MXPA99005613A - Washable coloring composition suitable for use in dry erase markers - Google Patents

Abstract

A washable dry erase coloring composition comprising an acid dye or polymeric dye colorant, a dye vehicle, a release agent, and an anionic dyeblocker. The dyeblocker additive may be an aromatic organic sulfonate and, preferably, is either a sulfonated naphthalene condensation product or a sulfonated phenol-formaldehyde condensation product. The dry erase coloring composition is suitable for use in marking on a whiteboard and enhances fugitivity from skin and fabrics. The dry erase coloring composition may optionally contain a film forming resin. More specifically, the invention is, in one preferred embodiment, a washable erasable whiteboard marker ink comprising an acid dye or polymeric dye, water, a film forming resin, a release agent and an aromatic organic sulfonate. In addition, the invention also includes a method of transferring an image from a whiteboard or non-porous surface to paper. This method comprises the steps of:(a) drawing an image on a whiteboard or non-porous surface with a washable coloring composition containing a dyeblocker;(b) applying a moistened paper to the image;(c) rubbing the moistened paper to transfer the image from the whiteboard to the paper;and (d) removing the paper.

Description

COLORING COMPOSITIONS WASHABLE SUITABLE FOR USE IN DRY CLEAR MARKERS This application is a continuation in part of the United States Patent Application Serial No. 08 / 800,755 filed on February 14, 1997, and a continuation in part of the United States Patent Application Serial No. 08 / 918,732 filed on August 1, 1997.

FIELD OF THE INVENTION The present invention relates in general to the field of washable dry erase coloring compositions for drawing and coloring purposes. In a particular aspect, the invention relates to writing instruments containing washable liquid colorant compositions and more specifically to colorant formulations for use in labels. In addition, washable coloring compositions are provided which are suitable for use on whiteboards.

BACKGROUND OF THE INVENTION White boards, also known as dry erase boards, are commonly used in offices, schools and other places where a chalk board may be different from chalk boards. What P13 1 / 99MX written on a dry erase board is liable to be erased by lightly wiping with felt, dry cloth or paper. The surfaces of suitable dry erase boards, in general, include melamine, vinyl, polyethylene laminates or a resinous enamel layer fixed to a support. These white boards are characterized because they have white, hard surfaces that are very smooth looking and basically non-porous. Alternatively, a white board may consist of a sheet of polymeric film such as acrylic resin or UV curable. A variety of compositions are known to be used for writing on waterproof writing surfaces such as whiteboards. These coloring compositions suitable for use on white boards should be easily erased without requiring extensive cleaning. In addition, compositions for white boards should be able to be removed without leaving visible traces commonly called "ghosts". The coloring compositions for white boards suffer from a variety of well-known deficiencies. Most markers for whiteboards are alcohol-based or solvent-based, which can be toxic and thus inappropriate for use by young children. For example, P1341 / 99MX U.S. Patents 4,954,174, 5,316,574 and 5,324,764 disclose erasable ink compositions for writing on waterproof surfaces containing an organic solvent such as an alcohol. In addition, many whiteboard markers produce writings that are not easily erasable from the board after a significant period of time passes. Finally, the current markers for white boards have a tendency to leave lasting stains when cleaning them. Although permanence is a desirable feature in so-called "permanent" markers, it is one of the most unacceptable properties in coloring instruments used by young children. Water-based marker compositions have been used. For example, U.S. Patents 5,412,021 and 5,561,175 disclose water-based compositions containing a pigment, a separating agent and a water-soluble resin. However, these aqueous compositions lack fugacity to leave the fabrics and often the skin. It is therefore a general object of the invention to provide a method for imparting to a dry erase dye composition having skin fupacity. Another object is to provide a dry erase coloring composition, which besides being washable P1341 / 99MX on the skin, exhibits improved washing ease in fabrics. A related object is to provide non-toxic dry erase coloring compositions, such as inks that are Suitable for use by young children who make marks about themselves and their clothes. Another object of the invention is to provide a colorant composition suitable for use on white boards and other non-porous surfaces which is also washable on the skin and on clothing. A further object is to provide a process for transferring to paper an image produced by a coloring composition on white boards or other non-porous surfaces. These and other objects and advantages of the present invention, as well as additional inventive features, will be more apparent to those skilled in the art from the following description of the invention and the appended claims.

BRIEF SUMMARY OF THE INVENTION The discovery of the present invention is that a dye blocker additive which imparts dramatically increased fugacity to the composition can be incorporated into a coloring composition.

P1341 / 99MX skin. At the same time, it has been found that in many cases, the dye blocker additive will markedly increase the fugacity to leave fabrics that are generally worn on children's clothing and other surfaces. In one of its more general aspects, the coloring composition of the invention comprises a dye selected from the group consisting of an acid dye, a polymeric dye and a dye blocker. Generally, dye blockers suitable for use in the present invention are anionic materials that have the ability to bind to dye receptor sites on the skin, fabrics or other surfaces. More specifically, suitable dye blockers are aromatic organic sulfonates and are preferably selected from the group consisting of a sulfonated naphthalene condensation product and a sulfonated phenol-formaldehyde condensation product. The coloring compositions of the invention are easily washed from the skin and also more easily washed in textiles. In another general aspect, the present invention includes a method for imparting skin wash facility to a dye-containing colorant composition by adding to the colorant composition an effective amount of an anionic dye blocker. From P1341 / 99MX preferably, the dye blocker is selected from the group consisting of a sulfonated naphthalene condensation product and a sulfonated phenol-formaldehyde condensation product. Thus, in one form, the invention is a washable coloring composition consisting of an acid dye or a polymeric dye, a dye carrier, a demolding agent and an aromatic organic sulfonate such as a sulfonated phenol-formaldehyde condensation product or a condensation product of sulfonated naphthalene. This form of the invention is suitable for use in marking on white boards. Preferably, the inventive coloring composition also contains a film-forming resin. More specifically, the invention, in a preferred embodiment, is an erasable marker ink for whiteboards comprising an acid dye or a polymeric dye, water, a film-forming resin, a mold release agent and a sulfonated phenol-formaldehyde condensation product. . In addition, a marker containing the dye composition of the invention is provided. In another form, the invention includes a method for transferring an image of a white board or other non-porous surface such as a plastic laminate to paper by (a) drawing on the white board or other P1341 / 99MX non-porous surface with a washable coloring composition comprising an acid dye or a polymeric colorant, a colorant carrier, a film-forming resin, a release agent and a colorant blocker; (b) apply a moistened paper to the image of the white board or other non-porous surface; (c) rubbing the moistened paper to transfer the image of the chalkboard or other non-porous surface to the paper; and (d) removing the paper from the white board or other non-porous surface. Alternatively, the inventive method includes images drawn using a washable colorant composition comprising an acid dye or a polymeric colorant, a colorant carrier, a demolding agent and a sulfonated phenol-formaldehyde condensation product or a sulfonated naphthalene condensation product.

