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30 条记录 (耗时 0.019 秒)

    Method for treating the surface of an absorbent resin
    2.
    发明授权
    Method for treating the surface of an absorbent resin 失效
    用于处理吸收树脂表面的方法

    公开(公告)号：US5164459A

    公开(公告)日：1992-11-17

    申请号：US502735

    申请日：1990-04-02

    申请人： Kazumasa Kimura ,  Takumi Hatsuda ,  Kinya Nagasuna

    发明人： Kazumasa Kimura ,  Takumi Hatsuda ,  Kinya Nagasuna

    IPC分类号： A61L15/00 ,  A61L15/60 ,  C08F8/14 ,  C08J3/00 ,  C08J3/12 ,  C08J3/24 ,  C08K3/00 ,  C08L101/00

    CPC分类号： C08J3/12 ,  A61L15/60 ,  C08F8/14 ,  C08F2810/20 ,  C08J2300/14

    摘要： A method for treating the surface of an absorbent resin which comprises mixing (I) 100 parts by weight of an absorbent resin powder having a carboxyl group, (II) 0.01 to 30 parts by weight of a polyhydric alcohol, (III) 0 to 50 parts by weight of water and (IV) 0 to 60 parts by weight of a hydrophilic organic solvent, and heat-treating at a temperature in the range of 90.degree. to 250.degree. C. to treat the surface of said absorbent resin powder (I) until the reaction of said absorbent resin powder (I) with said polyhydric alcohol (II) is completed, wherein the time for completion of the reaction is the time that satisfies the following equation (a-1):30.ltoreq.(100+C)B/A.ltoreq.80 (a-1)wherein A is absorption capacity of said absorbent resin powder (I) for physiological saline solution, B is the absorption capacity of the resultant treated absorbent resin for physiological saline solution, and C is parts by weight of said polyhydric alcohol (II) used per 100 parts by weight of said absorbent resin powder (I).

    Method for production of absorbent resin excelling in durability
    4.
    发明授权
    Method for production of absorbent resin excelling in durability 失效
    制造耐用性优异的吸水性树脂的方法

    公开(公告)号：US06335406B1

    公开(公告)日：2002-01-01

    申请号：US08026167

    申请日：1993-03-01

    申请人： Kinya Nagasuna ,  Kenji Kadonaga ,  Kazumasa Kimura ,  Tadao Shimomura

    发明人： Kinya Nagasuna ,  Kenji Kadonaga ,  Kazumasa Kimura ,  Tadao Shimomura

    IPC分类号： C08F200

    CPC分类号： C08F220/04

    摘要： A method for the production of (D) an absorbent resin excelling in durability, which method comprises polymerizing (A) 30% by weight to saturated concentration of (A) an aqueous water-soluble ethylenically unsaturated monomer solution containing (B) 0.005 to 5 mol % of a cross-linking agent and (C) 0.001 to 1 mol % of a water-soluble chain transfer agent, both based on the amount of said monomer (A), and if necessary, the surface region of the resultant absorbent resin (D) is cross-linked with (E) a hydrophilic cross-linking agent capable of reacting with the functional group of the absorbent resin and an absorbent resin obtained by such method.

    摘要翻译： 一种制备（D）耐久性优异的吸水树脂的方法，该方法包括将（A）含有（B）0.005-5的（A）水溶性烯属不饱和单体溶液的饱和浓度为30重量％的（A） 摩尔％的交联剂和（C）0.001〜1摩尔％的水溶性链转移剂，均基于所述单体（A）的量，如果需要，所得吸收性树脂的表面积 （D）与（E）能够与吸收性树脂的官能团反应的亲水性交联剂和通过这种方法得到的吸收性树脂交联。

    Water-absorbent resin and production process
    6.
    发明授权
    Water-absorbent resin and production process 失效
    吸水树脂及生产工艺

    公开(公告)号：US5244735A

    公开(公告)日：1993-09-14

    申请号：US989722

    申请日：1992-12-11

    申请人： Kazumasa Kimura ,  Kinya Nagasuna ,  Takashi Namba ,  Kenji Kadonaga ,  Koji Miyake ,  Tadao Shimomura

    发明人： Kazumasa Kimura ,  Kinya Nagasuna ,  Takashi Namba ,  Kenji Kadonaga ,  Koji Miyake ,  Tadao Shimomura

    IPC分类号： C08F2/32

    CPC分类号： C08F2/32 ,  Y10T428/2982

    摘要： Water-absorbent resins having an average particle diameter of 100 to 600 .mu.m and a particle diameter distribution of 0.35 or less are prepared by polymerizing an aqueous solution of a water-soluble ethylenically unsaturated monomer, pulverizing and sieving the gel-like polymer so obtained, and crosslinking the surface of the polymer powder. In an alternative process, an aqueous solution of the monomer having a viscosity greater than 15 cps is dispersed in a hydrophobic organic solvent and polymerized to obtain a polymer powder, and the surface of the polymer powder is crosslinked.

