FIELD: chemistry.
SUBSTANCE: invention relates to polyethylene compositions suitable for making pipes and films. Disclosed is a composition of polyethylene for making extruded articles, having density of 0.945 to 0.955 g/cm3, determined in accordance with ISO 1183 at 23 °C; MIF/MIP ratio of 23 to 40; MIF value making from 8.5 to 18 g/10 min; HMWcopo index making from 3.5 to 20; and an index of long-chain branching (LCB) equal to or greater than 0.45. Disclosed also is a method of producing the disclosed polyethylene composition.
EFFECT: technical result is disclosed composition of polyethylene enables to obtain pipes and other extruded articles with improved mechanical properties.
8 cl, 1 dwg, 1 tbl, 6 ex
| Title | Year | Author | Number |
|---|---|---|---|
| COMPOSITION OF POLYETHYLENE FOR FILM PRODUCTION | 2016 |
|
RU2653854C1 |
| COMPOSITION OF POLYETHYLENE FOR BLOW MOULDING ARTICLES WITH HIGH RESISTANCE TO STRESS CRACKING | 2017 |
|
RU2722013C1 |
| COMPOSITION OF POLYETHYLENE, HAVING HIGH DEGREE OF SWELLING | 2017 |
|
RU2720803C1 |
| POLYETHYLENE COMPOSITION FOR BLOW MOLDING HAVING HIGH SWELL RATIO AND IMPACT RESISTANCE | 2017 |
|
RU2720236C1 |
| POLYETHYLENE COMPOSITION FOR MAKING FILMS | 2019 |
|
RU2767655C1 |
| POLYETHYLENE COMPOSITION FOR BLOW MOLDING HAVING HIGH STRESS CRACKING RESISTANCE | 2017 |
|
RU2720235C1 |
| POLYETHYLENE COMPOSITION WITH HIGH DEGREE OF SWELLING OF EXTRUDED MELT, RESISTANCE TO CRACKING UNDER ENVIRONMENTAL INFLUENCE, AND IMPACT STRENGTH | 2019 |
|
RU2759153C1 |
| POLYETHYLENE COMPOSITION WITH RESISTANCE TO ENVIRONMENTAL CRACKING | 2018 |
|
RU2751343C1 |
| POLYETHYLENE COMPOSITION WITH HIGH RESISTANCE TO STRESS CRACKING | 2015 |
|
RU2655381C1 |
| POLYETHYLENE COMPOSITION WITH HIGH RESISTANCE TO STRESS CRACKING | 2015 |
|
RU2654479C1 |