DETAILED DESCRIPTION OF THE INVENTION The washable colorant composition of the present invention comprises an acid dye or a polymeric colorant, a colorant carrier, a release agent and an anionic dye blocker. A suitable class of dye blockers are the dye blockers of aromatic organic sulfonates. Preferably, the dye blocker is selected from the group that P1341 / 99MX consists of a condensation product of sulfonated phenol-formaldehyde and a condensation product of sulfonated naphthalene. Preferably, the coloring composition also contains a film-forming resin. The washable coloring compositions of the present invention exhibit increased fugacity to leave the skin and fabrics. This coloring composition is suitable in use for marking on white boards and can be easily erased by the usual means without apparent ghosts. The dye blocker component suitable for use in the invention imparts fugacity to the skin and in some cases, increased fugability in fabrics to the dyeing compositions of the invention. Many substances can function properly as a dye blocker. For example, anionic materials, such as surfactants or polymers, containing reactive functional groups, such as, for example, acidic groups, can be used. Although the present invention is in no way limited to a mechanism by which dye blockers function, it is believed that the acid groups in these anionic materials react with the dye receptor sites present on the skin, fabrics and other surfaces to form a Toarrera for the receivers of the dyes. Suitable anionic dye blockers include any straight chain compound P1341 / 99MX or aromatic containing, for example, very reactive carboxylic, suifonic or nitric groups which are likely to react with the receptor sites of the dye, such as, for example, the amino groups that are commonly present on the skin, on some types of fabrics and on other surfaces. Preferably, the anionic dye blocker is an aromatic organic sulfonate. A group of dye blockers of aromatic organic sulfonates which are preferred are condensation products of sulfonated phenol-formaldehyde, sulfonated naphthalene condensation products or mixtures thereof. The dye blockers useful in the practice of the present invention do not impair the stability of the dye compositions of the invention. By stability, it is understood that the coloring composition, which includes the additive constituted by the condensation product, should not precipitate or exhibit a marked change in color or pH when kept at a temperature of 140 ° F for two weeks . Preferably, the dye blockers selected for use in the invention, in addition to imparting fugacity on the skin, also increase the fugacity to exit textiles and other surfaces. Suitable dye blockers can often be film formers, which can also prevent the migration of dyes P1341 / 99MX to the reactive sites of a substrate, thereby reducing staining. Dye blockers of the sulfonated phenol-formaldehyde condensation product useful in the practice of the present invention are described in U.S. Patent No. 4,501,591. The suitable sulfonated phenol-formaldehyde condensation products may be, in non-exclusive form, linear, low molecular weight condensation products; that is, products having an average molecular weight of less than about 1000, for example, in the range of 250 and 700. These products are water soluble and can be prepared by conventional techniques recognized in the art, for example, by condensation of formaldehyde with one or more phenols in a molar ratio between about 1.0 and 0.8, phenol (s) with respect to formaldehyde, at a pH of less than 7 using an acid catalyst such as HCl, wherein at least one of the phenols is a phenolsulfonic acid or an alkali metal salt thereof. Preferably, the phenols comprise, in addition to the suifonic acid or the salt thereof, a sulfone, for example, aromatic dihydroxy diphenol sulfone. These condensation products contain, in addition to the suifonic acid groups or the alkali metal salts thereof, sulfone groups.

P1341 / 99MX Other sulfonated phenol-formaldehyde condensation products are disclosed in US Patent Specification 33,365 and in US Pat.

U.S. Patent Nos. 4,908,149, 4, 592, 940 and 4, 680,212. A sulfonated phenol-formaldehyde condensation product colorant blocker suitable for use in the compositions of the invention is Aerofix N ™, which is commercially available from Aerochem Corporation. The Aerofix N ™ is supplied as an aqueous dispersion of the condensation product of phenol-formaldehyde containing approximately 17% by weight of the active ingredient constituted by condensation product. Other sulfonated phenol formaldehyde condensation products suitable for use in the compositions of the invention are Intratex ™ available from Crompton and Knowles Corporation (dispersion containing approximately 18% by weight of the active ingredient constituted by condensation product) and Gascofix NY ™ available from GCI Technologies, Inc. (dispersion containing approximately 29% by weight of the active ingredient constituted by condensation product). Compatible mixtures of these condensation products of sulfonated phenol-formaldehyde can also be used. The condensation product of sulfonated phenol-formaldehyde, Aerofix N ™, is preferred for use in P1341 / 99MX compositions of the invention. The Aerofix N ™ dramatically increases the ease of washing in the skin and the ease of washing in fabric in the compositions of the invention. Other condensation products of sulfonated phenol-formaldehyde, may give equivalent or even better results and are within the scope of the invention. A sulfonated naphthalene condensation product colorant blocker suitable for use in the coloring compositions of the invention is Tamol SN ™. Tamol SN ™ is commercially available from Rohm and Haas and is supplied in solid form containing 100% by weight of the active ingredient. Other sulfonated naphthalene condensation products can give equivalent or even better results and are within the scope of the invention. The various dye blockers discussed above can be used alone or in combination when the dye blockers are compatible with each other. Other dye blockers suitable for the dye composition of the invention are the anionic surfactants. One of the suitable anionic surfactants is Dowfax 8390 ™ which is commercially available from Dow Chemical Co. Dowfax 8390 ™ is an alkylated diphenyloxide disulfonate and more specifically, is disodium disulfonate P1341 / 99MX hexadecyldiphenyloxide (15-35%) and disodium disulfonate dihexadecyldiphenyloxide (5-10%). The specific mechanism by which the dye blocker additive imparts fugacity on the skin and increases fugacity on cloth is not known. However, it is believed that the condensation product obstructs the reactive sites of the substrates to which the dye blocker containing colorant compositions are applied. The dye used as a colorant in compositions of the invention then has a reduced ability to physically or chemically associate with the substrate, either skin or fabric. The condensation product of sulfonated phenol-formaldehyde Aerofix N ™ was tested on numerous water-based dye compositions comprising dyes, preservatives and humectants. The compositions of the invention should contain a sufficient amount of the sulfonated phenol-formaldehyde condensation product to impart fugacity on the skin and increase the fugacity of the composition in the fabric. The amount of dye blocking additive present in the dye compositions of the invention depends on the specific condensation product that is used. At a minimum, the condensation product must be present in an amount P1341 / 99MX enough to impart increased fugacity on the skin and on the fabric. This effect is observed with amounts as small as about 1% by weight of the active ingredient constituted by condensation product in the total dry erase dye composition. Even greater washing ease is achieved when approximately 3.5% by weight of the active ingredient constituted by sulfonated phenol-formaldehyde condensation product is used when the colorant-blocking additive is Aerofix N ™. In general, a larger amount of the additive constituted by condensation product present in the dry erase coloring composition leads to a greater ease of washing the fabric, skin and other surfaces. However, at a certain time, the addition of more condensation product does not produce any improvement in the ease of washing of the dry erase composition. The upper limit of the concentration of dye blocker additive can also be determined by limitations in the viscosity and long-term stability of the compositions of the invention. For example, the dry-erase coloring composition can not have a significantly viscous consistency or will not flow through the marker pen when used in the form of a marker ink. Accordingly, the concentration of the additive constituted by the condensation product of P1341 / 99MX preference is in an amount between about 2% and 15% by weight of the active ingredient constituted by condensation product in the total coloring composition. In general, when the dispersion of Aerofix N ™, the beneficial effect of the additive is given at a concentration of at least about 10% by weight of the dispersion Aerofix N ™ based on the total coloring composition. When Aerofix N ™ is the selected dye blocker, it is present in an amount between about 5% and 60% by weight of the Aerofix N ™ dispersion based on the total dye composition of the invention. Preferably, the Aerofix N ™ component is present in an amount between about 15% and 40% by weight of the Aerofix N ™ dispersion based on the total colorant composition. More preferably, between 15% and 30% by weight of the Aerofix N ™ dispersion is used based on the total colorant composition in the coloring compositions of the invention. The coloring compositions of the invention also include one or more colorants. Suitable dyes are dyes that are preferably selected which are known to have good washing ability in fabrics. When used in the composition of the invention, such dyes not only increase the P1341 / 99MX ease of washing on the skin but also increase ease of washing on the fabrics. Although certain dye compositions containing polymeric dyes have been removed from the skin and fabrics with soap and a significant amount of rubbing, the white board erasable compositions of the present invention can be rinsed using only water. One type of dye suitable for use in the compositions of the present invention are acid dyes. By way of illustration and non-exclusively, the acid dyes that have been found suitable for use in this invention are Acid Violet 12, Acid Green 3, Acid Blue 9, Acid Yellow 17, Acid Yellow 23, Acid Red 52 and Acid Red 388. Yellow AMC can also be used # 6 Another category of colorants suitable for use in the present invention are polymeric dyes. Polymeric dyes are characterized by having polymer chains covalently bound to a chromophore molecule. By way of illustration and in non-exclusive form, polymeric dyes suitable for use in compositions of the invention include Palmer Scarlet ™, Palmer Blue ™, Palmer Magenta ™ and Experimental Palmer FL Red A 10 ™. These polymeric dyes are commercially available from Milliken Chemical and may be P1341 / 99 X covered by one or more of U.S. Patent Nos. 4,981,516, 5,043,013 and 5,059,244, the disclosures of which are hereby considered, by reference. Other polymeric dyes useful in the practice of the invention include polyalkyleneoxy-substituted chromophoric compounds, such as, for example, alkylene-substituted methylene dyes. Although certain dye compositions containing polymer dyes have been removed from the skin by rubbing with soap and water, the dyeing compositions of the present invention can be rinsed using water alone. Also, the coloring compositions of the present invention can be easily washed or removed more completely from many previously stained surfaces such as wallpaper, painted walls, wood, etc. Another type of coloring matter suitable for use in coloring compositions of the present invention are pigments. Examples of suitable pigments include inorganic pigments such as titanium dioxide or ferric oxide or organic pigments such as carbon black, phthalocyanines (for example, copper phthalocyanine blue), azo pigments, quinacridones, anthraquinones, dioxazines, Indians, thioindians, perinones, perylenes , indolenones and azo-azomethines. Encapsulated pigments can also be used. To achieve good coloration and promote compatibility P1341 / 99MX with the remaining components of the ink, the pigment can be used in the form of an aqueous dispersion, since by definition the pigments are insoluble materials. Pigment dispersions are commercially available which are combinations of a pigment, an aqueous-based character and a surfactant or dispersant system. A pigment dispersion can also be prepared to be used specifically in the coloring compositions of the invention. From the point of view of convenience, a commercial pigment dispersion is preferred for use in the present invention. Typical commercial dispersions contain between 30 and 74% by weight of active pigment ingredients. Examples of suitable pigment dispersions include Hostafine Rubine F6B (dispersion of C.l Pigment Red 184), Blue B2G (Pigment Blue 15-3) and Black 7 (Pigment Black T), marketed by Hoechst Celanese Corporation under the trade name "Hostafines Dispersions". The coloring compositions of the invention may contain polymeric dyes, acid dyes, pigments or mixtures thereof. In addition, the compositions may contain two or more polymeric dyes, two or more acid dyes or two or more pigments to achieve the desired color. Preferably the dye is present in an amount of about 2% to 20% by weight of the P1341 / 99MX total colorant composition of the invention. The minimum concentration of dye that will produce a manageable dye composition is determined by the intensity of color desired, although as little as 0.5% dye may be sufficient for certain applications. The maximum manageable dye concentration is determined largely by the ability to maintain a stable composition and can vary widely depending on the concentration of other components. The maximum amount of colorant is also a function of the characteristics of the desired final product, although a practical upper limit in the formulation of the composition of the invention, such as, for example, an erasable marker ink for whiteboard, is approximately 30% in weight of the total coloring composition of the invention. Higher concentrations may cause staining of the board (eg, ghosts), nullify the washing facility and provide undesirably high viscosity. For applications on whiteboards, too much dye increases the viscosity and makes it difficult to add a sufficient amount of film-forming resin and / or dye blocker necessary to produce desired washing ease. Preferably, the dry erase coloring compositions should have a viscosity of less than 6 cps when used as a marking ink.

