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    Low VOC Polyurethane Adhesive
    152.
    发明申请
    Low VOC Polyurethane Adhesive 审中-公开

    公开(公告)号：US20200017736A1

    公开(公告)日：2020-01-16

    申请号：US16579301

    申请日：2019-09-23

    Applicant: Stepan Company

    Inventor： Warren A. Kaplan ,  Sarah Wolek

    IPC: C09J175/04 ,  C08G18/42 ,  C08G18/20 ,  C08G18/32 ,  C08G18/66 ,  C08G18/76 ,  E04D5/14

    Abstract: A low-VOC, two-component polyurethane adhesive is provided. The polyurethane adhesive has an A-side that includes an isocyanate and a non-reactive plasticizer, and a B-side that includes an aliphatic polyester polyol, a non-polyester polyol, and a urethane catalyst. The A-side and the B-side are reacted at a volume ratio of 1:1 and formulated at an NCO/OH index within the range of 0.90 to 1.10. The polyurethane adhesive is solvent-free and is particularly suitable for adhering a polymeric membrane to a substrate.

    Adjustable low gloss powder coating compositions
    153.
    发明授权
    Adjustable low gloss powder coating compositions 有权

    公开(公告)号：US10450479B2

    公开(公告)日：2019-10-22

    申请号：US15727090

    申请日：2017-10-06

    Applicant: Stepan Company

    Inventor： Thomas Stevenson ,  James Poole ,  Jackie Howell

    IPC: C09D167/03 ,  C08L67/00 ,  C08G63/127 ,  C09D5/03 ,  C08G63/02 ,  C09D167/00 ,  C09D167/02 ,  C08G63/91

    Abstract: Thermosetting powdered coating compositions comprising (a) a high Acid Value carboxylic acid functional polyester resin having an Acid Value of at least 100 mg KOH/g and a functionality of at least 4.5, (b) a low Acid Value carboxylic acid functional polyester resin having an Acid Value of 20 to 50 mg KOH/g and a functionality of about 2.5 or less, and (c) a cross-linking agent. The high Acid Value polyester resin is the reaction product of a polycarboxylic acid or its anhydride reacted with a polyester polyol obtained from reacting 0 mol % to 100 mol % of isophthalic acid and/or 0 to 100 mol % terephthalic acid, or a mixture thereof, with a polyol mixture comprising at least one diol and at least one polyol having at least three hydroxyl groups. The thermosetting powdered coating compositions provide coatings with low gloss levels that can be adjusted from a gloss level of less than 1 to 40 or less, when measured at an angle of 60°, by varying the ratios of the high Acid Value and low Acid Value polyester resins in the composition.

    Surfactants for enhanced oil recovery
    154.
    发明授权
    Surfactants for enhanced oil recovery 有权

    公开(公告)号：US10435618B2

    公开(公告)日：2019-10-08

    申请号：US15399888

    申请日：2017-01-06

    Applicant: Stepan Company

    Inventor： Ramakrishna Ravikiran ,  Jieyuan Zhang

    IPC: C09K8/584

    Abstract: Surfactant compositions useful for oil recovery are disclosed. The compositions comprise from 10 to 80 wt. % of a propoxylated C12-C20 alcohol sulfate, from 10 to 80 wt. % of a C12-C20 internal olefin sulfonate, and from 0.1 to 10 wt. % of an ethoxylated C4-C12 alcohol sulfate. Surprisingly, including a minor proportion of the ethoxylated alcohol sulfate reduces or eliminates the need to rely on costly cosolvents for achieving good performance in enhanced oil recovery processes. In particular, low interfacial tensions and low microemulsion viscosities can be achieved when the ethoxylated alcohol sulfate accompanies the propoxylated alcohol sulfate and internal olefin sulfonate. Aqueous concentrates comprising water and the surfactant compositions described above are also disclosed. Dilution of the surfactant composition or aqueous concentrate with water or brine to the desired anionic actives level provides an injectable composition useful for EOR applications. Stable, low-viscosity oil-in-water microemulsions comprising crude oil, water, and the surfactant compositions are also disclosed.

    SURFACTANTS BASED ON MONOUNSATURATED FATTY ALCOHOL DERIVATIVES
    155.
    发明申请
    SURFACTANTS BASED ON MONOUNSATURATED FATTY ALCOHOL DERIVATIVES 审中-公开

    公开(公告)号：US20190225915A1

    公开(公告)日：2019-07-25

    申请号：US16374819

    申请日：2019-04-04

    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 ,  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.

    Alpha-olefin sulfonic dimer acid process
    157.
    发明授权
    Alpha-olefin sulfonic dimer acid process 有权

    公开(公告)号：US10315988B2

    公开(公告)日：2019-06-11

    申请号：US15749798

    申请日：2016-07-28

    Applicant: STEPAN COMPANY

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

    IPC: C09K8/02 ,  C09K8/94 ,  C07G99/00 ,  C07C303/06 ,  C07C303/22 ,  C07C309/04 ,  C07C309/05 ,  C07C309/20 ,  C07C309/62

    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.

    POLYETHERAMINE COMPOSITIONS FOR LAUNDRY DETERGENTS
    158.
    发明申请
    POLYETHERAMINE COMPOSITIONS FOR LAUNDRY DETERGENTS 审中-公开

    公开(公告)号：US20190085266A1

    公开(公告)日：2019-03-21

    申请号：US16193143

    申请日：2018-11-16

    Applicant: STEPAN COMPANY

    Inventor： Dennis S. Murphy ,  Franz J. Luxem ,  Patrick Shane Wolfe

    IPC: C11D3/37 ,  C11D1/14 ,  C11D1/22 ,  C11D1/66 ,  C11D1/72 ,  C11D11/00

    Abstract: Detergent compositions comprising one or more surfactants and a polyetheramine composition are disclosed. The polyetheramine composition comprises a compound having a polyglycerol core and an aminoalkyl group or an oxidized aminoalkyl group that is bonded directly or indirectly to each available oxygen of the polyglycerol core. Optionally, oxyalkylene groups link available oxygens of the polyglycerol core to the aminoalkyl or oxidized aminoalkyl groups. Methods for laundering textile articles and other cleaning methods using the detergent compositions are also disclosed. The polyetheramines can use diglycerol, a convenient plant-based starter. Laundry detergents comprising the polyetheramines provide enhanced cold-water cleaning performance for greasy or oily stains compared with similar detergents formulated without the polyetheramines.

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