| 摘要 |
<p>S-Triazinylaminostilbene derivatives of formula (1) are described in which Y is halogen, alkoxy or -NR2R3 (where R?2 and R3¿ are the same or different and are H, alkyl, hydroxyalkyl or aryl or together with the nitrogen atom form a substituted or unsubstituted cyclic amino group having 5-7 ring members), R is H, aryl, which is unsubstituted or substituted (e.g. by one or more electron releasing groups such as C¿1-4?alkyl and/or C1-4alkoxy), R?1¿ is H or alkyl, Z is an electron-withdrawing group (e.g. CN, -SO¿x?M), x is 2 or 3 and M is H, a metal cation or -N?+R4R5R6R7¿ (where R4-R7 are the same or different and are H, alkyl, aralkyl or hydroxyalkyl). The compounds are useful as optical whitening agents for paper or textiles.</p> |
