N-substituted polyamide-imides

Details N-substituted polyamide-imides N-substituted polyamide-imides

1993-02-04

1994-03-22

Richter, Johann

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548462, 548423, 540487, 540493, C07D20948, C07D22310, C07F 702

Patent

active

052966100

ABSTRACT:
An N-substituted polyamideimide essentially composed of identical or different repeating units of the formula I ##STR1## where R.sup.1 is one of the following tetravalent aromatic radicals ##STR2## and X is a bond or one of the following linkers ##STR3## where R.sup.2 and R.sup.4 are each, independently of one another, one of the following divalent aromatic radicals ##STR4## and where X has the abovementioned meanings and where R.sup.3 is hydrogen or a monovalent radical such as C.sub.1 -C.sub.6 -alkyl or phenyl, and the C.sub.1 -C.sub.6 -alkyl-, C.sub.1 -C.sub.6 -alkoxy-, aryl- or halogen-substituted derivatives thereof, and precursors (monomers) therefor, are described.

REFERENCES:
patent: 4871863 (1989-10-01), Khuddus

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