US 11,988,319 B2
Propylene-based terpolymer composition for pipes
Henrica Norberta Alberta Maria Steenbakkers-Menting, Susteren (NL); Patrick Elisabeth Luc Voets, Born (NL); Ralf Kleppinger, Selfkant (DE); Désirée Marie Louise Seegers, Maastricht (NL); and Harm Caelers, Koningslust (NL)
Assigned to SABIC GLOBAL TECHNOLOGIES B.V., Bergen Op Zoom (NL)
Appl. No. 17/795,662
Filed by SABIC GLOBAL TECHNOLOGIES B.V., Bergen Op Zoom (NL)
PCT Filed Jan. 25, 2021, PCT No. PCT/EP2021/051632
§ 371(c)(1), (2) Date Jul. 27, 2022,
PCT Pub. No. WO2021/151840, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. 20153923 (EP), filed on Jan. 27, 2020.
Prior Publication US 2023/0087683 A1, Mar. 23, 2023
Int. Cl. F16L 9/12 (2006.01); C08F 210/02 (2006.01); C08F 210/06 (2006.01); C08F 210/14 (2006.01); C08K 3/013 (2018.01); C08K 5/098 (2006.01)
CPC F16L 9/12 (2013.01) [C08F 210/02 (2013.01); C08F 210/06 (2013.01); C08F 210/14 (2013.01); C08K 3/013 (2018.01); C08K 5/098 (2013.01); C08F 2500/36 (2021.01)] 20 Claims
 
1. A pipe comprising a polypropylene composition (P) comprising a terpolymer composition (A), a nucleating agent (B) and optionally a composition comprising pigment (C),
wherein the terpolymer composition (A) comprises at least one terpolymer prepared from propylene, ethylene and 1-hexene,
wherein the nucleating agent (B) is a nucleating agent comprising a metal salt of hexahydrophthalic acid represented by formula (I)

OG Complex Work Unit Chemistry
wherein M1 and M2 are the same or different, and may be combined into one cation, and are selected from at least one metal cation of calcium, strontium, lithium, and monobasic aluminum; and wherein R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 are either the same or different and are individually selected from the group consisting of hydrogen, C1-C9 alkyl, hydroxy, C1-C9alkoxy, C1-C9 alkyleneoxy, amine, and C1-C9 alkylamine, halogens, and phenyl;
wherein the polypropylene composition (P) has a melt flow rate in a range from 0.10 to 0.50 dg/min as determined by ISO1133-1:2011 at 230° C. and 2.16 kg;
wherein an amount of ethylene derived units in the polypropylene composition (P) is from 1.7 to 3.0 wt %, and an amount of 1-hexene derived units in the polypropylene composition (P) is in a range from 1.7 to 4.0 wt %, and
TC2>TC6−0.20,
wherein TC2 stands for a total amount of ethylene-derived units in the polypropylene composition in wt % and wherein TC6 stands for a total amount of 1-hexene derived units in the polypropylene composition in wt %.