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US20040040682A1 - Pigment compositions and process of shading - Google Patents

Pigment compositions and process of shading Download PDF

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Publication number
US20040040682A1
US20040040682A1 US10621801 US62180103A US2004040682A1 US 20040040682 A1 US20040040682 A1 US 20040040682A1 US 10621801 US10621801 US 10621801 US 62180103 A US62180103 A US 62180103A US 2004040682 A1 US2004040682 A1 US 2004040682A1
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Prior art keywords
pigment
blue
weight
composition
mixture
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Abandoned
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US10621801
Inventor
Ian Knowles
Robert Watsfeldt
Kjell Kumlin
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Knowles Ian William
Robert Watsfeldt
Kumlin Kjell Erik
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; MISCELLANEOUS COMPOSITIONS; MISCELLANEOUS APPLICATIONS OF MATERIALS
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B67/00Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C09B67/0033Blends of pigments; Mixtured crystals; Solid solutions
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/28Colorants ; Pigments or opacifying agents
    • D21H21/285Colorants ; Pigments or opacifying agents insoluble
    • DTEXTILES; PAPER
    • D21PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21HPULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/10Packing paper

Abstract

Compositions comprising
a) a mixture of
i) C.1. Pigment Violet 19 together with either C.I. Pigment Blue 15 or C.I. Pigment Blue 60, or
ii) C.I. Pigment Red 177 together with either C.I. Pigment Blue 15 or C.I. Pigment Blue 60,
and
b) a dispersant,
c) optionally a biocide, and
d) water.
A process for shading of paper using said compositions or by applying separate pigment dispersions of
a) C.I. Pigment Violet 19 and either C.I. Pigment Blue 15 or C.I. Pigment Blue 60, or
b) C.I. Pigment Red 177 and either C.I. Pigment Blue 15 or C.I. Pigment Blue 60.

