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US 11,629,202 B2Granted
Dual cure stereolithography resins containing thermoplastic particles
AssigneeCarbon, Inc.
InventorsMatthew S. Menyo, Lloyd M. Robeson
Life of this patent
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Abstract
Provided herein according to some embodiments is a dual cure stereolithography resin that includes thermoplastic particles, which thermoplastic particles are insoluble in the resin and insoluble during a first, light, cure in which an intermediate object is produced, but then dissolve or swell in the intermediate object during the second, heat, cure.
Claims23
A dual cure resin useful for making a three-dimensional object by stereolithography, comprising:
- (a) light-polymerizable monomers and/or prepolymers that can participate in forming an intermediate object by stereolithography;
- (b) heat-polymerizable monomers and/or prepolymers;
- (c) thermoplastic particles dispersed in said resin, which particles are (i) insoluble in said resin and insoluble during a first, light, cure in which an intermediate object is produced, and which particles (ii) dissolve or swell in the intermediate obj ect during a second, heat, cure thereof;
- (d) a Diels-Alder adduct, which adduct is light polymerizable during stereolithography and so can participate in forming an intermediate object, and on heating of the intermediate object yields a bis-maleimide that can further react and/or polymerize in the intermediate object during heat cure thereof to thereby form the three-dimensional object;
- and
- (e) optionally, a hardener.
3 more elements
Dependencies are inferred from the claim text.