C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 211/63 (2006.01) C07C 215/72 (2006.01) C07C 217/84 (2006.01) C07C 255/58 (2006.01) A61K 7/13 (1990.01)
Patent
CA 2080412
p-phenylenediamines having a quaternary ammonium group and substituted with an electron withdrawing group, derivatives thereof, compositions containing same, and their use as developers for dyeing keratinous fibers, are disclosed.
Chan Alexander Chung-Bong
Chang David Lungpao
Pan Yuh-Guo
Bristol-Myers Squibb Company
Cassan Maclean
Clairol Incorporated
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