Silicone dual cure resins for additive manufacturing

A method of forming a three-dimensional object comprised of a silicone polymer, said method comprising:

• (a) providing a silicone dual cure resin;
• wherein said silicone dual cure resin comprises:
• (i) a light polymerizable first reactant;
• (ii) a photoinitiator;
• (iii) a second reactant comprising at least one siloxane linkage, and
• (iv) optionally a catalyst;
• wherein said light polymerizable first reactant optionally contains at least one siloxane linkage;
• (b) forming a solid polymer scaffold by irradiating said light polymerizable first reactant with patterned actinic radiation or light to form a three-dimensional intermediate from said resin, where said intermediate has the shape of, or a shape to be imparted to, said three-dimensional object, and wherein said second reactant is carried within the polymer scaffold in unsoldified form, whereby said three-dimensional intermediate is fabricated in a layer-by-layer or layerless manner through multiple exposures of the patterned actinic radiation or light;
• then
• (c) further reacting said three-dimensional intermediate, said further reacting sufficient to form said three-dimensional object comprised of a silicone polymer from said three-dimensional intermediate,
• wherein said further reacting in step (c) is carried out by a method comprising contacting said intermediate to moisture.