公开(公告)号：US20120298913A1

公开(公告)日：2012-11-29

申请号：US13568870

申请日：2012-08-07

申请人： Kimihiko Kondo ,  Takayasu Taniguchi ,  Yasuhiro Nawata

发明人： Kimihiko Kondo ,  Takayasu Taniguchi ,  Yasuhiro Nawata

IPC分类号： C08L33/26

CPC分类号： C08J3/245 ,  A61F2013/530481 ,  A61F2013/5307 ,  Y10T442/2484

摘要： A method for production of a water-absorbent resin particle which is excellent in a particle strength, and in which even after mechanical impact, a particle diameter retaining rate and a retaining rate of water absorption capacity under pressure are high, and an absorbent material using the same particle. The method includes the steps of polymerizing a water-soluble ethylenic unsaturated monomer using a water-soluble radical polymerization initiator, optionally in the presence of a crosslinking agent, to obtain a water-absorbent resin particle precursor, adding a post-crosslinking agent to crosslink a surface of the particle, adding an amorphous silica particle and adjusting the resulting particle to a moisture content of less than 10%, and subsequently adding moisture to adjust a final moisture content of the resulting particle to 10 to 20%.

摘要翻译： 制造吸收性粒子强度优异的吸水性树脂粒子的方法，即使在机械冲击之后，压力下的粒径保持率和吸水能力的保持率高，也可以使用使用 相同的粒子 该方法包括以下步骤：任选地在交联剂存在下，使用水溶性自由基聚合引发剂使水溶性烯属不饱和单体聚合，得到吸水性树脂颗粒前体，添加后交联剂进行交联 颗粒的表面，添加无定形二氧化硅颗粒并将所得颗粒调节至低于10％的水分含量，随后加入水分以将所得颗粒的最终含水量调节至10至20％。

公开(公告)号：US20100256308A1

公开(公告)日：2010-10-07

申请号：US12738847

申请日：2008-09-09

申请人： Junichi Takatori ,  Masayoshi Handa ,  Yasuhiro Nawata

发明人： Junichi Takatori ,  Masayoshi Handa ,  Yasuhiro Nawata

IPC分类号： C08G65/00

CPC分类号： B01J20/267 ,  C08F8/34 ,  C08F2800/20 ,  C08F2810/20 ,  C08J3/245 ,  C08J2333/02 ,  C08F20/02 ,  C08F255/04

摘要： A method for producing a water-absorbent resin, characterized by adding an oxetane compound represented by the following general formula (1): wherein R1 is an alkyl group having 1 to 6 carbon atoms; R2 is an alkanediyl group having 1 to 6 carbon atoms; and X is an atomic group containing at least one group selected from the group consisting of carbonyl group, phosphoryl group, and sulfonyl group, to a water-absorbent resin precursor obtainable by polymerizing water-soluble ethylenically unsaturated monomers, and subjecting the components to a post-crosslinking reaction while heating; and a water-absorbent resin obtainable by the method as defined above, characterized in that the water-absorbent resin has a water-retention capacity of physiological saline of 30 g/g or more, a water-absorption capacity of physiological saline under load of 2.07 kPa of 28 mL/g or more, and a water-soluble substance of 20% by mass or less. Since the water-absorbent resin obtained by the method of the present invention is excellent in various properties such as water-retention capacity and water-absorption capacity under load and also gives consideration to safety, such as having a reduced water-soluble substance, the water-absorbent resin can be preferably used, for example, in hygienic materials such as disposable diaper, incontinence pad and sanitary napkin, in particular, in disposable diaper.

