WO2000059732A1 - Composition de revetement contenant des microspheres et articles en contenant - Google Patents

Composition de revetement contenant des microspheres et articles en contenant Download PDF

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Publication number
WO2000059732A1
WO2000059732A1 PCT/US2000/009163 US0009163W WO0059732A1 WO 2000059732 A1 WO2000059732 A1 WO 2000059732A1 US 0009163 W US0009163 W US 0009163W WO 0059732 A1 WO0059732 A1 WO 0059732A1
Authority
WO
WIPO (PCT)
Prior art keywords
cyclodextrin
beads
article
coating
layer coating
Prior art date
Application number
PCT/US2000/009163
Other languages
English (en)
Inventor
Ronald Sinclair Nohr
John Gavin Mcdonald
Original Assignee
Kimberly-Clark Worldwide, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kimberly-Clark Worldwide, Inc. filed Critical Kimberly-Clark Worldwide, Inc.
Priority to AU64081/00A priority Critical patent/AU6408100A/en
Publication of WO2000059732A1 publication Critical patent/WO2000059732A1/fr

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Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/61—Additives non-macromolecular inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/66—Additives characterised by particle size
    • C09D7/69—Particle size larger than 1000 nm
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/70—Additives characterised by shape, e.g. fibres, flakes or microspheres
    • 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
    • B41M5/5218—Macromolecular coatings characterised by inorganic additives, e.g. pigments, clays
    • 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
    • B41M5/5245—Macromolecular coatings characterised by the use of polymers containing cationic or anionic groups, e.g. mordants
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls

Definitions

  • the present invention is directed to a coating composition for print media.
  • the present invention is further directed to improved print substrates having the coating composition thereon and methods of making the improved print substrates.
  • the improved print substrates substantially enhance the brightness and brilliance of colorants applied to the coating composition, especially compared to colorants applied to conventional coated or uncoated print media.
  • the present invention addresses the needs described above by providing a coating composition and an improved print substrate coated with one or more layers of the composition.
  • the coating composition contains unique microspheres having a refractive index of from about 1.9 to about 2.4.
  • the coating composition may further comprise a polymeric material, such as a polyvinyl alcohol, which interacts with the microspheres to enhance the coating properties.
  • Colorants applied to the improved print substrate exhibit exceptional brightness and brilliance compared to conventional print substrates.
  • the present invention provides a coating that is elastic and does not cause the substrate to curl when heat is applied.
  • the present invention is also directed to methods of making the composition and improved substrates described above. Superior color quality, print vibrancy, and colorant brilliance is achieved by combining the aforementioned improved substrates and any colorant composition, particularly ink jet inks.
  • the present invention is further directed to methods of providing a unique texture to a print substrate by applying one or more layers of the coating composition to the print substrate.
  • Fig. 1 depicts a "micro-cage" formed from beads, cyclodextrin, and a polymeric binder.
  • the present invention is directed to a coating composition for print media.
  • the present invention is also directed to improved print substrates comprising a base layer and one or more layers of the above coating composition on at least one surface of the base layer.
  • the improved substrates substantially enhance the brightness and brilliant of colorants applied to the coating composition on the substrate, especially compared to colorants applied to conventional coated or uncoated print media.
  • the present invention is further directed to methods of making the improved print substrates.
  • the coating composition of the present invention comprises microspheres, or beads, having a refractive index of from about 1.9 to about 2.4.
  • the beads are available from The Photographic Institute, Beijing, China, and comprise significant amounts (greater than about 1.0 weight percent) of titanium, barium, calcium and oxygen; minor amounts (less than about 1.0 weight percent) of aluminum, iron, strontium, zinc, and zirconium; and possibly minute amounts of sodium, tellurium, and other elements.
  • An electron microprobe analysis of a bead sample reveals the following bead composition as shown in Table 1 below.
  • the commercially available beads are desirably substantially spherical and have particle diameters ranging from about 2 microns to about 45 microns, although having a variety of sizes is not critical to the present invention.
  • the phrase "substantially spherical" is intended to encompass beads having a perfectly spherical shape, as well as, beads having an imperfect spherical shape, such as wherein the bead length may be slightly larger or smaller than the bead breath.
  • the commercially available beads are mechanically separated into samples having relatively narrow particle diameter ranges. For example, one sample comprises beads having a particle diameter range of about 27 microns to about 45 microns. Another sample comprises beads having a particle diameter range of about 2 microns to about 43 microns. Coating compositions of the present invention may be prepared using commercially available beads or select beads having a desired particle size or particle size range.
