公开(公告)号：US4735987A

公开(公告)日：1988-04-05

申请号：US880447

申请日：1986-06-30

申请人： Yasuhiro Morita ,  Takanori Iwamoto ,  Hiroyuki Kataoka ,  Taiji Kambayashi ,  Shigeaki Matsumoto ,  Chuzo Kato

发明人： Yasuhiro Morita ,  Takanori Iwamoto ,  Hiroyuki Kataoka ,  Taiji Kambayashi ,  Shigeaki Matsumoto ,  Chuzo Kato

IPC分类号： A61L15/18 ,  A61L15/60 ,  B01J20/26 ,  C08F20/06 ,  C08F2/00 ,  C08K3/34

CPC分类号： C08F20/06 ,  A61L15/18 ,  A61L15/60 ,  B01J20/26

摘要： This invention provides a method for the manufacture of a high-expansion type absorbent polymer by first causing an absorbent polymer which is obtained by polymerization of a monomer and is possessed of an alkali salt of acrylic acid as a component of polymer to be cross-linked at the time of azeotropic dehydration thereof with a cross-linking agent possessing two or more functional groups in the presence of an inorganic salt and subsequently drying the cross-linked polymer. By the method of this invention, there can be obtained a high-expansion type absorbent material which absorbs water quickly and forms a gel not viscid but permeable to gas. This absorbent material is highly advantageously used as absorbent for sanitary materials free from leaking water and as a water-retaining agent for agricultural applications hardly causing rotton plant roots.

摘要翻译： 本发明提供一种制造高膨胀型吸收性聚合物的方法，首先引入吸收性聚合物，该吸收性聚合物是通过聚合单体得到的，并且具有丙烯酸的碱金属盐作为要交联的聚合物的组分 在与无机盐存在下具有两个或更多个官能团的交联剂共沸脱水时，随后干燥交联聚合物。 通过本发明的方法，可以获得快速吸水的高膨胀型吸收材料，并且形成不粘稠且可渗透气体的凝胶。 该吸收材料非常有利地用作不含水泄漏的卫生材料的吸收剂，并且作为几乎不产生罗氏植物根系的农业用途的保水剂。

公开(公告)号：US5261245A

公开(公告)日：1993-11-16

申请号：US843383

申请日：1992-02-28

申请人： Haruhiko Tanaka ,  Taiji Kambayashi ,  Yasumasa Sugiyama ,  Toshitake Nagai ,  Koiti Nagata ,  Kohei Kubota ,  Kazuo Hirano

发明人： Haruhiko Tanaka ,  Taiji Kambayashi ,  Yasumasa Sugiyama ,  Toshitake Nagai ,  Koiti Nagata ,  Kohei Kubota ,  Kazuo Hirano

IPC分类号： C08F220/04 ,  C08F220/06 ,  C08L33/04 ,  C08L33/06 ,  C09K3/24 ,  F25C3/04 ,  F25C1/00 ,  F25D3/00

CPC分类号： C09K3/24 ,  F25C3/04 ,  F25C2303/044 ,  Y10T428/2998

摘要： A method for easily making an ice slab serving as the foundation of an artificial snow skiing field and artificial snow whose upper layer is powdery by flooding aqueous slurry made by adding water to granular wet water absorbent polymer on a slope of a natural skiing field or a slant or horizontal surface of a natural skiing field or indoor artificial snow skiing field equipped with a cooling system, obtaining the deposit layer of the granular wet water absorbent polymer in which water is separated from the slurry and freezing the deposit layer.