Use of transition metal complexes having oxime ligands as bleach catalysts
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United States of America Patent
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Jun 8, 2004
Grant Date -
Nov 7, 2002
app pub date -
Jan 17, 2002
filing date -
Jan 19, 2001
priority date (Note) -
Expired
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Abstract
Transition metal complexes used as bleach catalysts of the formula (1) M(L).sub.n X.sub.m (1) where M is a metal atom from the group Mn, Fe, Co, Ni, Mo, W, L is a ligand of the formula R.sub.1 R.sub.2 C.dbd.N--O(H).sub.z R.sub.1 is C.sub.1 -C.sub.22 -alkyl, C.sub.2 -C.sub.22 -alkenyl or C.sub.5 -C.sub.24 -aryl, R.sub.2 is H, C.sub.1 -C.sub.22 -alkyl, C.sub.2 -C.sub.22 -alkenyl, C.sub.5 -C.sub.24 -aryl or ##STR1## where z=0 or 1, X is a neutral or anion ligand from the group consisting of pyridines, imidazolines, methylimidazoles, picolines, lutidines, chloride, bromide, nitrate, perchlorate, citrate, hexafluorophosphate or anions of organic acids having C.sub.1 -C.sub.22 carbon atoms, n is a number from 2 to 4 and m is a number from 0 to 4.
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