摘要:
A process for preparing a radiation curable solid ink composition wherein a solid pigment and dispersant are added to a molten solid monomer including (a) heating a monomer that is solid at room temperature to a temperature above the monomer melting point to provide a molten solid monomer; (b) adding a curable component, a non-curable component, and a photoinitiator to the molten solid monomer to provide a molten ink base; (c) adding a dispersant to the molten ink base; and (d) a adding a pigment to the molten ink base with stirring to provide a curable pigmented ink composition. Included is a process for preparing a radiation curable solid ink composition wherein a liquid pigment concentrate or a solid pigment concentrate is added to an ink base.
摘要:
A radiation-curable gel ink with reduced syneresis. The inks include a curable monomer, an organic gellant, a gel-forming wax, an optional photoinitiator, and an optional colorant. Also disclosed are methods of making such inks, and methods of forming images with such inks.
摘要:
Disclosed are radiation curable phase change ink and overcoat compositions that contain a gellant, a cationically curable monomer, a cationic photoinitiator, and, optionally, a radically curable monomer and, further optionally, a free-radical photoinitiator. A phase change ink composition further contains a colorant. A phase change overcoat composition is free of colorant. The gellant may be an amide gellant. The cationically curable monomer may be selected from epoxides, vinyl ethers and oxetanes. The cationic photoinitiator may be selected from triarylsulphonium salts, diaryliodonium salts, aryldiazonium salts, triarylselenonium salts, dialkylphenacylsulphonium salts, triarylsulphoxonium salts, aryloxydiarylsulphonoxonium salts, and dialkylphenacylsulphoxonium salts, in which the salts are formed with ions selected from BF4−, PF6−, AsF6−, SbF6−, and CF3SO3−.
摘要:
A method for fabricating a three-dimensional object including depositing a first amount of an ultraviolet curable phase change ink composition comprising an optional colorant and a phase change ink vehicle comprising a radiation curable monomer or prepolymer; a photoinitiator; a reactive wax; and a gellant upon a print region surface; successively depositing additional amounts of the ultraviolet curable phase change ink composition to create a three-dimensional object; and curing the ultraviolet curable phase change ink composition.
摘要:
A polymerization process for the preparation of thermoplastic resin or resins comprising heating a mixture comprised of a free radical initiator, a stable free radical agent, at least one polymerizable monomer compound, and a sulfonic acid salt polymerization rate enhancing compound, to form a thermoplastic resin or resins with a high monomer to polymer conversion and a narrow polydispersity.
摘要:
Process for the preparation of polymers which comprises a suspension free radical polymerization of monomers in the presence of the initiator O,O-t-amyl-O-(2-ethylhexyl)monoperoxycarbonate.
摘要:
A process including disposing at least one phase separation ink in an imagewise fashion onto a final image receiving substrate to form an ink image, wherein disposing is at a first temperature at which the at least one phase separation ink is in a molten, unseparated state; cooling the ink image to a second temperature sufficient to initiate crystallization of at least one component of the at least one phase separation ink, wherein at the second temperature the at least one phase separation ink comprises a crystalline phase and an amorphous phase; wherein the amorphous phase of the at least one phase separation ink substantially penetrates into the final image receiving substrate; and wherein the crystalline phase of the at least one phase separation ink substantially remains on the surface of the final image receiving substrate; applying pressure to the ink image on the final image receiving substrate; and allowing the ink to complete crystallization.
摘要:
A phase change ink composition suitable for high speed ink jet printing, including printing on coated paper substrates. In particular, the phase change ink composition comprises an aromatic diester crystalline compound and an amorphous compound, and optionally, a colorant, which provides for a robust ink.
摘要:
A phase change ink composition comprising an amorphous component, a crystalline material, and optionally, a colorant, which are suitable for high speed ink jet printing, including printing on coated paper substrates. In embodiments, the amorphous component comprises a diurethane compound or derivatives thereof.