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MXPA00007113A - Coating composition containing beads of high refractive index - Google Patents

Coating composition containing beads of high refractive index

Info

Publication number
MXPA00007113A
MXPA00007113A MXPA/A/2000/007113A MXPA00007113A MXPA00007113A MX PA00007113 A MXPA00007113 A MX PA00007113A MX PA00007113 A MXPA00007113 A MX PA00007113A MX PA00007113 A MXPA00007113 A MX PA00007113A
Authority
MX
Mexico
Prior art keywords
cyclodextrin
clause
coating composition
article
weight
Prior art date
Application number
MXPA/A/2000/007113A
Other languages
Spanish (es)
Inventor
Ronald Sinclair Nohr
John Gavin Macdonald
Original Assignee
Kimberlyclark Worlwide Inc
John Gavin Macdonald
Ronald Sinclair Nohr
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 Kimberlyclark Worlwide Inc, John Gavin Macdonald, Ronald Sinclair Nohr filed Critical Kimberlyclark Worlwide Inc
Publication of MXPA00007113A publication Critical patent/MXPA00007113A/en

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Abstract

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.

Description

RECOBRIDORA COMPOSITION CONTAINING DB ACCOUNTS REFRINGENTE ALTO INDEX Technical Field The present invention is directed to a coating composition for printing media. The present invention is further directed to improved printing substrates having the coating compositions thereon and methods for making the printing substrates improved. Improved printing substrates essentially increase the brilliance and brightness of the colorants applied to the coating composition, especially in comparison to colorants applied to uncoated printing media coated with conventional media.
Background of the Invention The influence of a substrate on the brilliance and the coloring glow can be extremely important. Conventional printing substrates typically contain filler materials and / or surface coatings in order to improve the brilliance and brightness of the colorants applied thereto. Even though many attempts have been made to make an improvement to the brilliance or brilliance of the dyes, the attempts have resulted in less than acceptable color quality.
There is a need for the compositions methods, which are capable of increasing brilliance and the glare of a wide variety of dye especially of the magenta dyes. There is also a need for improved substrates, which are able to operate a superior color quality by increasing the brightness and brightness of the colors applied to them.
Synthesis of the Invention The present invention relates to the needs described above by providing a coating composition and an improved printing substrate coated by the composition. The coating composition contains unique hollow microspheres that have a refractive index from about d 1.9 to about 2.4. The colors applied to the enhanced printing substrate exhibit exceptional brilliance and brightness compared to conventional print substrates. In addition, the present invention provides a coating that is elastic and does not cause the substrate to flow when heat is applied.
The present invention also addresses methods for making the composition and the perforated substrates described above. The superior color quality, the vibrantness of printing and the brightness of the dye are achieved by combining the above-mentioned improved substrates with any coloring composition, particularly the ink-jet inks.
These and other features and advantages of the present invention will become apparent after a review of the following detailed description of the embodiments described.
Detailed description of the invention The present invention is directed to a resurfacing composition for printing media. The present invention is also directed to improving printing substrates comprising a base layer and the coating composition mentioned above on at least one surface of the base cap. The improved substrates essentially increase the brilliance and the brightness of the colorants applied to a coating composition on the substrate, especially in comparison to dyes applied to conventional coated or uncoated printing media. The present invention is further directed to improving the printing substrates having the coating compositions mentioned above on them and to methods for making the printing substrates improved.
The coating composition of the present invention comprises hollow microspheres or beads having a refractive index of about 1.9 to about 2.4. The accounts are available from The Photografic Institute, Beijin China, and comprise significant amounts (greater than 1.0 percent by weight) of titanium, barium, calcium and oxygen; smaller amounts (less than about 1.0 percent by weight) of aluminum, iron, strontium, zinc, zirconium; possibly tiny amounts of sodium, tellurium from other elements. An electronic microprobe analysis of an account sample reveals the following account composition co shown in Table 1 given below.
