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Interaction of Benzoate-type Ultraviolet Absorbers with Hindered Amine Light Stabilizers
HALS HALS nitrosonium Photo-antioxidant activity Benzoate-type UVA
2009/8/4
The interaction of benzoate-type ultraviolet absorbers (UVA) with hindered amine light stabilizers (HALS) was investigated. Benzoate-type UVA showed antagonism or synergism with HALS, depending on th...
Synergism between Hydrogen Bond-type Ultraviolet Absorbers and Hindered Amine Light Stabilizers
HALS UVA Photo-antioxidant activity Antagonism Synergism
2009/8/4
The synergism of hydrogen bond-type ultraviolet absorbers (UVA), such as phenyl salicylate and benzotriazole type UVA, and hindered amine light stabilizers (HALS) was investigated and compared with t...
Interaction of Hindered Amine Light Stabilizers and Ultraviolet Absorbers
HALS UVA Antagonism Synergism Photo-oxidation Quinone
2009/8/4
The reason is discussed, why ultraviolet absorbers (UVA) having phenolic moiety show the synergism with HALS apparently, on the contrarily to phenolic antioxidants. A HALS nitrosonium is a substrate ...
Influence of Ultraviolet Absorbers on Decomposition of Hydroperoxide by Hindered Amine Light Stabilizers
Hydroperoxide Decomposition HALS UVA Synergism
2009/8/4
The interaction between hindered amine light stabilizers (HALS), and ultraviolet absorbers (UVA) was investigated, in order to clarify the reason why they generally show synergism, although UVA belong...
Mechanism of Asphalt Binder Aging by Ultraviolet Irradiation and Aging Resistance by Adding Carbon Black
Asphalt binder Ultraviolet irradiation Aging Carbon black Carbonyl group
2009/7/24
The components of asphalt binders were separately irradiated with ultraviolet (UV) rays to examine the aging mechanism. The results confirmed that saturates are converted to resins and asphaltenes, r...