| 摘要 |
polyolefin-based compositions intended for spinning from melt and molded products prepared from melt by rapid spinning method. SUBSTANCE: composition comprises polyolefin having flow behavior index from 580 to 1000 g/10 min. , flow behavior index from 15 to 3000 g/10 min., molecular weight from 75,000 to 350,000 g/mole, polydispersity of MW/Mn from 1.8 to 3.5, viscosity from 70 to 300 cubic cm/g, melting point from 120 to 165 C, length of isotactic unit from 25 to 150 and ether-extractable fraction of less than 2% calculated for total weight of polyolefin. Polyolefin is prepared in the presence of metallocene catalyst and hydrogen in amount from 2.8 to 9.2 vol %. EFFECT: improved properties of the polyolefin composition. 6 cl, 27 ex |
