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公开(公告)号：US11142782B2
公开(公告)日：2021-10-12
申请号：US16048945
申请日：2018-07-30
Applicant: Stepan Company
Inventor： Nattaporn Lohitharn
Abstract: Provided is a method for improving the yield of rhamnolipids comprising culturing in medium containing a triglyceride containing oil and sweetener as a carbon source.
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公开(公告)号：US20210309895A1
公开(公告)日：2021-10-07
申请号：US17348199
申请日：2021-06-15
Applicant: STEPAN COMPANY
Inventor： Michael E. O'BRIEN , Warren A. KAPLAN , Jennifer S. WESTFALL
IPC: C09J163/04
Abstract: One-component (1K) adhesive compositions (“PEEP” compositions) and a process for making them are disclosed. A polyepoxide is reacted with a polyether polyol composition, a polyester polyol composition, or both in the presence of a heat-activated Lewis acid catalyst at a temperature within the range of 100° C. to 220° C. for a time effective to cure the adhesive. The compositions are storage-stable under ambient conditions. Compared with conventional epoxy compositions, the 1K PEEP compositions offer improved room temperature lap shear strength, better resilience, and higher elongation. The 1K PEEP systems deliver a desirable balance of physical and mechanical properties while avoiding polyisocyanates and polyamine crosslinkers.
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公开(公告)号：US20210107832A1
公开(公告)日：2021-04-15
申请号：US16497606
申请日：2018-04-05
Applicant: STEPAN COMPANY , SAINT-GOBAIN PLACO
Inventor： Brian K. MIROUS , Hamouda JAFFEL
Abstract: A surfactant composition is disclosed comprising a first alkyl sulfate surfactant, optionally a second alkyl sulfate surfactant, and optionally an alkyl ether sulfate. The first and second alkyl sulfate surfactants have Formula (1): R1—OSO3−+M1(1) and the ether sulfate has Formula (2): R2—(OCH2CH2)yOSO3−30 M2(2) in which R1 and R2 are independently selected linear or branched alkyl or a combination thereof having from 6 to 14 carbon atoms, y has an average value from 0.1 to 5, and M1 and M2 are cations independently selected from sodium, calcium, ammonium, or a combination of two or all of these. Use of the composition as a foaming agent for gypsum slurries, and of the gypsum slurries for formation of gypsum boards, are disclosed.
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公开(公告)号：US10882946B2
公开(公告)日：2021-01-05
申请号：US16327086
申请日：2017-08-08
Applicant: STEPAN COMPANY
Inventor： Warren A. Kaplan , Jennifer S. Westfall
Abstract: Polyester-epoxide polymer (PEEP) compositions are disclosed. The PEEP compositions comprise a reaction product of a polyepoxide compound (eq. wt. 125 to 250 g/eq.) and a polyester polyol composition. The ratio of epoxy equivalents to hydroxyl equivalents is within the range of 0.8 to 3.5. The PEEP composition has a Tg within the range of −40° C. to 60° C. Elevated temperature-cure and low temperature-cure processes for making the PEEP compositions are also disclosed. In a simple yet innovative approach, a new class of polymers useful for adhesives, coatings, elastomers, and other valuable products is assembled from readily available starting materials without reliance on polyisocyanates or polyamines. The PEEP compositions have increased elongation and lower Tg when compared with traditional epoxy products.
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公开(公告)号：US20200377646A1
公开(公告)日：2020-12-03
申请号：US16994220
申请日：2020-08-14
Applicant: STEPAN COMPANY
Inventor： Zhenhua CUI , Warren A. KAPLAN , Sarah WOLEK
Abstract: Polyether- or polyester-epoxide polymer (PEEP) compositions are disclosed. The compositions comprise reaction products of a polyepoxide compound and a polyol composition. The polyol composition has a melting point within the range of 20° C. to 100° C. and a hydroxyl number less than 35 mg KOH/g. The PEEP composition is a solid-solid phase-change material. As measured by differential scanning calorimetry (DSC) at a heating/cooling rate of 10° C./minute, the PEEP composition has a transition temperature within the range of −10° C. to 70° C., a latent heat at the transition temperature within the range of 30 to 200 J/g, and little or no detectable hysteresis or supercooling upon thermal cycling over at least five heating/cooling cycles that encompass the transition temperature. The PEEP compositions should enable formulators to manage thermal energy changes in many practical applications, including automotive, marine or aircraft parts, building materials, appliance insulation, electronics, textiles, garments, and paints or coatings.
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Patent Agency Ranking
公开(公告)号：US10781405B2
公开(公告)日：2020-09-22
申请号：US16193143
申请日：2018-11-16
Applicant: STEPAN COMPANY
Inventor： Dennis S. Murphy , Franz J. Luxem , Patrick Shane Wolfe
IPC: C11D1/00 , C11D1/12 , C11D1/72 , C11D3/37 , B08B3/04 , C11D11/00 , C11D3/30 , C11D1/14 , C11D1/22 , C11D1/66 , C11D3/00 , C11D3/386
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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公开(公告)号：US10694743B2
公开(公告)日：2020-06-30
申请号：US15323188
申请日：2015-06-09
Applicant: Stepan Company
Inventor： Dave R. Allen , Andrew D. Malec
Abstract: Agricultural compositions having reduced aquatic toxicity are disclosed. The compositions comprise an agricultural active, a monounsaturated C10-C12 fatty amine ethoxylate, and optionally water. The compositions may further comprise an auxiliary surfactant, a solvent, or both. In certain preferred aspects, the agricultural active is a glyphosate salt. Agricultural compositions comprising a monounsaturated C10-C12 fatty amine ethoxylate have good herbicidal efficacy. Unexpectedly, the monounsaturated C10-C12 fatty amine ethoxylates have reduced aquatic toxicity when compared with their saturated analogs.
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公开(公告)号：US20200182031A1
公开(公告)日：2020-06-11
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
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.
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公开(公告)号：US10590749B2
公开(公告)日：2020-03-17
申请号：US15503293
申请日：2015-07-31
Applicant: Stepan Company
Inventor： Aaron Sanders , Gregory P. Dado , Brian Holland , Xue Min Dong , E. Carolina Rojas
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.
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公开(公告)号：US20200010666A1
公开(公告)日：2020-01-09
申请号：US16571970
申请日：2019-09-16
Applicant: STEPAN COMPANY
Inventor： Warren A. KAPLAN , Jennifer S. WESTFALL
Abstract: Polyether-epoxide polymer compositions are disclosed. The compositions comprise a reaction product of a polyepoxide compound and a polyol composition comprising a polyether polyol. The ratio of epoxy equivalents to hydroxyl equivalents is within the range of 0.5:1 to 3:1. The polyether-epoxide composition has a Tg within the range of −40° C. to 60° C. The polyether polyol has a hydroxyl value within the range of 150 to 800 mg KOH/g and an average hydroxyl functionality within the range of 3.5 to 8.0. In some aspects, the polyol composition further comprises a polyester polyol. Low- and elevated-temperature processes catalyzed by bases or Lewis acids for making the polyether-epoxide compositions are also disclosed. In a simple yet innovative approach, a new class of polymers useful for coatings, elastomers, adhesives, sealants, and other valuable products is assembled from readily available starting materials without reliance on polyamines or polyisocyanates.
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