Method for removing arsenic from aqueous systems containing competing
ions
    1.
    发明授权
    Method for removing arsenic from aqueous systems containing competing ions 失效
    从含竞争离子的含水体系中除去砷的方法

    公开(公告)号:US6030537A

    公开(公告)日:2000-02-29

    申请号:US691639

    申请日:1996-08-02

    CPC classification number: C02F1/281 C02F2101/103

    Abstract: Disclosed is a method for removing arsenic from aqueous systems containing arsenic which includes contacting said aqueous system with an adsorbent material comprising (i) activated bauxite and (ii) aluminum trihydrate, until the arsenic is substantially removed from said aqueous system. The adsorbent material is prepared by the steps including (i) mixing powders of activated bauxite and aluminum trihydrate in the presence of water to form granules; (ii) drying said granules; and (iii) calcining said dried granules.

    Abstract translation: 公开了一种从含砷的含水体系中除去砷的方法,该方法包括使所述水系统与包含(i)活化的铝土矿和(ii)三水合铝的吸附材料接触,直到砷基本上从所述水性体系中除去。 吸附剂材料通过以下步骤制备,所述步骤包括:(i)在水的存在下混合活化的铝土矿和三水合铝粉末以形成颗粒; (ii)干燥所述颗粒; 和(iii)煅烧所述干燥颗粒。

    Boilable pouch for foods
    2.
    发明授权
    Boilable pouch for foods 失效
    煮沸的食物袋

    公开(公告)号:US4338365A

    公开(公告)日:1982-07-06

    申请号:US221757

    申请日:1980-12-31

    Inventor: Robert V. Russo

    Abstract: The present invention provides for an economical thermoplastic bag which may be employed to contain foods during storage and, most importantly, may be used to contain such foods during reheating preparatory to serving. The bag structures of the present invention comprise a two layer laminate structure, the inner bag layer, or that surface layer in contact with the foodstuffs, being formed from a thin film of polyester. The outer layer of the bag laminate, or that surface of the bag which comes into direct contact with the cooking or reheating vessel, comprises a polyacrylonitrile homopolymer. The polyacrylonitrile layer, having a melting or sticking temperature on the order of above 210.degree. C. is stable and will not stick to the vessel side walls while foodstuffs are being reheated therein. Obviously the bag containing foodstuffs is intended to be immersed in a fluid such as water during the reheating operation. Accordingly, the present invention provides laminar bags for the storage and containment of foodstuffs which may subsequently be reheated without first removing them from the bag. In a specific embodiment of the present invention, the bag is constructed from a two-ply laminate comprising an inner film layer of polyester and an outer layer of polyacrylonitrile homopolymer film adhered thereto.

    Abstract translation: 本发明提供一种经济的热塑性袋,其可用于在储存期间包含食物,并且最重要的是可以在再加热预备服务期间用于容纳这种食物。 本发明的袋结构包括由聚酯薄膜形成的双层层压结构,内袋层或与食品接触的表层。 袋层压体的外层或与烹饪或再加热容器直接接触的袋的表面包含聚丙烯腈均聚物。 熔点或粘着温度高于210℃的聚丙烯腈层是稳定的,并且不会在食物被再加热的同时粘在容器侧壁上。 显然,在再加热操作期间,含有食物的袋子意图浸入诸如水的流体中。 因此,本发明提供了用于储存和容纳食品的层压袋,其可以随后在不先将其从袋中取出的情况下再加热。 在本发明的一个具体实施方案中,该袋由包括聚酯内膜层和粘附在其上的聚丙烯腈均聚物膜外层的双层叠层构成。

    Composite ion-exchange material, preparation and use thereof
    5.
    发明授权
    Composite ion-exchange material, preparation and use thereof 失效
    复合离子交换材料,其制备及应用

    公开(公告)号:US5277931A

    公开(公告)日:1994-01-11

    申请号:US934084

    申请日:1992-08-21

    CPC classification number: B01J47/007 B01J39/02

    Abstract: Inorganic hydrated metal oxide and metal silicate gels are supported on the surface of particles of porous material by precipitation therein without significant deposit within pores of the support material and without encapsulating the particles of porous material. Especially preferred hydrated oxides and silicate gels are those of titanium. Preferred porous particles are composed of carbon.These novel composite materials are prepared by spraying an aqueous basic material onto the porous particles and then spraying a concentrated aqueous acidic solution of a source of suitable metallic ions so as to rapidly form a gelatinous precipitate on the surface of the porous particles which remain porous.

