EP2097489A2 - Corrector fluid with drying indicator - Google Patents

Corrector fluid with drying indicator

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Publication number
EP2097489A2
EP2097489A2 EP07870381A EP07870381A EP2097489A2 EP 2097489 A2 EP2097489 A2 EP 2097489A2 EP 07870381 A EP07870381 A EP 07870381A EP 07870381 A EP07870381 A EP 07870381A EP 2097489 A2 EP2097489 A2 EP 2097489A2
Authority
EP
European Patent Office
Prior art keywords
solvent
fluorescent dye
composition
drying
time
Prior art date
Legal status (The legal status 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 status listed.)
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Application number
EP07870381A
Other languages
German (de)
French (fr)
Inventor
Carine Bethouart
José Duez
Bernard Faure
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BIC SA
Original Assignee
BIC SA
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Filing date
Publication date
Application filed by BIC SA filed Critical BIC SA
Publication of EP2097489A2 publication Critical patent/EP2097489A2/en
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D10/00—Correcting fluids, e.g. fluid media for correction of typographical errors by coating

Definitions

  • the present invention relates to a correction fluid containing a fluorescent dye as a drying indicator.
  • drying or visualization indicators to stationery compositions whose use involves a drying time after application, such as correction fluids.
  • the drying indicators used in the correction fluids are intended to allow the user to visually evaluate the moment when the composition is sufficiently dry, that is to say the moment when the film formed by the correction fluid can receive a new registration without risk of being damaged.
  • the drying indicators colored and therefore visible to the user at the time of application of the composition, gradually lose their color and ideally become completely colorless when the composition is dry.
  • patent application US2005 / 0075419 discloses a water-based correction fluid containing, as a drying indicator, a colored pH indicator.
  • the correction fluid also contains a volatile acid or a volatile base whose evaporation causes a change in the pH of the correction film and therefore the discoloration of the pH indicator.
  • compositions containing a colored pH indicator as a drying indicator is the precise adjustment of the fading time to the actual drying time of the composition. Indeed, when the pH of the composition changes too quickly and the indicator fades before the complete drying of the composition, the user is misled and the early rewrite will cause damage to the film. Conversely, when the pH variation and the indicator discoloration occur only a certain time after the complete drying of the composition, the user unnecessarily delays the time of rewriting and thus loses time.
  • the drying time of a correction fluid film depends on several parameters such as the evaporation rate (volatility) of the solvents, the speed of penetration of the solvents into the paper, which essentially depends on the surface tension of the solvent. fluid, the viscosity of the fluid and the surface energy of the support, and the rate of formation of the film.
  • the subject of the present invention is therefore a correction fluid with a colored drying indicator, containing
  • a good solvent for the fluorescent dye preferably having a boiling point less than or equal to 100 ° C. and, preferably,
  • Pyranine (CAS 6358-69-6, Color Index No. 59040) is a yellow-green colorant, FDA approved as a dye of cosmetic compositions. This dye is not part of the colored pH indicators. Indeed, it has, over the entire pH range, a fluorescence emission whose characteristics vary too gradually so that they can serve as a pH indicator.
  • this dye to serve as a drying indicator in the compositions of the present invention is therefore not related to its state of protonation / deprotonation, but, inter alia, to its solvatochromism in relation to its solvation state in the solvent mixture of the composition.
  • the Applicant has furthermore found that when the good solvent used was water, the addition of an organic solvent chosen from the bad solvents of the fluorescent dye resulted in a modification, generally an acceleration, of the speed of penetration of the solvent phase in the paper medium on which the correction fluid was applied and that this acceleration of the penetration rate in turn had repercussions on the drying speed of the film and the coloring rate of the dye.
