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    Flocculation processes
    2.
    发明授权
    Flocculation processes 失效
    絮凝过程

    公开(公告)号：US4720346A

    公开(公告)日：1988-01-19

    申请号：US855509

    申请日：1986-04-23

    申请人： Peter Flesher ,  David Farrar ,  John R. Field

    发明人： Peter Flesher ,  David Farrar ,  John R. Field

    IPC分类号： B01D21/01 ,  C02F1/52 ,  C02F1/54 ,  C02F1/56 ,  D21H17/37 ,  D21H17/43 ,  D21H17/45 ,  D21H21/10

    CPC分类号： C02F1/54 ,  C02F1/52 ,  C02F1/5227 ,  D21H21/10 ,  D21H17/37 ,  D21H17/43 ,  D21H17/455 ,  Y10S524/922

    摘要： When flocculating an aqueous suspension of suspended solids using a high molecular weight synthetic polymeric flocculant, the shear stability of the flocs is increased if the polymeric material includes polymeric particles of below 10 .mu.m dry size. The flocculated solids can therefore be subjected to shear without increasing the amount of discrete suspended solids in the aqueous medium and generally they are subjected to shear by shearing the aqueous medium containing them, either before dewatering, generally on a centrifuge, piston press or belt press, or by continuously agitating them, for instance in a chemical reaction medium. The polymeric material is generally formed by mixing into water polymeric particles made by reverse phase or emulsion polymerization in the presence of added cross linking agent. Alternatively, particles insolubilized by insoluble monomer may be used. A reverse phase dispersion of water soluble polymer may be used if the particles remain undissolved, e.g. if they are added in the absence of an oil in water emulsifying agent.

    摘要翻译： 当使用高分子量合成聚合物絮凝剂絮凝悬浮固体的水性悬浮液时，如果聚合物材料包括低于10μm干燥尺寸的聚合物颗粒，则絮凝物的剪切稳定性增加。 因此，絮凝的固体可以经受剪切而不增加水性介质中离散的悬浮固体的量，并且通常在脱水之前通常剪切含有它们的水性介质，通常在离心机，活塞压力机或带式压力机 ，或者通过连续搅拌它们，例如在化学反应介质中。 聚合物材料通常通过在添加的交联剂的存在下混合成通过反相或乳液聚合制备的水聚合物颗粒来形成。 或者，可以使用不溶性单体不溶的颗粒。 如果颗粒保持不溶，则可以使用水溶性聚合物的反相分散体，例如， 如果在没有水包油乳化剂的情况下加入。

    Testing polyelectrolytes
    3.
    发明授权
    Testing polyelectrolytes 失效
    测试聚电解质

    公开(公告)号：US4820645A

    公开(公告)日：1989-04-11

    申请号：US855518

    申请日：1986-04-23

    申请人： John R. Field ,  David Farrar ,  Peter Flesher

    发明人： John R. Field ,  David Farrar ,  Peter Flesher

    IPC分类号： C02F1/52 ,  C02F1/54 ,  D21H17/37 ,  D21H17/43 ,  D21H17/45 ,  D21H21/10 ,  G01N27/416 ,  G01N27/48

    CPC分类号： D21H21/10 ,  C02F1/52 ,  C02F1/5227 ,  C02F1/54 ,  D21H17/37 ,  D21H17/43 ,  D21H17/455 ,  Y10T436/12

    摘要： Measurement of the ionic value X of a solution of a polyelectrolyte after shearing, for instance by a rotating blade, and/or measurement of the ionic value Y of a solution of polyelectrolyte before shearing, and especially the difference between t he values X and Y, gives a useful indication of the degree of cross linking of the polyelectrolyte and so can be utilized to control the manufacture of the polyelectrolyte, for instance drying conditions, or the storage or use of the polyelectrolyte, for instance its suitability or dosage in a flocculation process.

    摘要翻译： 剪切后的聚电解质溶液的离子值X的测定，例如旋转叶片的测定和/或剪切前聚电解质溶液的离子值Y的测定，特别是X值和Y值之间的差 ，给出了聚电解质的交联程度的有用指示，因此可以用于控制聚电解质的制造，例如干燥条件或聚电解质的储存或使用，例如其在絮凝中的适用性或剂量 处理。

    Polymeric compositions
    4.
    发明授权
    Polymeric compositions 失效
    聚合物组合物

    公开(公告)号：US5171781A

    公开(公告)日：1992-12-15

    申请号：US303476

    申请日：1989-01-27

    申请人： David Farrar ,  John R. Field ,  Peter Flesher

    发明人： David Farrar ,  John R. Field ,  Peter Flesher

    IPC分类号： B01J20/22 ,  C02F1/52 ,  C02F1/54 ,  C08J3/12 ,  C10L5/14 ,  C10L9/10 ,  C22B1/244

    CPC分类号： C08J3/12 ,  B01J20/22 ,  C02F1/5227 ,  C02F1/5236 ,  C02F1/54 ,  C10L5/14 ,  C10L9/10 ,  C22B1/244 ,  C08J2300/14

    摘要： Water absorbent particulate polymers and their uses are described. Friable aggregates may be made by bonding substantially dry polymer particles with an aqueous liquid and drying the aggregates. These aggregates can be broken down to the individual polymer particles upon mixing with an aqueous medium and thus can have the flow properties of relatively coarse particles and the performance properties of relatively fine particles. They may be soluble nd used as flocculants or viscosifiers or binders for, for instance, iron ore pelletisation. Alternatively they may be swellable and insoluble, for instance for converting a sticky particulate mass (such as coal fines filter cake) to a crumbly solid. When pellets are formed by compression moulding from a crumbly solid made by mixing water absorbent polymer particles with a sticky mass of inorganic particles (such as a coal fines filter cake) improved properties are obtained when the absorbent polymer particles are introduced in the form of a dispersion in water-immiscible liquid.

