| abstract |
(57) [Summary] (Corrected) [Constitution] Polyester having functional group and formula (1) [ Wherein A, B and D are the same or different C 6-20 aromatic or araliphatic hydrocarbon groups, (1) a carbodiimide group is bonded to an aromatic ring carbon atom, and (2) a carbodiimide group On the other hand, at least one aromatic ring position of ortho is substituted with at least one aromatic, aliphatic and / or cycloaliphatic substituent having at least 2 carbon atoms, and further in A and D (3) at least One NCO group is attached to one or more aromatic ring carbon atoms and n is 0-3] with an incorporable sterically hindered carbodiimide. The effect stabilizes the ester-containing plastic against deterioration by heat and / or hydrolysis and does not give rise to volatile products even at very high temperatures. |