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    • 5. 发明授权
    • Purification of acetic anhydride or acetic anhydride and acetic acid
using ozone
    • 使用臭氧纯化乙酸酐或乙酸酐和乙酸
    • US5362365A
    • 1994-11-08
    • US88035
    • 1993-07-06
    • Hiroyuki NiijimaKazuyuki Akita
    • Hiroyuki NiijimaKazuyuki Akita
    • C07C51/487C07C51/573C07C53/08C07C53/12B01D3/34C07C51/42
    • C07C51/487C07C51/573Y10S203/20
    • Acetic acid and/or acetic anhydride containing methyl crotonate, vinyl acetate, or both as impurities, is contacted with ozone in an amount of excess molar to the carbon-carbon double bond in said methyl crotonate and/or vinyl acetate and the impurities produced by ozone-treatment are removed off by distillation. A large quantity of impurities such as aldehydes are produced after treatment by treating acetic acid and/or acetic anhydride containing much amount of unsaturated compounds as impurities with ozone. Distilling the ozone-treated acetic acid and/or acetic anhydride make it possible to remove methyl crotonate and vinyl acetate, which are unsaturated compounds difficult to remove by the conventional separation methods, to give high-quality acetic acid and/or acetic anhydride excellent in the residence time in the potassium permanganate test.
    • 含有巴豆酸甲酯,乙酸乙烯酯或二者均为杂质的乙酸和/或乙酸酐与所述巴豆酸甲酯和/或乙酸乙烯酯中的碳 - 碳双键过量摩尔的量与臭氧接触,由 通过蒸馏除去臭氧处理。 通过处理含有大量不饱和化合物的乙酸和/或乙酸酐作为杂质与臭氧处理后,产生大量杂质如醛。 蒸馏臭氧处理的乙酸和/或乙酸酐可以除去作为常规分离方法难以除去的不饱和化合物的巴豆酸甲酯和乙酸乙烯酯,得到优质的乙酸和/或乙酸酐 在高锰酸钾试验中的停留时间。
    • 6. 发明授权
    • Process for purifying and recovering the contaminated catalyst solution
arising in the carbonylation of methanol and/or methyl acetate and/or
dimethyl ether
    • 用于纯化和回收在甲醇和/或乙酸甲酯和/或二甲醚的羰基化中产生的污染的催化剂溶液的方法
    • US5002914A
    • 1991-03-26
    • US491352
    • 1990-03-09
    • Heinz ErpenbachWinfried LorkNorbert WeferlingPeter Prinz
    • Heinz ErpenbachWinfried LorkNorbert WeferlingPeter Prinz
    • B01J38/00B01J31/40C07B61/00C07C27/00C07C51/12C07C51/42C07C51/48C07C51/56C07C51/573C07C53/08C07C53/12C07C67/36C07C67/37C07C67/48C07C69/16
    • C07C51/56C07C51/12C07C51/42C07C51/48C07C51/573C07C67/48Y02P20/584
    • A process for purifying and recovering the contaminated catalyst solution arising from the carbonylation of methanol, methyl acetate and/or dimethyl ether. The solution contains carbonyl complexes of rhodium, quaternary organophosphorus compounds as organic promoters, undistillable organic impurities, and acetic acid, acetic anhydride and ethylidene diacetate. The carbonyl complex of rhodium together with acetic acid, acetic anhydride and ethylidene diacetate are extracted from the contaminated catalyst solution by using a tri-C.sub.3 - to C.sub.8 -alkylphosphine. The trialkylphosphine phase is separated from the promoter phase and is separated into the volatile constituents acetic acid, acetic anhydride and ethylidene diacetate as well as trialkylphosphine. The rhodium carbonyl complex remaining as the residue and the recovered trialkylphosphine is used for further extraction. The contaminated promoter phase is freed of the organic impurities by extraction with dialkyl ethers, carboxylic acid esters or hydrocarbons and, after the extractant phase has been separated off, is recombined with the recovered acetic acid/acetic anhydride and ethylidene diacetate mixture and with the rhodium carbonyl complex and recycled to the carbonylation reactor. The impurities remaining as the residue from a distillation of the extractant phase which has been separated off are removed from the system.
