Patent ID: 6090903
Filing Date: 2000-07-18
Classification: C08F

Abstract:
A propylene homopolymer, having a melt flow rate (MFR) determined at a temperature of 230.degree. C. under a load of 2.16 kg of from 0.1 to 20 g/10 min., a 23.degree. C. xylene-soluble component content of not more than 6% by weight and an isoblock content [IB] of at least 3 mol % as determined by the following equation (1) from Pmmmr, Pmmrr and Pmrrm, which are absorption intensities attributed to isoblock chain in xylene-insoluble component by .sup.13 C-NMR spectrum:[IB]=[Pmmmr]+[Pmmrr]+[Pmrrm] (1)wherein [Pmmmr], [Pmmrr] and [Pmrrm] are the relative intensity ratio (mol %) of Pmmmr, Pmmrr and Pmrrm, respectively, which are absorption intensities attributed to isoblock chain.