Description

  • [0001]
    The present invention relates to compositions comprising special pigments which meet BGVV specifications for food packaging materials.
  • [0002]
    It is the object of the present invention to provide a pigment composition which can be used for the shading of food packaging materials, especially such materials which are made of paper.
  • [0003]
    In one aspect, the invention relates to a composition comprising
  • [0004]
    a) a mixture of C.I. Pigment Violet 19 together with either C.I. Pigment Blue 15 or C.I. Pigment Blue 60,
  • [0005]
    b) a dispersant,
  • [0006]
    c) optionally a biocide, and
  • [0007]
    d) water.
  • [0008]
    One preferred form of this composition comprises a mixture of C.I. Pigment Violet 19 together with C.I. Pigment Blue 15, in which mixture the amount by weight of C.I. Pigment Violet 19 is greater than 50%, based on the weight of the mixture of pigments. The mixture of pigments contains usually 60% to 95% by weight, preferably 70% to 90% by weight, of C.I. Pigment Violet 19, based on the weight of the mixture of pigments. Particularly preferred are compositions wherein the mixture of pigments contains 75% to 85 % by weight of C.I. Pigment Violet 19 and 15% to 25% by weight of C.I. Pigment Blue 15.
  • [0009]
    A further preferred form of this composition comprises a mixture of C.I. Pigment Violet 19 together with C.I. Pigment Blue 15 or C.I. Pigment Blue 60, in which mixture the amount by weight of C.I. Pigment Violet 19 is less than 50%, based on the weight of the mixture of pigments. Particularly preferred compositions comprise a mixture of pigments containing C.I. Pigment Violet 19 together with C.I. Pigment Blue 60. The mixture of pigments contains usually 30% to I ss than 50% by weight, preferably 40% to less than 50% by weight of C.I. Pigment Violet 19, based on the weight of the mixture of pigments.
  • [0010]
    In a second aspect, this invention relates to a composition comprising
  • [0011]
    a) a mixture of C.I. Pigment Red 177 together with C.I. Pigment Blue 15 or C.I. Pigment Blue 60,
  • [0012]
    b) a dispersant,
  • [0013]
    c) optionally a biocide, and
  • [0014]
    d) water.
  • [0015]
    Particularly preferred are compositions that include a mixture of pigments containing C.I. Pigment Red 177 together with C.I. Pigment Blue 60. The mixture of pigments contains usually below 60% by weight, preferably below 50% by weight of C.I. Pigment Red 177, based on the weight of the mixture of pigments. Highly preferred are mixtures of pigments which contain 20 or 25 to 40% by weight of C.I. Pigment Red 177 and 60 to 75% by weight of C.I. Pigment Blue 60.
  • [0016]
    The compositions in all aspects of the invention contain preferably 0.1 to 40%, more preferably 10 to 30% of pigments, most preferably around 20% of pigments, based on the weight of the composition.
  • [0017]
    The size of the pigments can range from a few nanometres to several hundreds of microns. Preferred is an average size distribution of 0.01 to 1 micron.
  • [0018]
    The dispersant usually is present in the composition in an amount of 0.1 to 30%, preferably 0.1 to 8% by weight, most preferably 3 to 6%, based on the weight of the composition.
  • [0019]
    Preferred dispersants are for example polyacrylic acid, polymethacrylic acid, polymaleic anhydride, polyurethane, polyvinylether, polyvinylalcohol, polyalkylene glycol, polyethylene oxide, cellulose derivatives, polyimine, polyvinylpyridine, or copolymers thereof, or copolymers such as copolymers of acrylic acid with styrene, acrylonitrile, vinylacetate, vinylphosphonate, vinylpropionate, vinylchloride, itaconic acid or maleic anhydride, or a mixture thereof. Suitable polymeric derivatives are for example ethoxylated or propoxylated fatty amines such as ethoxylated cocoalkyl, oleyl or soyaalkyl amines; ethoxylated or propoxylated fatty quaternary salts such as ethoxylated cocoalkyltrimethyl ammonium chloride; ethoxylated fatty amides such as ethoxylated oleamides; alkyl-, cycloalkyl- or alkylaryl-oxypoly(ethylenoxy)ethanol, cycloalkyloxypoly(ethylenoxy)laurate or oleate, polyethylene glycol 400 laurate or oleate, alkyl-, cycloalkyl- or alkylaryl-poly(ethylenoxy)carboxylate or phosphonate. An especially preferred cycloalkyloxypoly(ethylenoxy) laurate or oleate is for example a poly(ethylenoxy)sorbitan laurate or oleate. Particularly preferred dispersants include polymers of aromatic sulphonic acids with formaldehyde, and salts thereof. Typically the dispersants have molecular weights in the range 1000 to 10,000, preferably 2,000 to 5,000, especially 2,500 to 3,500. These preferably water-soluble polymers, copolymers and/or polymer derivatives are known per se and are commercially available.
  • [0020]
    Preferably, the compositions contain a biocide. All FDA and BGVV compliant biocides are suitable for this application. Any of such biocide capable of inhibiting the growth of either or all of Gram positive or Gram negative bacteria, yeasts or fungi may be employed according to the present invention. Suitable biocides Include thiazol-3-one derivatives, for instance alkyl and/or chlorinated derivatives of thiazol-3-one or mixtures thereof. Typically the biocide is present at levels of from about 15 parts per million (ppm) by weight of the composition to about 1000 ppm, most preferably from about 50 ppm to about 500 ppm by weight of the composition.
