Benzotriazole Photostabilizers: Nitration of Tinuvin P

descriptionPublicationkeyboard_double_arrow_right Article 01 Mar 1989 English Publisher:CSIRO PublishingJournal:Australian Journal of Chemistry, volume 42, pages 447-450 (issn: 0004-9425, eissn: 1445-0038,

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Authors: RG Amiet;

doi: 10.1071/ch9890447

Benzotriazole Photostabilizers: Nitration of Tinuvin P

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Abstract

Nitration of the commercial photostabilizer Tinuvin P, 2-(21-hydroxy-5'-methylphenyl)- 2H-benzotriazole,* has been shown to yield 2-(2'-hydroxy-5'-methyl-3'-nitrophenol)-2 H -benzotriazole. The anion of this nitro compound is intensely coloured and may be the cause of yellowing of polymers in which Tinuvin P has been incorporated.

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