| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a resin composition that can obtain a resin for a high-density polyethylene extruded foam sheet that excels in rigidity, and has a high expansion ratio. <P>SOLUTION: The polyethylene-based resin composition includes: a high-density polyethylene (1) in which the density is 935-970 kg/m<SP POS="POST">3</SP>at least, and the long chain branching in the fraction of at least 100,000 of Mn when performed by the molecular weight classification is at most 0.10 per the main chain 1,000 carbon numbers; and a polyethylene resin (2) in which the density is 910-970 kg/m<SP POS="POST">3</SP>, MFR is 0.1-100 g/10 minutes, two peaks are shown in the molecular weight measurement by GPC, Mw/Mn is 2.0-7.0, and the number of the long chain branching in the fraction of at least 100,000 of Mn when performed by the molecular weight classification is at least 0.15 per the main chain 1,000 carbon numbers, wherein the content of the polyethylene resin (2) is at least 5 pts.wt. and at most 400 pts.wt. based on 100 pts.wt. of the high-density polyethylene (1). <P>COPYRIGHT: (C)2013,JPO&INPIT |
