Polyurethane Elastomer Composition For Use In Making Dental Appliances
OwnerLi Luo Skelton, Danielle Ruggieroinventors
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Abstract
A hard, solvent free, substantially non-hydrophilic polyurethane elastomer for use in making dental appliances. The elastomer has a hardness of not less than about Shore D65. A polyether or polyester polyol with a functionality greater than two and a molecular weight greater than one hundred is reacted with an isocyanate prepolymer prepared from one or more branched polyether or polyester polyols with a functionality greater than two; and then blending prepolymer and first polyether or polyester polyol with nanoparticles. In one embodiment, the polypropylene glycol triether and the isocyanate prepolymer comprises dicyclohexylmethane 4,4′-diisocyanate.
Claims10
A hard, solvent free, substantially non-hydrophilic polyurethane, elastomer composition having a hardness of not less than about Shore D65 comprising:
- polyether or polyester polyol with a functionality greater than with a molecular weight greater than one hundred reacted with an isocyanate prepolymer prepared from one or more branched polyether or polyester polyols with a functionality greater than two, said prepolymer and first polyether or polyester polyol blended with nanoparticles.
A synthetic resin-based dental material composition comprising:
- a hard, solvent free, substantially hydrophilic polyurethane elastomer incorporating nanoparticles, said elastomer having a hardness of not less than about Shore D65, said hard elastomer consisting essentially of the reaction product of a polyether or polyester polyol with a functionality greater than two and a molecular weight greater than one hundred and an isocynate prepolymer prepared from one or more branched polyether or polyester polyols, said prepolymer with a functionality greater than two, said isocyanate being either aliphatic or aromatic.
Dependencies are inferred from the claim text.