| 摘要 |
PURPOSE: A technical field of optical brighteners of the bis-s-triazinlyaminostilbene series is provided which are substituted on the triazinyl rings by vinyl sulfone containing fiber-reactive substituents. CONSTITUTION: An optical brightener of the bis-striazinylaminostilbene series has at least one fiber reactive vinyl sulfone substituent selected from formula, wherein: R3 is selected from hydrogen, a substituted or unsubstituted phenyl, a substituted or unsubstituted alkyl of one to four carbons, a substituted or unsubstituted alkoxy of one to four carbons and a substituted or unsubstituted cyclohexyl substituent; W is selected from a substituted or unsubstituted arylene, e.g. phenylene and naphthylene; a substituted or unsubstituted alkylene of 1 to about 8 carbons, e.g. methylene, ethylene and propylene, or two or three of the arylene and alkylene groups in combination, e.g. arylene - alkylene or arylene -alkylene - arylene or alkylene - arylene - alkylene; etc. Y is selected from vinyl, 2-sulfatoethyl, 2-thiosulfatoethyl, 2phosphatoethyl, and 2-alkanoyloxyethyl wherein said alkanoyl has 2 to 5 carbon atoms. A a is a number selected from 0 and 1; b is a number selected from 1 and 2; with the proviso that the sum of a + b is 2. The moiety X together with the N atom is a bivalent heterocyclic ring formed from 1 to 2 alkylene groups of 1 to 5 carbons which contain a hetero atom (N, 0, S); and x is a number selected from 1 to 8. |
