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    ALKYLARYL SULFONATES WITH REDUCED SULFONE LEVELS AND METHODS FOR THEIR PREPARATION
    1.
    发明申请
    ALKYLARYL SULFONATES WITH REDUCED SULFONE LEVELS AND METHODS FOR THEIR PREPARATION 审中-公开
    具有降低的SULFONE水平的烷基磺酸盐及其制备方法

    公开(公告)号：WO2010062605A1

    公开(公告)日：2010-06-03

    申请号：PCT/US2009/062230

    申请日：2009-10-27

    Applicant: STEPAN COMPANY ,  DADO, Gregory P.

    Inventor： DADO, Gregory P.

    IPC: C07C303/06 ,  C07C309/31

    CPC classification number: C07C303/06 ,  C07C303/32 ,  C11D1/22 ,  C11D11/04 ,  C07C309/31

    Abstract: The present technology relates to method of making alkylaryl sulfonates by gaseous SO 3 sulfonation which reduces total free oils and sulfones of the product by using neutralized salts of sulfonated products of alkylaromatic feedstock as sulfone inhibitors in the SO 3 sulfonation of alkylaromatic compounds. The methods of the present technology utilize mixtures of alkylaromatic feedstocks and sulfonate salts which have low viscosity, are homogeneous and are suitable for processing on commercial continuous SO 3 sulfonation equipment, for example falling film reactors, with little or no modification to said equipment. In some preferred embodiments of the methods of the present technology, the sulfone inhibitor is comprised of a partially neutralized alkylaryl sulfonic acid, i.e., a mixture of sulfonic acid and sulfonate salts. In another embodiment, the sulfone inhibitor is prepared by partially or fully neutralizing an alkylaryl sulfonic acid with a base and then dissolving and/or homogenizing the obtained product into alkylaromatic feedstock prior to sulfonation of the feedstock.

    Abstract translation: 本技术涉及通过气态SO 3磺化制备烷基芳基磺酸盐的方法，其通过在烷基芳族化合物的SO 3磺化中使用烷基芳族原料的磺化产物的中和盐来降低产物的总游离油和砜。 本技术的方法利用烷基芳族原料和磺酸盐的混合物，其具有低粘度，均匀的并且适于在商业上连续的SO 3磺化设备（例如降膜反应器）上加工，对所述设备几乎没有或没有修饰。 在本技术方法的一些优选实施方案中，砜抑制剂由部分中和的烷基芳基磺酸，即磺酸盐和磺酸盐的混合物组成。 在另一个实施方案中，砜抑制剂通过用碱部分或完全中和烷基芳基磺酸制备，然后在所述原料磺化之前将获得的产物溶解和/或均化为烷基芳族原料。

    ALPHA-OLEFIN SULFONIC DIMER ACID PROCESS
    2.
    发明申请
    ALPHA-OLEFIN SULFONIC DIMER ACID PROCESS 审中-公开

    公开(公告)号：WO2017023664A1

    公开(公告)日：2017-02-09

    申请号：PCT/US2016/044375

    申请日：2016-07-28

    Applicant: STEPAN COMPANY

    Inventor： DADO, Gregory P. ,  SANDERS, Aaron ,  DONG, Xue Min ,  ROJAS, Carolina E.

    IPC: C07C303/06 ,  C07C309/20 ,  C07G99/00

    CPC classification number: C07C303/06 ,  C07C309/20

    Abstract: Methods of making an alpha-olefin sulfonic dimer acid (AOS dimer acid) are disclosed. In one method, an alpha-olefin is sulfonated, preferably with sulfur trioxide, to produce a mixture comprising an alpha-olefin sulfonic acid (AOS acid) and sulfur dioxide. This mixture is then heated while purging sulfur dioxide and hydrogen sulfide from the reactor to produce an AOS dimer acid composition. In another method, the AOS acid mixture is treated to remove sulfur dioxide and is then heated to produce an AOS dimer acid composition. With either method, the resulting AOS dimer acid composition has at least a 30% decrease in the level of elemental sulfur when compared with that of an AOS dimer acid composition prepared by a similar process in the absence of any active removal of sulfur dioxide or hydrogen sulfide. AOS dimer acid compositions and salts of the AOS dimer acids, which are useful surfactants for oilfield and other applications, are also disclosed.

    Abstract translation: 公开了制备α-烯烃磺酸二聚酸（AOS二聚酸）的方法。 在一种方法中，α-烯烃被磺化，优选用三氧化硫磺酸，以产生包含α-烯烃磺酸（AOS酸）和二氧化硫的混合物。 然后将该混合物从反应器中吹扫二氧化硫和硫化氢以产生AOS二聚酸组合物。 在另一种方法中，处理AOS酸混合物以除去二氧化硫，然后加热以产生AOS二聚酸组合物。 使用任一种方法，与不存在任何有效除去二氧化硫或氢气的类似方法制备的AOS二聚酸组合物相比，所得到的AOS二聚酸组合物的元素硫含量降低至少30％ 硫化物。 还公开了AOS二聚酸组合物和AOS二聚酸的盐，其是用于油田和其它应用的有用的表面活性剂。

    MIXED DIMERS FROM ALPHA-OLEFIN SULFONIC ACIDS
    3.
    发明申请
    MIXED DIMERS FROM ALPHA-OLEFIN SULFONIC ACIDS 审中-公开
    来自ALPHA-OLEFIN SULFONIC ACIDS的混合二聚体

    公开(公告)号：WO2017023665A1

    公开(公告)日：2017-02-09

    申请号：PCT/US2016/044378

    申请日：2016-07-28

    Applicant: STEPAN COMPANY

    Inventor： ROJAS, Carolina E. ,  DONG, Xue Min ,  SANDERS, Aaron ,  DADO, Gregory P.

