WO2011039987A1 - フェノール性化合物を用いた記録材料 - Google Patents
フェノール性化合物を用いた記録材料 Download PDFInfo
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- WO2011039987A1 WO2011039987A1 PCT/JP2010/005788 JP2010005788W WO2011039987A1 WO 2011039987 A1 WO2011039987 A1 WO 2011039987A1 JP 2010005788 W JP2010005788 W JP 2010005788W WO 2011039987 A1 WO2011039987 A1 WO 2011039987A1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
- B41M5/333—Colour developing components therefor, e.g. acidic compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
- B41M5/333—Colour developing components therefor, e.g. acidic compounds
- B41M5/3333—Non-macromolecular compounds
- B41M5/3335—Compounds containing phenolic or carboxylic acid groups or metal salts thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
- B41M2205/04—Direct thermal recording [DTR]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
- B41M5/323—Organic colour formers, e.g. leuco dyes
Definitions
- the present invention relates to a recording material containing a color-forming dye and a developer, and more particularly to a recording material containing a phenolic compound as a developer.
- the present application is Japanese Patent Application No. 2009-224317 filed on September 29, 2009, Japanese Patent Application No. 2009-2224094 filed on September 29, 2009, October 16, 2009 The priority is claimed to the Japanese patent application No. 2009-239571 filed, the contents of which are incorporated herein.
- Recording materials that utilize the color developed by the reaction between the color-forming dye and the developer can be recorded in a relatively simple device in a short time without complicated processing such as development and fixing. It is widely used for heat-sensitive recording paper for printing or pressure-sensitive copying paper for forms for copying several sheets simultaneously. These recording materials are required to develop colors quickly, maintain the whiteness of the uncolored areas (hereinafter referred to as “background”), and have high color fastness, but have long-term storage stability. In view of the above, there is a demand for a recording material that is particularly excellent in light resistance of the background. For this reason, efforts have been made to develop chromogenic dyes, color developers, storage stabilizers, etc., but a satisfactory balance has been found, such as color development sensitivity, background and image storability. Not.
- the present inventors have already proposed a recording material excellent in light resistance of the background using a cinnamic amide-based compound as a developer (see Patent Document 1), but is still sufficiently satisfactory in terms of image heat resistance and the like. However, no practical recording material has been obtained.
- the object of the present invention is to improve the disadvantages of the conventional recording materials as described above, have excellent background and image storage stability, particularly excellent background light resistance, excellent color development sensitivity, image heat resistance and plastic resistance.
- An object of the present invention is to provide a recording material and a recording sheet which are extremely excellent in agent properties and oil resistance.
- the present inventors have combined color cinnamamide compounds and additives to provide excellent color development sensitivity, background light resistance, and preservation of the background and images.
- the present invention has been completed by finding that a recording material having excellent properties and image storage stability can be obtained.
- the present invention relates to (1) a recording material containing a chromogenic dye, wherein the formula (I)
- R 1 and R 4 each independently represents a hydroxyl group, a halogen atom, a C 1 -C 6 alkyl group, or a C 1 -C 6 alkoxy group
- p is either 0 or 1 to 4
- Q represents an integer of 0 or any one of 1 to 5, and when p and q are 2 or more, R 1 and R 4 may be the same or different
- 2 and R 3 each independently represents a hydrogen atom or a C 1 to C 6 alkyl group
- R 5 represents a hydrogen atom, a C 1 to C 6 alkyl group, an optionally substituted phenyl group, or a substituted group.
- the bond indicated by the wavy line represents E, Z, or a mixture thereof.
- a recording material comprising at least one compound represented by the formula: (2)
- the compound represented by the formula (I) is represented by the formula (II)
- R 2 ⁇ R 5 are the same as R 2 ⁇ R 5 of the formula (I)
- R 7 is representative of C 1 ⁇ C 4 alkyl group, or C 1 ⁇ C 4 alkoxy group.
- the compound represented by the formula (I) is represented by the formula (III)
- R 2 ⁇ R 5 are the same as R 2 ⁇ R 5 of the formula (I).
- R 81 and R 82 each independently represents a halogen atom, a C 1 -C 6 alkyl group or a C 2 -C 6 alkenyl group, and n 1 and n 2 each independently represent 0 or 1 to 4 Wherein m represents 0 or any integer of 1 to 2, and R 9 represents a C 1 to C 6 alkyl group. Or at least one compound represented by formula (V)
- R 101 ⁇ R 106 each independently represents a halogen atom, C 1 ⁇ C 6 alkyl group or a C 2 ⁇ C 6 alkenyl group, Y, C 1 ⁇ having a straight or branched C 12 saturated or unsaturated hydrocarbon group which may have an ether bond, or
- R 11 represents a methylene group or an ethylene group
- T represents a hydrogen atom or a C 1 -C 4 alkyl group
- b, c, d, e, f, and g are each independently 0.
- m represents 0 or any integer from 1 to 2
- a represents 0 or any integer from 1 to 10.
- the compound represented by the formula (IV) is represented by the formula (VI)
- R 12 represents a hydrogen atom, a C 1 -C 6 alkyl group, or a C 2 -C 6 alkenyl group.
- the recording material as described in (4) above, wherein (6) The compound represented by the formula (V) is represented by the formula (VII)
- Y represents a hydrocarbon group which may have a C 1 to C 12 saturated or unsaturated linear or branched chain and may have an ether bond, or
- R 11 represents a methylene group or an ethylene group
- T represents a hydrogen atom or a C 1 -C 4 alkyl group
- a represents an integer of 0 or 1-10.
- R 13 and R 14 each independently represent a C 1 -C 6 alkyl group
- p ′ and q ′ each independently represent an integer of 1 to 4
- p ′ and q ′ represent When two or more, R 13 and R 14 may be the same or different from each other. However, at least one of R 13 and R 14 is a C 1 -C 6 alkyl group bonded to the ortho position of the hydroxyl group with a secondary or tertiary carbon.
- R 15 represents a hydrogen atom or an optionally substituted C 1 -C 6 alkyl group.
- the recording material according to (8), wherein the recording material is a hindered phenol compound represented by (10) R 15 of the hindered phenol compound represented by the formula (VIII) is represented by the formula (IX)
- R 16 represents a C 1 to C 6 alkyl group, and r represents an integer of 0 or 1 to 4. * Represents a bonding position.
