20110021725A1
公开(公告)日：2011-01-27
申请号：US12933524
申请日：2009-03-31
IPC分类号： C08F2/01 , B01J19/00 , C08F220/06
CPC分类号： C08J3/245 , A61L15/60 , B01J19/0086 , B01J2219/00006 , C07C51/41 , C07C51/50 , C08F2/10 , C08F2/48 , C08F20/06 , C08F220/06 , C08F222/1006 , C08J2333/02 , Y10T137/4673 , Y10T137/469 , Y10T137/86187
摘要： An apparatus (2) includes a neutralization tank (3), a pump (4), a heat exchanger (6), a line mixer (8), a polymerizer (10), a first pipe (12), a second pipe (14), a third pipe (16), a fourth pipe (18), and a fifth pipe (20). Continuously supplied into the neutralization tank (3) are a monomer aqueous solution and a basic aqueous solution, so as to prepare a mixture solution. The mixture solution is circulated through the first pipe (12), the pump (4), the second pipe (14), the heat exchanger (6), and the third pipe (16). The mixture solution is supplied to the polymerizer through the fourth pipe (18). The apparatus (2) satisfies a requirement that a value X is not more than 200, which value X is found according to the following expression: “X=(V/F)·A”, wherein V is a volume of the mixture solution present in a neutralization system, F is a flow volume of the mixture solution to be supplied to a polymerization system, and A is a contact area of the mixture solution present in the neutralization system with a device(s) and a pipe(s) constituting the neutralization system. With this arrangement, it is possible to provide a water absorbent resin having superior whiteness.
摘要翻译： 设备（2）包括中和罐（3），泵（4），热交换器（6），管线混合器（8），聚合器（10），第一管（12），第二管 14），第三管（16），第四管（18）和第五管（20）。 连续供给到中和罐（3）中的是单体水溶液和碱性水溶液，以制备混合溶液。 混合溶液通过第一管（12），泵（4），第二管（14），热交换器（6）和第三管（16）循环。 混合溶液通过第四管（18）供给聚合反应器。 设备（2）满足值X不大于200的要求，根据以下表达式找到该值X：“X =（V / F）·A”，其中V是混合溶液的体积 存在于中和系统中，F是供给聚合体系的混合溶液的流动体积，A是中和系统中存在的混合溶液与装置和管道的接触面积， 构成中和体系。 通过这种布置，可以提供具有优异白度的吸水性树脂。
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公开(公告)号：US10099254B2
公开(公告)日：2018-10-16
申请号：US12532909
申请日：2008-03-24
摘要： A particulate water absorbent resin is obtained by polymerizing an unsaturated monomer so as to form a cross-linked polymer hydrogel and drying and pulverizing the cross-linked polymer hydrogel, and plural classification steps different from each other are carried out so as to remove fine powder. In this manner, the present invention provides the method for classification of particulate water absorbent resin which method allows particulate water absorbent resin having a desired particle diameter range to be efficiently obtained at low cost while securing the high productivity even in case where a larger production equipment is used.
