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    STEAM FOAM METHODS FOR STEAM-ASSISTED GRAVITY DRAINAGE
    1.
    发明申请
    STEAM FOAM METHODS FOR STEAM-ASSISTED GRAVITY DRAINAGE 审中-公开

    公开(公告)号：US20200182031A1

    公开(公告)日：2020-06-11

    申请号：US16781608

    申请日：2020-02-04

    申请人： Stepan Company

    发明人： Aaron SANDERS ,  Gregory P. DADO ,  Brian HOLLAND ,  Xue Min DONG ,  E. Carolina ROJAS

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

    摘要： 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.

    REACTIVE SURFACTANTS
    3.
    发明申请
    REACTIVE SURFACTANTS 有权

    公开(公告)号：US20220177403A1

    公开(公告)日：2022-06-09

    申请号：US17437294

    申请日：2020-03-05

    申请人： STEPAN COMPANY

    发明人： Timothy A. BOEBEL ,  Samantha Michelle FARRIS ,  Gary LUEBKE ,  E. Carolina ROJAS ,  Chris SPAULDING ,  Michael R. TERRY ,  Patrick Shane WOLFE ,  Julia ZAUG

    IPC分类号： C07C67/08 ,  C07C41/03 ,  C07D295/088

    摘要： Processes for making reactive surfactants are disclosed. In one such process, a fatty epoxide, a glycidyl ether, or a combination thereof is reacted with an olefin-functional nucleophile to produce an olefin-functional hydrophobe. The olefin-functional hydrophobe is reacted with ethylene oxide, propylene oxide, butylene oxides, or a combination thereof to produce an alkoxylate. Optionally, the alkoxylate is converted to the corresponding sulfate, phosphate, or maleate. Surfactant compositions comprising the reactive surfactants made by these processes are also described. The invention includes polymerizable mixtures comprising an acrylic monomer and the surfactant compositions as well as aqueous acrylic latex emulsions and coatings produced from the emulsions. The reactive surfactants deliver stable latex emulsions with reduced tendency for surfactant migration or excessive foaming. Coatings from the emulsions have improved wet adhesion, scrub resistance, and water resistance.

    POLYMERIC DISPERSANTS FROM ARALKYLATED PHENOLS
    4.
    发明申请
    POLYMERIC DISPERSANTS FROM ARALKYLATED PHENOLS 审中-公开

    公开(公告)号：US20200255593A1

    公开(公告)日：2020-08-13

    申请号：US16836676

    申请日：2020-03-31

    申请人： STEPAN COMPANY

    发明人： Timothy A. BOEBEL ,  Xue Min DONG ,  E. Carolina ROJAS ,  Renee LUKA ,  Gary LUEBKE

    IPC分类号： C08G65/26 ,  C08K3/013 ,  C08K5/00 ,  C08J3/05 ,  C08C2/00

    摘要： Polymers useful in formulating dispersing agents for pigments are disclosed. One such polymer can be made from a glycidyl intermediate. A nucleophilic initiator can be reacted with epichlorohydrin to produce a glycidyl intermediate. This intermediate is reacted with an aralkylated phenol to give a hydroxy-functional hydrophobe. Alkoxylation of the hydrophobe gives the desired polymer. In an alternative, approach, the polymer is made by reacting the nucleophilic initiator with an aralkylated phenol glycidyl ether to give the hydroxy-functional hydrophobe, which is then alkoxylated. Pigments dispersions comprising the polymers are also disclosed. The polymers meet the growing needs of the industry with their ease of manufacture, diverse structures, and desirable performance attributes for dispersing a wide range of organic and inorganic pigments. Agricultural applications for the polymers are also disclosed.

    POLYMERIC DISPERSANTS FROM PHENYL GLYCIDYL ETHER
    5.
    发明申请
    POLYMERIC DISPERSANTS FROM PHENYL GLYCIDYL ETHER 审中-公开

    公开(公告)号：US20200223988A1

    公开(公告)日：2020-07-16

    申请号：US16836544

    申请日：2020-03-31

    申请人： STEPAN COMPANY

    发明人： Timothy A. BOEBEL ,  Xue Min DONG ,  E. Carolina ROJAS ,  Renee LUKA ,  Gary LUEBKE ,  Paul W. KNOX

    IPC分类号： C08J3/09 ,  A01N25/04 ,  A01N25/14 ,  A01N43/70 ,  A01N37/34 ,  A01N43/50 ,  A01N43/653 ,  C09D5/02 ,  C08L71/02 ,  C08G65/26

    摘要： Copolymers comprising recurring units of a phenyl glycidyl ether and alkylene oxides are disclosed. Some of the copolymers comprise a di- or polyfunctional nucleophilic initiator and recurring units of the phenyl glycidyl ether and an alkylene oxide. The di- or polyfunctional nucleophilic initiator is an alcohol, phenol, amine, thiol, thiophenol, sulfinic acid, or deprotonated species thereof. Other copolymers comprise a monofunctional nucleophilic initiator selected from thiols, thiophenols, aralkylated phenols, sulfinic acids, secondary amines, C10-C20 terpene alcohols, and deprotonated species thereof. Pigments dispersions comprising the copolymers are also disclosed. The copolymers meet the growing needs of the industry with their ease of manufacture, diverse structures, and desirable performance attributes for dispersing a wide range of organic and inorganic pigments. Agricultural applications for the copolymers are also disclosed.