Maleimide resin mixtures, curable resin compositions and their cured products

Abstract

This invention provides a maleimide resin mixture with high elastic modulus and excellent low water absorption, a curable resin composition, and the cured product thereof. A maleimide resin mixture comprises: a maleimide resin represented by formula (1) below; a compound represented by formula (M-1) below; and one or more compounds selected from formulas (A-1), (MA-1), and (MA-2) below, wherein the total content (α) of the compounds represented by formulas (A-1), (MA-1), and (MA-2) below, divided by the content (β) of the compound represented by formula (M-1), is a value (α / β) of 0.001 to 0.3. (In equation (1), there are multiple Rs that independently represent hydrocarbon groups with 1 to 5 carbon atoms; there are multiple Xs that independently represent hydrocarbon groups with 1 to 25 carbon atoms; p is an integer from 0 to 5; q is an integer from 0 to 4; there are multiple rs that are independent integers from 0 to 3; l, m, and n are the number of repetitions, and are independent integers from 0 to 20; the average value of l (lave) is 0.05 ≤ lave ≤ 20, and the sum of the average value of m (mave) and the average value of n (nave) is 0.01 ≤ mave + nave ≤ 10; the bond order of each structure with repeating units of l, m, and n can be random or block.) (In formulas (M-1), (A-1), (MA-1), and (MA-2), there exist multiple Rs that independently represent hydrocarbon groups with 1 to 5 carbon atoms; there exist multiple Xs that independently represent hydrocarbon groups with 1 to 25 carbon atoms; there exist multiple ps that are independently 0 to 5; there exist multiple qs that are independently integers from 0 to 4; and r is an integer from 0 to 3.)

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