| abstract |
The present invention relates to a self-healing polyurethane, a polyol for use in the polyurethane, and to the use of the polyol and/or polyurethane in coatings, elastomers, composites, adhesives and/or sealants. The polyurethane is capable of exhibiting self-healing (for example, intrinsic self-healing) which results in recovery of a proportion of one or more physical parameters. The polyurethane which is capable of self-healing is the reaction product of reactants comprising a polyol, a polyisocyanate; and optionally, a chain extender. The polyol comprises at least one dimer fatty residue; at least one urethane, amide or carbonate group; and at least two hydroxyl end groups. |