Pigmented 1-naphtholsulphonic acid-based monoazo pigments
作者： Hans Joachim Metz , Frank Morgenroth , Uday T. Nabar , Sunil D. Deval , Chandrashekhar D. Patil
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摘要: The invention relates to novel monoazo compounds of formula (1), wherein R1 represents H, Cl or CH3; R2 H Cl; M2+ Mg?2+, Mn2+ Sr2+?; Y1 = COO- SO?3?-; Y2 SO3-; Y3 Y4 Y5 H; SO3-, Y3= H. (1) are characterized by high intensity and light-fastness.
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