Classifications

• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
  • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
  • D21H21/16—Sizing or water-repelling agents
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
  • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
  • B41M5/52—Macromolecular coatings
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
  • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
  • B41M5/52—Macromolecular coatings
  • B41M5/5245—Macromolecular coatings characterised by the use of polymers containing cationic or anionic groups, e.g. mordants
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
  • C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
  • C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
  • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
  • D06P1/52—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
  • D06P1/5207—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
  • D06P1/5214—Polymers of unsaturated compounds containing no COOH groups or functional derivatives thereof
  • D06P1/5242—Polymers of unsaturated N-containing compounds
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
  • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
  • D06P1/52—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
  • D06P1/5264—Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
  • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
  • D06P1/52—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
  • D06P1/5264—Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds
  • D06P1/5278—Polyamides; Polyimides; Polylactames; Polyalkyleneimines
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
  • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
  • D06P1/52—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing synthetic macromolecular substances
  • D06P1/5264—Macromolecular compounds obtained otherwise than by reactions involving only unsaturated carbon-to-carbon bonds
  • D06P1/5285—Polyurethanes; Polyurea; Polyguanides
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
  • D06P5/001—Special chemical aspects of printing textile materials
• • D—TEXTILES; PAPER
  • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
  • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
  • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
  • D06P5/30—Ink jet printing
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
  • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
  • B41M5/502—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording characterised by structural details, e.g. multilayer materials
  • B41M5/508—Supports
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
  • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
  • B41M5/52—Macromolecular coatings
  • B41M5/5227—Macromolecular coatings characterised by organic non-macromolecular additives, e.g. UV-absorbers, plasticisers, surfactants
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
  • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
  • B41M5/52—Macromolecular coatings
  • B41M5/5236—Macromolecular coatings characterised by the use of natural gums, of proteins, e.g. gelatins, or of macromolecular carbohydrates, e.g. cellulose
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
  • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
  • B41M5/50—Recording sheets characterised by the coating used to improve ink, dye or pigment receptivity, e.g. for ink-jet or thermal dye transfer recording
  • B41M5/52—Macromolecular coatings
  • B41M5/5254—Macromolecular coatings characterised by the use of polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
  • D21H17/20—Macromolecular organic compounds
  • D21H17/33—Synthetic macromolecular compounds
  • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
  • D21H17/54—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen
• • D—TEXTILES; PAPER
  • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
  • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
  • D21H19/00—Coated paper; Coating material
  • D21H19/36—Coatings with pigments
  • D21H19/44—Coatings with pigments characterised by the other ingredients, e.g. the binder or dispersing agent
  • D21H19/62—Macromolecular organic compounds or oligomers thereof obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
  • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
  • Y10T442/00—Fabric [woven, knitted, or nonwoven textile or cloth, etc.]
  • Y10T442/20—Coated or impregnated woven, knit, or nonwoven fabric which is not [a] associated with another preformed layer or fiber layer or, [b] with respect to woven and knit, characterized, respectively, by a particular or differential weave or knit, wherein the coating or impregnation is neither a foamed material nor a free metal or alloy layer
  • Y10T442/2221—Coating or impregnation is specified as water proof
  • Y10T442/2246—Nitrogen containing

Definitions

• the present invention is directed to treatment of textiles, and more particularly relates to a method and composition for treating textiles to improve the quality of images printed thereon.
• the inks are typically composed of water and a colorant, usually a dye or pigment dispersion, and often contain a number of additives for imparting certain features to the ink, e.g., improved stability and flow, smear resistance, and the like.
• inkjet printing techniques to print on textiles has met with several problems.
• inkjet printed images on textiles are often of low quality.
• the printed images often smear upon handling, exhibit bleed (the intrusion of one color into an adjacent color), are moisture sensitive, and are dull, i.e., colored inks when printed fail to accurately produce the expected hues.
• the printed images are often neither water-fast nor detergent- resistant, resulting in fading of the printed image after washing.
• the present invention features a novel method and composition for coating textile substrates, wherein the composition is composed of a coating agent selected from one of (a) an azetidinium polymer, (b) a guanidine polymer, (c) a mixture of an azetidinium polymer and a guanidine polymer, and (d) a copolymer of an azetidinium monomer and a guanidine monomer.
• the coating composition When applied to a textile substrate, provides a coated textile substrate that yields high quality printed images when printed with an ink containing a reactive dye having ionizable and/or nucleophilic groups capable of reacting with the coating agent.
• Images printed on a textile substrate coated with the coating composition of the invention are bleed-resistant, water-resistant (e.g., water-fast), detergent- resistant (e.g., detergent-fast), and/or are characterized by an enhanced chroma and hue. It is a primary object of the invention to address the above-mentioned need in the art by providing a coating composition that can be readily applied to a variety of textile substrates and that efficiently binds colorant upon printing, thus providing an economical, efficient means for processing textiles so as to facilitate production of a high quality printed image.
• water-resistant e.g., water-fast
• detergent- resistant e.g., detergent-fast
• Still an additional object of the invention is to provide a method for printing on a coated textile substrate to provide water-resistant (e.g., water-fast) and/or detergent-resistant (e.g., detergent-fast) images thereon.
• water-resistant e.g., water-fast
• detergent-resistant e.g., detergent-fast
• “Textile” or “textile substrate” as used herein refers to any cellulose-based or non- cellulose based textile material suitable for use as a printing substrate in connection with the coatings and/or methods of the invention. In general, where appropriate, the textile substrate has been sized, internally and/or externally, prior to application of the compositions of the invention.
