New stabilisers for polymers on the basis of isophorone diisocyanate

摘要

New thermal and photostabilisers on the base of a sterically hindered phenol and sterically hindered amines were synthesised by reaction with isophorone diisocyanate (IPDI). The thermal and photostabilisation effectiveness of synthesised compounds was investigated in PP films. Two phenol moieties linked through IPDI exhibited no lightstabilising efficiency but high thermostabikising activity. Combined amine-phenol derivatives coupled by IPDI were less effective in photoprotection of PP than derivatives of two HAS coupled by IPDI. All derivatives afforded very good protection of PP against thermo-oxidation.