41. The rifle was packed in a polystyrene tray with a printed cardboard sleeve. 42. They imported the technology and began making tunnels out of the polystyrene foam. 43. It also produces acrylic glass, polystyrene , thermoplastic elastomer and synthetic rubber. 44. Polystyrene was accidentally discovered in 1839 by Eduard Simon.45. This is a different material from the extruded polystyrene used for Styrofoam insulation. 46. Like polystyrene itself, it is optically transparent and brittle in mechanical behavior. 47. See biodegradation, styrofoam, and Polystyrene # Extruded _ polystyrene _ foam. 48. See biodegradation, styrofoam, and Polystyrene # Extruded _ polystyrene _ foam. 49. Diamines are attached as carbamates to hydroxymethyl polystyrene resin. 50. Don't get rock wool or bits of polystyrene in your drink!
