US 11,859,036 B2
Reactor for treating polystyrene material
Domenic Di Mondo, Brampton (CA); and Benjamin Scott, Guelph (CA)
Assigned to GreenMantra Recycling Technologies Ltd., Brantford (CA)
Filed by GreenMantra Recycling Technologies Ltd., Brantford (CA)
Filed on Jun. 30, 2021, as Appl. No. 17/363,009.
Application 17/363,009 is a continuation of application No. 16/293,792, filed on Mar. 6, 2019, granted, now 11,072,676.
Application 16/293,792 is a continuation of application No. PCT/CA2017/051166, filed on Sep. 29, 2017.
Claims priority of provisional application 62/401,830, filed on Sep. 29, 2016.
Prior Publication US 2021/0324127 A1, Oct. 21, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. C08F 257/02 (2006.01); C08J 11/16 (2006.01); C08F 8/50 (2006.01); B09B 3/40 (2022.01)
CPC C08F 257/02 (2013.01) [B09B 3/40 (2022.01); C08F 8/50 (2013.01); C08J 11/16 (2013.01); C08J 2325/06 (2013.01); C08L 2207/20 (2013.01); Y02W 30/62 (2015.05)] 20 Claims
OG exemplary drawing
 
1. A method for continuously treating polystyrene material comprising:
selecting a solid polystyrene material;
heating said solid polystyrene material in an extruder to create a molten polystyrene material;
placing said molten polystyrene material through a chemical depolymerization process in a first reactor to create a depolymerized polystyrene material; and
grafting a copolymer/monomer onto said depolymerized polystyrene material to create a grafted product,
wherein said copolymer/monomer comprises a functional group.