Curable compositions for three-dimensional printing
View Patent ↗Curable, phase-change compositions and inks used for printing three-dimensional objects including a curable monomer, a photoinitiator, a wax and a gellant, where the composition of the cured formulation has a room temperature modulus of from about 0.01 to about 5 Gpa. The curable monomer includes acrylic monomer, polybutadiene adducted with maleic anhydride, aliphatic urethane acrylate, polyester acrylate, 3-acryloxypropyltrimethoxysilane, or acryloxypropyl t-structured siloxane.
1. A phase-change ink set comprising:
a first ink composition, and
at least one other ink composition,
wherein each ink composition has a different room temperature storage modulus of from about 0.01 to about 5 GPa,
wherein the first ink composition and/or the at least one other ink composition comprises an amide gellant and a radiation curable monomer,
wherein the radiation curable monomer is selected from the group consisting of polybutadiene adducted with maleic anhydride, 3-acryloxypropyltrimethoxysilane, and acryloxypropyl t-structured siloxane.
2. The phase-change ink set of claim 1 , wherein the ink set comprises 2 to 10 different ink compositions.
3. A phase-change ink set comprising:
a first ink composition, and
at least one other ink composition, wherein the first ink composition and/or the at least one other ink composition comprises an amide gellant and a radiation curable monomer, at least one radiation curable monomer being selected at from the group consisting of polybutadiene adducted with maleic anhydride, aliphatic urethane acrylate, polyester acrylate, 3-acryloxypropyltrimethoxysilane, and acryloxypropyl t-structured siloxane, and further wherein each ink composition has a different room temperature storage modulus of from about 0.01 to about 5 GPa.
4. The phase-change ink set of claim 3 , wherein the ink set comprises 2 to 10 different ink compositions.
5. The phase-change ink set of claim 3 , wherein one of the radiation curable monomer is selected from the group consisting of propoxylated neopentyl glycol diacrylate, diethylene glycol diacrylate, triethylene glycol diacrylate, hexanediol diacrylate, dipropyleneglycol diacrylate, tripropylene glycol diacrylate, alkoxylated neopentyl glycol diacrylate, isodecyl acrylate, tridecyl acrylate, isobornyl acrylate, isobornyl (meth)acrylate, propoxylated trimethylolpropane triacrylate, ethoxylated trimethylolpropane triacrylate, di-trimethylolpropane tetraacrylate, dipentaerythritol pentaacrylate, ethoxylated pentaerythritol tetraacrylate, propoxylated glycerol triacrylate, isobornyl methacrylate, lauryl acrylate, lauryl methacrylate, neopentyl glycol propoxylate methylether monoacrylate, isodecylmethacrylate, caprolactone acrylate, 2-phenoxyethyl acrylate, isooctylacrylate, isooctylmethacrylate, butyl acrylate, and mixtures thereof.
6. The phase-change ink set of claim 3 , wherein the radiation curable monomer is selected from the group consisting of polybutadiene adducted with maleic anhydride, 3-acryloxypropyltrimethoxysilane, and acryloxypropyl t-structured siloxane.
7. The phase-change ink set of claim 4 , wherein the ink set comprises 5 to 10 different ink compositions.
8. The phase-change ink set of claim 3 , wherein the first ink composition has a room temperature storage modulus of from about 0.01 to about 2.5 GPa and the at least one other ink composition has a room temperature storage modulus of from about 2.5 to about 5 GPa.
9. The phase-change ink set of claim 3 , wherein the different room temperature storage modulus of each ink composition spans a range of more than 700 MPa.