Patent ID: 11879039
Assignee: HARBIN ENGINEERING UNIVERSITY
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 3:
4. The preparation method for the thermoplastic multi-hybrid polyimide films according to claim 1, wherein the aromatic diisocyanate in step S1 comprises one or a mixture of 2,4′-diphenylmethane diisocyanate, 4,4′-diphenylmethane diisocyanate, 2,2′-methylene diphenyl diisocyanate, toluene-2,4-diisocyanate, toluene-2,5-diisocyanate, toluene-2,6-diisocyanate, toluene-3,4-diisocyanate, toluene-3,5-diisocyanate, 3,3′-dimethylbiphenyl-4,4′-diisocyanate, m-phenylene diisocyanate, p-phenylene diisocyanate, o-phenylene dimethyl diisocyanate, naphthalene diisocyanate, benzenedimethylene diisocyanate, and tetramethylbenzenedimethylene diisocyanate.