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    METHODS FOR REGENERATING A SULFUR SCAVENGING COMPOUND FROM A PRODUCT OF A SULFUR SCAVENGING REACTION
    3.
    发明申请
    METHODS FOR REGENERATING A SULFUR SCAVENGING COMPOUND FROM A PRODUCT OF A SULFUR SCAVENGING REACTION 审中-公开
    从硫磺扫描反应产物中再生硫磺螯合化合物的方法

    公开(公告)号：WO1994020451A1

    公开(公告)日：1994-09-15

    申请号：PCT/US1994001663

    申请日：1994-02-17

    Applicant: QUAKER CHEMICAL CORPORATION

    Inventor： QUAKER CHEMICAL CORPORATION ,  TRAUFFER, Edward, A. ,  EVANS, Robert, D.

    IPC: C07C211/09

    CPC classification number: C07C211/09 ,  C01B17/22 ,  C07D251/04

    Abstract: Methods are provided whereby an N-C-N compound is regenerated from a product of a sulfur scavenging reaction, in which said N-C-N compound removes a sulfur atom from a sulfur compound, to form the original N-C-N compound. The N-C-N compound is represented by formula (I). The product includes a hetero compound having sulfur, carbon and nitrogen atoms in its backbone. In one embodiment, the product is mixed with (1) a nitrogen compound represented by formula (II) and (2) an alkaline compound selected from alkali metal, alkaline earth metal and transition metal compounds, to form a solution, slurry or dispersion. The hetero compound is reacted with the nitrogen compound in the presence of the alkaline compound, such that a sulfur atom of the hetero compound is replaced by a nitrogen atom of the nitrogen compound. If necessary, the pH of the solution may be adjusted to about 8 to about 13 to facilitate the reaction. In alternative embodiments, the product also includes an amine complex. The nitrogen atom being substituted for the sulfur atom in the hetero compound may be obtained from either the nitrogen compound or the amine complex.

    Abstract translation: 提供了这样的方法，其中N-C-N化合物由硫清除反应的产物再生，其中所述N-C-N化合物从硫化合物中除去硫原子，形成原始的N-C-N化合物。 N-C-N化合物由式（I）表示。 该产物包括在其主链中具有硫，碳和氮原子的杂化合物。 在一个实施方案中，将产物与（1）由式（II）表示的氮化合物和（2）选自碱金属，碱土金属和过渡金属化合物的碱性化合物混合以形成溶液，浆料或分散体。 杂化化合物在碱性化合物的存在下与氮化合物反应，使得杂化合物的硫原子被氮化合物的氮原子代替。 如果需要，可以将溶液的pH调节至约8至约13以促进反应。 在替代实施方案中，产物还包括胺络合物。 取代杂化合物中的硫原子的氮原子可以由氮化合物或胺络合物获得。

    METHOD FOR CONTROLLING PITCH DEPOSITS IN PULP AND PAPERMAKING PROCESSES
    4.
    发明申请
    METHOD FOR CONTROLLING PITCH DEPOSITS IN PULP AND PAPERMAKING PROCESSES 审中-公开
    在纸浆和造纸过程中控制沉淀沉积物的方法

    公开(公告)号：WO1992003615A1

    公开(公告)日：1992-03-05

    申请号：PCT/US1991005388

    申请日：1991-07-30

    Applicant: QUAKER CHEMICAL CORPORATION

    Inventor： QUAKER CHEMICAL CORPORATION ,  BUZBY, John, H. ,  EVANS, Robert, D.

    IPC: D21H21/02

    CPC classification number: D21H17/12 ,  D21C9/08 ,  D21H21/02 ,  Y10S162/04

    Abstract: The deposition of pitch on the machinery used in pulping and papermaking processes and in the final paper produced in the papermaking process is prevented by adding an effective amount of a water-soluble organotitanium compound to the aqueous system of a pulping and/or papermaking process to prevent the deposition of the pitch on the machinery and in the final paper. The addition of an effective amount of a water-soluble organotitanium compound to the aqueous system of pulping and papermaking processes also removes pitch deposits from the machinery used in the pulping and papermaking processes.