• treated textile substrate refers to a textile substrate that is treated with, i.e., has applied to its surface and/or is partially or wholly saturated with, a coating of the present invention, to provide for improved printing performance, particularly with respect to water resistance (e.g., water-fastness), detergent resistance (e.g., detergent-fastness), brightness, and the like.
• the coating may be applied as a pretreatment, i.e., prior to printing, simultaneously with printing, or as an after-treatment.
• the coating is applied to the substrate in a separate coating operation prior to printing, typically in amounts ranging from fifty (50) to five hundred (500) pounds per ton of substrate.
• Coating composition as used herein is generally meant to refer to a composition of the invention comprised of a coating agent as described herein.
• the coating composition may contain components in addition to the coating agents described herein, such as binders, colorants, etc.
• the use of the term “coating” in the phrase “coating composition” is not limited to the presence of the composition on a surface of a textile substrate, but is also intended to encompass a textile substrate that has been infiltrated with the composition, such that the composition is present within the fibers of the treated substrate.
• coating in reference to the coating compositions and coating agents of the invention is used only as a term of convenience, and is not meant to be limiting as to the manner of application of the compositions of the invention, or their final location on and/or within a treated textile substrate.
• Aqueous based ink refers to an ink composed of an aqueous carrier medium and a colorant, such as a dye or a pigment dispersion.
• An aqueous carrier medium is composed of water or a mixture of water and one or more water-soluble organic solvents. Exemplary aqueous based ink compositions are described in detail below.
• Colorant as used herein is meant to encompass dyes, pigments, stains, and the like compatible for use with the coating agents and compositions of the invention.
• colorant-reactive component refers to a component (e.g., a chemical moiety) of a coating agent of the invention that is capable of reacting with a selected colorant, particularly a colorant having a nucleophilic and/or ionizable group, to form a coating agent-colorant complex.
• the coating agent-colorant complex is formed through either a covalent, electrostatic, or ionic association between the colorant-reactive coating agent and the colorant
• a coating agent having a colorant-reactive component and a selected colorant form a coating agent-colorant complex in the context of a printed image on a textile substrate
• the association between the colorant and the color-reactive component of the coating agent is effective to impart advantageous qualities to the printed image on the textile substrate, particularly with respect to water resistance, detergent resistance, enhanced optical density, enhanced brightness, and the like
• organic solvent is used herein in its conventional sense to refer to a liquid organic compound, typically a monome ⁇ c organic material in the form of a liquid, preferably a relatively nonviscous liquid, the molecular structure of which contains hydrogen atoms, carbon atoms, and optionally other atoms as well, and which is capable of dissolving solids, gases or liquids
• a quantifiable, measurable, or otherwise detectable parameter e g , optical density, LAB graphs (color sphere), dot spread, bleed through
• the degree of visual wicking or water resistance in a treated textile substrate as detected in a print assay may be quantified using standard methods, and the degree of wicking or water resistance under different conditions can be compared for both treated and untreated textile substrates to detect statistically significant differences
• fluid resistance is used herein to describe the resistance of a textile substrate to penetration by a fluid, with the term “water resistance” specifically referring to resistance of a textile substrate
• water-fast is used herein to describe a form of water resistance, and is normally used to refer to the nature of the ink composition after drying on a substrate
• water-fast means that the dried composition is substantially insoluble in water, such that upon contact with water, the dried ink retains at least about 70%, preferably at least about 85%, and more preferably at least about 95%, of optical density
• Detergent-resistant is used herein to describe the nature of the ink composition after exposure to detergent (e g , during washing)
• Detergent-fast is intended to refer to a particular high-level of “detergent resistance,” and is generally used to mean that the dried composition is substantially insoluble in water, such that upon contact with water, the dried ink retains at least about 70%, preferably at least about 85%, and more preferably at least about 95%, of optical density.
• bleed resistance is meant to refer to the retardation of the penetration of water into a textile substrate, which retardation is associated with creation of a low energy hydrophobic surface at the textile fiber-water interface which increases the contact angle formed between a drop of liquid and the surface, and thus decreases the wettability. Contact angles have been shown to be sensitive to molecular packing, surface morphology, and chemical constitution of the textile substrate and any components added thereto.
• rubber resistance is normally meant to refer to a characteristic of the ink composition after drying on a substrate, more specifically, the ability of a printed image to remain associated with the substrate upon which it is printed despite application of force (e.g., rubbing) to the printed image.
• "rub-resistant” means that the dried ink composition is substantially resistant to rubbing force so that the dried ink retains at least about 70%, preferably at least about 85%, and more preferably at least about 95%, of optical density after rubbing of the printed image.
• alkyl refers to a branched or unbranched saturated hydrocarbon group of 1 to 24 carbon atoms, such as methyl, ethyl, /7-propyl, isopropyl, n- butyl, isobutyl, t-butyl, octyl, decyl, tetradecyl, hexadecyl, eicosyl, tetracosyl and the like, as well as cycloalkyl groups such as cyclopentyl, cyclohexyl and the like.
• lower alkyl intends an alkyl group of 1 to 6 carbon atoms, preferably 1 to 4 carbon atoms.
• alkylene refers to a difunctional, branched or unbranched saturated hydrocarbon group of 1 to 24 carbon atoms, including without limitation methylene, ethylene, ethane- 1,1 -diyl, propane-2,2-diyl, propane- 1,3 -diyl, butane- 1,3-diyl, and the like.
