Effect of hindered piperidine compounds on the thermal reduction of p-benzoquinone in polypropylene and its effect on photo-oxidation
✍ Scribed by Norman S. Allen; Jean-Luc Gardette; Jacques Lemaire
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- English
- Weight
- 254 KB
- Volume
- 4
- Category
- Article
- ISSN
- 0141-3910
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Triphenylstibinedibromide and its derivatives with tribromo-, trichloro-, and pentachlorophenols have been used as flame-retardant additives for polypropylene. Maximum limiting oxygen index of 31.5 against 18.2 for unfilled polypropylene was obtained in a sample containing 10 phr of triphenylstibine
## Abstract A comparison of the effect of two structurally similar additives, 1‐benzoyl‐2‐naphthol and 6‐hydroxybenzanthrone, on the rate of photo‐oxidation of polypropylene under conditions of simulated daylight shows that while 6‐hydroxybenzanthrone acts as a prodegradant, 1‐benzoyl‐2‐naphthol is