P1341 / 99 X When a commercial pigment dispersion is used, a practical limit is imposed on the concentration of pigment in the dispersion. The preferred concentration range for most applications is about 1% to 10% of the active pigment by weight of the coloring composition. Usually a concentration of about 3% active pigment by weight is required to ensure good coloration in a typical marker ink and more preferably it is an active pigment concentration in a range of between about 1.5% and 5% by weight of the composition Colorant. The coloring composition of the present invention also includes an effective amount of a vehicle of the aqueous or other type of dye to form a solution of the remaining components. The preferred coloring vehicle is water. The maximum amount of colorant vehicle is the amount that results in a stable composition and that has the ability to form a mark having the minimum acceptable visibility on a substrate. The minimum amount of water is that necessary to form a stable solution of the components of the coloring composition and to provide a composition that can be freely applied from the selected applicator element, when the composition is to be used as a marking ink. Other vehicles of the P1341 / 99 X suitable dyes include alcohol or other solvents miscible with water, such as, for example, a 30% solution of denatured alcohol. Compatible mixtures of water and alcohol or other water miscible solvents can also be used as the vehicle of the colorant. Suitable water / solvent coloring vehicles can contain between 0% and 100% alcohol or other solvents miscible with water. Preferably, the colorant carrier may comprise between 0% and about 50% alcohol or other solvents miscible with water. The proportion of colorant vehicle contemplated herein is between about 30% and 90% by weight of the total colorant composition of the invention. Part of the water or the total of it may be water contribution that is found as a portion of one or more other components. The coloring compositions of the invention may also contain a release agent. When the coloring compositions of the invention are to be used for marking on a white board, the release agent itself forms a separating film between the surface of the white board and the film-forming resin. The film-forming resin does not take shape on the surface of the blackboard but on the top of the release agent. As a consequence, the film-forming resin, which contains the P1341 / 99MX dye, it can be erased with a dry cloth or eraser. Typical release agents include, in non-exclusive form, siloxanes such as polydimethylsiloxanes; polyethylene glycols; esters of higher monobasic fatty carboxylic acids; mono or diesters of dihydric alcohols, wherein the ester has a molecular weight of 100 or more; triglycerides of fatty acids; major hydrocarbons such as paraffin and squalene; polyesters and polyethers having molecular weights of 400 or more; and esters of a polycarboxylic acid with an alcohol. Preferred mold release agents are polyalkylene oxide-modified polydimethylsiloxanes which are marketed under the tradename Silwet L-7230 ™ and Silwet L-7607 ™ by OSi Specialties, Inc. Other useful release agents include, in non-exclusive form, Silwet L-7608 ™ marketed by OSi Specialties, Inc., DCQ43667 ™ and FF400 ™ marketed by Dow Corning, Carbowax ™ Polyethylene Glycol 1450 marketed by Union Carbide and Lipopeg 4L ™ sold by Lipo Chemicals, Inc. Mixtures of these release agents can also be used in the dry erase coloring compositions of the present invention. The release agent contained in the composition of the erasable ink for whiteboard marker is present in an amount between about 1% and 30% P1341 / 99MX by weight of the total coloring composition and preferably, in an amount between about 5% and 15% by weight of the total coloring composition. At a minimum, the release agent should be present in the compositions of the invention to be used on white boards in a suitable amount to produce compositions that are easily erasable from the board. However, when excessive amounts of the release agent are used, the compositions have an excessively high viscosity, which can give an unsuitable composition for use in conventional markers. The coloring compositions of the invention may optionally contain a resin that is soluble in water and that forms film at room temperature. When markings are made using the composition of the invention that includes this film-forming resin and are dried on a waterproof writing surface, the markings have a continuous layer of resin. The water-soluble film-forming resin also provides the coloring composition with a suitable viscosity for writing when the composition is used in the form of a marker ink for whiteboards and helps to prevent staining thereof. It is also believed that the dye blocking additives constituted by condensation product of the present invention can also serve as P1341 / 99MX film formers on which the dye is deposited. The preferred film-forming resin for use in the present invention is the polyvinylpyrrolidone which is marketed under the trame PVP K-15 ™ by GAF Chemicals Corporation. PVP K-15 ™ is usually supplied in 30% polyvinylpyrrolidone solution (ie, 70% water). Polyvinylpyrrolidone polymers of different molecular weight can also be used, such as PVP K-30 ™ and modified polyvinylpyrrolidone polymers, such as polyvinylpyrrolidone modified with polyvinyl acetate. Additional useful film-forming resins include, for example, non-exclusively, natural resins such as gum arabic, rosin or shellac; modified rosins such as rosin esters, hydrogenated rosins, maleic acid resins modified with rosin or phenolic resins modified with rosin; various phenolic resins; cellulosic resins such as ethylcellulose resins or acetylcellulose resins; ketone resins, polyvinyl alcohol, polyvinyl acetate resins, petroleum resins, polyvinyl butyral resins, vinylpyrrolidone-vinyl acetate copolymer resins or polyacrylic acid ester resins. Mixtures of two or more of these can also be used in the present invention.

