WO2005040290A1 - Color changing correction fluid - Google Patents
Color changing correction fluid Download PDFInfo
- Publication number
- WO2005040290A1 WO2005040290A1 PCT/US2004/026118 US2004026118W WO2005040290A1 WO 2005040290 A1 WO2005040290 A1 WO 2005040290A1 US 2004026118 W US2004026118 W US 2004026118W WO 2005040290 A1 WO2005040290 A1 WO 2005040290A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- color changing
- correction fluid
- fluid
- mixtures
- changing correction
- Prior art date
Links
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
- correction fluid compositions are disclosed. More specifically, correction fluid compositions are disposed which change color upon drying to indicate to the user when the correction fluid has sufficiently dried and therefore can be written or printed upon. Background of the Related Art Correction fluids are used for correcting handwritten, typewritten, photocopied and printed markings on paper, cardboard and other surfaces. Generally, such correction fluids are applied to the surface in a liquid form and then subsequently allowed to dry to form a film which covers the incorrect markings on the surface.
- the coating of correction fluid can then be written upon to form the corrected marking.
- Important characteristics for any correction fluid is the ability to provide a film or coalesced residue on the surface which can both effectively cover the incorrect marking and provide an effective service for receiving the correcting marking.
- the film covering the marking should be strongly bonded to the paper or substrate surface but also should be sufficiently flexible so that the film will not be removed or cracked during normal handling of the paper. Additionally, the correction fluid should not interact with the corrected marking which would result in discoloration of the resulting film or a "bleed through" of the incorrect marking through the correction fluid layer.
- Another important characteristic of any correction fluid is the drying rate of the fluid. Specifically, the drying rate should be as rapid as possible so that the correction can be made relatively quickly.
- Typical correction fluids having a drying time ranging from 30 to 40 seconds depending upon the thickness of the coating applied.
- Other desired performance characteristics include good storage ability, good flow and viscosity characteristics and the ability of the fluid to be mixed quickly and/or remain in a suspension for long periods of time.
- Early correction fluids included organic solvents but in recent times water-based correction fluids have been utilized because they are better for the environment.
- water-based correction fluids include a pigment, e.g., titanium dioxide, and a film forming polymer, such as latex.
- a problem associated with current water-based correction fluids is the inability for the consumer to determine when the correction fluid has sufficiently dried so as to enable the consumer to write over it. Currently, the consumer is forced to employ a trial and error technique.
- JP 6049397 which discloses a correction fluid formulation that includes water, a volatile organic solvent such as ethanol or acetone and a pH color changing indicator.
- the formulation relies upon the reaction with carbon dioxide in air that results in a pH change (the mixture becomes less basic or more acidic) to provide the lowering of the pH resulting in the color change of the pH color changing indicator.
- two different solvents are required, water and a polar organic solvent, and the reliance upon the interaction of the mixture with carbon dioxide for producing the color change is slow and unreliable. Therefore, there is a need for an improved correction fluid formulation which provides a reliable visual indication to the user when the correction fluid is sufficiently dry and ready to receive written or printed corrections.
- an improved correction fluid which changes color upon drying to provide the user with a reliable indication that the correction fluid is sufficiently dry and ready to receive corrected markings in the form of writing or printing.
- an improved color changing correction fluid comprises water as the sole solvent, either a volatile base or a volatile acid, and a color changing pH indicator.
- the color changing correction fluid does not include substantial amounts of organic solvents of either a polar or non-polar nature.
- a volatile base is employed and is selected from the group consisting of tri-ethylamine (TEA), 2-amino-2-mefhyl-l-propanol (AMP), dimethylaminopropylamine (DMAPA), N,N-dimethylefhanolamine (DMEA), ammonia and mixtures thereof.
- a volatile acid is used which comprises acetic acid and/or another volatile acid such as formic acid and mixtures of volatile acids.
- the color changing pH indicator is selected from the group consisting of pentamefhoxy red, methyl red, methyl yellow, phenolphthalein, thymophthalein, p-naphtholbenzein, 4-nitrophenol, 3-nitrolphenol, o-cresolphthalein, m-cresol red, thymol blue, m-cresol purple and mixtures thereof.
