| Download | - View accepted manuscript: Photo-stabilizing efficiency of N-substituted hindered amines in polypropylene : Effects of processing conditions and exposure to a protonic acid (PDF, 961 KiB)
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| DOI | Resolve DOI: https://doi.org/10.1016/0141-3910(89)90008-6 |
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| Author | Search for: Chmela, S.1; Search for: Carlsson, D. J.1; Search for: Wiles, D. M.1 |
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| Affiliation | - National Research Council of Canada
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| Format | Text, Article |
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| Abstract | 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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| Publication date | 1989 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | NRCC 30094 |
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| NPARC number | 15677142 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 1afd09d3-6047-4d35-a4a1-c6a50b1d2872 |
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| Record created | 2010-06-15 |
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| Record modified | 2020-05-08 |
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