  • [0021]
    A further object of the present invention is to provide a process for the shading of paper wherein either of the above compositions or separate dispersions of said constituent pigments are applied to at least one stage of the paper making process.
  • [0022]
    Thus one aspect of the invention relates to a process for shading of paper to b used for food packaging material, which process comprises applying to at least one stage of the paper making process either
  • [0023]
    a) a composition comprising
  • [0024]
    i) a mixture of C.I. Pigment Violet 19 together with C.I. Pigment Blue 15,
  • [0025]
    ii) a dispersant,
  • [0026]
    iii) optionally a biocide, and
  • [0027]
    iv) water.
  • [0028]
    or
  • [0029]
    b) an aqueous dispersion of C.I. Pigment Violet 19 and an aqueous dispersion of C.I. Pigment Blue 15.
  • [0030]
    The aqueous pigment dispersions of C.I. Pigment Violet 19 comprises,
  • [0031]
    a) C.I Pigment Violet 19,
  • [0032]
    b) a dispersant,
  • [0033]
    c) optionally a biocide, and
  • [0034]
    d) water.
  • [0035]
    The aqueous pigment dispersion of C.I. Pigment Blue 15 comprises,
  • [0036]
    a) C.I Pigment Blue 15,
  • [0037]
    b) a dispersant,
  • [0038]
    c) optionally a biocide, and
  • [0039]
    d) water.
  • [0040]
    The preferences given before for the compositions also apply to the process for applying the compositions.
  • [0041]
    In one preferred form of the process of shading paper, a dispersion of C.I. Pigment Violet 19 and a dispersion of C.I. Pigment Blue 15 are applied to at least one stage of the paper making process, wherein the C.I. Pigment 19 is added in an amount of greater than 50% by weight of added pigments. The C.I. Pigment 19 is usually added in an amount of 60% to 95% by weight, preferably 70% to 90% by weight of the added pigments. In a particularly preferred form of the process C.I. Pigment Violet 19 is added in an amount of 75% to 85% by weight and C.I. Pigment Blue 15 is added in an amount of 15% to 25% by weight of C.I. Pigment Blue 15 based on the weight of the added pigments.
  • [0042]
    In another preferred form of the process a dispersion of C.I. Pigment Violet 19 and a dispersion of either C.I. Pigment Blue 15 or C.I. Pigment Blue 60 are added to at least one stage of the paper making process, wherein amount of C.I. Pigment Violet 19 used is less than 50% of the total amount of pigment used. The amount of C.I. Pigment Violet 19 used is usually 30% to less than 50% by weight, preferably 40% to less than 50% by weight, based on the weight of the pigments used.
  • [0043]
    A further aspect of the process of the invention relates to a process for shading of paper to be used for food packaging material, which process comprises applying at least one stage of the paper making process either
  • [0044]
    a) a composition comprising,
  • [0045]
    i) a mixture of C.I. Pigment Red 177 together with C.I. Pigment Blue 15 or C.I. Pigment Blue 60,
  • [0046]
    ii) a dispersant,
  • [0047]
    iii) optionally a biocide, and
  • [0048]
    iv) water,
  • [0049]
    or
  • [0050]
    b) an aqueous dispersion of C.I. Pigment Red 177 and an aqueous dispersion of either C.I. Pigment Blue 15 or C.I. Pigment Blue 60.
  • [0051]
    The aqueous pigment dispersions of C.I. Pigment Red 177 comprises,
  • [0052]
    a) C.I Pigment Red 177,
  • [0053]
    b) a dispersant,
  • [0054]
    c) optionally a biocide, and
  • [0055]
    d) water.
  • [0056]
    The aqueous pigment dispersion of C.I. Pigment Blue 15 or C.I. Pigment Blue 60 comprises,
  • [0057]
    a) C.I Pigment Blue 15 or C.1. Pigment Blue 60,
  • [0058]
    b) a dispersant,
  • [0059]
    c) optionally a biocide, and
  • [0060]
    d) water.
  • [0061]
    In the process of shading paper in which a dispersion of C.I. Pigment Red 177 and a dispersion of either C.I. Pigment Blue 60 or C.I. Pigment Blue 15 is added to at least one stage of the paper making process, C.I. Pigment Red 177 is usually added in an amount below 60% by weight, preferably below 50% by weight, of the added pigments. In a particularly preferred process C.I. Pigment Red 177 is added in an amount of 20 or 25 to 40% by weight, based on the weight of added pigments and C.I. Pigment Blue 15 or C.I. Pigment Blue 60 is added in an amount of 60 to 75% by weight of the added pigments.
  • [0062]
    When separate pigment dispersions are applied to the process it is possible for the aqueous pigment dispersions to be added at different stages of the paper making process, though best results are usually obtained if the pigment dispersions are added to the same stage. As for the combined pigment compositions the separate aqueous pigment dispersions contain preferably 0.1 to 40%, more preferably 10 to 30%, most preferably around 20% of the respective pigment, based on the weight of the dispersion. Generally the amounts of dispersants and biocides used in each of the aqueous pigment dispersions would be substantially the same as the amounts used in the composition given before.
