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21. 发明授权

EP1721663B1 PARTICULATE WATER ABSORBING AGENT AND METHOD FOR PRODUCTION THEREOF, AND WATER ABSORBING ARTICLE 有权
标题翻译：颗粒吸水及其制造方法的吸水条
公开(公告)号：EP1721663B1
公开(公告)日：2016-12-14
申请号：EP05709754.5
申请日：2005-02-04
申请人： Nippon Shokubai Co.,Ltd.
发明人： DAIROKU, Yorimichi , ADACHI, Yoshifumi , NOGI, Kozo , INOUE, Hiroki , WADA, Katsuyuki , IRIE, Yoshio
IPC分类号： B01J20/26 , A61F13/53 , A61L15/60 , C08K5/00 , C08L101/14
CPC分类号： C08J3/243 , A61L15/60 , B01J20/26 , B01J20/267 , B01J2220/68 , C08J2300/102

22. 发明授权

EP1677845B1 WATER ABSORBENT AND PRODUCING METHOD OF SAME 有权
标题翻译：吸水材料及其制造方法
公开(公告)号：EP1677845B1
公开(公告)日：2011-12-14
申请号：EP04773399.3
申请日：2004-09-17
申请人： NIPPON SHOKUBAI CO., LTD.
发明人： TORII, Kazushi , SHIBATA, Hirofumi , IWAMURA, Taku , IRIE, Yoshio , DAIROKU, Yorimichi , MITSUKAMI, Yoshiro , MACHIDA, Sayaka
IPC分类号： A61L15/60 , C08F20/06 , B01J20/26 , C08J3/24
CPC分类号： C08J3/245 , A61L15/60 , B01J20/261 , B01J2220/68 , C08F20/06 , C08J2333/00
摘要： An object of the present invention is to provide a water absorbent having excellent gel properties and showing excellent properties when used in a water-absorbing material of a sanitary/hygienic material such as paper diaper. Moreover, another object of the present invention is to provide a water absorbent which is safe and excellent in liquid permeability, and in which an amount of liquid permeability improver for improving the liquid permeability is reduced. The water absorbent is made from a water-absorbing resin prepared by a specific polymerization method and having a high degree of cross-linking, a high liquid holding property and a high gel strength (its swelling pressure of gel layer of is 35 kdyne/cm2 or more). This water absorbent is further processed to have a particular particle size distribution (95wt% or more of its particles are less than 850ƒÊm but not less than 106ƒÊm, and logarithmic standard deviation (ƒĐƒÄ) is in a range of 0.25 to 0.45) and then surface cross-linked. After that, a liquid permeability improver is added therein.

23. 发明授权

EP1869119B1 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：基于聚丙烯酸（聚丙烯酸酯）作为主要组分，用于生产，吸水性CORE和吸附制品，其中所述微粒的水资源USED微粒水培养基中的吸水性树脂
公开(公告)号：EP1869119B1
公开(公告)日：2010-03-03
申请号：EP06731938.4
申请日：2006-04-11
申请人： NIPPON SHOKUBAI CO., LTD.
发明人： DAIROKU, Yorimichi , FUJIMARU, Hirotama, Lionsmansion Himejinishishikama 902 , ISHIZAKI, Kunihiko
IPC分类号： C08L33/02 , A61F13/49 , A61F13/53 , A61L15/60
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.

24. 发明公开

EP2137238A1 CLASSIFICATION METHOD OF PARTICULATE WATER ABSORBENT RESIN 有权
标题翻译：分类程序颗粒状吸水性树脂
公开(公告)号：EP2137238A1
公开(公告)日：2009-12-30
申请号：EP08739372.4
申请日：2008-03-24
申请人： Nippon Shokubai Co., Ltd.
发明人： KONISHI, Kazumasa , KADONAGA, Kenji , DAIROKU, Yorimichi , FUJINO, Shinichi
IPC分类号： C08J3/12 , 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.

25. 发明公开

EP1455853A1 WATER-ABSORBENT RESIN AND PRODUCTION PROCESS THEREFOR 有权
标题翻译：吸水性聚合物和方法及其
公开(公告)号：EP1455853A1
公开(公告)日：2004-09-15
申请号：EP02788850.2
申请日：2002-12-17
申请人： Nippon Shokubai Co., Ltd.
发明人： SAKAMOTO, Shigeru , DAIROKU, Yorimichi , FUJITA, Yasuhiro , IRIE, Yoshio
IPC分类号： A61L15/60 , C08F220/06
CPC分类号： C08F220/06 , A61L15/60 , C08F20/06 , Y10S524/916 , C08L33/02
摘要： The present invention provides such a production process that a low-cost water-absorbent resin having excellent quality can be obtained by reasonable steps in aqueous solution polymerization. The production process for a water-absorbent resin comprises a polymerization setp that includes the steps of: supplying an aqueous solution of a water-soluble unsaturated monomer component including a major proportion of acrylic acid and/or its salt into a polymerization vessel causing shearing action; and then carrying out polymerization, involving crosslinking, of the water-soluble unsaturated monomer and at the same time carrying out fine divisiion of the resultant hydrogel; with the production process being characterized in that the aqueous solution of the water-soluble unsaturated monomer component as supplied into the polymerization vessel has a temperature of not lower than 40 °C.

26. 发明公开

EP0812873A1 WATER ABSORBENT AND PROCESS AND EQUIPMENT FOR THE PRODUCTION THEREOF 失效
标题翻译： WASSER吸尘器，VERFAHREN UND VORRICHTUNG ZUR DESSEN HERSTELLUNG
公开(公告)号：EP0812873A1
公开(公告)日：1997-12-17
申请号：EP96943288.9
申请日：1996-12-25
申请人： NIPPON SHOKUBAI CO., LTD.
发明人： DAIROKU, Yorimichi , KITAYAMA, Toshimasa , NAGASUNA, Kinya , MURAKAMI, Takanori , YANO, Akito , ISHIZAKI, Kunihiko
IPC分类号： C08J3/24 , B29B9/00 , C08J3/12
CPC分类号： B29B7/421 , B29B7/401 , B29C47/385 , B29C47/605 , B29C47/6075 , B29C47/661
摘要： A high-speed agitation type mixer of a continuous extruding method including a plurality of agitating members provided around a rotational shaft inside a fixed casing is used to mix and react a water absorbing resin containing a carboxyl group with an aqueous liquid containing, for example, a crosslinking agent that can react with the carboxyl group. The agitating members of the mixer of a continuous extruding method are provided so as to form in the ejection side a second area whose thrusting force is weaker than the thrusting force in a first area in which the water absorbing resin supplied into the casing is dispersed. A device for manufacturing a water absorbing agent is thus offered which boasts good absorbency under pressure and always maintain its excellent performance with end products.
摘要翻译：使用连续挤压方法的高速搅拌型混合机，其包括设置在固定壳体内的旋转轴周围的多个搅拌部件，将含有羧基的吸水性树脂与含有例如水，可与羧基反应的交联剂。提供了连续挤压方法的混合器的搅拌构件，以便在喷射侧形成第二区域，其第二区域的推力弱于供给到壳体中的吸水树脂分散的第一区域中的推力。因此提供了一种用于制造吸水剂的装置，其在压力下具有良好的吸收性并且始终保持其与最终产品的优异性能。

27. 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

28. 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

29. 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。

30. 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.

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