Resin composition, and use and method for preparing the same

A method for producing a resin composition comprising the step of compounding the following components:

• an epoxy resin,
• an amine-type curing agent,
• an organophosphorous compound having a structure represented by formula 1:
• wherein R1 is an aryl radical with two hydroxyl groups, and the aryl radical can be substituted by one to three lower alkyls, and
• an organic solvent;
• wherein the compounding step is performed at a temperature of 50° C. or lower, so as to inhibit reaction of said epoxy resin and said organophosphorous compound in the resin composition during compounding.

A method for producing a resin composition comprising the steps of:

• reacting an epoxy resin with an amine-type curing agent in an organic solvent at a temperature of from 80 to 140° C. to form a reaction product, whereby bringing the epoxy resin and the amine-type curing agent into a state where they are mutually compatible in the absence of a solvent;
• compounding an organophosphorous compound and said reaction product at a temperature of 50° C. or lower, so as to inhibit reaction of said reaction product and said organophosphorous compound in the resin composition during compounding;
• wherein said organophosphorous compound has a structure represented by formula 1:
• wherein R1 is an aryl radical with two hydroxyl groups, and the aryl radical can be substituted by one to three lower alkyls.