  • Sample 1 has a broad particle size distribution from about 1 micron to about 45 microns, while Sample 2 has a much narrower particle size distribution from about 25 microns to about 45 microns.
  • the equivalent circular diameter area equivalent diameter
  • the coating composition of the present invention optionally further contains one or more polymeric binders.
  • Suitable binder materials include, but are not limited to, naturally-occurring polymers, synthetically-modified naturally- occurring polymers or synthetic polymers as exemplified in Water-Soluble Polymers, C. L. McCormick, J. Bock, and D. N. Schulz, in Vol. 17, Encyclopedia of Polymer Science and
  • the binder comprises one or more of the following polymers: polyvinylpyrrolidone (PVP), polyvinylalcohol (PVOH), polyhydroxyethyl acrylate, polyhydroxyethyl methacrylate, polyacrylamide, polymethacrylamide, polyethylene glycol, carboxymethyl cellulose, sodium carboxymethyl cellulose, hydroxypropyl cellulose, hydroxyethyl cellulose, polyacrylic acid and polyacrylic acid salts, polymethacrylic acid and polymethacrylic acid salts, polyvinylsulfonate and polyvinylsulfonate salts, poly-2- acrylamido-2-methylpropanesulfonic acid and poly-2-acrylamido- 2-methylpropanesulfonic acid salts, polyacryloxy- trimethylammonium chloride, polymethacryloxytrimethyl- ammonium chloride, and polydiallyldi
  • PVP polyvinylpyrrolidone
  • PVH polyvinylalcohol
  • the binder comprises sodium carboxymethyl cellulose, polyvinylpyrrolidone (PVP), polyvinylalcohol (PVOH) or a combination thereof. Even more desirably, the binder comprises polyvinylalcohol (PVOH).
  • the coating composition may optionally contain one or more cyclodextrins.
  • Suitable cyclodextrins include, but are not limited to, -cyclodextrin, ⁇ -cyclodextrin, ⁇ -cyclodextrin, ⁇ - cyclodextrin, hydroxypropyl ⁇ -cyclodextrin, hydroxyethyl ⁇ - cyclodextrin, hydroxyethyl ⁇ cyclodextrin, carboxymethyl ⁇ cyclodextrin, carboxymethyl ⁇ cyclodextrin, carboxymethyl ⁇ cyclodextrin, octyl succinated ⁇ cyclodextrin, octyl succinated ⁇ cyclodextrin, octyl succinated ⁇ cyclodextrin and sulfated ⁇ cyclodextrin and sulfated ⁇ -cyclodextrin (C
  • the cyclodextrin comprises ⁇ -cyclodextrin ( ⁇ -CD), ⁇ -cyclodextrin ( ⁇ -CD), hydroxyethyl ⁇ -cyclodextrin (he- ⁇ -CD), hydroxypropyl ⁇ - cyclodextrin (hp- ⁇ -CD), or a combination thereof. More desirably, the cyclodextrin comprises hydroxyethyl ⁇ - cyclodextrin (he- ⁇ -CD).
  • the coating composition may contain from about 1 to about 30 parts by weight (pbw) beads, from about 10 to about 50 pbw polymeric binder, optionally from about 0 to about 300 pbw cyclodextrin and from about 100 to about 500 pbw water. In some embodiments, the coating composition contains from about 5 to about 10 parts by weight (pbw) beads, from about 10 to about 20 pbw polymeric binder, optionally from about 100 to about 200 pbw cyclodextrin and from about 100 to about 300 pbw water. The coating composition may contain more beads; however, significant colorant brightness and brilliance results from as little as 1 pbw beads.
  • the coating composition of the present invention may also contain additional components.
  • additional components include, but are not limited to, charge carriers; stabilizers against thermal oxidation; viscoelastic properties modifiers; cross-Unking agents; plasticizers; charge control additives such as a quaternary ammonium salt; flow control additives such as hydrophobic silica, zinc stearate, calcium stearate, lithium stearate, polyvinylstearate, and polyethylene powders; fillers such as calcium carbonate, clay and talc; surfactants; detackifiers; chelating agents; and TINUVIN® compounds; among other additives used by those having ordinary skill in the art.
  • Desirable surfactants include, but are not limited to, Cl2 to Cl8 surfactants such as cetyl trimethyl ammonium chloride and carboxymethylamylose, and other surfactants such as Triton X-100 and SURFYNOL® 420.
