An ethylene polymer excellent in molding processability represented by uniform
extensibility, drawdown resistance, swell and extrudability, and mechanical properties
represented by rigidity, impact resistance and ESCR, is provided. Particularly,
an ethylene polymer remarkably excelent in balance between rigidity and ESCR as
compared with a conventionally known ethylene polymer is provided. An ethylene
polymer, which is an ethylene homopolymer or a copolymer of ethylene with an -olefin
having a carbon number of from 3 to 20, and which satisfies the following conditions
(1) to (4): (1) the melt index (HLMI) under a load of 21.6 kg at 190 C. is
from 0.1 to 1000 g/10 min, (2) the density (d) is from 0.935 to 0.985 g/cm3,
(3) the relation between HLMI and d satisfies the following formula (i): d0.00900log(HLMI)+0.951,
(4) the relation between ESCR and the flexural modulus (M) satisfies the following
formula (ii): M-7310log(ESCR)+32300.