- the recording material according to (9), wherein the recording material is a compound represented by (11) The recording material according to any one of (1) to (3), wherein the additive is a sensitizer, (12) The recording material according to any one of (1) to (11) above, wherein the color-forming dye is a fluoran dye, and (13) the above (1) to (12) on a support
- a recording material having excellent color development sensitivity and excellent background and image storage stability is obtained.
- Obtainable it is possible to obtain a recording material or a recording sheet that is excellent in light resistance and moist heat resistance of the background and extremely excellent in image heat resistance.
- FIG. 10 is a diagram showing the results of a dynamic color development sensitivity test using each recording paper prepared in Examples 11 to 15 and Comparative Example 7.
- FIG. 11 is a diagram showing the results of a dynamic color development sensitivity test using each recording paper prepared in Examples 16 to 20 and Comparative Example 8. It is a figure which shows the result of the dynamic coloring sensitivity test using each recording paper created in Examples 21 and 22 and Comparative Example 9.
- FIG. 10 is a diagram showing the results of a dynamic color development sensitivity test using each recording paper prepared in Examples 25 to 27 and Comparative Example 12.
- FIG. 10 is a diagram showing the results of a dynamic color development sensitivity test using each recording paper prepared in Examples 28 to 30 and Comparative Example 13.
- the recording material of the present invention is a recording material containing a color-forming dye, and is characterized by containing at least one compound represented by formula (I) and an additive.
- R 1 and R 4 each independently represents a hydroxyl group, a halogen atom, a C 1 -C 6 alkyl group or a C 1 -C 6 alkoxy group.
- the halogen atom include a fluorine atom, a chlorine atom, a bromine atom, and an iodine atom.
- the C 1 -C 6 alkyl group include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, and an n-butyl group.
- C 1 -C 6 alkoxy group examples include a methoxy group, an ethoxy group, an n-propoxy group, an isopropoxy group, an n-butoxy group, a sec-butoxy group, a t-butoxy group, an isobutoxy group, and an n-pentoxy group.
- isopentoxy group, neopentoxy group, t-pentoxy group, n-hexoxy group, isohexoxy group, 1-methylpentoxy group Group can be exemplified 2-methyl pentoxy group.
- R 2 and R 3 may each independently represent a hydrogen atom or a C 1 ⁇ C 6 alkyl group, in particular as a C 1 ⁇ C 6 alkyl group exemplified are the same as specific examples of R 1 it can.
- R 5 represents a hydrogen atom, a C 1 -C 6 alkyl group, an optionally substituted phenyl group, or an optionally substituted benzyl group.
- Specific examples of the C 1 -C 6 alkyl group include those similar to the specific examples of R 1 .
- substituent of the phenyl group which may be substituted or the benzyl group which may be substituted include a hydroxyl group; a halogen atom such as a fluorine atom, a chlorine atom, a bromine atom and an iodine atom; a methyl group, an ethyl group, n- Propyl group, isopropyl group, n-butyl group, sec-butyl group, t-butyl group, n-pentyl group, isopentyl group, neopentyl group, t-pentyl group, n-hexyl group, isohexyl group, 1-methylpentyl group A C 1 -C 6 alkyl group such as 2-methylpentyl group; methoxy group, ethoxy group, n-propoxy group, isopropoxy group, n-butoxy group, sec-butoxy group, t-butoxy group, isobut
- R 1 represents a hydroxyl group, a halogen atom, a C 1 -C 6 alkyl group, or a C 1 -C 6 alkoxy group
- p represents an integer of 0 or 1 to 4, and p is 2 or more.
- R 1 may be the same or different
- R 5 is a hydrogen atom, a C 1 -C 6 alkyl group, an optionally substituted phenyl group, or an optionally substituted benzyl. Represents a group.
- R 4 represents a hydroxyl group, a halogen atom, a C 1 to C 6 alkyl group, or a C 1 to C 6 alkoxy group
- q represents an integer of 0 or 1 to 5, and q is 2 or more.
- R 4 may be the same or different from each other
- R 2 and R 3 each independently represent a hydrogen atom or a C 1 -C 6 alkyl group
- Z represents a chlorine atom
- bromine representss a halogen atom such as an atom or iodine atom.
- the bond indicated by the wavy line is obtained by reacting the compound represented by E or Z, or a mixture thereof in an organic solvent such as acetonitrile in the presence of a base such as pyridine. be able to.
- the compound represented by the formula (I) has a geometric isomer as shown below, and only one isomer can be obtained depending on the reaction conditions and the purification method, or the isomer It may be obtained as a mixture. All of these isomers are included in the scope of the present invention.
- R 2 ⁇ R 5 are the same as R 2 ⁇ R 5 of the formula (I),
- R 7 is representative of C 1 ⁇ C 4 alkyl group, or C 1 ⁇ C 4 alkoxy group.
- the compound represented by these is especially preferable.
- C 1 ⁇ C 4 alkyl or C 1 ⁇ C 4 alkoxy group R 7 is, specifically, among those exemplified as specific examples of R 1, the conditions of C 1 ⁇ C 4 What satisfies the condition can be exemplified.
- Specific examples of the —C 4 alkoxy group include those exemplified as specific examples of R 1 that satisfy the conditions of C 1 to C 4 .
- examples of the compound represented by the formula (II) include N- (4-hydroxyphenyl) -3-methylcinnamoylamide, N- (3-hydroxyphenyl) -3-methylcinnamoylamide, N- (4-hydroxyphenyl) -2,3-dimethoxycinnamoylamide and the like can be exemplified.
- R 2 ⁇ R 5 are the same as R 2 ⁇ R 5 of the formula (I).
- the compound represented by this is also especially preferable. More specific examples of the compound represented by the formula (III) include N- (2-hydroxyphenyl) -cinnamoylamide.
- the additive refers to performance such as improving color development performance and image stability performance relative to a recording material containing a specific cinnamamide compound in a recording material containing a color forming dye. It is a compound added for the purpose of improvement.
- One or more additives can be contained as required.
- the amount of the additive used is usually in the range of 0.1 to 15 parts by weight, preferably 0.5 to 10 parts by weight with respect to 1 part by weight of the color forming dye.
- the additive of this invention is illustrated below, it is not limited to these compounds.
- R 81 and R 82 each independently represent a hydroxyl group, a halogen atom, a C 1 -C 6 alkyl group or a C 2 -C 6 alkenyl group.
