Curable cross-linkable composition for use as lost circulation material

A curable cross-linkable composition useful as a drilling well lost circulation material comprising:

• i from 40 to 90 weight percent of an organic compound capable of free radical (co)polymerization described by the following formula:
• wherein:
• x is an integer from 2 to 8;
• L is a moiety comprising an aromatic or an aliphatic group derived from a diisocyanate wherein one of the isocyanate groups reacts with a reactive group on Fp1 to form a first bond and the second isocyanate group reacts with a hydroxyl group on Q1 to form a urethane link;
• Fp1 is a moiety derived from an organic compound with a reactive group and one or more free radical polymerizable group wherein the reactive group reacts with a first isocyanate group on L to form a first bond;
• and
• Q1 is a moiety derived from a substituted or unsubstituted organic polyol comprising two or more hydroxyl groups wherein the moiety comprises an alkyl group, alkylene group, alkenyl group, cycloalkyl group, cycloalkylene group, aryl group, aralkyl group, alkaryl group, poly(oxyalkylene) group, poly(carboalkoxyalkylene) group, substituted heterocyclic group, or unsubstituted heterocyclic group wherein Q1 has a molecular weight of from 400 to 4,000 and each hydroxyl group reacts with am isocyanate on an L to form a urethane link;
• and
• ii from 10 to 60 weight percent of a reactive diluent described by the following formula:
• wherein:
• y is an integer from 2 to 8;
• Fp2 is a moiety derived from an organic compound with a reactive group which reacts with a hydroxyl group on Q2 to form a bond, Fp2 comprises one or more free radical polymerizable group, and Fp2 may be the same or different than Fp1;
• and
• Q2 is a moiety derived from a substituted or unsubstituted organic polyol comprising two or more hydroxyl groups wherein the moiety comprises an alkyl group, alkylene group, alkenyl group, cycloalkyl group, cycloalkylene group, aryl group, aralkyl group, alkaryl group, poly(oxyalkylene) group, poly(carboalkoxyalkylene) group, substituted heterocyclic group, or unsubstituted heterocyclic group wherein Q2 has a molecular weight of from 60 to 500 each hydroxyl group reacts with the reactive group on an Fp2 to form a bond, Q2 may the same or different than Q1
• wherein weight percent is based on the total weight of the curable cross-linkable composition.