Polypropylene fibres
AssigneeATOFINA Research S.A.
InventorAxel Demain
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Abstract
A polypropylene fibre including a polypropylene blend comprising up to 15% by weight of sPP at least 10% by weight of a first isotactic polypropylene produced by a metallocene catalyst, and optionally a second isotactic polypropylene produced by a Ziegler-Natta catalyst.
Claims22
A polypropylene fibre including propylene blend comprising a syndiotactic polypropylene in an amount of up to 15% by weight and at least 10% by weight of a first isotactic polypropylene having a melting temperature of from 80° C. to 155° C., and optionally a second isotactic polypropylene having a melting temperature of from 159° C. to 169° C. wherein the first isotactic polypropylene has a dispersion index (D) of from 2 to 3.5.
A polypropylene fibre comprising a blend of a syndiotactic polypropylene (sPP) and an isotactic polypropylene (miPP) produced by a metallocene catalyst, said sPP being present in said polypropylene blend in an amount of up to 15% by weight and said isotactic polypropylene being present in said blend in an amount of at least 10% by weight.
A polypropylene fibre comprising a polypropylene blend of a syndiotactic polypropylene (sPP) in an amount of up to 15% by weight and at least 10% by weight of a first isotactic (miPP) polypropylene produced by a metallocene catalyst having a melting temperature of from 80° C. to 155° C., and optionally a second isotactic polypropylene (znPP) produced by a Ziegler-Natta catalyst and having a melting temperature of from 159° C. to 169° C.
Dependencies are inferred from the claim text.