- the halogen atom and the C 1 -C 6 alkyl group can be exemplified by the same examples as R 1
- the C 2 -C 6 alkenyl group includes a vinyl group, allyl group, isopropenyl.
- R 9 represents a hydrogen atom, a C 1 -C 6 alkyl group, or a C 2 -C 6 alkenyl group. Examples of the C 1 -C 6 alkyl group are the same as the specific examples of R 1 , and examples of the C 2 -C 6 alkenyl group are the same as the specific examples of R 81 .
- a diphenylsulfone compound represented by the formula (VI) is preferred as the compound represented by the formula (IV).
- Specific examples of the compound represented by the formula (IV) include 4,4′-dihydroxydiphenylsulfone, 2,4′-dihydroxydiphenylsulfone, 4,4′-dihydroxy-3,3′-diallyldiphenylsulfone, 4 -Hydroxy-4'-methoxydiphenylsulfone, 4-hydroxy-4'-ethoxydiphenylsulfone, 4-hydroxy-4'-n-propoxydiphenylsulfone, 4-hydroxy-4'-isopropoxydiphenylsulfone, 4-hydroxy- Examples include 4'-n-butoxydiphenyl sulfone, 4-hydroxy-4'-sec-butoxydiphenyl sulfone, 4-hydroxy-4'-t-butoxydiphenyl sulfone, 4-hydroxy-4'-allyloxydiphenyl sulfone, and the like. be able to.
- These compounds of formula (IV) can be used as a developer, if necessary, in combination of one or more.
- the ratio in the case of combining two or more kinds is arbitrary.
- R 101 to R 106 each independently represents a halogen atom, a C 1 to C 6 alkyl group or a C 2 to C 6 alkenyl group
- Y represents a linear or branched C 1 to C 12 saturated or unsaturated hydrocarbon group which may have an ether bond, or
- R 11 represents a methylene group or an ethylene group
- T represents a hydrogen atom or a C 1 -C 4 alkyl group
- the halogen atom and C 1 -C 6 alkyl group can be the same as the specific examples of R 1
- the C 2 -C 6 alkenyl group is the same as the specific example of R 81.
- Examples of the C 1 to C 4 alkyl group of T include those satisfying the conditions of C 1 to C 4 among those exemplified as specific examples of R 1 .
- Y is a methylene group, ethylene group, trimethylene group, tetramethylene group, pentamethylene group, hexamethylene group, heptamethylene group, octamethylene group, nonamethylene group, decamethylene group, undecamethylene group, dodecamethylene group, methylmethylene group Dimethylmethylene group, methylethylene group, methyleneethylene group, ethylethylene group, 1,2-dimethylethylene group, 1-methyltrimethylene group, 1-methyltetramethylene group, 1,3-dimethyltrimethylene group, 1- Ethyl-4-methyl-tetramethylene group, vinylene group, propenylene group, 2-butenylene group, ethynylene group, 2-butynylene group, 1-vinylethylene group, ethyleneoxyethylene group, tetramethyleneoxytetramethylene group, ethyleneoxyethylene Oxyethylene group, ethylene Oxymethyleneoxyethylene group, 1,3-dioxane-5,5-bismethylene group
- a diphenylsulfone cross-linked compound represented by the formula (VII) is preferable.
- Specific examples of the compound represented by the formula (V) include 4,4′-bis [4- [4- (4-hydroxyphenylsulfonyl) phenoxy] -2-trans-butenyloxy] diphenylsulfone, 4,4 ′ -Bis [4- (4-hydroxyphenylsulfonyl) phenoxy-4-butyloxy] diphenylsulfone, 4,4′-bis [4- (4-hydroxyphenylsulfonyl) phenoxy-3-propyloxy] diphenylsulfone, 4,4 '-Bis [4- (4-hydroxyphenylsulfonyl) phenoxy-2-ethyloxy] diphenylsulfone, 4- [4- (4-hydroxyphenylsulfonyl) phenoxy-4-butyloxy] -4'-[4- (4- Hydroxyphenylsulfonyl) phenoxy-3-propyloxy] diphenylsulfone 4-
- the compound represented by the formula (V) can be used as a developer, if necessary, in combination of one or more.
- the ratio in the case of combining two or more kinds is arbitrary.
- the combination of the compounds (a from which a differs) obtained by the same raw material from which the polymerization degree differs is preferable.
- each compound may be used as a mixture, but a mixture containing several compounds having different degrees of polymerization produced by the reaction can be used as it is as a developer.
- a product mixture obtained by reaction of 4,4'-dihydroxydiphenyl sulfone and bis (2-chloroethyl) ether can be preferably exemplified.
- the solid content is 5 to 80% by mass, preferably 10 to 60% by mass, and particularly preferably 20 to 50% by mass.
- Epoxy group-containing diphenyl sulfones such as 4-benzyloxy-4 ′-(2-methylglycidyloxy) -diphenylsulfone and 4,4′-diglycidyloxydiphenylsulfone; 1,4-diglycidyloxybenzene, 4- [ ⁇ - (hydroxymethyl) benzyloxy] -4′-hydroxydiphenylsulfone, 2-propanol derivatives, salicylic acid derivatives, metal salts of oxynaphthoic acid derivatives (particularly zinc salts), 2,2-methylenebis (4,6-t- Butylphenyl) phosphate metal salt, other water-insoluble zinc compounds, 2,2-bis (4′-hydroxy-3 ′, 5′-dibromophenyl) propane, 4,4′-sulfonylbis (2,6- Dibromophenol), 4,4'-butylidene (6-
- the image stabilizer is preferably a solid at room temperature, and particularly preferably a compound having a melting point of 60 ° C. or higher and hardly soluble in water.
- the image stabilizer is preferably a hindered phenol compound.
- the hindered phenol compound has not only a phenol structure having a bulky substituent such as a t-butyl group at both ortho positions of the hydroxyl group, but also a C 1 bonded to the ortho position of the hydroxyl group by a secondary or tertiary carbon. It is sufficient that at least one kind of —C 6 alkyl group is substituted, and the alkyl group may be cyclized like a cyclohexyl group. Any number of sites having a hindered phenol structure may exist in one molecule.
- the hindered phenol compound is a compound represented by the formula (VIII).
- R 13 and R 14 each independently represent a C 1 -C 6 alkyl group
- p ′ and q ′ each independently represent any integer of 1 to 4
- p ′, q When 'is 2 or more, R 13 and R 14 may be the same or different from each other.
