Organic-inorganic hybrid photocurable compositions
AssigneeAmerican Dye Source, Inc.
InventorsMy T. Nguyen, Vadym Nazarov
Life of this patent
Estimating the term…
Abstract
Described herein is a photocurable resin composition for stereolithography comprising (a) a photocurable component, liquid at room temperature and comprising a photopolymerizable substance selected from monomers, oligomers, dendrimers and polymers and mixtures thereof, (b) at least one photoinitiator compound, and (c) at least one photoactivated color changing compound. The color changing compound can be adapted to go from essentially colorless to a given color, one given color to another or from a given color to colorless. Optionally, the resin composition will also contain component (d), namely at least one reactive silsesquioxanes (POSS).
Claims22
A photocurable resin composition for stereolithography wherein said resin composition is a color-shifting composition upon being subjected to photocuring, said resin composition comprising:
- (a) a photocurable component, liquid at room temperature and comprising a photopolymerizable substance selected from monomers, oligomers, dendrimers and polymers and mixtures thereof, said photopolymerizable substance consisting of:
- bis(2,3-epoxycyclopentyl)ether,
- 2,3-epoxycyclopentyl glycidyl ether,
- 1,2-bis(2,3-epoxycyclopentyloxy)ethane,
- bis(4-hydroxycyclohexyl)methane diglycidyl ether,
- 2,2-bis(4-hydroxycyclohexyl)propane diglycidyl ether,
- 3,4-epoxycyclohexyl-methyl-3,4-epoxycyclohexanecarboxylate,
- 3,4-epoxy-6-methyl-cyclohexylmethyl-3,4-epoxy-6-methylcyclohexane-carboxylate,
- di(3,4-epoxycyclohexylmethyl)haxanedioate,
- di(3,4-epoxy-6-methylcyclohexylmethyl)hexanedioate,
- ethylenebis(3,4-epoxycyclohexanecarboxylate,
- ethanediol di(3,4-epoxycyclohexylmethyl)ether,
- vinylcyclohexene dioxide,
- dicyclopentadiene diepoxide, or
- 2-(3,4-epoxycyclohexyl-5,5-spiro-3,4-epoxy)cyclohexane-1,3-dioxane;
- (b) at least one photoinitiator compound,
- (c) at least one photoactivated color changing compound and
- (d) at least one functionalized reactive polysilsesquioxane compound wherein said polysilsesquioxane compound is functionalized so as to be photocurable and therefore capable of becoming solid and further functionalized so as to be soluble or dispersible and non-settling in the said resin composition.
Dependencies are inferred from the claim text.