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公开(公告)号：US3790607A
公开(公告)日：1974-02-05
申请号：US3790607D
申请日：1971-05-20
Applicant: ALLIED CHEM
Inventor： LICHSTEIN B
CPC classification number: C07C51/10 , C07C327/00
Abstract: THIS INVENTION PROVIDES A DIRECT METHOD FOR CARBONYLATION OF FLUOROCARBON COMPOUNDS WITHOUT LOSS OF FLUORINE SUBSTITUENTS. THE METHOD COMPRISES REACTING A FLUOROCARBON IODIDE WITH CARBON MONOXIDE AND AN ACTIVE-HYDROGEN CONTAINING COMPOUND, SUCH AS METHANOL, IN THE PRESENCE OF A METAL CARBONYL CATALYST.
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公开(公告)号：US3786093A
公开(公告)日：1974-01-15
申请号：US3786093D
申请日：1969-10-17
Applicant: ALLIED CHEM
Inventor： LICHSTEIN B , DU BOIS R
IPC: C09K3/00 , C08G18/00 , C08G18/71 , C08K5/20 , C08K5/21 , C08K5/3477 , C08L77/00 , D01F6/90 , C07C103/30
CPC classification number: C08G18/00 , C08G18/712 , C08K5/20 , C08K5/21 , C08K5/3477 , C08L77/02 , C08L77/06 , C08L23/12 , C08L33/20 , C08L67/00
Abstract: NOVEL COMPOUNDS USEFUL IN IMPARTING OIL REPELLENCY TO FABRICS HAVE THE FORMULA (RFCONH)2CHR WHEREIN RF IS A RADICAL CONTAINING AT LEAST ONE FLUORINE ATOM AND FROM 1 TO 20 CARBON ATOMS, THE RADICAL BEING SELECTED FROM THE GROUP CONSISTING OF ALKYL, PHENYL, ALKYLPHENYL, PHENYLALKYL; AND ANY OF THESE RADICALS CONTAINING AN ETHER LINKAGE, AND R IS HYDROGEN, TRICHLOROMETHYL, OR PHENYL. THE COMPOUNDS ARE PREPARED BY REACTING A NITRILE OF THE FORMULA RFCN WITH FORMALDEHYDE, CHLORAL, CHLORAL HYDRATE OR BENZADEHYDE IN THE PRESENCE OF A CATATLYTIC AMOUNT OF A STRONG ACID AND PREFERABLY ALSO IN THE PRESENCE OF A SOLVENT SUCH AS CARBON TETRACHLORIDE.
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3.发明授权
公开(公告)号：US3755546A
公开(公告)日：1973-08-28
申请号：US3755546D
申请日：1971-08-31
Applicant: ALLIED CHEM
Inventor： LICHSTEIN B , WOOLF C
CPC classification number: C01B25/328
Abstract: A PROCESS FOR REMOVING PHOSPHATE ION FROM FLUORIDE IONCONTAINING AQUEOUS SOLUTION IS PROVIDED WHICH COMPRISES ADDING A WATER-SOLUBLE BARIUM SALT IN THE PRESENCE OF SUFFICIENT AMMONIA TO AFFORD A PH OF AT LEAST 8.5 AND SEPARATING THE THEREBY PRECIPITATED BARIUM PHOSPHATE FROM THE SOLUTION.
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