US 12,466,924 B2
Copolymerization process for forming a polyethylene copolymer nanocomposite
Mamdouh A. Al-Harthi, Dhahran (SA); and Muhammad Daud, Dhahran (SA)
Assigned to KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed by KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Dhahran (SA)
Filed on Jul. 10, 2023, as Appl. No. 18/349,447.
Application 18/349,447 is a continuation of application No. 16/190,211, filed on Nov. 14, 2018, granted, now 11,753,509.
Claims priority of provisional application 62/643,529, filed on Mar. 15, 2018.
Prior Publication US 2023/0357517 A1, Nov. 9, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. C08J 5/00 (2006.01)
CPC C08J 5/005 (2013.01) [C08J 2323/06 (2013.01)] 19 Claims
 
1. A copolymerization process for producing a polyethylene copolymer nanocomposite, comprising:
forming a polymerization mixture comprising a graphene-layered double hydroxide nanocomposite, a metallocene catalyst, an alkylaluminoxane co-catalyst, a comonomer selected from the group consisting of 1-butene, 1-hexene, and 1-octene, and an organic solvent;
adding ethylene into the polymerization mixture;
polymerizing the ethylene in the polymerization mixture to form the polyethylene copolymer nanocomposite;
wherein the polyethylene copolymer nanocomposite comprises the graphene-layered double hydroxide nanocomposite dispersed in a matrix of the polyethylene copolymer;
wherein the graphene-layered double hydroxide nanocomposite comprises a layered double hydroxide and 1 to 7 wt. % graphene relative to a total weight of the graphene-layered double hydroxide nanocomposite; and
wherein the layered double hydroxide has a lamellar morphology of adhered hexagonal nanoplatelets having a particle size of 40 to 100 nm.