SYNTHESIS OF 4,4'-BIS[(4-MORPHOLINO-6-ARYLUREIDO EIDO-S-TRIAZIN-2-YL)AMINO]STILBENE-2,2'-DISULFONIC ACID-DERIVATIVES AND THEIR USE AS FLUORESCENT BRIGHTENING AGENTS FOR COTTON AND NYLON FIBERS

4,4'-Diaminostilbene-2,2'-disulphonic acid was condensed with two mole s of cyanuric chloride to give 4,4'-[(4,6-dichloro-s-triazin-2-yl)amin o] stilbene-2,2'-disulphonic acid, which was then condensed with two m oles of morpholine to afford '-bis[(4-morpholino-6-chloro-s-triazin-2- yl)amino] stilbene-2,2'-disulphonic acid. This compound was then furth er condensed with two moles of an arylurea and arylthiourea to give s[ (4-morpholino-6-arylureido-s-triazin-2-yl)amino] stilbene-2,2-disulpho nic acid and -morpholino-6-asylthiouscido-s-triazin-2-yl)amino] stilbe ne-2,2'-disulphonic acids respectively. These compounds were applied a s fluorescent brightening agents on cotton and nylon fibres and gave e xcellent results.