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71. 发明授权

US6110992A Water-absorbing agent and production process therefor 有权
公开(公告)号：US6110992A
公开(公告)日：2000-08-29
申请号：US272090
申请日：1999-03-18
申请人： Katsuyuki Wada , Kinya Nagasuna
发明人： Katsuyuki Wada , Kinya Nagasuna
IPC分类号： A61L15/60 , C08F8/00 , C08K9/00 , C08L83/00
CPC分类号： A61L15/60 , C08F8/00 , C08F2800/20 , C08F2810/20
摘要： The invention provides a water-absorbing agent, which has high absorption capacity and excellent absorption efficiency under increased pressure and can display excellent water absorption properties when used for sanitary materials even if the resin concentration of a water-absorbent resin is high. The water-absorbing agent has an absorption capacity of 30 (g/g) or more and the below-defined absorption efficiency of 0.7 or more under increased pressure. This agent can be obtained by heating in the presence of a surface-crosslinking agent a water-absorbent resin having an absorption capacity of 40 (g/g) or more and an amount of an eluting component of 1 wt % or less relative to the water-absorbent resin, or by: polymerizing a water-absorbent resin in the presence of a chain transfer agent; treating the polymerized resin with a hydrophilic solution; and heating the treated resin in the presence of a surface-crosslinking agent. ##EQU1##

72. 发明授权

US5559160A Liquid absorbable material and method for production thereof 失效
标题翻译：液体吸收材料及其制造方法
公开(公告)号：US5559160A
公开(公告)日：1996-09-24
申请号：US234416
申请日：1994-04-28
申请人： Nobuyuki Harada , Katsuyuki Wada , Hisanori Obara , Toru Inaoka
发明人： Nobuyuki Harada , Katsuyuki Wada , Hisanori Obara , Toru Inaoka
IPC分类号： B01J20/26 , B01J20/28 , C08F2/32 , C08J9/28
CPC分类号： B01J20/26
摘要： The disclosure is a liquid absorbable material comprising a porous formed article possessed of partitioning walls of a cross-linked polymer and continued micropores, characterized in that said material has a density in the range of 0.2 to 1.0 g/cm.sup.3, and (a) that said partitioning walls exhibit a swelling degree to kerosine in the range of 2 to 10, and that said material has an absorption capacity per unit volume, the capacity being at least 4 cm.sup.3 /cm.sup.3 for water, ethanol, toluene and kerosine, respectively, or (b) that said material has an absorption capacity per unit weight, the capacity being at least 10 g/g for water, ethanol, toluene and kerosine, respectively, the liquids being at a temperature not less than the softening point of the cross-linked polymer. The liquid absorbable material can absorb liquids such as water and petroleum quickly and expand with the absorbed liquid.
摘要翻译：本发明是一种液体可吸收材料，其包括具有交联聚合物和连续微孔的分隔壁的多孔成形制品，其特征在于所述材料的密度在0.2至1.0g / cm 3的范围内，和（a）所述分隔壁表现出2至10范围内的煤油的膨胀度，并且所述材料分别具有每单位体积的吸收能力，对于水，乙醇，甲苯和煤油，容量至少为4cm 3 / cm 3，或（b）所述材料具有每单位重量的吸收能力，分别为水，乙醇，甲苯和煤油的容量至少为10g / g，液体的温度不低于交联剂的软化点，连接聚合物。液体吸收材料可以快速吸收水和石油等液体，并与吸收的液体一起膨胀。

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