摘要翻译： 一种吸水性树脂的制造方法，其特征在于，添加下述通式（1）表示的氧杂环丁烷化合物：其中，R 1为碳原子数1〜6的烷基。 R2是碳原子数1〜6的烷二基， X是含有选自羰基，磷酰基和磺酰基的至少一个基团的原子团，可以通过聚合水溶性烯键式不饱和单体得到的吸水性树脂前体， 加热后交联反应; 以及通过上述方法得到的吸水性树脂，其特征在于，吸水性树脂的生理盐水的保水能力为30g / g以上，生理盐水的吸水能力为 2.07kPa为28mL / g以上，水溶性物质为20质量％以下。 由于通过本发明的方法获得的吸水性树脂由于在负载下的保水能力和吸水能力等各种性能都很好，还考虑到具有还原性水溶性物质的安全性， 吸水性树脂可以优选用于卫生材料如一次性尿布，失禁垫和卫生巾，特别是一次性尿布中。

公开(公告)号：US20080280154A1

公开(公告)日：2008-11-13

申请号：US11914506

申请日：2006-05-10

申请人： Hiromu Kobushi ,  Masayoshi Handa ,  Yasuhiro Nawata

发明人： Hiromu Kobushi ,  Masayoshi Handa ,  Yasuhiro Nawata

IPC分类号： B32B27/06 ,  C08F20/06 ,  C08L5/00 ,  C08L33/02 ,  C08F6/00

CPC分类号： A61L15/60 ,  C08F8/14 ,  C08F2810/20 ,  C08J3/243 ,  Y10S526/93 ,  Y10T428/254 ,  Y10T428/2982 ,  Y10T428/31855 ,  C08F220/06

摘要： The present invention provides a process for producing water-absorbing resin particles which possess a high water retention capacity (absorbing capacity), a high water-absorbing capacity under pressure, and a high gel strength and a small amount of water-soluble substance and is favorably usable in sanitary materials; water-absorbing resin particles obtained by the process; and absorbent materials and absorbent articles made by using the particles. More specifically, the water-absorbing resin particles are produced by a process for producing water-absorbing resin particles, comprising a step of a post-crosslinking reaction by adding a post-crosslinking agent in at least two stages to a water-absorbing resin particle precursor obtained by polymerization of a water-soluble ethylenic unsaturated monomer to carry out the post-crosslinking reaction.

摘要翻译： 本发明提供一种具有高保水能力（吸收能力），高压力吸水能力和高凝胶强度和少量水溶性物质的吸水性树脂颗粒的制造方法，是 有利于卫生材料; 通过该方法获得的吸水树脂颗粒; 以及通过使用该颗粒制成的吸收材料和吸收制品。 更具体地，吸水性树脂颗粒通过生产吸水性树脂颗粒的方法制备，包括通过将至少两个阶段的后交联剂添加到吸水性树脂颗粒中的后交联反应步骤 通过聚合水溶性烯属不饱和单体进行后交联反应获得的前体。

公开(公告)号：US06573330B1

公开(公告)日：2003-06-03

申请号：US09208422

申请日：1998-12-10

申请人： Masato Fujikake ,  Yasuhiro Nawata ,  Magoto Shirakawa ,  Masakazu Yamamori ,  Shioko Yoshinaka ,  Morio Nakamura

发明人： Masato Fujikake ,  Yasuhiro Nawata ,  Magoto Shirakawa ,  Masakazu Yamamori ,  Shioko Yoshinaka ,  Morio Nakamura

IPC分类号： C08F26502

CPC分类号： C08F291/00 ,  C08F265/02 ,  C08F2/16

摘要： A process for preparing a water-absorbent resin is provided which enables the water-absorbent resin to ensure the reduction in the release amount of liquid and the increase in the liquid diffusibility. In the preparation process, the water-absorbent resin is prepared by polymerization of a water-soluble ethylenic unsaturated monomer. The polymerization of the water-soluble ethylenic unsaturated monomer is allowed to take place in the presence of a water-absorbent resin having a water-absorbing rate different from that of a water-absorbent resin resulting from polymerization of the water-soluble ethylenic unsaturated monomer. In a preferred mode, the polymerization is performed by a reversed-phase suspension polymerization method.

