Curable composition and abrasive articles made using the same

A curable composition comprising

• at least one cyclic olefin capable of undergoing ring opening metathesis polymerization;
• at least one ring opening metathesis polymerization catalyst or precursor catalyst thereof;
• abrasive particles having surface hydroxyl groups;
• and
• a difunctional coupling agent represented by the structure
• Z-X-Z
• wherein each Z independently represents a group that is chemically reactive with at least one of the surface hydroxyl groups of one of the abrasive particles thereby forming at least one covalent bond,
• wherein X represents a divalent organic linking group have a number average molecular weight of 500 to 10000 grams per mole, and
• wherein the difunctional coupling agent comprises an isocyanate-terminated polyurethane prepolymer of 4,4′-diphenylmethane and a polyalkylene glycol.

A curable composition comprising

• at least one cyclic olefin capable of undergoing ring opening metathesis polymerization;
• at least one ring opening metathesis polymerization catalyst or precursor catalyst thereof;
• abrasive particles having surface hydroxyl groups;
• and
• a difunctional coupling agent represented by the structure
• Z-X-Z
• wherein each Z independently represents a group that is chemically reactive with at least one of the surface hydroxyl groups of one of the abrasive particles thereby forming at least one covalent bond,
• wherein X represents a divalent organic linking group have a number average molecular weight of 500 to 10000 grams per mole, and
• wherein the difunctional coupling agent comprises a diphenylmethane diisocyanate-terminated polyether prepolymer based on polytetramethylene ether glycol.

An abrasive article comprising:

• a backing having opposed major surfaces;
• a make layer disposed on one of the major surfaces of the backing, wherein the make layer comprises an at least partially cured reaction product of a curable composition comprising:
• at least one cyclic olefin capable of undergoing ring opening metathesis polymerization;
• at least one ring opening metathesis polymerization catalyst;
• a difunctional coupling agent represented by the structure
• Z-X-Z
• wherein each Z independently represents a group that is chemically reactive with at least one of the surface hydroxyl groups of one of the abrasive particles thereby forming at least one covalent bond, and
• wherein X represents a divalent organic linking group have a number average molecular weight of 1000 to 10000 grams per mole;
• abrasive particles partially embedded in the make layer;
• and
• a size layer disposed over the make layer and abrasive particles.