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公开(公告)号：US09056824B2
公开(公告)日：2015-06-16
申请号：US13755879
申请日：2013-01-31
Applicant: Eastman Chemical Company
Inventor： Kenneth Wayne Hampton, Jr. , Eugene H. Brown
Abstract: An improved process for preparing hydroxy aldehydes, such as hydroxypivaldehyde, is provided. Specifically, the process employs an alkaline additive for separating by-product amine salts from a hydroxy aldehyde and other reaction products formed in the process of preparing a hydroxy aldehyde using an amine catalyst.
Abstract translation: 提供了一种制备羟基醛的改进方法，如羟基甲醛。 具体地说，该方法采用碱性添加剂来分离副产物胺盐与羟醛和使用胺催化剂制备羟基醛的过程中形成的其它反应产物。
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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：US12152005B2
公开(公告)日：2024-11-26
申请号：US17441726
申请日：2020-03-25
Applicant: EASTMAN CHEMICAL COMPANY
IPC: C07C51/09
Abstract: Processes are disclosed for preparing carboxylic acids from organic esters, the processes comprising contacting an ester with water in the presence of an acid catalyst and a homogenizing solvent at conditions effective to form a carboxylic acid. The homogenizing solvent is present in an amount sufficient to form a single-phase reaction mixture comprising the ester, water, and homogenizing solvent. The homogenizing solvent may be selected from acetonitrile, dimethyl sulfoxide, and 1,4-dioxane.
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公开(公告)号：US08710278B1
公开(公告)日：2014-04-29
申请号：US13755910
申请日：2013-01-31
Applicant: Eastman Chemical Company
Inventor： Kenneth Wayne Hampton, Jr. , Eugene H. Brown , Thomas K. Brown , Amy K. Paris , Kevin S. Howe , Thomas Allen Puckette
CPC classification number: C07C29/141 , C07C45/45 , C07C45/75 , C07C47/19 , C07C31/20
Abstract: A process for producing polyols (such as neopentyl glycol) is disclosed which comprises reacting formaldehyde and another aldehyde in the presence of a trialkylamine catalyst and a base promoter to form an Aldol condensation reaction product. The base promoter improves removal of nitrogen containing salts prior to hydrogenation of the hydroxy aldehyde to produce the polyol. The improved process also reduces trialkylamine catalyst usage, improves trialkylamine catalyst recovery, and reduces nitrogen-containing salts prior to hydrogenation.
Abstract translation: 公开了一种制备多元醇（例如新戊二醇）的方法，其包括在三烷基胺催化剂和碱助催化剂存在下使甲醛与另一种醛反应以形成醛醇缩合反应产物。 碱促进剂在羟醛氢化之前改善了含氮盐的去除以产生多元醇。 改进的方法还可减少三烷基胺催化剂的用量，改善三烷基胺催化剂的回收率，并在氢化之前还原含氮盐。
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公开(公告)号：US09512054B2
公开(公告)日：2016-12-06
申请号：US14618436
申请日：2015-02-10
Applicant: Eastman Chemical Company
Inventor： Chad A. Johnson , Xianchun Wu , Kenneth Wayne Hampton, Jr. , Raymond Prescott Cottle , Eugene H. Brown
IPC: C07C41/44 , C07C41/42 , C07C43/13 , B01J23/46 , B01J23/755
CPC classification number: C07C41/44 , B01J23/462 , B01J23/755 , C07C41/42 , C07C43/13
Abstract: There is provided is a method for making a higher purity alcohol comprising: a) contacting an impure alcohol composition comprising: (i) an alcohol compound; and (ii) from about 50 ppm to about 5 weight percent, based on the weight of the impure alcohol composition, of at least one hydrogenable contaminant having an unsaturated bond, with hydrogen in a hydrogenation reactor and in the presence of a hydrogenation catalyst to produce a reaction mixture comprising the alcohol compound and a hydrogenated contaminant product wherein at least 10 mole % of the at least one hydrogenable contaminant in the reaction mixture is converted; and b) separating the alcohol compound from at least a portion of the reaction mixture to produce an enriched alcohol composition having a lower concentration of the hydrogenated contaminant product. There is also provided an alcohol composition having less than about 500 ppm of at least one hydrogenable contaminant.
Abstract translation: 提供了制备高纯度醇的方法，包括：a）使不纯的醇组合物接触，所述不纯的醇组合物包含：（i）醇化合物; 和（ii）基于不纯的醇组合物的重量，约50ppm至约5重量％的至少一种具有不饱和键的可氢化污染物与氢气在氢化反应器中和在氢化催化剂存在下 产生包含醇化合物和氢化污染物产物的反应混合物，其中反应混合物中至少10摩尔％的至少一种可氢化污染物被转化; 和b）从所述反应混合物的至少一部分分离所述醇化合物以产生具有较低浓度的所述氢化污染物产物的富集醇组合物。 还提供了具有小于约500ppm的至少一种可氢化污染物的醇组合物。
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Patent Agency Ranking
公开(公告)号：US11851392B2
公开(公告)日：2023-12-26
申请号：US17290901
申请日：2019-10-31
Applicant: EASTMAN CHEMICAL COMPANY
Inventor： Robert Jacks Sharpe , Scott Donald Barnicki , Manik Lal Saha , Kenneth Wayne Hampton, Jr. , Damon Ray Billodeaux , Robert Thomas Hembre
Abstract: An efficient process useful for the self-condensation of aliphatic aldehydes is provided, catalyzed by dialkylammonium carboxylate salts. In particular, the invention provides a facile method for the preparation of 2-ethyl hexenal via the self-condensation of butyraldehyde using various dialkylammonium carboxylates, e.g., diisopropylammonium acetate or dimethylammonium acetate, as catalyst. Additionally, residual nitrogen arising from the catalyst can be reduced to −100 ppm levels in the product via a simple washing procedure. The invention provides a process for preparing alkenals under conditions which limit the formation of undesired impurities and high-boiling oligomeric substances.