  • bad solvent denotes organic solvents in which the solubility of the fluorescent dye is less than or equal to 0.01 g / l at 20 ° C.
  • the good solvent has a boiling point less than or equal to 100 ° C.
  • this good solvent is preferably water, chosen for its perfect safety and its very low cost. Especially preferred is demineralised water.
  • the upper limit of the boiling point (100 ° C.) is motivated solely by the drying time of the composition. Above a boiling point of 100 ° C., the good solvent which constitutes the greater part of the composition would take a long time to evaporate, which would lead to an undesirable extension of the drying time of the film.
  • the wrong solvent must be miscible with the right solvent of the fluorescent dye.
  • the good and bad solvents do not necessarily need to be miscible with each other in all proportions, but their miscibility must be guaranteed at least for good solvent / bad solvent of the correction fluid before application and during of the drying step.
  • Examples of preferred poor solvents are C 8 -C 18 alkylene glycols such as butylene glycol and hexylene glycol, C 2 -4 lower alcohols such as ethanol, n-propanol, isopropanol, n-propanol and the like. butanol and isobutanol, and dioxane.
  • the decolorization time of the fluorescent dyes can be adjusted to the drying time of the compositions of the present invention by adding a relatively small amount of one or more bad solvents, of the order of a few to - only one hundred.
  • the ratio by weight of the good solvent to the bad solvent in the compositions of this The invention is preferably between 99/1 and 80/20, in particular between 98/2 and 90/10.
  • the composition according to the present invention preferably has a basic pH, advantageously between 7 and 11, preferably between 7.5 and 10. In this range of pK, the fluorescence intensity of the fluorescent dye is in fact particularly high and the Discoloration at the time of drying of the applied film is easily detectable to the human eye.
  • This pH can be adjusted by addition of any base, not necessarily volatile. Examples of such bases are ammonia, triethanolamine and amino-2-methyl-1-propanol (AMP).
  • the pH of the compositions according to the invention may optionally be fixed by an appropriate buffer.
  • the concentration of the fluorescent dye in the correcting fluids of the present invention is preferably between 0.01% and 1% by weight, in particular between 0.1 and 0.5% by weight, relative to the total weight of the composition.
  • the corrector fluid of the present invention contains, in addition to the fluorescent dye and the solvent phase described above, one or more adjuvants commonly used in this type of composition, chosen, for example, from film-forming polymers, fillers and opacifying pigments. preferably white pigments such as titanium dioxide, optical brighteners, dyes, anti-freeze agents such as glycerol, surfactants and preservatives.
  • one or more adjuvants commonly used in this type of composition chosen, for example, from film-forming polymers, fillers and opacifying pigments. preferably white pigments such as titanium dioxide, optical brighteners, dyes, anti-freeze agents such as glycerol, surfactants and preservatives.
  • Composition A (without a bad solvent) 0.15% by weight of Solvent Green 7, sold under the name YELLOW PYRACID G by the company COLOREY, is added to a conventional correction fluid (base fluid) having the following composition:
  • the fading time of the fluorescent dye is estimated by visual evaluation or by colorimetry (L * a * b * system).
  • composition A a film drying time of about 1 minute and a reaction time are determined. discoloration of about 3 minutes. This result is not satisfactory because the user if he waits for the complete discoloration of the film before rewriting on it loses unnecessarily about 2 minutes.
  • compositions B and C (with bad solvent)
  • composition A containing 99.85% of base fluid and 0.15% of Solvent Green 7, 4.00% of hexylene glycol (Composition B) and 4.00% of n-propanol (Composition C) are added. .
  • Composition B Drying time: 1 minute Fading time: 1 minute 10 seconds
  • Composition C is a composition having Composition C:

