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