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US 2026/0201099 A1Published application
Photo-curable compositions
OwnerLiang Chen, Alan D. Bushmire +1inventors
InventorsLiang Chen, Alan D. Bushmire, Vahid Karimkhani
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Abstract
A photo-curable composition can include a photo-curable resin and a photoinitiator. The photo-curable composition can typically have a shear viscosity of less than 1 Pa·s at 100° C. at a shear rate of 50 s−1 and can typically include a first prepolymer, a second prepolymer, and a reactive diluent.
Claims20
A photo-curable composition, comprising:
- a photo-curable resin comprising:
- a first prepolymer having a number average molecular weight of ≤2000 g/mol, said first prepolymer being a reaction product of a first reaction mixture comprising:
- a cycloaliphatic diisocyanate,
- a hydroxy-functional (meth)acrylate, and
- an isocyanate-reactive component, and
- a second prepolymer having a number average molecular weight of 2000 g/mol to 10,000 g/mol, said second prepolymer being a reaction product of a second reaction mixture comprising:
- a (meth)acrylate, and
- a polyactive-hydrogen compound, wherein the polyactive-hydrogen compound of the second reaction mixture has a Hansen solubility parameter of δ<18.9 MPa1/2, and
- a reactive diluent comprising a (meth)acrylate monomer and/or (meth)acrylate prepolymer;
- and
- a photoinitiator,
- wherein the photo-curable composition has a shear viscosity of less than 1 Pa·s at 100° C. at a shear rate of 50 s−1.
9 more elements
Dependencies are inferred from the claim text.