With maleimide groups functionalized aromatic polyamideimides, process for their preparation and their use for preparing cross-linked polymers.

摘要

New aromatic polyamideimides whose chains contain optionally substituted end groups of maleimido type.
<??>More precisely, these polymers correspond to the formula:
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in which: D denotes a valency bond, an atom or a divalent group; B denotes a trivalent aromatic radical containing at least 6 carbon atoms; m is at least equal to 1; and X denotes the radical of formula:
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in which R1 and R2 = H or CH3, R3 = CH3, n = 0, 1, 2 or 3 and E = a valency bond or -CH2-. These polymers are obtained by direct reaction of an aromatic diisocyanate, a tricarboxylic acid monoanhydride and a carboxylic monoacid substituted by a maleimido group (itself optionally substituted).
<??>These polyamideimides can be employed especially for the production of coating films, adhesive substances and moulded articles and can be crosslinked when heated.