Propylene/1-hexene copolymer composition with low sealing temperature

摘要

Propylene copolymer composition (P) comprising (a) a propylene copolymer (A) having a comonomer content of at least 1.0 wt.-%, the comomers are C5 to C12 a-olefins, and (b) a propylene copolymer (B) having a comonomer content of 4.0 to 20.0 wt.-%, the comomers are C5 to C12 a-olefins, wherein further (i) the comonomer content in the propylene copolymer (A) is lower compared to the comonomer content in the propylene copolymer (B), (ii) the propylene copolymer composition (P) has a comonomer content of 2.0 to 10.0 wt.-%, the comomers are C5 to C12 a-olefins, (iii) the weight ratio of the propylene copolymer (A) to the propylene copolymer (B) is the range of 30/70 to 80/20.

主权项

1. Propylene copolymer composition (P) comprising:
(a) a propylene copolymer (A) having a comonomer content of at least 1.0 wt %, the comonomers are C5 to C12 α-olefins, and (b) a propylene copolymer (B) having a comonomer content of 3.5 to 6.5 wt %, the comonomers are C5 to C12 α-olefins, wherein further:
(i) the comonomer content in the propylene copolymer (A) is lower compared to the comonomer content in the propylene copolymer (B),(ii) the propylene copolymer composition (P) has a comonomer content of 2.0 to 10.0 wt. %, the comonomers are C5 to C12 α-olefins,(iii) the weight ratio of the propylene copolymer (A) to the propylene copolymer (B) is in the range of 20/80 to 80/20, and(iv) the propylene copolymer composition (P) has crystallization temperature (Tc) measured according to ISO 11357-3 in the range of 88 to 110° C.