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US 5,052,380 AGranted
Colored orthopedic resins and orthopedic casting materials incorporating same
AssigneeMinnesota Mining and Manufacturing Company
InventorCharles C. Polta
Life of this patent
Estimating the term…
Abstract
The present invention relates to colored orthipedic resins and colored orthopedic casting materials which are storage stable. In making the colored orthopedic resins and colored orthopedic casting materials, a chromophore-containing polyol is covalently bonded into a prepolymer resin.
Claims15
A colored orthopedic casting material, comprising:
- a flexible sheet;
- and
- a water curable resin coated onto said flexible sheet, said resin comprising an isocyanate functional, polyurethane prepolymer, said prepolymer being a liquid formed by the reaction of a polyol with an excess of a polyisocyanate, at least a portion of said polyol comprising a chromophore-containing polyol which becomes covalently bound into said prepolymer, said chromophore-containing polyol imparting a desired color to said resin-coated sheet;
- wherein said colored resin-coated sheet is stored in a moisture-free pouch until its desired usage, and wherein said colored resin-coated sheet is storage stable prior to such usage.
1 more element
Dependencies are inferred from the claim text.