Polypropylene fibers and fabrics

D - Textiles – Paper – 01 – F

Patent

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Details

D01F 6/06 (2006.01) C08F 110/06 (2006.01) C08J 5/18 (2006.01) D01D 5/098 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01) C08F 210/06 (2006.01)

Patent

CA 2420072

The present invention is a meltblown fiber and a fabric manufactured from the fiber comprising reactor grade polypropylene having a melt flow rate of from 100 to 5000 and having less than 500 stereo defect s per 1000 units. Further, the polypropylene is typically produced from a metallocene catalyzed process, the metallocene being at least one bridged 2,4 di-substituted indenyl metallocene in one embodiment, an a bridged 4-phenyl indenyl metallocene in another embodiment. The metallocene is part of a system that can include a fluorided support and a non-coordinating anion activator.

L'invention concerne une fibre obtenue par fusion et soufflage et un tissu fabriqué à partir de ladite fibre comprenant un polypropylène de qualité nucléaire dont le taux de fusion est compris entre 100 et 5 000 et possède moins de 500 défauts stéréoscopiques pour 1 000 unités. De plus, le polypropylène est généralement produit à partir d'un procédé catalysé par un métallocène, celui-ci étant au moins un métallocène indényl 2,4 di-substitué à un pont dans un mode de réalisation, un métallocène indényl 4-phényl à un pont dans un autre mode de réalisation. Ce métallocène appartient à un système pouvant comporter un support fluoré et un activateur d'anions non-coordonnant.

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