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Investigating Or Analysing Materials By The Use Of Chemical Reactions (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Paints Or Removers (AREA)
  • Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)

Abstract

The invention relates to a corrector fluid with a coloured drying indicator, containing (a) sodium 8-hydroxy-l, 3, 6- pyrenetrisulfonate as a fluorescent dye, (b) a good solvent for the fluorescent dye having a boiling point lower than or equal to 100°C, and preferably (c) a bad solvent for the fluorescent dye that can be mixed with the good solvent (b) for the fluorescent dye.

Description

FLUIDE CORRECTEUR AVEC INDICATEUR DE SECHAGE CORRECTIVE FLUID WITH DRYING INDICATOR
La présente invention concerne un fluide correcteur contenant un colorant fluorescent en tant qu'indicateur de séchage.The present invention relates to a correction fluid containing a fluorescent dye as a drying indicator.
Il existe sur le marché des fluides correcteurs à base aqueuse ou à base de solvants organiques volatiles, permettant de masquer des erreurs d' écriture et de réécrire ensuite, si on le souhaite, sur le film correcteur séché. Les fluides à base aqueuse, bien qu'ils soient généralement préférés pour leur moindre nocivité, présentent toutefois l'inconvénient, par rapport aux fluides correcteurs à base de solvants, de sécher beaucoup moins vite que ces derniers. Il faut compter généralement plusieurs dizaines de secondes avant de pouvoir réécrire sur le film sans l'endommager. L'utilisateur, impatient et ne disposant d'aucun indice le renseignant sur l'avancement du séchage, est susceptible d'essayer de réécrire trop tôt sur le film de masquage.There are on the market water-based or volatile organic solvent-based correction fluids, making it possible to mask writing errors and then rewrite, if desired, on the dried correction film. Water-based fluids, although generally preferred for their lesser harmfulness, however, have the disadvantage, compared to solvent-based correcting fluids, of drying much less quickly than the latter. It usually takes several tens of seconds before you can rewrite the film without damaging it. The user, impatient and having no clue informing him on the progress of drying, is likely to try to rewrite too early on the masking film.
Il est connu d'ajouter des indicateurs de séchage ou de visualisation à des compositions de papeterie dont l'utilisation implique un temps de séchage après application, telles que des fluides correcteurs. Les indicateurs de séchage utilisés dans les fluides correcteurs sont destinés à permettre à l'utilisateur d'évaluer visuellement le moment où la composition est suffisamment sèche, c'est-à-dire le moment où le film formé par Ie fluide correcteur peut recevoir une nouvelle inscription sans risque d'être endommagé . Les indicateurs de séchage, colorés et donc visibles pour l'utilisateur au moment de l'application de la composition, perdent progressivement leur couleur et deviennent idéalement totalement incolores lorsque la composition est sèche.It is known to add drying or visualization indicators to stationery compositions whose use involves a drying time after application, such as correction fluids. The drying indicators used in the correction fluids are intended to allow the user to visually evaluate the moment when the composition is sufficiently dry, that is to say the moment when the film formed by the correction fluid can receive a new registration without risk of being damaged. The drying indicators, colored and therefore visible to the user at the time of application of the composition, gradually lose their color and ideally become completely colorless when the composition is dry.
Ainsi, la demande de brevet US2005/0075419 divulgue un fluide correcteur à base d'eau contenant, en tant qu'indicateur de séchage, un indicateur pH coloré. Le fluide correcteur contient également un acide volatil ou une base volatile dont l' évaporation entraîne un changement de pH du film correcteur et par conséquent la décoloration de l'indicateur de pH .Thus, patent application US2005 / 0075419 discloses a water-based correction fluid containing, as a drying indicator, a colored pH indicator. The correction fluid also contains a volatile acid or a volatile base whose evaporation causes a change in the pH of the correction film and therefore the discoloration of the pH indicator.
Le problème des compositions contenant un indicateur coloré de pH en tant qu' indicateur de séchage est l'ajustement précis du temps de décoloration au temps de séchage réel de la composition. En effet, lorsque le pH de la composition change trop vite et l'indicateur se décolore avant le séchage complet de la composition, l'utilisateur est induit en erreur et la réécriture précoce provoquera un endommagement du film. A l'inverse, lorsque la variation de pH et la décoloration de l'indicateur n'interviennent qu'un certain temps après le séchage complet de la composition, l'utilisateur retarde inutilement le moment de réécriture et perd ainsi du temps .The problem of compositions containing a colored pH indicator as a drying indicator is the precise adjustment of the fading time to the actual drying time of the composition. Indeed, when the pH of the composition changes too quickly and the indicator fades before the complete drying of the composition, the user is misled and the early rewrite will cause damage to the film. Conversely, when the pH variation and the indicator discoloration occur only a certain time after the complete drying of the composition, the user unnecessarily delays the time of rewriting and thus loses time.