• “Lower alkylene” refers to an alkylene group of 1 to 6 carbon atoms.
• alkoxy intends an alkyl group bound through a single, terminal ether linkage; that is, an "alkoxy” group may be defined as -OR where R is alkyl as defined above.
• a "lower alkoxy” group intends an alkoxy group containing 1 to 6 carbon atoms.
• Halo or “halogen” refers to fluoro, chloro, bromo or iodo, and usually relates to halo substitution for a hydrogen atom in an organic compound
• polymer is used herein in its conventional sense to refer to a compound having two or more monomer units, and is intended to include homopolymers as well as copolymers
• monomer is used herein to refer to compounds which are not polymeric
• the present invention is based upon the discovery that a coating composition containing a coating agent that is (a) an azetidinium polymer, (b) a guanidine polymer, (c) a mixture of an azetidinium polymer and a guanidine polymer, or (d) a copolymer of an azetidinium monomer and a guanidine monomer, can be used to treat a textile substrate to significantly improve the quality of images printed thereon.
• a coating composition containing a coating agent that is (a) an azetidinium polymer, (b) a guanidine polymer, (c) a mixture of an azetidinium polymer and a guanidine polymer, or (d) a copolymer of an azetidinium monomer and a guanidine monomer, can be used to treat a textile substrate to significantly improve the quality of images printed thereon.
• Textile substrate that has been treated with a coating agent of the invention can provide high quality printed images having improved color fastness, that is, the printed images do not run when exposed to moisture and/or detergent, as a result of the substantially non-reversible binding of aqueous colorants to the image-enhancing agent present in the image-enhancing composition.
• These images are therefore characterized as "water-resistant” (e.g. , water-fast) and/or detergent-resistant (e.g., detergent-fast) due to the characteristics of the printed image following exposure to water and/or detergent.
• coated textile substrates of the invention can be used with conventional textile printing processes, or may be used with digital printing techniques such as inkjet printing (including drop-on-demand printing and continuous printing), to provide highly brilliant, printed images that are significantly improved in color quality, for example, with respect to chroma and hue.
• digital printing techniques such as inkjet printing (including drop-on-demand printing and continuous printing)
• the coating agents and compositions of the invention thus provide a number of advantages over conventional textile printing methods.
• the coating composition of the invention is composed of a coating agent selected from the group consisting of (a) an azetidinium polymer, (b) a guanidine polymer, (c) a mixture of an azetidinium polymer and a guanidine polymer, and (d) a copolymer of an azetidinium monomer and a guanidine monomer.
• the coating agents have a colorant-reactive component, which is capable of reacting with a selected colorant, particularly a colorant having a nucleophilic and/or ionizable group, to form a coating agent- colorant complex through a covalent, electrostatic, or ionic association.
• the coating compositions can include components such as film-forming binders, pigments, and other additives.
• the compositions can be readily prepared from commercially available starting materials and/or reagents, are compatible with additional binders or additives, can be used with a variety of base textile substrates, are compatible with a variety of printing methods, including conventional textile printing as well as digital printing methods (particularly inkjet printing, including drop-on-demand and continuous printing), and can also be used with existing commercial textile coating processes and equipment.
• the coating compositions are inexpensive to prepare, and relatively small amounts are required to provide a coated textile substrate having the advantageous features described herein.
• the coating compositions are also easy to handle due to their solubility in water (the active coating agents are hydrophilic polymers), and do not require the use of large volumes of organic solvents.
• the coating compositions also possesses good film-forming properties.
• the treated textile substrates prepared using the coating compositions of the invention exhibit improved stability upon prolonged storage, and in some instances, improved durability, as evidenced by improved strength, e g , tear strength
• the treated textile substrate does not discolor or yellow, and maintains a high degree of brightness for extended periods of time
• Textile substrates treated with the coating compositions of the invention react rapidly with a number of aqueous based colorants, thus providing a versatile coating system for use with a wide variety of available colorants
• the printed substrate does not require a separate curing step, but rather is fast-drying This fast-drying characteristic provides for printed images that are "non-sticky," thus allowing the printed textile substrate to be handled immediately after printing, for example, to allow stacking
• the treated textile substrate of the invention can also be used to prepare images with varying degrees of gloss, depending upon variations in pigment
• textile substrates treated with a coating composition of the invention are highly bleed-resistant (as evidenced by small dot size measurements, / e , less wicking action), detergent-resistant and rub-resistant
• Coating agents in the coating compositions of the invention generally comprise an azetidinium polymer, a guanidine polymer, a copolymer of an azetidinium monomer and a guanidine monomer, or a mixture of an azetidinium polymer and a guanidine polymer
• the coating agent represents approximately 1 wt % to 100 wt %, typically 50 wt % to 95 wt %, preferably 70 wt % to 95 wt % of the coating composition after drying on a substrate
• AZETIDINIUM POLYMERS AZETIDINIUM POLYMERS
• the coating agent is an azetidinium polymer.
• An "azetidinium polymer” is a polymer comprised of monomeric subunits containing a substituted or unsubstituted azetedine ring (i.e., a four membered nitrogen-containing heterocycle).
• the azetidinium polymers useful herein are composed of monomer units having the structural formula (I):
• R 1 and R 2 are independently lower alkylene
• X " is an anionic, organic or inorganic counterion
• Y 1 , Y 2 and Y 3 are selected from the group consisting of hydrogen, hydroxyl, halo, alkoxy, alkyl, amino, carboxy, acetoxy, cyano and sulfhydryl.
