FIELD: chemistry.
SUBSTANCE: invention relates to propylene compositions for producing packing materials and films. Disclosed is a polypropylene composition comprising a mixture (A) of 50–90 wt. % of a random copolymer of propylene and ethylene, having an ethylene content of 2–6 wt. %, and (B) 10–50 wt. % of a random copolymer of propylene and hexene, having a hexene content of 3–7 wt. %, where the melting point of copolymer (B) is less than the melting point of copolymer (A). Invention also discloses a method of producing said composition, use of the disclosed composition for producing articles selected from packing materials and films and corresponding articles.
EFFECT: technical result is obtaining material having improved balance between low temperature of beginning of welding, low total migration, good optical characteristics and sufficient thermal stability.
14 cl, 5 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| POLYPROPYLENE COMPOSITION | 2018 |
|
RU2744581C1 |
| PROPYLENE COMPOSITION FOR FOAMING WITH IMPROVED MECHANICAL PROPERTIES | 2020 |
|
RU2806522C1 |
| COMPOSITION OF A PROPYLENE COPOLYMER WITH EXCELLENT OPTICAL AND MECHANICAL PROPERTIES | 2019 |
|
RU2775266C1 |
| NOVEL METALLOCENE COMPOUND, CATALYTIC COMPOSITION CONTAINING THEREOF AND METHOD OF OBTAINING OLIFIN-BASED POLYMERS WITH ITS APPLICATION | 2012 |
|
RU2529020C2 |
| FIBRE-REINFORCED POLYPROPYLENE COMPOSITION | 2022 |
|
RU2824348C1 |
| PROPYLENE-BASED POLYMER COMPOSITION | 2018 |
|
RU2735731C1 |
| METALLOCENES, METHOD FOR COPOLYMERIZATION OF PROPYLENE AND ETHYLENE, STATIC COPOLYMERS OF PROPYLENE WITH ETHYLENE | 2000 |
|
RU2276671C2 |
| IMPROVED CATALYST SYSTEM FOR PRODUCING POLYETHYLENE COPOLYMERS IN HIGH-TEMPERATURE SOLUTION POLYMERISATION METHOD | 2015 |
|
RU2693453C2 |
| POLYPROPYLENE COMPOSITION WITH LOW SHRINKAGE IN WIDE RANGE OF APPLICATION TEMPERATURES | 2018 |
|
RU2739399C1 |
| HETEROPHASE POLYPROPYLENE WITH A STATISTICAL COPOLYMER OF PROPYLENE AND HEXENE AS A MATRIX | 2019 |
|
RU2759852C1 |
