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公开(公告)号:US3702871A
公开(公告)日:1972-11-14
申请号:US3702871D
申请日:1969-06-12
申请人: EDWIN B MICHAELS , JOHN W LEE
发明人: MICHAELS EDWIN B , LEE JOHN W
摘要: A PROCESS IS PROVIDED FOR THE CONTROLLED HYDROLYSIS OF POLYHALOBENZENES AND, PARTICULARLY, TETRAHALOBENZENES TO POLYHALOPHENOLS IN GOOD YIELD AND PURITY. THIS IS ATTAINED BY CAUSING ALKALINE HYDROLYSIS OF A POLYHALOBENZENE CONTAINING AT LEAST THREE HALO ATOMS TO OCCUR UNDER CONTROLLED CONDITIONS WHICH INVOLVE THE PRESENCE OF AN HYDROLYSIS CONTROLLING REAGENT, A POLYHYDRIC ALCOHOL SOLVENT, HIGH CONCENTRATIONS OF RESULTANT PHENATE AT PREDETERMINED PH RANGES AND THE DIRECT RECOVERY OF SAID SOLVENT. ADVANTAGEOUSLY, THE PROCESS IS SUBSTANTIALLY FREE FROM EXPLOSION HAZARDS AND AVOIDS THE PREPARATION OF CHLORACENE-PRODUCING SUBSTANCES.
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公开(公告)号:US3417150A
公开(公告)日:1968-12-17
申请号:US46769565
申请日:1965-06-28
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公开(公告)号:US3213146A
公开(公告)日:1965-10-19
申请号:US13380261
申请日:1961-08-25
申请人: HOOKER CHEMICAL CORP
发明人: PRAHL WALTER H , LEDERMAN SOL J
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公开(公告)号:US2803670A
公开(公告)日:1957-08-20
申请号:US60134056
申请日:1956-08-01
发明人: ALEXANDER GALAT
IPC分类号: C07C37/02 , C07C37/055 , C07C37/64 , C07C69/712
CPC分类号: C07C37/64 , C07C37/02 , C07C37/055 , C07C69/712 , C07C39/32 , C07C39/44
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5.Process for the recovery of pure 2, 4, 5-trichlorophenol from products of the alkaline hydrolysis of 1, 2, 4, 5-tetrachlorobenzene 失效
标题翻译: 从2,4,5,5-四氯苯的碱性水解产物中回收纯的2,4,5-三氯苯酚的方法公开(公告)号:US2748174A
公开(公告)日:1956-05-29
申请号:US33474653
申请日:1953-02-02
申请人: OLIN MATHIESON
IPC分类号: C07C37/02 , C07C37/055 , C07C37/64 , C07C39/32
CPC分类号: C07C37/02 , C07C37/055 , C07C37/64 , C07C39/32 , C07C39/44
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公开(公告)号:US2464176A
公开(公告)日:1949-03-08
申请号:US70479946
申请日:1946-10-21
申请人: DOW CHEMICAL CO
发明人: COLEMAN GERALD H
IPC分类号: C07C39/30 , C07C39/32 , C07C39/34 , C07C39/36 , C07C39/367
CPC分类号: C07C39/34 , C07C39/30 , C07C39/32 , C07C39/36 , C07C39/367
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公开(公告)号:US2211467A
公开(公告)日:1940-08-13
申请号:US23161338
申请日:1938-09-24
发明人: KIMBALL RICHARD H , ANTHONY LOVERDE
IPC分类号: C07C37/62
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8.2,4,5-trichlorophenol cyanine dye compound and process for the preparation thereof 失效
标题翻译: 2,4,5-三氯苯酚花青染料化合物及其制备方法公开(公告)号:US3074938A
公开(公告)日:1963-01-22
申请号:US534060
申请日:1960-01-29
申请人: PARKE DAVIS & CO
发明人: CAPPS DAVID B
IPC分类号: A61K31/425 , C07C39/32 , C07D277/64 , C09B23/06
CPC分类号: C07D277/64 , A61K31/425 , C07C39/32 , C09B23/06
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9.Method of making trichlorophenol mixtures which are rich in the 2, 4, 5-isomer 失效
标题翻译: 制备富含2,4,5-异构体的三氯苯酚混合物的方法公开(公告)号:US2756260A
公开(公告)日:1956-07-24
申请号:US30443752
申请日:1952-08-14
申请人: DOW CHEMICAL CO
IPC分类号: C07C37/62
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公开(公告)号:US2755307A
公开(公告)日:1956-07-17
申请号:US35365953
申请日:1953-05-07
申请人: OLIN MATHIESON
发明人: NICOLAISEN BERNARD H
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