子分类：
| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | Simultaneous preparation of acetic acid, methyl acetate and acetic anhydride | JP16092793 | 1993-06-30 | JPH06100479A | 1994-04-12 | GEN SEICHIN; KAN SEIKAN; GO SHIYUNU; SHIYU GOSHIN |
| PURPOSE: To symultaneously or selectively obtain acetic acid, methyl acetate and acetic anhydryde, by carbonylating methanol in a gas phase under the specified condition to prepare acetic acid and methyl acetate and afterthat preparing acetic anhydride from the residue of methyl acetate. CONSTITUTION: First, methanol is carbonylated in the gas phase in a carbonylation reactor, in the presence of a co-catalyst comprising a rhodium catalyst and a halide, using carbon monoxide or/and the gaseous mixture composed of carbon monoxide and hydrogen (wherein 1-50% hydrogen is mixed), in a molar ratio of the gas : methanol of (1:0.1) to (1:100), at 100-400°C under a partial pressure of carbon monoxide of from atm. pressure to 1,000 psig to obtain the objective acetic acid and methyl acetate, and after a specified amount of acetic acid and methyl acetate is recovered, the residue of methyl acetate is carbonylated with carbon monoxide or the gaseous mixture composed of carbon monoxide and hydrogen, in a GHSV(Gas Hourly Space Velocity) of 50-10,000 Hr -1 at 100-400°C to prepare and recover the objective acetic anhydride. Further the co-catalyst is recycled to use. COPYRIGHT: (C)1994,JPO | ||||||
| 42 | JPS6310936B2 - | JP13823380 | 1980-10-02 | JPS6310936B2 | 1988-03-10 | JOSEFU PUGAHA |
| 43 | JPS5837020B2 - | JP4046775 | 1975-04-04 | JPS5837020B2 | 1983-08-13 | ANSONII SEODOORU JUREUITSUKU; RUISU BUROSUTAA YANGU |
| 44 | Novel asymmetrically substituted maleic anhydride and manufacture thereof | JP18765582 | 1982-10-27 | JPS5883687A | 1983-05-19 | BUERUNAA BURAITENSHIYUTAIN; MARUKUSU BAUMAN; HANSU BOSUHARUTO |
| 45 | JPS5724772B2 - | JP14368173 | 1973-12-24 | JPS5724772B2 | 1982-05-26 | |
| 46 | JPS5721255B2 - | JP13680980 | 1980-10-02 | JPS5721255B2 | 1982-05-06 | |
| 47 | Catalyst for manufacturing maleic acid anhydride | JP13558077 | 1977-11-11 | JPS5361588A | 1978-06-02 | REIMONDO HIGINSU; GURAHAMU JIYON HATSUCHINGUSU |
| 48 | JPS5019710A - | JP7123774 | 1974-06-20 | JPS5019710A | 1975-03-01 | |
| 49 | JPS4988817A - | JP14368173 | 1973-12-24 | JPS4988817A | 1974-08-24 | |
| 50 | JPS4875501A - | JP12965972 | 1972-12-26 | JPS4875501A | 1973-10-11 | |
| 51 | Processes for producing tetrafluorophthalic anhydride and fluorobenzoic acids | US391060 | 1995-02-21 | US5523476A | 1996-06-04 | Ryuji Seki; Koji Sugimoto; Seisaku Kumai |
| A process for producing tetrafluorophthalic anhydride, which comprises chlorinating tetrachlorophthalic anhydride to obtain 3,3,4,5,6,7-hexachloro-1-[3H]-isobenzofuranone, then fluorinating it to obtain 3,4,5,6-tetrafluorophthaloyldifluoride and/or 3,3,4,5,6,7-hexafluoro-1-[3H]-isobenzofuranone, and further reacting the tetrafluorophthalolyldifluoride and/or the hexafluoro-1-[3H]-isobenzofuranone with an inorganic base or an organic acid to obtain tetrafluorophthalic anhydride. | ||||||
| 52 | Processes for the carbonylation of methanol to form acetic acid, methyl acetate and acetic anhydride | US183344 | 1994-01-19 | US5488143A | 1996-01-30 | Sung J. Uhm; Sung H. Han; Jun W. Oh; Oh S. Joo |
| The present invention provides an improved process for selectively producing acetic acid and/or methyl acetate by the gas phase carbonylation of methanol with carbon monoxide; an improved process for producing acetic anhydride directly from the methyl acetate; and a novel method for sustaining the life time of a carbonylation or a hydroformylation catalyst by pretreating the carbon monoxide or the synthesis gas to be used in carrying out the gas phase carbonylation or the hydroformylation. | ||||||
| 53 | Polymeric carbonylation catalyst system | US110999 | 1993-08-24 | US5466874A | 1995-11-14 | Mark O. Scates; R. Jay Warner; G. Paull Torrence |
| A carbonylation catalyst useful for the carbonylation of methanol to acetic acid, acetic anhydride or both comprises a polymer support containing pendant pyrrolidone groups which support a rhodium species. Other polymeric supports capable of withstanding carbonylation temperatures of at least 150.degree. C. are disclosed for the carbonylation reaction in which rhodium levels in the reaction medium of greater than 500 ppm are contemplated. | ||||||
| 54 | Process for the preparation of asymmetrically substituted maleic anhydrides, and asymmetrically substituted maleic anhydrides | US435593 | 1982-10-21 | US4480106A | 1984-10-30 | Werner Breitenstein; Marcus Baumann; Hans Bosshard |
