FIELD: chemistry.
SUBSTANCE: invention concerns polymer film production technology, particularly polyethylene films with improved balanced physical and mechanical properties. Method of obtaining film involves obtaining ethylene-based polymer by reaction of links derived from ethylene and co-monomer in the presence of hafnium-based metallocene at 70 to 90°C, under absolute partial ethylene pressure of 120 to 260 pounds per square inch at co-monomer to ethylene ratio of 0.01 to 0.02 and obtained polymer melt extrusion under conditions sufficient for obtaining polyethylene film with 1% secant modulus over 25000 pounds per square inch, load hit resistance over 500 g/mm and longitudinal tear resistance over 500 g/mm.
EFFECT: obtaining polymer films, particularly polyethylene films with improved balanced physical and mechanical properties.
7 cl, 3 tbl, 17 ex
| Title | Year | Author | Number |
|---|---|---|---|
| IMPROVED POLYMERISATION METHODS USING METALLOCENE CATALYSTS, POLYMER PRODUCTS AND USE THEREOF | 2007 |
|
RU2446179C2 |
| METHODS FOR PRODUCTION OF POLYMERS WITH CONTROLLED COMPOSITION DISTRIBUTION | 2005 |
|
RU2356912C2 |
| FILMS PREPARED FROM ETHYLENE COPOLYMERS | 1994 |
|
RU2156779C2 |
| POLYETHYLENE AND METHODS FOR PRODUCTION THEREOF | 2011 |
|
RU2592276C2 |
| POLYMERIZATION PROCESS | 2001 |
|
RU2258712C2 |
| POLYETHYLENE COMPOSITIONS WITH IMPROVED BREAKING CHARACTERISTICS | 2004 |
|
RU2349613C2 |
| DUAL METALLOCENE CATALYST FOR PRODUCING FILM RESINS WITH GOOD MACHINE DIRECTION (MD) ELMENDORF TEAR STRENGTH | 2005 |
|
RU2382793C2 |
| POLYMER BLENDS AND ARTICLES MADE THEREFROM | 2013 |
|
RU2656997C2 |
| METHOD FOR POLYMERIZATION | 2000 |
|
RU2270203C2 |
| POLYETHYLENE FILM HAVING IMPROVED MECHANICAL PROPERTIES AND IMPERMEABILITY, AND METHOD OF MAKING SAID FILM | 2007 |
|
RU2447096C2 |