- the color changing correction fluid further comprises a film-forming polymer.
- the film-forming polymers are stable at a high pH of about 13 down to a low pH of about 4, has a solids level ranging from about 35% to about 65% and a glass transition temperature (T g ) ranging from aboxit -35 to about 100°C.
- the film-forming polymer is selected from the group consisting styrene acrylic latexes, acrylic latexes, vinyl acetate ethylene latexes and mixtures thereof.
- a coalescent aid can be used to enhance the film-forming process although some polymers disclosed herein can form films without coalescent aids.
- plasticizers are preferred and can be selected from the group consisting of dipropylene glycol dibenzoate, isodecyl benzoate, ditridecylphalate, and mixtures thereof.
- titanium dioxide is a preferred pigment and can constitute from about 20 to about 60 wt% of the fluid mixture.
- Additional extender pigments can be utilized such as aluminum silicate, calcium carbonate, magnesium silicate, calcium silicate, potassium aluminum silicate and mixtures thereof.
- the viscosity of the resulting correction fluid at 25°C is preferably between 5 and 20,000 cps. However, this range can be extended, depending on the particular applicator utilized, i.e., a brush or stylus.
- the viscosity at 25°C could range from about 10 to about 800 cps for brush or foam applicators, from about 5 to about 100 cps for correction markers and from about 20 to about 20,000 cps for pens that require the correction fluid to be squeezed through a stylus from a flexible reservoir.
- the solids level in the preferred color changing correction fluids range from about 45 to about 75% by weight, and more preferably from about 55 to about 70% by weight.
- Additional additives such as biocides, defoamers, surface tension modifies, pigment dispersants, surfactants, anti-settling agents, freeze-thaw stabilizers, thickeners and other additives can be utilized that are known to those skilled in the art.
- An improved color changing correction fluid made in accordance with this disclosure includes water as the primary solvent, thereby avoiding the need for organic solvents and the environmental concerns associated therewith, a volatile base or acid and a color changing pH indicator.
- Preferred volatile bases include diethylenetriamine (DETA), dimethylaminopropylamine (DMAPA), methoxypropylamine (MPA), triethylamine (TEA), 2-amino-2-methyl-l-propanol (AMP), N,N-dimethylethanolamine (DMEA), ammonia and mixtures thereof.
- a preferred volatile base is acetic acid because of its relative volatility, low cost, environmental friendliness and lack of unpleasant odors associated therewith.
- the volatile base or acid constitutes from about 0.1 to about 10 wt% of the fluid mixture.
- a mixture of different amines can be advantageous.
- the combination of ammonia which is a quickly evaporating amine with DMEA, which is slowly evaporating amine can be effective.
- a combination of TEA as a quickly evaporating amine with AMP as a slowly evaporating amine can be utilized.
- Preferred color changing pH indicators include pentamethoxy red, methyl red, methyl yellow, phenolphfhalein, thymophthalein, p-naphtholbenzein, 4- nitrophenol, 3-nitrolphenol, o-cresolphthalein, m-cresol red, thymol blue, m-cresol purple and mixtures thereof.
- the correction fluid should also include a film-forming polymer and possibly a film-forming aid or coalescent aid. Suitable film-forming polymers are stable at a pH of up to about 13 and a pH of down to about 4, have a solid level from about 35% to about 65% in a glass transition temperature (T g ) ranging from about -35 to about 100°C.
- Suitable film-forming polymers include Pliotech TM 7822 or 7217 (acrylic latexes sold by Eliokem), Joncroyo TM 537, 617, 1907, 2561, 2646 or 2660 (acrylic latexes sold by Johnson Polymers), Jonrez TM 2051 , 2080, 2008 or 2005 (styreneacrylic latexes sold by Westvaco), Durvace TM FT-3020 (vinyl acetate efhylenes latex sold by Reichhold), Ucar latexes (sold by Don Chemical) and other latexes meeting conditions aforementioned.
