US 12,234,328 B1
Polyethylene composition for injection molding
Olivier Lhost, Seneffe (BE); Yves Trolez, Seneffe (BE); Pascal Navez, Seneffe (BE); Philippe Cassagnau, Villeurbanne (FR); Karim Delage, Villeurbanne (FR); and Mohammad Abou-Taha, Villeurbanne (FR)
Assigned to TOTALENERGIES ONETECH, Courbevoie (FR); CENTRE NATIONAL DE LARECHERCHE SCIENTIFIQUE(CNRS), Paris (FR); UNIVERSITÉ CLAUDE BERNARDLYON 1 (UCBL), Villeurbanne (FR); UNIVERSITÉ JEAN MONNETSAINT-ETIENNE, Saint-Etienne (FR); and INSTITUT NATIONAL DESSCIENCES APPLIQUÉES DE LYON(INSA LYON), Villeurbanne (FR)
Appl. No. 18/837,103
Filed by TOTALENERGIES ONETECH, Courbevoie (FR); CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS), Paris (FR); UNIVERSITÉ CLAUDE BERNARD LYON 1 (UCBL), Villeurbanne (FR); UNIVERSITÉ JEAN MONNET SAINT-ETIENNE, Saint-Etienne (FR); and INSTITUT NATIONAL DES SCIENCES APPLIQUÉES DE LYON (INSA LYON), Villeurbanne (FR)
PCT Filed Feb. 1, 2023, PCT No. PCT/EP2023/052401
§ 371(c)(1), (2) Date Aug. 8, 2024,
PCT Pub. No. WO2023/151996, PCT Pub. Date Aug. 17, 2023.
Claims priority of application No. 22315030 (EP), filed on Feb. 10, 2022.
Int. Cl. C08J 11/06 (2006.01); B29B 7/48 (2006.01); B29B 7/82 (2006.01); B29K 23/00 (2006.01); B29K 105/00 (2006.01); B29K 105/26 (2006.01); B29L 31/00 (2006.01)
CPC C08J 11/06 (2013.01) [B29B 7/48 (2013.01); B29B 7/823 (2013.01); B29K 2023/065 (2013.01); B29K 2105/0094 (2013.01); B29K 2105/26 (2013.01); B29K 2995/0012 (2013.01); B29K 2995/0063 (2013.01); B29L 2031/7158 (2013.01); C08J 2323/06 (2013.01)] 20 Claims
 
1. Polyethylene composition comprising at least 50 wt. % of polyethylene based on the total weight of the polyethylene composition, characterized in that the polyethylene composition has:
a density of at least 0.910 g/cm3 as determined according to ISO 1183-1:2012 at 23° C.;
a melt index MI2 ranging from 3.0 to 60.0 g/10 min as determined according to ISO 1133-2011 at 190° C. under a load of 2.16 kg;
an unsaturation index higher than 2,000 wherein the unsaturation index is the product of the Mn in Dalton and the vinyl unsaturation units per 1,000 carbon atoms as determined by ASTM D6248-98:2004;
a complex viscosity at 0.1 rad/sec at 190° C. ranging from 200 to 20,000 Pa·s s determined according to the method defined in the description; and
a ratio of complex viscosity at a frequency of 0.01 rad/sec to the complex viscosity at a frequency of 100 rad/sec of at most 8.0, said ratio being measured at 190° C.