公开(公告)号：US08044157B2

公开(公告)日：2011-10-25

申请号：US12530976

申请日：2008-03-14

申请人： Kazushi Torii ,  Taishi Kobayashi

发明人： Kazushi Torii ,  Taishi Kobayashi

IPC分类号： C08F120/06

CPC分类号： C08J3/245 ,  B01J20/267 ,  C08F20/06 ,  C08J2333/02 ,  C08L33/02 ,  C08L71/02 ,  C08L2666/22

摘要： A method for producing a water absorbent resin comprises the steps of: (i) polymerizing a monomer including an unsaturated monomer containing a carboxyl group, in the presence of an internal cross-linking agent (A) having two or more radical polymerizable unsaturated groups in its single molecule and in the presence of a non-polymeric internal cross-linking agent (B) having in its single molecule two or more functional groups each of which allows formation of an ester bond or an amide bond by reacting with a carboxyl group so as to obtain a cross-linked polymer hydrogel; (ii) crushing the cross-linked polymer hydrogel obtained in the step (i); and (iii) drying crushed cross-linked polymer hydrogel products obtained in the step (ii), wherein: an amount of the internal cross-linking agent (A) is 0.01 mol % or more and 0.2 mol % or less relative to an amount of the unsaturated monomer containing a carboxyl group, and a molar ratio (B)/(A) of the internal cross-linking agent (A) and the non-polymeric internal cross-linking agent (B) is 0.01 or more and 1.8 or less.

摘要翻译： 一种吸水性树脂的制造方法，其特征在于：（i）在含有两个以上自由基聚合性不饱和基团的内部交联剂（A）的存在下，使含有羧基的不饱和单体的单体聚合， 其单分子和在其单分子中具有两个或多个官能团的非聚合内部交联剂（B）的存在下，每个可通过与羧基反应形成酯键或酰胺键，因此 获得交联聚合物水凝胶; （ii）粉碎步骤（i）中获得的交联聚合物水凝胶; 和（iii）干燥步骤（ii）中获得的粉碎的交联聚合物水凝胶产物，其中：内部交联剂（A）的量相对于一定量的0.01mol％以上且0.2mol％以下 的含有羧基的不饱和单体，内部交联剂（A）与非聚合内部交联剂（B）的摩尔比（B）/（A）为0.01以上1.8以下 减。

公开(公告)号：US20110114881A1

公开(公告)日：2011-05-19

申请号：US12674780

申请日：2008-09-26

申请人： Kazushi Torii ,  Taishi Kobayashi ,  Yoshifumi Adachi ,  Yusuke Watanabe ,  Toshimasa Kitayama

发明人： Kazushi Torii ,  Taishi Kobayashi ,  Yoshifumi Adachi ,  Yusuke Watanabe ,  Toshimasa Kitayama

IPC分类号： B01J20/26

CPC分类号： A61L15/60 ,  B01J20/26 ,  B01J20/267 ,  C08K5/09

摘要： The present invention provides a water absorbing agent, and a method for producing the water absorbing agent. The water absorbing agent includes water absorbent resin particles, an organic acid and/or salt thereof having carbon number of 10 or more and not more than 30 in its molecule, and a water-soluble polyvalent cation. The method includes the step (i) of mixing the water absorbent resin particles, the organic acid and/or salt thereof having carbon number of 10 or more and not more than 30 in its molecule, and the water-soluble polyvalent cation with one another.

摘要翻译： 本发明提供一种吸水剂及其制造方法。 吸水剂包括分子中碳数为10以上且30以下的吸水性树脂粒子，有机酸和/或其盐和水溶性多价阳离子。 该方法包括在其分子中混合吸水性树脂颗粒，碳数为10以上至30以下的有机酸和/或其盐和水溶性多价阳离子之间的步骤（i） 。

公开(公告)号：US20070078231A1

公开(公告)日：2007-04-05

申请号：US11540478

申请日：2006-09-28

申请人： Hirofumi Shibata ,  Kazushi Torii

发明人： Hirofumi Shibata ,  Kazushi Torii

IPC分类号： C08F20/02

CPC分类号： C08K5/14 ,  A61L15/24 ,  A61L15/60 ,  B01J20/26 ,  B01J20/261 ,  B01J20/264 ,  B01J20/267 ,  B01J20/28004 ,  B01J20/28016 ,  B01J20/28033 ,  B01J20/30 ,  B01J2220/68 ,  C08F6/006 ,  C08F220/06 ,  C08F222/1006 ,  C08J3/245 ,  C08J3/28 ,  C08J2300/14 ,  C08K5/053

摘要： The present invention provides a method for manufacturing a particulate water-absorbing agent which has excellent liquid diffusibility and liquid permeability, and whose amount of residual monomers is reduced. The method for manufacturing the particulate water-absorbing agent of the present invention includes a step of surface-crosslinking, in the presence of an organic crosslinking agent, water-absorbing resin particles obtained through at least a step of polymerizing an aqueous solution of unsaturated monomers, and in or after the polymerizing step, a reaction system is mixed with peroxide. Thus, it is possible to obtain the particulate water-absorbing agent which has excellent liquid diffusibility and liquid permeability and whose amount of residual monomers is small, that is, it is possible to obtain the particulate water-absorbing agent which is highly functional and highly safe.