    METHODS FOR RECOVERING SODIUM SULFIDES FROM A SULFUR SCAVENGING REACTION
    6.
    发明申请
    METHODS FOR RECOVERING SODIUM SULFIDES FROM A SULFUR SCAVENGING REACTION 审中-公开
    从硫磺吸收反应中回收硫酸钠的方法

    公开(公告)号：WO1996002461A1

    公开(公告)日：1996-02-01

    申请号：PCT/US1995008399

    申请日：1995-07-07

    Applicant: QUAKER CHEMICAL CORPORATION

    Inventor： QUAKER CHEMICAL CORPORATION ,  TRAUFFER, Edward, A.

    IPC: C01B17/22

    CPC classification number: C07C211/09 ,  C01B17/22 ,  C07D251/04

    Abstract: A method is provided for the regeneration of a scavenging compound that has been reacted with hydrogen sulfide. Regeneration is accomplished through the use of calcium oxides and sodium hydroxide. Sodium sulfide is recovered from the regeneration process in a commercially useful form. Calcium oxides are also regenerated in the process, allowing for minimal or no chemical waste.

    Abstract translation: 提供了与硫化氢反应的清除化合物的再生方法。 再生是通过使用氧化钙和氢氧化钠来完成的。 以商业上有用的形式从再生过程中回收硫化钠。 在此过程中也可再生氧化钙，从而使化学废物达到最少或无。

    STABLE RESIN METHODS AND COMPOSITIONS FOR AQUEOUS TREATMENTS
    7.
    发明申请
    STABLE RESIN METHODS AND COMPOSITIONS FOR AQUEOUS TREATMENTS 审中-公开

    公开(公告)号：WO2023049927A1

    公开(公告)日：2023-03-30

    申请号：PCT/US2022/077085

    申请日：2022-09-27

    Applicant: QUAKER CHEMICAL CORPORATION

    Inventor： NUNEZ, Ricardo ,  GOU, Linfeng ,  LIN, Junren ,  LOCOCO, Matthew, D. ,  JOHNSON, Chad ,  WILLIAMSON, Stephanie

    IPC: C09D5/02 ,  C09D7/48 ,  C08F2/30

    Abstract: Methods and compositions for stabilized, emulsified aqueous resin and/or polymer emulsions within aqueous fluids characterized by extreme chemical environment having high ionic strengths and/or extremes of pH are provided. The methods include combining an organic premix comprising an aqueous fluid and the emulsified aqueous resin/emulsion polymers with a high hydrophobic-lipophilic balance (HLB) surfactant and a fluid having an extreme chemical environment (e.g., an acidic passivate) to yield a composition wherein the emulsified aqueous resins are stabilized. Other methods include combining an emulsified aqueous resin/emulsion polymer with a high hydrophobic-lipophilic balance (HLB) surfactant and a fluid having an extreme chemical environment (e.g., an acidic passivate) to yield a composition wherein the emulsified aqueous resins are stabilized.

    METHODS FOR REDUCING SULFIDES IN SEWAGE GAS
    10.
    发明申请
    METHODS FOR REDUCING SULFIDES IN SEWAGE GAS 审中-公开
    减少煤层气中硫磺的方法

    公开(公告)号：WO1992001481A1

    公开(公告)日：1992-02-06

    申请号：PCT/US1991005232

    申请日：1991-07-24

    Applicant: QUAKER CHEMICAL CORPORATION

    Inventor： QUAKER CHEMICAL CORPORATION ,  DILLON, Edward, Thomas

    IPC: A61L09/00

    CPC classification number: B01D53/52 ,  A61L9/01 ,  B01D53/485 ,  C10G2300/207

    Abstract: Methods are provided for selectively reducing the levels of hydrogen sulfide and organic sulfides in sewage gas to reduce or remove the odor, toxicity and corrosivity associated therewith, comprising contacting said sewage gas with a composition comprising a trisubstituted hexahydro-s-triazine.

    Abstract translation: 提供了用于选择性地降低污水中硫化氢和有机硫化物水平以降低或消除与之相关的气味，毒性和腐蚀性的方法，包括使所述污水与包含三取代六氢-s-三嗪的组合物接触。

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