Le temps de séchage d'un film de fluide correcteur dépend de plusieurs paramètres tels que la vitesse d' évaporation (volatilité) des solvants, la vitesse de pénétration des solvants dans le papier qui dépend essentiellement de la tension de surface du fluide, de la viscosité du fluide et de l'énergie de surface du support, et la vitesse de formation du film.The drying time of a correction fluid film depends on several parameters such as the evaporation rate (volatility) of the solvents, the speed of penetration of the solvents into the paper, which essentially depends on the surface tension of the solvent. fluid, the viscosity of the fluid and the surface energy of the support, and the rate of formation of the film.
Dans le cadre de ses recherches visant à résoudre ce problème de l'ajustement précis du temps de séchage au temps de décoloration des fluides correcteurs, laAs part of his research to solve this problem of the precise adjustment of the drying time to the time of discoloration of the correcting fluids, the
Demanderesse a découvert qu' il était possible de moduler très finement le temps de décoloration de certains colorants fluorescents en les utilisant dans un système de solvants miscibles entre eux, constitué d'au moins unApplicant has discovered that it is possible to very finely modulate the fading time of certain fluorescent dyes by using them in a system of solvents which are miscible with one another, consisting of at least one
« bon » solvant du colorant et d'au moins un « mauvais » dudit colorant."Good" solvent of the dye and at least one "bad" of said dye.
La présente invention a par conséquent pour objet un fluide correcteur avec indicateur de séchage coloré, contenantThe subject of the present invention is therefore a correction fluid with a colored drying indicator, containing
(a) en tant que colorant fluorescent, du 8-hydroxy-l, 3, 6- pyrènetrisulfonate de sodium et(a) as the fluorescent dye, sodium 8-hydroxy-1,3,6-pyrenetrisulfonate and
(b) un bon solvant du colorant fluorescent, ayant de préférence un point d' ébullition inférieur ou égal à 100 0C et, de préférence,(b) a good solvent for the fluorescent dye, preferably having a boiling point less than or equal to 100 ° C. and, preferably,
(c) un mauvais solvant du colorant fluorescent, miscible avec le bon solvant (b) du colorant fluorescent.(c) a poor solvent of the fluorescent dye, miscible with the good solvent (b) of the fluorescent dye.
Le 8-hydroxy-l, 3, 6-pyrènesulfonate de sodium, également connu sous le nom de Solvent Green 7 ou deSodium 8-hydroxy-1,3,6-pyrene sulfonate, also known as Solvent Green 7 or
Pyranine (CAS 6358-69-6, Colour Index n° 59040) est un colorant de couleur vert-jaune, approuvé par la FDA en tant que colorant de compositions cosmétiques. Ce colorant ne fait pas partie des indicateurs colorés de pH. Il présente en effet, sur toute la gamme des pH, une émission de fluorescence dont les caractéristiques varient trop progressivement pour qu' ils puissent servir d'indicateur de pH.Pyranine (CAS 6358-69-6, Color Index No. 59040) is a yellow-green colorant, FDA approved as a dye of cosmetic compositions. This dye is not part of the colored pH indicators. Indeed, it has, over the entire pH range, a fluorescence emission whose characteristics vary too gradually so that they can serve as a pH indicator.
La capacité de ce colorant à servir d' indicateur de séchage dans les compositions de la présente invention n' est donc pas liée à son état de protonation/déprotonation, mais, entre autres, à son solvatochromisme en relation avec son état de solvatation dans le mélange de solvants de la composition.The ability of this dye to serve as a drying indicator in the compositions of the present invention is therefore not related to its state of protonation / deprotonation, but, inter alia, to its solvatochromism in relation to its solvation state in the solvent mixture of the composition.
La Demanderesse a en effet constaté que le 8- hydroxy-1, 3, 6-pyrènetrisulfonate de sodium, dissous dans un « bon » solvant tel que défini ci-après, était caractérisé par une intensité de fluorescence élevée qui diminuait lorsque ce bon solvant était mélangé à une certaine proportion d'un « mauvais » solvant du colorant, tel que défini ci-après.The Applicant has indeed found that the sodium 8-hydroxy-1,3,6-pyrenetrisulfonate, dissolved in a "good" solvent as defined below, was characterized by a high fluorescence intensity which decreased when this good solvent was mixed with a certain proportion of a "bad" dye solvent, as defined below.
