| abstract |
There are described novel dye compounds which are represented by the formula ##STR1## wherein A is ##STR2## X is H, alkyl, aryl such as phenyl or naphthyl, or substituted aryl; W is H or alkyl; R is H or alkyl; Z and Y are each H or monovalent radicals; l and p are each 1 or 2 and m and n are each integers of from 2-6. |