P1341 / 99MX film-forming resins. The film-forming resin should be used in an effective amount. Preferably, the film-forming resin that is contained in the colorant composition suitable for use on white boards is present in an amount between about 0% and 10% by weight of active film-forming resin added with respect to the coloring composition. total and preferably, in an amount between about 1% and 5% by weight of active film-forming resin based on the total composition of the coloring composition of the invention. When the film-forming resin that is used is the polyvinylpyrrolidone supplied in solution as the PVP K-15 ™, between about 0% and 30% by weight of the PVP K-15 ™ solution can be employed based on the total weight of the product. the coloring composition is preferably used between about 5% and 15% by weight of the PVP K-15 ™ solution based on the total weight of the coloring composition. The actual amount of film-forming resin that is added to the coloring compositions of the invention depends on the particular dye used. When the amount of film-forming resin is too large, the resulting dry-erase coloring composition has an excessively high viscosity so that it writes poorly and in addition, the writing that is done with P1341 / 99MX they are not easily erased from the white board. Other film-forming components can also be added to the dry-erase coloring compositions of the present invention to provide increased washing ease. Suitable film-forming components may include starches. A wide range of starches are suitable, including, for example, the starch soluble in warm water and the starch soluble in cold water. Preferably, the starch may be added in an amount between about 2% and 30% by weight of the coloring composition to advantageously increase the ease of washing. In the present invention the combination of a dye blocker and starch increases the ease of washing in skin, walls, wallpaper, wood and other surfaces. A suitable starch for use in compositions of the present invention is the Dri-sweet 42 manufactured by Hubinger Co. Dri-sweet 42 is starch soluble in cold water. Another suitable cold water soluble starch is ICB 3000 manufactured by Staley. The dry erase coloring compositions of the invention are especially suitable for use as an erasable white board marker ink in which the colorant vehicle is water. The marker ink for erasable whiteboard can be supplied in a distribution system, such P1341 / 99 X as a marker instrument, which allows children to color or draw on waterproof surfaces such as whiteboards. The nibs suitable for use in such a system are bonded fibers or sintered plastic nibs. A marker pen containing the dry erase coloring composition of the invention in the form of an ink can usually take the form of any conventional marker. Preferably, the marker uses a pen of bonded fibers or sintered plastic. The marker reservoir containing the ink may be any distribution system for standard marker that includes, but is not limited to, acetate, polyester or polypropylene fiber systems. In addition, a fiber-free system can be used. In a preferred embodiment of the invention, the dye composition of the invention is in the form of an erasable white board marker ink. The ink contains a dye, water, a release agent, a film-forming resin and an anionic dye blocker. Preferably, the dye blocking additive is an aromatic organic sulfonate and more preferably is selected from the group consisting of sulfonated naphthalene condensation products, sulfonated phenol-formaldehyde condensation products and mixtures thereof. The marker ink for white board P1341 / 99MX inventive exhibits favorable dry-wiping characteristics on skin, fabrics and other household surfaces. The compositions of the present invention, when in the form of an erasable marker ink, may also advantageously include a humectant, a surfactant, a preservative, an antifoam and / or a pH regulator. These materials and their functions are well known and their mention here is by way of illustration only. In general, any effective amount of the additive can be used as long as the stability of the coloring composition of the invention is not adversely affected and the composition is suitable for use in the desired final product. For example, it is possible to include a humectant in an erasable white board marker ink to retard evaporation of water from the ink solution. This prevents excessively rapid drying of the ink on the pen nib which can cause pen nibs and damage the pen function. In addition, a humectant can improve the stability with respect to freezing / thawing of inventive ink compositions. Typical humectants include polyhydric alcohols such as glycerin, propylene glycol, ethylene glycol and diethylene glycol, hydroxylated starches, P1341 / 99MX low molecular weight poly (ethylene glycols) (p.m. = 200-400) and mixtures of these materials. Any effective amount of humectant can be used although generally a useful concentration range for these humectants is from about 5% to about 30% by weight of the total coloring composition. Surfactants may also be included in any effective amount (generally up to about 0.1% by weight) in the preferred erasable whiteboard marker ink compositions of the invention in order to adjust properties such as viscosity (for proper distribution of the ink through the nib) and surface tension (for good flow properties and wetting of the non-porous surface). Anionic surfactants, nonionic surfactants, such as poly (ethylene glycol) ether, alkylaryl polyether alcohol, fluorinated alkyl esters and mixtures of these materials are preferred for use in the compositions of the invention when they are in the form of erasable whiteboard marker inks. Conventional preservatives are also advantageously employed in the compositions of the invention to extend the shelf life of the composition. The preservative preferably serves as a bactericide and also as a fungicide. Some Typical preservatives P1341 / 99MX useful in the present invention include methyl p-hydroxybenzoate, glutaraldehyde, hydroxybenzoic acid esters, 3-iodo-2-propynyl butyl carbamate, bicyclic oxazolidones and a biocide containing as active ingredients 5-chloro-2 -methyl-4-isothiazolin-3 -one and 2-methyl-4-isothiazolin-3-one. If present, the preservatives are usually effective in any effective amount but are generally present in amounts from about 0.1% to about 1% by weight. Preferred conservatives include Kathon PFM ™ (isothiazolinones) manufactured by Rohm and Haas and Nuosept 95 ™ (bicyclic oxazolidine solutions) manufactured by Huís America. The pH of the coloring compositions of the present invention is preferably in the range between about 3.0 and 10.0, more preferably between about 4.0 and 9.0. To maintain this pH, a pH regulator can be used. Preferably, neutralized Versene is used as the pH regulator. In addition to controlling the pH, neutralized Versene can also help the ease of erasing some dyes from whiteboards when the compositions of the invention are used as whiteboard marker inks. The pH regulator can be added in an amount ranging from about 0% to 20% by weight. In a composition Preferred P1341 / 99MX, the pH regulator Versene neutralized, is added in an amount of about 10% by weight of the total composition of marker ink for erasable whiteboard. The coloring compositions of the present invention may also contain an antifoam to prevent foaming during the mixing of the various components. Suitable defoamers include silicones and siloxanes. The preferred antifoam is Tego Foamax 800 ™ marketed by Goldschmidt Chemical Corp. Other suitable defoamers include Zerofome AF-200 ™ marketed by NuTech Corp., Surfynol DF58 ™ marketed by Air Products and Foamaster H ™ marketed by Henkel. The addition of antifoam to the coloring compositions of the present invention does not adversely affect the ease of removal from the boards or the ease of washing when the compositions are used as marker inks for whiteboards. The amount of antifoam depends on the amounts of other components present in the coloring composition, though. normally between about 0.1% and 5% by weight of the total dry erase dye composition is used. The coloring compositions of the present invention can be prepared by any suitable form. For example, the polymeric dye, P1341 / 99MX colorant carrier, release agent, film-forming resin and anionic colorant blocker along with other optional components (eg preservatives and humectants) can be added to a suitable container and mixed until a suitable solution is obtained.

