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公开(公告)号：US10266466B2
公开(公告)日：2019-04-23
申请号：US16043317
申请日：2018-07-24
Applicant: Eastman Chemical Company
Inventor： Sumit Chakraborty , Vikram Seshadri , Steven J. Adams , Robert Thomas Hembre , Scott Donald Barnicki
IPC: C07C29/00 , C07F15/00 , B01J31/00 , C07C29/128 , B01J31/24 , C07F15/02 , B01J31/18 , B01J31/20 , C07C29/147 , B01J31/02
Abstract: Iron-based homogeneous catalysts, supported by pincer ligands, are employed in the transfer hydrogenation of esters using C2-C12 alcohols as sacrificial hydrogen donors to produce corresponding alcohols from the esters. No external H2 pressure is required. The reaction can be carried out under ambient pressure.
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公开(公告)号：US08779214B2
公开(公告)日：2014-07-15
申请号：US13896706
申请日：2013-05-17
Applicant: Eastman Chemical Company
IPC: C07C27/04
CPC classification number: B01J31/2404 , B01J31/24 , B01J31/2409 , B01J31/4053 , B01J2531/0238 , B01J2531/821 , C07C29/149 , C07C29/86 , Y02P20/52 , Y02P20/582 , Y02P20/584 , C07C31/202
Abstract: Disclosed is a process for the extractive recovery of a homogeneous ruthenium catalyst from the reaction product of the hydrogenation of glycolic acid, glycolate esters, and/or glycolic acid oligomers with an extractant comprising a hydrophobic solvent and an optional hydrophilic solvent. The ruthenium catalyst, which can include 1,1,1-tris(diaryl- or dialkylphosphinomethyl)alkane ligands, can be recovered from the hydrophobic extract phase by back extraction with a hydrophilic solvent and recycled to a process for the preparation of ethylene glycol by the hydrogenation of glycolic acid and glycolic acid derivatives.
Abstract translation: 公开了从乙醇酸，乙醇酸酯和/或乙醇酸低聚物的氢化与包含疏水性溶剂和任选的亲水性溶剂的萃取剂的反应产物中提取回收均相钌催化剂的方法。 可以通过用亲水溶剂反萃取从疏水萃取相中回收可以包括1,1,1-三（二芳基 - 或二烷基膦基甲基）烷烃配体的钌催化剂，并循环到制备乙二醇的方法中 乙醇酸和乙醇酸衍生物的氢化。
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公开(公告)号：US10829429B2
公开(公告)日：2020-11-10
申请号：US16188958
申请日：2018-11-13
Applicant: Eastman Chemical Company
Inventor： Sumit Chakraborty , Steven J. Adams , Robert Thomas Hembre , Scott Donald Barnicki , David Alan Jenkins
IPC: C07C67/03 , B01J27/232 , B01J31/02 , C07C69/708
Abstract: A process for the transesterification of methyl-2-ethylhexanoate with triethylene glycol to produce triethylene glycol di-2-ethylhexanoate is provided. In the process, methyl-2-ethylhexanoate is combined with triethylene glycol to form a first mixture. The first mixture is heated in the presence of a catalyst to form a second mixture comprising methanol and triethylene glycol di-2-ethylhexanoate. Methanol is separated from the second mixture to yield triethylene glycol di-2-ethylhexanoate. Na2CO3, Cs2CO3, K2CO3, Rb2CO3, sodium methoxide or titanium isopropoxide are suitable catalysts.
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公开(公告)号：US20200148619A1
公开(公告)日：2020-05-14
申请号：US16188958
申请日：2018-11-13
Applicant: Eastman Chemical Company
Inventor： Sumit Chakraborty , Steven J. Adams , Robert Thomas Hembre , Scott Donald Barnicki , David Alan Jenkins
IPC: C07C67/03 , B01J31/02 , B01J27/232
Abstract: A process for the transesterification of methyl-2-ethylhexanoate with triethylene glycol to produce triethylene glycol di-2-ethylhexanoate is provided. In the process, methyl-2-ethylhexanoate is combined with triethylene glycol to form a first mixture. The first mixture is heated in the presence of a catalyst to form a second mixture comprising methanol and triethylene glycol di-2-ethylhexanoate. Methanol is separated from the second mixture to yield triethylene glycol di-2-ethylhexanoate. Na2CO3, Cs2CO3, K2CO3, Rb2CO3, sodium methoxide or titanium isopropoxide are suitable catalysts.
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公开(公告)号：US10435349B2
公开(公告)日：2019-10-08
申请号：US16043308
申请日：2018-07-24
Applicant: Eastman Chemical Company
Inventor： Sumit Chakraborty , Steven J. Adams , Robert Thomas Hembre , Scott Donald Barnicki , Michael Richard Laningham , Gerarld Wayne Ollis , Randy Lynn Jennings
IPC: C07C69/013 , C07C69/003 , C07C67/00 , C07F17/00 , C07F15/00 , B01J31/24 , C07F15/02 , B01J31/18 , B01J31/20
Abstract: A process for preparing a variety of secondary and tertiary alkyl formate esters via the coupling of methanol and secondary (or tertiary) alcohols. Iron-based catalysts, supported by pincer ligands, are employed to produce these formate esters in high yields and unprecedentedly high selectivities (>99%). Remarkably, the coupling strategy is also applicable to bulkier tertiary alcohols, which afford corresponding tertiary formate esters in moderately high yields and high selectivities.
