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公开(公告)号：US11059933B2
公开(公告)日：2021-07-13
申请号：US16556396
申请日：2019-08-30
Applicant: STEPAN COMPANY
Inventor： Warren A. Kaplan , Jennifer S. Westfall
Abstract: Isocyanate-modified polyester-epoxide polymer (i-PEEP) compositions are disclosed. The i-PEEP compositions comprise a reaction product of a polyepoxide compound, a polyisocyanate, and a polyester polyol composition. The ratio of epoxy equivalents to hydroxyl equivalents is within the range of 0.2 to 2. The i-PEEP index as defined herein is within the range of 100 to 200. The i-PEEP composition has a Tg within the range of −30° C. to 35° C. Low- and elevated-temperature processes catalyzed by bases or Lewis acids for making the i-PEEP 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 the polyamines typically used to cure epoxy systems.
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公开(公告)号：US20210139815A1
公开(公告)日：2021-05-13
申请号：US17151441
申请日：2021-01-18
Applicant: STEPAN COMPANY
Inventor： Ronald A. MASTERS , Mona Marie KNOCK , Patrick Shane WOLFE , Timothy A. BOEBEL , Xue Min DONG , Dennis S. MURPHY
Abstract: Dilutable concentrates useful for hard surface cleaners with improved film/streak performance on high-energy surfaces are disclosed. The concentrates comprise a nonionic alkoxylated surfactant and a polyetheramine. A relatively minor proportion of a polyetheramine can resolve film/streak issues that characterize hard surface cleaners formulated with nonionic surfactants. The efficacy of polyetheramines for improving film/streak performance of hard surface cleaners formulated with nonionic alkoxylated surfactants far exceeds the benefits available from known improvements, such as the use of hydrotropes. Other inventive dilutable concentrates and hard surface cleaners comprise an amine-functional hydrophobe and an auxiliary surfactant. Still other dilutable concentrates or hard surface cleaners comprise a nonionic alkoxylated surfactant and lactic acid. An improved method for measuring film/streak properties of hard surface cleaners is also disclosed.
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公开(公告)号：US20210128432A1
公开(公告)日：2021-05-06
申请号：US17145999
申请日：2021-01-11
Applicant: Stepan Company
Inventor： James A. Faunce , Renata A. Butikas , Randal J. Bernhardt , Sarah E. Kovach , Teresa Germain , Patrick Shane Wolfe , Leonard Frank Zaporowski , Anatoliy A. Dameshek
IPC: A61K8/41 , A61K8/9789 , A61K8/37 , A61Q5/02
Abstract: Esterquat compositions are disclosed that comprise, based on the weight of the composition, 0% to about 70% by weight of a solvent, and about 30% to 100% by weight of a mixture comprising about 50% to about 80% by weight, based on the weight of the mixture, of esterquats and about 20% to about 50% by weight, based on the weight of the mixture, of mono- and diglycerides. The esterquat compositions can be prepared by the direct esterification of a natural oil with an alkanolamine, followed by quaternization in the presence of the solvent. The esterquat compositions can be formulated into hair care compositions that provide improved wet and dry combing properties.
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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.
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公开(公告)号：US10961483B2
公开(公告)日：2021-03-30
申请号：US15740224
申请日：2016-06-28
Applicant: STEPAN COMPANY
Inventor： Joseph C. Rongione
IPC: C12P7/64 , C11C1/04 , C11C1/10 , C11C1/08 , C12N9/20 , C07C31/08 , C07C47/54 , C07C47/548 , C07C47/58
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.
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Patent Agency Ranking
公开(公告)号：US20210040131A1
公开(公告)日：2021-02-11
申请号：US17079162
申请日：2020-10-23
Applicant: Stepan Company
Inventor： Nattaporn Lohitharn
Abstract: Provided is a method for decolorizing and optionally neutralizing a rhamnolipid composition comprising treating said composition with a percarbonate salt as well as the decolorized and optionally neutralized composition obtainable therefrom. Also provided is a method for improving the quality of wastewater generated during said method.
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公开(公告)号：US20210024744A1
公开(公告)日：2021-01-28
申请号：US17066741
申请日：2020-10-09
Applicant: STEPAN COMPANY
Inventor： Warren A. KAPLAN , Zhenhua CUI , Sarah WOLEK
Abstract: Blends comprising an aromatic polyester polyol and a 1 to 10 wt. % of a fatty acid derivative are disclosed. The fatty acid derivative is a C8 to C18 fatty acid ester or a C8 to C18 fatty acid amide. Also disclosed are rigid PU or PU-PIR foams that comprise a reaction product of water, a catalyst, a foam-stabilizing surfactant, a polyisocyanate, a blowing agent, and the polyester polyol/fatty acid derivative blends. Surprisingly, low-temperature R-values of rigid foams based on pentane blowing agents can be improved significantly by using blends of aromatic polyester polyols and a minor proportion of readily available fatty acid derivatives. In some aspects, the difference between initial R-values of the foam measured at 75° F. and 40° F. is at least 5% greater than that of a similar foam prepared in the absence of the fatty acid derivative.
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公开(公告)号：US10829507B2
公开(公告)日：2020-11-10
申请号：US15611045
申请日：2017-06-01
Applicant: Stepan Company
Inventor： Nattaporn Lohitharn
Abstract: Provided is a method for decolorizing and optionally neutralizing a rhamnolipid composition comprising treating said composition with a percarbonate salt as well as the decolorized and optionally neutralized composition obtainable therefrom. Also provided is a method for improving the quality of wastewater generated during said method.
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公开(公告)号：US20200217652A1
公开(公告)日：2020-07-09
申请号：US16640556
申请日：2018-08-03
Applicant: STEPAN COMPANY
Inventor： Thomas K. Johnson, Jr. , David J. Norberg , Daniel Yocius
Abstract: Methods and systems for determining the integrity of a manufactured board are disclosed. An example system includes a testing platform configured to secure the manufactured board, a sensor configured to measure a parameter corresponding to a flatness of a surface of the board, and a controller. The controller is configured to identify regions on the surface corresponding to one of a peak or a valley based on the parameter, and calculate a score representing the integrity of the manufactured board based on the identified peaks and valleys. The controller adjusts a flow rate, a pressure, a temperature, and position of a deposited substance in a manufacturing process based on a comparison with a height of the peak and/or a depth of the valley to stored peak heights and/or valley depths. In some examples, a mechanical tester determines a compressive strength and a density of the board at the identified regions.
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公开(公告)号：US20200178523A1
公开(公告)日：2020-06-11
申请号：US16790445
申请日：2020-02-13
Applicant: Stepan Company
Inventor： Kelly Buchek , Eric M. Weber , Elodie Shaw , Krista L. Turpin , Andrea B. E. Brayton , Julien Guillan , Dave R. Allen
Abstract: Agricultural compositions that employ structured surfactant systems to suspend water-insoluble or sparingly soluble agricultural actives and/or adjuvants are disclosed. Also disclosed are agricultural compositions that combine structured surfactant systems with electrolytes to form structured electrolyte compositions. The structured surfactant systems, both with and without electrolyte, suspend one or more agricultural actives and/or crop oil and non-aqueous adjuvants to provide agricultural compositions that can combine combinations of actives in a single, stable composition.
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