La Demanderesse a en outre constaté que lorsque le bon solvant utilisé était l'eau, l'ajout d'un solvant organique choisi parmi les mauvais solvants du colorant fluorescent se traduisait par une modification, généralement une accélération, de la vitesse de pénétration de la phase solvant dans le support papier sur lequel le fluide correcteur était appliqué et que cette accélération de la vitesse de pénétration avait à son tour des répercussions sur la vitesse de séchage du film et la vitesse de décoloration du colorant.The Applicant has furthermore found that when the good solvent used was water, the addition of an organic solvent chosen from the bad solvents of the fluorescent dye resulted in a modification, generally an acceleration, of the speed of penetration of the solvent phase in the paper medium on which the correction fluid was applied and that this acceleration of the penetration rate in turn had repercussions on the drying speed of the film and the coloring rate of the dye.
L' idée a donc émergé de dissoudre ce colorant fluorescent dans une phase solvant contenant un mélange de ces deux types de solvants, de manière à modifier l'état de soiubilisation du colorant et/ou la vitesse de pénétration dans le support papier pour essayer de d'ajuster le temps de décoloration du colorant fluorescent précisément au temps de séchage du film de fluide correcteur. La Demanderesse a ainsi constaté qu'un choix astucieux des bon et mauvais solvants en fonction de leur volatilité et de leur pouvoir solvatant du colorant, mais surtout la variation des proportions respectives des bon et mauvais solvants dans les compositions de la présente invention permettait d'ajuster très finement le temps de décoloration du colorant fluorescent au temps de séchage réel du film déposé.The idea has thus emerged to dissolve this fluorescent dye in a solvent phase containing a mixture of these two types of solvents, so as to modify the state of self-absorption of the dye and / or the speed of penetration into the paper support to try to to adjust the coloring time of the dye fluorescent precisely at the drying time of the correction fluid film. The Applicant has thus found that a clever choice of the good and bad solvents according to their volatility and their solvating capacity of the dye, but especially the variation of the respective proportions of the good and bad solvents in the compositions of the present invention made it possible to very finely adjust the fading time of the fluorescent dye to the actual drying time of the deposited film.
Bien que les explications ci-dessus suggèrent que la présence d' un « mauvais » solvant dans les compositions de la présente invention soit une caractéristique technique essentielle des fluides correcteurs selon la présente invention, l'homme du métier comprendra que, dans certains cas particuliers, lorsque l' évaporation du seul bon solvant du colorant fluorescent provoque la décoloration de celui-ci en adéquation avec le temps de séchage de la composition, l'ajout d'un mauvais solvant est superflue. La présence d'un mauvais solvant en association avec un bon solvant est donc, certes, généralement souhaitable mais constitue toutefois une caractéristique facultative préférée des compositions de la présente invention. On entend par « bon solvant » dans la présente demande, un solvant dans lequel la solubilité du colorant fluorescent à 20 0C est au moins égale à 0,1 g/1. Le terme « mauvais solvant » désigne les solvants organiques dans lesquels la solubilité du colorant fluorescent est inférieure ou égale à 0,01 g/1 à 20 0C. Comme indiqué ci-dessus, le bon solvant a un point d'ébullition inférieur ou égal à 100 0C. Bien entendu ce bon solvant est de préférence de l'eau, choisie pour sa parfaite innocuité et son très faible coût. On préfère en particulier de l'eau déminéralisée. La limite supérieure du point d'ébullition (100 0C) est motivée uniquement par la durée de séchage de la composition. Au-delà d'un point d'ébullition de 100 0C, le bon solvant qui constitue la plus grande partie de la composition, mettrait excessivement longtemps à s'évaporer ce qui entraînerait un allongement indésirable du temps de séchage du film.Although the foregoing explanations suggest that the presence of a "bad" solvent in the compositions of the present invention is an essential technical feature of the correcting fluids according to the present invention, those skilled in the art will understand that in some particular cases when the evaporation of the only good solvent of the fluorescent dye causes the discoloration thereof in adequacy with the drying time of the composition, the addition of a bad solvent is superfluous. The presence of a bad solvent in combination with a good solvent is, of course, generally desirable but is, however, a preferred optional feature of the compositions of the present invention. The term "good solvent" in the present application means a solvent in which the solubility of the fluorescent dye at 20 ° C. is at least equal to 0.1 g / l. The term "bad solvent" denotes organic solvents in which the solubility of the fluorescent dye is less than or equal to 0.01 g / l at 20 ° C. As indicated above, the good solvent has a boiling point less than or equal to 100 ° C. Of course this good solvent is preferably water, chosen for its perfect safety and its very low cost. Especially preferred is demineralised water. The upper limit of the boiling point (100 ° C.) is motivated solely by the drying time of the composition. Above a boiling point of 100 ° C., the good solvent which constitutes the greater part of the composition would take a long time to evaporate, which would lead to an undesirable extension of the drying time of the film.