    • 一种纯化和回收由甲醇,乙酸甲酯和/或二甲醚羰基化产生的污染的催化剂溶液的方法。 该溶液含有铑羰基络合物,季有机磷化合物作为有机促进剂,不可渗透的有机杂质,以及乙酸,乙酸酐和亚乙基二乙酸酯。 通过使用三-C 3 -C 8烷基膦,从污染的催化剂溶液中提取铑与乙酸,乙酸酐和亚乙基二乙酸酯的羰基络合物。 将三烷基膦相与助催化剂相分离,并分离成挥发性成分乙酸,乙酸酐和亚乙基二乙酸酯以及三烷基膦。 剩余的作为残留物的铑羰基络合物和回收的三烷基膦用于进一步萃取。 被污染的促进剂相通过用二烷基醚,羧酸酯或烃萃取除去有机杂质,并且在萃取相分离后,与回收的乙酸/乙酸酐和亚乙基二乙酸酯混合物与铑重组 羰基络合物并循环到羰基化反应器中。 从分离出的萃取相的蒸馏中残留的杂质作为残留物从体系中除去。
    • 7. 发明授权
    • Process for purifying and recovering catalyst solution contaminated
during the carbonylation of methyl acetate and/or dimethylether
    • 纯化和回收在乙酸甲酯和/或二甲醚羰基化过程中污染的催化剂溶液的方法
    • US4746640A
    • 1988-05-24
    • US25962
    • 1987-03-16
    • Heinz ErpenbachKlaus GehrmannWinfried Lork
    • Heinz ErpenbachKlaus GehrmannWinfried Lork
    • B01J38/00B01J31/40C07B61/00C07C51/00C07C51/12C07C53/12C07C67/00C07C67/37C07C69/14B01J38/68C07C51/56C07C67/36
    • B01J31/0268B01J31/0239B01J31/20B01J31/4046C07C51/42C07C51/48C07C51/573C07C67/48B01J2231/34B01J2531/822Y02P20/584
    • Catalyst solution contaminated during the carbonylation of methyl acetate and/or dimethylether. To this end, the contaminated catalyst solution is subjected in a first processing stage to extraction with a dialkylether and alkanol, each of which has from 1-4 carbon atoms per alkyl group, and thereby freed from its organic contaminants, from acetic acid, acetic anhydride and ethylidene diacetate, and the ether phase is separated from the purified promoter-containing catalyst solution; next, the ether phase is treated in a second processing stage with iodine and/or methyl iodide; the precipitated promoter containing catalyst complex is separated and dissolved in the purified catalyst solution coming from the first processing stage; the ether phase is separated into its constituents by distilling it; recovered dialkylether and alkanol are used again in the extraction stage; fresh catalyst solution is prepared from the recovered mixture of acetic acid, acetic anhydride and ethylidene diacetate and from the united purified catalyst solution while residual dialkylether and alkanol are distilled off, and the organic contaminants retained in the residue of the ether phase distillation are expelled.
    • 催化剂溶液在乙酸甲酯和/或二甲醚的羰基化过程中被污染。 为此,将污染的催化剂溶液在第一个处理阶段进行,用二烷基醚和链烷醇进行萃取,每个烷基烷基和烷醇每个烷基具有1-4个碳原子,从而从乙酸,乙酸中除去其有机污染物 酸酐和亚乙基二乙酸酯,并从纯化的含有助催化剂的催化剂溶液中分离出醚相; 接下来,乙醚相在碘和/或碘甲烷的第二个处理阶段进行处理; 将含有沉淀促进剂的催化剂配合物分离并溶解在来自第一处理阶段的纯化催化剂溶液中; 通过蒸馏将乙醚相分离成其成分; 在提取阶段再次使用回收的二烷基醚和链烷醇; 从回收的乙酸,乙酸酐和亚乙基二乙酸酯的混合物中制备新鲜的催化剂溶液,并从合并的纯化的催化剂溶液中蒸出残余的二烷基醚和链烷醇,并且保留在醚相蒸馏残余物中的有机污染物被排出。
    • 10. 发明授权
    • Carbonylation of methyl acetate
    • 乙酸甲酯的羰基化
    • US4511517A
    • 1985-04-16
    • US398802
    • 1982-07-16
    • Jean Gauthier-LafayeRobert PerronClaude Doussain
    • Jean Gauthier-LafayeRobert PerronClaude Doussain
    • C07C53/12B01J31/00C07B61/00C07C51/00C07C51/56C07C67/00
    • C07C51/56
    • Methyl acetate is carbonylated, advantageously to acetic anhydride, in a homogeneous liquid phase, advantageously in a virtually anhydrous reaction medium, in the presence of (a) a cobalt source, (b) a source of iron in the zero oxidation state, (c) an ionic iodide of the formula A.sup.+ I.sup.- in which A.sup.+ is a nitrogen group quaternary onium cation, or an alkali metal cation, and, (d) if appropriate, a carboxylate of the formula A'.sup.n+ (OCOR).sub.n.sup.-, in which n is 1 or 2 and A'.sup.n+ is defined as was A.sup.+, or is an alkaline earth metal cation, with A'.sup.n+ and A.sup.+ either being the same or different, and R is an alkyl, aralkyl or aryl radical having a maximum of 8 carbon atoms, with the total amount of halogen compounds present in the carbonylation reaction medium (expressed in gram atoms of halogen and designated by X.sub.T) being such that the atomic ratio X.sub.T /(A.sup.+ +n.A'.sup.n+) is less than or equal to 1.
    • 在(a)钴源的存在下,(b)在零氧化态的铁源(c(c)),乙酸甲酯有利地在均相液相中,有利地在几乎无水的反应介质中羰基化, )式A + I的离子碘化物,其中A +是氮基季鎓阳离子或碱金属阳离子,和(d)如果合适的话,式A'n +(OCOR)n-的羧酸酯, 其中n为1或2,A'n +定义为A +,或者是碱金属阳离子,其中A'n +和A +相同或不同,R是具有烷基,芳烷基或芳基的烷基,芳烷基或芳基, 最多8个碳原子,而羰基化反应介质中卤素化合物的总量(用卤素的克原子表示,由XT表示)使原子比XT /(A ++ n.A'n +)为 小于或等于1。