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    Inverse emulsion polymer and production thereof
    3.
    发明授权
    Inverse emulsion polymer and production thereof 有权
    反相乳液聚合物及其制备

    公开(公告)号：US06414080B1

    公开(公告)日：2002-07-02

    申请号：US09376500

    申请日：1999-08-18

    申请人： Randy J. Loeffler ,  Shih-Ruey T. Chen ,  Kevin W. Frederick ,  James E. Rak

    发明人： Randy J. Loeffler ,  Shih-Ruey T. Chen ,  Kevin W. Frederick ,  James E. Rak

    IPC分类号： C08F232

    CPC分类号： C08F220/58 ,  C08F2/32

    摘要： Disclosed herein is an inverse emulsion polymer composition comprising a copolymer or copolymer salt of N,N,-dimethylacrylamide and 2-acrylamido-2-methylpropane sulfonic acid or acid salts thereof, having a Brookfield viscosity of less than 20,000 Cps at 23° C. and an active polymer concentration of about 25 to about 75 weight percent. The inverse emulsion polymer composition is in a hydrocarbon with a primary surfactant and optionally contains water.

    摘要翻译： 本文公开了一种反相乳液聚合物组合物，其包含N，N， - 二甲基丙烯酰胺和2-丙烯酰胺基-2-甲基丙磺酸或其酸式盐的共聚物或共聚物盐，其在23℃下的Brookfield粘度小于20,000Cps 和约25至约75重量％的活性聚合物浓度。 反相乳液聚合物组合物在与主要表面活性剂的烃中，并且任选地含有水。

    Process for preparing novel high solids non-aqueous polymer compositions
    5.
    发明授权
    Process for preparing novel high solids non-aqueous polymer compositions 失效

    公开(公告)号：US5589525A

    公开(公告)日：1996-12-31

    申请号：US315371

    申请日：1994-09-30

    申请人： Wood E. Hunter ,  Kevin W. Frederick ,  Randy J. Loeffler

    发明人： Wood E. Hunter ,  Kevin W. Frederick ,  Randy J. Loeffler

    IPC分类号： C08J3/00 ,  B01D1/22 ,  C08F6/00 ,  C08J3/09 ,  C08L33/04

    CPC分类号： B01D1/22 ,  C08F6/008 ,  C08J3/09

    摘要： The use of falling-film evaporation and a concentration means such as centrifugal separation to dehydrate and concentrate a water-in-oil polymer emulsion or suspension is disclosed. In a preferred embodiment, a water-in-oil polymer composition containing less than about 25% active polymer solids is dehydrated in falling-film evaporator to produce an evaporator concentrate containing less than about 5.0% water. The evaporator concentrate then flows to a separation device such as a centrifuge, wherein oil is removed to produce a composition that is substantially a polymer and emulsifying surfactant-in-oil composition containing in excess of about 60 weight % polymer solids. The centrifuge raffinate may optionally be treated in a second separation means to capture additional polymer solids, with optional recycle of the oil-rich raffinate. The concentrated polymer composition is preferably stabilized with a steric stabilizer to produce a free flowing liquid product.

    Process for preparing novel high solids non-aqueous polymer compositions
    6.
    发明授权
    Process for preparing novel high solids non-aqueous polymer compositions 失效

    公开(公告)号：US5480921A

    公开(公告)日：1996-01-02

    申请号：US299689

    申请日：1994-09-01

    申请人： Wood E. Hunter ,  Kevin W. Frederick ,  Randy J. Loeffler

    发明人： Wood E. Hunter ,  Kevin W. Frederick ,  Randy J. Loeffler

    IPC分类号： C08J3/00 ,  C08F6/20 ,  C08J3/09 ,  C08K5/01 ,  C08J9/28 ,  C08L33/02 ,  C08L33/26

    CPC分类号： C08F6/20 ,  C08J3/09

    摘要： The use of falling-film evaporation and a concentration means such as centrifugal separation to dehydrate and concentrate a water-in-oil polymer emulsion or suspension is disclosed. In a preferred embodiment, a water-in-oil polymer composition containing less than about 25% active polymer solids is dehydrated in falling-film evaporator to produce an evaporator concentrate containing less than about 5.0% water. The evaporator concentrate then flows to a separation device such as a centrifuge, wherein oil is removed to produce a composition that is substantially a polymer and emulsifying surfactant-in-oil composition containing in excess of about 60 weight % polymer solids. The centrifuge raffinate may optionally be treated in a second separation means to capture additional polymer solids, with optional recycle of the oil-rich raffinate. The concentrated polymer composition is preferably stabilized with a steric stabilizer to produce a free flowing liquid product.

    Process for preparing novel high solids non-aqueous polymer compositions
    7.
    发明授权
    Process for preparing novel high solids non-aqueous polymer compositions 失效
    制备新型高固体非水性聚合物组合物的方法

    公开(公告)号：US6110995A

    公开(公告)日：2000-08-29

    申请号：US273688

    申请日：1994-07-12

    申请人： Wood E. Hunter ,  Kevin W. Frederick ,  Randy J. Loeffler

    发明人： Wood E. Hunter ,  Kevin W. Frederick ,  Randy J. Loeffler

    IPC分类号： C08J3/00 ,  C08F6/20 ,  C08J3/09 ,  C08J3/11

    CPC分类号： C08J3/09 ,  C08F6/20 ,  C08J2300/14

    摘要： The use of falling-film evaporation and a concentration means such as centrifugal separation to dehydrate and concentrate a water-in-oil polymer emulsion or suspension is disclosed. In a preferred embodiment, a water-in-oil polymer composition containing less than about 25% active polymer solids is dehydrated in falling-film evaporator to produce an evaporator concentrate containing less than about 5.0% water. The evaporator concentrate then flows to a separation device such as a centrifuge, wherein oil is removed to produce a composition that is substantially a polymer and emulsifying surfactant-in-oil composition containing in excess of about 60 weight % polymer solids. The centrifuge raffinate may optionally be treated in a second separation means to capture additional polymer solids, with optional recycle of the oil-rich raffinate. The concentrated polymer composition is preferably stabilized with a steric stabilizer to produce a free flowing liquid product.

    摘要翻译： 公开了使用降膜蒸发和诸如离心分离的浓缩装置来使油包水聚合物乳液或悬浮液脱水并浓缩。 在优选的实施方案中，包含少于约25％活性聚合物固体的油包水聚合物组合物在降膜蒸发器中脱水以产生含有少于约5.0％水的蒸发浓缩物。 蒸发器浓缩物然后流到分离装置，例如离心机，其中除去油，以产生基本上是含有超过约60重量％聚合物固体的聚合物和乳化表面活性剂 - 油组合物的组合物。 离心萃余液可以任选地在第二分离装置中处理以捕获另外的聚合物固体，并且富油萃取液的任选循环。 浓缩的聚合物组合物优选用空间稳定剂稳定以产生自由流动的液体产物。