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Provided are mixtures of 1) compounds of the formula: wherein R1 is a saturated or unsaturated cyclic hydrocarbon optionally substituted with an alkyl and/or an OXO-ester, and R2 is a C4 to C14 hydrocarbyl; and 2) one or more second plasticizers selected from the group consisting of alkyl terephtha

Provided are mixtures of 1) compounds of the formula: wherein R1 is a saturated or unsaturated cyclic hydrocarbon optionally substituted with an alkyl and/or an OXO-ester, and R2 is a C4 to C14 hydrocarbyl; and 2) one or more second plasticizers selected from the group consisting of alkyl terephthalates, alkyl phthalates, alkyl benzoate esters, di-benzoate esters, esters of cyclohexane polycarboxylic acids, and dialkyl adipates. Also provided are plasticized polymer compositions containing said mixtures.

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1. A mixture comprising: 1) (i) at least two first plasticizer compounds of the formula: wherein each R1 is, independently, a phenyl group where the phenyl is substituted with an alkyl and/or an OXO-ester at the ortho-, meta-, or para-position, and each R2 is, independently, a C4 to C20 hydrocarbyl

1. A mixture comprising: 1) (i) at least two first plasticizer compounds of the formula: wherein each R1 is, independently, a phenyl group where the phenyl is substituted with an alkyl and/or an OXO-ester at the ortho-, meta-, or para-position, and each R2 is, independently, a C4 to C20 hydrocarbyl or ii) at least one first plasticizer compound(s) represented by one or more of the formulae: wherein R2 is a C4 to C20 hydrocarbyl,2) one or more second plasticizers comprising alkyl terephthalate, alkyl phthalate, alkyl benzoate ester, di-benzoate ester, ester of cyclohexane polycarboxylic acid, dialkyl adipate or a mixture thereof. 2. The mixture of claim 1, wherein at least one R1 is located at the ortho-, meta- or para-position. 3. The mixture of claim 1, wherein at least one R1 is phenyl located at the para-position. 4. The mixture of claim 1, wherein at least one R1 is tolyl. 5. The mixture of claim 1, wherein at least one R2 is not linear. 6. The mixture of claim 1, wherein the first plasticizer compound is a mixture of at least two compounds represented by the formula: wherein R1 is a phenyl group where the phenyl is substituted with an alkyl at the ortho-, meta-, or para-position, and R2 is a C4 to C20 hydrocarbyl, where R2 is branched in the first first plasticizer and R2 is linear in the second first plasticizer compound. 7. The mixture of claim 1, wherein at least one R1 is tolyl and at least one R2 is a C9 or C10 hydrocarbyl. 8. The mixture of claim 1, wherein the second plasticizer compound(s) comprises at least two compounds from the group consisting of alkyl terephthalates, alkyl phthalates, alkyl benzoate esters, di-benzoate esters, esters of cyclohexane polycarboxylic acids, and dialkyl adipates. 9. The mixture of claim 1, wherein the second plasticizer compound(s) comprises C4 to C12 alkyl terephthalates, C4 to C14 alkyl phthalates, C4 to C14 alkyl isophthalates, C7 to C13 alkyl benzoate esters, C4 to C13 dialkyl adipates, or combinations thereof. 10. The mixture of claim 1, wherein the second plasticizer compound(s) comprises one or more of di-n-butyl terephthalate, diisobutyl terephthalate, di-n-octyl terephthalate, diisooctyl terephthalate, di-2-ethylhexyl terephthalate, di-n-nonyl terephthalate, diisononyl terephthalate, di-n-decyl terephthalate, di-2-propyl heptyl terephthalate, diisodecyl terephthalate, di-n-nonyl phthalate, diisononyl phthalate, di-n-decyl phthalate, diisodecyl phthalate, di-2-propyl heptyl phthalate, di-n-undecyl phthalate, ditridecyl phthalate, diisotridecyl phthalate, di-n-propyl isophthalate, di-n-nonyl isophthalate, diisononyl isophthalate, di-n-decyl isophthalate, diisodecyl isophthalate, di-2-propyl heptyl isophthalate, di-n-undecyl isophthalate, diisotridecyl isophthalate, isononyl benzoate, nonyl benzoate, isodecyl benzoate, decyl benzoate, 2-propylheptyl benzoate, isoundecyl benzoate, isotridecyl benzoate, di-heptyl cyclohexanoate, di-2-ethylhexyl cyclohexanoate, di-n-nonyl cyclohexanoate, diisononyl cyclohexanoate, di-n-decyl cyclohexanoate, diisodecyl cyclohexanoate, di-2-propyl heptyl cyclohexanoate, diheptyl adipate, dioctyl adipate, diisononyl adipate, diisodecyl adipate, di 2-propylheptyl adipate, dipropylene glycol dibenzoate, diethylene glycol dibenzoate, triethylene glycol dibenzoate, or mixtures thereof. 11. The mixture of claim 1, wherein the second plasticizer compound(s) comprises one or more alkyl 1,2-cyclohexanedicarboxylates, alkyl 1,3-cyclohexanedicarboxylates and/or alkyl 1,4-cyclohexanedicarboxylates, where the alkyl has 4 to 13 carbons in the side chain. 12. The mixture of claim 1, wherein the second plasticizer compound(s) comprises one or more of di-(2-ethylhexyl) phthalate, diisononyl phthalate, diisonyl phthalate, diisodecyl phthalate, di-(2-propylheptyl) phthalate, heptylundecyl phthalate, nonylundecyl phthalate, diundecyl phthalate, diisoundecyl phthalate, diisotridecyl phthalate, diisonyl cyclohexanoate, bis(2-ethyl hexyl) cyclohexanoate, diisononyl cyclohexanoate, di-(2-ethylhexyl) adipate, diisononyl adipate, isononyl benzoate, isodecyl benzoate, and bis(2-ethylhexyl) terephthalate. 