PVC compositions stabilized thermally.

摘要

Flexible PVC compositions exhibiting high thermal and oxidative stability, containing aminouracyls oligomeric and / or polymeric, characterized by the fact that the oligomeric and / or polymeric aminouracyls consist of: - a repetitive group of formula (I): * * (Formula) ** wherein: R is H, C1-C18 linear or branched, cycloalkyl C5-C8, aryl, aryl substituted with -OH or C1-C8 (= substituted aryl), arylalkyl, alkylaryl; R1 is H, - (C = O) C1-C12 linear or branched, - (C = O) -O-C1-C12 linear or branched, - (C = O) -phenyl, unsubstituted or substituted with -OH, C1-C8 linear or branched C1-C8 alkoxy; Z is O or S; - linking groups between the repetitive groups of formula (I) the same or different as: - (CR2R3) n- where R2, R3 may be the same or different and each independently of the other is -H, C1-C12 alkyl C linear or branched or cyclic and n is an integer equal to or greater than 2; or 3-methylene-3, 5, 5-yl-trimethylcyclohexan-1-, methylenebis (4ciclohexilo), methylenebis (3-cyclohexyl), 1, 4-phenylene, 1-methyl-2, 4-phenylene, 4, 4¿- diphenylene; - terminal groups as: H, C1-C18 linear or branched alkyl, C5-C8 alkyl, C3-C18, aryl, substituted aryl, arylalkyl, alkylaryl, hydroxyalkyl C1-C18 alkoxyalkyl, C2-C18 cycloalkoxyalkyl C6-C10, I alkoxyaryl C7-C14, C7-C14 aryloxyalkyl, C2-C8 alkylthioalkyl, C6-C10 cycloalkylthioalkyl, C7-C14 alkylthioaryl, C7-C14 arylthioalkyl, C1-C18 alkylamine, disubstituted with C1-C18 linear or branched alkyl.