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    Silica scale inhibition
    2.
    发明公开
    Silica scale inhibition 失效
    VerhütungvonKieselsäureablagerungen。

    公开(公告)号：EP0459661A1

    公开(公告)日：1991-12-04

    申请号：EP91304381.6

    申请日：1991-05-15

    Applicant: ROHM AND HAAS COMPANY

    Inventor： Bardsley, Judy Hughes ,  Hann, William Mathis ,  Robertson, Susan Tabb ,  Schulman, Jan Edward

    IPC: C02F5/08 ,  C02F5/10 ,  C02F5/12

    CPC classification number: C11D3/378 ,  C02F5/08 ,  C02F5/083 ,  C02F5/10 ,  C02F5/12

    Abstract: A method is provided for inhibiting silica or silica scale formation in aqueous systems using (a) selected low molecular weight (meth)acrylic or maleic acid based copolymers or terpolymers, (b) magnesium ion alone, (c) the selected copolymers or terpolymers with aluminum ion or magnesium ion, or (d) poly(meth)acrylic or polymaleic acid with aluminum ion or magnesium ion.

    Abstract translation: 提供了一种使用（a）选择的低分子量（甲基）丙烯酸或马来酸基共聚物或三元共聚物，（b）单独的镁离子，（c）所选择的共聚物或三元共聚物与 铝离子或镁离子，或（d）具有铝离子或镁离子的聚（甲基）丙烯酸或聚马来酸。

    Method for metal sulfate scale control in harsh oilfield conditions
    5.
    发明公开
    Method for metal sulfate scale control in harsh oilfield conditions 失效
    在困难的条件下生产的油控制金属硫酸盐沉积物的方法

    公开(公告)号：EP0792998A1

    公开(公告)日：1997-09-03

    申请号：EP97301235.4

    申请日：1997-02-25

    Applicant: ROHM AND HAAS COMPANY

    Inventor： Hann, William Mathis ,  Robertson, Susan Tabb ,  Weinstein, Barry

    IPC: E21B37/06 ,  C02F5/10 ,  C02F5/12

    CPC classification number: C02F5/10 ,  C02F5/12 ,  C09K8/528

    Abstract: A method for inhibiting barium sulfate precipitation in low pH aqueous fluids of underground petroleum-bearing formations by adding to such systems an effective amount of low molecular weight water-soluble polymer containing 5-35 weight percent sulfonic acid monomer units and 65-95 weight percent carboxylic acid monomer units, is provided. Polymer compositions based on 10-15 weight percent 2-acrylamido-2-methyl-1-propanesulfonic acid, 15-65 weight percent acrylic acid and 25-70 weight percent maleic acid are particularly preferred for use at very low pH conditions, e.g., 5.5 or less in the presence of high sulfate ion and barium ion concentrations.

    Abstract translation: 一种方法，用于抑制通过向寻求系统有效量的低分子量的水溶性聚合物含5-35％（重量）磺酸单体单元和65〜95％（重量）在地下含油岩层的低pH值的水性流体沉淀硫酸钡 羧酸单体单元，被设置。 基于10-15％（重量）2-丙烯酰氨基-2-甲基-1-丙磺酸，15-65％（重量）丙烯酸和25〜70％（重量）马来酸的聚合物组合物特别优选用于使用在非常低的pH条件下，例如， 5.5或更小的高硫酸盐离子和钡离子浓度的存在。

    Use of acrylic acid copolymer for combating particulate matter formation and/or dispersing particulate matter in an aqueous system
    7.
    发明公开
    Use of acrylic acid copolymer for combating particulate matter formation and/or dispersing particulate matter in an aqueous system 失效
    用于组合颗粒物质和/或分散在水性体系中的颗粒物的丙烯酸共聚物的使用

