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    Surfactants based on monounsaturated fatty alcohol derivatives
    1.
    发明授权
    Surfactants based on monounsaturated fatty alcohol derivatives 有权

    公开(公告)号：US10287530B2

    公开(公告)日：2019-05-14

    申请号：US15606285

    申请日：2017-05-26

    Applicant: Stepan Company

    Inventor： David R. Allen ,  Randal J. Bernhardt ,  Aaron Brown ,  Gregory P. Dado ,  Xue Min Dong ,  Wilma Gorman ,  Ronald Masters ,  Patti Skelton

    IPC: C11D1/14 ,  C07C305/10 ,  A01N25/00 ,  A01N25/30

    Abstract: Surfactant compositions comprising an alkoxylate, a sulfate, or ether sulfate of a C10-C12 monounsaturated alcohol are disclosed. The alkoxylate, sulfate, or ether sulfate may derive from undecylenic acid or undecylenic alcohol. Compared with their saturated analogs, the monounsaturated alkoxylates, sulfates, and ether sulfates are less irritating, making them valuable for personal care, laundry, cleaners, and other household applications. Microscopy studies show that the alkoxylates, sulfates, and ether sulfates have favorable phase behavior over a wide range of actives levels, expanding opportunities for products with greater compaction. When combined with cationic surfactants, the alkoxylates, sulfates, and ether sulfates exhibit synergy, and they have improved solubility compared with their saturated analogs. The surfactants find value for the personal care, laundry and cleaning, emulsion polymerization, agricultural products, oilfield applications, and specialty foams industries.

    Steam foam methods for steam-assisted gravity drainage
    2.
    发明授权
    Steam foam methods for steam-assisted gravity drainage 有权

    公开(公告)号：US10989028B2

    公开(公告)日：2021-04-27

    申请号：US16781608

    申请日：2020-02-04

    Applicant: Stepan Company

    Inventor： Aaron Sanders ,  Gregory P. Dado ,  Brian Holland ,  Xue Min Dong ,  E. Carolina Rojas

    IPC: E21B43/24 ,  C09K8/584 ,  E21B43/30

    Abstract: Methods for making efficient use of steam in a steam-assisted gravity drainage (SAGD) process for recovering heavy oils from tar sands and similar petroleum deposits are disclosed. The methods utilize a surfactant to generate steam foam in ways that maximize efficient use of steam. In some aspects, steam foam is used in water layers or gas caps that reside above steam chambers to prevent loss of steam from the steam chamber. The predominant use of relatively dry steam in SAGD processes makes it challenging to find ways to introduce surfactants and generate steam foam. However, decreasing the mobility of the steam by converting at least some of it to foam allows the wellbore and steam chambers above the injection site to be more fully developed, provides for more effective heat transfer to the heavy oil and rock, improves production, and allows recovery of the heavy oil with a minimum amount of steam usage.

    SURFACTANTS BASED ON MONOUNSATURATED FATTY ALCOHOL DERIVATIVES
    4.
    发明申请
    SURFACTANTS BASED ON MONOUNSATURATED FATTY ALCOHOL DERIVATIVES 审中-公开

    公开(公告)号：US20170267946A1

    公开(公告)日：2017-09-21

    申请号：US15606285

    申请日：2017-05-26

    Applicant: Stepan Company

    Inventor： David R. Allen ,  Randal J. Bernhardt ,  Aaron Brown ,  Gregory P. Dado ,  Xue Min Dong ,  Wilma Gorman ,  Ronald Masters ,  Patti Skelton

    IPC: C11D1/14 ,  C07C305/10 ,  A01N25/00 ,  A01N25/30

    CPC classification number: C11D1/146 ,  A01N25/00 ,  A01N25/30 ,  C07C305/10

    Abstract: Surfactant compositions comprising an alkoxylate, a sulfate, or ether sulfate of a C10-C12 monounsaturated alcohol are disclosed. The alkoxylate, sulfate, or ether sulfate may derive from undecylenic acid or undecylenic alcohol. Compared with their saturated analogs, the monounsaturated alkoxylates, sulfates, and ether sulfates are less irritating, making them valuable for personal care, laundry, cleaners, and other household applications. Microscopy studies show that the alkoxylates, sulfates, and ether sulfates have favorable phase behavior over a wide range of actives levels, expanding opportunities for products with greater compaction. When combined with cationic surfactants, the alkoxylates, sulfates, and ether sulfates exhibit synergy, and they have improved solubility compared with their saturated analogs. The surfactants find value for the personal care, laundry and cleaning, emulsion polymerization, agricultural products, oilfield applications, and specialty foams industries.

