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公开(公告)号：US09962680B2
公开(公告)日：2018-05-08
申请号：US13994871
申请日：2011-12-16
IPC分类号： B01J20/26 , B01J20/28 , B01J20/30 , A61L15/60 , C08F220/06 , C08F222/10
CPC分类号： B01J20/261 , A61L15/60 , B01J20/28014 , B01J20/3092 , C08F220/06 , C08F222/1006 , C08L33/02
摘要： Provided is a method for producing a polyacrylic acid (salt)-based water absorbent resin, which is a convenient production method for a water absorbent resin for an absorbent suitable for practical use, the water absorbent resin having a reduced amount of residual monomers. Disclosed is a method for producing a polyacrylic acid (salt)-based water absorbent resin, the method comprising a polymerization step of polymerizing an aqueous monomer solution containing acrylic acid (salt) as a main component; a drying step of drying a water-containing gel-like crosslinked polymer obtained in the polymerization step; a surface crosslinking step of surface crosslinking the water absorbent resin under drying or the water absorbent resin which has been dried; and a packaging step of packaging the surface crosslinked water absorbent resin, wherein an iron content in the aqueous monomer solution in the polymerization step is 2 ppm (relative to the monomer(s)) or less, a moisture content of the water absorbent resin in the packaging step is 1% by weight or more, and the method further comprises, after the packaging step, a storage step of storing the packaged water absorbent resin for 3 days or longer.
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2.发明申请POLYACRYLIC ACID (SALT)-BASED WATER ABSORBENT RESIN, AND METHOD FOR PRODUCTION THEREOF 有权聚氨酯酸（盐） - 水吸收树脂及其生产方法公开(公告)号：US20130264517A1
公开(公告)日：2013-10-10
申请号：US13994871
申请日：2011-12-16
CPC分类号： B01J20/261 , A61L15/60 , B01J20/28014 , B01J20/3092 , C08F220/06 , C08F222/1006 , C08L33/02
摘要： Provided is a method for producing a polyacrylic acid (salt)-based water absorbent resin, which is a convenient production method for a water absorbent resin for an absorbent suitable for practical use, the water absorbent resin having a reduced amount of residual monomers. Disclosed is a method for producing a polyacrylic acid (salt)-based water absorbent resin, the method comprising a polymerization step of polymerizing an aqueous monomer solution containing acrylic acid (salt) as a main component; a drying step of drying a water-containing gel-like crosslinked polymer obtained in the polymerization step; a surface crosslinking step of surface crosslinking the water absorbent resin under drying or the water absorbent resin which has been dried; and a packaging step of packaging the surface crosslinked water absorbent resin, wherein an iron content in the aqueous monomer solution in the polymerization step is 2 ppm (relative to the monomer(s)) or less, a moisture content of the water absorbent resin in the packaging step is 1% by weight or more, and the method further comprises, after the packaging step, a storage step of storing the packaged water absorbent resin for 3 days or longer.
摘要翻译： 本发明提供一种聚丙烯酸（盐）系吸水性树脂的制造方法，该吸水性树脂是适合于实用的吸收性吸水性树脂的制造方法，吸水性树脂的残留量少。 公开了一种聚丙烯酸（盐）系吸水性树脂的制造方法，其特征在于，包括使含有丙烯酸（盐）作为主要成分的单体水溶液聚合的聚合工序; 干燥步骤，在聚合步骤中干燥获得的含水凝胶状交联聚合物; 在干燥下将吸水性树脂表面交联的表面交联步骤或已被干燥的吸水性树脂; 以及包装表面交联吸水性树脂的包装步骤，其中聚合步骤中的单体水溶液中的铁含量为2ppm（相对于单体）或更低，吸水性树脂的含水量 包装步骤为1重量％以上，该方法还包括在包装步骤之后，将包装的吸水性树脂储存3天以上的储存步骤。
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公开(公告)号：US09272068B2
公开(公告)日：2016-03-01
申请号：US13634167
申请日：2011-03-14
CPC分类号： A61L15/56 , A61L15/60 , B01J20/261 , B01J20/267 , B01J2220/68 , C08F6/008 , C08J3/12 , C08J3/122 , C08J3/245 , C08J2300/14 , C08J2333/02
摘要： The disclosed process for producing a water-absorbing resin comprising: a polymerization step of polymerizing an aqueous unsaturated monomer; and a drying step of drying a particulated water-containing gel-liked crosslinked polymer, obtained in a finely crushing step during the polymerization or after the polymerization. In the process, the drying step is interrupted with a dryer kept in a heated state and thereafter the drying step is restarted.