- Suitable coalescent aids include Benzoflex TM 9-88 (dipropylene glycol dibenzoate sold by Nelsicol Chemical Corp.) Nelate M 262 and 368 (isodecyl benzoate, also sold by Nelsicol Chemical Corp), Texanol (ester alcohol sold by Eastman Chemical), Jayflex TM (ditridecyl phthalate sold Exxon Mobil Chemical).
- the preferred pigment is titanium dioxide in an amount ranging from about 20 to about 60 wt%, preferably from about 35 to about 50 wt%.
- Suitable titanium dioxide pigments include Ti-Pure TM R-931 , 902, 706 (sold by DuPon ), Tioide TM R-XL, TR90 (sold by Huntsman), Kronos TM 2131 (sold by Kronos), and Tipaque R-930, R-980 (sold by Ishihara) and many other titanium dioxide pigments meeting conditions aforesaid.
- An extender pigment may also be utilized and suitable extender pigments include, but are not limited to aluminum silicate, calcium carbonate, magnesium silicate, calcium silicate, potassium aluminum silicate and mixtures thereof. Formulation of the color changing correction fluid will be best illustrated by the following examples.
- Example 1 137.5 g Kronos 2131 titanium dioxide pigments was dispersed in 55g water and proper amount of pigment dispersants and defoamers. Then under mixing, 40g of Pliotec 7822 latex, 2g TXIB coalescent, 2g AMP-95 and 2g DMAPA, 0.6 g phenolphthalein pH indicator and other additives were added. The resulting fluid can be applied to paper for correction by either brush and/or foam applicator.
- Example 2 In 60 g water with pigment dispersant and defoamer, 137.5g TiPure R- 902 titanium dioxide was added and dispersed.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP04780887A EP1668083A1 (en) | 2003-10-02 | 2004-08-12 | Color changing correction fluid |
CN2004800288121A CN1894348B (en) | 2003-10-02 | 2004-08-12 | Color changing correction fluid |
MXPA06003757A MXPA06003757A (en) | 2003-10-02 | 2004-08-12 | Color changing correction fluid. |
CA002540743A CA2540743A1 (en) | 2003-10-02 | 2004-08-12 | Color changing correction fluid |
JP2006533847A JP2007507585A (en) | 2003-10-02 | 2004-08-12 | Color-changing correction fluid |
AU2004284390A AU2004284390A1 (en) | 2003-10-02 | 2004-08-12 | Color changing correction fluid |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US50809503P | 2003-10-02 | 2003-10-02 | |
US60/508,095 | 2003-10-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005040290A1 true WO2005040290A1 (en) | 2005-05-06 |
Family
ID=34519998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2004/026118 WO2005040290A1 (en) | 2003-10-02 | 2004-08-12 | Color changing correction fluid |
Country Status (10)
Country | Link |
---|---|
US (1) | US7442725B2 (en) |
EP (1) | EP1668083A1 (en) |
JP (1) | JP2007507585A (en) |
KR (1) | KR20060112648A (en) |
CN (1) | CN1894348B (en) |
AU (1) | AU2004284390A1 (en) |
CA (1) | CA2540743A1 (en) |
MX (1) | MXPA06003757A (en) |
TW (1) | TW200517449A (en) |
WO (1) | WO2005040290A1 (en) |
Cited By (4)
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---|---|---|---|---|
FR2907126A1 (en) * | 2006-10-12 | 2008-04-18 | Soppec Soc Par Actions Simplif | Device for marking of a painting, comprises a colored indicator adapted to reveal a first color i.e. different from the basic color of the indicator under the action of a first revealing medium, incorporated in a painting |
JP2009503245A (en) * | 2005-08-04 | 2009-01-29 | サンフォード エル.ピー. | Correction fluid |
CN102925135A (en) * | 2012-10-18 | 2013-02-13 | 金红叶纸业集团有限公司 | Color-change powder and color-change liquid applying same |
