Polypropylene fibres
AssigneeATOFINA Research S.A.
InventorAxel Demain
Life of this patent
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Abstract
A polypropylene fibre including at least 80% by weight of a first isotactic polypropylene produced by a metallocene catalyst, and from 5 to 20 by weight of a second isotactic polypropylene produced by a Ziegler-Natta catalyst.
Claims14
A polypropylene fibre including at least 80% by weight of a first isotactic polypropylene produced by a metallocene catalyst, and from 5 to 20% by weight of a second isotactic polypropylene produced by a Ziegler-Natta catalyst.
A polypropylene fibre according to any foregoing claim wherein the first polypropylene has a melt flow index (MFI) of from 1 to 2500 g/10 mins.
A polypropylene fibre according to any foregoing claim wherein the second polypropylene has a dispersion index of from 3 to 12.
A polypropylene fiber according to any foregoing claim wherein the second polypropylene has a melting temperature in the range of from 80 to 169° C.
A polypropylene fibre according to any foregoing claims further comprising up to 15% by weight of a syndiotactic polypropylene (sPP).
A fabric produced from the polypropylene fibre according to any foregoing claim.
Dependencies are inferred from the claim text.