Patent ID: 11939439
Assignee: LG ELECTRONICS INC.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  H | IPC C

Claim 10:
11. A method for producing a composite polyimide film, the method comprising:
treating surfaces of inorganic particles;
dispersing the inorganic particles in a solvent;
polymerizing a fluorinated polymer coating onto the inorganic particles to produce filler particles;
dispersing the filler particles in a polyamic acid solvent to produce a polyamic acid solution; and
producing the composite polyimide film using the polyamic acid solution,
wherein the inorganic particle includes a silica (SiO2) particle,
wherein the silica particle includes a hollow silica particle or a mesoporous silica particle, and
wherein a thickness of the fluorine polymer coating is in a range of 10 to 60 nm.