TABLE 1 Commercially available beads are essentially spherical desirably and have particle diameters ranging from about 2 microns to about 45 microns, when having a variety of sizes is not critical to the present invention. As used herein, the "essentially spherical" frame is intended to encompass beads having a perfect spherical shape as well as beads having an imperfect spherical shape, such as when the length counts may be slightly larger or smaller than the width of the bill. . In one embodiment of the present invention, commercially available beads are mechanically separated into samples having relatively narrow particle diameter ranges. For example, a sample purchases accounts that have a particle diameter range of around 27 to about 45 microns. Another sample comprises that it has a particle diameter range of about 2 about 43 microns. The coating compositions of the present invention can be prepared using commercially available beads or selected beads having the desired particle size or particle size range.
The image analysis of two account samples gives below. All units are in microns.
Sample 1 Sample 2 As shown by the data mentioned above, sample 1 has a broad particle size distribution d from about 1 to about 45 microns, while sample 2 has a much narrower particle size distribution from about 25 to around 45 micras. In both samples, the equivalent circular diameter (diametric equivalent of area) is very close to the length and width of the particle indicating that the beads are almost perfectly spherical particles.
The cover composition of the present invention optionally further contains one or more polymeric binders such binders include, but are not limited to naturally occurring polymers, polymers that occur naturally synthetically modified or synthetic polymers as exemplified by polymers soluble in ag of CL McCor ic, J. Bock and D.N. Schulz in Volume 1"Encyclopedia of Polymer Science and Engineering" by Jo Wiley and Sons, Publicists 1989, pages 730-84. Desirably the binder comprises one or more of the following polymer polyvinylpyrrolidone (PVP), polyvinylalcohol (PVOH polyhydroxyethylacrylate, polyhydroxyethyl ethacrylate polyacrylamide, polymethacrylamide, polyethylene glycol carboxymethylcellulose, carboxymethylcellulose of sodium hydroxypropyl cellulose, hydroxyethyl cellulose, polyacryl acid and salts of polyacrylic acid, polymethacrylic acid and salts polymethacrylic acid, polyvinylsulfonate and salts of polyvinyl sulfonate, poly-2-acrylamido-2-methyl propanesulfonic acid poly-2-acrylamido-2-salts of methyl propanesulfonic acid polyacrylohydroxytriyl amylammonium chloride, chloride po 1 imet acr i lox itr ime ti 1 ammonium and polydiallyltrimethylammonium chloride d .. Desirably, the binder comprises sodium carboxymethylcellulose, polyvinylpyrrolidone (PVP) polyvinylalcohol (PVOH) or combinations thereof.Marably, the binder comprises polyvinylalcohol (PVOH) The coating composition may optionally contain one or more ciciodextrins. Suitable cyclodextrins include, but are not limited to, α-cyclodextrin, cyclodextrin, 7-cyclodextrin, β-cyclodextrin, hydroxypropyl β-cyclodextrin, hydroxyethyl / S-cyclodextrin, hydroxyethyl cyclodextrin, carboxymethyl to cyclodextrin, carboxymethyl cyclodextrin, carboxymethyl 7 cyclodextrin, octyl succinate cyclodextrin, octyl β cyclodextrin succinate octyl 7 succinate cyclodextrin and sulphated β cyclodextrin 7 sulfated cyclodextrin (Cerestar USA Incorporated, Hammon Indiana). Desirably, the cyclodextrin comprises cyclodextrin (β-CO), 7-cyclodextrin (7-CD), hydroxyethyl (cyclodextrin (he-j8-CD), hydroxypropyl j8-cyclodextrin (hp-CD), or a combination thereof. Desirably, the cyclodextrin comprises j8-cyclodextrin hydroxyethyl (he-J-CD) In the present invention, the coating composition can contain beads from about 1 to about 30 parts by weight (pbw), from about 10 to about 50 parts by weight pbw / polymeric binder, optionally from about 0 to about of 300 parts by weight pbw d cyclodextrin and from about 100 to 500 parts by wt weight of water. In some embodiments, the coating composition contains beads of from about 5 to about 10 parts by weight (pbw), from about 10 to about 20 parts by weight pbw of polymeric binder, optionally from about 100 to about of 200 parts by weight pbw cyclodextrin and from about 100 to about 3 parts by weight pbw of water. The coating composition may contain more beads; however, the significant brightness and respland of color result from as little as part-weight accounts pbw.