EXAMPLES »Examples of coloring compositions of the present invention are the following. These examples further illustrate the present invention, but of course, they should not be construed in any way as limiting its scope. The amounts are in percent by weight of the total composition. These example compositions are suitable for use for marking on white boards. Different coloring compositions were prepared using acidic and polymeric dyes and a dye blocking additive constituted by condensation product. These compositions were formulated in the form of marker inks. These compositions containing a film-forming resin, a release agent and a dye-blocking additive constituted by condensation product are set forth in Examples 1-8. In Examples 1-2 and 4-8, the colorant blocking additive is the condensation product of sulfonated phenol-formaldehyde, P1341 / 99MX Aerofix N ™. In example 3, the colorant blocking additive is the condensation product of sulfonated naphthalene, Tamol SN ™.

Example 3. - Red Component% by weight Deionized water 52.54 (colorant vehicle) Palmer Scarlet 9.99 (polymeric dye) Palmer FL Red A 10 2.00 (polymeric dye) Aerofix N 19.97 (condensation product of phenol-formaldehyde) PVP K- 30 (solution 30%) 5.14 (film-forming resin) Silwet L-7S07 9.99 (release agent) Nuosept 95 0.30 (preservative) Kathon PFM 0.08 (preservative) P1341 / 99MX Example 2 ^ Z. Blue Component% by weight Deionized water 44.62 (coloring vehicle) Palmer Blue 5.00 (polymeric dye) Aerofix N 20.00 (condensation product of phenol-formaldehyde) PVP K-15 (30% solution) 10.00 (film-forming resin) Silwet L-7607 10.00 (release agent) Versene neutralized 10.00 (pH regulator) Nuosept 95 0.30 (conservative) Kathon PFM 0.08 (conservative) Example 3 ^ Z. Yellow Component% by weight Deionized water 72.62 (coloring vehicle) Yellow Acid 23 2.00 (acid dye) P1341 / 99MX Tamol SN 5.00 (condensation product of naphthalene) PVP K-15 (30% solution) 10.00 (film-forming resin) Silwet L-7607 10.00 (release agent) Nuosept 95 0.30 (conservative) Kathon PFM 0.08 (conservative) Example 4_ ^ Z Green Component% by weight Deionized water 55.62 (coloring vehicle) Palmer Blue 3.20 (polymeric dye) Acid yellow 23 0.80 (acid dye) Aerofix N 20.00 (condensation product of phenol-formaldehyde) PVP K-15 (30% solution) 10.00 (film-forming resin) Silwet L-7607 10.00 (release agent) P1341 / 99MX Nuosept 95 0.30 (conservative) Kathon PFM 0.08 (conservative) Example 5_ ^^, Black Component% by weight Deionized water 39.82 (coloring vehicle) Palmer Blue 4.40 (polymeric dye) Palmer Magenta 4.40 (polymeric dye) A.M.C. Yellow # 6 1.00 (acid dye) Aerofix N 20.00 (condensation product of phenol-formaldehyde) PVP K-15 (30% solution) 10.00 (film-forming resin) Silwet L-7607 10.00 (release agent) Versene neutralized 10.00 (pH regulator) Nuosept 95 0.30 (conservative) Kathon PFM 0.08 (conservative) P1341 / 99 X Example 6 ^ - Naran a Component% by weight Deionized water 56.62 (coloring vehicle) A.M.C. Yellow # 6 3.00 (acid dye) Aerofix N 20.00 (condensation product of phenol-formaldehyde) PVP K-15 (30% solution) 10.00 (film-forming resin) Silwet L-7607 10.00 (release agent) Nuosept 95 0.30 (conservative) Kathon PFM 0.08 (conservative) Example 1_ ^ z. ioleta Component% by weight Deionized water 46.42 (coloring vehicle) Palmer Magenta 3.20 (polymeric dye) Aerofix N 20.00 (condensation product of phenol-formaldehyde) P1341 / 99MX PVP K-15 (30% solution) 10.00 (film-forming resin) Silwet L-7607 10.00 (release agent) Versene neutralized 10.00 (pH regulator) Nuosept 95 0.30 (conservative) Kathon PFM 0.08 (conservative) Example? ^ I. Ca ^ e Component% by weight Deionized water 42.06 (coloring vehicle) Palmer Blue 0.88 (polymeric dye) A.M.C. Yellow # 6 1.00 (acid dye) Palmer Scarlet 5.68 (polymeric dye) Aerofix N 20.00 (condensation product of phenol-formaldehyde) PVP K-15 (30% solution) 10.00 (film forming resin) P1341 / 99MX Silwet L-7607 10.00 (demolding agent) Versene neutralized 10.00 (pH regulator) Nuosept 95 0.30 (preservative) Kathon PFM 0.08 (preservative) TEST PROCEDURES A. Skin Fugacity The fugacity on the skin of the compositions of the invention cited in the previous examples was determined by the following tests: 1. Wash hands with soap and warm water.

Washing prior to staining removes excess oil and dirt from the skin and provides a more consistent skin surface for testing. Let the skin dry for 30 seconds. 2. With the compositions of the invention used in a marker having sintered plastic nib, draw a line in the palm of the hand with the flat part of the pen. In the normal case, a ray of 1/4 inch wide by 1 inch long works well. Apply enough pressure and / or pass the pen several times to make a line with good color intensity. If you want to make a comparison P1341 / 99MX between two or more compositions, you can make more than one line. Let the streaks dry for fifteen minutes. 3. In the case of a marker, place your hand under the faucet and rinse the excess ink with warm water. 4. Wash hands with Ivory bar soap as follows: foam using a minimum amount of soap; replace the soap in the soap dish; rub both hands vigorously with moderate pressure for 30 seconds; Rinse to remove the soap. 5. Dry your hands with paper towels and complete the drying with a relatively dry towel. A dry towel with rubbing will help remove the remaining traces of the ink.

