| 摘要 |
The invention relates to novel monoazo compounds of formula (1), wherein R<SUB>1 </SUB>re resents H, Cl or CH<SUB>3</SUB>; R<SUB>2 </SUB>represents H or Cl; M<SUP>2+ </SUP>represents Mg<SUP>2+</SUP>, Mn<SUP>2+ </SUP>or Sr<SUP>2+</SUP>; Y<SUB>1</SUB>=represents COO<SUP>- </SUP>or SO<SUB>3</SUB><SUP>-</SUP>; Y<SUB>2</SUB>=SO<SUB>3</SUB><SUP>-</SUP>; Y<SUB>3</SUB>=Y<SUB>4</SUB>=Y<SUB>5</SUB>=H; or Y<SUB>3</SUB>=SO<SUB>3</SUB><SUP>31 </SUP>, Y<SUB>2</SUB>=Y<SUB>4</SUB>=Y<SUB>5</SUB>=H; or Y<SUB>4</SUB>=SO<SUB>3</SUB><SUP>-</SUP>, Y<SUB>2</SUB>=Y<SUB>3</SUB>=Y<SUB>5</SUB>=H; or Y<SUB>5</SUB>=SO<SUB>3</SUB><SUP>-</SUP>, Y<SUB>2</SUB>=Y<SUB>3</SUB>=Y<SUB>4</SUB>=H. The compounds of formula (1) are characterized by high intensity and light-fastness. |
