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31. 发明授权

EP2395029B1 POLYACRYLIC ACID (SALT)-BASED WATER-ABSORBENT RESIN AND A METHOD FOR PRODUCING IT 有权
公开(公告)号：EP2395029B1
公开(公告)日：2020-01-15
申请号：EP10738652.6
申请日：2010-02-08
申请人： Nippon Shokubai Co., Ltd.
发明人： FUJINO, Shinichi , NAGASAWA, Eri , MATSUMOTO, Satoshi , ISHIZAKI, Kunihiko
IPC分类号： C08F20/06

32. 发明授权

EP2415822B1 PROCESS FOR PRODUCING PARTICULATE WATER-ABSORBING RESIN 有权
公开(公告)号：EP2415822B1
公开(公告)日：2019-03-20
申请号：EP10758829.5
申请日：2010-03-31
申请人： Nippon Shokubai Co., Ltd.
发明人： DAIROKU, Yorimichi , TAKAAI, Toshihiro , FUJINO, Shinichi , MATSUMOTO, Satoshi
IPC分类号： C08J3/12 , B01J20/26 , C08F20/06 , C08J3/24 , C08F220/06

33. 发明授权

EP2471847B2 PROCESS FOR PRODUCTION OF WATER-ABSORBABLE RESIN 有权
公开(公告)号：EP2471847B2
公开(公告)日：2018-01-03
申请号：EP10812058.5
申请日：2010-08-30
申请人： Nippon Shokubai Co., Ltd.
发明人： FUJINO, Shinichi , NOGI, Kozo , ISHIZAKI, Kunihiko
IPC分类号： C08J3/24 , C08J3/12 , A61L15/00
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: EXPRESSION 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 .

34. 发明授权

EP2189478B1 PROCESS FOR PRODUCING WATER-ABSORBING RESIN 有权
标题翻译：用于吸水性树脂的生产过程
公开(公告)号：EP2189478B1
公开(公告)日：2016-03-09
申请号：EP08828813.9
申请日：2008-08-27
申请人： Nippon Shokubai Co., Ltd.
发明人： MATSUMOTO, Makoto , TAKAAI, Toshihiro , DAIROKU, Yorimichi , FUJINO, Shinichi , MATSUMOTO, Satoshi , KATO, Seiji
IPC分类号： C08F20/06 , C08F6/00 , C08F20/04 , B01J8/24 , C08J3/12 , C08J3/24 , F26B3/08
CPC分类号： C08F6/008 , C08F20/06 , C08J3/12 , C08J3/126 , C08J3/245 , C08J2300/14 , F26B3/08

35. 发明公开

EP2527391A1 METHOD FOR PRODUCING WATER ABSORBENT RESIN 有权
标题翻译： VERFAHREN ZUR HERSTELLUNG EINES WASSERABSORBIERENDEN HARZES
公开(公告)号：EP2527391A1
公开(公告)日：2012-11-28
申请号：EP11734736.9
申请日：2011-01-20
申请人： Nippon Shokubai Co., Ltd.
发明人： TAKAAI, Toshihiro , FUJINO, Shinichi , WADA, Hidenori
IPC分类号： C08J3/12 , B01J20/26 , C08F6/10
CPC分类号： C08F6/008 , A61L15/60 , B01J20/267 , B01J20/28004 , B01J20/28047 , B01J2220/68 , C08F6/006 , C08F20/04 , C08F20/06 , C08J3/12 , C08J3/245 , C08J9/28 , C08J2300/14 , C08J2333/02 , C08L33/02
摘要： In a method for producing a water absorbent resin by drying a particulate hydrogel having a high solid content concentration (of 45% by weight or more, preferably 50% by weight or more, and more preferably 55% by weight or more), a method for efficient drying water absorbent resin having maintained/improved physical properties is provided.
Disclosed is a method for producing a water absorbent resin, comprising: a polymerization step to polymerize an unsaturated monomer, and; a drying step to dry a particulate hydrogel crosslinked polymer, which is obtained by micronization of a hydrogel polymer during or after the polymerization and which has a solid content concentration of 45% by weight or more, wherein, an amount of a peroxide in the particulate hydrogel crosslinked polymer to be dried in the drying step is 1 to 100 ppm relative to the weight of the solid content of the particulate hydrogel crosslinked polymer, and a drying temperature of the particulate hydrogel crosslinked polymer in the drying step is 160°C or more.
摘要翻译：在通过干燥具有高固含量浓度（45重量％以上，优选50重量％以上，更优选55重量％以上）的微粒状水凝胶的方法制造吸水性树脂的方法中，提供了具有保持/改善的物理性能的高效干燥吸水性树脂。公开了一种吸水性树脂的制造方法，其特征在于，包括：使不饱和单体聚合的聚合工序，干燥步骤，其干燥颗粒状水凝胶交联聚合物，其通过在聚合期间或之后微粒化水凝胶聚合物并且其固体成分浓度为45重量％以上，其中颗粒中的过氧化物的量在干燥步骤中要干燥的水凝胶交联聚合物相对于颗粒状水凝胶交联聚合物的固体含量的重量为1〜100ppm，干燥步骤中的水凝胶交联聚合物颗粒的干燥温度为160℃以上。