B. Fugacity in the Fabric The fugacity in fabric of the compositions of the invention was determined by the following test. 1. Pre-wash test fabrics with bleach, non-staining water softener and a common household detergent powder using 120 ° F hot water as directed in ASTM D4265-83 and dry. 2. Cut fabric samples to test the pre-washed fabrics to be tested. 3. Deposit marker inks on the P1341 / 99MX cloth samples to test and leave to dry for 4 hours. 4. Hold a group of stained cloth samples on the edges of a bath towel. 5. Add a load of fabrics without staining to provide a wash load of four pounds.

Wash the load in a washing machine for 12 minutes with warm cycle (between approximately 80 ° F and 90 ° F) / cold or a cold cycle (between approximately 35 ° F and 55 ° F) / cold. 6. Dry the load in a dryer. 7. Remove the fabric samples from the carrier towel, iron and observe the degree of staining.

EVALUATION OF THE TEST DATA The data of fugacity in skin and fabric are based on a visual estimation system of the following form: 0 = no spot 0.5 = spot very light 1 = spot light 2 = spot light to moderate 3 = light to intense stain 4 = intense stain An asterisk (*) after the numerical estimate indicates the particular degree of staining after rinsing only with water instead of rubbing with water and water afterwards. The viscosity, pH and fugacity in the skin of P1341 / 99MX the coloring compositions in Examples 1-8 is set forth in Table I. Fugacity in the skin was determined in 14 individuals. Since the results of ease of washing will vary in each individual, the range of fugacity in skin observed for each of the coloring compositions of the examples is provided.

TABLE I - Fugacid Example of viscosity pH Fugacity in Skin Number (cps) 1 5.33 8.20 0, 0 *, 0.5 * 2 4.17 7.95 0, 0 *, 0.5, 0.5 *, 1 3 3.17 7.50 0, 0.5, 0.5 * 4 3.76 8.05 0, 0 * 5 5.56 8.00 0, 0 * 6 4.05 8.40 0, 0 *, 0.5, 0.5 * 7 4.57 8.19 0, 0 *, 0.5 * 8 5.25 8.15 0, 0 * The fabric fugacity data of the dye compositions in Examples 1-8 is set forth in Table II. The washing ease of these inks was tested on mixtures of 50% cotton / 50% polyester and 100% cotton. In addition, the washing facility was examined using a washing machine with both cold / cold cycle and warm / cold cycle. The cold / cold cycle was repeated P1341 / 99MX in the fabric samples. As demonstrated, no stains were observed in either 50% cotton / 50% polyester or 100% cotton after a second cold wash. For comparison, the fabric fugacity of a control dye composition was analyzed. The control is a typical ink composition for whiteboard with alcohol base.

TABLE II - Fugacity in Tela Ei 1 E-j 2 Ei 3 Ei 4 Ei 5 Ei 6 Ei 7 Ei 8 Ctrl Mix 50% / 50% 1.5 0 0.5 0.5 0.5 (cold cycle) Mix 50% / 50% 0 0 0 0 0 3.5 (2nd cold cycle) 100% cotton 0 1.5 0.5 1.5 (cold cycle) 100% cotton 0.5 0 0 0 0 0 3.5 (2nd cold cycle) Mix 50% / 50% 0 0 0 0 0 0 0 (warm cycle) 100% cotton 0 0 0 0 0 0 0 (warm cycle) From the previous examples 1-8, it can be seen that the dry erase coloring compositions of the present invention containing a dye blocker exhibit increased fugacity in the skin and in the fabric.

P1341 / 99MX The coloring compositions of the invention containing a colorant blocking additive constituted by condensation product different from Aerofix N are set forth below in Examples 9-12. Examples 13-16 and 18 below illustrate coloring compositions of the invention that do not contain a film-forming resin. Each of these examples is in the form of marker ink. Example 17 is illustrative of a dry erase coloring composition using a colorant vehicle comprising a mixture of water and alcohol. Example 18 is illustrative of a marker ink containing a starch.