In addition to the polymeric binder and cyclodextrin, the coating compositions of the present invention may also contain additional components. Examples of such additional components include, but are not limited to, charge carriers; to stabilizers against thermal oxidation; to the modifiers viscoelastic properties; Cross linking agents to plasticizers; to charge control additives, such as the quaternary ammonium salt; to flow control additives such as hydrophobic silica, calcium stearate, stearate, lithium stearate, polyvinyl stearate and polyethylene powders; to the fillers such calcium carbonate, clay and talc; to surfactants; to the binder; to chelating agents and TINUVIN® compounds; among other additives used by those with ordinary skill in the art. The charge carriers are known by those who have ordinary skill in the art and are typically polymer coated metal particles. Desirable surfactants include, but are not limited to C12 to Clg surfactants such as trimethyl ammonium cet chloride and carboxymethylamilose, and other surfactants such as Triton X-100 and SURFYNOL® 420 compounds. TINUVIN® compounds are a class of compounds produced by Ciba-Gei Corporation, which include benzophenones, benzotriaols and hindered amines. Desirable TINUVIN® compounds include, but are not limited to, 2- (2'-hydrox 3 '-sec-butyl-5' -tert-butylphenyl) -benzo-triazole, poly (N-hydroxyethyl-2,2,6, 6-tetramethyl-4-hydroxy-piperidyl succinic acid and 2- (2'-hydroxy-3'-5'-ditertbutylphenyl) -5-chloro-benzotriazo The identities and the amounts of such additional components in the colored composition are well known by one with ordinary skill in the art Typically, one or more of the above-mentioned additives are present in the coating composition in an amount of from about 1 to 14 wt% based on the total weight of the coating composition.
The coating composition can be applied to a variety of substrates to form the improved printing substrates of the present invention, suitable substrates to which the coating composition can be applied include but are not limited to paper, wood, a wood product or a composite, a woven fabric, a nonwoven fabric, textile, plastic, glass, metal, needle or other substrate that may benefit from having a coating composition thereon. Plastic substrates include, but are not limited to, a plastic film, a non-woven plastic fabric, or a non-woven plastic fabric. 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 pap products include, but are not limited to, printing and writing papers, industrial packaging papers, cardboard and tissue paper. Examples of print writing papers include but are not limited to the following: wood-free coated paper; coated papers containing wood; uncoated papers free of wood, such as bond paper and writing paper; envelopes, without carbon, circular opa and offset, bond forms, ledger, mimeograph and duplication, multiple, fax, thermal base, supercalendered technical papers and specialty papers; papers that contain uncoated wood, such as the super calendered, directory, specialty, dispersion and publication; l bristol papers such as bristol coated, bristo bleached uncoated, labels, coated label papers, file folders and tabulators; and thin paper such as cigarette paper, bible paper, lightweight paper, specialty lightweight, multiple, cotton fiber papers and thin specialty papers.
Examples of industrial packaging papers include but are not limited to the following: kraft paper, t as supermarket bags, shipping bags, wrapping paper and conversion paper; Unbleached kraft paper such as co-bags, shopping bags, conversion paper, wrapping pap and envelopes. Examples of the carton include, but are limited to the following cartons such as unbleached liner board, bleached liner board, corrugated board and filler board and chips; Folded carton folded box such as solid bleached sulphite. Brist bleached and unbleached, coated recycled cardboard, unbleached coated kraft, milk, feeder, plate food service (coated and coated) and foldable cardboard; plasterboard; and cardboard tube / can and drum. Examples of tissue paper include, but are not limited to, sanitary tissues such as bathroom tissue, facial tissue, napkins, towels, and the supply of cleaning cloth and other tissue paper.
