Curable compositions for production of reaction induced phase separated compositions with improved properties

A method of producing a dual-phase, cured composition comprising:

• a) providing a curable composition comprising a mixture of:
• i) a continuous matrix forming component comprising at least two acrylate moieties and having a molecular weight of about 500 daltons or greater,
• ii) a domain forming component having the formula:
• MA-R-Z
• wherein MA is a (meth)acrylate, R is a C1-8 alkylene, and Z is an oxirane group or an oxetane group, and
• iii) a domain forming co-component;
• b) exposing the curable composition to a first set of curing conditions to induce reaction induced phase separation to produce an intermediate cured composition having domains of a polymer of the domain forming component within a continuous matrix of a polymer of the continuous matrix forming component,
• c) exposing the intermediate cured composition to a second set of curing conditions to induce additional curing of the domains of the polymer of the domain forming component to obtain a dual-phase, cured composition.