Propylene/ethylene/1-butene terpolymer compositions with multimodal base polymer

Abstract

A propylene/ethylene/1-butene terpolymer composition, includes a) a multimodal base polymer in an amount from 95 to 99.9 wt.-% relative to the total weight of the propylene/ethylene/1-butene terpolymer composition, with the following properties: i. a melt flow rate in the range from 3 to 12 g/10 min, as determined according to ISO 1133 at 230° C. at a load of 2.16 kg; ii. a content of 2,1-regiodefects in the range from 0.1 to 1.0 mol-%, as determined according to quantitative 13C-NMR spectroscopy analysis; iii. an ethylene content in the range from 1.0 to 4.0 mol-%, as determined according to 13C-NMR spectroscopy; and iv. a 1-butene content in the range from 3.0 to 10.0 mol-%, as determined according to 13C-NMR spectroscopy; v. a xylene cold soluble content in the range from 0 to 3.0 wt.-%, as determined according to ISO 16152. The multimodal base polymer includes a1) a first terpolymer fraction, in an amount of from 50 wt.-% to 80 wt.-% relative to the total weight of the multimodal base polymer, with a melt flow rate in the range from 1 to 10 g/10 min, as determined according to ISO 1133 at 230° C. at a load of 2.16 kg; and a2) a second terpolymer fraction, in an amount of from 20 wt.-% to 50 wt.-% relative to the total weight of the multimodal base polymer, with a melt flow rate in the range from 5 to 30 g/10 min, as determined according to ISO 1133 at 230° C. at a load of 2.16 kg; b) additives in an amount of from 0.1 to 5 wt.-% relative to the total weight of the propylene/ethylene/1-butene terpolymer composition selected from the group consisting only of antioxidants, anti-blocking agents, UV-stabilizers, anti-scratch agents, mold release agents, lubricants, anti-static agents, pigments, and mixtures thereof. The propylene/ethylene/1-butene terpolymer is essentially free of acid scavengers.

Dependencies are inferred from the claim text.