Patent ID: 7964658

Claim:
A plasticizer composition, comprising: dialkyl terephthalate, wherein the alkyl radicals of said dialkyl terephthalate have a longest carbon chain of at least 4 carbon atoms and have a total number of carbon atoms per alkyl radical of 5; and at least one primary plasticizer selected from the group consisting of phthalic acid dialkyl esters, trimellitic acid trialkyl esters, adipic acid dialkyl esters, 1,2-cyclohexanedioic acid alkyl esters, 1,3-cyclohexanedioic acid alkyl esters with alkyl=alkyl radical having 8 to 10 carbon atoms, 1,4-cyclohexanedioic acid alkyl esters with alkyl=alkyl radical having 8 to 10 carbon atoms, glycol dibenzoates, alkylsulphonic esters of phenol with alkyl=alkyl radical having 8 to 22 carbon atoms, acylated citric acid trialkyl esters, non-acylated citric acid trialkyl esters, polymer plasticizers, glycerol esters and mixtures thereof, with the proviso that the primary plasticizer is not dioctyl phthalate, isononyl benzoate or dioctyl terephthalates; and wherein from 85% to 98% of the alkyl radicals of said dialkyl terephthalate are n-pentyl radicals and from 15% to 2% are methylbutyl radicals.