| 摘要 |
<p>Polymerizing styrene by mass polymerization in the presence of a polydiorganosiloxane gum having 0.1 to 30 mol percent methylvinylsiloxane units in amounts of from 0.25 to 30 weight percent polydiorganosiloxane gum, produces a toughened polystyrene composition having improved notched Izod impact strength and improved lubricity. The polystyrene can be used to cold form objects and can be used in applications where moderate lubricity is required.</p> |