Le mauvais solvant doit être miscible avec le bon solvant du colorant fluorescent. Les bon et mauvais solvants n'ont pas forcément besoin d'être miscibles l'un avec l'autre en toutes proportions, mais leur miscibilité doit être garantie au moins pour les rapports bon solvant/mauvais solvant du fluide correcteur avant application et au cours de l'étape de séchage.The wrong solvent must be miscible with the right solvent of the fluorescent dye. The good and bad solvents do not necessarily need to be miscible with each other in all proportions, but their miscibility must be guaranteed at least for good solvent / bad solvent of the correction fluid before application and during of the drying step.
On peut citer à titre d'exemples de mauvais solvants préférés les alkylèneglycols en CVg tels que le butylèneglycol et l' hexylèneglycol, les alcools inférieurs en C2-4 tels que l'éthanol, le n-propanol, 1' isopropanol, le n-butanol et l' isobutanol, et le dioxane . Comme expliqué ci-dessus, le temps de décoloration des colorants fluorescents peut être ajusté au temps de séchage des compositions de la présente invention par ajout d'une quantité relativement faible d'un ou de plusieurs mauvais solvants, de l'ordre de quelques pour- cent seulement. Le rapport en poids du bon solvant au mauvais solvant dans les compositions de la présente invention est compris de préférence entre 99/1 et 80/20, en particulier entre 98/2 et 90/10.Examples of preferred poor solvents are C 8 -C 18 alkylene glycols such as butylene glycol and hexylene glycol, C 2 -4 lower alcohols such as ethanol, n-propanol, isopropanol, n-propanol and the like. butanol and isobutanol, and dioxane. As explained above, the decolorization time of the fluorescent dyes can be adjusted to the drying time of the compositions of the present invention by adding a relatively small amount of one or more bad solvents, of the order of a few to - only one hundred. The ratio by weight of the good solvent to the bad solvent in the compositions of this The invention is preferably between 99/1 and 80/20, in particular between 98/2 and 90/10.
La composition selon la présente invention a de préférence un pH basique, compris avantageusement entre 7 et 11, de préférence entre 7,5 et 10. Dans cette gamme de pK, l'intensité de fluorescence du colorant fluorescent est en effet particulièrement élevée et la décoloration au moment du séchage du film appliqué est facilement détectable pour l'œil humain. Ce pH peut être ajusté par addition d'une base quelconque, pas nécessairement volatile. On peut citer à titre d'exemple de telles bases l'ammoniaque, la triéthanolamine et l' amino-2-méthyl-l- propanol (AMP). Le pH des compositions selon l'invention peut éventuellement être fixé par un tampon approprié. La concentration du colorant fluorescent dans les fluides correcteurs de la présente invention est de préférence comprise entre 0,01 % et 1 % en poids, en particulier entre 0,1 et 0,5 % en poids, rapportée au poids total de la composition. Le fluide correcteur de la présente invention contient, en plus du colorant fluorescent et de la phase solvant décrits ci-dessus, un ou plusieurs adjuvants utilisés couramment dans ce type de composition, choisis par exemple parmi les polymères filmogènes, les charges, les pigments opacifiants, de préférence les pigments blancs tels que le dioxyde de titane, les azurants optiques, les colorants, les agents antigel tels que le glycérol, les tensioactifs et les agents conservateurs. ExempleThe composition according to the present invention preferably has a basic pH, advantageously between 7 and 11, preferably between 7.5 and 10. In this range of pK, the fluorescence intensity of the fluorescent dye is in fact particularly high and the Discoloration at the time of drying of the applied film is easily detectable to the human eye. This pH can be adjusted by addition of any base, not necessarily volatile. Examples of such bases are ammonia, triethanolamine and amino-2-methyl-1-propanol (AMP). The pH of the compositions according to the invention may optionally be fixed by an appropriate buffer. The concentration of the fluorescent dye in the correcting fluids of the present invention is preferably between 0.01% and 1% by weight, in particular between 0.1 and 0.5% by weight, relative to the total weight of the composition. The corrector fluid of the present invention contains, in addition to the fluorescent dye and the solvent phase described above, one or more adjuvants commonly used in this type of composition, chosen, for example, from film-forming polymers, fillers and opacifying pigments. preferably white pigments such as titanium dioxide, optical brighteners, dyes, anti-freeze agents such as glycerol, surfactants and preservatives. Example
