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Golf ball with CD-based rotaxane
7 June, 2017
A recently published US patent discloses a strange application of CDs: coating of golf balls with a mixture of polyurethane and CD-based polyrotaxane to provide excellent spin performance under wet conditions.
The advantage of the polyrotaxane structure is its viscoelasticity due to the free moving CD rings on a linear molecule as axle even if a tension is applied. Such linear molecules include polyalkylene, polyester, polyether and polyacrylic acid, most preferably polyethylene glycol with terminal blocking groups, such as a covalently linked CD or adamantyl groups.
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