Example 9_ Component% by weight Deionized water 64.62 (colorant vehicle) Palmer Blue 5.00 (polymeric dye) Intratex N 5.00 (phenol-formaldehyde condensation product) PVP K-15 (30% solution) 15.00 (film-forming resin) Silwet L-7607 10.00 (release agent) P1341 / 99MX Nuosept 95 0.30 (conservative) Kathon PFM 0.08 (conservative) Example 10 Component% by weight Deionized water 68.87 (coloring vehicle) Acid Blue 9 1.25 (acid dye) Gascofix NY 12.00 (condensation product of phenol-formaldehyde) PVP K-15 (30% solution) 10.00 (film-forming resin) Silwet L-7608 7.50 (release agent) Nuosept 95 0.30 (conservative) Kathon PFM 0.08 (conservative) Example 11 Component% by weight Deionized water 81.37 (coloring vehicle) P1341 / 99MX Yellow Acid 23 2.00 (acid dye) Tamol SN 5.00 (condensation product of naphthalene) PVP-VA 3.00 (film-forming resin) Silwet L-7607 8.00 (release agent) Dow Corning FC 120 0.25 (surfactant) Nuosept 95 0.30 (preservative) Kathon PFM 0.08 (preservative) Example 12 Component% by weight Deionized water 63.82 (coloring vehicle) Palmer Blue 4.40 (polymeric dye) Palmer Magenta 4.40 (polymeric dye) A.M.C. Yellow # 6 1.00 (acid dye) P1341 / 99MX Tamol SN 5.00 (condensation product of naphthalene) PVP K-30 (solution 30%) 4.00 (film-forming resin) Versene neutralized 5.00 (pH regulator) Lipopeg 4L 12.00 (release agent) Nuosept 95 0.30 (conservative) Kathon PFM 0.08 (conservative) Example 13 Component% by weight Deionized water 38.72 (coloring vehicle) Palmer Blue 0.90 (polymeric dye) Palmer Scarlet 5.70 (polymeric dye) A.M.C. Yellow # 6 1.00 (acid dye) Aerofix N 25.00 (condensation product of phenol-formaldehyde) P1341 / 99MX Dow Corning FF400 8.00 (release agent) Versene neutralized 10.00 (pH regulator) Glycerin 10.00 (humectant) Nuosept 95 0.30 (conservative) Kathon PFM 0.08 (conservative) Tego Foamex 800 0.30 (antifoam) Example 14 Component% by weight Deionized water 54.82 (coloring vehicle) Palmer Blue 4.40 (polymeric dye) A.M.C. Yellow # 6 1.00 (acid dye) Palmer Magenta 4.40 (polymeric dye) Aerofix N 20.00 (condensation product of phenol-formaldehyde) P1341 / 99 X Dow Corning Q43667 5.00 (release agent) Versene neutralized 10.00 (pH regulator) Nuosept 95 0.30 (conservative) Kathon PFM 0.08 (conservative) Example 15 Component% by weight Deionized water 64.42 (coloring vehicle) Pamer Blue 5.00 (polymeric dye) Aerofix N 10.00 (condensation product of phenol-formaldehyde) Silwet L-7607 4.00 (release agent) Silwet L-7608 6.00 (release agent) Versene neutralized 10.00 (pH regulator) Nuosept 95 0.30 (conservative) Kathon PFM 0.08 (conservative) P1341 / 99MX Example 16 Component% by weight Deionized water 69.62 (coloring vehicle) A.M.C. Yellow # 6 3.00 (acid dye) Aerofix N 20.00 (condensation product of phenol-formaldehyde) Silwet L-7230 5.00 (release agent) PEG-400 2.00 (humectant) Nuosept 95 0.30 (conservative) Kathon PFM 0.08 (conservative) Example 17 Component% by weight Deionized water 35.62 (coloring vehicle) Denatured ethanol 30.00 (coloring vehicle) Palmer Blue 5.00 (polymeric dye) P1341 / 99MX Aerofix N 16.00 (condensation product of phenol-formaldehyde) PVP K-15 (30% solution) 8.00 (film-forming resin) Silwet L-7607 5.00 (release agent) Versene neutralized 10.00 (pH regulator) Nuosept 95 0.30 (conservative) Kathon _PFM 0.08 (conservative) Example 18 Component% by weight Deionized water 61.62 (coloring vehicle) Palmer Blue 5.00 (polymeric dye) Dowfax 8390 3.00 (coloring blocking additive) Dri-sweet 42 15.00 (starch) Silwet L-7607 15.00 (release agent) P1341 / 99MX Nuosept 95 0.30 (preservative) Kathon PFM 0.08 (conservative) In another aspect of the present invention, the image produced on a white board or other non-porous surface such as a plastic laminate can be transferred to paper using the inventive coloring compositions. Surprisingly, it has been found that images that are formed using the inventive compositions can be easily transferred to paper to produce beautiful color prints. In general, the process of printing the invention involves the following steps: (a) draw on a white board or other non-porous surface to generate an image; (b) apply a moistened paper to the image; (c) rub the moistened paper to transfer the image from the white board or other non-porous surface to the paper; and (d) remove the whiteboard or other non-porous surface paper. In this way, a color print on paper is produced from the original drawing. The drawing on the white board or other non-porous surface can be made with the washable coloring compositions of the present invention described above. After drawing a P1341 / 99MX image on a white board or other non-porous surface, prepare a piece of paper to which the image will be transferred. The paper is moistened with water or another water-based emulsion or gel as one of the type sold under the name LUBRIDERM. Paper can be wetted in any way, which includes, but is not limited to, using a spray bottle, a wet sponge, a paint roller or a spatula. In addition, the amount of water or water-based emulsion or gel added to the paper can be varied to produce different effects on the color print. Thus, the paper may be wetted lightly or completely depending on the desired effect. Various kinds of paper can be used in the process of printing the invention. The papers marketed under the name Cascade-9000 (manufactured by Boise Cascade) produce excellent results to make a color print from the image on the white board. Optionally, if excessive moisture is imparted to the paper, excess water can be removed. The removal can be done, for example, using a spatula of the spatula type for automotive putty or a paper towel to dry the paper. In general, moisture should be removed from the dampened paper so that no "bright" spots remain. The moistened piece of paper is placed P1341 / 99MX then on the image on the white board or on another non-porous surface. The transfer of the image to the paper is completed by rubbing on the surface of the paper. The rubbing step can be carried out using for example, the hands of the user, a roller or a spatula of the type of the spatulas for automotive putty. To ensure proper transfer of the image, preferably the moistened paper is left on the surface of the white board or other non-porous surface for at least 30 seconds after it is applied. Finally, the paper is removed from the surface to produce a color print of the original image that has been transferred to the paper. The quality of the color form produced by the inventive process is affected by several factors during the transfer process, including the level of moisture present in the paper, the elimination of any excess water from the paper and the pressure applied to the paper. during the rubbing step. To produce a clear color print without spoiling. the image, one or more of the following adjustments must be made: (1) use less water to moisten the paper; (2) remove any excess water present in the paper; or (3) apply less pressure during the rubbing phase. In the case that the inventive process does not P1341 / 99MX produces a full color print, the transfer process must be repeated one or more times. For example, if there are light spots on the paper where the original image has not been transferred completely, then the following steps should be followed: (a) reapply the paper to the white board or other non-porous surface that has the image original ensuring the correspondence of the form with the original drawing; (b) rubbing the paper surface to transfer the rest of the original image; and (c) removing the paper from the white board or other non-porous surface. The inventive process can be used to transfer an image from any white board or other non-porous surface on which the coloring compositions of the present invention are applied. Optionally, a special white board with bolts along one of its edges can be used on which common paper with three perforations can be placed. This special white board allows the paper to match the three perforations on the image each time in the same position and is therefore especially useful if the image is not transferred completely to the paper on the first try. After the first transfer attempt, the paper with three perforations with a partial image can be repositioned on the pins P1341 / 99MX in correspondence with the image so that portions of the image remaining on the board can be transferred to the paper to form the complete original drawing. In another embodiment of the invention, a white board or other firm base is constructed with a meshing device such as pins or other suitable devices such as mesh slots to adjust and position the wetted paper so that it is held in a stable position. The meshing device may be in the form of one or more pins extending from a flat surface of the base so that the pins correspond to the position of the perforations normally found in the paper or to the positions of the perforations that have to be made on paper using a common punch. The normal positions of the pins would match the typical two- or three-hole perforating devices that are typically commercially available. In this mode, a piece of paper would be fixed to the firm base, for example, by hanging the paper with three perforations in three spaced pins. A drawing could then be made using the inventive coloring compositions of the present invention on a non-porous surface of a sheet of material such as paper covered with plastic laminate. He P1341 / 99MX paper hanging from the firm base will then moisten as described above. The original image on the non-porous surface would then be applied to the moistened paper by trapping the paper between the firm base and the non-porous surface. The reverse side of the non-porous surface is rubbed to transfer the image to the paper. Then, the sheet of material that has the non-porous surface is removed leaving an image on the paper. In this case, the sheet of material having the non-porous surface could also have three corresponding perforations which coincide with the pins of the firm base to provide repeated correspondence between the original image on the second non-porous surface and the image transferred on the paper moistened All references cited herein, including patents, patent applications and publications, are considered to be part of the present in its entirety, as a reference. Although this invention has been described with emphasis on the preferred embodiments, it will be apparent to those of ordinary skill in the art that variations of the preferred embodiments may be used and that the invention is intended to be practiced in a manner different from that specifically described. here. Accordingly, this invention includes all modifications P1341 / 99MX comprised within the spirit and scope of the invention as defined in the following claims.

P1341 / 99MX

Claims (38)

