It is Solid form of Styrene type acrylic resin.
It can be dissolved in ester, ketone and aromatics but insoluble in 200# gasoline and alcohol.
Solid Acrylic Resin AR-66 is a copolymer of methyl methacrylate and n-butyl methacrylate.
It used in applications ofgravure inks, silk screen printing inks, plastic coating...