The base layer of the improved printed substrate may comprise one or more of the above mentioned layers. Desirably, the base layer is a substrate containing fibr coated or uncoated such as the Photoglossy base, the photobase of presentation matte and the matte papers. of high quality and the means of wet strength; a film such as opaque white films (KIMDURA®, K-C) transparent film (for example, MELINEX®, ICI), Backli vinyl films; and a nonwoven such as TYVEK®. More desirably, the base layer is a coated or uncoated paper. Desirably the base layer is a coated paper comprising a cellulose sheet coated with a polymeric film such as polyethylene. The coating composition is coated on the base layer by any conventional coating method including, but not limited to, rod coating, embed coating, spray coating, gravure coating, knife coating, slot coating, and coating. of roller. Desirably, the coating composition is applied to the base layer by a process in which the coating composition is transferred from a roll bath extending into the bath, and on at least one surface of the base layer. Optionally, the same or different coating can be provided on it on an opposite side of the base layer. The coating base layer then passes down or on a rod, which measures excess coating from the base layer. One coated the base layer dried in a conventional oven or p means any other means known to those skilled in the art.
The amount of coating composition applied to a surface of the base layer may vary depending on the type of base layer used and the application of the end product. For example, a base layer in the form of a coated paper may require more coating composition than a coating. layer of b in the form of a coated paper or film due to the increased porosity of the base layer. Desirably, the coating composition is applied to the layer to produce a coated p from about 3.0 to about 60.0 g / m2 base layer surface area. In some embodiments the weight of the coating is from about 9.0 to about 23.0 g / m2 of the base layer surface area. In other embodiments, the coating weight is from about 15.0 to about 20.0 g / m2 of the ac acreage surface area.
The thickness of the coating composition can also vary depending on the type of the 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 mils. In some embodiments, coating composition has a thickness of about 0.5 about 2.0 mils. In other embodiments, the coating composition has a thickness of about 1.0 about 1.5 mils.
The present invention is further described by the following examples. Such examples, however, should not be considered as limiting in any other form or spirit or scope of the present invention. In the examples all parts are parts by weight unless declared otherwise.
EXAMPLE 1 Preparation of Account Composition / Polyvinylalcohol A coating composition was formed by mixing 0.1 grams of beads having a composition co shown in Table 1 given above and 1.0 g of 10% polyvinylalcohol solution (PVOH) (AIRVOL® 523, Air Products After shaking for 5 minutes on a hot plate, solution was converted to an elastic rubber type material The material was able to be stretched approximately 3 feet s.The elastic material was coated on a sheet of paper and dried in the open air.
The magenta ink was applied to the coated sheet. The magenta ink was also applied to a second sheet or uncoated paper. The magenta ink on the coated pap was noticeably brighter than the magenta ink on the uncoated paper.
COMPARATIVE EXAMPLE 2 Preparation of the Composition of Ti02 / polyvinylalcohol For a comparison with the coating composition of Example 1, a coating composition was formulated by mixing 0.1 g of Ti02 powder (TITA P25 DIOXIDE, DEGUSSA) and 1.0 grams of a 10% polyvinyl alcohol (PVOH) solution (AIRVOL) ® 523 from Air Products). After stirring for 5 minutes on a hot plate the solution thick but did not result in an elastic rubber type material EXAMPLE 3 Preparation of an account composition / polyvinylalcohol / cyclodextrin A coating composition was formulated by mixing 0.1 grams of beads, 1.0 grams of a solution of 1 of polyvinyl alcohol (AIRVOL® 523, from Air Products), 1.0 g of cyclodextrin, 7CD, (Cerestar) and 1.0 grams of water. The composition was stirred in a beaker at room temperature for 5 minutes, forming a material of the elastic type. A sample of the elastic material was applied by a No. 40 rod on a sheet of glossy paper and it was formed to form a highly reflective coating having a textured surface.
EXAMPLE 4 Preparation of counting composition / polyvinylalcohol A coating composition was formulated by mixing 0.5 grams of beads, 3.0 grams on a 10% polyvinylalcohol solution (AIRVOL® 523, from Air Products) and 1 gram of water. The components were stirred in a picu glass at room temperature for 5 minutes, forming an elastic rubber type material. A sample of the elastic material f stored at room temperature for approximately minutes, forming a transparent rubber material.
