polyamide acid

synonym: polyamic acid
https://doi.org/10.1351/goldbook.15268
Polyamide containing pendent carboxy groups:
polyamide acid
where \(\ce{R}\) is a constitutional unit with a connectivity three or higher.
polyamide acid
Note: A polyamide acid is mostly prepared as a processable precursor giving a polyimide upon thermal curing. The polyamide acid prepared from benzene-1,2:4,5-tetracarboxylic dianhydride (formerly pyromellitic anhydride) and hexane-1,6-diamine (formerly hexamethylenediamine) is an example of such a precursor:
polyamide acid
Source:
PAC, 2009, 81, 1131. (Glossary of class names of polymers based on chemical structure and molecular architecture (IUPAC Recommendations 2009)) on page 1148 [Terms] [Paper]