- at least one of R 13 and R 14 is a C 1 -C 6 alkyl group bonded to the ortho position of the hydroxyl group with a secondary or tertiary carbon.
- R 15 represents a hydrogen atom or an optionally substituted C 1 -C 6 alkyl group.
- the C 1 -C 6 alkyl group which may be substituted is the same as the specific example of R 1 , such as a hydroxyl group, a halogen atom, a phenyl group, an optionally substituted phenyl group, a C 1 -C 6 alkoxy group.
- R 15 is preferably of the formula (IX)
- R 16 each independently represents a C 1 -C 6 alkyl group, and r represents an integer of 0 or 1 to 4. * Represents a bonding position].
- Specific examples of the C 1 -C 6 alkyl group as R 16 in formula (IX) are the same as the specific examples of R 1 .
- Specific examples of the compound represented by the formula (VIII) include 1,1,3-tris (2-methyl-4-hydroxy-5-cyclohexylphenyl) butane, 1,1,3-tris (2-methyl- 4-hydroxy-5-t-butylphenyl) butane, 4,4'-butylidene-bis (6-t-butyl-m-cresol), 2,2'-methylene-bis (4-methyl-6-t- Butylphenol), 2,2′-methylene-bis (4-ethyl-6-t-butylphenol) and the like.
- image stabilizers can be used alone or in combination of two or more as required.
- the ratio in the case of combining two or more types is arbitrary.
- sensitizer Specific examples of the sensitizer used in the present invention include the following. Higher fatty acid amides such as stearic acid amide, stearic acid anilide, or palmitic acid amide; Amides such as benzamide, acetoacetanilide, thioacetanilide acrylic acid amide, ethylenebisamide, orthotoluenesulfonamide, paratoluenesulfonamide and the like; Phthalic acid diesters such as dimethyl phthalate, dibenzyl isophthalate, dimethyl isophthalate, dimethyl terephthalate, diethyl isophthalate, diphenyl isophthalate, dibenzyl terephthalate; Dibenzyl oxalate, di (4-methylbenzyl) oxalate, di (4-chlorobenzyl) oxalate, a mixture of benzyl oxalate and di (4-chlorobenzyl) oxalate;
- Terphenyls such as m-terphenyl and p-terphenyl; Carbonic acid derivatives such as diphenyl carbonate, guaiacol carbonate, di-p-tolyl carbonate, phenyl- ⁇ -naphthyl carbonate;
- More preferable examples include di (4-methylbenzyl) oxalate, 1,2-bis (3-methylphenoxy) ethane, 1,2-bis (phenoxymethyl) benzene, diphenylsulfone or 2-naphthylbenzyl ether. it can.
- sensitizers can be used alone or in combination of two or more as required.
- the ratio in the case of combining two or more types is arbitrary.
- color developers there are known color developers, sensitizers, image stabilizers, fillers in addition to the compounds represented by color developing dyes, formulas (I), (IV) and (V).
- a dispersant, an antioxidant, a desensitizer, an anti-tacking agent, an antifoaming agent, a light stabilizer, a fluorescent brightening agent, and the like can be contained, if necessary.
- the amount of each used is usually in the range of 0.1 to 15 parts by weight, preferably 0.5 to 10 parts by weight with respect to 1 part by weight of the chromogenic dye.
- these chemicals may be contained in the coloring layer, but in the case of a multilayer structure, for example, they may be contained in an arbitrary layer such as a protective layer.
- these layers can contain an antioxidant, a light stabilizer and the like.
- an antioxidant and a light stabilizer can be contained in these layers in the form of microcapsules if necessary.
- Examples of the color-forming dye used in the recording material of the present invention include leuco dyes such as fluorane, phthalide, lactam, triphenylmethane, phenothiazine, and spiropyran, but are not limited thereto. Any color developing dye that develops color by contact with a developer that is an acidic substance can be used. In addition, these color-forming dyes are used alone to produce a recording material having the color to be developed, but two or more of them can be used in combination. For example, it is possible to produce a recording material that develops true black color by mixing red, blue, and green primary color developing dyes or black coloring dyes.
- black coloring dyes include 3-diethylamino-6-methyl-7-anilinofluorane, 3-di (n-butyl) amino-6-methyl-7-anilinofluorane, 3- ( N-methyl-N-cyclohexylamino) -6-methyl-7-anilinofluorane, 3- (N-methyl-N-propylamino) -6-methyl-7-anilinofluorane, 3- (N- Ethyl-N-isoamylamino) -6-methyl-7-anilinofluorane, 3- (N-ethyl-p-toluidino) -6-methyl-7-anilinofluorane, 3-diethylamino-7- (m -Trifluoromethylanilino) fluorane, 3-di (n-pentyl) amino-6-methyl-7-anilinofluorane, 3- (N-ethyl-N-ethoxypropylamino) -6-
- blue coloring dyes examples include 3,3-bis (p-dimethylaminophenyl) -6-dimethylaminophthalide and 3- (4-diethylamino-2-ethoxyphenyl) -3- (1-ethyl). -2-methyl-3-indolyl) -4-azaphthalide, 3- (4-diethylamino-2-ethoxyphenyl) -3- (1-octyl-2-methyl-3-indolyl) -4-azaphthalide, and the like. .
- green chromogenic dyes include 3-diethylamino-7-dibenzylaminofluorane, 3- (N-ethyl-NP-tolyl) amino-7-N-methylanilinofluorane, 3, Examples thereof include 3-bis (4-diethylamino-2-ethoxyphenyl) -4-azaphthalide, 3,6,6′-tris (dimethylamino) spiro [fluorene-9,3′-phthalide] and the like.
- red, orange and yellow chromogenic dyes examples include 3-diethylamino-7-chlorofluorane, 3-diethylamino-benzo [a] fluorane, 3-diethylamino-6-methyl-7-chlorofluorane, 3 -Cyclohexylamino-6-chlorofluorane, 3-diethylamino-6,8-dimethylfluorane, 4,4'-isopropylidenedi (4-phenoxy) bis [4- (quinazolin-2-yl) -N, N -Diethylaniline] and the like.
- examples of the near infrared absorbing dye include 2-chloro-3-methyl-6-p- (p-phenylaminophenyl) aminoanilinofluorane, 3,3-bis [1- (4-methoxyphenyl)- 1- (4-Dimethylaminophenyl) ethylene-2-yl] -4,5,6,7-tetrachlorophthalide, 3,6,6'-tris (dimethylamino) spiro [fluorene-9,3'- Phthalide] and the like.
