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| A New Type of Light-induced Yellowing Prohibitor—Synthesis and Application |
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| DOI：10.11980/j.issn.0254-508X.2014.07.004 |
| Key Words:coumarin ultraviolet absorber light stabilizer brightness-stability |
| Fund Project:陕西省自然科学基金（2009JM2010）；传化集团绿色轻化工助剂研发中心基金（20124932）。 |
| Author Name | Affiliation | | 张光华 | 陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安,710021 | | 相 瑞* | 陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安,710021 | | 王 鹏 | 陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安,710021 | | 陈 淼 | 陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安,710021 | | 秦 松 | 陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安,710021 |
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| Abstract:The 7-hydroxy-4-methyl coumarin fluorescent brightener was prepared based on the Pechmann method, a new 7-hydroxy-4-methyl coumarin light-induced yellowing prohibitor was synthesized by introducing 2,4-dihydroxy-benzophenone (an ultraviolet absorber) and 4-amion-2,2′,6,6′-tetramentylniperidine (a free radicals capturer) into the molecule of 7-hydroxy-4-methyl coumarin fluorescent brightener, using cyanuric chloride as the cross-linking monomer. The structure of the new compound was characterized by FT-IR, UV-vis and photoluminescence(PL) spectrum-meters, its brightness-stabilizing effect on paper was evaluated by means of the ultraviolet aging apparatus. Results showed that, the new synthesized Light-induced Yellowing Prohibitor was more effective on yellowing-inhibition comparing with 7-hydroxy-4-methyl coumarin fluorescent brightener. |
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