	US 12,338,302 B2
	Propylene based copolymer for containers
Gianpiero Ferraro, Ferrara (IT); Marco Ciarafoni, Ferrara (IT); Claudio Cavalieri, Ferrara (IT); Caroline Cathelin, Ferrara (IT); and Giansiro Prini, Ferrara (IT)
Assigned to Basell Poliolefine Italia S.r.l., Milan (IT)
Appl. No. 17/908,333
Filed by BASELL POLIOLEFINE ITALIA S.R.L., Milan (IT)
PCT Filed Feb. 23, 2021, PCT No. PCT/EP2021/054392 § 371(c)(1), (2) Date Aug. 31, 2022, PCT Pub. No. WO2021/175649, PCT Pub. Date Sep. 10, 2021.
Claims priority of application No. 20160948 (EP), filed on Mar. 4, 2020.
Prior Publication US 2023/0095189 A1, Mar. 30, 2023
Int. Cl. C08F 210/06 (2006.01); B29C 45/00 (2006.01); B29K 23/00 (2006.01); B29L 31/00 (2006.01)

CPC C08F 210/06 (2013.01) [B29C 45/0001 (2013.01); B29K 2023/14 (2013.01); B29L 2031/712 (2013.01)]

10 Claims

1. A propylene/1-hexene copolymer having

i) the content of 1-hexene derived units, measured by ¹³C-NMR, ranging from 1.5 wt % to 2.5 wt % and the content of propylene derived units ranging from 97.5 to 98.5 wt. %;

ii) a melting temperature, measured by DSC, ranging from 148 to 153° C.;

iii) an amount of fraction insoluble in xylene at 25° C. higher than 97.0%;

iv) a melt flow rate (MFR), measured according to ISO 1133, 230° C., 2.16 kg, ranging from 35 to 65 g/10 min.; and

v) a crystallization temperature higher than 119° C., wherein the difference between the melting temperature and the crystallization temperature is less than 30° C.