• Preferred such polymers are wherein R 1 and R 2 are methylene, X " is selected from the group consisting of halide, acetate, methane sulfonate, succinate, citrate, malonate, fumarate, oxalate and hydrogen sulfate, Y 1 and Y 3 are independently hydrogen or lower alkyl, and Y 2 is hydrogen or hydroxyl. In particularly preferred azetidinium polymers herein, Y 1 and Y 3 are hydrogen and Y 2 is hydroxyl.
• the azetidinium polymer may be a homopolymer, or it may be a copolymer, wherein one or more non-azetidinium monomer units are incorporated into the polymer structure. Any number of comonomers may be employed to form suitable azetidinium copolymers for use herein; however, a particularly preferred azetidinium copolymer is aminoamide azetidinium. Further, the azetidinium polymer may be essentially straight-chain or it may be branched or crosslinked.
• Azetidinium polymers can associate with colorant in two different ways.
• the azetidinium polymer can associate with colorant through an ionic interaction, where the colorant provides anionic groups, such as carboxy or sulfonate, that can ion-exchange with -l i ⁇
• nucleophihc groups present within the colorant can react with the azetidinium groups of the polymer via a ring-opening reaction.
• a characteristic ring-opening reaction of an azetidinium polymer of the invention may be illustrated as follows:
• the colorant (O-Nuc " ) thus covalently bonds to the coating agent, to form a cross-linked coating agent-colorant complex. Colorant thus applied to a coated textile substrate is rapidly and irreversibly bound to the textile substrate.
• the percentage of reactive azetidinium groups in the polymer can be adjusted in a controlled manner to tailor the number of reactive groups in the polymer.
• Azetidinium groups are insensitive to pH change; however, such groups are highly sensitive to the presence of anionic and nucleophihc species.
• it may be desirable to adjust the reaction conditions used to prepare the azetidinium polymer e.g., by raising the pH) to generate anionic groups within the polymer, which then participate in intramolecular crosslinking.
• a preferred azetidinium polymer for use in the present invention is shown in Formula (II)
• poly(aminoamide)-epichlorohydrin (PAE) resins Commercially available such polymers include “AMRES ® ,” available from Georgia Pacific Resins, Inc., Atlanta, GA, “KYMENE ® ,” from Hercules, Inc., Wilmington, DE, and “Polycup ® , “ also from Hercules, Inc.
• AMRES ® available from Georgia Pacific Resins, Inc., Atlanta, GA
• KYMENE ® from Hercules, Inc., Wilmington, DE
• Polycup ® also from Hercules, Inc.
• These azetidinium polymers are generally referred to as poly(aminoamide)-epichlorohydrin (PAE) resins; such resins are typically prepared by alkylating a water-soluble polyamide containing secondary amino groups with epichlorohydrin.
• azetidinium polymers will be known to those skilled in the art and/or are described in the pertinent texts, patent documents, and literature references; see, for example, Moyer, et al, in WET STRENGTH IN PAPER AND PAPERBOARD. Tappi Monograph Series No. 29, Tappi Press, Ch. 3, p. 33-37 (1965); Chan, in TAPPI WET AND DRY STRENGTH SHORT COURSE. Tappi Press, Atlanta, April 13-15, 1988; and Espy, in WET STRENGTH RESINS AND THEIR APPLICATION. Ed., Lock L. Chan, Tappi Press, Atlanta, GA (1994).
• the coating agent is a guanidine polymer, also termed a
• polyguanidine The guanidino group is extremely basic, possessing a pKa of about 12-13.
• Polyguanidines for use in the invention are typically provided as acid salts wherein the imine nitrogen atoms are for the most part in protonated form.
• guanidine polymers useful as coating agents in the present invention are either homopolymers or copolymers. All guanidine polymers herein are comprised of recurring monomer units having the structural formula
• R 3 is hydrogen or lower alkyl and R 4 is hydrogen, alkyl, alkoxy, or hydroxyl- substituted alkoxy.
• R 3 and R 4 are hydrogen.
• Particularly preferred guanidine polymers for use herein are comprised of monomer units having the structural formula (IV)
• R 3 is hydrogen or lower alkyl and R 4 is hydrogen, alkyl, alkoxy, or hydroxyl-substituted alkoxy.
• R 3 and R 4 are hydrogen.
• a particularly preferred guanidine polymer for use in the methods and compositions of the invention has the structure of formula (IV) wherein R 3 and R 4 are H and n is 6 (3,12-diimino-2,4,l 1,13-tetraazatetradecanediimidamide), available under the tradenames "BAQUACIL ® " and "VANTOCIL ® , " from Zeneca, Inc.
• Polyguanidine polymers of the invention react electrostatically with anionic groups present in the dye via ion-exchange type interactions, to rapidly and irreversibly bind anionic type dyes to print textile substrates coated with such polymers.
• the coating agent comprises a mixture of an azetidinium polymer and a guanidine polymer.
• the two polymers may be present in any suitable ratio relative to one another.
• the relative amounts of polyguanidine and polyazetidinium can range from about 0.05% polyguanidine/99.95% polyazetidinium to 0.05% polyazetidinium/99.95% polyguanidine.
• the actual relative amounts of polyguanidine and polyazetidinium will vary according to the composition of the ink to be used (e.g., the nature of the colorant in the ink), the nature of the textile substrate, and other factors affecting the use of the polymers, such as the relative market price for each polymer. In general, it is preferable to use a smaller amount of guanidine relative to azetidinium.