1. NOVELTY OF THE INVENTION Having described the present invention, it is considered as a novelty and, therefore, the content of the following CLAIMS is claimed as property: 1. A washable coloring composition comprising: (a) one or more colorants selected from the group consisting of an acid dye, a polymeric dye, a pigment and mixtures thereof; (b) a coloring vehicle; (c) a release agent; and (d) an anionic dye blocker in an amount sufficient to increase the fugacity of the composition in the skin and fabric.
2. 2. The washable composition according to claim 2, wherein the anionic dye blocker is an aromatic organic sulfonate.
3. 3. The washable composition according to claim 1, wherein the aromatic organic sulfonate is selected from the group consisting of a sulfonated naphthalene condensation product, a sulfonated phenol-formaldehyde condensation product and mixtures thereof.
4. 4. The washable colorant composition according to claim 1, further comprising a film-forming resin. P1341 / 99MX 5. The washable colorant composition according to claim 1, wherein the colorant composition is suitable for use on whiteboards. The washable colorant composition according to claim 1, wherein the colorant carrier is selected from the group consisting of water, alcohol and mixtures thereof. The washable colorant composition according to claim 6, wherein the colorant carrier comprises between 0% and about 50% alcohol. 8. A marker ink for erasable white board comprising: (a) a dye selected from the group consisting of an acid dye, a polymer dye, a pigment and mixtures thereof; (b) water; (c) a release agent; and (d) an anionic dye blocker in an amount sufficient to increase the fugacity of the composition in the skin and fabric. 9. The erasable white board marker ink according to claim 8, wherein the anionic dye blocker is an aromatic organic sulfonate. 10. The marking ink for erasable white board according to claim 8, wherein the aromatic organic sulfonate is selected from the group P1341 / 99MX consisting of a condensation product of sulfonated naphthalene, a condensation product of sulfonated phenol-formaldehyde and mixtures thereof. 11. The erasable white board marker ink according to claim 8, further comprising a film-forming resin. The erasable white board marker ink according to claim 11, wherein the film-forming resin is present in an amount between about 1% and 10% by weight of the active film-forming resin in the composition, the release agent is present in an amount between about 2% and 30% by weight of the composition and the anionic dye blocker is a condensation product of sulfonated phenol-formaldehyde present in an amount between about 2% and 15% by weight of the composition. 13. A washable, dry erase dye composition comprising: (a) one or more dyes selected from the group consisting of a pigment, an acid dye, a polymer dye, and mixtures thereof; (b) a coloring vehicle; (c) a release agent; and (d) an anionic dye blocker in an amount sufficient to increase the fugacity of the composition in the skin and fabric. P1341 / 99MX 14. The washable, dry erase dye composition according to claim 13, wherein the anionic dye blocker is an aromatic organic sulfonate. 15. The washable, dry erase dye composition according to claim 14 , wherein the aromatic organic sulfonate is selected from the group consisting of a sulfonated naphthalene condensation product, a sulfonated phenol-formaldehyde condensation product and mixtures thereof. 16. The dry erase coloring compositionWashable according to claim 13, further comprising a film-forming resin. 17. The washable, dry erase coloring composition according to claim 13, wherein the colorant vehicle is selected from the group consisting of water, alcohol and mixtures thereof. 18. The washable, dry erase dye composition according to claim 17, wherein the colorant vehicle comprises between 0% and about 50% alcohol. 19. An erasable white board marker comprising a barrel, an ink and a nib, the ink comprising: (a) one or more colorants selected from the group consisting of an acid dye, a polymeric dye, a pigment and mixtures of the same; P1341 / 99MX (b) water; (c) a film-forming resin; (d) a release agent; and (e) an anionic dye blocker in an amount sufficient to increase the fugacity of the composition in the skin and fabric. The erasable white board marker according to claim 19, wherein the anionic dye blocker is an aromatic organic sulfonate. 21. The erasable white board marker according to claim 20, wherein the aromatic organic sulfonate is selected from the group consisting of a sulfonated naphthalene condensation product, a sulfonated phenol-formaldehyde condensation product and mixtures thereof. 22. An erasable white board marker according to claim 19, wherein the nib is selected from the group consisting of attached fiber nibs and sintered plastic fibers. 23. An aqueous erasable white board ink composition suitable for use in a marking instrument, the composition comprising: (a) one or more dyes selected from the group consisting of an acid dye, a polymer dye, a pigment, and mixtures thereof, (b) a film-forming resin in an amount between about 1% and 10% by weight of the P1341 / 99MX active film forming resin of the total composition; (c) a release agent in an amount between about 2% and 30% by weight of the total composition; (d) a preservative in an amount between about 0.1% and 1% by weight of the total composition; (e) an aromatic organic sulfonate in an amount between about 2% and 15% by weight of the total composition. 24. A method for imparting skin and cloth fugacity to a dry erase dye composition containing an acid dye, polymer dye or pigment, comprising adding to the composition a dye blocker consisting of aromatic organic sulfonate selected from the group which consists of a condensation product of sulfonated naphthalene, a condensation product of sulfonated phenol-formaldehyde and mixtures thereof in an amount sufficient to increase the fugacity of the composition in the skin and in fabric. 25. A method to transfer an image of a white board or a non-porous surface to paper, the method comprises: (a) drawing on the white board or the non-porous surface to make the image with a P1341 / 99MX washable dye composition comprising: (i) one or more dyes selected from the group consisting of an acid dye, a polymer dye and mixtures thereof; (ii) a coloring vehicle; (iii) a release agent; and (iv) an anionic dye blocker in an amount sufficient to increase the fugacity of the composition in the skin and fabric; (b) apply a moistened paper to the image on the white board or on the non-porous surface; (c) rubbing the paper to transfer the image of the white board or the non-porous surface to the paper; and (d) removing the paper from the white board or from the non-porous surface. 26. The method according to claim 25, wherein the anionic dye blocker is an aromatic organic sulfonate. The method according to claim 25, wherein the aromatic organic sulfonate is selected from the group consisting of a sulfonated naphthalene condensation product, a sulfonated phenol-formaldehyde condensation product and mixtures thereof. 28. The method according to claim 25, wherein the washable colorant composition further comprises a film-forming resin. P1341 / 99MX 29. The method according to claim 25, wherein the paper is slightly moistened. 30. The method according to claim 25, wherein the paper is completely wetted. 31. The method according to claim 25, further comprising removing excess water from the paper prior to application of the paper to the white board or the non-porous surface. 32. The method according to claim 25, where the paper is left on the white board or on the non-porous surface for at least 30 seconds. 33. The method according to claim 25, wherein the white board or the non-porous surface includes means for holding the paper in a fixed position. 34. A method for transferring an image of a non-porous surface to paper, the method comprising: (a) drawing on the surface to make the image with a washable colorant composition comprising: (i) one or more colorants selected from the group consists of an acid dye, a polymeric dye and mixtures thereof; (ii) a coloring vehicle; (iii) a release agent; and (iv) an anionic dye blocker in an amount sufficient to increase fugacity P1341 / 99MX of the composition in the skin and in fabric; (b) apply the image on the surface to a moistened paper placed on a firm base; (c) rubbing the side of the non-porous surface opposite the side that carries the image to transfer the image of the non-porous surface to the paper; and (d) removing the non-porous surface from the paper. 35. The method according to claim 34, wherein the anionic dye blocker is an aromatic organic sulfonate. 36. The method according to claim 34, wherein the aromatic organic sulfonate is selected from the group consisting of a sulfonated naphthalene condensation product, a sulfonated phenol-formaldehyde condensation product and mixtures thereof. 37. The method according to claim 34, wherein the washable colorant composition further comprises a film-forming resin. 38. The method according to claim 34, wherein the firm base includes means for adjusting the paper and keeping it in a fixed position. P1341 / 99MX SUMMARY OF THE INVENTION A washable dry erase dye composition comprising an acid dye or a polymeric dye, a dye carrier, a release agent and an anionic dye blocker. The colorant blocking additive may be an aromatic organic sulfonate, preferably it is either a sulfonated naphthalene condensation product or a sulfonated phenol-formaldehyde condensation product. The dry erase dye composition is suitable for use in marking on a white board and increases the transience on skin and fabrics. The dry erase dye composition may optionally contain a film-forming resin. More specifically, in a preferred embodiment, the invention is a washable erasable white board marker ink comprising an acid dye or polymeric dye, water, a film-forming resin, a release agent and an aromatic organic sulfonate. In addition, the invention also includes a method for transferring an image of a white board or a non-porous surface to paper. This method comprises the steps of: (a) drawing an image on a white board or on a non-porous surface with a washable coloring composition containing a dye blocker; (b) apply a moistened paper to the image; (c) rub the moistened paper P1341 / 99MX to transfer the image of the white board to the paper; and (d) removing the paper. P1341 / 99MX