Blocked silicone dual cure resins for additive manufacturing
AssigneeCarbon, Inc.
InventorsJessica D. Drazba, Kai Chen, Jason P. Rolland
Life of this patent
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Abstract
A polymerizable liquid useful for the production of a three-dimensional object comprised of silicone, or a copolymer thereof, which includes at least one constituent selected from the group consisting of (i) a blocked or reactive blocked siloxane-containing prepolymer, (ii) a blocked or reactive blocked siloxane-containing polyisocyanate, and (iii) a blocked or reactive blocked siloxane-containing polyisocyanate chain extender. Methods of using the same in additive manufacturing processes such as continuous liquid interface production are also described.
Claims29
A polymerizable liquid useful for the production of a three-dimensional object comprised of a silicone polymer or a copolymer thereof by additive manufacturing, said polymerizable liquid comprising a mixture of:
- (a) from 5 to 90 percent by weight of a blocked or reactive blocked siloxane-containing prepolymer,
- (b) from 5 to 90 percent by weight of a chain extender,
- (c) from 0.01 to 4 percent by weight of a photoinitiator,
- (d) optionally a polyol and/or a polyamine,
- (e) optionally a reactive diluent,
- (f) optionally, a light absorbing pigment or dye in an amount of from 0.001 to 10 percent by weight, and
- (g) optionally a filler.
A polymerizable liquid useful for the production of a three-dimensional object comprised of a silicone polymer or a copolymer thereof by additive manufacturing, said polymerizable liquid comprising a mixture of:
- (a) a blocked or reactive blocked siloxane-containing polyisocyanate,
- (b) optionally a polyol and/or polyamine,
- (c) a chain extender,
- (d) a photoinitiator,
- (e) optionally a reactive diluent,
- (f) optionally a pigment or dye, and
- (g) optionally a filler.
A polymerizable liquid useful for the production of a three-dimensional object comprised of a silicone polymer or a copolymer thereof by additive manufacturing, said polymerizable liquid comprising a mixture of:
- (a) a polyol and/or polyamine,
- (b) a blocked or reactive blocked siloxane-containing polyisocyanate chain extender,
- (c) optionally one or more additional chain extenders,
- (d) a photoinitiator,
- (e) optionally a reactive diluent,
- (f) optionally a pigment or dye, and
- (g) optionally a filler.
Dependencies are inferred from the claim text.