    公开(公告)号：EP0123482A3

    公开(公告)日：1985-01-23

    申请号：EP84302527

    申请日：1984-04-13

    Applicant: ROHM AND HAAS COMPANY

    Inventor： Hann, William Mathis ,  Dupre, Jean ,  Natoli, John

    IPC: C02F05/10

    CPC classification number: C02F5/10

    Abstract: Water soluble copolymer comprising 85 to 97 weight percent of acrylic acid units and 15 to 3 weight percent of hydrophobic comonomer comprising one or more of (C 2 to C.)-alkyl acrylates, (C 1 to C 3 -alkyl methacrylates and vinyl aromatic compounds, having a weight average molecular weight of 2,000 to 5,000 has been found useful in combating the formation of inorganic particulate material, such as hardness ion salt scale, in an aqueous system and/or for dispersing inorganic particulate matter, such as calcium carbonate or clay, present in an aqueous system. The aqueous system is preferably a cooling water system.

    Use of acrylic acid copolymer for combating particulate matter formation and dispersing particulate matter in an aqueous system
    8.
    发明公开
    Use of acrylic acid copolymer for combating particulate matter formation and dispersing particulate matter in an aqueous system 失效
    颗粒和防止其沉积的分散装置Akrylsäurekopolymeren。

    公开(公告)号：EP0123482A2

    公开(公告)日：1984-10-31

    申请号：EP84302527.1

    申请日：1984-04-13

    Applicant: ROHM AND HAAS COMPANY

    Inventor： Hann, William Mathis ,  Dupre, Jean ,  Natoli, John

    IPC: C02F5/10

    CPC classification number: C02F5/10

    Abstract: Water soluble copolymer comprising 85 to 97 weight percent of acrylic acid units and 15 to 3 weight percent of hydrophobic comonomer comprising one or more of (C 2 to C.)-alkyl acrylates, (C 1 to C 3 -alkyl methacrylates and vinyl aromatic compounds, having a weight average molecular weight of 2,000 to 5,000 has been found useful in combating the formation of inorganic particulate material, such as hardness ion salt scale, in an aqueous system and/or for dispersing inorganic particulate matter, such as calcium carbonate or clay, present in an aqueous system. The aqueous system is preferably a cooling water system.

    Abstract translation: 水溶性共聚物，其包含85至97重量％的丙烯酸单元和包括一个或多个15至3重量百分比的疏水性共聚单体的（C2至C8）烷基酯（C1至C8）烷基甲基丙烯酸酯和乙烯基芳族化合物，具有 为2,000至5,000的重均分子量已经发现有用的打击无机颗粒材料，颜色的形成：在wässrige系统，诸如硬度离子盐规模，和/或无机颗粒物质分散,:如碳酸盐或粘土钙，本 在wässrige系统，该wässrige系统优选是冷却水系统。

    Method of inhibiting corrosion in aqueous systems
    10.
    发明公开
    Method of inhibiting corrosion in aqueous systems 失效
    一种用于在含水系统中抑制腐蚀的方法

    公开(公告)号：EP0700987A3

    公开(公告)日：1996-11-20

    申请号：EP95306347.6

    申请日：1995-09-11

    Applicant: ROHM AND HAAS COMPANY

    Inventor： Freeman, Michael Bennet ,  Hann, William Mathis ,  Paik, Yi Hyon ,  Swift, Graham

    IPC: C11D3/37

    CPC classification number: C09K8/54 ,  C11D3/3719 ,  C23F11/08 ,  C23F11/173

    Abstract: The present invention provides a method of inhibiting corrosion of ferrous metals in aqueous systems. The corrosion is inhibited by adding an effective amount of one or more poly(amino acids) to the aqueous system. Aqueous systems include for example water treatment systems and equipment used for detergent applications. The poly(amino acids) comprise a reaction product of at least one compound selected from amino acids, amic acids, ammonium salts of monoethylenically unsaturated dicarboxylic acids, ammonium salts of hydroxypolycarboxylic acids and combinations thereof. In one embodiment the poly(amino acids) are added to detergent solutions to inhibit corrosion in equipment for detergent applications. In another embodiment, corrosion inhibitors comprising one or more homopolymers of amino acids and one or more pyrophosphates are added to aqueous systems to inhibit corrosion.

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