Composition A (sans mauvais solvant) On ajoute 0,15 % en poids de Solvent Green 7, commercialisé sous la dénomination JAUNE PYRACIDE G par la société COLOREY, à un fluide correcteur classique (fluide de base) ayant la composition suivante :Composition A (without a bad solvent) 0.15% by weight of Solvent Green 7, sold under the name YELLOW PYRACID G by the company COLOREY, is added to a conventional correction fluid (base fluid) having the following composition:
Eau distillée 10 %Distilled water 10%
Résine (ACRYLIC LATEX 35 % SOLIDS) 25 %Resin (ACRYLIC LATEX 35% SOLIDS) 25%
TiO2 37 %TiO 2 37%
CaCO3 13 % Base q.s.p. pH 8 - 8,5 Autres additifs 12 % (conservateurs, agent anti-mousse, tensioactif, azurant optique)CaCO 3 13% Base qs pH 8 - 8,5 Other additives 12% (preservatives, antifoaming agent, surfactant, optical brightener)
On applique un film d'une épaisseur d'environ 75 μm sur du papier normalisé (Papier Baumgartner ISO 12757) à l'aide d'un filmographie {hand coater) On laisse sécher le film à une température de 20 0C, puis on note le temps au bout duquel il est possible de réécrire sur le film séché avec un stylo à bille (= temps de séchage) .A film with a thickness of about 75 μm is applied to standard paper (Baumgartner ISO 12757 paper) using a filmography (hand coater). The film is allowed to dry at a temperature of 20 ° C., then note the time after which it is possible to rewrite on the dried film with a ballpoint pen (= drying time).
Le temps de décoloration du colorant fluorescent est estimé par évaluation visuelle ou encore par colorimétrie (Système L*a*b*).The fading time of the fluorescent dye is estimated by visual evaluation or by colorimetry (L * a * b * system).
On détermine ainsi pour la composition A un temps de séchage du film d'environ 1 minute et un temps de décoloration d'environ 3 minutes. Ce résultat n'est pas satisfaisant car l'utilisateur s'il attend la décoloration complète du film avant de réécrire sur celui-ci perd inutilement environ 2 minutes.Thus, for composition A, a film drying time of about 1 minute and a reaction time are determined. discoloration of about 3 minutes. This result is not satisfactory because the user if he waits for the complete discoloration of the film before rewriting on it loses unnecessarily about 2 minutes.
Compositions B et C (avec mauvais solvant)Compositions B and C (with bad solvent)
On ajoute à la composition A contenant 99,85 % de fluide de base et 0,15 % de Solvent Green 7, respectivement 4,00 % d' hexylèneglycol (Composition B) et 4,00 % de n-propanol (Composition C).To the composition A containing 99.85% of base fluid and 0.15% of Solvent Green 7, 4.00% of hexylene glycol (Composition B) and 4.00% of n-propanol (Composition C) are added. .
Lorsqu'on mesure le temps de séchage et le temps de décoloration de ces deux compositions dans les mêmes conditions que pour la Composition A, on obtient les résultats suivants :When the drying time and the bleaching time of these two compositions are measured under the same conditions as for Composition A, the following results are obtained:
Composition B : Temps de séchage : 1 minute Temps de décoloration : 1 minute 10 secondesComposition B: Drying time: 1 minute Fading time: 1 minute 10 seconds
Composition C :Composition C:
Temps de séchage : 50 secondesDrying time: 50 seconds
Temps de décoloration : 1 minute 10 secondesFade time: 1 minute 10 seconds
On constate que, pour les deux compositions, l'écart entre le temps de séchage et le temps de décoloration est sensiblement réduit par rapport à celui observé pour la Composition A exempte de solvant secondaire (« mauvais » solvant) . On peut constater par ailleurs que l'ajout, à la composition à base d'eau, d'une faible quantité (4 %) d' hexylèneglycol (point d'ébullition 197 0C) n'augmente pas le temps de séchage de la composition finale. Par contre, l'addition de 4 % seulement d'un mauvais solvant relativement plus volatil que l'eau (n-propanol, point d'ébullition 97 0C) diminue avantageusement d'environ 20 % le temps de séchage de cette formule (Composition C) à base d'eau. It is found that for both compositions, the difference between the drying time and the bleaching time is substantially reduced compared to that observed for Composition A devoid of secondary solvent ("bad" solvent). It can also be seen that the addition to the water-based composition, a small amount (4%) of hexylene glycol (boiling point 197 ° C.) does not increase the drying time of the final composition. On the other hand, the addition of only 4% of a bad solvent which is relatively more volatile than water (n-propanol, boiling point 97 ° C.) advantageously reduces the drying time of this formula by approximately 20% ( Composition C) based on water.