US9109126B2 (en) | 2013-07-22 | 2015-08-18 | Sanford, L.P. | Ink compositions comprising colorant particles containing polymeric particles |
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US7910531B2 (en) * | 2004-06-17 | 2011-03-22 | C2C Technologies Llc | Composition and method for producing colored bubbles |
US20060222675A1 (en) * | 2005-03-29 | 2006-10-05 | Sabnis Ram W | Personal care compositions with color changing indicator |
US20060236470A1 (en) * | 2005-03-29 | 2006-10-26 | Sabnis Ram W | Novelty compositions with color changing indicator |
US20060257439A1 (en) * | 2005-03-29 | 2006-11-16 | Sabnis Ram W | Cleansing compositions with color changing indicator |
US20060222601A1 (en) * | 2005-03-29 | 2006-10-05 | Sabnis Ram W | Oral care compositions with color changing indicator |
US20070010400A1 (en) * | 2005-07-06 | 2007-01-11 | Sabnis Ram W | Use of color changing indicators in consumer products |
FR2909680B1 (en) * | 2006-12-11 | 2010-12-10 | Bic Soc | CORRECTIVE FLUID WITH DRYING INDICATOR |
CN102161847A (en) * | 2011-02-25 | 2011-08-24 | 浙江大学宁波理工学院 | Color-changeable correction glue stick and preparation method thereof |
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JP7219943B2 (en) * | 2018-03-13 | 2023-02-09 | 株式会社トンボ鉛筆 | pressure sensitive transfer correction tape |
US11680181B1 (en) | 2021-09-29 | 2023-06-20 | W. Thomas Forlander | Industrial coating with color-change responsivity to acid and base contact |
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- 2004-02-11 US US10/776,860 patent/US7442725B2/en not_active Expired - Fee Related
- 2004-08-12 JP JP2006533847A patent/JP2007507585A/en active Pending
- 2004-08-12 KR KR1020067008298A patent/KR20060112648A/en not_active Application Discontinuation
- 2004-08-12 WO PCT/US2004/026118 patent/WO2005040290A1/en active Application Filing
- 2004-08-12 AU AU2004284390A patent/AU2004284390A1/en not_active Abandoned
- 2004-08-12 CA CA002540743A patent/CA2540743A1/en not_active Abandoned
- 2004-08-12 CN CN2004800288121A patent/CN1894348B/en not_active Expired - Fee Related
- 2004-08-12 EP EP04780887A patent/EP1668083A1/en not_active Withdrawn
- 2004-08-12 MX MXPA06003757A patent/MXPA06003757A/en unknown
- 2004-08-30 TW TW093126087A patent/TW200517449A/en unknown
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009503245A (en) * | 2005-08-04 | 2009-01-29 | サンフォード エル.ピー. | Correction fluid |
US8110615B2 (en) | 2005-08-04 | 2012-02-07 | Sanford, L.P. | Correction fluids |
FR2907126A1 (en) * | 2006-10-12 | 2008-04-18 | Soppec Soc Par Actions Simplif | Device for marking of a painting, comprises a colored indicator adapted to reveal a first color i.e. different from the basic color of the indicator under the action of a first revealing medium, incorporated in a painting |
CN102925135A (en) * | 2012-10-18 | 2013-02-13 | 金红叶纸业集团有限公司 | Color-change powder and color-change liquid applying same |
US9109126B2 (en) | 2013-07-22 | 2015-08-18 | Sanford, L.P. | Ink compositions comprising colorant particles containing polymeric particles |
Also Published As
Publication number | Publication date |
---|---|
US7442725B2 (en) | 2008-10-28 |
JP2007507585A (en) | 2007-03-29 |
CA2540743A1 (en) | 2005-05-06 |
EP1668083A1 (en) | 2006-06-14 |
US20050075419A1 (en) | 2005-04-07 |
CN1894348B (en) | 2010-12-22 |
AU2004284390A1 (en) | 2005-05-06 |
TW200517449A (en) | 2005-06-01 |
MXPA06003757A (en) | 2006-06-23 |
CN1894348A (en) | 2007-01-10 |
KR20060112648A (en) | 2006-11-01 |
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