Photoresponsive azobenzene functional nanogels and their use in dental adhesives
OwnerDevatha P. Nair, Dixa Gautam +2inventors
InventorsDevatha P. Nair, Dixa Gautam, Rinku Trevedi, Jeffrey Stansbury
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Abstract
A light responsive azobenzene functional nanogel comprises the solution polymerization product of an azobenzene having a first reactive group and a monomer mixture comprising one or more polymerizable monomers having a second reactive group reactive with the first reactive group. The light responsive azobenzene can be combined with a functional material and solvent to form a photomotive composition characterized in that irradiating with light induces movement of the composition. The photomotive composition can be a dental adhesive as a single component system or in the form of a kit.
Claims20
A light responsive azobenzene functional nanogel comprising a reaction product of an azobenzene having a first reactive group and a monomer mixture comprising one or more polymerizable monomers having a second reactive group reactive with the first reactive group.
A kit comprising
- a first container having contents comprising a free radical initiator and at least one of (a) a light responsive azobenzene functional nanogel comprising a reaction product of an azobenzene having a first reactive group and a monomer mixture comprising one or more polymerizable monomers having a second reactive group reactive with the first reactive group and (b) a polymer or a polymer precursor;
- a second container having contents comprising a catalyst and at least one of (a) a light responsive azobenzene functional nanogel comprising a reaction product of an azobenzene having a first reactive group and a monomer mixture comprising one or more polymerizable monomers having a second reactive group reactive with the first reactive group and (b) a polymer or a polymer precursor,
- provided that the light responsive azobenzene functional nanogel is present in at least one of the first container and the second container, and the polymer or the polymer precursor is present in at least one of the first container and the second container.
A method comprising
- providing a substrate,
- applying a composition to the substrate where the composition comprises a photoresponsive azobenzene functional nanogel, a functional component and a solvent,
- irradiating the composition on the substrate with light to induce movement of the composition on the substrate to a desired location on the substrate.
Dependencies are inferred from the claim text.