| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to composition of propylene copolymer, intended for obtaining products, which are subjected to heat sealing, its obtaining and application. Composition contains propylene copolymer (A) with content of comonomer at least 1.0 wt %, comonomers represent C-C?-olefins and copolymer of propylene (B) with content of comonomer in the range from 4.0 to 20.0 wt %, comonomers represent C-C?-olefins. Composition of propylene copolymer (P) has content of comonomer in the range from 3.5 to 6.5 wt %, with content of comonomer in propylene compolymer (A) being lower in comparison with content of comonomer in propylene copolymer (B) and weight ratio of propylene copolymer (A) to propylene copolymer (B) in the range from 20/80 to 80/20.EFFECT: composition by invention is characterised by low heat sealing initiation temperature (SIT) and good mechanical properties, such as impact resistance.15 cl, 2 tbl, 6 ex |
