Syndiotactic crystalline copolymer of propylene and butene-1

Syndiotactic crystalline copolymer of propylene and butene-1

The present invention relates to provide crystalline copolymer of propylene and butene-1 with an essentially syndiotactic structure, which have crystalline structure even in the region where content of butene-1 is relatively high and which is excellent in stiffness. A crystalline copolymer of propyl...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: SADATOSHI, HAJIME
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:The present invention relates to provide crystalline copolymer of propylene and butene-1 with an essentially syndiotactic structure, which have crystalline structure even in the region where content of butene-1 is relatively high and which is excellent in stiffness. A crystalline copolymer of propylene and butene-l with an essentially syndiotactic structure, the copolymer containing from 31 to 99 mole % of butene-l and having an intrinsic viscosity [ eta ] of from 0.5 to 10 dl/g when measured in tetralin at 135 DEG C and a crystalline structure.