| 摘要 |
<p>Flat articles for the replacement of textile articles consist of a foamed propylene polymer contng. a major proportion of a high mol. wt. isotactic propylene polymer, and a minor proportion of a low mol. wt. propylene polymer, which is soluble in heptane and contains atactic of isotactic components. The article may also contain a third polymer, which is pref. a polyolefin, and has a low mol. wt. and/or is soluble in heptane. The article pref. contains a propylene polymer prepd. by gas phase polymsn. which may contain catalyst residues.</p> |
