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US 5,489,644 AGranted
Solutions of polyimide-forming coating materials
AssigneeBASF Lacke + Farben, AG
InventorsRainer Blum, Gerhard Hoffmann
Life of this patent
Estimating the term…
Abstract
Solutions of polyimide-forming substances contain A) aromatic or partly aromatic diamines and B) tetraesters of imide-forming aromatic or partly aromatic tetracarboxylic acids or mixtures of these tetraesters with the corresponding tri-, di- and/or monoesters. These solutions are suitable for the production of coatings.
Claims4
A solution of a polyimide-forming composition, consisting essentially of
- A) an aromatic or partly aromatic diamine and
- B) a tetraester of an imide-forming aromatic or partly aromatic tetracarboxylic acid or a mixture of this tetraester with the corresponding tri-, di- or monoester.
Dependencies are inferred from the claim text.