Poly(vinyl acetal) resin compositions, layers, and interlayers having enhanced optical properties

A plasticizer comprising at least one of following:

• i. a terephthalate comprising one of the following compounds:
• bis-(2-ethylhexyloxyethoxyethoxyethyl) terephthalate, bis-(2-ethylhexyloxyethoxyethyl) terephthalate, bis-(2-ethylhexyloxyethyl) terephthalate, bis-(dodecyl) terephthalate, bis-(ethoxyethoxyethyl) terephthalate, bis-(ethoxyethoxyethoxyethyl) terephthalate, bis-(butoxyethoxyethoxyethyl) terephthalate, or combinations thereof;
• ii. an isophthalate comprising one of the following compounds:
• bis-(2-ethylhexyloxyethoxyethoxyethyl)isophthalate, bis-(2-ethylhexyloxyethoxyethyl)isophthalate, bis-(2-ethylhexyloxyethyl)isophthalate, bis-(butoxyethoxyethyl)isophthalate, bis-(butoxyethyl)isophthalate, bis-(dodecyl)isophthalate, bis-(ethoxyethoxyethyl)isophthalate bis-(ethoxyethoxyethyl)isophthalate, bis-(ethoxyethyl)isophthalate, bis-(2-ethylhexyloxyethoxyethoxyethyl)isophthalate, bis-(ethoxyethoxyethoxyethyl)isophthalate, bis-(butoxyethoxyethoxyethyl)isophthalate, or combinations thereof;
• iii. a phthalate comprising one of the following compounds:
• bis-(2-ethylhexyloxyethoxyethoxyethyl)phthalate, bis-(2-ethyl hexyloxyethoxyethyl)phthalate, bis-(2-ethylhexyloxyethyl)phthalate, bis-(2-ethylhexyloxyethoxyethoxyethyl)phthalate, bis-(ethoxyethoxyethoxyethyl)phthalate, bis-(butoxyethoxyethoxyethyl)phthalate, or combinations thereof;
• iv. a benzoate comprising the following compound:
• 2-ethylhexyloxyethoxyethoxyethyl benzoate;
• v. a toluate comprising one of the following compounds:
• diethylene glycol di-m-toluate, diethylene glycol di-p-toluate, di-α-propylene glycol di-o-toluate, di-α-propylene glycol di-p-toluate, di-α-propylene glycol di-p-toluate, di-β-propylene glycol di-m-toluate, di-β-propylene glycol di-m-toluate, di-β-propylene glycol di-o-toluate, tetraethylene glycol di-m-toluate, tetraethylene glycol di-o-toluate, tetraethylene glycol di-p-toluate, tetra-α-propylene glycol di-o-toluate, tetra-α-propylene glycol di-p-toluate, tetra-α-propylene glycol di-p-toluate, tetra-β-propylene glycol di-m-toluate, tetra-β-propylene glycol di-m-toluate, tetra-β-propylene glycol di-o-toluate, triethylene glycol di-m-toluate, triethylene glycol di-o-toluate, tri-α-propylene glycol di-o-toluate, tri-α-propylene glycol di-p-toluate, tri-α-propylene glycol di-p-toluate, tri-β-propylene glycol di-m-toluate, tri-β-propylene glycol di-m-toluate, tri-β-propylene glycol di-o-toluate, or combinations thereof;
• and/or
• vi. a mixed benzoate comprising one of the following compounds:
• 1,4-cyclohexanedimethanol dibenzoate, 1,4-cyclohexanedimethanol benzoate pelargonate, 1,4-cyclohexanedimethanol benzoate laurate, 1,4-cyclohexanedimethanol benzoate caprate, 1,4-cyclohexanedimethanol benzoate caprylate, 3-methyl-1,5-pentanediol dibenzoate, diethyleneglycol benzoate caprate, diethyleneglycol benzoate caprylate, diethyleneglycol benzoate laurate, dipropyleneglycol benzoate pelargonate, tetraethyleneglycol benzoate caprate, tetraethyleneglycol benzoate caprylate, tetraethyleneglycol benzoate laurate, triethyleneglycol benzoate laurate, or combinations thereof.