36. 发明公开

EP2527390A1 METHOD FOR PRODUCING WATER ABSORBENT RESIN 有权
标题翻译：生产吸水树脂的方法
公开(公告)号：EP2527390A1
公开(公告)日：2012-11-28
申请号：EP11734735.1
申请日：2011-01-20
申请人： Nippon Shokubai Co., Ltd.
发明人： TAKAAI, Toshihiro , FUJINO, Shinichi , WADA, Hidenori
IPC分类号： C08J3/12 , B01J20/26 , C08F6/10
CPC分类号： C08F6/008 , A61L15/60 , B01J20/267 , B01J2220/68 , C08J3/075 , C08J3/12 , C08J3/122 , C08J2300/14
摘要： With regard to a method for producing a water absorbent resin by drying a particulate hydrogel crosslinked polymer having a high solid content concentration (of 45% by weight or more, further 50% by weight or more, and particularly 55% by weight or more), to provide a method for efficient drying of a water absorbent resin having maintained/improved physical properties.
A production method in which a through-circulation belt type dryer or a through-circulation stationary batch type dryer is used in the drying step and the drop and scatter ratio of a particulate hydrogel crosslinked polymer is set to 1% by weight or less.
摘要翻译：关于通过干燥具有高固体含量浓度（45重量％以上，进一步50重量％以上，特别是55重量％以上）的颗粒状含水凝胶交联聚合物来制造吸水性树脂的方法，提供一种有效干燥保持/改善物理性能的吸水树脂的方法。在干燥工序中使用贯通循环带式干燥机或循环式固定间歇式干燥机，使颗粒状含水凝胶交联聚合物的落下散布率为1重量％以下的制造方法。

37. 发明公开

EP2471848A1 PROCESS FOR PRODUCTION OF WATER-ABSORBABLE RESIN 有权
标题翻译：生产吸水树脂的方法
公开(公告)号：EP2471848A1
公开(公告)日：2012-07-04
申请号：EP10812059.3
申请日：2010-08-30
申请人： Nippon Shokubai Co., Ltd.
发明人： MATSUMOTO, Koji , NOGI, Kozo , FUJINO, Shinichi , DAIROKU, Yorimichi , ISHIZAKI, Kunihiko
IPC分类号： C08J3/24 , C08J3/12
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: EXPRESSION 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 .
摘要翻译：发明内容本发明的目的在于有效地高效率地得到性能优异的吸水性树脂。用于吸水性树脂的生产方法，其包括：用于通过使单体水溶液进行聚合反应来获得水凝胶的聚合步骤; 和用于干燥水凝胶的干燥步骤; 其中干燥步骤中的干燥使用连续通流带式干燥机进行; 向干燥工序供给的水凝胶的固体成分为35重量％以上，在连续流通带上装载在通流带上的水凝胶的下述表达式1所示的厚度变化率（1）为1.05 至5：表达式1厚度变化率1 =在通流带的宽度方向上的水凝胶的最大厚度/在通流带的宽度方向上的水凝胶的平均厚度。

38. 发明公开

EP2415822A1 PROCESS FOR PRODUCING PARTICULATE WATER-ABSORBING RESIN 有权
标题翻译：用于吸水性树脂微粒的制造方法
公开(公告)号：EP2415822A1
公开(公告)日：2012-02-08
申请号：EP10758829.5
申请日：2010-03-31
申请人： Nippon Shokubai Co., Ltd.
发明人： DAIROKU, Yorimichi , TAKAAI, Toshihiro , FUJINO, Shinichi , MATSUMOTO, Satoshi
IPC分类号： C08J3/12
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.

39. 发明授权

EP1641883B1 WATER ABSORBENT RESIN COMPOSTION AND PRODUCTION METHOD THEREOF 有权
标题翻译：吸水性树脂包括成分及其制造方法
公开(公告)号：EP1641883B1
公开(公告)日：2012-02-08
申请号：EP04746711.3
申请日：2004-06-23
申请人： NIPPON SHOKUBAI CO., LTD.
发明人： ADACHI, Yoshifumi , KITANO, Takahiro , FUJINO, Shinichi , WADA, Katsuyuki , TORII, Kazushi , IWAMURA, Taku , MACHIDA, Sayaka
IPC分类号： C08L101/14 , C08K3/10 , A61F13/53 , A61L15/60
CPC分类号： A61L15/60 , A61F2013/530686 , A61F2013/530744
摘要： The production method of a water absorbent resin composition including a particulate water absorbent resin, wherein: 95 wt % or more of particles whose particle diameter is less than 850 µm and not less, than 106 µm are contained, and a weight average particle diameter of the particles is less than 500 µm and not less than 300 µ m and a logarith mic standard deviation (σξ) of a particle size distribution is 0.45 or less, and a water-soluble component of the water absorbent composition is 35 wt % or less, and a multivalent metal component is contained, and an extraction rate of the multivalent metal component is 5.0 wt % or more and less than 100 wt %, thereby providing the water absorbent resin composition, free from any coagulation of particles in high humidity, which has superiror absorbent property in terms of an absorbency and a diffusing absorbency under pressure.

40. 发明公开

EP2395029A1 POLYACRYLIC ACID (SALT) TYPE WATER-ABSORBENT RESIN AND PROCESS FOR PRODUCTION OF SAME 有权
标题翻译：聚丙烯酸（盐）系吸水性FOR PRODUCING树脂AND PROCESS
公开(公告)号：EP2395029A1
公开(公告)日：2011-12-14
申请号：EP10738652.6
申请日：2010-02-08
申请人： Nippon Shokubai Co., Ltd.
发明人： FUJINO, Shinichi , NAGASAWA, Eri , MATSUMOTO, Satoshi , ISHIZAKI, Kunihiko
IPC分类号： C08F20/06
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 400ppm of propionic acid.

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