Inventor
STEGMANN WERNER
CH13 patents
Patents
13 patentsUS5240975AAug 31, 1993
Liquid substituted 2H-benzotriazole mixtures, stabilized compositions
CIBA GEIGY CORP117 citations96
US5229521AJul 20, 1993
Process for the preparation of symmetrical 2,2-methylenebisbenzotriazolyl phenols
CIBA GEIGY CORP25 citations92
US4921966AMay 1, 1990
Process for the preparation of liquid mixtures of alkylated 2-(2-hydroxyphenyl)benzotriazoles
CIBA GEIGY CORP26 citations92
US4973701ANov 27, 1990
Liquid substituted 2H-benzotriazole mixtures, stabilized compositions and processes for preparing the liquid mixtures
CIBA GEIGY CORP25 citations91
US4874885AOct 17, 1989
Process for the preparation of mercaptomethylphenols
CIBA GEIGY CORP17 citations73
US4691058ASep 1, 1987
Process for producing 1-hydroxy ketones
CIBA GEIGY CORP7 citations73
US5095062AMar 10, 1992
Stabilized compositions containing liquid substituted 2H-benzotriazole mixtures
CIBA GEIGY CORP9 citations69
US5157141AOct 20, 1992
Process for the preparation of hydroxybenzylphosphonates
CIBA GEIGY CORP2 citations62
US4863982ASep 5, 1989
Isocyanuric acid derivatives
CIBA GEIGY CORP5 citations62
US4623745ANov 18, 1986
Process for producing phenolic thiocarboxylic esters
CIBA GEIGY CORP5 citations62
US5258540ANov 2, 1993
Cyclohexyl substituted hydroxybenyzlphosphonates
CIBA GEIGY CORP1 citations52
US5110978AMay 5, 1992
Process for the preparation of phenolic thiocarboxylic acid esters
CIBA GEIGY CORP1 citations51
US5047591ASep 10, 1991
Single-stage process for producing bis-(amino-nitrophenyl)-methane
CIBA GEIGY CORP0 citations51