WEICHE ZUSAMMENSETZUNGEN AUF BASIS VON PROPYLENPOLYMEREN
The flexible compositions having no elastomeric fractions comprise:A) from 10 to 90 parts by weight of random copolymer of propylene and at least one comonomer selected from ethylene and C4-C8 alpha-olefins having a melting point of at least 100° C. and not exceeding 140° C. and a flow index measure...
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Main Authors | , |
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Format | Patent |
Language | German |
Published |
15.10.2006
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Edition | 7 |
Subjects | |
Online Access | Get full text |
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Summary: | The flexible compositions having no elastomeric fractions comprise:A) from 10 to 90 parts by weight of random copolymer of propylene and at least one comonomer selected from ethylene and C4-C8 alpha-olefins having a melting point of at least 100° C. and not exceeding 140° C. and a flow index measured at 230° C. under a weight of 2.16 kg (ASTM standard D1238, 1986) of from 0.5 to 15 g/10 min, andB) from 90 to 10 parts by weight of plastomer prepared with participation of a metallocene catalyst and consisting of a random copolymer of ethylene and at least one C3-C10 alpha-olefin having a density of from 0.860 to 0.920 g/cm , a melt flow index measured at 190° C. under a weight of 2.16 kg (ASTM standard D1238, 1986) of from 0.5 to 30 g/10 min, and a molecular mass distribution Mw/Mn of at most 4.These compositions provide an excellent compromise between flexibility and low-temperature impact resistance and heat resistance. They are suitable for producing flexible mouldings and very particularly for the manufacture by extrusion of films, of flexible sheeting, and of cables. |
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Bibliography: | Application Number: AT20000952998T |