• the pH of the coating composition be acidic, as the composition tends to gel at basic pH. If necessary, then, an acid should be added to the coating composition to ensure that the pH is below 7.0, preferably less than about 5.5, and most preferably in the range of about 1.0 to 5.5. Suitable acids include sulfuric acid, hydrochloric acid, acetic acid, and the like.
• a preferred polymer is a poly (aminoamide)-azetidinium polymer, e.g., a polyazetidinium chloride-based polymer, such as a polyamide-polyamine-epichlorohydrin resin.
• the coating agent is a copolymer of an azetidinium monomer unit and a guanidine monomer unit.
• the azetidinium monomer unit has the structural formula (I)
• R 1 and R 2 are independently lower alkylene
• X " is an anionic, organic or inorganic counterion
• Y 1 , Y 2 and Y 3 are selected from the group consisting of hydrogen, hydroxyl, halo, alkoxy, alkyl, amino, carboxy, acetoxy, cyano and sulfhydryl.
• Preferred monomers are wherein R 1 and R 2 are methylene
• X " is selected from the group consisting of halide, acetate, methane sulfonate, succinate, citrate, malonate, fumarate, oxalate and hydrogen sulfate
• Y 1 and Y 3 are independently hydrogen or lower alkyl
• Y 2 is hydrogen or hydroxyl.
• Y 1 and Y 3 are hydrogen and Y 2 is hydroxyl.
• the guanidine monomer has the structural formula (III)
• R 3 , R 4 and n are as defined earlier herein.
• the ratio of azetidinium monomers to guanidine monomers in the copolymer, as well as the distribution of each monomer type in the copolymer, can be varied according to a number of factors, and may be, for example, tailored for use with specific colorants having certain types of ionic and/or nucleophihc groups.
• the precise composition of the copolymer may also be varied to best accommodate the nature of the textile substrate to be coated.
• the textile coating compositions of the invention preferably include a film- forming binder.
• film-forming binder is meant a substance that provides for improved strength of a textile substrate upon application of the substance to the substrate.
• Film- forming binders used in connection with the coating compositions of the invention include any film-forming binder that is compatible with the coating agent and other components of the composition.
• Exemplary film-forming binders include, but are not necessarily limited to: polysaccharides and derivatives thereof, e.g., starches, cellulosic polymers, dextran and the like; polypeptides (e.g., collagen and gelatin); and synthetic polymers, particularly synthetic vinyl polymers such as poly(vinyl alcohol), poly(vinyl phosphate), poly(vinyl pyrrolidone), vinyl-pyrrolidone-vinyl acetate copolymers, vinyl alcohol-vinyl acetate copolymers, vinyl pyrrolidone-styrene copolymers, and poly(vinylamine), and cationic film-forming binders such as quaternized vinyl pyrrolidone-dimethylaminoethyl-methacrylate copolymer, dimethylaminoethyl-methacrylate-co-methyl methacrylate, polydiallyldimethyl ammonium chloride and quaternized aminoacrylate polymers
• the coating agents herein are themselves film-forming substances; however, it is generally desirable to use these coating agents with additional film-forming substances.
• Polysaccharide binders Starches, as noted above, represent one category of suitable film-forming binders for use herein. Suitable starches may be any of a variety of natural, converted, and synthetically modified starches. Exemplary starches include, but are not necessarily limited to starch (e.g., SLS-280 (St.
• cationic starches e-g-, Cato-72 (National Starch)
• hydroxyalkylstarch wherein the alkyl has at least one carbon atom and wherein the number of carbon atoms is such that the material is water soluble, preferably from about 1 to about 10 carbon atoms, such as methyl, ethyl, propyl, butyl, or the like (e.g., hydroxypropyl starch #02382 (PolySciences, Inc.), hydroxyethyl starch #06733 (PolySciences, Inc.), Penford Gum 270 and 280 (Penford), and Film-Kote (National Starch)), starch blends (see, e.g., U.S.
• the film-forming binder can also be a synthetically produced polysaccharide, such as a cationic polysaccharide esterified by a dicarboxylic acid anhydride (see, e.g., U.S. Pat. No. 5,647,898).
• Additional saccharide binders include cellulosic materials such as alkyl celluloses, aryl celluloses, hydroxy alkyl celluloses, alkyl hydroxy alkyl celluloses, hydroxy alkyl celluloses, dihydroxyalkyl cellulose, dihydroxyalkyl cellulose, hydroxy alkyl hydroxy alkyl cellulose, halodeoxycellulose, amino deoxycellulose, dialkylammonium halide hydroxy alkyl cellulose, hydroxyalkyl trialkyl ammonium halide hydroxyalkyl cellulose, dialkyl amino alkyl cellulose, carboxy alkyl cellulose salts, cellulose sulfate salts, carboxyalkylhydroxyalkyl cellulose and the like).
• cellulosic materials such as alkyl celluloses, aryl celluloses, hydroxy alkyl celluloses, alkyl hydroxy alkyl celluloses, hydroxy alkyl celluloses, dihydroxyalkyl cellulose, dihydroxyalkyl cellulose
• Still additional film-forming binders of this type include dextran (e.g., dialkyl aminoalkyl dextran, amino dextran, and the like), carrageenan, Karaya gum, xanthan, guar and guar derivatives, (e.g., carboxyalkyl hydroxyalkyl guar, cationic guar, and the like), and gelatin.
