Agent and method for deoiling sand and rock masses
    41.
    发明授权
    Agent and method for deoiling sand and rock masses 失效
    脱砂砂岩的代理和方法

    公开(公告)号:US4451631A

    公开(公告)日:1984-05-29

    申请号:US422277

    申请日:1982-09-23

    摘要: Sand or rock masses containing mineral oil are deoiled with a deoiling agent containing an aqueous solution of a water-soluble copolymer which is a random distribution of 5 to 60% of weight of units of the formula ##STR1## 2 to 40% by weight of units of the formula ##STR2## and 38 to 93% by weight of units of the formula ##STR3## and partial hydrolysates thereof, wherein when R.sup.1 is hydrogen, R.sup.2 is hydrogen, methyl or ethyl, Y is --CO--NH--C(CH.sub.3).sub.2 --CH.sub.2 -- or a direct bond, and X.sup..sym. is a cation; when R.sup.1 and R.sup.2 are identical or different, each is hydrogen, methyl, ethyl or, together are trimethylene, Y is --CO--NH--C(CH.sub.3).sub.2 --CH.sub.2 -- and X.sup..sym. is cation.

    摘要翻译: 含有矿物油的砂或岩块与含有水溶性共聚物的水溶液的除油剂一起脱水,水溶性共聚物的水溶液是无规分布为5至60重量%的式 式“IMAGE”的单元和38至93重量%的式“IMAGE”的单元和其部分水解产物,其中当R 1是氢时,R 2是氢,甲基或乙基,Y是-CO-NH-C( CH 3)2 -CH 2 - 或直接键,X(+)是阳离子; 当R 1和R 2相同或不同时,各自为氢,甲基,乙基,或一起为三亚甲基,Y为-CO-NH-C(CH 3)2 -CH 2 - 且X(+)为阳离子。

    Hydrogels absorbing aqueous fluids
    47.
    发明授权
    Hydrogels absorbing aqueous fluids 有权
    吸水剂的水凝胶

    公开(公告)号:US08552071B1

    公开(公告)日:2013-10-08

    申请号:US09831915

    申请日:1999-11-18

    摘要: The invention relates to hydrogels capable of absorbing aqueous fluids, which hydrogels are produced by polymerization of olefinically unsaturated carboxylic acids or their derivatives. The hydrogels are characterized in that before, during or after the polymerization reaction and before drying a silicic acid alkali salt of the general formula (I) M2O×nSiO2 is added to the polymerization reaction mixture. In said formula M is an alkali metal and n is a number between 0.5 and 4. The hydrogel obtained in this way is then dried at an elevated temperature. The invention also relates to a method for producing said hydrogels and to their use for absorbing aqueous fluids.

    摘要翻译: 本发明涉及能够吸收含水流体的水凝胶,该水凝胶是通过烯属不饱和羧酸或其衍生物的聚合制备的。 水凝胶的特征在于,在聚合反应之前,之中或之后,在干燥之前,将通式(I)的M 2 O x nSiO 2的硅酸碱金属盐加入到聚合反应混合物中。 在所述式中,M是碱金属,n是0.5-4之间的数。然后在升高的温度下将这样得到的水凝胶干燥。 本发明还涉及一种生产所述水凝胶的方法及其用于吸收含水流体的用途。

    Stabilized aqueous polymer compositions
    49.
    发明申请
    Stabilized aqueous polymer compositions 有权
    稳定的含水聚合物组合物

    公开(公告)号:US20090192055A1

    公开(公告)日:2009-07-30

    申请号:US12321552

    申请日:2009-01-22

    IPC分类号: C09K8/68

    CPC分类号: C09K8/685 C08K5/0091 C08K5/46

    摘要: The aqueous polymer composition comprises a water soluble polymer having a molar weight of at least 104 Daltons and comprising functional groups which may form complexes with metal ions. The aqueous polymer compositions of this invention are stabilized against thermal or other degradation processes by addition of a phenothiazine compound to allow their use even under harsh conditions.

    摘要翻译: 含水聚合物组合物包含摩尔重量至少为104道尔顿的水溶性聚合物,并且包含可与金属离子形成络合物的官能团。 本发明的水性聚合物组合物通过加入吩噻嗪化合物来稳定,防止热或其它降解过程,以使其即使在恶劣条件下也能使用。