  • TINUVIN® compounds are a class of compounds produced by Ciba-Geigy Corporation, which includes benzophenones, benzotriazoles and hindered amines.
  • Desirable TINUVIN® compounds include, but are not limited to, 2-(2 , -hydroxy-3'- 1 sec-butyl-5'-tert-butylphenyl)- benzo-triazole, poly-(N- ⁇ -hydroxyethyl-2,2,6,6-tetramethyl-4- hydroxy-piperidyl succinate and 2-(2'-hydroxy-3',5'- dit-? ⁇ butylphenyl)-5-chloro-benzotriazole.
  • the identities and amounts of such additional components in the colored composition are well known to one of ordinary skill in the art.
  • one or more of the above additives are present in the coating composition in an amount of from about 1 to 14 weight percent based on the total weight of the coating composition.
  • each layer of the multi-layer coating may contain one or more coating components as described above.
  • each layer of coating comprises from 0 to about 30 parts by weight (pbw) beads, from about 10 to about 50 pbw polymeric binder, and from 0 to about 300 pbw cyclodextrin. It is believed that the cyclodextrin "wets” or adheres to the surface of the beads. Further, it is believed that the polymeric binder forms one or more "chains” or “springs” between adjacent beads via the bead surface and/or the cyclodextrin on the bead surface. The result of the association of beads, cyclodextrin and polymeric binder is a "micro-cage" structure within a coating layer.
  • Fig. 1 depicts a micro-cage structure 10 formed by beads
  • the micro-cage structure 10 provides a cage for a dye molecule 14, such that the dye molecule has less tendency to (1) aggregate with other dye molecules and (2) photodegradate due to singlet oxygen interaction or other photodecolorization mechanisms.
  • the cyclodextrin and a polymeric material may be selected from the materials described above.
  • the cyclodextrin comprises ⁇ -cyclodextrin, ⁇ - cyclodextrin, hydroxyethyl ⁇ -cyclodextrin, hydroxypropyl ⁇ - cyclodextrin, or a combination thereof.
  • the polymeric material is desirably sodium carboxymethylcellulose, polyvinylpyrrolidone (PVP), polyvinyl alcohol (PVOH), or a combination thereof.
  • the polymeric binder comprises polyvinyl alcohol.
  • the coating comprises two or more coating layers comprising beads, cyclodextrin, and a polyvinyl alcohol.
  • the molecular weight of the polyvinyl alcohol varies from one layer to another such that the chain length or spring length between beads changes from one layer to another.
  • the polyvinyl alcohol may be chosen such that the chain length decreases from an outermost coating layer to an innermost coating layer, wherein the innermost coating layer is next to the base substrate.
  • the polyvinyl alcohol may be chosen such that the chain length or spring length of the micro-cage increases from the outermost layer to the innermost layer.
  • the coating may comprise multiple layers, wherein the layers differ from one another by one or more of the following features: amount of coating component; type of beads (size distribution, etc.); type of cyclodextrin; type of polymeric material; molecular weight of polymeric material; and filler material.
  • the number of coating layers may vary depending upon a number of factors including, but not limited to, the thickness of each coating layer, the substrate, and the particular application. Desirably, the number of coating layers ranges from about 2 to about 10 layers. However, it should be noted that any number of coating layers may be used for a given substrate.
  • the coating composition may be applied to a variety of substrates to form improved print substrates of the present invention.
  • Suitable substrates to which the coating composition may be applied include, but are not limited to, paper, wood, a wood product or composite, woven fabric, nonwoven fabric, textile, plastic, glass, metal, foil or any other substrate that would benefit from having a coating composition thereon.
  • Plastic substrates include, but are not limited to, a plastic film, a plastic nonwoven web, or a plastic woven web.
  • a preferred substrate is paper. Any existing or future type of paper or paper products may be used in the present invention. Examples of paper or paper products include, but not limited to, printing and writing papers, packaging and industrial papers, paperboard, and tissue papers.
  • printing and writing papers include, but are not limited to the following: wood-free coated papers; wood-containing coated papers; wood- free uncoated papers such as bond and writing paper, envelopes, offset and opaque circular, carbonless, tablet, forms bond, ledger, mimeograph, and manifold, duplication, fax base, thermal base, technical papers, supercalandered, and specialty papers; uncoated wood-containing papers such as supercalandered, directory, specialty converting and publishing; bristols such as coated bristols, uncoated bleached bristols, tag, coated tag papers, file folders, and tabulating; and thin papers such as cigarette paper, bible paper, lightweight paper, lightweight specialty, manifold, cotton fiber papers, and specialty thin papers.