- Examples of the developer include the following.
- Examples of the BPA developer include 4,4′-isopropylidenediphenol, 2,2-bis (4-hydroxyphenyl) -4-methylpentane, 4,4′-isopropylidenebis-o-cresol, 4,4 ′-(1-phenylethylidene) bisphenol, 4,4′-cyclohexylidenebisphenol, 2,2-bis (4-hydroxy-3-phenyl-phenyl) propane, 4,4 ′-(1,3 -Phenylenediisopropylidene) bisphenol, 4,4 '-(1,4-phenylenediisopropylidene) bisphenol, bis (p-hydroxyphenyl) butyl acetate and the like.
- phenols other than the above include N- (2-hydroxyphenyl) -2-[(4-hydroxyphenyl) thio] acetamide, N- (4-hydroxyphenyl) -2-[(4-hydroxyphenyl) Thio] acetamide, N- (2-hydroxyphenyl) -2-[(4-hydroxyphenyl) thio] acetamide and N- (4-hydroxyphenyl) -2-[(4-hydroxyphenyl) thio] acetamide, etc.
- Non-phenolic sulfonylureas include, for example, 4,4′-bis (Np-tolylsulfonylaminocarbonylamino) diphenylmethane, Np-tolylsulfonyl-N′-3- (p-tolylsulfonyloxy) And phenyl urea.
- non-phenols other than the above examples include 4,4′-bis [(4-methyl-3-phenoxycarbonylaminophenylureido)], diphenylsulfone, 3- (3-phenylureido) benzenesulfonamide, bis [ 4- (n-octyloxycarbonylamino) salicylate zinc dihydrate, zinc 4- [2- (4-methoxyphenoxy) ethoxy] salicylate, zinc 3,5-bis ( ⁇ -methylbenzyl) salicylate, etc. It is done.
- fillers examples include silica, clay, kaolin, calcined kaolin, talc, satin white, aluminum hydroxide, calcium carbonate, magnesium carbonate, zinc oxide, titanium oxide, barium sulfate, magnesium silicate, aluminum silicate, plastic pigment, diatomaceous earth, Examples include talc and aluminum hydroxide.
- alkaline earth metal salts, and carbonates such as calcium carbonate and magnesium carbonate can be preferably exemplified.
- the filler is used in an amount of 0.1 to 15 parts by weight, preferably 1 to 10 parts by weight, based on 1 part by weight of the coloring dye. It is also possible to use a mixture of the above fillers.
- dispersant examples include polyvinyl alcohols having various saponification and polymerization degrees such as polyvinyl alcohol, acetoacetylated polyvinyl alcohol, carboxy-modified polyvinyl alcohol, sulfonic acid-modified polyvinyl alcohol, amide-modified polyvinyl alcohol, and butyral-modified vinyl alcohol.
- Cellulose derivatives such as methylcellulose, carboxymethylcellulose, hydroxyethylcellulose, ethylcellulose, acetylcellulose, hydroxymethylcellulose, sodium polyacrylate, polyacrylate, polyacrylamide, starch, sulfosuccinate such as dioctyl sodium sulfosuccinate, dodecylbenzenesulfone Sodium salt, sodium salt of lauryl alcohol sulfate, fatty acid salt Styrene-maleic anhydride copolymer, styrene-butadiene copolymer, polyvinyl chloride, polyvinyl acetate, polyacrylate ester, polyvinyl butyral, polyurethane, polystyrene and copolymers thereof, polyamide resin, silicone resin, petroleum resin Terpene resin, ketone resin, coumaro resin and the like can be raised.
- the dispersant can be used by being dissolved in a solvent such as water, alcohol, ketone,
- antioxidants examples include 2,2′-methylenebis (4-methyl-6-tert-butylphenol), 2,2′-methylenebis (4-ethyl-6-tert-butylphenol), and 4,4′-propyl.
- desensitizer examples include aliphatic higher alcohols, polyethylene glycol, guanidine derivatives and the like.
- anti-sticking agent examples include stearic acid, zinc stearate, calcium stearate, carnauba wax, paraffin wax, ester wax and the like.
- antifoaming agent examples include higher alcohols, fatty acid esters, oils, silicones, polyethers, modified hydrocarbons, paraffins, and the like.
- the light stabilizer examples include salicylic acid ultraviolet absorbers such as phenyl salicylate, pt-butylphenyl salicylate, p-octylphenyl salicylate; 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2- Hydroxy-4-benzyloxybenzophenone, 2-hydroxy-4-octyloxybenzophenone, 2-hydroxy-4-dodecyloxybenzophenone, 2,2'-dihydroxy-4-methoxybenzophenone, 2,2'-dihydroxy-4,4 Benzophenone ultraviolet absorbers such as' -dimethoxybenzophenone, 2-hydroxy-4-methoxy-5-sulfobenzophenone, bis (2-methoxy-4-hydroxy-5-benzoylphenyl) methane; 2- (2'-hydroxy -5'-methylphenyl) benzotriazole, 2- (2'-hydroxy-5'-t-butylphenyl) benzotriazole, 2-
- the recording material of the present invention When the recording material of the present invention is used for heat-sensitive recording paper, it may be carried out in the same manner as in known usage methods.
- the fine particles of the compound of the present invention and the fine particles of the chromogenic dye are each made of polyvinyl alcohol or cellulose. It can be produced by mixing a suspension dispersed in an aqueous solution of a water-soluble binder, applying it to a support such as paper and drying it.
- the ratio of the compound represented by the formula (I) to the color-forming dye is usually 0.01 to 10 parts by weight, preferably 0.5 to 10 parts by weight, more preferably 1 to 1 part by weight of the color-forming dye.
- the ratio is from 0 to 5 parts by mass.
- the proportion of the developer other than the compound represented by the formula (I) to the chromophoric dye is usually 0.01 to 10 parts by mass, preferably 0.5 to 10 parts by mass with respect to 1 part by mass of the chromogenic dye. More preferably, the ratio is 1.0 to 5 parts by mass.
- the recording material of the present invention for pressure-sensitive copying paper, it can be produced in the same manner as when a known developer or sensitizer is used.
- a color forming dye microencapsulated by a known method is dispersed with an appropriate dispersant and applied to paper to produce a color forming sheet.
