| abstract |
The present invention is a meltblown fiber and a fabric manufactured from th e 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. |