| Téléchargement | - Voir le manuscrit accepté : Photo-stabilizing efficiency of N-substituted hindered amines in polypropylene : Effects of processing conditions and exposure to a protonic acid (PDF, 961 Kio)
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| DOI | Trouver le DOI : https://doi.org/10.1016/0141-3910(89)90008-6 |
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| Auteur | Rechercher : Chmela, S.1; Rechercher : Carlsson, D. J.1; Rechercher : Wiles, D. M.1 |
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| Affiliation | - Conseil national de recherches du Canada
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| Format | Texte, Article |
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| Résumé | The effects of exposure to processing conditions and strongly acidic gases on the photo-stability of polypropylene films stabilized with hindered amine light stabilizers (HALS) have been studied. A series of monofunctional hindered amines based on tetramethylpiperidine containing 〉NH〉NO〉NCOCH₃ and 〉N--OC(==O0CH₃ substituents in the piperidyl ring was compared with a bifunctional secondary amine. Exposure to heat and shear in a Brabender Plastograph caused loss by volatilization and decomposition of the 〉N O C(==O)CH₃ additive. All of the HALS derivatives formed salts upon exposure to gaseous HCl and their photo-stabilizing ability was greatly impaired although the monofunctional secondary amine was superior to the bifunctional amine under these conditions. The 〉N-COCH₃ additive was extensively decomposed by the HCl exposure. |
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| Date de publication | 1989 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro du CNRC | NRCC 30094 |
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| Numéro NPARC | 15677142 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 1afd09d3-6047-4d35-a4a1-c6a50b1d2872 |
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| Enregistrement créé | 2010-06-15 |
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| Enregistrement modifié | 2020-05-08 |
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