Claims

REVENDICATIONS
1. Fluide correcteur avec indicateur de séchage coloré, contenant1. Corrective fluid with colored drying indicator, containing
(a) en tant que colorant fluorescent, du 8-hydroxy-l, 3, 6- pyrènetrisulfonate de sodium et(a) as the fluorescent dye, sodium 8-hydroxy-1,3,6-pyrenetrisulfonate and
(b) un bon solvant du colorant fluorescent, dans lequel la solubilité du colorant fluorescent à 20 0C est au moins égale à 0,1 g/1, ayant de préférence un point d'ébullition inférieur ou égal à 100 0C et,(b) a good solvent for the fluorescent dye, in which the solubility of the fluorescent dye at 20 ° C. is at least 0.1 g / l, preferably having a boiling point of less than or equal to 100 ° C. and
(c) un mauvais solvant du colorant fluorescent, dans lequel la solubilité du colorant fluorescent est inférieure ou égale à 0,01 g/1 à 20 0C, miscible avec le bon solvant (b) du colorant fluorescent.(c) a poor solvent for the fluorescent dye, in which the solubility of the fluorescent dye is less than or equal to 0.01 g / l at 20 ° C., miscible with the good solvent (b) of the fluorescent dye.
2. Fluide correcteur selon la revendication 1, caractérisée par le fait que la concentration du colorant fluorescent est comprise entre 0,01 % et 1 % en poids, de préférence entre 0,1 et 0,5 % en poids, rapportée au poids total de la composition.2. Correction fluid according to claim 1, characterized in that the concentration of the fluorescent dye is between 0.01% and 1% by weight, preferably between 0.1 and 0.5% by weight, based on the total weight of the composition.
3. Fluide correcteur selon la revendication 1 ou 2, caractérisé par le fait que le bon solvant est de l'eau.3. Corrector fluid according to claim 1 or 2, characterized in that the good solvent is water.
4. Fluide correcteur selon l'une quelconque des revendications précédentes, caractérisé par le fait que le mauvais solvant est choisi parmi les alkylèneglycols en C4-SS, les alcools inférieurs en C2-4 et le dioxane.4. The correction fluid according to any one of the preceding claims, characterized in that the poor solvent is selected from alkylene, C 4 -S S, lower alcohols C 2-4 and dioxane.
5. Fluide correcteur selon l'une quelconque des revendications précédentes, caractérisé par le fait que le rapport en poids du bon solvant au mauvais solvant est compris entre 99/1 et 80/20, de préférence entre 98/2 et 90/10.5. Corrector fluid according to any one of the preceding claims, characterized in that the weight ratio of the good solvent to the poor solvent is between 99/1 and 80/20, preferably between 98/2 and 90/10.
6. Fluide correcteur selon l'une quelconque des revendications précédentes, caractérisé par le fait que la composition a un pH compris entre 7 et 11, de préférence entre 7,5 et 10. 6. Correction fluid according to any one of the preceding claims, characterized in that the composition has a pH of between 7 and 11, preferably between 7.5 and 10.
EP07870381A 2006-12-11 2007-12-03 Corrector fluid with drying indicator Withdrawn EP2097489A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0610787A FR2909680B1 (en) 2006-12-11 2006-12-11 CORRECTIVE FLUID WITH DRYING INDICATOR
PCT/FR2007/052433 WO2008074956A2 (en) 2006-12-11 2007-12-03 Corrector fluid with drying indicator

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EP2097489A2 true EP2097489A2 (en) 2009-09-09

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JP (1) JP2010512443A (en)
CN (1) CN101605858B (en)
BR (1) BRPI0720214A2 (en)
CA (1) CA2671761A1 (en)
FR (1) FR2909680B1 (en)
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ES2535459T3 (en) * 2008-07-03 2015-05-11 Bostik, Inc. Hot melt moisture indicator adhesive composition containing UV fluorescent agent

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US5232494A (en) * 1992-07-31 1993-08-03 Binney & Smith Inc. Color changing compositions
US5478382A (en) * 1992-07-31 1995-12-26 Binney & Smith Inc. Color changing compositions for use on non-porous surfaces
US5498282A (en) * 1992-07-31 1996-03-12 Binney & Smith Inc. Color changing pan paint compositions
US6517622B1 (en) * 2000-09-05 2003-02-11 Kodak Polychrome Graphics, Llc Additive correction fluid for metal printing forms
FR2818655B1 (en) * 2000-12-22 2004-05-14 Conte COLORED LIQUID COMPOSITION FOR HIGHLIGHTER
WO2002061003A1 (en) * 2001-01-30 2002-08-08 Schwan-Stabilo Schwanhäusser Gmbh & Co. Marking liquid
US6946023B2 (en) * 2002-06-06 2005-09-20 Avery Dennison Corporation Smear-resistant ink compositions
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FR2909680A1 (en) 2008-06-13
CN101605858A (en) 2009-12-16
CN101605858B (en) 2012-09-26
FR2909680B1 (en) 2010-12-10
MX2009006172A (en) 2009-08-25
US20100163799A1 (en) 2010-07-01
CA2671761A1 (en) 2008-06-26
WO2008074956A2 (en) 2008-06-26
BRPI0720214A2 (en) 2013-12-24
US8182595B2 (en) 2012-05-22
WO2008074956A3 (en) 2008-09-12
JP2010512443A (en) 2010-04-22

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