  • [0063]
    According to conventional paper making processes the pulp is processed in a mixing chest where it is mixed in a conventional manner to form a thick stock, which is then diluted to form the thin stock, the thin stock is passed towards a drainage screen through various items of apparatus such as a fan pump and a centri screen, and th thin stock is drained through a screen so as to form a sheet, which is then dried. Such conventional processes are described, for example, in U.S. Pat. No. 5,676,796.
  • [0064]
    For example, the composition can be added to the pulp, the mixing chest, the thick stock or the thin stock.
  • [0065]
    Whether the pigments are added in the form of the composition or in the form of separate pigment dispersions they are as a rule added in an amount of 5 to 1000 g per tonne, preferably in an amount of 10 to 400 g/tonne and most preferably in an amount of 50 or 100 to 400 g/tonne. The gram hereby refers to equivalent total dry weight of pigment added and the tonne hereby refers to the equivalent dry weight of material the composition or pigment dispersions are added to (for example the pulp).
  • [0066]
    In addition, at one of the stages of the paper making process a cationic coagulant or cationic retention aid can be added.
  • [0067]
    Preferably, the cationic coagulant is added prior to dilution, most preferably to the thick stock.
  • [0068]
    The coagulant usually is added in an amount of 10 to 1000 g/tonne, preferably in an amount of 50 to 700 g/tonne and most preferably in an amount of 100 to 500 g/tonne. The tonne hereby refers to the material the composition is added to (for example the thick stock).
  • [0069]
    Typical examples of coagulants are polyamine epichlorohydrin, polyethylene imine, polymers of cationic monomers such as diallyl dimethyl ammonium chloride, dialkyl aminoalkyl (meth)acrylates or quaternary ammonium salts, dialkyl aminoalkyl (meth)acrylamides or quaternary ammonium salts. Preferred are coagulants which have an intrinsinc viscosity (IV) of below 3 dl/g and a cationic charge density of at least 4 meq/g.
  • [0070]
    The cationic retention aid may be the same polymer as the cationic coagulant or more usually is either cationic starch or a copolymer of cationic monomers such as diallyl dimethyl ammonium chloride, dialkyl aminoalkyl (meth)acrylates or quaternary ammonium salts, dialkyl aminoalkyl (meth)acrylamides or quaternary ammonium salts with nonionic monomers such as acrylamide. Typically the cationic retention aids are synthetic polymers which have which have an intrinsic viscosity (IV) of at least 3 dl/g, usually at least 4 or 5 dl/g and can be as high as 10 or 12 dl/g or higher. Typically the cationic retention aids can have a cationic charge density of below 4 meq/g, preferably below 3 meq/g.
  • [0071]
    Another object of the present invention is the use of the inventive composition for shading of paper to be used for food packaging material.
  • [0072]
    The paper may be filled or unfilled paper and may be lightweight or heavyweight. The paper may be, for instance, paper board.
  • [0073]
    The special combination of pigments used according to the present invention allows shading of food packaging materials in a good manner. Especially for paper materials a very good whiteness is obtained.
  • [0074]
    These dispersions are suited for direct food contact packaging, eliminating the need for overwrapping foods. (Color additive petition for paper and board is pending.) The food can be in liquid form as well as in solid form.
  • [0075]
    Furthermore, the dispersions are stable for a longer period of time and can therefore be stored before application, without showing deposits resulting in deterious application properties.
  • [0076]
    The following examples illustrate various embodiments of the invention, but the scope of the invention is not limited thereto. In the examples, percentages are by weight, unless otherwise indicated.
  • EXAMPLE 1
  • [0077]
    By mixing the following dispersion is prepared:
    16 wt % C.I. Pigment Violet 19
    4 wt % C.I. Pigment Blue 15
    5.6 wt % 2-naphthalene sulphonic acid polymer
    with formaldehyde, sodium salt
    0.008 wt % 5-chloro-2-methyl-2H-isothiazol-3-one
    0.003 wt % 2-methyl-2H-isothiazol-3-one.
    74.389 wt % water
  • EXAMPLES 2 to 5
  • [0078]
    To a pulp comprising an elemental chlorine free blend of 70% bleached hardwood and 30% bleached softwood, 10% by weight of a filler (calcium carbonate) and 1.5% of a conventional sizing agent (Keydime C), the pulp having a pH of about 7.2, are added the dispersions given in the following Table 1 (the amounts given in Table 1 are given in % by weight, based on the weight of the pulp):
    TABLE 1
    Amount of the dispersion of Example 1
    Example (based on the weight of the pulp)
    2 100 g/tonne
