| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a polyethylene resin composition performing high speed molding because of its high crystallization rate, having such high rigidity that can be made thin while satisfactory rigidity is maintained and having excellent impact resistance. <P>SOLUTION: The polyethylene resin composition satisfies following requirements: (a) the composition contains 60 to 40 wt.% low molecular weight component (A) comprising an ethylene homopolymer having 100 to 350 g/10 min MFR according to JIS K7210 and 40 to 60 wt.% high molecular weight component (B) comprising a copolymer of ethylene and a 3-20Cα-olefin, (b) the composition has 0.1 to 2.0 g/10 min MFR, (c) 955 to 970 kg/m<SP>3</SP>density (d)≤0.2 terminal vinyl amount per 1,000 carbon atoms measured by an IR method, (e) 0.5 to 1.5 ppm titanium residue in the resin and (f)≤1.5 min crystallization starting time at a temperature lower than a melting point (Tm) by 11°C. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
