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, Ras are optionally the same as or different from each other; and n is an integer of 0 or more and 6 or less.

主权项

1. A resin-transfer-moldable terminal-modified imide oligomer mixture comprising:
a resin-transfer-moldable terminal-modified imide oligomer having a residue of a tetravalent aromatic tetracarboxylic acid and represented by General Formula (1), the resin-transfer-moldable terminal-modified imide oligomer containing an oligomer where n is 0 in an amount of 10% by mol or more and in amount of 50% by mol or less, and a terminal-modified imide oligomer represented by General Formula (4) and having a minimum melt viscosity of 1 Pa·sec or less determined with a rheometer: where R1 and R2 are a hydrogen atom or an aromatic hydrocarbon group having 6 to 10 carbon atoms, and at least 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, n is an integer of 1 or more and 6 or less, and when n is 2 or more, R3s are optionally the same as or different from each other; where R4 is an aromatic organic group surrounded by two amino groups in an aromatic diamine.