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公开(公告)号：US20120157648A1
公开(公告)日：2012-06-21
申请号：US13392909
申请日：2010-08-30
IPC分类号： C08F220/06
CPC分类号： C08J3/12 , C08J3/245 , C08J2300/14 , C08J2333/02
摘要： [PROBLEM]It is an object of the present invention to efficiently obtain efficiently a water-absorbent resin having excellent property.[SOLUTION]A production method for a water-absorbent resin, comprising: a polymerization step for obtaining hydrogel by subjecting a monomer aqueous solution to a polymerization reaction; and a drying step for drying the hydrogel; wherein drying in the drying step is performed using a continuous through-flow belt-type drying machine; solid content of the hydrogel supplied to the drying step is 35% by weight or more, and thickness variation rate (1) represented by the following EXPRESSION 1 of the hydrogel loaded onto through-flow belt in the continuous through-flow belt, is 1.05 to 5: [MATH. 1] Thickness variation rate (1)=(Maximum thickness of hydrogel in a width direction of the through-flow belt)/(Average thickness of hydrogel in a width direction of the through-flow belt). [EXPRESSION 1]
摘要翻译： 本发明的目的在于有效地获得具有优异性能的吸水性树脂。 [解决方案]一种吸水性树脂的制备方法，包括：通过使单体水溶液进行聚合反应获得水凝胶的聚合步骤; 和干燥步骤，用于干燥水凝胶; 其中干燥步骤中的干燥是使用连续的通流式带式干燥机进行的; 提供给干燥步骤的水凝胶的固体含量为35重量％以上，并且由连续贯流带中的贯流带上的水凝胶的以下表达式1表示的厚度变化率（1）为1.05 到5：[MATH。 1]厚度变化率（1）=（贯穿流动带的宽度方向的水凝胶的最大厚度）/（贯通带的宽度方向的水凝胶的平均厚度）。 [表达1]
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公开(公告)号：US20100101982A1
公开(公告)日：2010-04-29
申请号：US12532909
申请日：2008-03-24
IPC分类号： B07B9/00
CPC分类号： B07B9/00 , C08J3/12 , C08J3/122 , C08J2300/00
摘要： A particulate water absorbent resin is obtained by polymerizing an unsaturated monomer so as to form a cross-linked polymer hydrogel and drying and pulverizing the cross-linked polymer hydrogel, and plural classification steps different from each other are carried out so as to remove fine powder. In this manner, the present invention provides the method for classification of particulate water absorbent resin which method allows particulate water absorbent resin having a desired particle diameter range to be efficiently obtained at low cost while securing the high productivity even in case where a larger production equipment is used.
摘要翻译： 通过聚合不饱和单体以形成交联聚合物水凝胶并干燥和粉碎交联聚合物水凝胶，获得颗粒状吸水性树脂，并且进行彼此不同的多个分级步骤，以除去细粉末 。 以这种方式，本发明提供了一种颗粒状吸水性树脂的分级方法，即使在较大的生产设备的情况下，也能够以高成本有效地获得具有期望粒径范围的颗粒状吸水性树脂， 用来。
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公开(公告)号：US07429009B2
公开(公告)日：2008-09-30
申请号：US10858269
申请日：2004-06-02
CPC分类号： C08J7/12 , C08J3/12 , C08J3/16 , C08J2300/14
摘要： An object of the present invention is to make it possible, in order to form the fine powder of the water-absorbent resin into a water-absorbing material having particle diameters favorable for practical use, that a water-absorbing material which has high agglomeration strength and is excellent in the quality performances is obtained at a low cost with good efficiency without causing the problems of the adhesion to such as treatment apparatus. As a means of achieving this object, a process according to the present invention for production of a water-absorbing material is a process for production of a water-absorbing material from a fine powder of a water-absorbent resin wherein the water-absorbing material is a particulate water-absorbing material having particle diameters larger than the fine powder, with the process comprising: a step (a) of adding an aqueous liquid to the fine powder of the water-absorbent resin with such as a high-speed stirring type continuous extrusion mixer 50 so that the overall average water content will be in the range of 20 to 60 weight %, whereby particles of the fine powder are agglomerated to thus obtain a particulate hydrous material 70 of the water-absorbent resin; and a step (b) of applying a mechanical compression force to the particulate hydrous material 70 and, at the same time, knead-pulverizing it, with such as a meat chopper apparatus 30, thereby obtaining particulate agglomerates 40 of the water-absorbing material.
摘要翻译： 本发明的目的在于，为了将吸水性树脂的微细粉末形成为具有实用的粒径的吸水材料，可以实现具有高聚集强度的吸水材料 并且以良好的效率以低成本获得优异的质量性能，而不会导致诸如处理装置的粘合问题。 作为实现该目的的手段，根据本发明的吸水材料的制造方法是从吸水性树脂的细粉末制造吸水材料的方法，其中吸水材料 是粒径大于细粉末的颗粒状吸水材料，该方法包括：将水性液体添加到吸水性树脂的细粉末中的步骤（a），例如高速搅拌型 连续挤出混合器50，使得总平均含水量在20〜60重量％的范围内，由此细粉末颗粒凝聚，从而获得吸水性树脂的含水粒子70; 以及将步骤（b）向颗粒状含水材料70施加机械压缩力，并且同时用诸如斩肉器装置30的方式对其进行捏合粉碎，从而获得吸水材料的颗粒团聚体40 。
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