- a developer dispersion is applied to paper to produce a developer sheet.
- a pressure-sensitive copying paper is produced by combining the two sheets thus produced.
- the pressure-sensitive copying paper consists of an upper sheet carrying and supporting microcapsules containing an organic solvent solution of chromogenic dye on the lower surface and a lower sheet carrying and carrying developer (acidic substance) on the upper surface. It may be a unit or a so-called self-content paper in which a microcapsule and a developer are applied on the same paper surface.
- developer used in this case or as a developer to be used in combination conventionally known ones are used, for example, acid clay, activated clay, apatite, bentonite, colloidal silica, aluminum silicate, magnesium silicate, silicic acid.
- Inorganic acidic substances such as zinc, tin silicate, calcined kaolin and talc; aliphatic carboxylic acids such as oxalic acid, maleic acid, tartaric acid, citric acid, succinic acid and stearic acid; benzoic acid, pt-butylbenzoic acid, phthalic acid Gallic acid, salicylic acid, 3-isopropylsalicylic acid, 3-phenylsalicylic acid, 3-cyclohexylsalicylic acid, 3,5-di-t-butylsalicylic acid, 3-methyl-5-benzylsalicylic acid, 3-phenyl-5- (2, 2-dimethylbenzyl) salicylic acid, 3,5-di- (2-methylbenzyl) salicylic acid, 2-hydroxy Aromatic carboxylic acids such as -1-benzyl-3-naphthoic acid and metal salts of these aromatic carboxylic acids such as zinc, magnesium, aluminum, titanium; p-phenyl
- the support used in the present invention conventionally known paper, synthetic paper, film, plastic film, foamed plastic film, nonwoven fabric, recycled paper such as waste paper pulp, and the like can be used. Moreover, what combined these can also be used as a support body.
- hand coating size breath coater method, roll coater method, air knife coater method, blend coater method, blow coater method, curtain coater method, comma direct method, gravure direct method, gravure reverse method, reverse Roll coater method and the like.
- each mixture of A to D liquids is thoroughly ground with a sand grinder to prepare a dispersion of each component of A to D liquids, and 1 part by weight of A liquid and 0.5 parts by weight of B liquid , 1.5 parts by mass of C liquid and 4 parts by mass of D liquid were mixed to prepare a coating liquid.
- This coating solution was applied and dried on white paper using a wire rod (Webster, wire bar No. 12), and then subjected to a calendering process to prepare a thermal recording paper (the coating solution was in dry mass). About 5.5 g / m 2 ).
- Example 2 to 20 N- (4-hydroxyphenyl) -3-methylcinnamoylamide described in Example 1 was used as a developer described in Table A, and 4-hydroxy-4′-isopropoxydiphenyl sulfone described in Example 1 was used.
- a thermal recording paper was prepared by the method described in Example 1 except that the additives described in Table A were used and the composition of each dispersion in Example 1 was changed to parts by mass described in Table A.
- the developed image is subjected to a heat resistance test at a temperature of 100 ° C in a thermostat (trade name: DK-400, manufactured by YAMATO), and the color image density after 24 hours is measured with a Macbeth reflection densitometer ( Used filter: measured with # 106).
- the optical density of the background after being held was measured with a Macbeth reflection densitometer (filter used: # 106).
- -Heat resistance test A part of the thermal recording paper prepared in Examples 7 to 10 and Comparative Examples 4 to 6 was cut out, and each temperature at 100 ° C and 110 ° C in a thermostatic chamber (trade name: DK-400, manufactured by YAMATO) For 24 hours.
- the optical density of the background after being held was measured with a Macbeth reflection densitometer (filter used: # 106).
- the recording material of the present invention has moisture and heat resistance and heat resistance of the background.
- the recording material of the present invention has moisture and heat resistance and heat resistance of the background.
- an image stabilizer is added, there is almost no change compared to the case where no image stabilizer is added, and there is almost no adverse effect due to the addition that is normally expected.
- a heat resistance test at 110 ° C. extremely good results are obtained. Obtained.
- Test Example 5 (Background light resistance) With respect to Examples 7 to 10 and Comparative Examples 4 to 6, a preservability test was performed on each test paper before and after the test under the following conditions. The results are shown in Table 4.
- -Before test A part of the thermal recording paper prepared in Examples 7 to 10 and Comparative Examples 4 to 6 was cut out, and the background optical density was measured with a Macbeth reflection densitometer (filter used: # 106).
- Test Example 8 Evaluation of background moisture and heat resistance
- a preservability test was performed on each test paper before and after the test under the following conditions. The results are summarized in Tables 8 and 9.
- -Before test A part of the thermal recording paper produced in Examples 11 to 20 and Comparative Examples 7 to 8 was cut out, and the optical density of the background was measured with a Macbeth reflection densitometer (filter used: # 106).
- Humidity and heat resistance test A part of the heat-sensitive recording paper prepared in Examples 11 to 20 and Comparative Examples 7 to 8 was cut out, and the conditions were 50 ° C.
- Test Example 9 (Skin light resistance) With respect to Examples 11 to 20 and Comparative Examples 7 to 8, a preservability test was performed on each test paper before and after the test under the following conditions. The results are shown in Tables 10 and 11. -Before test A part of the thermal recording paper produced in Examples 11 to 20 and Comparative Examples 7 to 8 was cut out, and the optical density of the background was measured with a Macbeth reflection densitometer (filter used: # 106).
- each mixture of liquids A to D is thoroughly ground with a sand grinder to prepare a dispersion of each component of liquids A to D, and 1 part by weight of liquid A, 2 parts by weight of liquid B, C 4 parts by mass of the liquid and 1 part by mass of the D liquid were mixed to obtain a coating liquid.
- This coating solution was applied and dried on white paper using a wire rod (Webster, wire bar No. 12), and then subjected to a calendering process to prepare a thermal recording paper (the coating solution was in dry mass). About 5.5 g / m 2 ).
- Example 22 As described in Example 21, except that 1,2-bis (3-methylphenoxy) ethane was used in place of di (4-methylbenzyl) oxalate in the sensitizer dispersion (liquid D) of Example 21.
- a thermal recording paper was prepared by the method described above.
- a mixture of each composition of A to D liquids is sufficiently ground with a sand grinder to prepare a dispersion of each component of A to D liquids, and 1 part by mass of A liquid, 2 parts by mass of B liquid, C 4 parts by mass of the liquid and 1 part by mass of the D liquid were mixed to obtain a coating liquid.
