Ester mixture, useful e.g. as plasticizers for plastics, preferably polyvinyl chloride, and for the preparation of pipeline, cables and coatings, comprises one or more alkyl ester compound and benzyl ester compound

摘要

Ester mixture comprises 2-98 wt.% of one or more ester compound (I) and 2-98 wt.% of another ester compound (II). Ester mixture comprises 2-98 wt.% of one or more ester compound of formula (Z-(COOR 2) m-n(COOR 1) n) (I) and 2-98 wt.% of another ester compound of formula (Z-(COOR 2) m) (II). R 11-20C-alkyl, preferably n-butyl, 2-ethylhexyl or isononyl; R 2benzyl (optionally substituted with 1-4C-alkyl or halo); Z : m-valent optionally saturated, cyclic or polycyclic 2-10C-hydrocarbon; m : 2-4; and n : 1-m. An independent claim is included for the preparation of the ester mixture comprising: reacting at least an aromatic or aliphatic polycarboxylic acid or its derivatives, at least a benzylalcohol and at least an aliphatic alcohol at 50-300[deg] C and 2 mbar to 4 bar, optionally in the presence of a catalyst; and simultaneously removing the reaction water from the mixture by suitable method.