	US 11,708,468 B2
	Propylene terpolymer
Paola Massari, Ferrara (IT); Claudio Cavalieri, Ferrara (IT); Caroline Cathelin, Ferrara (IT); Davide Tartari, Ferrara (IT); Marco Ciarafoni, Ferrara (IT); and Roberto Pantaleoni, Ferrara (IT)
Assigned to Basell Doliolefine Italia S.r.l., Milan (IT)
Appl. No. 17/275,939
Filed by BASELL POLIOLEFINE ITALIA S.R.L., Milan (IT)
PCT Filed Sep. 4, 2019, PCT No. PCT/EP2019/073553 § 371(c)(1), (2) Date Mar. 12, 2021, PCT Pub. No. WO2020/057974, PCT Pub. Date Mar. 26, 2020.
Claims priority of application No. 18195698 (EP), filed on Sep. 20, 2018.
Prior Publication US 2022/0033596 A1, Feb. 3, 2022
Int. Cl. C08L 23/16 (2006.01); C08L 23/20 (2006.01); C08F 210/08 (2006.01); C08F 210/02 (2006.01); C08F 210/06 (2006.01); C08F 210/16 (2006.01); C08J 5/18 (2006.01); C08L 23/14 (2006.01); C08F 2/00 (2006.01)

CPC C08J 5/18 (2013.01) [C08L 23/14 (2013.01); C08F 2/001 (2013.01); C08F 210/02 (2013.01); C08F 210/06 (2013.01); C08F 210/08 (2013.01); C08F 210/16 (2013.01); C08J 2323/14 (2013.01); C08J 2423/14 (2013.01); C08L 23/16 (2013.01); C08L 23/20 (2013.01); C08L 2203/162 (2013.01); C08L 2205/025 (2013.01)]

15 Claims

1. A terpolymer composition comprising:

A) from 80 wt % to 97 wt % of a first propylene, ethylene, 1-butene terpolymer having:

i) a content of ethylene derived units ranging from 0.5 wt % to 3.2 wt %, based upon the total weight of the first terpolymer;

ii) a content of 1-butene derived units ranging from 7.2 wt % to 14.8 wt %, based upon the total weight of the first terpolymer;

iii) a xylene soluble fraction at 25° C. ranging from 7.2 wt % to 13.4 wt %, based upon the total weight of the first terpolymer;

iv) a melting point determined by differential scanning calorimetry (DSC), according to ISO 11357-3, with a heating rate of 20° C./minute ranging from 123° C. to 138° C.;

v) a content of C¹³NMR sequences EEE ranging from 0.16 mol % to 0.40 mol %; and

vi) a melt flow rate, MFR, measured according to ISO 1133 at 230° C. with a load of 2.16 kg, ranging from 1.0 g/10 min to 20.0 g/10 min; and

B) from 20 wt % to 3 wt % of a second propylene, ethylene, 1-butene terpolymer having:

i) a content of ethylene derived units ranging from 0.5 wt % to 3.2 wt %, based upon the total weight of the second terpolymer;

ii) a content of 1-butene derived units ranging from 14.4 wt % to 26.5 wt %, based upon the total weight of the second terpolymer; and

iii) a xylene soluble fraction at 25° C. ranging from 38.2 wt % to 60.2 wt %, based upon the total weight of the second terpolymer;

wherein the content of 1-butene derived units of component A) is lower than the content of 1-butene derived units of component B); and

the terpolymer composition having a melt flow rate, MFR, measured according to ISO 1133 at 230° C. with a load of 2.16 kg, ranging from 3.0 g/10 min to 20.0 g/10 min;

the sum of the amounts of A) and B) being 100 wt %.