    3 200 g/tonne
    4 300 g/tonne
    5 500 g/tonne
  • [0079]
    The pulp is processed further according to conventional methods, which means in the mixing chest the pulp is mixed in a conventional manner to form a thick stock, which is then diluted to form the thin stock, the thin stock is passed towards a drainage screen through various items of apparatus such as a fan pump and a centri screen, and draining th thin stock through a screen so as to form a she t, which is then dried. In each case a paper is obtain d which shows very good whiteness.
  • EXAMPLE 6
  • [0080]
    The above Example 4 is repeated, except that just prior to diluting the thick stock 300 g/tonne of a coagulant (Nalco 7607) is added. A paper is obtained which shows very good whiteness.
  • EXAMPLE 7
  • [0081]
    By mixing the dispersions given in the following Table 2 are prepared:
    TABLE 2
    Dispersion Violet Pigment Blue Pigment Dispersant *Biocide Water
    A1 9.8% of 10.2% of 5.6 % of 0.008% of Water made
    0.1. Pigment 0.1. Pigment 2-naphthalene CMITO up to 100%
    Violet 19 Blue 60 sulphonic acid and
    polymer with 0.003% of
    formaldehyde, MITO
    sodium salt
    B1 4.9% of  5.1% of 5.6% of 0.008% of Water made
    C.I. Pigment C.I. Pigment 2-naphthalene CMITO up to 100%
    Violet 19 Blue 15 sulphonic acid and
    polymer with 0.003% of
    formaldehyde, MITO
    sodium salt
  • EXAMPLES 8 to 15
  • [0082]
    To a pulp comprising an elemental chlorin free blend of 70% bleached hardwood and 30% bleached softwood, 10% by weight of a filler (calcium carbonate) and 1.5% of a conventional sizing agent (Keydime C), the pulp having a pH of about 7.2, are added the dispersions given in the following Table 2 (the amounts given in Table 2 are given in % by weight, based on the weight of the pulp):
    TABLE 3
    Amount of the dispersion based
    Example Dispersion on the weight of the pulp
     8 A1 100 g/tonne
     9 A1 200 g/tonne
    10 A1 300 g/tonne
    11 A1 500 g/tonne
    12 B1 100 g/tonne
    13 B1 200 g/tonne
    14 B1 300 g/tonne
    15 B1 500 g/tonne
  • [0083]
    The pulp is processed further according to conventional methods, which means in the mixing chest the pulp is mixed in a conventional manner to form a thick stock, which is then diluted to form the thin stock, the thin stock is passed towards a drainage screen through various items of apparatus such as a fan pump and a centri screen, and draining the thin stock through a screen so as to form a sheet, which is then dried. In each case a paper is obtained which shows very good whiteness.
  • EXAMPLES 16 and 17
  • [0084]
    Each of the above Examples 10 and 14 are repeated, except that just prior to diluting the thick stock 300 g/tonne of a coagulant (Nalco 7607) is added. In each case a paper is obtained which shows very good whiteness.
  • EXAMPLE 18
  • [0085]
    By mixing the following dispersions of C.I Pigment Red 177, C.I. Pigment Blue 15 and Pigment Blue 60 are prepared:
    C.I. Pigment Red 177 Dispersion
     19.9% C.I. Pigment Red 177
      4.0% 2-Naphthalene sulphonic acid, polymer with formaldehyde,
    sodium salt
     0.008% 5-Chloro-2-methyl-2H-isothiazol-3-one
     0.003% 2-Methyl-2H-isothiazol-3-one
    79.089% Water
    C.I. Pigment Blue 60 Dispersion
     19.6% C.I. Pigment Blue 60
     5.74% 2-Naphthalene sulphonic acid, polymer with formaldehyde,
    sodium salt
     0.008% 5-Chloro-2-methyl-2H-isothiazol-3-one
     0.003% 2-Methyl-2H-isothiazol-3-One
    79.649% Water
    C.I. Pigment Blue 15 Dispersion
     18.50% C.I. Pigment Blue 15
     5.60% 2-Naphthalene sulphonic acid, polymer with formaldehyde,
    sodium salt
     0.008% 5-Chloro-2-methyl-2H-isothiazol-3-One
     0.003% 2-Methyl-2H-isothiazol-3-one
    75.889% Water
  • EXAMPLES 19 to 22
  • [0086]
    To a thick stock comprising an elemental chlorine free blend of 70% bleached hardwood and 30% bleached softwood, 10% by weight of a filler (calcium carbonate) and 1.5% of a conventional sizing agent (Keydime C), the pulp having a pH of about 7.2, pigment dispersions are added to the thick stock at doses given in Table 4 based.
    TABLE 4
    C.I. Pigment C.I. Pigment C.I. Pigment
    Example Red177 Dispersion Blue 60 Disperison Blue 15 Disperion
    19  60 g/tonne 200 g/tonne
    20  20 g/tonne  66 g/tonne
    21  6 g/tonne  20 g/tonne
    22 114 g/tonne 86 g/tonne
  • [0087]
    The pulp is processed further according to conventional methods, which means in the mixing chest the pulp is mixed in a conventional manner to form a thick stock, which is then diluted to form the thin stock, the thin stock is passed towards a drainage screen through various items of apparatus such as a fan pump and a centri screen, and draining the thin stock through a screen so as to form a sheet, which is then dried. In each case a paper is obtained which shows very good whiteness.
  • EXAMPLES 23 and 24
  • [0088]
    Each of the above Examples 19 and 22 is repeated, except that just prior to diluting the thick stock 300 g/tonne of a coagulant (Nalco 7607) is added. In each case a paper is obtained which shows very good whiteness.

