Diaminoalkane and oxidation colorants
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Feb 15, 2000
Grant Date -
N/A
app pub date -
Dec 30, 1998
filing date -
Jul 3, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A diaminoalkane of general formula (I) in which R.sub.1 to R.sub.10 stand independently of each other for hydrogen, a (C.sub.1 -C.sub.4)-alkyl group, a hydroxy-(C.sub.2 -C.sub.3)-alkyl group, a (C.sub.1 -C.sub.4)-alkoxy-(C.sub.2 -C.sub.3) alkyl group, an amino- (C.sub.2 -C.sub.3) alkyl group or a 2,3-dihydroxypropyl group and n is a number from 1 to 6 with the proviso that the --NR.sub.1 R.sub.2 and --NR.sub.7 R.sub.8 groups are either in positions 4 and 4' or in positions 5 and 5'. Salts of the diaminoalkane which are physiologically compatible with inorganic and organic acids. Method of coloring keratin fiber.
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