    IPC: C09K8/592 ,  E21B43/24

    CPC classification number: C09K8/592 ,  C11D1/143 ,  C11D1/22

    Abstract: Mixed dimer and mixed oligomer compositions are disclosed. The mixed dimer compositions comprise a monosulfonated cross-dimer or a salt thereof. The monosulfonated cross-dimer is a reaction product of (a) an alpha-olefin sulfonic acid (AOS acid); and (b) an unsulfonated olefin, an unsulfonated olefin precursor, or a functionalized olefin. The mixed oligomer compositions comprise a mono- or polysulfonated cross-oligomer or a salt thereof. The mono- or polysulfonated cross-oligomer is a reaction product of (a) an AOS acid; and (b) an unsulfonated diolefin or an unsulfonated diolefin precursor. Various methods for making the mixed dimer or oligomer compositions are described. Salts of the mixed dimer and oligomer compositions are useful surfactants for foams used in oilfield and other applications. The foams have improved high-temperature stability when compared with foams from AOS dimer acid salts.

    Abstract translation: 公开了混合的二聚体和混合的低聚物组合物。 混合的二聚体组合物包含单磺化的交叉二聚体或其盐。 单磺酰交联二聚物是（a）α-烯烃磺酸（AOS酸）的反应产物; 和（b）未磺化的烯烃，未磺化的烯烃前体或官能化的烯烃。 混合的低聚物组合物包含单磺化或多磺化的交叉低聚物或其盐。 单或多磺化交联低聚物是（a）AOS酸的反应产物; 和（b）未磺化的二烯烃或未磺化的二烯烃前体。 描述了制备混合的二聚体或低聚物组合物的各种方法。 混合的二聚物和低聚物组合物的盐是用于油田和其它应用中的泡沫的有用的表面活性剂。 与AOS二聚酸盐的泡沫相比，泡沫具有改善的高温稳定性。

    SURFACTANT COMPOSITIONS
    4.
    发明申请
    SURFACTANT COMPOSITIONS 审中-公开

    公开(公告)号：WO2023014851A1

    公开(公告)日：2023-02-09

    申请号：PCT/US2022/039369

    申请日：2022-08-04

    Applicant: STEPAN COMPANY

    Inventor： KNOCK, Mona Marie ,  DADO, Gregory P.

    IPC: C11D1/825 ,  C11D1/835 ,  C11D3/00 ,  A01N25/30 ,  C05G3/50 ,  C09K23/00 ,  C09K23/42 ,  C09K8/524 ,  C09K8/584 ,  C09D11/03 ,  C09D7/45 ,  C11D1/52 ,  C11D1/72 ,  C11D1/722

    Abstract: Compositions comprising a nonionic surfactant and 0.1 to 30 wt.% of a low-mole alkoxylate are disclosed. Some low-mole alkoxylates have the formula R-O-(AO)pH wherein R is a linear or branched C8-C16 alkyl or alkanolamide group, AO is oxypropylene (PO), oxyethylene (EO), or combinations thereof in random or block configuration, p has an average value within the range of 0.5 to 7, the average number of PO groups is within the range of 0.5 to 4, and the average number of EO groups is within the range of 0 to 3. Dilute aqueous solutions comprising a nonionic surfactant and a minor proportion of a low-mole alkoxylate wet hydrophobic surfaces more effectively, limit foaming, and degrease better than solutions comprising only the nonionic surfactant. The low-mole alkoxylates help to boost wetting performance in applications that require low-foaming surfactants, such as automatic dishwashing and laundry detergents. The low-mole alkoxylates expand the utility of a wide range of commercial nonionic surfactants, particularly ones that normally wet hydrophobic surfaces only with difficulty.

    ALPHA-OLEFIN SULFONIC DIMER ACID PROCESS
    9.
    发明公开
    ALPHA-OLEFIN SULFONIC DIMER ACID PROCESS 审中-公开

    公开(公告)号：EP3331854A1

    公开(公告)日：2018-06-13

    申请号：EP16748436.9

    申请日：2016-07-28

    Applicant: Stepan Company

    Inventor： DADO, Gregory P. ,  SANDERS, Aaron ,  DONG, Xue Min ,  ROJAS, Carolina E.

    IPC: C07C303/06 ,  C07C309/20 ,  C07G99/00

    CPC classification number: C07C303/06 ,  C07C303/22 ,  C07C309/05 ,  C07C309/62 ,  C07G17/004 ,  C09K8/02 ,  C09K8/94 ,  C07C309/20 ,  C07C309/04

    Abstract: Methods of making an alpha-olefin sulfonic dimer acid (AOS dimer acid) are disclosed. In one method, an alpha-olefin is sulfonated, preferably with sulfur trioxide, to produce a mixture comprising an alpha-olefin sulfonic acid (AOS acid) and sulfur dioxide. This mixture is then heated while purging sulfur dioxide and hydrogen sulfide from the reactor to produce an AOS dimer acid composition. In another method, the AOS acid mixture is treated to remove sulfur dioxide and is then heated to produce an AOS dimer acid composition. With either method, the resulting AOS dimer acid composition has at least a 30% decrease in the level of elemental sulfur when compared with that of an AOS dimer acid composition prepared by a similar process in the absence of any active removal of sulfur dioxide or hydrogen sulfide. AOS dimer acid compositions and salts of the AOS dimer acids, which are useful surfactants for oilfield and other applications, are also disclosed.

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