-
公开(公告)号：US20220251441A1
公开(公告)日：2022-08-11
申请号：US17617729
申请日：2020-06-15
Applicant: STEPAN COMPANY
Inventor： Douglas Kip HILLSHAFER , Sarah WOLEK
Abstract: A hydraulic fracturing method for recovering oil from a low-temperature subterranean oil formation is disclosed. Before, during, or after inducing hydraulic fracturing within the formation, a particulate, degradable polyester diverting agent is introduced into the formation in an amount effective to improve oil production from the formation. The diverting agent is allowed to degrade, and oil is recovered. The diverting agent has a melting point greater than the average temperature of the formation and is selected from: (i) ethylene glycol succinates; (ii) acid-terminated ethylene glycol succinates; (iii) acid-terminated polyglycolic acids; (iv) acid-terminated polylactic acids; (v) mixtures of any of (i) through (iv) with a half acid ester; and (vi) mixtures of polylactic acids or polyglycolic acids with a half acid ester. These easily synthesized classes of particulate polyester diverting agents degrade more effectively than polylactides under the conditions present in low-temperature wells and should help to enhance well productivity.
-
公开(公告)号：US20220091599A1
公开(公告)日：2022-03-24
申请号：US17542087
申请日：2021-12-03
Applicant: Stepan Company
Inventor： Daniel Yocius , David J. Norberg , Sean O'Cuanaigh
IPC: G05B19/418 , C08G18/08
Abstract: Methods and systems for manufacturing a foam board system are disclosed. In some examples, a system includes an applicator to distribute one or more fluids onto a substrate. One or more sensors configured to measure one or more characteristics of the one or more fluids. A control circuitry is configured to compare the one or more measured characteristics to one or more threshold characteristics, and to adjust one or more operating parameters of the system in response to a characteristic of the one or more measured characteristics falling outside a threshold of the one or more threshold characteristics.
-
公开(公告)号：US11009342B2
公开(公告)日：2021-05-18
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.
-
公开(公告)号：US11008595B2
公开(公告)日：2021-05-18
申请号：US16185924
申请日：2018-11-09
Applicant: Stepan Company
Inventor： Vladimir Dragan
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.
-
公开(公告)号：US20210115315A1
公开(公告)日：2021-04-22
申请号：US17133320
申请日：2020-12-23
Applicant: STEPAN COMPANY
Inventor： Yongling Ginger REN , Aaron SANDERS , Jonathan MOHANDESSI
IPC: C09K8/035
Abstract: A method for demulsifying a recovered drilling fluid is disclosed. A recovered drilling fluid is first combined with dilution water and a diethanolamine-based C8-C18 alkanolamide demulsifying agent. The recovered drilling fluid comprises hydrocarbons, a brine having at least 25% total dissolved solids, an emulsifier, and undissolved oil-wetted solids. In a second step, the mixture is separated, or is allowed to separate, into three distinct phases, including a clear oil phase comprising the hydrocarbons, a clear brine phase, and a water-wetted solid phase. Compositions suitable for use as demulsifiers and demulsified compositions are also disclosed. The alkanolamide demulsifying agents enable rapid, clean separation of phases and efficient recovery of 80% or more of the oil phase from the recovered drilling fluid
-
Patent Agency Ranking
公开(公告)号：US20200347176A1
公开(公告)日：2020-11-05
申请号：US16936006
申请日：2020-07-22
Applicant: Stepan Company
Inventor： Michael E. O'Brien , Jeffrey R. Janos
IPC: C08G18/42 , C09D175/06 , C08G18/78 , C08G18/76
Abstract: Polyester polyols for use in low-VOC polyurethane compositions are disclosed. The polyester polyols are the reaction product of at least one aliphatic polycarboxylic acid, at least one alkoxylated polyalcohol having a functionality of 2.0 or greater, and one or more polyalcohols other than an alkoxylated polyalcohol. The polyester polyols can be formulated into polyurethane compositions to obtain a polyurethane having a low VOC content. The polyurethane composition is particularly suitable for polyurethane coating applications.
-
公开(公告)号：US10745347B2
公开(公告)日：2020-08-18
申请号：US14395835
申请日：2013-03-13
Applicant: Stepan Company
Inventor： David R. Allen , Marcos Alonso , Mary Beddaoui , Randal J. Bernhardt , Aaron Brown , Scott Dillavou , Xue Min Dong , Wilma Gorman , John C. Hutchison , Gary Luebke , Renee Luka , Franz Luxem , Andrew D Malec , Ronald A. Masters , Dennis S. Murphy , Nicholas Pendleton , Irma Ryklin , Patti Skelton , Brian Sook , Chris Spaulding , Krista Turpin , Gregory Wallace , Michael Wiester , Patrick Shane Wolfe
IPC: C07C309/10 , C07C29/147 , C07C309/08 , A01N25/30 , B01F17/00 , C11D1/37 , C04B38/10 , C07C303/32 , C07C303/14 , C09D7/63 , A61K8/46 , C11D1/14 , C11D1/29 , C07C41/06 , C11D1/66
Abstract: Sulfate and sulfonate derivatives of unsaturated fatty alcohols, processes for making them, and methods of using them are disclosed. In one aspect, a monounsaturated fatty alcohol composition is made by reducing a metathesis-derived monounsaturated alkyl ester. The fatty alcohol composition is then converted to a sulfate or sulfonate derivative by one or more of alkoxylation, sulfation, sulfonation, and sulfitation. Of particular interest are the sulfate and ether sulfate derivatives.
-
公开(公告)号：US20200255593A1
公开(公告)日：2020-08-13
申请号：US16836676
申请日：2020-03-31
Applicant: STEPAN COMPANY
Inventor： Timothy A. BOEBEL , Xue Min DONG , E. Carolina ROJAS , Renee LUKA , Gary LUEBKE
Abstract: 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.
-
公开(公告)号：US20200223988A1
公开(公告)日：2020-07-16
申请号：US16836544
申请日：2020-03-31
Applicant: STEPAN COMPANY
Inventor： Timothy A. BOEBEL , Xue Min DONG , E. Carolina ROJAS , Renee LUKA , Gary LUEBKE , Paul W. KNOX
IPC: C08J3/09 , A01N25/04 , A01N25/14 , A01N43/70 , A01N37/34 , A01N43/50 , A01N43/653 , C09D5/02 , C08L71/02 , C08G65/26
Abstract: 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.
-
公开(公告)号：US20200085042A1
公开(公告)日：2020-03-19
申请号：US16598053
申请日：2019-10-10
Applicant: Stepan Company
Inventor： Sangeeta Ganguly-Mink , Kenneth J. Littel , Shui Ping Zhu
Abstract: A disinfectant composition that is effective against tuberculosis-causing bacteria is disclosed. The composition contains a disinfectant agent that is a combination of biocidal quaternary ammonium compound and an N,N-di-substituted alkylamide water insoluble solvent. The composition can be a concentrated formulation or a ready-to-use formulation. Methods of disinfecting surfaces containing tuberculosis-causing bacteria are also disclosed.
-
-
-
-
-
-
-
-
-
Search Results
218
records
(took 0.024 seconds)
