Resin-transfer-moldable terminal-modified imide oligomer using 2-phenyl-4,4′diaminodiphenyl ether and having excellent moldability, mixture thereof, varnish containing same, and cured resin thereof and fiber-reinforced cured resin thereof made by resin transfer molding and having excellent heat resistance

摘要

A novel resin-transfer-moldable terminal-modified imide oligomer having a residue of a tetravalent aromatic tetracarboxylic acid and represented by general formula (1), and the imide oligomer contains an oligomer where n is 0 in an amount of 10% by mole or more.; In the formula, R₁ and R₂ are a hydrogen atom or an aromatic hydrocarbon group having 6 to 10 carbon atoms, and one of R₁ and R₂ is the aromatic hydrocarbon group having 6 to 10 carbon atoms; R₃ is an aromatic organic group surrounded by four carbonyl groups in the aromatic tetracarboxylic acid, and for a formula where n is 2 or more, R_as are optionally the same as or different from each other; and n is an integer of 0 or more and 6 or less.