N,N'bis(phthalic anhydride) diimides

Details N,N'bis(phthalic anhydride) diimides N,N'bis(phthalic anhydride) diimides

1973-11-05

1976-06-08

Rollins, Alton D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260 326NA, 260281D, 260281F, 260250BC, 260326N, 260326S, 26032626, 428435, C07D40514, C07D47106, C07D48704, C07D48714

Patent

active

039622789

ABSTRACT:
Thermoplastic imide polymers prepared from a dianhydride monomer containing imide linkages and at least two cyclic anhydride groups and an aromatic diamine such as 4,4'-diaminodiphenyl ether. Comonomers such as 3,4:3',4'-benzophenonecarboxylic dianhydride may be added. Preferably said dianhydride monomer containing imide linkages is made by reacting 4-aminophthalic acid with a dianhydride containing at least two cyclic anhydride groups, preferably in the ratio of about 2:1. Preferably said imide polymer is made by first forming a solution containing the diamine and adding the dianhydride monomer containing imide linkages while the temperature of the solution is maintained between 50.degree. and 120.degree.C. and most preferably at 110.degree.C.

REFERENCES:
Mifune et al. CA 68, 105,686k (1968).

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