  • packaging and industrial papers include, but are not limited to the following: breached Kraft paper such as grocers bags, shipping sacks, wrapping paper, and converting paper; unbleached Kraft paper such as grocers bags, shipping sacks converting paper, wrapping paper, and envelopes.
  • paperboard examples include, but are not limited to the following: containerboard such as unbleached linerboard, bleached linerboard, corrugated medium, and chip and filler board; folding boxboard/folding cartonboard such as solid bleached sulfite, bleached and unbleached bristols, coated recycled board, coated unbleached Kraft, milk, cup, plate and foodservice stock (coated or uncoated), and folding board; gypsum wallboard; and tube/can and drum paperboard.
  • tissue papers include, but are not limited to, sanitary tissues such as bathroom tissue, facial tissue, napkins, toweling, wiper stock, and other sanitary tissue papers.
  • the base layer of the improved print substrate may comprise one or more of the above-mentioned layers.
  • the base layer is a coated or uncoated fiber-containing substrate such as Photoglossy Base, Presentation Matte Photobase, and High Quality Matte papers and Wetstrength Media; a film such as White Opaque Films (e.g. KIMDURA®, K-C), Clears Films (e.g. MELINEX®, ICI) Backlit Films, and Vinyl; or a nonwoven such as TYVEK®.
  • the base layer is a coated or uncoated paper.
  • the base layer is a coated paper comprising a cellulose sheet coated with a polymeric film, such as polyethylene.
  • the coating composition is coated onto the base layer by any conventional coating method including, but not limited to, rod coating, dip coating, spray coating, gravure coating, knife coating, slot coating, and roller coating.
  • the coating composition is applied to the base layer by a process wherein the coating composition is transferred from a bath onto a roller which extends into the bath, and onto at least one surface of the base layer.
  • the same or a different coating may be provided on the same or an opposite side of the base layer.
  • the coated base layer then passes under or over a rod, which meters excess coating from the base layer. Once coated, the base layer is dried in a conventional oven or by any other means known to those of ordinary skill in the art.
  • the amount of coating composition applied to a surface of the base layer may vary depending upon the type of base layer used and the application of the final product.
  • a base layer in the form of an uncoated paper may require more coating composition than a base layer in the form of a coated paper or film due to the increased porosity of the base layer.
  • the coating composition is applied to a base layer to produce a coating weight of from about 3.0 to about 60.0 g/m 2 of base layer surface area.
  • the coating weight is from about 9.0 to about 23.0 g/m 2 of base layer surface area. In other embodiments, the coating weight is from about
  • the thickness of the coating composition may also vary depending upon the type of base layer used and the application of the final product. Desirably, the coating composition has a thickness of about 0.1 to about 5.0 mil. In some embodiments, the coating composition has a thickness of about 0.5 to about 2.0 mil. In other embodiments, the coating composition has a thickness of about 1.0 to about 1.5 mil.
  • a substrate having a textured printable surface is produced by coating one or more layers of the above-described coating composition onto a surface of the substrate.
  • Suitable substrates include any of the substrates mentioned above. Examples of applications for using the textured substrates include, but are not limited to, a canvas for oil painting, wallpaper, sheetrock, and wood. Desirably, the coating thickness is up to about 5.0 mil. depending on the porosity of the substrate.
  • a coating composition was formulated by mixing 0.1 g of beads having a composition as shown in Table 1 above and 1.0 g of a 10% solution of polyvinylalcohol (PVOH) (AIRVOL® 523,
  • Magenta ink was applied to the coated sheet. Magenta ink was also applied to a second uncoated sheet or paper. The magenta ink on the coated paper was noticeably brighter than the magenta ink on the uncoated paper.
  • a coating composition was formulated by mixing 0.1 g of ⁇ O2 powder ( ⁇ TANDIOXID P25, DEGUSSA) and 1.0 g of a 10% solution of polyvinylalcohol (PVOH) (AIRVOL® 523, Air Products). After stirring for 5 minutes on a hot plate, the solution thickened but did not result in an elastic rubber-like material.
