WATERBORNE CLEAR INK COMPOSITIONS

• Main Authors: MOORLAG, CAROLYN, CLARIDGE, ROBERT CHRISTOPHER, SACRIPANTE, GUERINO G, CHOPRA, NAVEEN, ABRAHAM, BIBY ESTHER
• Format: Patent
• Language: English; French
• Published: 03.05.2022
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; CORRECTING FLUIDS; DYES; FILLING PASTES; INKS; LINING MACHINES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PERFORMING OPERATIONS; POLISHES; PRINTING; PRINTING MACHINES OR PRESSES; STAMPS; TRANSPORTING; TYPEWRITERS; USE OF MATERIALS THEREFOR; WOODSTAINS

An aqueous ink composition including water; an optional co-solvent; a sulfonated polyester, wherein the sulfonated polyester has a degree of sulfonation of at least about 3.5 mol percent; and an isoprene rubber. A process of digital offset printing including applying an ink composition onto a re-imageable imaging member surface at an ink take up temperature, the re-imageable imaging member having dampening fluid disposed thereon; forming an ink image; transferring the ink image from the re-imageable surface of the imaging member to a printable substrate at an ink transfer temperature; wherein the ink composition comprises water; an optional co-solvent; a sulfonated polyester having a degree of sulfonation of at least about 3.5 mol percent; and an isoprene rubber. A process including combining a sulfonated polyester resin, having a degree of sulfonation of at least about 3.5 mol percent, water, an optional co-solvent, and an isoprene rubber to form an aqueous ink composition, wherein the ink composition is substantially colorless. Une composition dencre aqueuse comprend de leau, un co-solvant facultatif, un polyester sulfoné ayant un point de sulfonation dau moins environ 3,5 % molaire et un caoutchouc disoprène. Un procédé doffset numérique comprend lapplication dune composition dencre sur un élément dimagerie pouvant être réimagé à une température de prise dencre, lélément ayant un fluide dhumection appliqué, la formation dune image à lencre, le transfert de limage de la surface pouvant être réimagée à un substrat imprimable à une température de transfert dencre, la composition dencre comprenant de leau, un co-solvant facultatif, un polyester sulfoné ayant un point de sulfonation dau moins environ 3,5 % molaire et un caoutchouc disoprène. Un procédé comprend la combinaison dune résine de polyester sulfoné ayant un point de sulfonation dau moins environ 3,5 % molaire, deau, dun co-solvant facultatif et dun caoutchouc disoprène pour former une composition dencre aqueuse, qui est essentiellement incolore.