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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Application filed by Matsushita Electric Works LtdfiledCriticalMatsushita Electric Works Ltd
Priority to JP15709287ApriorityCriticalpatent/JPS641727A/en
Publication of JPH011727ApublicationCriticalpatent/JPH011727A/en
Publication of JPS641727ApublicationCriticalpatent/JPS641727A/en
PURPOSE: To obtain an aromatic polyester polymer, having a specific oxyphenoxybenzoyl structure as recurring structural units with excellent high- temperature characteristics and heat resistance, meltable, moldable by an ordinary melt molding method and useful as molded products, etc.
CONSTITUTION: The aimed polymer, obtained by polycondensing a carboxylic acid compound expressed by formula I (Ra is H or carbonyl; Ra' is H, alkyl or aryl) or formula II (Rb and Rb' are H, alkyl or aryl; X is halogen; n is 2 or 4) with a phenolic compound expressed by formula III (Rc and Rc' are H or carbonyl) or formula IV (Rd and Rd' are H or carbonyl; R1 and R2 are H or alkyl) at 250W300°C in nitrogen atmosphere and consisting of respective recurring structural units in the formed polymer at ratios of 35W90mol.% units expressed by formula V, 5W30mol.% units expressed by formula VI and 5W30mol.% units expressed by formula VII and/or formula VIII.
Straight-chain aromatic poly(amide-imide)s containing, as functional groups at the end of chains, groups comprising a residue having a latent maleimide function, a process for their preparation and their use, in particular for preparing crosslinked polymers