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US 4,927,899 AGranted
Alkenyloxylated aromatic polyamidoimides
AssigneeRhone-Poulenc Chimie
InventorsPhilippe Michaud, Yves Camberlin
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Abstract
Novel curable aromatic polyamidoimides having alkenyloxy end groups, well adopted as coating solutions or for the production of solid shaped articles, are prepared by the direct interreaction among (i) an aromatic diisocyanate, (ii) a monoanhydride of a tricarboxylic acid and (iii) an alkenyloxylated monocarboxylic acid, and have the following structural formula (I): ##STR1##
Claims11
A linear aromatic polyamidoimide having alkenyloxy end groups and having the following general formula:
- ##STR10## in which each of the symbols D, which are identical, is a single valence bond or one of the groups:
- ##STR11## the symbol B is a trivalent radical comprising an aromatic radical containing at least 6 carbon atoms, substituted or unsubstituted, or of two such radicals linked together by a single valence bond or one of the groups:
- ##STR12## the symbol m is the average number of recurring structural units and is at least equal to 1;
- and each of the symbols X, which are identical, is a radical of the formula:
- ##STR13## in which R is a hydrogen atom or a methyl radical;
- the (meth)allyloxy radical is in an ortho, meta or para position relative to the carbon atom of the benzene ring which is linked to the CONH group;
- R' is a methyl radical;
- and n is an integer equal to 0, 1, 2 or 3.
5 more elements
Dependencies are inferred from the claim text.