• Additional exemplary film-forming binders include resins (e.g., such as formaldehyde resins such as melamine-formaldehyde resin, urea-formaldehyde resin, alkylated urea-formaldehyde resin, and the like ), acrylamide-containing polymers (e.g., poly(acrylamide), poly(N,N-dimethylacrylamide), and the like), poly(alkyleneimine)- containing polymers (e.g., poly(ethyleneimine), poly(ethyleneimine) epichlorohydrin, alkoxylated poly(ethyleneimine), and the like), polyoxyalkylene polymers (e.g., poly(oxymethylene), poly(oxyethylene), ethylene oxide/propylene oxide copolymers, ethylene oxide/2 -hydroxyethyl methacrylate/ethylene oxide and ethylene oxide/hydroxypropyl methacrylate/ethyleneoxide triblock copolymers, ethylene oxide-4- vinyl pyridine/ethylene oxide triblock
• any of the above exemplary film-forming binders can be used in any effective relative amounts, although typically the film-forming binder, if present, represents approximately 1 wt.% to 40 wt.%, preferably 1 wt.% to 25 wt.%, most preferably 1 wt.% to 15 wt.%) of the composition, after drying on a textile substrate.
• Additional coating composition components may include, but are not necessarily limited to, inorganic fillers, anti-curl agents, or additional conventional components such as a surfactant, plasticizer, humectant, UV absorber, light fastness enhancer, polymeric dispersant, dye mordant, optical brightener, fabric softener or leveling agent, as are commonly known in the art.
• Preferred additives are optical brighteners and fabric softeners, each of which generally represents approximately 0.5 wt.% to 2.0 wt.% of the coating composition after drying on a substrate.
• Illustrative examples of such additives are provided in U.S. Patent Nos. 5,279,885 and 5,537,137.
• the coating compositions may also include a crosslinking agent, such as zirconium acetate, ammonium zirconium carbonate, or the like, for intramolecular and/or intermolecular crosslinking of coating agent(s) in the coating composition and/or a chelating agent such as boric acid.
• a crosslinking agent such as zirconium acetate, ammonium zirconium carbonate, or the like
• a chelating agent such as boric acid
• the coating composition is preferably provided in an aqueous liquid vehicle, although small amounts of a water-soluble organic solvent may be present.
• the aqueous liquid vehicle will generally be water, although other nonorganic compounds that are either water soluble or water miscible may be included as well. It may on occasion be necessary to add a solubilizing compound during preparation of the coating composition so that the components dissolve in the aqueous liquid vehicle, e.g., an inorganic base such as ammonia and/or an organic amine.
• Suitable organic amines include lower alkyl-substituted amines such as methylamine, dimethylamine, ethylamine, and t ⁇ methylamine, as well as ethanolamine, diethanolamine, t ⁇ ethanolamine, and substituted ethanolamines, typically lower alkyl-substituted ethanolamines such as N-methyl and N,N-d ⁇ methyl ethanolamines, and morphohne
• Such compounds are also useful for bringing the pH into the desired range for basic formulations, and, if present, will generally represent not more than about 20 wt % of the composition, and in most cases will represent not more than about 10 wt % of the composition
• the textile coating compositions and printing methods of the invention can be used with any textile substrate amenable to use with such coating compositions and methods
• Suitable textile substrates for use with the present invention include textiles having natural, synthetic, cellulose-based, or non-cellulose-based fibers or any combination thereof
• Exemplary textile substrates include, but are not limited to, textiles having hydroxy group- containing fibers such as natural or regenerated cellulosic fibers (cotton, rayon, and the like), nitrogen group-contaming fibers such as polyacrylonit ⁇ le, natural or synthetic polyamides (including wool, silk, or nylon), and/or fibers having acid-modified polyester and polyamide groups
• the substrates may be additionally pre-treated or after-treated with resins or other substances compatible with the coating compositions and methods of the invention, and may be finished or unfinished
• the textile substrate may also be sized prior to application of the present coating compositions Alternatively, the present coating compositions may be incorporated into an external sizing process, so that sizing and
• the fibers of the textile substrate may be in any suitable form compatible with the selected printing process e g , loose yarns, or fabrics Fabrics are a convenient and preferred form
• the fibers may be blended with other fibers that are susceptible to treatment with a coating composition of the invention, or with fibers that may prove less susceptible to such treatment
• the process may also be used with leather, vinyl and other natural or synthetic materials
• Additional exemplary substrates for use in the invention include polyester films such as "MYLAR" flexible film, polysulfones, cellulose t ⁇ acetates, and the like Coated transparent films are also contemplated
• Coated textile substrates also referred to herein as "treated textile substrates," can be prepared by any of a number of conventional coating processes commonly employed in the art In general, the coating composition is applied to the textile substrate to provide a treated textile substrate in a manner that leaves the coating agent physically and chemically accessible to inks for reaction of the colorant-reactive coating agent within the colorant contained in the ink
• coating encompasses both a surface coating as well as a coating that has infiltrated the textile to some degree, so long as, in the latter case, the coating agent is still accessible to colorant for printing
• the textile coating composition is applied to a textile substrate to achieve a desired coating layer thickness and/or to achieve delivery of a desired amount of coating composition to the textile substrate
• the amount of coating composition used will vary with a number of factors, including, for example, the absorptive nature of the substrate, the ink to be used in printing on the substrate, the printing application to be used, and the like
• the coating composition is applied in an amount that results in a coating representing approximately 0 5 wt % to 20 wt % of the textile substrate after drying
• the coating is applied to at least one surface of the textile substrate, and may be applied to both a top and bottom surface of the substrate to facilitate printing on opposing substrate surfaces
• the coating composition may also be applied by saturating a textile substrate
• the coating compositions of the invention are applied by any suitable means, which may include continuous processes, application as a continuous film, padding, dipping, spraying, foam application, exhaust processes, or by using a rod, roll, flexopress, blade, or air-k
• the coating composition may be applied to the textile substrate as a pretreatment, simultaneously with printing, or as an after-treatment Preferably, the coating composition is applied to the substrate as a pretreatment, i e , prior to printing
• a pretreatment i e
• the coated textile substrate described herein possesses advantageous features.
