Abstract: This invention provides stable aqueous compositions including stable coating compositions, and methods of their production. The stable aqueous compositions and stable aqueous coating compositions comprise one or more emulsion-polymerized addition polymer, one or more carboxylesterase enzyme, and one or more carboxylesterase deactivating agent, such that the ester hydrolysis activity in the composition is less than 0.010 micromole/minute, and wherein the aqueous composition has a headspace volatile organic compound (VOC) content, as measured by headspace gas chromatography-mass spectrometry (GC-MS) at 33° C., of less than 10 ppm of organic carboxylester with a normal boiling point of less than 150° C. and more than 50 ppm of mono-alcohol with a formula molecular weight of less than 76.

Abstract: This invention provides stable aqueous compositions including stable coating compositions, and methods of their production. The stable aqueous compositions and stable aqueous coating compositions comprise i) an aqueous dispersion of one or more emulsion-polymerized addition polymer comprising polymerized units of one or more carboxylester monomer, wherein at least one carboxylester monomer is a vinyl ester monomer; ii) one or more carboxylesterase enzyme; iii) one or more mono-alcohol with a formula molecular weight of less than 76; iv) optionally, acetaldehyde; and v) optionally, one or more organic carboxylester with a normal boiling point of less than 150° C.; and wherein the aqueous composition has a headspace volatile organic compound (VOC) content, as measured by headspace gas chromatography-mass spectrometry (GC-MS) at 33° C.

Abstract: This invention provides stable aqueous compositions including stable coating compositions, and methods of their production. The stable aqueous compositions and stable aqueous coating compositions comprise i) an aqueous dispersion of one or more emulsion-polymerized addition polymer comprising polymerized units of one or more carboxylester monomer, wherein at least one carboxylester monomer is a vinyl ester monomer; ii) one or more carboxylesterase enzyme; iii) one or more mono-alcohol with a formula molecular weight of less than 76; iv) optionally, acetaldehyde; and v) optionally, one or more organic carboxylester with a normal boiling point of less than 150° C.; and wherein the aqueous composition has a headspace volatile organic compound (VOC) content, as measured by headspace gas chromatography-mass spectrometry (GC-MS) at 33° C.

Abstract: This invention provides stable aqueous compositions including stable coating compositions, and methods of their production. The stable aqueous compositions and stable aqueous coating compositions comprise one or more emulsion-polymerized addition polymer, one or more carboxylesterase enzyme, and one or more carboxylesterase deactivating agent, such that the ester hydrolysis activity in the composition is less than 0.010 micromole/minute, and wherein the aqueous composition has a headspace volatile organic compound (VOC) content, as measured by headspace gas chromatography-mass spectrometry (GC-MS) at 33° C., of less than 10 ppm of organic carboxylester with a normal boiling point of less than 150° C. and more than 50 ppm of mono-alcohol with a formula molecular weight of less than 76.

Abstract: A color ink-jet printer is provided, with one pen for dispensing black ink onto a print medium and at least one pen for dispensing color ink onto a print medium. The pen for dispensing black ink contains a fade resistant dye-based ink and the pen(s) for dispensing color ink(s) contain a pigment-based ink(s). Such a color ink-jet printer provides both superior color gamut with contrast and excellent fade resistance. Since the black ink does not need to be chromatic one can employ fade resistant dyes that do not decrease the lightfastness of the whole ink set. In addition, very soluble fade resistant dyes can be used reliably in high concentrations allowing the black ink to provide more optical density than current pigment-based black inks.

Abstract: The present invention provides a 100% solids Uv curable ink. A 100% solids Uv curable ink should emit substantially less VOCs than an organic solvent-based ink because the components of the solids ink are intended to become part of the Uv cured product. An ink for one embodiment of the present invention can comprise more than one resin, a photoinitiator, a carrier medium; and a colorant. Preferably the one polymerizable resin is a highly functional resin and another polymerizable resin is a low functional resin. One resin may be high viscosity and the other low viscosity. The ink could be suitable for use in a drop on demand print system such as with a piezoelectric printer.

Abstract: A color ink-jet printer is provided, with one pen for dispensing black ink onto a print medium and at least one pen for dispensing color ink onto a print medium. The pen for dispensing black ink contains a fade resistant dye-based ink and the pen(s) for dispensing color ink(s) contain a pigment-based ink(s). Such a color ink-jet printer provides both superior color gamut with contrast and excellent fade resistance. Since the black ink does not need to be chromatic one can employ fade resistant dyes that do not decrease the lightfastness of the whole ink set. In addition, very soluble fade resistant dyes can be used reliably in high concentrations allowing the black ink to provide more optical density than current pigment-based black inks.

Abstract: An ink jet cartridge is refilled by establishing a fill opening extending from an outer portion of the cartridge into an interior ink bladder of the cartridge, applying pressure to sides of the cartridge to provide a decreased volume of the interior ink bladder, transferring ink into the interior ink bladder through the fill opening while maintaining the decreased volume, sealing the fill opening, and relieving pressure on the sides of the cartridge to provide an increased volume of the interior ink bladder. The fill opening can be established using a poker. Transferring ink can include using a squeeze bottle filled with ink. Pressure can be applied to the sides of the cartridge with a clamp similar to a #100 binder clip manufactured by Office Mate International Corporation of Edison, N.J. The fill opening can be sealed with a set screw or a ball cork along with pressure-sensitive tape.