  • ⁇ O2 powder ⁇ TANDIOXID P25, DEGUSSA
  • PVOH polyvinylalcohol
  • a coating composition was formulated by mixing 0.1 g of beads, 1.0 g of a 10% solution of polyvinylalcohol (AIRVOL® 523, Air Products), 1.0 g of ⁇ -cyclodextrin, ⁇ -CD, (Cerestar) and 1.0 g of water. The components were stirred in a beaker at room temperature for five minutes, forming an elastic rubber-like material. A sample of the elastic material was applied with a No. 40 rod onto a sheet of glossy paper and dried to form a highly reflective coating having a textured surface.
  • AIRVOL® 523 10% solution of polyvinylalcohol
  • ⁇ -CD ⁇ -cyclodextrin
  • a coating composition was formulated by mixing 0.5 g of beads, 3.0 g of a 10% solution of polyvinylalcohol (AIRVOL®
  • a coating composition was formulated by mixing 0.3 g of beads, 1.0 g of a 10% solution of polyvinylalcohol (AIRVOL® 523, Air Products), 1.0 g of ⁇ -cyclodextrin, ⁇ -CD, (Cerestar) and 1.0 g of water. The components were stirred in a beaker at room temperature for five minutes, forming an elastic rubber-like material. A sample of the elastic material was stored at room temperature for approximately 10 minutes, forming a latex rubber material.
  • a coating composition was formulated by mixing 0.11 g of beads, 1.0 g of a 10% solution of polyvinylalcohol (AIRVOL® 523, Air Products), 1.0 g of hydroxyethyl ⁇ - cyclodextrin, he- ⁇ -CD, (Cerestar) and 1.0 g of water.
  • the PVOH, he- ⁇ -CD and water were stirred in a beaker at room temperature for five minutes.
  • the beads were added to the mixture, which was stirred for three minutes and heated on a hot plate for five minutes. Upon cooling, the mixture formed a very elastic rubber-like material.
  • a sample of the elastic material was applied with a No. 7 rod onto a sheet of glossy paper and dried to form a highly reflective coating having a smooth surface.
  • a coating composition was formulated by mixing 0.05 g of beads, 1.0 g of a 10% solution of polyvinylalcohol
  • a coating composition was formulated by mixing 0.05 g of beads, 1.0 g of a 10% solution of polyvinylalcohol (AIRVOL® 523, Air Products), 3.0 g of hydroxyethyl ⁇ - cyclodextrin, he- ⁇ -CD, (Cerestar) and 1.0 g of water.
  • the PVOH, he- ⁇ -CD and water were stirred in a beaker at room temperature for five minutes.
  • the beads were slowly added to the mixture, which was stirred for three minutes and heated on a hot plate for five minutes. Upon cooling, the mixture thickened and had less stretch than in Example 7.
  • Three coating compositions were formulated by mixing 0.05 grams of beads, 1.0 grams of a 10% solution of polyvinyl alcohol, 3.0 grams of hydroxyethyl ⁇ -cyclodextrin, he- ⁇ -CD,
  • AIRVOL® 523 Air Products
  • AIRVOL® 540 Air Products
  • AIRVOL® 205 Air Products
  • PVOH, he- ⁇ -CD and water were stirred in a beaker at room temperature for five minutes.
  • the beads were slowly added to each mixture, which was stirred for three minutes and heated on a hot plate for five minutes.
  • a first coating of the first coating composition was applied with a No. 40 rod onto a sheet of glossy paper and dried to form a first layer of coating material on the paper.
  • Second and third layers were subsequently applied onto the first layer of coating material to form a three-layered coating on the glossy paper.
  • Ink jet inks were printed on the coated substrate.
  • the printed substrate exhibited superior color, brightness, and colorfastness.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Nanotechnology (AREA)
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Abstract

La présente invention concerne une composition de revêtement pour supports imprimés. L'invention concerne également des substrats imprimés améliorés revêtus d'une ou plusieurs couches de la composition de revêtement, et des procédés de fabrication de ces substrats imprimés améliorés. Les substrats imprimés améliorés favorisent sensiblement l'éclat et la brillance des colorants appliqués à la composition de revêtement, en particulier si l'on compare avec les colorants appliqués aux supports imprimés classiques revêtus ou non revêtus.
PCT/US2000/009163 1999-04-07 2000-04-07 Composition de revetement contenant des microspheres et articles en contenant WO2000059732A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU64081/00A AU6408100A (en) 1999-04-07 2000-04-07 Coating composition containing beads and articles of manufact ure containing the same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12809999P 1999-04-07 1999-04-07
US60/128,099 1999-04-07

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WO2000059732A1 true WO2000059732A1 (fr) 2000-10-12

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