摘要翻译： 提供了一种制备吸水性树脂的方法，其使得吸水性树脂能够确保液体的释放量的降低和液体扩散性的增加。 在制备方法中，吸水性树脂通过水溶性烯键式不饱和单体的聚合制备。 使水溶性烯属不饱和单体的聚合在吸水性树脂的存在下进行，该吸水性树脂的吸水速度与由水溶性烯属不饱和单体聚合引起的吸水性树脂的吸水速度不同 。 在优选的方式中，通过反相悬浮聚合法进行聚合。

公开(公告)号：US20120070484A1

公开(公告)日：2012-03-22

申请号：US13304039

申请日：2011-11-23

申请人： Takayasu TANIGUCHI ,  Tatsuya Oida ,  Yasuhiro Nawata

发明人： Takayasu TANIGUCHI ,  Tatsuya Oida ,  Yasuhiro Nawata

IPC分类号： A01N25/10 ,  A01N59/26 ,  A01P1/00 ,  A01N59/16

CPC分类号： A61L15/46 ,  A01N59/16 ,  A61L15/60 ,  A61L2300/104 ,  A61L2300/404 ,  A61L2300/622 ,  C08K9/12 ,  C08L101/14 ,  A01N25/08 ,  A01N25/10 ,  A01N2300/00

摘要： A water-absorbent resin composition having an antimicrobial property, which suppresses the generation of dust of the antimicrobial agent. A water-absorbent resin composition comprising a water-absorbent resin and an antimicrobial agent comprising an inorganic compound carrying an antimicrobial metal, the water-absorbent resin composition being characterized in that the degree of generated dust of the water-absorbent resin composition is at most 100 CPM. The water-absorbent resin composition of the present invention can be suitably used as hygienic materials such as disposable diaper, sanitary napkin and incontinence pad; urine-absorbent materials for pets; materials for civil engineering and construction such as packing materials; drip absorbents; food freshness retaining materials such as cold-reserving agents; horticultural articles such as water-retaining materials for soils; and the like.

摘要翻译： 具有抗菌性的吸水性树脂组合物，其抑制抗微生物剂的粉尘的产生。 一种吸水性树脂组合物，其含有吸水性树脂和含有携带抗微生物金属的无机化合物的抗微生物剂，所述吸水性树脂组合物的特征在于，吸水性树脂组合物产生的粉尘的量最多为 100 CPM。 本发明的吸水性树脂组合物可以适合用作一次性尿布，卫生巾和失禁垫等卫生材料; 宠物用吸水材料; 土木工程施工材料如包装材料; 滴水吸水剂 食物保鲜材料如冷藏剂; 园艺用品如土壤保水材料; 等等。

公开(公告)号：US07868075B2

公开(公告)日：2011-01-11

申请号：US10552152

申请日：2004-04-07

申请人： Takayasu Taniguchi ,  Masayoshi Handa ,  Yasuhiro Nawata

发明人： Takayasu Taniguchi ,  Masayoshi Handa ,  Yasuhiro Nawata

IPC分类号： C08K5/04 ,  C08K5/09 ,  H01B1/12 ,  A61F13/15 ,  A61F13/20

CPC分类号： C08L101/14 ,  A61F13/8405 ,  A61L15/425 ,  A61L15/46 ,  A61L15/60 ,  A61L2300/102 ,  A61L2300/21 ,  A61L2300/404 ,  A61L2300/45 ,  B32B27/18

摘要： The object of the present invention is to provide a water-absorbing resin compound, wherein the water-absorbing resin compound can retain antibacterial properties of an antibacterial metal to suppress the emission of unpleasant odors even when an organic material exists in a system in the case of using an eluting-type antibacterial agent. Thus, the present invention relates to a water-absorbing resin compound, which comprises a water-absorbing resin, an antibacterial agent having a porous material incorporating an antibacterial metal, and a metal chelating agent. Further, the present invention also relates to an absorbing material, which comprises a water-absorbing resin compound of the present invention, and a hydrophilic fiber as well as an absorbing product, which comprises a liquid-permeable sheet and a liquid-non-permeable sheet, and an absorbing material comprising a water-absorbing resin compound of the present invention, and a hydrophilic fiber between the liquid-permeable sheet and the liquid-non-permeable sheet.