    Alkyl Lactyllactates and Processes of Making the Same
    5.
    发明申请
    Alkyl Lactyllactates and Processes of Making the Same 审中-公开
    烷基乳酸及其制备方法

    公开(公告)号：US20140194646A1

    公开(公告)日：2014-07-10

    申请号：US14146662

    申请日：2014-01-02

    Applicant: Stepan Company

    Inventor： David R. Allen ,  Anatoliy A. Dameshek ,  Branko Sajic ,  Irene Shapiro ,  Xue Min Dong ,  Christopher D. Smith ,  Jacqueline M. Pytel ,  Jeremy Weitgenant

    IPC: C07C67/08

    CPC classification number: C07C67/08 ,  A61K8/37 ,  A61Q5/02 ,  A61Q15/00 ,  A61Q19/10 ,  C07B2200/07 ,  C07C67/03 ,  C07C69/68

    Abstract: Provided are alkyl lactyllactate compositions that can be prepared from (1) lactide or alternatively lactic acid, and (2) a hydroxyl containing compound such as an alcohol, preferably a fatty alcohol or an alkoxylated alcohol, with (3) an acid catalyst. Preferably, the fatty alcohol contains from about 6 to 18 carbon atoms, such as lauryl alcohol. The alkyl lactyllactates can be used as surfactants, emulsifiers, skin feel agents, film formers, thickeners, rheological modifiers, etc., for personal care and other application areas. Compositions containing at least one alkyl lactyllactate are also provided. The compositions can further contain at least one surfactant.

    Abstract translation: 本发明提供可由（1）丙交酯或乳酸制备的乳酸乳糖酯组合物，和（2）含羟基化合物如醇，优选脂肪醇或烷氧基化醇与（3）酸催化剂。 优选地，脂肪醇含有约6至18个碳原子，例如月桂醇。 乳酸乳酸烷基酯可用作个人护理和其他应用领域的表面活性剂，乳化剂，皮肤感觉剂，成膜剂，增稠剂，流变改性剂等。 还提供了含有至少一种乳糖基乳酸酯的组合物。 组合物还可以含有至少一种表面活性剂。

    Synergistic surfactant blends
    8.
    发明授权
    Synergistic surfactant blends 有权

    公开(公告)号：US10982174B2

    公开(公告)日：2021-04-20

    申请号：US16601726

    申请日：2019-10-15

    Applicant: STEPAN COMPANY

    Inventor： Randal J. Bernhardt ,  Xue Min Dong

    IPC: C11D1/65 ,  A61K8/41 ,  A61Q5/02 ,  A61Q19/10 ,  A01N25/04 ,  A61K8/46 ,  A61K8/49 ,  A61Q19/00 ,  C09K8/584 ,  C11D11/00 ,  C11D1/02 ,  C11D1/62

    Abstract: Synergistic surfactant blends are disclosed. In one aspect, the blend comprises an anionic surfactant and a metathesis-based cationic surfactant comprising a quaternized derivative. The quaternized derivative is a quaternized fatty amine, quaternized fatty amidoamine, imidazoline quat, or esteramine quat made from a metathesis-derived C10-C17 monounsaturated acid or its ester derivative. Also disclosed are synergistic surfactant blends comprising a cationic surfactant and a metathesis-based anionic surfactant comprising a sulfonated derivative. The sulfonated derivative is a fatty ester sulfonate, fatty acid sulfonate, sulfoestolide, fatty amide sulfonate, sulfonated fatty ester alkoxylate, imidazoline quat sulfonate, sulfonated amidoamine oxide, or sulfonated amidoamine betaine. The synergistic blends have a negative β value or a reduced interfacial tension (IFT) when compared with an expected IFT value calculated from the individual surfactant components. Blends of the invention also exhibit surprisingly favorable solubility profiles. The surfactant blends are useful for laundry detergents, dish detergents, household or industrial cleaners, personal care products, agricultural products, building materials, oil recovery compositions, emulsion polymers, and other practical applications.

    SYNERGISTIC SURFACTANT BLENDS
    10.
    发明申请
    SYNERGISTIC SURFACTANT BLENDS 审中-公开

    公开(公告)号：US20170211016A1

    公开(公告)日：2017-07-27

    申请号：US15482932

    申请日：2017-04-10

    Applicant: STEPAN COMPANY

    Inventor： Randal J. Bernhardt ,  Xue Min Dong

    IPC: C11D1/65 ,  C11D11/00 ,  C09K8/584

    CPC classification number: C11D1/65 ,  A01N25/04 ,  A61K8/416 ,  A61K8/466 ,  A61K8/4946 ,  A61K2800/596 ,  A61Q5/02 ,  A61Q19/00 ,  A61Q19/10 ,  C09K8/584 ,  C11D1/02 ,  C11D1/62 ,  C11D1/652 ,  C11D11/0017 ,  C11D11/0023

    Abstract: Synergistic surfactant blends are disclosed. In one aspect, the blend comprises an anionic surfactant and a metathesis-based cationic surfactant comprising a quaternized derivative. The quaternized derivative is a quaternized fatty amine, quaternized fatty amidoamine, imidazoline quat, or esteramine quat made from a metathesis-derived C10-C17 monounsaturated acid or its ester derivative. Also disclosed are synergistic surfactant blends comprising a cationic surfactant and a metathesis-based anionic surfactant comprising a sulfonated derivative. The sulfonated derivative is a fatty ester sulfonate, fatty acid sulfonate, sulfoestolide, fatty amide sulfonate, sulfonated fatty ester alkoxylate, imidazoline quat sulfonate, sulfonated amidoamine oxide, or sulfonated amidoamine betaine. The synergistic blends have a negative β value or a reduced interfacial tension (IFT) when compared with an expected IFT value calculated from the individual surfactant components. Blends of the invention also exhibit surprisingly favorable solubility profiles. The surfactant blends are useful for laundry detergents, dish detergents, household or industrial cleaners, personal care products, agricultural products, building materials, oil recovery compositions, emulsion polymers, and other practical applications.

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