Polymerizable liquids are described herein which, in some embodiments, can produce 3D printed articles of high resolution and desirable mechanical properties. In one aspect, a polymerizable liquid comprises an acrylate component, a polymeric additive, and a monomeric curing agent, wherein the acrylate component and monomeric curing agent are copolymerizable upon exposure to light. In being copolymerizable, the acrylate component and monomeric curing agent can form a copolymer. As described father herein, the monomeric curing agent can enable further reaction of the copolymer with one or more crosslinking species to link the copolymer with one more polymeric networks.

Polymerizable liquids are described herein which, in some embodiments, can produce 3D printed articles of high resolution and desirable mechanical properties. In one aspect, a polymerizable liquid comprises an acrylate component, a polymeric additive, and a monomeric curing agent, wherein the acrylate component and monomeric curing agent are copolymerizable upon exposure to light. In being copolymerizable, the acrylate component and monomeric curing agent can form a copolymer. As described father herein, the monomeric curing agent can enable further reaction of the copolymer with one or more crosslinking species to link the copolymer with one more polymeric networks.

A fuel cell system component ink includes a fuel cell system component powder, a solvent including propylene carbonate (PC), and a binder including polypropylene carbonate (PPC).

Provided is an ultraviolet curable silicone composition capable of being ejected via inkjet ejection. The composition of the invention is an ultraviolet curable silicone composition comprising: (A) an organopolysiloxane represented by the following general formula (1)

##STR00001##

wherein each R.sup.1 independently represents a group selected from a monovalent aliphatic hydrocarbon group having 1 to 10 carbon atoms, an acryloyl group, a methacryloyl group, an alkyl acrylate group and an alkyl methacrylate group, while the component (A) has per molecule at least two groups selected from an acryloyl group, a methacryloyl group, an alkyl acrylate group and an alkyl methacrylate group; n represents a number satisfying 10≤n≤1,000; (B) a monofunctional (meth)acrylate compound having no siloxane structure; and/or (C) a multifunctional (meth)acrylate compound having no siloxane structure; and (D) a photopolymerization initiator.

Provided is an ultraviolet curable silicone composition capable of being ejected via inkjet ejection. The composition of the invention is an ultraviolet curable silicone composition comprising: (A) an organopolysiloxane represented by the following general formula (1)

##STR00001##

wherein each R.sup.1 independently represents a group selected from a monovalent aliphatic hydrocarbon group having 1 to 10 carbon atoms, an acryloyl group, a methacryloyl group, an alkyl acrylate group and an alkyl methacrylate group, while the component (A) has per molecule at least two groups selected from an acryloyl group, a methacryloyl group, an alkyl acrylate group and an alkyl methacrylate group; n represents a number satisfying 10≤n≤1,000; (B) a monofunctional (meth)acrylate compound having no siloxane structure; and/or (C) a multifunctional (meth)acrylate compound having no siloxane structure; and (D) a photopolymerization initiator.

Embodiment of the present invention relate to a continuous inkjet ink composition which uses a higher order ketone solvent or solvents (ketones having 5 or more carbon atoms) in place or more hazardous solvents such as methyl ethyl ketone and a secondary solvent with a higher derived no effect inhalation level greater than 200 mg/m.sup.3 such as ethanol. These ink compositions contain a combination of resins including a cellulose resin and a polyurethane resin or an acrylic resin, with an optional third resin. A colorant (i.e., a dye, preferably a conductive dye) also is included.

Embodiment of the present invention relate to a continuous inkjet ink composition which uses a higher order ketone solvent or solvents (ketones having 5 or more carbon atoms) in place or more hazardous solvents such as methyl ethyl ketone and a secondary solvent with a higher derived no effect inhalation level greater than 200 mg/m.sup.3 such as ethanol. These ink compositions contain a combination of resins including a cellulose resin and a polyurethane resin or an acrylic resin, with an optional third resin. A colorant (i.e., a dye, preferably a conductive dye) also is included.

Resistive inks and method of making resistive inks that utilize a phthalonitrile resin as a curable component in the inks are disclosed. In one example, a resistive ink is provided. The resistive ink comprises a solvent, a thermally-curable phthalonitrile-based resin dissolved in the solvent, and one or more conductive fillers. In some examples, the phthalonitrile resin can comprise a B-staged material.

Resistive inks and method of making resistive inks that utilize a phthalonitrile resin as a curable component in the inks are disclosed. In one example, a resistive ink is provided. The resistive ink comprises a solvent, a thermally-curable phthalonitrile-based resin dissolved in the solvent, and one or more conductive fillers. In some examples, the phthalonitrile resin can comprise a B-staged material.

An ink includes a siloxane polymer having at least 13 mol. % diphenylsiloxane content relative to the total mol. % of the siloxane polymer, and a filler having a refractive index about matching a refractive index of the siloxane polymer where the refractive indices are within about 5% of one another but are ideally as closely matched as possible.