Inventor
RITZ JOSEF
DE27 patents
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BASF AG
26 patentsUS5496941AMar 5, 1996
Process for continuous purification of crude caprolactam prepared from 6-aminocapronitrile
BASF AG61 citations96
US5700358ADec 23, 1997
Recovery of caprolactam from oligomers and/or polymers of caprolactam
BASF AG21 citations92
US5693793ADec 2, 1997
Preparation of caprolactam from 6-aminocapronitrile
BASF AG34 citations92
US5359062AOct 25, 1994
Recovery of caprolactam from polycaprolactam
BASF AG23 citations92
US4778669AOct 18, 1988
Preparation of aqueous solutions of free hydroxylamine
BASF AG29 citations92
US5120699AJun 9, 1992
Platinum-on-graphite catalysts and the use thereof
BASF AG43 citations91
US5032684AJul 16, 1991
Continuous purification of caprolactam
BASF AG19 citations81
US4629613ADec 16, 1986
Stabilized solutions of hydroxylamine or its salts in water or alcohols, and their preparation
BASF AG20 citations81
US5264571ANov 23, 1993
Preparation of caprolactam by Beckmann rearrangement of cyclohexanone oxime
BASF AG7 citations74
US5236685AAug 17, 1993
Preparation of hydroxylammonium salts
BASF AG9 citations74
US4889704ADec 26, 1989
Preparation of hydroxylammonium salts
BASF AG16 citations74
US4725360AFeb 16, 1988
Working up wastewaters containing hydroxylamine or its salts
BASF AG8 citations74
US5360905ANov 1, 1994
Recovery of caprolactam from oligomers and/or polymers of caprolactam
BASF AG8 citations73
US4576804AMar 18, 1986
Stabilized solutions of hydroxylamine or its salts
BASF AG16 citations73
US4551318ANov 5, 1985
Stabilized solutions of hydroxylamine or its salts in water or alcohols, and their preparation
BASF AG15 citations73
US5155081AOct 13, 1992
Platinum-on-graphite catalysts
BASF AG14 citations72
US4634584AJan 6, 1987
Stabilized solutions of hydroxylamine or its salts in water or alcohols, and their preparation
BASF AG17 citations72
US5536831AJul 16, 1996
Obtaining caprolactam by cleavage of molten polycaprolactam
BASF AG17 citations71
US5441607AAug 15, 1995
Recovery of caprolactam from distillation residues obtained in the purification of caprolactam
BASF AG7 citations71
US4882430ANov 21, 1989
Recovery of caprolactam from caprolactam distillation low boilers or high boilers or mixtures thereof
BASF AG15 citations71
US5124138AJun 23, 1992
Work-up of aqueous mother liquors containing hydrochloric acid, sulfuric acid and their hydroxyl-ammonium and ammonium salts
BASF AG5 citations63
US4737354AApr 12, 1988
Preparation of hydroxylamine-O-sulfonic acid
BASF AG4 citations63
US4814511AMar 21, 1989
Working up cyclohexyl hydroperoxide containing reaction mixtures
BASF AG6 citations62
US4601800AJul 22, 1986
Preparation of aqueous solutions of hydroxylammonium carbonate
BASF AG2 citations62
US4931592AJun 5, 1990
Storability of molten cyclohexanone oxime
BASF AG3 citations58
US4997635AMar 5, 1991
Preparation of crystalline hydroxylammonium sulfate having a low ammonium sulfate content
BASF AG1 citations52