FIELD: chemistry.
SUBSTANCE: proposed multi-modal polyethylene composition has density 0.935 g/cm3 or more, and contains a mixture of a first polyethylene component and a second polyethylene component. The first polyethylene component contains bimodal polyethylene. The second polyethylene component contains uni-modal polyethylene, obtained in the presence of metallocene, which contains two cyclopentadienyl rings. This composition is characterised by a balanced TD/MD ratio. A film with 1.0 mm thickness, obtained from the multi-modal polyethylene composition has lower limit of Elmendorf tear strength TD of 100 g or more.
EFFECT: improvement of characteristics of products.
8 cl, 5 tbl, 5 ex
| Title | Year | Author | Number |
|---|---|---|---|
| POLYETHYLENE FILMS | 2004 |
|
RU2349611C2 |
| IMPROVED POLYMERISATION METHODS USING METALLOCENE CATALYSTS, POLYMER PRODUCTS AND USE THEREOF | 2007 |
|
RU2446179C2 |
| FILMS WITH HIGH TEAR RESISTANCE, MADE OF POLYETHYLENES OBTAINED WITH HAFNOCENE CATALYST | 2004 |
|
RU2348659C2 |
| METHOD OF PREPARING BIMODAL POLYOLEFIN AND FILMS BASED THEREON | 2003 |
|
RU2315776C2 |
| FILM COMPOSITION | 2013 |
|
RU2631651C2 |
| MULTIMODAL POLYETHYLENE FILM | 2017 |
|
RU2757914C2 |
| COMPOSITION FOR COATING, METHOD OF PRODUCTION THEREOF AND SUBSTRATE WITH COATING MADE THEREFROM | 2004 |
|
RU2333924C2 |
| MULTIMODAL POLYETHYLENE COMPOSITION AND FILM INCLUDING IT | 2017 |
|
RU2759997C2 |
| BIMODAL POLYETHYLENE COPOLYMER AND FILM MADE OF IT | 2019 |
|
RU2797523C2 |
| POLYETHYLENE FILM HAVING IMPROVED MECHANICAL PROPERTIES AND IMPERMEABILITY, AND METHOD OF MAKING SAID FILM | 2007 |
|
RU2447096C2 |
