Particulate water absorbent containing water absorbent resin as a main component
    71.
    发明授权
    Particulate water absorbent containing water absorbent resin as a main component 有权
    含吸水性树脂的颗粒吸水剂为主要成分

    公开(公告)号:US07435477B2

    公开(公告)日:2008-10-14

    申请号:US10509000

    申请日:2004-02-09

    IPC分类号: B32B5/16

    摘要: A particulate water absorbent contains a water absorbent resin as a main component, the water absorbent resin being a crosslinked polymer of a water-soluble unsaturated monomer. The water absorbent resin is particular in shape and contains particles of a particle size in a range of not less than 106 μm and less than 850 μm in an amount of not less than 90 mass percent with respect to the total mass of the water absorbent resin contained in the particulate water absorbent. The particulate water absorbent has a first salt concentration absorption index of not less than 0.60 as measured by a formula below when ion exchange water is used as an aqueous solution of a constant salt concentration: (salt concentration absorption index)=(absorbency against a pressure of 4.83 kPa with respect to the aqueous solution of a constant salt concentration)/(absorbency against no pressure with respect to the aqueous solution of a constant salt concentration).

    摘要翻译: 颗粒状吸水剂含有吸水性树脂作为主要成分,吸水性树脂为水溶性不饱和单体的交联聚合物。 吸水性树脂特别是形状,并且相对于吸水性树脂的总质量,其粒径在不小于106μm和小于850μm的范围内,其量不小于90质量% 包含在颗粒状吸水剂中。 当使用离子交换水作为恒盐浓度的水溶液时,颗粒状吸水剂的第一盐浓度吸收指数为不低于0.60;(盐浓度吸收指数)=(吸收压力 相对于恒盐浓度的水溶液为4.83kPa)/(相对于恒盐浓度的水溶液的无压吸收性)。

    Preparation of (polycyclic secondary-amino)dialkoxysilane
    74.
    发明授权
    Preparation of (polycyclic secondary-amino)dialkoxysilane 失效
    (多环仲氨基)二烷氧基硅烷的制备

    公开(公告)号:US06337416B2

    公开(公告)日:2002-01-08

    申请号:US09879280

    申请日:2001-06-12

    IPC分类号: C07F708

    CPC分类号: C07F7/126 C07F7/025 C07F7/188

    摘要: A (polycyclic secondary-amino)dialkoxysilane favorably employable as a catalyst for polymerization of &agr;-olefin can be prepared by reacting tetrachlorosilane, or a mono(C1-C8)alkyltrichlorosilane with a polycyclic secondary-amine in a non-hydrous, non-alcoholic organic solvent in the presence of a hydrogen chloride-trapping reagent, to produce a (polycyclic secondary-amino)chlorosilane and reacting the (polycyclic secondary-amino)chlorosilane with an alkali metal alkoxide or an alkaline earth metal alkoxide in the presence of a lower alcohol.

    摘要翻译: 优选可用作α-烯烃聚合催化剂的(多环仲氨基)二烷氧基硅烷可以通过使四氯硅烷或单(C 1 -C 8)烷基三氯硅烷与非水合非醇的多环仲胺反应来制备 有机溶剂在氯化氢捕获试剂的存在下反应,生成(多环仲氨基)氯代硅烷,并使(多环仲氨基)氯硅烷与碱金属醇盐或碱土金属醇盐在较低的存在下反应 醇。

    Process for producing polymer
    75.
    发明授权
    Process for producing polymer 失效
    生产聚合物的方法

    公开(公告)号:US5391664A

    公开(公告)日:1995-02-21

    申请号:US115009

    申请日:1993-09-01

    IPC分类号: C08F2/06 C08F2/44 C08F4/32

    CPC分类号: C08F4/32

    摘要: This invention provides a process by which a polymer having a hydroxyl group at both terminals can be easily obtained with a cheap price and good efficiency from a wide field of vinyl-based monomers including polar ones. The process is arranged in such a manner that the polymerization of a vinyl-based monomer (a) is performed in the presence of an alcohol (b) having no addition-polymerization reactivity by using an initiator (c) consisting essentially of a peroxide and, on this occasion, at least one of catalysts (d) selected from a group consisting of an organic sulfonic acid compound having no addition-polymerization reactivity and an inorganic acid is further used and a reactor does not substantially contain any component other than the (a), (b), (c) and (d).

    摘要翻译: 本发明提供了一种方法,通过该方法可以从包括极性的乙烯基类单体的广泛领域以便宜的价格和良好的效率容易地获得两端具有羟基的聚合物。 该方法以乙烯基类单体(a)的聚合方式通过使用基本上由过氧化物组成的引发剂(c)在不具有加聚反应性的醇(b)的存在下进行, 在这种情况下,进一步使用选自不具有加聚反应性的有机磺酸化合物和无机酸的催化剂(d)中的至少一种,并且反应器基本上不含除( a),(b),(c)和(d)。