发明公开

BISAZOFARBSTOFFE AUF DER BASIS VON HYDROXYNAPHTHALINCARBONSÄURE
摘要:
The invention relates to bisazo compounds of formula (Ia) or (Ib) wherein R1 represents hydrogen or methyl; the groups X independently represent -CH¿2?CH2- or -CH2CH2CH2-; R?2, R3, R4¿ independently represent hydrogen or methyl; A represents an anion; and n represents the valency of A. The invention also relates to the use of said bisazo compounds for dyeing, especially paper, and to dyes containing bisazo compounds.
信息查询
0/0