摘要翻译： 所公开的生产吸水性树脂的方法，包括：使含水不饱和单体聚合的聚合步骤; 以及干燥步骤，在聚合过程中或聚合后，在细碎的步骤中得到颗粒状的含水凝胶状交联聚合物。 在该过程中，干燥步骤被保持在加热状态的干燥器中断，然后重新开始干燥步骤。
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公开(公告)号：US20130005926A1
公开(公告)日：2013-01-03
申请号：US13634167
申请日：2011-03-14
IPC分类号： C08F120/06
CPC分类号： A61L15/56 , A61L15/60 , B01J20/261 , B01J20/267 , B01J2220/68 , C08F6/008 , C08J3/12 , C08J3/122 , C08J3/245 , C08J2300/14 , C08J2333/02
摘要： The disclosed process for producing a water-absorbing resin comprising: a polymerization step of polymerizing an aqueous unsaturated monomer; and a drying step of drying a particulated water-containing gel-liked crosslinked polymer, obtained in a finely crushing step during the polymerization or after the polymerization. In the process, the drying step is interrupted with a dryer kept in a heated state and thereafter the drying step is restarted.
摘要翻译： 所公开的生产吸水性树脂的方法，包括：使含水不饱和单体聚合的聚合步骤; 以及干燥步骤，在聚合过程中或聚合后，在细碎的步骤中得到颗粒状的含水凝胶状交联聚合物。 在该过程中，干燥步骤被保持在加热状态的干燥器中断，然后重新开始干燥步骤。
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公开(公告)号：US20130005904A1
公开(公告)日：2013-01-03
申请号：US13634151
申请日：2011-03-14
IPC分类号： C08F20/06
CPC分类号： A61L15/56 , A61L15/60 , B01J20/261 , B01J20/267 , B01J2220/68 , C08F6/008 , C08J3/12 , C08J3/122 , C08J3/245 , C08J2300/14 , C08J2333/02
摘要： The disclosed process for producing a water-absorbing resin comprising: a polymerization step of polymerizing an aqueous unsaturated monomer; a drying step of drying a particulated water-containing gel-liked crosslinked polymer, obtained in a finely crushing step during the polymerization or after the polymerization; a pulverizing step after the drying, a classification step after the drying, and a surface treatment step after the classification. In the process is, the surface-treatment step is interrupted with a heating treatment apparatus kept in a heated state and thereafter the surface treatment step is restarted.
摘要翻译： 所公开的生产吸水性树脂的方法，包括：使含水不饱和单体聚合的聚合步骤; 干燥步骤，在聚合过程中或在聚合后，在细粉碎步骤中得到颗粒状含水凝胶状交联聚合物; 干燥后的粉碎工序，干燥后的分级工序，分级后的表面处理工序。 在该过程中，表面处理步骤被保持在加热状态的加热处理装置中断，然后重新开始表面处理步骤。
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公开(公告)号：US10307506B2
公开(公告)日：2019-06-04
申请号：US13634128
申请日：2011-03-14
摘要： The disclosed process for continuously producing a water-absorbing resin comprising a plurality of joined continuous steps; a polymerization step of polymerizing an aqueous unsaturated monomer solution, a drying step of drying a particulated water-containing gel-like crosslinked polymer obtained in a finely crushing step during the polymerization or after the polymerization, a pulverizing step after the drying, a classification step after the drying, and a surface treatment step for the water-absorbing resin powder after the classification step. In the process, with some of the above steps kept running, the other steps are interrupted, and subsequently all the steps are restarted.