Claims (25)

  1. 1. A composition comprising
    a) a mixture of C.I. Pigment Violet 19 together with either C.I. Pigment Blue 15 or C.I. Pigment blue 60,
    b) a dispersant,
    c) optionally a biocide, and
    d) water.
  2. 2. A composition according to claim 1 wherein component a) comprises a mixture of C.I. Pigment Violet 19 together with C.I. Pigment Blue 15, in which mixture the amount by weight of C.I. Pigment Violet 19 is greater than 50%, based on the weight of the mixture of pigments.
  3. 3. A composition according to claim 1 or claim 2, wherein the mixture of pigments contains 60% to 95% by weight of C.I. Pigment Violet 19.
  4. 4. A composition according to any one of claims 1 to 3, wherein the mixture of pigments contains 70% to 90% by weight of C.I. Pigment Violet 19.
  5. 5. A composition according to any one of claims 1 to 4, wherein the mixture of pigments contains 75% to 85% by weight of C.I. Pigment Violet 19 and 15% to 25% by weight of C.I. Pigment Blue 15.
  6. 6. A composition according to claim 1 wherein component a) comprises a mixture of C.I. Pigment Violet 19 together with C.I. Pigment Blue 15 or C.I. Pigment Blue 60, in which mixture the amount by weight of C.I. Pigment Violet 19 is less than 50%, based on the weight of the mixture of pigments,
  7. 7. A composition according to claim 6, wherein the mixture of pigments contains C.I. Pigment Violet 19 together with C.I. Pigment Blue 60.
  8. 8. A composition according to claim 6 or claim 7, wherein the mixture of pigments contains 30% to less than 50% by weight of C.I. Pigment Violet 19.
  9. 9. A composition according to any one of claim 6 to claim 8, wherein the mixture of pigments contains 40% to less than 50% by weight of C.I. Pigment Violet 19.
  10. 10. A composition comprising
    a) a mixture of C.I. Pigment Red 177 together with C.I. Pigment Blue 15 or C.I. Pigment Blue 60,
    b) a dispersant,
    c) optionally a biocide, and
    d) water.
  11. 11. A composition according to claim 10, wherein the mixture of pigments contains C.I. Pigment Red 177 together with C.I. Pigment Blue 60.
  12. 12. A composition according to claim 10 or claim 11, wherein the mixture of pigments contains below 60% by weight of C.I. Pigment Red 177.
  13. 13. A composition according to any one of claims 10 to 12, wherein the mixture of pigments contains below 50% by weight of C.I. Pigment Red 177.
  14. 14. A composition according to any one of claims 5 to 8, wherein the mixture of pigments contains 20 to 40% by weight of C.I. Pigment Red 177 and 60 to 75% by weight of C.I. Pigment Blue 60.
  15. 15. A composition according to any one of claims 1 to 14, which contains 0.1 to 40%, more preferably 10 to 30%, most preferably around 20% pigment, based on the weight of the dispersion.
  16. 16. A composition according to any one of claims 1 to 15, which contains 0.1 to 30%, preferably 0.1 to 8% of dispersant, by weight of the composition.
  17. 17. A composition according to any one of claims 1 to 16, which contains a biocide.
  18. 18. A composition according to any one of claims 1 to 17, wherein the dispersant is polyacrylic acid, polymethacrylic acid, polymaleic anhydride, polyurethane, polyvinylether, polyvinylalcohol, polyalkylene glycol, polyethylene oxide, cellulose derivatives, polyimine, polyvinylpyridine, or copolymers thereof, or copolymers of acrylic acid with styrene, acrylonitrile, vinylacetate, vinylphosphonate, vinylpropionate, vinylchloride, itaconic acid or maleic anhydride, or ethoxylated or propoxylated fatty, ethoxylated or propoxylated fatty quaternary salts, ethoxylated fatty amides, alkyl-, cycloalkyl- or alkylaryl-oxypoly(ethylenoxy)ethanol, cycloalkyloxypoly(ethylenoxy)laurate or oleate, polyethylene glycol 400 laurate or oleate, alkyl-, cycloalkyl- or alkylaryl-poly(ethylenoxy)carboxylate or phosphonate or aromatic sulphonic acid polymer with formaldehyde or salts thereof.
  19. 19. A process for shading of paper to be used for food packaging material, which process comprises applying to at least one stage of the paper making process either
    a) a composition according to claim 1,
    b) a composition according to claim 10,
    c) an aqueous dispersion of C.I. Pigment Violet 19 and an aqueous dispersion of C.I. Pigment Blue 15, wherein amount of C.I. Pigment Violet 19, or
    d) an aqueous dispersion of C.I. Pigment Red 177 and an aqueous dispersion of either C.I. Pigment Blue 15 or C.I. Pigment Blue 60.
  20. 20. A process according to claim 19, wherein the composition is added to the mixing chest, the thin stock, the thick stock or preferably to the pulp.
  21. 21. A process according to claim 19 or claim 20, wherein the composition is added in an amount of 5 to 1000 g per tonne, preferably in an amount of 10 to 400 g/tonne and most preferably in an amount of 50 to 400 g/tonne.
  22. 22. A process according to any one of claims 19 to 21, wherein in addition a cationic coagulant or retention aid is added.
  23. 23. A process according to claim 22, wherein the cationic coagulant is added to the thick stock, preferably prior to dilution.
  24. 24. A process according to claim 23, wherein the cationic coagulant is added in an amount of 10 to 1000 g per tonne, preferably in an amount of 50 to 700 g/tonne and most preferably in an amount of 100 to 500 g/tonne.
  25. 25. Use of a composition according to claim 1 or claim 10 for shading of paper to be used for food packaging material.
US10621801 1999-04-08 2003-07-17 Pigment compositions and process of shading Abandoned US20040040682A1 (en)

