Polymers prepared from imide containing dianhydrides

Details Polymers prepared from imide containing dianhydrides Polymers prepared from imide containing dianhydrides

1973-11-05

1976-05-04

Lee, Lester L.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 302, 260 324, 260306R, 260 306SB, 260 326N, 260 328SB, 260 465E, 260 65, 260 78TF, 260 78A, 260326C, 428458, 428474, C08G 7310

Patent

active

039547108

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:
patent: 3485796 (1969-12-01), Naselow
patent: 3505295 (1970-04-01), Grunsteidl et al.
patent: 3511807 (1970-05-01), Lovejoy
patent: 3716519 (1973-02-01), Yoda et al.
patent: 3736290 (1973-05-01), Fessler

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