JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE) ›› 2010, Vol. 40 ›› Issue (4): 108-112.
• Articles •
YANG Xiao-yu, CAO Cheng-bo*, ZHOU Chen, HU Shun-peng
Considering the weak acid resistivity and solubility of the anionic FWA in acidic conditions, the triazinyl aminostilbene fluorescent whitening agents were synthesized through three-step condensation reactions using 4-aminobenzoic acid with cyanuric chloride (CC), 4,4′-diamino stilbene2,2′-disulfonic acid (DSD acid) and aliphatic amines as the basic materials. Triethanolamine, triethylamine, N, N-dimethyl ethanolamine and Nmethyldiethanolamine were used to synthesize four new types of amphoteric fluorescent by the third step condensation reaction. The structural characterization of the synthesized amphoteric fluorescent whitening agents (FWA) was given. The fluorescence emission properties and the dyeing properties of the amphoteric FWA were studied by comparing with those of anionic FWA. The results showed that the fluorescence emission efficiency was lower than that of anionic FWA, and the amphoteric FWA was more suitable for dyeing in acidic conditions.
fluorescent whitening agent; ,
fluorescence emission property,
YANG Xiao-yu, CAO Cheng-bo*, ZHOU Chen, HU Shun-peng. Synthesis and properties of amphoteric fluorescent whitening agents[J].JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2010, 40(4): 108-112.
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