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GB9907878A GB9907878D0 (en) 1999-04-08 1999-04-08 Process of shading
GB9907878.4 1999-04-08
US09937978 US6620235B1 (en) 1999-04-08 2000-04-03 Pigment compositions and process of shading
US10621801 US20040040682A1 (en) 1999-04-08 2003-07-17 Pigment compositions and process of shading

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JP (1) JP2002542330A (en)
KR (1) KR100695318B1 (en)
CN (2) CN1298788C (en)
CA (1) CA2368139C (en)
DE (2) DE60001639T2 (en)
ES (1) ES2192173T3 (en)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2161204A1 (en) * 2008-08-26 2010-03-10 Robert Kick Folding cardboard box
CN104497631A (en) * 2014-12-31 2015-04-08 浙江闰土股份有限公司 Blue liquid disperse dye and preparation method and application thereof

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1130065B1 (en) * 2000-02-04 2006-03-08 DAINICHISEIKA COLOR & CHEMICALS MFG. CO. LTD. Pigment compositions, production process thereof; colorants; and colored articles
DE10253804A1 (en) 2002-11-18 2004-05-27 Basf Ag Solid pigment preparation for use with high mol. wt. (in)organic materials contains a polymeric water-soluble anionic surfactant and optionally also a polyether- based nonionic surfactant
GB0409570D0 (en) 2004-04-29 2004-06-02 Ciba Spec Chem Water Treat Ltd Particulate compositions and their manufacture
KR100692487B1 (en) * 2005-02-24 2007-03-09 삼성테크윈 주식회사 Tray feeder having dehumidification function
ES2603218T3 (en) * 2006-11-17 2017-02-24 Ciba Holding Inc. Microcapsules, their use and processes for their manufacture
JP2007154212A (en) * 2007-02-16 2007-06-21 Fujifilm Corp Organic pigment dispersion and method for producing the same

