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Synthesis and characterization of a bisbenzotriazole derivative and its application in PVC as an ultraviolet absorber
Author(s) -
Xu Sheyang,
Cao Derong,
Chen Mingcai
Publication year - 2007
Publication title -
journal of vinyl and additive technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 1083-5601
DOI - 10.1002/vnl.20134
Subject(s) - molar absorptivity , benzotriazole , ultraviolet , materials science , vinyl chloride , absorption (acoustics) , derivative (finance) , ultraviolet visible spectroscopy , molar ratio , polymer chemistry , nuclear chemistry , photochemistry , chemistry , organic chemistry , optoelectronics , composite material , optics , polymer , physics , copolymer , economics , financial economics , metallurgy , catalysis
Abstract A novel ultraviolet (UV) absorber, 5,5′‐disulfide‐bis[2‐(2‐hydroxy‐3,5‐di‐ tert ‐butylphenyl)‐2Hbenzotriazole] (DSBHTBB) was synthesized. Its structure was characterized by FTIR, NMR, UV, FABMS, and elemental analysis. In comparison with the common commercial benzotriazole UV absorbers, the absorption maximum of DSBHTBB (364 nm) is red shifted by about 20 nm, and the molar extinction coefficient (56,800, in CHCl 3 ) is much greater. With those properties the bisbenzotriazole could be applied as an efficient UV absorber for the protection of polymeric materials and sensitive skin from longer‐wavelength (near‐visible) ultraviolet light. The experimental results showed that DSBHTBB can greatly inhibit the discoloration under irradiation of poly (vinyl chloride) (PVC) containing an organic antimony stabilizer. J. VINYL ADDIT. TECHNOL., 13:195–200, 2007. © 2007 Society of Plastics Engineers