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公开(公告)号：US20180079984A1
公开(公告)日：2018-03-22
申请号：US15703388
申请日：2017-09-13
Applicant: LANXESS Solutions US Inc.
Inventor： Robert G. Rowland
IPC: C10M133/54 , C10M133/12 , C10M105/00 , C10M169/04 , C07C217/92
Abstract: Alkylated diaryl amines further substituted by an alkoxy group on one or more aryl carbon atoms exhibit excellent antioxidant activity in lubricant compositions.
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Patent Agency Ranking
公开(公告)号：US11761287B2
公开(公告)日：2023-09-19
申请号：US17426682
申请日：2020-01-31
Applicant: LANXESS SOLUTIONS US INC.
Inventor： Matthew P. Burdzy , Thomas Harald Peter
CPC classification number: E21B33/085 , C09K3/1021 , C09K2003/1053
Abstract: The present invention relates to sealing elements for blowout preventers comprising a sealing interface region, and a second region, wherein said sealing interface region is formed of a first polymer and said second region is formed of a second polymer, the first and second polymers having different Shore A hardnesses, including sealing elements made of dual hardness polyurethane.
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公开(公告)号：US11021641B2
公开(公告)日：2021-06-01
申请号：US16401650
申请日：2019-05-02
Applicant: LANXESS Solutions US Inc.
Inventor： Thomas G. Ray , Colin H. Keene , David J. Sikora , David W. Bartley , John Warner , Justin Whitfield , Dwight Tshudy , Joni P. Williams
Abstract: Compounds are identified that act as crystallization suppressants when added to clear brine fluids, significantly lowering the true crystallization temperatures of the brines, and allowing for higher salt content in clear brine fluids. The crystallization suppressants of the invention also allow for the preparation of higher density zinc free brines.
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公开(公告)号：US20210040411A1
公开(公告)日：2021-02-11
申请号：US16969136
申请日：2019-02-08
Applicant: LANXESS Solutions US Inc.
Inventor： Frank J. DeBlase , Joseph Stieber , Kenneth Cory MacLeod
IPC: C10M129/72 , C10M133/16 , C10M137/10 , C10M169/04
Abstract: Certain citric esters and amides, and certain mixtures thereof, e.g., mixtures comprising citrate oligomers, exhibit excellent anti-wear activity in lubricants. Many of these compounds or mixtures of compounds also exhibit a high degree of anti-wear synergy in combination with zinc dihydrocarbyldithiophosphates. The compounds of the invention are thus valuable tools that can allow one to reduce the amounts of zinc, and phosphates, that are used in the lubricant without sacrificing anti-wear performance.
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公开(公告)号：US10351436B2
公开(公告)日：2019-07-16
申请号：US15598011
申请日：2017-05-17
Applicant: LANXESS SOLUTIONS US, INC.
Inventor： Thomas G. Ray , David W. Bartley , Hugh Broadhurst , Nate Goodwin
Abstract: Bromine containing compounds, such as calcium bromide, sodium bromide and the like, are prepared in high purity and more quickly with less waste by using a process with two bromination stages and often a third step wherein the crude product mixture can be adjusted to meet specific product requirements. In the first bromination stage, the majority, but not all, of a substrate is brominated using a reductive bromination reaction, the remaining unreacted substrate is converted to product in the second stage through another a reductive bromination reaction, although the specific reagents may be different, wherein the addition of bromine and a reducing agent are carefully monitored.
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公开(公告)号：US20180016382A1
公开(公告)日：2018-01-18
申请号：US15649746
申请日：2017-07-14
Applicant: LANXESS SOLUTIONS US INC.
Inventor： Zhenya Zhu , Gerald King , George Brereton
CPC classification number: C08G18/44 , C08G18/10 , C08G18/12 , C08G18/4202 , C08G18/4286 , C08G18/73 , C08G18/7614 , C08G85/002 , C08G18/3215 , C08G18/3814
Abstract: Polycarbonate based polyurethane prepolymers having a low amount of free isocyanate monomer with excellent handling and processing properties are prepared and used in the preparation of cast polyurethane polymers with excellent performance and handling properties.
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