EXAMPLE 5 Preparation of counting composition / polyvinylalcohol / cyclodextrin A coating composition was formulated by mixing 0.3 grams of beads, 1.0 grams of a 10% polyvinylalcohol solution (AIRVOL® 523, from Air Products) or 7 grams of cyclodextrin, 7CD, (Cerestar) and 1.0 grams of water. The components were stirred in a beaker at room temperature for 5 minutes, formed an elastic hul type material. A sample of the elastic material was stored at room temperature for approximately 10 minutes, forming a rubber latex material.
EXAMPLE 6 Preparation of an account composition / polyvinylalcohol / cyclodextrin A coating composition was formulated by mixing 0.11 beads, 1.0 g of a solution of 10 polyvinylalcohol (AIRVOL® 523, from Air Products), 1.0 gram hydroxyethyl j8-cyclodextrin, e-ß-CO (Cerestar) and 1.0 g of a The polyvinylalcohol, he-3-CD and water were shaken in a beaker at room temperature for 5 minutes. The cueds were added to the mixture, which was stirred for 3 minutes, heated on a hot plate for 5 minutes. With cooling the mixture formed an elastic rubber type material. A sample of the elastic material was applied with No. 7 rod on a sheet of glossy paper and dried to form a highly reflective coating having a smooth surface.
EXAMPLE 7 Preparation of an account composition / polyvinylalcohol cyclodextrin An average coating composition was formulated by mixing 0.5 grams of beads, 1.0 grams of a 10% polyvinylalcohol solution (AIRVOL® 523, from Air Products), grams of hydroxyethyl S-cyclodextrin, he-ß-CD, (Cerestar) and grams of water. Polyvinyl alcohol, he-0-CD and water were stirred in a vessel at room temperature for minutes. The beads were added slowly to the mixture, which was stirred for 3 minutes and heated on a hot plate for 5 minutes. With the cooling, the mixture thickened but did not form an elastic rubber type material that had remarkable stretch, most likely due to the higher concentration of cyclodextrin.
EXAMPLE 8 Preparation of an account composition / polyvinylalcohol / cyclodextrin A coating composition was formulated by mixing 0.5 grams of beads, 1.0 grams of a 10% polyvinyl alcohol solution (AIRVOL® 523, from Air Products), 3. grams of hydroxyethyl / S-cyclodextrin, he - "- CD, (Cerestar ) and 1. grams of water.The polyvinylalcohol, the he-? - CD and the water were stirred at room temperature in a picudo glass per minute.The beads were added slowly to the mixture, which was stirred for 3 minutes and it was heated on a hot plate for 5 minutes, with the cooling, the thick mixture and had a less stretch than that of example 7.
Having thus described the invention numerous changes and modifications thereof, it will be readily apparent to those having ordinary skill in the art without departing from the spirit or scope of the invention.

Claims (43)

1. A coating composition that comprises hollow microspheres having a refractive index of around 1.9 to about 2.4.
2. The coating composition as claimed in clause 1, characterized in that the microspheres comprise titanium, barium, calcium and oxygen.
3. The coating composition as claimed in clause 2, characterized in that the microspheres further comprise aluminum, iron, strontium, zi and zirconium.
4. The coating composition as claimed in clause 1, characterized in that the microspheres have the following composition:
5. The coating composition as claimed in clause 1, characterized in that the microspheres are essentially spherical and have particle diameters ranging from about 2 microns to about 45 microns.
6. The coating composition as claimed in clause 5, characterized in that the microspheres have particle diameters ranging from about 27 to 45 microns.
7. The coating composition as claimed in clause 5, characterized in that the microspheres have particle diameters ranging from about 2 to 43 microns.
8. The coating composition as claimed in clause 1, characterized in that it also comprises one or more polymeric binders.