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公开(公告)号：US09428435B2
公开(公告)日：2016-08-30
申请号：US14568667
申请日：2014-12-12
Applicant: Eastman Chemical Company
Inventor： Damon Ray Billodeaux , Kenneth Wayne Hampton, Jr. , Chad A. Johnson
IPC: C07C51/235 , C07C51/16
CPC classification number: C07C51/235 , C07C51/16 , C07C67/44 , C07C53/124
Abstract: The oxidation of isobutyraldehyde produces isobutyric acid and byproducts, such as isopropyl formate. A process of reducing the isopropyl formate byproduct and other byproducts in the oxidation of isobutyraldehyde is described. The process uses a carbonyl compound, such as acetone, to reduce byproduct levels in the resulting product. Process for use of static mixers in oxidation reactions of aldehydes are also provided.
Abstract translation: 异丁醛的氧化产生异丁酸和副产物，如甲酸异丙酯。 描述了在异丁醛氧化中还原甲酸异丙酯副产物和其它副产物的方法。 该方法使用羰基化合物，例如丙酮，以减少所得产物中的副产物水平。 还提供了在醛的氧化反应中使用静态混合器的方法。
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公开(公告)号：US09975840B2
公开(公告)日：2018-05-22
申请号：US15215206
申请日：2016-07-20
Applicant: Eastman Chemical Company
Inventor： Damon Ray Billodeaux , Kenneth Wayne Hampton, Jr. , Chad A. Johnson
IPC: C07C51/235 , C07C51/16 , C07C67/44
CPC classification number: C07C51/235 , C07C51/16 , C07C67/44 , C07C53/124
Abstract: The oxidation of isobutyraldehyde produces isobutyric acid and byproducts, such as isopropyl formate. A process of reducing the isopropyl formate byproduct and other byproducts in the oxidation of isobutyraldehyde is described. The process uses a carbonyl compound, such as acetone, to reduce byproduct levels in the resulting product. Process for use of static mixers in oxidation reactions of aldehydes are also provided.
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公开(公告)号：US09822053B2
公开(公告)日：2017-11-21
申请号：US15009098
申请日：2016-01-28
Applicant: EASTMAN CHEMICAL COMPANY
Inventor： Venkata Bharat Boppana , Kenneth Wayne Hampton, Jr. , Zhufang Liu , Charles Edwan Sumner, Jr. , Gerald C. Tustin , Guy Ralph Steinmetz , Melissa Page Steffey
IPC: B01J23/42 , B01J23/44 , C07C45/00 , C07C45/72 , B01J21/06 , B01J37/02 , B01J37/16 , B01J37/18 , B01J35/00
CPC classification number: C07C45/72 , B01J21/063 , B01J23/44 , B01J23/96 , B01J35/0013 , B01J35/006 , B01J35/008 , B01J37/0221 , B01J37/0236 , B01J37/16 , B01J37/18 , B01J38/02 , B01J38/12 , C07C45/73 , Y02P20/584 , C07C47/02
Abstract: Disclosed is a method of making and using a titania supported palladium catalyst for the single step synthesis of 2-ethylhexanal from a feed of n-butyraldehyde. This titania supported palladium catalyst demonstrates high n-butyraldehyde conversion but also produces 2-ethylhexanal in an appreciable yield with maintained activity between runs. This method provides a single step synthesis of 2-ethylhexanal from n-butyraldehyde with a catalyst that can be regenerated that provides cleaner downstream separations relative to the traditional caustic route.
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公开(公告)号：US09227903B2
公开(公告)日：2016-01-05
申请号：US14105945
申请日：2013-12-13
Applicant: Eastman Chemical Company
Inventor： Damon Ray Billodeaux , Kenneth Wayne Hampton, Jr.
IPC: C07C51/34 , C07C51/347 , C07C51/235
CPC classification number: C07C51/235 , C07C53/124
Abstract: The oxidation of isobutyraldehyde produces isobutyric acid and byproducts, such as isopropyl formate. A method of reducing the isopropyl formate byproduct in the oxidation of isobutyraldehyde is described. The method uses a co-solvent, such as acetone, to the isobutyraldehyde feed to increase both the selectivity of the reaction to isobutyric acid and the production rate of isobutyric acid so that the isopropyl formate byproduct is significantly reduced.
Abstract translation: 异丁醛的氧化产生异丁酸和副产物，如甲酸异丙酯。 描述了在异丁醛氧化中还原甲酸异丙酯副产物的方法。 该方法使用诸如丙酮的共溶剂到异丁醛进料中以增加反应对异丁酸的选择性和异丁酸的生产速率，使得甲酸异丙酯副产物显着降低。
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