| Compounds of the formula I ##STR1## in which R, R.sub.1 and R.sub.2 are as defined in patent claim 1, can be prepared by a novel process, for example by treating a salt of imidazo[1,2-a]pyridin-2(3H)-one with fumaric acid, maleic acid or maleic anhydride, in the presence of a base, and converting the product to a salt of 3-(1,2-dicarboxyethyl)-imidazo[1,2-a]pyridin-2(3H)-one, in the presence of a strong acid, reacting the latter salt with a compound CH.sub.2 =C(R.sub.1)(R.sub.2) and treating the intermediate obtained with glacial acetic acid and sodium acetate. The compounds (I) can be converted, in a manner known per se, to corresponding imides having functional groups suitable for polymerization reactions of polycondensation reactions. These imides can be used to prepare photocrosslinkable polymers. The anhydrides (I) can also be used, in some cases, to prepare pharmaceutically active benzofuranones and homosalicylic acids by reaction with salts of suitable amines. | ||||||
| 55 | Production of acetic anhydride | US191702 | 1980-09-29 | US4333884A | 1982-06-08 | Hans-Klaus Kubbeler; Heinz Erpenbach; Klaus Gehrmann; Klaus Schmitz |
| The invention relates to an improved process for making acetic anhydride by reacting methyl acetate and/or dimethylether with carbon monoxide under practically anhydrous conditions, at temperatures of 350 to 575 K., under pressures of 1 to 300 bars, and in the presence of a catalyst system containing noble metals belonging to group VIII of the periodic system of the elements, or compounds thereof, iodine and/or its compounds, and an aliphatic carboxylic acid having 1 to 8 carbon atoms. The improved process is effected in the presence of a catalyst system containing, as additional ingredients, a heterocyclic aromatic compound, in which at least one hetero atom is a quaternary nitrogen atom, or a quaternary organophosphorus compound, and a zirconium compound being soluble in the reaction mixture. | ||||||
| 56 | Process for preparing carboxylic acid anhydrides | US81304 | 1979-10-02 | US4251458A | 1981-02-17 | Joseph Pugach |
| A carboxylic acid anhydride, such as acetic anhydride, is prepared from a carboxylate ester or a hydrocarbyl ether in carbonylation processes comprising the use of a halide, carbon monoxide and a Group VIII noble metal in the presence of promoters comprising at least one metal of Group VIB of the Periodic Table, or their compounds, and an arsine of the formula ##STR1## wherein R and R.sup.1 are monocyclic aryl groups or alkyl groups and R.sup.2 is the radical ##STR2## a monocyclic aryl group or an alkyl group, and wherein R.sup.3 and R.sup.4 are each a monocyclic aryl group or an alkyl group, with the proviso that at least one of R, R.sup.1 and R.sup.2 is a monocyclic aryl group, n being zero or a digit from 1-20. | ||||||
| 57 | Production of maleic anhydride and catalysts therefor | US848719 | 1977-11-04 | US4147661A | 1979-04-03 | Raymond Higgins; Graham J. Hutchings |
| Catalysts for the oxidation of hydrocarbons to maleic anhydride comprise a phosphorus/vanadium mixed oxide promoted by tungsten antimony, niobium, and/or molybdenum, having a surface area of at least 10m.sup.2 /g. | ||||||
| 58 | V-P-Zr Catalysts and method of preparation thereof in the absence of hydrogen halide | US461668 | 1974-04-17 | US3932305A | 1976-01-13 | Anthony T. Jurewicz; Lewis Brewster Young |
| V-P-Zr catalysts having high activity and selectivity and good physical strength for the oxidation of alkanes, cycloalkanes and mixtures rich in them to dicarboxylic acid anhydrides (e.g. maleic anhydride) are prepared by reacting an aqueous mixture of vanadium pentoxide and a hydroxy-or oxo- alkanoic acid or formaldehyde, a zirconium salt, and phosphoric acid. | ||||||
| 59 | Production of chloroanthraquinone-2,3-dicarboxylic acid anhydrides | US41712273 | 1973-11-19 | US3923838A | 1975-12-02 | EILINGSFELD HEINZ; EISFELD WOLFGANG; PATSCH MANFRED; SCHAFFNER ERNST |
| IN WHICH ONE X is chloro and the other X is hydrogen or each X is chloro; and WITH AIR OR OXYGEN OR WITH 10 TO 30% BY WEIGHT NITRIC ACID TO FORM THE CORRESPONDING CARBOXYLIC ACID FOLLOWED BY CYCLIZATION OF THE LATTER. 1-CHLOROANTHRAQUINONE-2,3-DICARBOXYLIC ANHYDRIDE OR 1,4-DICHLOROANTHRAQUINONE-2,3-DICARBOXYLIC ANHYDRIDE IS OBTAINED IN A GOOD YIELD. Each is a valuable dye intermediate.
A process for the production of an anthraquinone-2,3dicarboxylic anhydride bearing chlorine as a substituent in the 1-position or in the 1- and 4-positions by oxidation of a trimethyl compound of the formula: |
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| 60 | Production of carboxylic acids | US21268071 | 1971-12-27 | US3816490A | 1974-06-11 | FORSTER D; MORRIS D |
| PRODUCTION OF CARBOXYLIC ACIDS AND CARBOXYLIC ACID ANHYDRIDES BY CARBOXYLATION OF ETHYLENICALLY-UNSATURATED COMPOUNDS UTILIZING A CATALYST SYSTEM COMPRISING A GROUP VIII METAL COMPOUND AND A PROMOTER SELECTED FROM THE GROUP CONSISTING OF PHENOL, SUBSTITUTED PHENOLS, THIOPHENOL, SUBSTITUTED THIOPHENOLS, FLUORINE-SUBSTITUTED CARBOXYLIC ACIDS, THIOCARBOXYLIC ACIDS AND SULPHONIC ACIDS.
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