FIELD: chemistry.
SUBSTANCE: invention relates to a plasticizer composition for polyvinylchloride comprising one of the compounds of formulae 1-1 to 1-15 as set forth in the claims, as an isophthalate compound of a hybrid type and at least two compounds selected from the group consisting of the compounds of the formulae 1-16 to 1-21 given in the claims as an isophthalate compound of a non-hybrid type, wherein the total amount of the hybrid type isophthalate compound and the non-hybrid type isophthalate compound in the plasticizing composition can be from 5 to 80 % by weight of the hybrid type isophthalate compound and 20 to 95 % by weight of all isophthalate compounds of a non-hybrid type with respect to the total amount of the plasticizer composition. Invention also relates to a process for preparing a polyvinyl chloride resin composition.
EFFECT: resin composition contributes to environmental safety and good physical properties, which include plasticization efficiency, tensile strength, elongation, migration loss, resistance to loss of volatile substances et cetera.
10 cl, 49 ex, 5 tbl