    摘要翻译： 平均粒径为100〜600μm，粒径分布为0.35以下的吸水性树脂通过使水溶性烯键式不饱和单体的水溶液聚合而制得，将得到的凝胶状聚合物粉碎并筛分 并交联聚合物粉末的表面。 在另一种方法中，将粘度大于15cps的单体的水溶液分散在疏水性有机溶剂中并进行聚合以获得聚合物粉末，并且聚合物粉末的表面是交联的。

    Production process for water-absorbent resin
    7.
    发明授权
    Production process for water-absorbent resin 失效
    吸水树脂的生产工艺

    公开(公告)号：US4973632A

    公开(公告)日：1990-11-27

    申请号：US371174

    申请日：1989-06-26

    申请人： Kinya Nagasuna ,  Takashi Namba ,  Koji Miyake ,  Kazumasa Kimura ,  Tadao Shimomura

    发明人： Kinya Nagasuna ,  Takashi Namba ,  Koji Miyake ,  Kazumasa Kimura ,  Tadao Shimomura

    IPC分类号： C08F220/06 ,  A61L15/24 ,  C08F2/08 ,  C08F2/32

    CPC分类号： C08F2/32

    摘要： This invention relates to a water-absorbent resin of a new, novel type obtained from polymerization of water-soluble ethylenically unsaturated monomer and a process for producing this resin.The water-absorbent resin in this invention has average particle diameter in a specially defined range and a narrow range of particle distribution, being superior in water-absorption capacity, and also, being superior in handling properties in a point of that, when being mixed with liquid, formation of a fish-eye is absent. The water-absorbent resin shows an angle-lacking, non-sphere shape and, in a case of shape like this, is superior in handling properties in a point that being hard in falling off from an basis material.Although the production process is performed to get a water-absorbent resin by carrying out polymerization in a reverse-phase suspension polymerization method, since the aqueous monomer solution is chosen from a specially defined viscosity range and dispersed and suspended by using a specially defined dispersing agent, a water-absorbent resin is easily obtainable wherein, not only the average particle diameter is controlled by adjusting the viscosity of an aqueous monomer solution, but also the particle diameter distribution is narrow. The water-absorbent resin obtained shows that a water-soluble component is small, so that it is very good for sanitary reasons. In this method, it is possible to vary the particle shape by changing up and down the viscosity of an aqueous monomer solution in an above-described specially defined range.The water-absorbent resin in this invention, because of having the above-described properties, is preferably used for sanitary materials and the like.

    Water absorbing agent
    9.
    发明授权
    Water absorbing agent 失效
    吸水剂

    公开(公告)号：US4734478A

    公开(公告)日：1988-03-29

    申请号：US748820

    申请日：1985-06-26

    申请人： Tsuneo Tsubakimoto ,  Tadao Shimomura ,  Yoshio Irie ,  Yoshihiko Masuda ,  Kazumasa Kimura ,  Takumi Hatsuda

    发明人： Tsuneo Tsubakimoto ,  Tadao Shimomura ,  Yoshio Irie ,  Yoshihiko Masuda ,  Kazumasa Kimura ,  Takumi Hatsuda

    IPC分类号： A61L15/18 ,  A61L15/60 ,  B01J20/26 ,  C08F8/14 ,  C08J3/12 ,  C08J3/24 ,  D21H17/28 ,  D21H17/43

    CPC分类号： C08J3/12 ,  A61L15/18 ,  A61L15/60 ,  B01J20/26 ,  C08F8/14 ,  D21H17/28 ,  D21H17/43 ,  C08F2810/20 ,  C08J2300/14

    摘要： The invention provides [I] a water-absorbing agent composed of a water-absorbing resin powder having the molecular chains near its surface being crosslinked, said powder being obtained by mixing 100 parts by weight of a powder of a carboxyl-containing water-absorbing resin selected from the group consisting of a hydrolyzate of a starch-acrylonitrile graft polymer, a partially neutralized product of a starch-acrylic acid graft polymer, a saponification product of a vinyl acetate-acrylic ester copolymer, a hydrolyzate of an acrylonitrile copolymer, a crosslinked product of a hydrolyzate of an acrylonitrile copolymer, a hydrolyzate of an acrylamide copolymer, a crosslinked product of a hydrolyzate of an acrylamide copolymer, a partially neutralized product of polyacrylic acid, and a crosslinked product of partially neutralized polyacrylic acid with 0.001 to 10 parts by weight of a polyhydric alcohol, 0.01 to 8 parts by weight of a hydrophilic organic solvent and 0 to 8 parts by weight of water, and heating the mixture at a temperature of at least 90.degree. C. to react the water-absorbing resin powder with the polyhydric alcohol; [II] a water-absorbing agent composed of a mixture of the water-absorbing agent [I] with finely divided silica; [III] a water-absorbing agent obtained by pulverizing and granulating a mixture of the water-absorbing agent [I] with an aqueous liquid; and [IV] a water-absorbing agent composed of a mixture of the water-absorbing agent [III] with finely divided silica.

    摘要翻译： 本发明提供[I]一种由其表面附近的分子链交联的吸水性树脂粉末组成的吸水剂，所述粉末是通过将100重量份的含羧基的吸水性粉末 选自淀粉 - 丙烯腈接枝聚合物的水解产物，淀粉 - 丙烯酸接枝聚合物的部分中和产物，乙酸乙烯酯 - 丙烯酸酯共聚物的皂化产物，丙烯腈共聚物的水解产物， 丙烯腈共聚物的水解产物，丙烯酰胺共聚物的水解产物，丙烯酰胺共聚物的水解产物的交联产物，聚丙烯酸的部分中和产物和部分中和的聚丙烯酸的交联产物与0.001至10份的交联产物 的多元醇，0.01〜8重量份的亲水性有机溶剂和0〜8重量份的 水，并在至少90℃的温度下加热混合物以使吸水性树脂粉末与多元醇反应; [II]由吸水剂[I]与细碎二氧化硅的混合物组成的吸水剂; [III]通过将吸水剂[I]与水性液体的混合物粉碎和造粒得到的吸水剂; 和[IV]由吸水剂[III]与细碎二氧化硅的混合物组成的吸水剂。