| abstract |
(57) [Problem] To provide a polyethylene resin which gives an inflation film excellent in balance of physical properties such as impact resistance and low uneven thickness. SOLUTION: The density obtained by using a Ziegler type catalyst is 940 to 970 kg / m 3 , and the MFR (temperature: 190 ° C., Load 49N) 0.01-50 g / 10 min and temperature 19 Tan δ at 0 ° C., angular frequency 1.5 × 10 -2 rad / sec Is introduced into the extruder substantially without contact with air after polymerization, By contacting with an oxygen-containing gas in this system and then melt-kneading, tan δ of the resin is increased to produce a modified polyethylene resin. |