- This coating solution was applied and dried on white paper using a wire rod (Webster, wire bar No. 12), and then subjected to a calendering process to prepare a thermal recording paper (the coating solution was in dry mass).
- a wire rod Webster, wire bar No. 12
- Example 24 instead of 1,1,3-tris (2-methyl-4-hydroxy-5-cyclohexylphenyl) butane in the sensitizer dispersion (solution D) of Example 23, 1,1,3-tris (2-methyl-4 A thermal recording paper was prepared by the method described in Example 23 except that -hydroxy-5-t-butylphenyl) butane was used.
- Example 10 In the dispersion liquid prepared in Example 23, except for mixing 1 part by mass of A liquid, 2 parts by mass of B liquid, and 4 parts by mass of C liquid to obtain a coating liquid, the thermal recording paper was prepared by the method described in Example 23. Was made.
- each mixture of A to D liquids is thoroughly ground with a sand grinder to prepare a dispersion of each component of A to D liquids, and 1 part by weight of A liquid and 0.5 parts by weight of B liquid , 1.5 parts by mass of C liquid and 4 parts by mass of D liquid were mixed to prepare a coating liquid.
- This coating solution was applied and dried on white paper using a wire rod (Webster, wire bar No. 12), and then subjected to a calendering process to prepare a thermal recording paper (the coating solution was in dry mass). About 5.5 g / m 2 ).
- Example 26 According to the method described in Example 25, except that the composition of each dispersion liquid of Example 25 was 1 part by mass of A liquid, 1.0 part by mass of B liquid, 1.0 part by mass of C liquid, and 4 parts by mass of D liquid. A thermal recording paper was prepared.
- Example 27 According to the method described in Example 25, except that the composition of each dispersion in Example 25 was set to 1 part by mass of A liquid, 0.5 part by mass of B liquid, 1.5 parts by mass of C liquid, and 4 parts by mass of D liquid. A thermal recording paper was prepared.
- a mixture of each composition of A, B, D and E liquids is sufficiently ground with a sand grinder to prepare a dispersion of each component of A, B, D and E liquids.
- B liquid 0.5 mass part, E liquid 1.5 mass part, D liquid 4 mass part was mixed and it was set as the coating liquid.
- This coating solution was applied and dried on white paper using a wire rod (Webster, wire bar No. 12), and then subjected to a calendering process to prepare a thermal recording paper (the coating solution was in dry mass). About 5.5 g / m 2 ).
- Example 29 According to the method described in Example 28, except that the composition of each dispersion liquid of Example 28 was 1 part by mass of A liquid, 1.0 part by mass of B liquid, 1.0 part by mass of E liquid, and 4 parts by mass of D liquid. A thermal recording paper was prepared.
- Example 30 The composition described in Example 28 was the same as that of Example 28 except that the composition of each dispersion liquid was 1 part by mass of liquid A, 0.5 part by mass of liquid B, 1.5 parts by mass of liquid E, and 4 parts by mass of liquid D.
- a thermal recording paper was prepared.
- Example 11 A thermal recording paper was prepared by the method described in Example 28 except that the composition of each dispersion in Example 28 was changed to 1 part by mass of Liquid A, 1.0 part by mass of Liquid B, and 4 parts by mass of Liquid D.
- Example 12 A thermal recording paper was prepared by the method described in Example 28 except that the composition of each dispersion in Example 28 was changed to 1 part by mass of Liquid A, 1.0 part by mass of Liquid C, and 4 parts by mass of D4.
- Example 13 A thermal recording paper was prepared by the method described in Example 28 except that the composition of each dispersion in Example 28 was changed to 1 part by mass of Liquid A, 1.5 parts by mass of Liquid E, and 4 parts by mass of Liquid D.