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公开(公告)号：US09233186B2
公开(公告)日：2016-01-12
申请号：US13634151
申请日：2011-03-14
CPC分类号： A61L15/56 , A61L15/60 , B01J20/261 , B01J20/267 , B01J2220/68 , C08F6/008 , C08J3/12 , C08J3/122 , C08J3/245 , C08J2300/14 , C08J2333/02
摘要： The disclosed process for producing a water-absorbing resin comprising: a polymerization step of polymerizing an aqueous unsaturated monomer; a drying step of drying a particulated water-containing gel-liked crosslinked polymer, obtained in a finely crushing step during the polymerization or after the polymerization; a pulverizing step after the drying, a classification step after the drying, and a surface treatment step after the classification. In the process is, the surface-treatment step is interrupted with a heating treatment apparatus kept in a heated state and thereafter the surface treatment step is restarted.
摘要翻译： 所公开的生产吸水性树脂的方法，包括：使含水不饱和单体聚合的聚合步骤; 干燥步骤，在聚合过程中或在聚合后，在细粉碎步骤中得到颗粒状含水凝胶状交联聚合物; 干燥后的粉碎工序，干燥后的分级工序，分级后的表面处理工序。 在该过程中，表面处理步骤被保持在加热状态的加热处理装置中断，然后重新开始表面处理步骤。
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8.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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9.发明申请POLYACRYLIC ACID (SALT), POLYACRYLIC ACID (SALT)-BASED WATER-ABSORBING RESIN, AND PROCESS FOR PRODUCING SAME 审中-公开聚丙烯酸（盐），聚丙烯酸（盐） - 水吸收树脂及其生产方法公开(公告)号：US20130043384A1
公开(公告)日：2013-02-21
申请号：US13643506
申请日：2011-04-26
CPC分类号： C08F220/06 , B01J20/261 , B01J20/3085
摘要： A polyacrylic acid (salt), or a polyacrylic acid (salt)-based water-absorbing resin, contains a tracer for detecting various troubles in the water-absorbing resin during the period from the production of the water-absorbing resin to the use and discard thereof by a consumer. The polyacrylic acid (salt)-based water-absorbing resin has a stable carbon isotope ratio, as determined by accelerator mass spectrometry, of less than −20% and a radioactive carbon content of 1.0×10−14 or mole. The polyacrylic acid (salt)-based water-absorbing resin has: a CRC of 10 [g/g] or mole; an AAP of 20 [g/g] or mole; an Ext of 35 wt. % or less; a content of residual monomers of 1,000 ppm or less; a PSD in which the proportion of particles having a particle diameter of 150 μm or larger but less than 850 μm is 90 wt. % or more; and an FSR of 0.15 [g/g/s] or more.
摘要翻译： 聚丙烯酸（盐）或基于聚丙烯酸（盐）的吸水性树脂含有用于检测从吸水性树脂的制造到使用时的吸水性树脂的各种问题的示踪剂， 由消费者丢弃。 基于聚丙烯酸（盐）的吸水树脂通过促进剂质谱测定，其碳同位素比率低于-20％，放射性碳含量为1.0×10-14或摩尔。 基于聚丙烯酸（盐）的吸水性树脂具有10μg/ g或更低的CRC; 20克/克或摩尔的AAP; 外加35重量％ ％ 或更少; 残留单体的含量为1000ppm以下; 其中粒径为150μm以上但小于850μm的粒子的比例为90重量％的PSD ％ 或者更多; 并且FSR为0.15 [g / g / s]以上。
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公开(公告)号：US10294315B2
公开(公告)日：2019-05-21
申请号：US13499037
申请日：2010-09-30
摘要： A method for producing a polyacrylic acid (salt)-based water absorbent resin, sequentially including the steps of: storing or producing acrylic acid; mixing acrylic acid containing a polymerization inhibitor with water, a crosslinking agent, and optionally, a basic composition, and/or neutralizing them, to prepare an aqueous monomer solution; polymerizing the aqueous monomer solution; drying an obtained water-containing gel-like crosslinked polymer; and optionally carrying out surface crosslinking, wherein the acrylic acid containing the polymerization inhibitor has a water content of not higher than 1,000 ppm (by mass; the same applies hereinafter), and/or the aqueous monomer solution has a formic acid content of 1 to 700 ppm, relative to the monomer.
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