9. The coating composition as claimed in clause 8, characterized in that the 1 or more polymeric binders comprise polyvinylpyrrolidone (PVP) polyvinylalcohol (PVOH), polyhydroxyethyl acrylate polyhydroxyethyl methacrylate, polyacrylamide, polymethacrylamide polyethylene glycol, carboxymethyl cellulose, carboxymethyl cellulose sodium, hydroxypropyl cellulose, hydroxyethyl cellulose, polyacrylic acid, polyacrylic acid salts, polymethacrylic acid salts, polyvinyl sulfonate, polyvinyl sulfonate salts poly-2-acrylamido-2-methylpropanesulfonic acid, poly-2-acrylamido-2-methylpropanesulfonic acid salts, polyacryloxytrimethylammonium chloride d, dipo 1 imetacri 1 oxytrimeti 1 ammonium chloride, polydiallyldimethylammonium d chloride, or combinations thereof.
10. The coating composition as claimed in clause 8, characterized in that the 1 or m polymeric binders comprise sodium carboxymethyl cellulose, polyvinyl pyrrolidone (PVP), polyvinylalcohol (PVOH) combinations thereof.
11. The coating composition as claimed in clause 1, characterized in that they also comprise one or more cyclodextrins.
12. The coating composition as claimed in clause 11, characterized in that the 1 or cyclodextrins comprise a-cyclodextrin, / S-cyclodextrin, cyclodextrin, cyclodextrin, hydroxypropyl / S-cyclodextrin hydroxyethyl j8-cyclodextrin, hydroxyethyl cyclodextrin carboxymethyl cyclodextrin , carboxymethyl β-cyclodextrin carboxymethyl and cyclodextrin, octyl cyclodextrin succinate octyl β cyclodextrin succinate, octyl 7 cyclodextrin succinate, β-sulfated cyclodextrin, 7-cyclodextrin, combinations thereof.
13. The coating composition as claimed in clause 12, characterized in that 1 or more cyclodextrins comprise / S-cyclodextrin, 7-cyclodextrin hydroxyethyl S-cyclodextrin, hydroxypropyl / S-cyclodextrin, or a combination thereof.
14. The coating composition as claimed in clause 1, characterized in that the composition comprises from about 1 to 30 parts by weight (pbw) the microspheres, from about 10 to about 50 p of 1 or more polymeric binders, from about 0 about 300 pbw parts by weight of 1 or more cyclodextrin and from about 100 to about 500 pbw parts w weight of water.
15. The coating composition as claimed in clause 14, characterized in that the composition comprises from about 5 to about 10 parts by weight (pbw) of the microspheres, from about 10 about 20 pbw parts by weight of 1 or more polymeric binder, from about 100 to about 200 bp parts by weight of 1 or more cyclodextrins or from about d 100 to about 300 pbw parts by weight of water.
16. A substrate coated with the coating composition as claimed in clause 1.
17. The substrate as claimed in clause 16, characterized in that said substrate comprises wood paper, woven fabric, non-woven fabric, plastic, glass, metal sheet metal or a combination thereof.
18. The substrate as claimed in clause 17, characterized in that the substrate comprises paper.
19. The substrate as claimed in clause 16, characterized in that the coating composition applied to the substrate to produce a coating of weight from about 3.0 to about 60.0 g / m2.
20. The substrate as claimed in clause 19, characterized by the coating composition applied to the substrate to produce a coating of weight d from about 9.0 to about 23.0 g / m2.
21. The substrate as claimed in clause 19, characterized in that the coating composition is applied to the substrate to produce a coating of weight d from about 15.0 to about 20.0 g / m2.
22. An article that comprises; a substrate; Y a coating composition on a surface of the substrate; wherein the coating composition comprises hollow microspheres having a refractive index of about 1.9 to about 2.4.
23. The article as claimed in clause 22, characterized in that the substrate comprises wood, cloth, woven fabric, nonwoven fabric, textile, plastic glass, metal, sheet metal or combinations thereof.
24. The article as claimed in clause 23, characterized in that the substrate comprises paper
25. The article as claimed in clause 22, characterized in that the coating composition applied to the substrate to produce a coating weight from about 3.0 to about 60.0 g / m2.
26. The article as claimed in clause 25, characterized in that the coating composition applied to the substrate to produce a coating weight from about 9.0 to about 23.0 g / m2.
27. The article as claimed in clause 26, characterized in that the coating composition is applied to the substrate to produce a coating weight d from about 15.0 to about 20.0 g / m2.