• the coated textile substrate does not discolor or yellow.
• the coating composition is compatible with a variety of textiles.
• textile substrates coated with the coating compositions described herein react rapidly with applied aqueous colorants.
• the coated textile substrates of the invention can be printed on using any suitable inks and any suitable printing method, e.g., conventional methods of printing, digital printing (e.g., inkjet printing, including drop on-demand and continuous jet printing), and the like.
• aqueous inks are used in the preparation of a printed image on the treated textile substrates of the invention.
• Aqueous inks for use in preparing a printed image may be any suitable ink having a colorant, e.g., a pigment, dye, or stain, having one or more reactive groups suitable for reacting, either covalently or ionically, with a colorant-reactive component of a coating agent in the coating of the treated textile substrate.
• colorant-reactive component of the coating agent when the colorant-reactive component is an azetidinium group, the colorant has an anionic or nucleophihc group for reaction with the azetidinium group.
• the colorant-reactive component when the colorant-reactive component is a guanidino group, the colorant has an anionic group for reaction with the guanidino group.
• preferred colorants for use in printing on a textile substrate coated with an azetidinium-containing coating composition are those containing one or more nucleophiles, e.g.
• Preferred colorants for use in printing a treated textile substrate coated with a polyguanidine-containing coating composition are those containing an anionic group, e.g., having a carboxy, sulfonato, thiosulfonato, cyano, halo, or phosphonato group or the like.
• the inks used in conjunction with the textile coating compositions of the invention may be inkjet inks.
• Water-soluble colorants in the inkjet inks may be acid dyes, direct dyes, basic dyes or dispersive dyes; preferred dyes are described in U.S. Patent Nos. 5,425,805, 5,537,137, and 5,441,561.
• the selection of the aqueous based ink will depend upon the requirements of the specific application, such as desired surface tension, viscosity, drying time, the type of textile substrate upon which the ink is to be applied (printing medium), and the like.
• the aqueous liquid vehicle of inks suitable for use in the invention will generally be water, although other nonorganic compounds which are either water soluble or water miscible may be included as well.
• the colorant may be dissolved, dispersed or suspended in the aqueous liquid vehicle, and is present in an amount effective to provide the dried ink with the desired color and color intensity.
• the dye is contained in a carrier medium composed of ink and a water soluble organic solvent.
• representative solvents include polyhydridic alcohols such as polyethylene alcohol, diethylene glycol, propylene glycol, and the like. Additional solvents are simple alcohols such as ethanol, isopropanol and benzyl alcohol, and glycol ethers, e.g., ethylene glycol monomethyl ether, diethylene glycol monoethyl ether.
• Representative examples of water soluble organic solvents are described in U.S. Patent 5,085,698 and U.S. Patent No. 5,441,561.
• Preferred colorants contained in the inks useful with the invention are dyes, including azo or "direct” dyes as well as dyes containing acidic groups (e.g., carboxylate, phosphonate or sulfonate moieties), basic groups (e.g., unsubstituted amines or amines substituted with 1 or 2 alkyl, typically lower alkyl, groups), or both.
• suitable colorants include, but are not limited to, the following: Dispersol Blue Grains (Zeneca, Inc.), Duasyn Acid Blue (Hoechst Celanese), Duasyn Direct Turquoise Blue (Hoechst Celanese), Phthalocyanine blue (C.I.
• Dispersol Yellow D-7G 200 Grains (Zeneca, Inc.), Brilliant yellow (Hoechst Celanese), Pro-jet yellow 1 (Zeneca, Inc.), Pro-jet Fast Yellow 2 (Zeneca, Inc.), benzidine yellow (C.I. 21090 and C.I. 21100) and Hansa Yellow (C.I. 11680) as yellow colorants; organic dyes; and black materials such as carbon black, charcoal and other forms of finely divided carbon, iron oxide, zinc oxide, titanium dioxide, and the like.
• Specific and preferred black colorants include Acid Black 48 (Aldrich), Direct Black 58756 A (Crompton & Knowles), BPI Molecular Catalytic Gray (Brain Power), Fasday Cool Gray (Hunter Delator), Dispersol Navy XF Grains (Zeneca, Inc.), Dispersol Black CR-N Grains (Zeneca, Inc.), Dispersol Black XF Grains (Zeneca, Inc.), Disperse Black (BASF), Color Black FW18 (Degussa), Color Black FW200 (Degussa), Hostafine Black TS (Hoechst Celanese), Hostafine Black T (Hoechst Celanese), Duasyn Direct Black (Hoechst Celanese), Pro-jet Black 1 (Zeneca, Inc.) and Pro-jet Fast Black 2 (Zeneca, Inc.).
• the invention also features a printed, treated textile substrate produced using the methods and compositions described herein.