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844485A (en) * 1955-07-22 1958-07-22 Du Pont Organic pigments
US3074950A (en) * 1959-08-22 1963-01-22 Basf Ag Process for producing a modification of gamma 7,14-dioxo-5,7,12,14-tetrahydroquinolino-(2,3-b) acridine
US5131981A (en) * 1987-09-30 1992-07-21 Basf Aktiengesellschaft Coloring paper
US5472494A (en) * 1993-07-28 1995-12-05 Basf Aktiengesellschaft Pigment preparation with perylene derivatives as dispersants
US5476544A (en) * 1993-02-26 1995-12-19 Toyo Ink Manufacturing Co., Ltd. Water-based pigment dispersion
US5518539A (en) * 1993-11-22 1996-05-21 Ciba-Geigy Corporation Process for the preparation of synergistic pigment mixtures
US5922122A (en) * 1996-07-31 1999-07-13 Fuji Photo Film Co., Ltd. Pigment-dispersed composition
US6033444A (en) * 1997-10-09 2000-03-07 Stora Kopparbergs Bergslags Ab Shading of paper
US6063182A (en) * 1997-09-08 2000-05-16 Ciba Speciality Chemicals Corporation Stir-in pigment compositions
US6194480B1 (en) * 1997-04-10 2001-02-27 Fuji Photo Film Co., Ltd. Pigment composition and colored photosensitive composition
US6468341B2 (en) * 2000-02-04 2002-10-22 Dainichiseika Color & Chemicals Pigment compositions, production process thereof, colorants, and colored articles

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR941218A (en) * 1946-01-25 1949-01-05 American Cyanamid Co compounds and method for their obtaining pigments
DK131789C (en) 1970-03-20 1976-03-22 Koege Kemisk Vaerk Process for the preparation of copper phthalocyanine pigments
JPH0134268B2 (en) 1980-02-25 1989-07-18 Toyo Ink Mfg Co
JPH042175B2 (en) * 1984-09-20 1992-01-16
DE4321693A1 (en) * 1993-06-30 1995-01-12 Basf Ag Pigment preparations with anthraquinone derivatives as dispersants
JP3389808B2 (en) * 1997-03-03 2003-03-24 東洋インキ製造株式会社 Pigment compositions and methods of manufacturing

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844485A (en) * 1955-07-22 1958-07-22 Du Pont Organic pigments
US3074950A (en) * 1959-08-22 1963-01-22 Basf Ag Process for producing a modification of gamma 7,14-dioxo-5,7,12,14-tetrahydroquinolino-(2,3-b) acridine
US5131981A (en) * 1987-09-30 1992-07-21 Basf Aktiengesellschaft Coloring paper
US5476544A (en) * 1993-02-26 1995-12-19 Toyo Ink Manufacturing Co., Ltd. Water-based pigment dispersion
US5472494A (en) * 1993-07-28 1995-12-05 Basf Aktiengesellschaft Pigment preparation with perylene derivatives as dispersants
US5518539A (en) * 1993-11-22 1996-05-21 Ciba-Geigy Corporation Process for the preparation of synergistic pigment mixtures
US5922122A (en) * 1996-07-31 1999-07-13 Fuji Photo Film Co., Ltd. Pigment-dispersed composition
US6194480B1 (en) * 1997-04-10 2001-02-27 Fuji Photo Film Co., Ltd. Pigment composition and colored photosensitive composition
US6063182A (en) * 1997-09-08 2000-05-16 Ciba Speciality Chemicals Corporation Stir-in pigment compositions
US6033444A (en) * 1997-10-09 2000-03-07 Stora Kopparbergs Bergslags Ab Shading of paper
US6468341B2 (en) * 2000-02-04 2002-10-22 Dainichiseika Color & Chemicals Pigment compositions, production process thereof, colorants, and colored articles

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2161204A1 (en) * 2008-08-26 2010-03-10 Robert Kick Folding cardboard box
CN104497631A (en) * 2014-12-31 2015-04-08 浙江闰土股份有限公司 Blue liquid disperse dye and preparation method and application thereof

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Publication number Publication date Type
CA2368139C (en) 2008-08-19 grant
US6620235B1 (en) 2003-09-16 grant
KR20020022644A (en) 2002-03-27 application
CA2368139A1 (en) 2000-10-19 application
CN1298788C (en) 2007-02-07 grant
WO2000061689A1 (en) 2000-10-19 application
JP2002542330U (en) application
ES2192173T3 (en) 2003-10-01 grant
JP2002542330A (en) 2002-12-10 application
CN1192064C (en) 2005-03-09 grant
DE60001639D1 (en) 2003-04-17 grant
CN1594443A (en) 2005-03-16 application
KR100695318B1 (en) 2007-03-19 grant
EP1165696B1 (en) 2003-03-12 grant
EP1165696A1 (en) 2002-01-02 application
GB9907878D0 (en) 1999-06-02 grant
CN1345357A (en) 2002-04-17 application
DE60001639T2 (en) 2004-02-05 grant

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