28. The article as claimed in clause 22, characterized in that the microspheres comprise titanium, barium, calcium and oxygen.
29. The article as claimed in clause 28, characterized in that the microspheres further comprise aluminum, iron, strontium, zinc and zirconium.
30. The article as claimed in clause 29, characterized in that the microspheres have the following composition:
31. The article as claimed in clause 22, characterized in that the microspheres are essentially spherical and have particle diameters qu ranging from about 2 microns to about 45 microns.
32. The article as claimed in clause 31, characterized in that the microspheres have particle diameters ranging from about 27 to 4 microns.
33. The article as claimed in clause 31, characterized in that the microspheres have particle diameters ranging from about 2 to microns.
34. The article as claimed in clause 31, characterized in that the coated composition further comprises 1 or more polymeric binders.
35. The article as claimed in clause 34, characterized in that the 1 or more polymeric binder comprises polyvinylpyrrolidone (PVP) polyvinylalcohol (PVOH), polyhydroxyethyl acrylate polyhydroxyethyl methacrylate, polyacrylamide, polymethacrylamide polyethylene glycol, carboxymethyl cellulose, sodium carboxymethyl cellulose, hydroxypropyl cellulose , hydroxyethyl cellulose, polyacrylic acid, polyacrylic acid salts, polymethacrylic acid salts, polyvinyl sulphonate, polyvinyl sulfonate salts poly-2-acrylamido-2-methylpropanesulfonic acid, poly-2-acrylamido-2-methylpropanesulfonic acid salts, polyacryloxytrimethylammonium chloride, chloride dipo 1 imetacri 1 oxytrimeti 1 aonium, d-polydiallyldimethylammonium chloride, or combinations thereof.
36. The article as claimed in clause 35, characterized in that the 1 or more polymeric binder comprises carboxymethyl cellulose of sodium polyvinylpyrrolidone (PVP), polyvinylalcohol (PVOH) combinations thereof.
37. The article as claimed in clause 22, characterized in that it also comprises 1 or m cyclodextrins.
38. The article as claimed in clause 37, characterized in that the 1 or more cyclodextrin comprises a-cyclodextrin, / 3-cyclodextrin, 7-cyclodextrin, d-cyclodextrin, hydroxypropyl / 8-cyclodextrin, hydroxyethyl / S-cyclodextrin, hydroxyethyl-cyclodextrin , carboxymethyl cyclodextrin, carboxymethyl β cyclodextrin, carboxymethyl cyclodextrin, octyl cyclodextrin to succinate, octyl cyclodextrin succinate, octyl 7 cyclodextrin succinate, sulfated cyclodextrin, 7-cyclodextrin, or combinations thereof.
39. The article as claimed in clause 38, characterized in that 1 or more cyclodextrin comprises / S-cyclodextrin, 7-cyclodextrin, hydroxyethyl-cyclodextrin, hydroxypropyl J-cyclodextrin, or a combination thereof.
40. The article as claimed in clause 22, characterized in that the composition comprises from about 1 to 30 parts by weight (pbw) of the microspheres, from about 10 to about 50 pbw the most polymeric binders, from about from about 300 pbw parts by weight of 1 or more cyclodextrin and from about 100 to about 500 pbw parts w weight of water.
41. The article as claimed in clause 40, characterized in that the composition comprises from about 5 to about 10 parts by weight (pbw) the microspheres, from about 10 to about 20 p parts by weight of 1 or more polymeric binders, from about 100 to about 200 pbw parts by weight of 1 more cyclodextrins or from about 100 to about 30 pbw parts by weight of water.
42. A method to increase the brilliance and glow of a dye, said method comprises: apply the dye on the coating composition as claimed in clause 1.
43. A method for increasing the brightness and brightness of a colorant, said method comprises: applying the colorant to the surface of the article as claimed in clause 22.
MXPA/A/2000/007113A 1998-01-20 2000-07-20 Coating composition containing beads of high refractive index MXPA00007113A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US60/071,944 1998-01-20

Publications (1)

Publication Number Publication Date
MXPA00007113A true MXPA00007113A (en) 2001-07-09

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