中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

219 records (took 0.03 seconds)

    Synergistic surfactant blends
    101.
    发明授权
    Synergistic surfactant blends 有权

    公开(公告)号：US10513670B2

    公开(公告)日：2019-12-24

    申请号：US15482932

    申请日：2017-04-10

    Applicant: STEPAN COMPANY

    Inventor： Randal J. Bernhardt ,  Xue Min Dong

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

    Process for Enzymatic Production of Triglycerides
    103.
    发明申请
    Process for Enzymatic Production of Triglycerides 审中-公开

    公开(公告)号：US20190078123A1

    公开(公告)日：2019-03-14

    申请号：US16185924

    申请日：2018-11-09

    Applicant: Stepan Company

    Inventor： Vladimir Dragan

    IPC: C12P7/64

    Abstract: An enzymatic process for producing fatty acid triglycerides using a lipase catalyst system that includes a mixture of a supported lipase catalyst and an additive, such as silica gel. The additive is used without adsorbing any of the acyl group donor or acyl group acceptor reactants onto the additive. Use of the catalyst system decreases production reaction time, decreases the temperatures required for reaction, and allows for a single reaction vessel. The catalyst system can be used to efficiently produce medium chain triglycerides or conjugated linoleic acid triglycerides.

    ALPHA-OLEFIN SULFONIC DIMER ACID PROCESS
    106.
    发明申请
    ALPHA-OLEFIN SULFONIC DIMER ACID PROCESS 审中-公开

    公开(公告)号：US20180222854A1

    公开(公告)日：2018-08-09

    申请号：US15749798

    申请日：2016-07-28

    Applicant: STEPAN COMPANY

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

    IPC: C07C303/06

    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.

    METHOD FOR PREPARING 2-MONOACYLGLYCERIDES
    107.
    发明申请
    METHOD FOR PREPARING 2-MONOACYLGLYCERIDES 审中-公开

    公开(公告)号：US20180187125A1

    公开(公告)日：2018-07-05

    申请号：US15740224

    申请日：2016-06-28

    Applicant: STEPAN COMPANY

    Inventor： Joseph C. Rongione

    IPC: C11C1/04 ,  C11C1/10 ,  C12P7/64 ,  C12N9/20

    CPC classification number: C11C1/045 ,  C07C31/08 ,  C07C47/54 ,  C07C47/548 ,  C07C47/58 ,  C11C1/08 ,  C11C1/10 ,  C12N9/20 ,  C12P7/6445 ,  C12Y301/01003

    Abstract: Methods for preparing and purifying 2-monoacylglyceride compounds are disclosed. In one method, an unsaturated triglyceride is reacted with water, a C1-C8 alcohol, or a mixture thereof in the presence of a lipase to produce a mixture comprising a 1,3-dihydroxy-2-monoacylglyceride and fatty esters or acids. Reaction of the 1,3-dihydroxy-2-monoacylglyceride with an aldehyde or ketone gives a mixture comprising a 2-monoacylglyceride acetal or ketal. Fatty esters or acids are removed from the mixture as an overhead product by distillation or wiped-film evaporation to isolate a purified 2-monoacylglyceride acetal or ketal. The inventive methods provide a 2-monoacylglyceride protected at the 1- and 3-positions such that the acyl unit remains at the 2-position. The products are enriched in unsaturated fatty acid content when compared with the unsaturated fatty acid content of the original unsaturated triglyceride. Each method utilizes a practical purification scheme that avoids the scale-up or toxicity issues of commonly employed purification strategies.

    BRANCHED ALKYL SULFATE GYPSUM FOAMER
    108.
    发明申请
    BRANCHED ALKYL SULFATE GYPSUM FOAMER 审中-公开

    公开(公告)号：US20180141014A1

    公开(公告)日：2018-05-24

    申请号：US15736693

    申请日：2016-06-14

    Applicant: STEPAN COMPANY

    Inventor： Brian K. Mirous

    IPC: B01F17/00 ,  C04B24/16 ,  C04B28/14 ,  C04B40/00

    CPC classification number: B01F17/0057 ,  B01F17/0085 ,  C04B24/16 ,  C04B28/14 ,  C04B40/0039 ,  C04B2103/40 ,  C04B2111/0062 ,  C04B38/106

    Abstract: A surfactant composition is disclosed comprising branched alkyl sulfate having 8 to 12 carbon atoms; optionally a linear alkyl sulfate having 8 to 12 carbon atoms; and optionally an alkyl ether sulfate having 8 to 13 carbon atoms. A gypsum slurry or gypsum board core is disclosed comprising gypsum, water, and a surfactant composition as described above. The foam voids in the core have a greater median diameter than foam voids made with corresponding linear alkyl sulfate. A method of controlling the median foam void diameter in a gypsum board is disclosed. A first foam water composition is provided comprising a linear alkyl sulfate surfactant. A second foam water composition is also provided comprising a branched alkyl sulfate surfactant. The proportions of the first and second foam water compositions employed in a gypsum composition are selected, or if desired changed, to provide the desired median foam void diameter.

    COLD-WATER LAUNDRY DETERGENTS
    109.
    发明申请
    COLD-WATER LAUNDRY DETERGENTS 审中-公开

    公开(公告)号：US20170369816A1

    公开(公告)日：2017-12-28

    申请号：US15541500

    申请日：2015-12-29

    Applicant: STEPAN COMPANY

    Inventor： Brian Holland ,  Randal Bernhardt ,  Branko Sajic

    IPC: C11D1/37 ,  C11D3/386 ,  C11D1/14 ,  C11D1/29

    Abstract: Laundry detergents and their use for cold-water cleaning are disclosed. The detergents comprise a lipase and a mid-chain headgroup surfactant or an alkylene-bridged surfactant. The mid-chain headgroup surfactants have a C14-C30 alkyl chain and a polar group bonded to a central zone carbon of the C14-C30 alkyl chain. The alkylene-bridged surfactants comprise a C12-C18 alkyl chain, a polar group, and a C1-C2 alkylene group bonded to the polar group and a central zone carbon of the C12-C18 alkyl chain. Surprisingly, when combined with lipases, detergents formulated with the mid-chain headgroup or alkylene-bridged surfactants effectively liquefy greasy soils at low temperature and provide outstanding cold-water performance in removing greasy stains such as bacon grease, butter, cooked beef fat, or beef tallow from soiled articles.

Patent Agency Ranking