    摘要翻译： 描述了吸水性颗粒聚合物及其用途。 可以通过将基本上干燥的聚合物颗粒与水性液体粘合并干燥聚集体来制备易碎聚集体。 这些聚集体可以在与水性介质混合时分解成单独的聚合物颗粒，因此可以具有相对粗的颗粒的流动性质和较细颗粒的性能。 它们可能是可溶性的，用作例如铁矿石造粒的絮凝剂或粘合剂或粘合剂。 或者，它们可以是可溶胀的和不溶的，例如用于将粘性颗粒物质（例如煤粉滤饼）转化成脆弱的固体。 当通过将吸水性聚合物颗粒与粘性质量的无机颗粒（例如煤粉滤饼）混合制成的粉碎的固体通过压缩成型形成颗粒时，当吸收性聚合物颗粒以 分散在与水不混溶的液体中。

    Flocculation processes
    5.
    发明授权
    Flocculation processes 失效
    絮凝过程

    公开(公告)号：US4943378A

    公开(公告)日：1990-07-24

    申请号：US325093

    申请日：1989-03-15

    申请人： Peter Flesher ,  David Farrar ,  John R. Field

    发明人： Peter Flesher ,  David Farrar ,  John R. Field

    IPC分类号： C02F1/52 ,  C02F1/54 ,  D21H17/37 ,  D21H17/43 ,  D21H17/45 ,  D21H21/10

    CPC分类号： C02F1/5227 ,  C02F1/54 ,  D21H21/10 ,  D21H17/37 ,  D21H17/43 ,  D21H17/455

    摘要： When flocculating an aqueous suspension of suspended solids using a high molecular weight synthetic polymeric flocculant the shear stability of the flocs is increased if the polymeric material includes polymeric particles of below 10 .mu.m dry size. The flocculated solids can therefore be subjected to shear without increasing the amount of discrete suspended solids in the aqueous medium and generally they are suspended to shear by shearing the aqueous medium containing them, either before dewatering, generally on a centrifuge, piston press or belt press, or by continuously agitating them, for instance in a chemical reaction medium. The polymeric material is generally formed by mixing into water polymeric particles made by reverse phase or emulsion polymerization in the presence of added cross linking agent. Alternatively particles insolubilized by insoluble monomer may be used. A reverse phase dispersion of water soluble polymer may be used if the particles remain undissolved, e.g. if they are added in the absence of an oil in water emulsifying agent.

    摘要翻译： 当使用高分子量合成聚合物絮凝剂絮凝悬浮固体的水性悬浮液时，如果聚合物材料包括低于10μm干燥尺寸的聚合物颗粒，则絮凝物的剪切稳定性增加。 因此，絮凝的固体可以经受剪切而不增加水性介质中离散的悬浮固体的量，并且通常在脱水之前通常剪切含有它们的水性介质，通常在离心机，活塞压力机或带式压力机 ，或者通过连续搅拌它们，例如在化学反应介质中。 聚合物材料通常通过在添加的交联剂的存在下混合成通过反相或乳液聚合制备的水聚合物颗粒来形成。 或者可以使用不溶性单体不溶的颗粒。 如果颗粒保持不溶，则可以使用水溶性聚合物的反相分散体，例如， 如果在没有水包油乳化剂的情况下加入。

    Absorbent products and their manufacture
    7.
    发明授权
    Absorbent products and their manufacture 失效
    吸收产品及其制造

    公开(公告)号：US5280079A

    公开(公告)日：1994-01-18

    申请号：US884371

    申请日：1992-05-18

    申请人： Adrian S. Allen ,  David Farrar ,  Peter Flesher

    发明人： Adrian S. Allen ,  David Farrar ,  Peter Flesher

    IPC分类号： A61L15/60 ,  C08F8/14 ,  C08F220/04 ,  C08F220/46 ,  C08F220/06 ,  C08F220/28

    CPC分类号： C08F220/04 ,  A61L15/60 ,  C08F8/14 ,  Y10S525/919

    摘要： A water absorbent water insoluble polymeric element, such as a fibre, film, coating, bonding layer or foam, is made by forming a substantially linear polymer by polymerisation of water soluble ethylenically unsaturated monomer blends comprising carboxylic and hydroxylic monomers and then reacting the carboxylic and hydroxylic monomers in the linear polymer to form internal cross links within the polymer.

    摘要翻译： 通过使包含羧酸和羟基单体的水溶性烯键式不饱和单体共混物的聚合形成基本上线性的聚合物，然后使羧酸和羟基单体混合物反应，形成吸水性不溶于水的聚合物元件，例如纤维，膜，涂层，粘合层或泡沫 线性聚合物中的羟基单体在聚合物内形成内部交联。