    Abstract translation: 无机水合金属氧化物和金属硅酸盐凝胶通过沉淀在多孔材料的颗粒的表面上负载,而不会在载体材料的孔隙内沉积,而不包封多孔材料的颗粒。 特别优选的水合氧化物和硅酸盐凝胶是钛的水合氧化物和硅酸盐凝胶。 优选的多孔颗粒由碳组成。 这些新颖的复合材料是通过将水性碱性材料喷涂到多孔颗粒上,然后喷洒合适的金属离子源的浓缩酸性水溶液制备的,以便在保持多孔的多孔颗粒的表面上快速形成凝胶状沉淀。

    Thermoplastic composition containing a poly(methyl ethenyl benzene)
resin and a poly(phenylene oxide) resin
    6.
    发明授权
    Thermoplastic composition containing a poly(methyl ethenyl benzene) resin and a poly(phenylene oxide) resin 失效
    含有聚(甲基乙烯基苯)树脂​​和聚(苯醚)树脂的热塑性组合物

    公开(公告)号:US4480073A

    公开(公告)日:1984-10-30

    申请号:US282627

    申请日:1981-07-13

    Inventor: Robert V. Russo

    CPC classification number: C08L25/16 C08L51/04 C08L71/123 C08L71/12

    Abstract: Thermoplastic blends having superior capability and homogeneity comprising a poly(phenylene oxide) resin and a resin of poly(methyl ethenyl benzene) isomers in which the predominant isomer is 1-methyl-4-ethenyl benzene, are disclosed. The poly(phenylene oxide) resin can contain substituted phenylene units and the poly(methyl ethenyl benzene) resin can be a polymer of solely methyl ethenyl benzene isomers, or a random, block or graft copolymer comprising 50 weight percent or more of methyl ethenyl benzene iosmers and up to 50 weight percent of other ethylenically unsaturated monomers.

    Abstract translation: 公开了具有优异的能力和均匀性的热塑性共混物,其包含聚(苯醚)树脂和其中主要异构体为1-甲基-4-乙烯基苯的聚(甲基乙烯基苯)异构体的树脂。 聚(苯醚)树脂可以含有取代的亚苯基单元,聚(甲基乙烯基苯)树脂​​可以是单独甲基乙烯基苯异构体的聚合物,或包含50重量%或更多的甲基乙烯基苯的无规嵌段或接枝共聚物 iosmers和高达50重量%的其他烯属不饱和单体。

    Compositions comprising a poly(methyl ethenyl benzene) resin and mineral
oil
    7.
    发明授权
    Compositions comprising a poly(methyl ethenyl benzene) resin and mineral oil 失效
    包含聚(甲基乙烯基苯)树脂​​和矿物油的组合物

    公开(公告)号:US4447575A

    公开(公告)日:1984-05-08

    申请号:US430157

    申请日:1982-09-30

    Inventor: Robert V. Russo

    CPC classification number: C08L25/16

    Abstract: Blends of a preformed poly(methyl ethenyl benzene) polymer or copolymer derived from an isomers of methyl ethenyl benzenes in which 1-methyl-4-ethenyl benzene is the predominant isomers, and up to about 10 weight percent of mineral oil are disclosed.

    Abstract translation: 公开了预制的聚(甲基乙烯基苯)聚合物或衍生自甲基乙烯基苯的异构体的共聚物,其中1-甲基-4-乙烯基苯是主要的异构体,最高达约10重量%的矿物油。

    Oxidative stability of flexible polyurethane foams
    10.
    发明授权
    Oxidative stability of flexible polyurethane foams 失效
    柔性聚氨酯泡沫的氧化稳定性

    公开(公告)号:US4043949A

    公开(公告)日:1977-08-23

    申请号:US556011

    申请日:1975-03-06

    CPC classification number: C08G18/242

    Abstract: Cellular polyurethane exhibiting excellent thermal and oxidative stability can be prepared using specified methyl-, allyl-, phenyl- or benzyltin compounds as the polymerization catalyst. These catalysts are hydrolytically stable over extended periods of time, and can therefore be incorporated into precursors or masterbatches for polyurethanes that contain water as the foaming agent.

    Abstract translation: 可以使用特定的甲基 - ,烯丙基 - ,苯基 - 或苄基锡化合物作为聚合催化剂来制备表现出优异的热和氧化稳定性的细胞聚氨酯。 这些催化剂在延长的时间段内是水解稳定的,因此可以加入含有水作为发泡剂的聚氨酯的前体或母料中。

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