Photostabilizing activity of N-acylated hindered amine

Autor:	Takashi Fujita, Toshimasa Toda, Tomoyuki Kurumada, Takao Yoshioka, Hisayu Ohsawa
Rok vydání:	1985
Předmět:	chemistry.chemical_classification chemistry.chemical_compound chemistry Polymer chemistry Organic chemistry lipids (amino acids peptides and proteins) Amine gas treating Polymer Acyl group
Zdroj:	Journal of Polymer Science: Polymer Chemistry Edition. 23:2747-2756
ISSN:	1542-9369 0360-6376
DOI:	10.1002/pol.1985.170231103
Popis:	The influence of the acyl groups of N-acylated hindered amine on the photostabilization of polymers was discussed. The effects of the N-acyl derivatives of 4-benzoyloxy-2,2,6,6-tetramethylpiperidine (6) in the photostabilization of polypropylene were compared. Although the stabilizing effects of all the N-acyl derivatives were lower than that of the N-oxyl derivative (7), N-acryloyl (4) and N-benzoyl (5) derivatives showed higher effects than that of parent NH 6. To discuss the stabilizing mechanism of N-acylated hindered amine, the reaction of N-acylated hindered amine with model hydroperoxide (tert-butyl hydroperoxide) was carried out at an elevated temperature (132°C). N-Acylated hindered amine decomposed tert-butyl hydroperoxide more rapidly than corresponding secondary hindered amine, and changed into the parent secondary amine.
Databáze:	OpenAIRE
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