Publication number: 20090197019
Abstract: A negative birefringence film prepared from a poly(aryletherimide) which is the reaction product of a dianhydride and a diamine, where the dianhydride is BisADA, ODPA, BPEDA, BPQDA, BPDA, or 6FDA, alone or a mixture with one or more of: BPDA, 6FDA, BisADA, Bis-AF-DA, BPQDA, BPEDA, and ODPA; and where the diamine is 4,4?-diaminophenyl ether, 2-trifluoromethyl-4,4?-diaminophenyl ether, 2-trifluoromethyl-2?-methyl-4,4?-diaminophenyl ether, 1,4-bis(4-aminophenoxy)benzene, 4,4?-bis(4-aminophenoxy)biphenyl, 4,4?-bis(3-aminophenoxy)biphenyl, 4,4?-bis(4-aminophenoxy)terphenyl, 4,4?-bis(3-aminophenoxy)terphenyl, 2,2-bis[4-(4-aminophenoxy)phenyl]propane, 2,2-bis[4-(4-aminophenoxy)phenyl]1,1,1,3,3,3-hexafluoropropane, 1,4-bis(4-amino-2-trifluoromethylphenoxy)benzene, 2,2?-bis(trifluoromethyl)-4,4?-diaminophenyl ether (6FODA), 4,4?-bis(4-amino-2-trifluoromethylphenoxy)biphenyl (6FOBDA), 4,4?-bis(4-amino-2-trifluoromethylphenoxy)-3,3?,5,5?-tetramethylbiphenyl, 4,4?-bis(4-amino-2-trifluoromethylphenoxy)-3,3?,5,5?-tetra(ter
Type:
Application
Filed:
October 4, 2007
Publication date:
August 6, 2009
Applicant:
THE UNIVERSITY OF AKRON
Inventors:
Frank W. Harris, Limin Sun, Dong Zhang, Stephen Z. D. Cheng