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公开(公告)号:US3694433A
公开(公告)日:1972-09-26
申请号:US3694433D
申请日:1971-08-27
申请人: ALLIED CHEM
发明人: BECKHAM LELAND J
IPC分类号: C07D201/16 , C07D41/06
CPC分类号: C07D201/16
摘要: A process comprising the steps of: A. CONTACTING AT A TEMPERATURE RANGING FROM ABOUT 40* C. to about 90* C. a rearrangement mass comprising Epsilon caprolactam and sulfuric acid with the following reactants: (I) SUBSTANTIALLY WATER-FREE AMMONIUM SULFATE IN AN AMOUNT RANGING FROM ABOUT 0.9 TO ABOUT 1.1 MOLES PER MOLE OF SULFURIC ACID PRESENT IN SAID REARRANGEMENT MASS, AND (II) AN AQUEOUS AMMONIUM BISULFATE SOLUTION SATURATED AT A TEMPERATURE WITHIN THE RANGE OF 20* TO 55* C., the amount of said aqueous solution being such as to dissolve at the contacting temperature the ammonium bisulfate formed by the reaction of the sulfuric acid component of the rearrangement mass with said ammonium sulfate, to thereby afford an Epsilon -caprolactam phase and an aqueous ammonium bisulfate phase; B. SEPARATING SAID Epsilon -CAPROLACTAM PHASE; C. COOLING SAID AQUEOUS AMMONIUM BISULFATE PHASE TO A TEMPERATURE WITHIN THE RANGE OF 20* TO 55* C. to thereby afford crystalline ammonium bisulfate and a saturated aqueous ammonium bisulfate solution; D. RECOVERING AND RECYCLING SAID SATURATED AQUEOUS SOLUTION TO STEP A).
摘要翻译: 一种方法,包括以下步骤:
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公开(公告)号:US2687433A
公开(公告)日:1954-08-24
申请号:US26412951
申请日:1951-12-29
发明人: BECKHAM LELAND J
IPC分类号: C07C51/02
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3.
公开(公告)号:US3595609A
公开(公告)日:1971-07-27
申请号:US3595609D
申请日:1969-10-13
申请人: ALLIED CHEM
发明人: BECKHAM LELAND J
摘要: POTASSIUM CHLORIDE AND WATER AND ADDED TO A FIRST AQUEOUS NITRATE-CHLORIDE MOTHER LIQUOR HAVING A
K+/(K++NH4+)
MOL RATIO OF NOT MORE THAN ABOUT 0.37 TO FORM A POTASSIUM NITRATE CRYSTALLIZATION MEDIUM. THE MEDIUM IS COOLED TO PRECIPITATE CRYSTALLINE POTASSIUM NITRATE AND FORM A SECOND NITRATE-CHLORIDE MOTHER LIQUOR. AFTER SEPARATION OF THE POTASSIUM NITRATE, AMMONIUM NITRATE IS ADDED TO THE SECOND MOTHER LIQUOR, ALL ADDED WATER IS EVAPORATED TO FORM AN AMMONIUM CHLORIDE CRYSTALLIZATION MEDIUM, AND AMMONIUM CHLORIDE IS CRYSTALLIZED AT A TEMPERATURE HIGHER THAN THE POTASSIUM NITRITE CRYSTALLIZATION. THE AMMONIUM CHLORIDE IS SEPARATED, AND THE RESIDUAL MOTHER LIQUOR IS RECYCLED TO RECEIVE ADDITIONAL POTASSIUM CHLORIDE AND WATER. THE MAINTENANCE OF A NET BALANCE OF COM-
PONENTS PERMITS CONTINUOUS OPERATION OF A CYCLIC METATHESIS OPERATION.-
公开(公告)号:US3635661A
公开(公告)日:1972-01-18
申请号:US3635661D
申请日:1967-11-17
申请人: ALLIED CHEM
发明人: BECKHAM LELAND J
CPC分类号: C07C51/412 , C01B17/64 , C01B25/46 , C01C1/24 , C01D17/003 , C05B7/00 , C07C53/06 , C07C59/265 , C07C53/10
摘要: Metathesis reactions between water-soluble ionic compounds are carried out by means of a liquid extraction process using water and a water-miscible organic solvent. The separation of mixtures of water-soluble salts are also carried out using water and a water miscible organic solvent.
摘要翻译: 水溶性离子化合物之间的复分解反应通过使用水和水混溶性有机溶剂的液体萃取方法进行。 水溶性盐的混合物的分离也使用水和水混溶性有机溶剂进行。
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公开(公告)号:US3547615A
公开(公告)日:1970-12-15
申请号:US3547615D
申请日:1967-11-01
申请人: ALLIED CHEM
发明人: BECKHAM LELAND J
IPC分类号: C05B7/00
CPC分类号: C05B7/00
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公开(公告)号:US3422109A
公开(公告)日:1969-01-14
申请号:US3422109D
申请日:1966-03-30
申请人: ALLIED CHEM
发明人: BECKHAM LELAND J
IPC分类号: B27L5/08 , C07D241/02 , C07D51/66
CPC分类号: C07D241/02 , B27L5/08
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公开(公告)号:US3142558A
公开(公告)日:1964-07-28
申请号:US17428362
申请日:1962-02-19
申请人: ALLIED CHEM
发明人: BECKHAM LELAND J , KELLY FRED L
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