摘要翻译： 本发明的目的是提供一种吸水性树脂化合物，其中吸水性树脂化合物可以保持抗菌金属的抗菌性能，以抑制令人不快的气味的排放，即使当在该情况下的系统中存在有机材料时 使用洗脱型抗菌剂。 因此，本发明涉及一种吸水性树脂化合物，其包含吸水性树脂，具有包含抗菌金属的多孔材料的抗菌剂和金属螯合剂。 此外，本发明还涉及一种吸收材料，其包含本发明的吸水性树脂化合物和亲水性纤维以及吸收产品，其包含透液性片和不透液性的片 片材，以及包含本发明的吸水性树脂化合物的吸收材料和透液性片材与不透液性片材之间的亲水性纤维。

公开(公告)号：US20090182092A1

公开(公告)日：2009-07-16

申请号：US12298195

申请日：2007-04-26

申请人： Hideki Yokoyama ,  Yasuhiro Nawata

发明人： Hideki Yokoyama ,  Yasuhiro Nawata

IPC分类号： C08F2/08 ,  C08F2/04

CPC分类号： C08F2/18 ,  C08F2/32 ,  C08F220/06

摘要： A purpose of the present invention is to reduce odor of a water-absorbent resin during absorption of water. Such the invention is attained by a process for production of a water-absorbent resin by subjecting a water-soluble ethylenically unsaturated monomer to reversed-phase suspension polymerization. The process comprises the following steps (A) to (C): (A) adding an aqueous solution of water-soluble ethylenically unsaturated monomer to a petroleum hydrocarbon dispersion medium to disperse the aqueous solution in the dispersion medium; (B) adding a surfactant to the emulsion to further disperse the emulsion; and (C) performing the reversed-phase suspension polymerization using a water-soluble radical polymerization initiator, optionally in the presence of an internal-crosslinking agent.

摘要翻译： 本发明的目的是减少吸水性树脂在吸水期间的气味。 通过使水溶性烯属不饱和单体进行反相悬浮聚合，通过吸水性树脂的制造方法实现本发明。 该方法包括以下步骤（A）至（C）：（A）将水溶性烯属不饱和单体的水溶液加入到石油烃分散介质中以将水溶液分散在分散介质中; （B）向乳液中加入表面活性剂以进一步分散乳液; 和（C）任选地在内部交联剂的存在下，使用水溶性自由基聚合引发剂进行反相悬浮聚合。

公开(公告)号：US20090136736A1

公开(公告)日：2009-05-28

申请号：US12354387

申请日：2009-01-15

申请人： YASUHIRO NAWATA ,  Masakazu Yamamori ,  Koji Ueda ,  Hideki Yokoyama ,  Masato Fujikake

发明人： YASUHIRO NAWATA ,  Masakazu Yamamori ,  Koji Ueda ,  Hideki Yokoyama ,  Masato Fujikake

IPC分类号： B32B27/28 ,  C08F251/00 ,  C08F218/08 ,  C08F8/00

CPC分类号： A61F13/531 ,  A61F13/15203 ,  A61L15/60 ,  C08F20/06 ,  Y10T428/249991 ,  Y10T442/2484 ,  Y10T442/699 ,  C08L33/02

摘要： A water-absorbent resin is provided which is suitable for absorbing polymer-containing viscous liquids, wherein the specific surface area measured by the BET multipoint technique using krypton gas as the adsorption gas is no less than 0.05 m2/g, and the water retention capacity for 0.9 wt % physiological saline is 5-30 g/g.

