Crystalline copolymers of propylene
The present invention is concerned with new crystalline copolymers of propylene, and with the process for preparing them. Novel crystalline copolymers of propylene with minor proportions of ethylene and/or alpha-olefins, endowed with very good mechanical properties, a low melting point and a limited...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The present invention is concerned with new crystalline copolymers of propylene, and with the process for preparing them.
Novel crystalline copolymers of propylene with minor proportions of ethylene and/or alpha-olefins, endowed with very good mechanical properties, a low melting point and a limited solubility in xylene at 25° C., and the process for preparing them by means of the polymerization of mixtures of propylene with ethylene and/or alpha-olefins of suitable composition, by using catalysts obtained from stereorigid and chiral compounds of zirconium, and methylalumoxanic compounds. |
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