Patent ID: 11912868
Assignee: LG CHEM, LTD.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 8:
9. A method of preparing a conductive concentrated resin composition, the method comprising:
kneading and extruding (a) 100 parts by weight of a base resin comprising 50% to 95% by weight of a first polyamide resin, 2.5% to 20% by weight of a first polar polymer, and 2.5% to 30% by weight of a first non-polar polymer; (b) 10 parts to 40 parts by weight of a carbon nanofibril; (c) 0.5 parts to 5 parts by weight of a carbon nanoplate; and (d) 0.5 parts to 4 parts by weight of nanoclay using an extruder equipped with 9 or more kneading blocks,
wherein the first polyamide resin is one or more selected from the group consisting of polyamide 6, polyamide 66, polyamide 46, polyamide 11, polyamide 12, polyamide 610, polyamide 612, polyamide 6/66, polyamide 6/612, polyamide MXD6, polyamide 6/MXD6, polyamide 66/MXD6, polyamide 6T, polyamide 6I, polyamide 6/6T, polyamide 6/6I, polyamide 66/6T, polyamide 66/6I, polyamide 6/6T/6I, polyamide 66/6T/6I, polyamide 9T, polyamide 9I, polyamide 6/9T, polyamide 6/9I, polyamide 66/9T, polyamide 6/12/9T, polyamide 66/12/9T, polyamide 6/12/9I, and polyamide 66/12/6I,
wherein the first polar polymer is an ethylene-α-olefin copolymer modified with at least one of α,β-unsaturated dicarboxylic acid and anhydrides thereof, wherein the α-olefin included in the first polar polymer has 3 to 10 carbon atoms, wherein the first polar polymer is prepared by adding the at least one of α,β-unsaturated dicarboxylic acid and anhydrides thereof to an unmodified ethylene-α-olefin copolymer and performing a graft polymerization, or prepared by adding the at least one of α,β-unsaturated dicarboxylic acid and anhydrides thereof as a comonomer to an unmodified ethylene-α-olefin copolymer and performing a copolymerization, and
wherein the first non-polar polymer is an ethylene-α-olefin copolymer having no polar group, wherein the α-olefin included in the first non-polar polymer has 3 to 10 carbon atoms.