Patent ID: 8796473
Filing Date: 2014-08-05
Classification: B32B,C07D,C08G,C08J,C08K,C08L,C09D,Y10T

Abstract:
1. A method for producing a curing agent having an acidic substituent and an unsaturated maleimido group, comprising reacting, in an organic solvent, a maleimide compound (a) having at least two N-substituted maleimido groups in a molecule thereof with an amine compound (b) having an acidic substituent represented by the following formula (I): (wherein R 1 , which is an acidic substituent, represents a hydroxyl group, a carboxyl group, or a sulfonic acid group; R 2 represents a hydrogen atom, a C1-C5 aliphatic hydrocarbon group, or a halogen atom; x is an integer from 1 to 5; y is an integer from 0 to 4; and the sum of x and y is 5), and wherein said organic solvent is selected from the group consisting of cyclohexanone, propylene glycol monomethyl ether and methyl cellosolve.