| 摘要 |
There are provided novel polymeric blends comprising from 45 to 90 percent by weight of at least one vinylaromatic resinous material, 10 to 55 percent by weight of at least one vinylidene chloride polymer and, optionally but preferably, an effective amount of at least one blowing or expansion agent which provide products having improved oxygen and water barrier properties, improved toughness, and improved flammability resistance. |
