FIELD: chemistry.
SUBSTANCE: invention relates to an ethylene polymer having a density greater than or equal to about 0.954 g/cm3, high melt index HLMI in the range from about 10 to about 45 g/10 min, ratio of high melt index to melt index HLMI/MI in range from about 175 to about 600, slope of viscosity curve in Pa⋅s-1 as function of shear rate per second of ethylene polymer at 100 s-1 in the range from about 0.15 to about 0.30 and resistance to cracking at stress caused by environmental impact ESCR from 10 % of plaques, greater than or equal to about 800 hours.
EFFECT: these polymers have manufacturability and swelling of extruded flow better than that of chromium-based resins, but with improved rigidity and resistance to cracking at stress and can be used in blow molding and other special purposes.
20 cl, 1 dwg, 6 tbl
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