13. The mixture of claim 1, wherein the second plasticizer compound(s) comprises one or more of diisononyl phthalate, diisononyl adipate, isodecyl monobenzoate, and the first plasticizer comprises one or more substituted or unsubstituted biphenyl carboxylates. 14. The mixture of claim 1, wherein the first plasticizer(s) is present at 1 to 99 wt % and the second plasticizer(s) is present at 99 to 1 wt %, based upon the weight of the plasticizers. 15. A polymer composition comprising a thermoplastic polymer and 20 to 120 phr of the mixture of claim 1. 16. A polymer composition comprising 1) a thermoplastic polymer;2) (i) at least two first plasticizer compounds of the formula: wherein each R1 is, independently, a phenyl group where the phenyl is substituted with an alkyl and/or an OXO-ester at the ortho-, meta-, or para-position, and each R2 is, independently, a C4 to C20 hydrocarbyl; or ii) at least one first plasticizer compound(s) represented by one or more of the formulae: wherein R2 is a C4 to C20 hydrocarbyl;3) a second plasticizer comprising alkyl terephthalate, alkyl phthalate, C7 to C13 alkyl benzoate ester, di-benzoate ester, ester of cyclohexane polycarboxylic acid, dialkyl adipate or a mixture thereof. 17. The polymer composition of claim 16, wherein the thermoplastic polymer comprises vinyl chloride resins, polyesters, polyurethanes, ethylene-vinyl acetate copolymer, rubbers, poly(meth)acrylics and combinations thereof. 18. The polymer composition of claim 16, wherein the thermoplastic polymer is polyvinyl chloride. 19. The polymer composition of claim 16, wherein the thermoplastic polymer is present at 99 to 40 wt % and the plasticizers are present at 1 to 60 wt %. 20. A wire and cable coating formulation comprising: i) 100 parts by weight PVC; (ii) 20 to 80 parts of the compounds of the mixture of claim 1; (iii) a filler; and (iv) a stabilizer. 21. The wire and cable coating formulation of claim 20, wherein the filler is present at from 1 to 100 parts by weight per 100 parts of the PVC and the stabilizer is present at from 5 to 15 parts by weight per 100 parts of the PVC. 22. A wire or cable coated with a composition of claim 20. 23. A cable filling compound comprising: i) 100 parts by weight PVC; ii) 20 to 80 parts by weight per 100 parts of the PVC of the mixture of claim 1; iii) 1 to 600 parts by weight per 100 parts of the PVC of filler; and iv) 5 to 15 parts by weight per 100 parts of the PVC of stabilizer. 24. The mixture of claim 16, wherein the composition comprises the plasticizers in an amount of from 5 to 90 phr. 25. The polymer composition of claim 16, wherein the composition further comprises an additive selected from the group consisting of trialkyl trimellite, alkylsulphonic ester, glycerol ester, isosorbide ester, citric ester, alkylpyrrolidone, and epoxidized oil. 26. The polymer composition of claim 16, wherein the thermoplastic polymer is a PVC suspension, a PVC microsuspension, a PVC emulsion, or a combination thereof. 27. The polymer composition of claim 16, further comprising: an additive selected from the group consisting of a filler, a pigment, a matting agent, a heat stabilizer, an antioxidant, a UV stabilizer, a flame retardant, a viscosity regulator, a solvent, a deaerating agent, an adhesion promoter, a process aid, and a lubricant. 28. A floor covering, wallpaper, tarpaulin, coated textile, or wall covering comprising the composition of claim 16. 29. A film comprising the polymer composition of claim 16, wherein the film is a roofing sheet, a tarpaulin, an advertising banner, synthetic leather, packaging film, a medical article, a toy, a seal, or an automobile interior article. 30. The mixture of claim 1, wherein the second plasticizer compound(s) comprises one or more of diisononyl phthalate, diisononyl adipate, isodecyl and monobenzoate. 31. A mixture comprising: 1) at least one first plasticizer compound(s) of the formula: where R2 is, independently, a C4 to C14 hydrocarbyl, and 2) one or more second plasticizers comprising alkyl terephthalate, alkyl phthalate, alkyl benzoate ester, di-benzoate ester, ester of cyclohexane polycarboxylic acid, or a mixture thereof. 32. A mixture comprising: 1) at least one first plasticizer compound(s) of the formula: where R2 is, independently, a C4 to C14 hydrocarbyl; and2) one or more second plasticizers comprising dialkyl adipate. 33. The mixture of claim 32 wherein the dialkyl adipate has 4 to 13 carbon atoms. 34. The mixture of claim 32 wherein the dialkyl adipate is diheptyl adipate, diisononyl adipate, diisodecyl adipate, or di-2-propylheptyl adipate. 35. The mixture of claim 32 wherein the dialkyl adipate is diisononyl adipate. 36. The mixture of claim 32 wherein each R2 is, independently, a C6, C7, or C9 hydrocarbyl. 37. The mixture of claim 32 wherein each R2 is, independently, hexyl, heptyl, or nonyl, or an isomer thereof. 38. The mixture of claim 32 wherein each R2 is, independently, hexyl, heptyl, or nonyl, or an isomer thereof, and the dialkyl adipate is diisononyl adipate.