Polyetheramide-imide polymer composition
AssigneeHitachi Chemical Company, Ltd.
InventorsHiroshi Nishizawa, Touichi Sakata, Yoshiyuki Mukoyama
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Abstract
A polyetheramide-imide polymer composition comprising an aromatic polyetheramide-imide polymer obtained by reacting trimellitic acid or a derivative thereof with a special aromatic diamine having ether linkages, and an ether compound and/or an alicyclic ketone compound as a solvent is excellent in film-forming properties at low temperatures.
Claims5
A polyetheramide-imide polymer composition comprising an aromatic polyetheramide-imide polymer dissolved in a solvent selected from the group consisting of at least one ether compound, an alicyclic ketone compound and a mixture thereof, said aromatic polyetheramide-imide polymer having a reduced viscosity of 0.30 dl/g or more measured at 30.degree. C. and being obtained by reacting trimellitic acid or a reactive acid derivative thereof with an aromatic diamine having ether linkages and represented by the formula:
- ##STR7## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are independently a hydrogen atom, a lower alkyl group, a lower alkoxy group, a chlorine atom or a bromine atom;
- and R.sub.5 and R.sub.6 are independently a hydrogen atom, a methyl group, an ethyl group, a propyl group, a trifluoromethyl group or a trichloromethyl group.
Dependencies are inferred from the claim text.