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公开(公告)号：US10570081B2
公开(公告)日：2020-02-25
申请号：US16043324
申请日：2018-07-24
Applicant: Eastman Chemical Company
Inventor： Scott Donald Barnicki , Robert Thomas Hembre , Sumit Chakraborty , Gerald Wayne Ollis , Randy Lynn Jennings , Stijn Van de Vyver
Abstract: Disclosed is a process for recovering formic acid from a formate ester of a C3 to C4 alcohol. Disclosed is also a process for producing formic acid by carbonylating a C3 to C4 alcohol, hydrolyzing the formate ester of the alcohol, and recovering a formic acid product. The alcohol may be dried and returned to the reactor. The process enables a more energy efficient production of formic acid than the carbonylation of methanol to produce methyl formate.
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12.发明申请公开(公告)号：US20190039992A1
公开(公告)日：2019-02-07
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 , C07C67/00 , C07C69/003 , C07F15/02 , B01J31/24
CPC classification number: C07C69/013 , B01J31/189 , B01J31/20 , B01J31/24 , B01J2231/49 , B01J2231/641 , B01J2231/763 , B01J2531/0244 , B01J2531/842 , C01B2203/0277 , C01B2203/04 , C01B2203/048 , C07C67/00 , C07C69/003 , C07F15/0046 , C07F15/025 , C07F17/00 , C07C69/06
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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13.发明申请公开(公告)号：US20190039990A1
公开(公告)日：2019-02-07
申请号：US16043303
申请日：2018-07-24
Applicant: Eastman Chemical Company
Inventor： Sumit Chakraborty , Steven J. Adams , Robert Thomas Hembre , Scott Donald Barnicki
Abstract: Iron-based homogeneous catalysts, supported by pincer ligands, are employed in the catalytic dehydrocoupling of methanol to produce methyl formate and hydrogen. As both methanol and methyl formate are volatile materials, they can be readily separated from the catalyst by applying vacuum at room temperature. The hydrogen by-product of the reaction may be isolated and utilized as a feedstock in other chemical transformations.
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公开(公告)号：US20190039985A1
公开(公告)日：2019-02-07
申请号：US16043329
申请日：2018-07-24
Applicant: Eastman Chemical Company
Inventor： Scott Donald Barnicki , Robert Thomas Hembre , Sumit Chakraborty , Vickie Haygood Osborne , Michael Richard Laningham , Stijn Van de Vyver
IPC: C07C51/09
Abstract: Disclosed is a process for recovering formic acid from a formate ester that allows for recovery of a formic acid product comprising greater than 75 wt. % formic acid. Disclosed is also a process for producing formic acid by carbonylating a carrier alcohol, hydrolyzing the formate ester of the carrier alcohol, and recovering a formic acid product comprising greater than 70 wt. % formic acid. Discloses are carrier alcohols that enable more favorable hydrolysis equilibriums and/or distillation sequences.
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公开(公告)号：US20190039984A1
公开(公告)日：2019-02-07
申请号：US16043324
申请日：2018-07-24
Applicant: Eastman Chemical Company
Inventor： Scott Donald Barnicki , Robert Thomas Hembre , Sumit Chakraborty , Gerald Wayne Ollis , Randy Lynn Jennings , Stijn Van de Vyver
IPC: C07C51/09
Abstract: Disclosed is a process for recovering formic acid from a formate ester of a C3 to C4 alcohol. Disclosed is also a process for producing formic acid by carbonylating a C3 to C4 alcohol, hydrolyzing the formate ester of the alcohol, and recovering a formic acid product. The alcohol may be dried and returned to the reactor. The process enables a more energy efficient production of formic acid than the carbonylation of methanol to produce methyl formate.
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Patent Agency Ranking
公开(公告)号：US20220251020A1
公开(公告)日：2022-08-11
申请号：US17309384
申请日：2019-11-12
Applicant: Eastman Chemical Company
Inventor： William Christopher Ketchie , Sumit Chakraborty , Leslie Sharon Depew
Abstract: A process for direct esterification of an alkyl aldehyde with an alkyl alcohol to produce an alkyl ester is disclosed. The process comprises reacting an alkyl aldehyde with an alkyl alcohol in the presence of an Au/TiOa catalyst, a base and an enal or oxygen to form an ester and an aldehyde. The process avoids liberation of water and avoids the step of oxidation of the alkyl aldehyde to an alkyl acid.
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公开(公告)号：US11059722B2
公开(公告)日：2021-07-13
申请号：US16807671
申请日：2020-03-03
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
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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18.发明授权公开(公告)号：US10266467B2
公开(公告)日：2019-04-23
申请号：US16043320
申请日：2018-07-24
Applicant: Eastman Chemical Company
Inventor： Sumit Chakraborty , Robert Thomas Hembre
IPC: C07C29/00 , C07F15/00 , B01J31/00 , C07C29/128 , B01J31/24 , C07F15/02 , B01J31/18 , B01J31/20 , C07C29/147 , B01J31/02
Abstract: A transfer hydrogenation process for forming vicinal diols by hydrogenating 1,2-dioxygenated organic compounds using alcohols as the reducing agent instead of the traditional H2 gas. The transfer hydrogenation is carried out under milder conditions of temperature and pressure than is typical for ester hydrogenation with H2. The milder conditions of operation provide benefits, such as lower operating and capital costs for industrial scale production as well as savings in product purification due to the avoidance of by-products from exposure of reaction mixtures and products to high temperatures.
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19.发明申请公开(公告)号：US20190039991A1
公开(公告)日：2019-02-07
申请号：US16043312
申请日：2018-07-24
Applicant: Eastman Chemical Company
Inventor： Sumit Chakraborty , Steven J. Adams , Robert Thomas Hembre , Scott Donald Barnicki
IPC: C07C67/00 , C07C69/003 , C07F15/02 , B01J31/24 , C01B3/02
Abstract: Iron-based homogeneous catalysts, supported by pincer ligands, are employed in the catalytic dehydrocoupling of ethanol to produce ethyl acetate and hydrogen. As both ethanol and ethyl acetate are volatile materials, they can be readily separated from the catalyst by applying vacuum at room temperature. The hydrogen by-product of the reaction may be isolated and utilized as a feedstock in other chemical transformations.
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公开(公告)号：US20190039977A1
公开(公告)日：2019-02-07
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: C07C29/128 , C07F15/02 , B01J31/24
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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