摘要翻译： 提供一种适用于吸收含聚合物的粘性液体的吸水性树脂，其中通过使用氪气作为吸附气体的BET多点技术测量的比表面积不小于0.05m 2 / g，并且保水能力 对于0.9重量％的生理盐水为5-30g / g。

公开(公告)号：US20070239124A1

公开(公告)日：2007-10-11

申请号：US11806772

申请日：2007-06-04

申请人： Masayoshi Handa ,  Yasuhiro Nawata

发明人： Masayoshi Handa ,  Yasuhiro Nawata

IPC分类号： A61F13/15 ,  C08L1/00

CPC分类号： C08K5/005 ,  A61F13/53 ,  C08K3/30

摘要： A water-absorbent resin composition comprising an oxygen-containing reducing inorganic salt and a water-absorbent resin, wherein the iron content in the resin composition is at most 1 ppm; an absorbent having the above-mentioned water-absorbent resin composition and a hydrophilic fiber; and an absorbent article comprising the above-mentioned absorbent interposed between a liquid-permeable sheet and a liquid-impermeable sheet.

摘要翻译： 包含含氧还原性无机盐和吸水性树脂的吸水性树脂组合物，其中所述树脂组合物中的铁含量为至多1ppm; 具有上述吸水性树脂组合物和亲水性纤维的吸收剂; 以及吸收性物品，其包含介于透液性片材和不透液性片材之间的上述吸收剂。

公开(公告)号：US20060194055A1

公开(公告)日：2006-08-31

申请号：US10548595

申请日：2004-03-12

申请人： Kenya Matsuda ,  Yuji Kinpara ,  Tomoki Kawakita ,  Yasuhiro Nawata

发明人： Kenya Matsuda ,  Yuji Kinpara ,  Tomoki Kawakita ,  Yasuhiro Nawata

IPC分类号： B32B5/16 ,  B32B15/02

CPC分类号： C08J3/24 ,  C08F2/14 ,  C08F2/32 ,  C08J2300/14 ,  Y10T428/2982 ,  Y10T428/2991 ,  Y10T428/2998

摘要： A process for producing a water-absorbent resin particle comprising subjecting a water-soluble ethylenically unsaturated monomer to a reverse phase suspension polymerization, characterized in that the process for producing a water-absorbent resin particle comprises the steps of (A) subjecting the water-soluble ethylenically unsaturated monomer to a first-step reverse phase suspension polymerization in a hydrocarbon-based solvent using a water-soluble radical polymerization initiator in the presence of a surfactant and/or a polymeric protective colloid, and optionally an internal crosslinking agent; (B) carrying out at least one step of the procedures of adding an aqueous solution of a water-soluble ethylenically unsaturated monomer containing a water-soluble radical polymerization initiator and optionally an internal crosslinking agent to a reaction mixture after the termination of the first-step reverse phase suspension polymerization in a state that the surfactant and/or the polymeric protective colloid is dissolved in the hydrocarbon-based solvent, and subsequently subjecting the mixture to a reverse phase suspension polymerization; and (C) post-crosslinking the resulting water-absorbent resin.

摘要翻译： 1.一种吸水性树脂粒子的制造方法，其特征在于，使水溶性烯属不饱和单体进行反相悬浮聚合，其特征在于，所述吸水性树脂粒子的制造方法包括以下工序：（A） 在表面活性剂和/或聚合物保护胶体和任选的内部交联剂存在下，使用水溶性自由基聚合引发剂在烃基溶剂中进行第一步反相悬浮聚合; （B）进行至少一个步骤，在第一阶段结束后，向反应混合物中加入含有水溶性自由基聚合引发剂和任选的内部交联剂的水溶性烯属不饱和单体的水溶液， 在表面活性剂和/或聚合物保护胶体溶解在烃系溶剂中，然后使混合物进行反相悬浮聚合的状态下进行步骤反相悬浮聚合; 和（C）使得到的吸水性树脂进行后交联。