摘要:
A process for printing on a textile substrate comprising the steps of: (I) preparing an ink comprising the following components: (a) from 1 to 8 parts of a self-dispersible pigment which comprises a carboxy-functional dispersant crosslinked around a pigment core by a crosslinking agent having at least two groups selected from oxetane, carbodiimide, hydrazide, oxazoline, aziridine, isocyanate, N-methylol, keteneimine, isocyanurate and epoxy groups; (b) from 0 to 16 parts of a binder selected from one or more of an acrylic latex binder, a styrene acrylic latex binder and a styrene butadiene latex binder wherein the binder has a Tg in the range of from −25° C. to 35° C.; (c) from 1 to 30 parts of one or more water-miscible organic solvents (d) from 0.1 to 3 parts of a surfactant; (e) from 0 to 5 parts of biocide; (f) from 0 to 10 parts of a viscosity modifier; (g) from 0 to 10 parts of a polyurethane latex binder with a Tg in the range of from −25° C. to 35° C.; (h) from 0 to 6 parts of a cross linking agent; and (i) the balance to 100 parts water: (II) optionally preparing a latex binders solution comprising; i) from 1 to 16 parts of one or more latex binders selected from an acrylic latex binder, a styrene acrylic latex binder and a styrene butadiene latex binder where the latex binder(s) have a Tg in the range of from −25° C. to 35° C.; ii) from 0 to 6 parts of a polyurethane latex binder; and iii) from 0 to 5 parts of a cross linking agent: (III) printing the ink prepared in step (I) on to a textile substrate using a ink jet printer with a single pass print head and optionally pre-printing or overprinting with the latex binder solution from step (II) (IV) curing the printed textile substrate from step (III): provided that if component (b) in the ink prepared in step (a) is 0 then optional step (II) is compulsory. Also inks, ink-sets, ink containers and ink-jet printers.
摘要:
A process for preparing a dispersion comprising the stages: i) providing a dispersion comprising a particulate solid, a liquid medium and a dispersant having cross-linkable groups and a weight averaged molecular weight of from 1,000 to 70,000; and ii) cross-linking the dispersant in the presence of the particulate solid and the liquid medium thereby preparing a dispersion of an encapsulated particulate solid, wherein the cross-linking is performed such that 0.01 to 0.5 mmoles of cross-linkable groups in the dispersant are cross-linked per g of dispersant; said process also comprising at any stage: iii) adding a metal chelating agent to the dispersion; and after stage iii) the stage of: iv) removing at least some of the metal chelating agent from the dispersion.
摘要:
A process for the preparation of a dispersion, comprising: dispersing a composition comprising a particulate solid, a liquid medium and a dispersant; wherein the dispersant is obtained by a process comprising at least the steps a) and b): a) co-polymerising a monomer composition comprising at least the components i) and ii) so as to form a phospho-ester functional polymer: i) a monomer having at least one phospho-ester group and two groups independently selected from hydroxyl, amino, thiol and hydrazo groups, ii) a diisocyanate; and b) hydrolysing at least some of the phospho-ester groups in the phospho-ester functional polymer so as to result in a dispersant having phosphorus containing anionic groups.
摘要:
A polymeric dispersant obtained or obtainable by copolymerizing a monomer composition comprising at least the components: i) benzyl (meth)acrylate; ii) propylene glycol (meth)acrylate; wherein the weight ratio of component i) to component ii) is greater than 10:1.
摘要:
A process for preparing an encapsulated pigment dispersion suitable for use in an ink jet printing ink comprising the following steps in the order I) followed by II): I) providing a dispersion comprising a pigment, a liquid medium and a dispersant comprising the repeat units from copolymerising the ethylenically unsaturated monomers in components a) to c): a) from 75 to 97 parts of one or more hydrophobic ethylenically unsaturated monomers comprising at least 50 parts benzyl (meth) acrylate; b) from 3 to 25 parts one or more hydrophilic ethylenically unsaturated monomers having one or more ionic group(s); c) from 0 to 2 parts of one or more hydrophilic ethylenically unsaturated monomers having a hydrophilic non-ionic group; and wherein the parts are by weight and the sum of the parts a) to c) add up to 100; II) cross-linking the dispersant in the presence of the pigment and the liquid medium.
摘要:
A process for preparing an encapsulated particulate solid using an epoxy functional cross-linking agent and a carboxylic acid functional dispersant wherein the cross-linking agent has one or more oligomeric dispersing group and/or the dispersant has an acid value of at least 125 mg KOH/g. The resultant solids are useful in, for example, ink jet printing inks.
摘要:
A process for preparing an aqueous pigment dispersion suitable for use in an ink jet printing ink comprising the following steps in the order I) followed by II): I) providing a dispersion having a sodium chloride critical coagulation concentration of no more than 2.0M, said dispersion comprising a pigment, an aqueous liquid medium and a dispersant having one or more ionic group(s); and II) reducing the hydrophilicity of the dispersant by reacting at least some, but not all of the ionic group(s) in the dispersant with the one or more hydrophobic compound(s).
摘要:
A process for preparing a dispersion of encapsulated solid particles in a liquid medium is described, which includes providing a dispersion comprising solid particles, a liquid medium and a polymer comprising at least one repeat unit of the Formula (1) or a salt thereof: and cross-linking the polymer, wherein X, Q1, Q2, Q3, A and m are as defined.
摘要:
A process for preparing a particulate solid is described, which comprises the steps of a) aggregating a dispersion comprising the particles i) and ii) and a liquid medium, wherein i) is 25 to 50 parts by weight of non-polymeric particles having an average particle size of from 1 to 10 microns and having a density of no more than 4 g/cm3; and ii) is 50 to 75 parts by weight of polymer particles having an average particle size of from 50 to 150 nm; b) optionally stabilising the aggregated particles; and c) heating the aggregated particles so as to cause particle coalescence.
摘要:
A compound of Formula (1) and salts thereof: wherein: A is optionally substituted heterocyclyl; X is N or C—CN; R1 is H or a substituent; R2 and R3 are independently H, optionally substituted alkyl, optionally substituted aryl, optionally substituted heterocyclyl or —SO2R4, wherein R4 is optionally substituted optionally substituted aryl or optionally substituted heterocyclyl; and provided that the compound of Formula (1) has attached, either directly or through a substituent, at least one ionic water solubilising group selected from the group consisting of CO2H, COSH, SO3H and PO3H2. Also compositions, inks, ink-jet printing processes, printed materials and ink-jet cartridges.
摘要翻译:式(1)的化合物及其盐:其中:A是任选取代的杂环基; X为N或C-CN; R1是H或取代基; R2和R3独立地是H,任选取代的烷基,任选取代的芳基,任选取代的杂环基或-SO 2 R 4,其中R 4是任选取代的任选取代的芳基或任选取代的杂环基; 并且规定式(1)的化合物直接或通过取代基连接至少一种选自CO 2 H,COSH,SO 3 H和PO 3 H 2的离子水增溶基团。 还有组合物,油墨,喷墨印刷工艺,印刷材料和喷墨墨盒。