Inventors:
Timothy B. Gunnell - Moore SC
John B. Hines - Spartanburg SC
Carey N. Barry - Spartanburg SC
Assignee:
Milliken Research Corporation - Spartanburg SC
International Classification:
C07D31188
Abstract:
A diamino-xanthene colorant is provided having the following structure: ##STR1## where Y is a poly(oxyalkylene) substituent having a straight or branched polymer chain of at least 3 monomer units selected from ethylene oxide, propylene oxide, butylene oxide and glycidol;
R. sub. 1 and R. sub. 2 are independently selected from H, C1-C4 alkyl, C1-C4 alkoxy, Cl, Br and I;
X is selected from H, SO. sub. 3 --, CO. sub. 2 -- and COOR. sub. 3, where R. sub. 3 is C1-C4 alkyl or aryl; and
each Z is independently selected from SO. sub. 3 --, CO. sub. 2 --, COOR. sub. 4, Cl and OH, where R. sub. 4 is C1-C4 alkyl or aryl, and n is 0, 1, or 2; the colorant is synthesized by condensing two moles of an N,N-bis(poly(oxyalkylene))-p-methoxyaniline and o-formylbenzene sulfonic acid.