MODIFIED STYRENIC BLOCK COPOLYMER COMPOUNDS HAVING IMPROVED ELASTIC PERFORMANCE

摘要

The present invention relates to an elastomeric composition, comprising: from 25 % to 75 % by weight of a block copolymer having at least two monoalkenyl arene blocks separated by a hydrogenated conjugated diene block wherein one monoalkenyl arene block is larger than the other monoalkenyl arene block and at least one of the monoalkenyl arene blocks has a number average molecular weight from 6,000 to 12,000, and a monoalkenyl arene content from 13 to 24 wt.%; from 12 % to 60 % by weight of a polyolefin; and from 13 to 28 % by weight of a tackifying resin; wherein the melt flow rate of the composition is at least 1 g/10 min at 230 ~C/5 kg. The present invention further relates to elastic fibers or films containing the said composition.