Meta-phenylenediamines, dyeing compositions in which they are present
申请人:Societe Anonyme dite: L'Oreal
公开号:US04333730A1
公开(公告)日:1982-06-08
Novel meta-phenylenediamines are provided for use as couplers with dye bases in hair dye compositions. These meta-phenylenediamines have the formula: ##STR1## in which n is 2, 3 or 4. Their acid addition salts may also be used.