FIELD: chemistry.
SUBSTANCE: invention relates to polyethylene compositions suitable for production of various types of moulded articles. Disclosed is a polyethylene composition having the following features: 1) a density of from 0.940 to 0.955 g/cm3 determined according to ISO 1183 at 23 °C; 2) MIF/MIP ratio of 12 to 30; 3) Mz from 2,000,000 to 4,500,000 g/mol; 4) value of η0.02, which is from 160,000 to 300,000 Pa·s; 5) indicator of long-chain branching (ILCB) equal to or greater than 0.75. Also disclosed is a method of producing said composition and an article obtained therefrom.
EFFECT: technical result is disclosed composition provides a balance of mechanical properties and manufacturability during processing.
10 cl, 1 dwg, 1 tbl, 2 ex
| Title | Year | Author | Number |
|---|---|---|---|
| COMPOSITION OF POLYETHYLENE FOR BLOW MOULDING ARTICLES WITH HIGH RESISTANCE TO STRESS CRACKING | 2017 |
|
RU2722013C1 |
| POLYETHYLENE COMPOSITION FOR BLOW MOLDING HAVING HIGH STRESS CRACKING RESISTANCE | 2017 |
|
RU2720235C1 |
| POLYETHYLENE COMPOSITION FOR BLOW MOLDING HAVING HIGH SWELL RATIO AND IMPACT RESISTANCE | 2017 |
|
RU2720236C1 |
| POLYETHYLENE COMPOSITION WITH RESISTANCE TO ENVIRONMENTAL CRACKING | 2018 |
|
RU2751343C1 |
| POLYETHYLENE COMPOSITION WITH HIGH DEGREE OF SWELLING OF EXTRUDED MELT, RESISTANCE TO CRACKING UNDER ENVIRONMENTAL INFLUENCE, AND IMPACT STRENGTH | 2019 |
|
RU2759153C1 |
| COMPOSITION OF POLYETHYLENE FOR FILM PRODUCTION | 2016 |
|
RU2653854C1 |
| POLYETHYLENE COMPOSITION FOR MAKING FILMS | 2019 |
|
RU2767655C1 |
| POLYETHYLENE COMPOSITION HAVING HIGH MECHANICAL PROPERTIES AND ADAPTABILITY IN PROCESSING | 2016 |
|
RU2688145C1 |
| POLYETHYLENE COMPOSITION WITH HIGH RESISTANCE TO STRESS CRACKING | 2015 |
|
RU2655381C1 |
| POLYETHYLENE COMPOSITION FOR BLOW MOULDING HAVING HIGH STRESS CRACKING RESISTANCE | 2014 |
|
RU2656571C2 |