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Patent Agency Ranking
公开(公告)号：US10011485B2
公开(公告)日：2018-07-03
申请号：US15440056
申请日：2017-02-23
Applicant: EASTMAN CHEMICAL COMPANY
Inventor： Scott Donald Barnicki , Robert Thomas Hembre , Elaine Beatrice MacKenzie , Joy Lynn Laningham , Michael Richard Laningham , Shane Kipley Kirk , Larry Wayne Blair , Sumit Chakraborty , Venkateswarlu Bhamidi , Guoxiong Hua , John Derek Woollins
IPC: C01B17/02 , C01B17/12 , C07D341/00
CPC classification number: C01B17/0253 , C01B17/0243 , C01B17/12 , C07D341/00
Abstract: The present invention relates to a method for the manufacture of cyclododecasulfur, a cyclic sulfur allotrope wherein the number of sulfur (S) atoms in the allotrope's homocyclic ring is 12. The method includes reacting a metallasulfur derivative with an oxidizing agent in a reaction zone to form a cyclododecasulfur-containing reaction mixture.
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公开(公告)号：US20160229774A1
公开(公告)日：2016-08-11
申请号：US15133561
申请日：2016-04-20
Applicant: Eastman Chemical Company
Inventor： Robert Thomas Hembre , Venkata Bharat Ram Boppana , Scott Donald Barnicki , Shane Kipley Kirk
IPC: C07C31/135
CPC classification number: C07C31/1355 , C07C29/149 , C07C51/36 , C07C2601/14 , C07C61/08 , C07C61/09 , C07C31/276
Abstract: This invention relates to hydrogenation processes for making cyclohexane compounds. More specifically, this invention relates to hydrogenation processes in the presence of tertiary amide solvent compounds, as well as compositions that can result from such processes. The invention thus provides processes for making cyclohexanecarboxylic acid compounds and processes for making hydroxymethylcyclohexane compounds.
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公开(公告)号：US09346737B2
公开(公告)日：2016-05-24
申请号：US14143914
申请日：2013-12-30
Applicant: Eastman Chemical Company
Inventor： Robert Thomas Hembre , Venkata Bharat Ram Boppana , Scott Donald Barnicki , Shane Kipley Kirk
IPC: C07C51/36 , C07C29/149
CPC classification number: C07C31/1355 , C07C29/149 , C07C51/36 , C07C2601/14 , C07C61/08 , C07C61/09 , C07C31/276
Abstract: This invention relates to hydrogenation processes for making cyclohexane compounds. More specifically, this invention relates to hydrogenation processes in the presence of tertiary amide solvent compounds, as well as compositions that can result from such processes. The invention thus provides processes for making cyclohexanecarboxylic acid compounds and processes for making hydroxymethylcyclohexane compounds.
Abstract translation: 本发明涉及制备环己烷化合物的氢化方法。 更具体地，本发明涉及在叔酰胺溶剂化合物存在下的氢化方法，以及可由此类方法产生的组合物。 因此，本发明提供了制备环己烷羧酸化合物的方法和制备羟甲基环己烷化合物的方法。
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公开(公告)号：US20250002676A1
公开(公告)日：2025-01-02
申请号：US18703837
申请日：2022-10-25
Applicant: Eastman Chemical Company
Inventor： Scott Donald Barnicki , Nathan Mitchell West , Pinguan Zheng
Abstract: Processes for recovering dialkyl terephthalates. The processes can include exposing a polyester composition to one or more glycols to depolymerization conditions thereby providing one or more depolymerization products. The one or more glycols can include diethylene glycol (DEG), triethylene glycol (TEG), 1,4-cyclohexanedimethanol (CHDM), poly(ethylene glycol) (PEG), neopentyl glycol (NPG), propane diol (PDO), butanediol (BDO), 2-methyl-2,4-pentanediol (MP diol), poly(tetramethylene ether)glycol (PTMG), or a combination thereof. The one or more depolymerization products can be exposed to an alcoholysis process to recover dialkyl terephthalate. Optionally, ethylene glycol (EG) produced from the depolymerization process can be recovered and re-used in a subsequent dialkyl terephthalate recovery or other process.
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公开(公告)号：US20240409488A1
公开(公告)日：2024-12-12
申请号：US18703820
申请日：2022-10-25
Applicant: Eastman Chemical Company
Inventor： Pinguan Zheng , Hannah Grace Harris , Scott Donald Barnicki
IPC: C07C67/02
Abstract: Processes for recovering dialkyl terephthalates. The processes can include exposing a polyester composition to one or more glycols to depolymerization conditions thereby providing one or more depolymerization products. The one or more depolymerization products can be exposed to an alcoholysis process to recover dialkyl terephthalate. Optionally, the one or more glycols can be recycled and re-used in a subsequent dialkyl terephthalate recovery or other process.
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