• the treated textile substrates of the invention can be printed using any suitable printing method, e.g., conventional methods of printing, digital printing, particularly inkjet printing, including drop on-demand printing and continuous jet printing, and the like.
• the treated textile substrates are printed by an inkjet printing method.
• the printing process involves applying an aqueous recording liquid to a treated textile substrate in an imagewise pattern.
• Inkjet printing processes are well known in the art; see, e.g., U.S. Pat. Nos. 4,601,777; 4,251,824; 4,410,899; 4,412,224; and 4,532,530.
• compositions of the invention make it possible to print the treated textile substrates of the invention using printing methods that are conventionally used in connection with cellulosic paper substrates.
• printing and/or copying process using dry or liquid electrophotographic-type developers such as electrophotographic processes, ionographic process, and the like, may be adapted for printing the treated textile substrates of the invention.
• the treated textile substrates of the invention can also be printed on using a process for generating images that involves generating an electrostatic latent image on an imaging member in an imaging apparatus, developing the latent image with a toner, and transferring the developed image to a treated textile substrate of the invention
• Electrophotographic processes are known in the art, see, e.g., U S Pat No 2,297,691
• Ionographic and electrographic processes are also well known in the art, see, e.g., U S Pat No 3,611,419, 3,564,556, 4,240,084, 4,569,584, 2,919,171, 4,524,371, 4,619,515, 4,463,363, 4,254,424, 4,538,163, 4,409,604, 4,408,214, 4,365,549, 4,267,556, 4,160,257, and 4,155,093
• the printing process using treated textiles does not require a separate curing step
• reaction of the colorant-reactive component of the coating agent in the coating composition with the colorant in the ink can occur at room temperature
• exposure of the printed, coated textile substrate to heat e.g., using conventional heat press processes
• the printed, coated textile substrates can be further treated using any compositions and processes that are compatible with the coating agents and coated textile substrates described herein
• the printed, treated textile substrates as described herein interact rapidly and, in most cases, non-reversibly with a number of aqueous based dyes, providing a versatile medium for use with a wide variety of aqueous dyes
• the printed, treated substrates are also water-resistant and bleed-resistant (as evidenced by small dot size measurements, i.e., less wicking action) and maintain a high degree of brightness for extended periods of time
• Printed images formed upon the treated textile substrate are also fast-drying.
• the coating composition can be used to prepare images with varying degree of gloss, depending upon variations in pigment
• Images printed upon a treated textile substrate of the type described herein can be analyzed for any of a number of representative features using standard analytical techniques to obtain measurements for optical density, water-fastness, chroma and hue (via LAB graphs), dot size, and the like
• substrates treated with a variety of coating compositions in accordance with the invention result in superior print images which are clear, durable, highly luminant, non-feathered, and water-resistant and/or water-fast.
• images printed on treated textile substrates according to the present invention are also detergent resistant and/or detergent-fast.
• the detergent to which the images are resistant include a variety of commercially available detergents, (e.g., anionic detergents, cationic detergents, non-ionic detergents, amphoteric detergents, etc.).
• Anionic detergents to which the printed, treated textile substrates are resistant include, but are not necessarily limited to, alkyl aryl sulfonates (e.g., linear alkyl benzene sulfonate), alkyl aryl condensates (e.g., DDB (dodecyl benzene)), long chain (fatty) alcohol sulfates (e.g., having a chain of 12 to 18 carbon atoms), olefin sulfates and sulfonates, alpha olefin sulfate and sulfonates, sulfate monoglycerides, sulphate ethers, sulfosuccinates, alkane sulfonates, phosphate esters, alkyl isothionates, and sucrose esters.
• alkyl aryl sulfonates e.g., linear alkyl benzene sulfonate
• ISP 937 polyvinylpyrrolidone-dimethylaminomethacrylate (ISP);
• PVOH polyvinyl alcohol (Airvol 523 S, Air Products);
• PVP polyvinyl pyrrolidone (Aldrich);
• Vantocil 3,12-diimino-2,4,l l,13-tetraazatetradecanediimidamide, 20% aqueous solution (Vantocil IB, Zeneca, Inc.).
• the following table summarizes exemplary textile coating compositions in accordance with the invention, wherein the coating agent is an azetidinium polymer.
• the coating agent is an azetidinium polymer.
• Each of the representative formulations was used to coat and/or saturate cotton and cotton/polyester blend fabrics, which were then printed on using an aqueous ink and an inkjet printer.
• the printed textile substrates so prepared were found to have the beneficial features described herein, i.e., with respect to bleeding, wicking and brightness of printed images, as well as water resistance and rub resistance.
• the following table summarizes exemplary textile coating compositions in accordance with the invention, wherein the coating agent is a polyguanidine or an azetidinium polymer, or wherein the coating agent comprises a mixture of a polyguanidine and an azetidinium polymer.
• the coating agent is a polyguanidine or an azetidinium polymer, or wherein the coating agent comprises a mixture of a polyguanidine and an azetidinium polymer.
• Each of the representative formulations was used to coat and/or saturate cotton and cotton/polyester blend fabrics, which were then printed on using an aqueous ink and an inkjet printer.
• the printed textile substrates so prepared were found to have the beneficial features described herein, i.e., with respect to bleeding, wicking and brightness of printed images, as well as water resistance and rub resistance.
• the treated fabrics were allowed to dry, and were then printed on using an aqueous ink and an inkjet printer.
• the printed fabrics pre-treated with the compositions of the invention were found to be water-fast and bleed-resistant, with the printed images of superior quality with respect to chroma and hue.

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