摘要翻译： 本发明提供一种具有优异的液体扩散性和液体渗透性并且其残余单体的量减少的颗粒状吸水剂的制造方法。 本发明的颗粒状吸水剂的制造方法包括在有机交联剂的存在下进行表面交联的工序，所述吸水性树脂粒子至少通过聚合不饱和单体的水溶液 ，并且在聚合步骤中或之后，将反应体系与过氧化物混合。 因此，可以获得具有优异的液体扩散性和液体渗透性并且其残留单体的量小的颗粒状吸水剂，即可以获得高度功能性和高度的颗粒状吸水剂 安全。

公开(公告)号：US20060229413A1

公开(公告)日：2006-10-12

申请号：US11449656

申请日：2006-06-09

申请人： Kazushi Torii ,  Toshimasa Kitayama ,  Nobuyuki Harada

发明人： Kazushi Torii ,  Toshimasa Kitayama ,  Nobuyuki Harada

IPC分类号： C08L77/00

CPC分类号： A61F13/531 ,  A61F2013/530708 ,  A61F2013/530788 ,  A61L15/24 ,  A61L15/60 ,  B01J20/26 ,  B01J20/261 ,  B01J20/267 ,  B01J2220/68 ,  C08L33/02 ,  C08L3/02

摘要： The present invention provides: a novel water-absorbing agent, which exhibits an excellent absorption capacity under a load (AAP), gel layer liquid permeation rate under a load (FRUP), saline flow conductivity (SFC), and shape-maintaining property and ball burst strength (BBS) of a swollen water-absorbing agent aggregate, and excellent persistency of these effects for a long time. The water-absorbing agent, which comprises a polymer obtained by a process including the steps of polymerizing and then crosslinking a monomer including acrylic acid and/or a salt thereof, with the water-absorbing agent being characterized by: (1) exhibiting a free swelling capacity of not less than 23 g/g (GV), a gel deformation of not more than 12.5 cm under a short-time load (0.5 hrPT), and a gel deformation deterioration of not more than 3.5 cm under a load with the passage of time (ΔPT); (2) exhibiting a free swelling capacity of not less than 23 g/g (GV), a ball burst strength of not less than 80 gf (BBS), and a deterioration of ball burst strength of not more than 40% (DBBS); or (3) exhibiting a free swelling capacity of not less than 23 g/g (GV), an absorption capacity of not less than 20 g/g under a load of 4.9 kPa (AAP), and a gel deformation of not more than 12.5 cm under a load (16 hrPT).

摘要翻译： 本发明提供：在负荷（AAP），载荷下的凝胶层液体渗透速率（FRUP），盐水导电率（SFC）和形状维持性等方面表现出优异的吸收容量的新型吸水剂， 膨胀吸水剂聚集体的球破裂强度（BBS），长时间保持这些效果的持久性。 包含通过包括使包含丙烯酸和/或其盐在内的单体聚合然后将其与所述吸水剂交联的方法获得的聚合物的吸水剂的特征在于：（1） 溶胀能力不小于23g / g（GV），在短时间负荷（0.5hrPT）下凝胶变形不超过12.5cm，凝胶变形劣化不大于3.5cm， 时间流逝（DeltaPT）; （2）表现出不小于23g / g（GV）的游离膨胀能力，不高于80gf（BBS）的球破裂强度和不大于40％的球爆裂强度的劣化（DBBS） ; 或（3）在4.9kPa（AAP）的载荷下表现出不小于23g / g（GV）的游离溶胀能力，不低于20g / g的吸收能力，凝胶变形不大于 负荷为12.5厘米（16小时）。

公开(公告)号：US07098284B2

公开(公告)日：2006-08-29

申请号：US10053659

申请日：2002-01-24

申请人： Kazushi Torii ,  Toshimasa Kitayama ,  Nobuyuki Harada

发明人： Kazushi Torii ,  Toshimasa Kitayama ,  Nobuyuki Harada

IPC分类号： C08F2/10

CPC分类号： A61F13/531 ,  A61F2013/530708 ,  A61F2013/530788 ,  A61L15/24 ,  A61L15/60 ,  B01J20/26 ,  B01J20/261 ,  B01J20/267 ,  B01J2220/68 ,  C08L33/02 ,  C08L3/02

摘要： The present invention provides: a novel water-absorbing agent, which exhibits an excellent absorption capacity under a load (AAP), gel layer liquid permeation rate under a load (FRUP), saline flow conductivity (SFC), and shape-maintaining property and ball burst strength (BBS) of a swollen water-absorbing agent aggregate, and excellent persistency of these effects for a long time. The water-absorbing agent, which comprises a polymer obtained by a process including the steps of polymerizing and then crosslinking a monomer including acrylic acid and/or a salt thereof, with the water-absorbing agent being characterized by: (1) exhibiting a free swelling capacity of not less than 23 g/g (GV), a gel deformation of not more than 12.5 cm under a short-time load (0.5 hrPT), and a gel deformation deterioration of not more than 3.5 cm under a load with the passage of time (ΔPT); (2) exhibiting a free swelling capacity of not less than 23 g/g (GV), a ball burst strength of not less than 80 gf (BBS), and a deterioration of ball burst strength of not more than 40% (DBBS); or (3) exhibiting a free swelling capacity of not less than 23 g/g (GV), an absorption capacity of not less than 20 g/g under a load of 4.9 kPa (AAP), and a gel deformation of not more than 12.5 cm under a load (16 hrPT).