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Abstract
Description
本願は、2009年9月29日に出願された日本国特許出願第2009-224317号、2009年9月29日に出願された日本国特許出願第2009-224094号、2009年10月16日に出願された日本国特許出願第2009-239571号に対し優先権を主張し、その内容をここに援用する。
(2)式(I)で表される化合物が、式(II)
(3)式(I)で表される化合物が、式(III)
さらに、(4)添加剤が、式(IV)
又は式(V)
(5)式(IV)で表される化合物が、式(VI)
(6)式(V)で表される化合物が、式(VII)
(7)添加剤が、画像安定剤であることを特徴とする前記(1)~(3)のいずれかに記載の記録材料、
(8)画像安定剤がヒンダードフェノール化合物であることを特徴とする前記(7)に記載の記録材料、
(9)画像安定剤が式(VIII)
(10)式(VIII)で表されるヒンダードフェノール化合物のR15が式(IX)
(11)添加剤が、増感剤であることを特徴とする前記(1)~(3)のいずれかに記載の記録材料、
(12)発色性染料がフルオラン系染料であることを特徴とする前記(1)~(11)のいずれかに記載の記録材料、及び
(13)支持体上に前記(1)~(12)のいずれかに記載の記録材料から形成されてなる記録材料層を有する記録シートである。
本発明の記録材料は発色性染料を含有する記録材料において、式(I)で表される化合物の少なくとも1種、及び添加剤を含有することを特徴とする。
式(I)で表される化合物の式中、R1及びR4は、それぞれ独立して水酸基、ハロゲン原子、C1~C6アルキル基又はC1~C6アルコキシ基を表す。具体的にはハロゲン原子として、フッ素原子、塩素原子、臭素原子、ヨウ素原子等を例示でき、C1~C6アルキル基として、メチル基、エチル基、n-プロピル基、イソプロピル基、n-ブチル基、sec-ブチル基、t-ブチル基、イソブチル基、n-ペンチル基、イソペンチル基、ネオペンチル基、t-ペンチル基、n-ヘキシル基、イソヘキシル基、1-メチルペンチル基、2-メチルペンチル基等を例示でき、C1~C6アルコキシ基として、メトキシ基、エトキシ基、n-プロポキシ基、イソプロポキシ基、n-ブトキシ基、sec-ブトキシ基、t-ブトキシ基、イソブトキシ基、n-ペントキシ基、イソペントキシ基、ネオペントキシ基、t-ペントキシ基、n-ヘキソキシ基、イソヘキソキシ基、1-メチルペントキシ基、2-メチルペントキシ基等を例示することができる。
式(III)で表される化合物としてより具体的には、N-(2-ヒドロキシフェニル)-シンナモイルアミド等を例示することができる。
本発明で添加剤とは、発色性染料を含有する記録材料において特定の桂皮酸アミド系化合物を組み合わせた記録材料に対して、発色性能を向上させることや画像安定性能を向上させること等の性能向上を目的に添加される化合物である。添加剤は必要に応じて1種又は2種以上含有させることができる。添加剤の使用量は、発色性染料1質量部に対して、通常0.1~15質量部、好ましくは0.5~10質量部の範囲である。
以下に本発明の添加剤を例示するが、これらの化合物に限定されるものではない。
本発明では式(I)で表される化合物の少なくとも1種と式(I)以外の顕色剤とを組合わせて使用する場合は、好ましくは式(IV)及び/又は式(V)で表される化合物との組み合わせである。
式(IV)中、R81及びR82は、それぞれ独立して水酸基、ハロゲン原子、C1~C6アルキル基又はC2~C6アルケニル基を表す。具体的には、ハロゲン原子、C1~C6アルキル基は、R1の具体例と同様のものを例示することができ、C2~C6アルケニル基として、ビニル基、アリル基、イソプロペニル基、1-プロペニル基、2-プロペニル基、1-ブテニル基、2-ブテニル基、3-ブテニル基、1,3-ブタンジエニル基、又は2-メチル-2-プロペニル基等を例示することができる。
R9は水素原子、C1~C6アルキル基、又はC2~C6アルケニル基を表す。C1~C6アルキル基は、R1の具体例と同様のものを例示することができ、C2~C6アルケニル基はR81の具体例と同様のものを例示することができる。
式(V)中、R101~R106は、それぞれ独立して、ハロゲン原子、C1~C6アルキル基又はC2~C6アルケニル基を表し、Yは、直鎖又は分枝を有するC1~C12の飽和又は不飽和であって、エーテル結合を有してもよい炭化水素基、又は、次式
TのC1~C4アルキル基は、R1の具体例として例示されたもののうち、C1~C4の条件を満たすものを例示することができる。
Yは、メチレン基、エチレン基、トリメチレン基、テトラメチレン基、ペンタメチレン基、ヘキサメチレン基、ヘプタメチレン基、オクタメチレン基、ノナメチレン基、デカメチレン基、ウンデカメチレン基、ドデカメチレン基、メチルメチレン基、ジメチルメチレン基、メチルエチレン基、メチレンエチレン基、エチルエチレン基、1,2-ジメチルエチレン基、1-メチルトリメチレン基、1-メチルテトラメチレン基、1,3-ジメチルトリメチレン基、1-エチル-4-メチル-テトラメチレン基、ビニレン基、プロペニレン基、2-ブテニレン基、エチニレン基、2-ブチニレン基、1-ビニルエチレン基、エチレンオキシエチレン基、テトラメチレンオキシテトラメチレン基、エチレンオキシエチレンオキシエチレン基、エチレンオキシメチレンオキシエチレン基、1,3-ジオキサン-5,5-ビスメチレン基、1,2-キシリル基、1,3-キシリル基、1,4-キシリル基、2-ヒドロキシトリメチレン基、2-ヒドロキシ-2-メチルトリメチレン基、2-ヒドロキシ2-エチルトリメチレン基、2-ヒドロキシ-2-プロピルトリメチレン基、2-ヒドロキシ-2-イソプロピルトリメチレン基、2-ヒドロキシ-2-ブチルトリメチレン基などを例示できる。
本発明で用いられる画像安定剤としては、具体的には、以下のものを例示できる。
4-ベンジルオキシ-4’-(2-メチルグリシジルオキシ)-ジフェニルスルホン、4,4’-ジグリシジルオキシジフェニルスルホン等のエポキシ基含有ジフェニルスルホン類;1,4-ジグリシジルオキシベンゼン、4-[α-(ヒドロキシメチル)ベンジルオキシ]-4’-ヒドロキシジフェニルスルホン、2-プロパノール誘導体、サリチル酸誘導体、オキシナフトエ酸誘導体の金属塩(特に亜鉛塩)、2,2-メチレンビス(4,6-t-ブチルフェニル)フォスフェイトの金属塩、その他水不溶性の亜鉛化合物、2,2-ビス(4’-ヒドロキシ-3’,5’-ジブロモフェニル)プロパン、4,4’-スルホニルビス(2,6-ジブロモフェノール)、4 ,4 ’-ブチリデン(6-t-ブチル-3-メチルフェノール)、2,2’-メチレン-ビス(4-メチル-6-t-ブチルフェノール)、2,2’-メチレン-ビス(4-エチル-6-t-ブチルフェノール)、2,2 ’-ジ-t-ブチル-5,5 ’-ジメチル-4 ,4 ’-スルホニルジフェノール、1 ,1 ,3-トリス(2-メチル-4-ヒドロキシ-5-シクロヘキシルフェニル)ブタン、1,1,3-トリス(2-メチル-4-ヒドロキシ- 5-t- ブチルフェニル)ブタン等のヒンダードフェノール化合物、フェノールノボラック型化合物、エポキシレジン等をあげることができる。
また、画像安定剤として好ましくはヒンダードフェノール化合物である。ヒンダードフェノール化合物は、水酸基の両方のオルト位にt-ブチル基などの嵩高い置換基を有するフェノール構造を持つものだけでなく、水酸基のオルト位に2級または3級炭素で結合したC1~C6アルキル基が少なくとも1種置換していればよく、該アルキル基はシクロヘキシル基のように環化していてもよい。ヒンダードフェノール構造を有する部位は、一分子中にいくつ存在してもよい。
本発明で用いられる増感剤としては、具体的には、以下のものを例示できる。
ステアリン酸アミド、ステアリン酸アニリド、またはパルチミン酸アミド等の高級脂肪酸アミド類;
ベンズアミド、アセト酢酸アニリド、チオアセトアニリドアクリル酸アミド、エチレンビスアミド、オルトトルエンスルホンアミド、パラトルエンスルホンアミド等のアミド類;
フタル酸ジメチル、イソフタル酸ジベンジル、イソフタル酸ジメチル、テレフタル酸ジメチル、イソフタル酸ジエチル、イソフタル酸ジフェニル、テレフタル酸ジベンジル等のフタル酸ジエステル類;
シュウ酸ジベンジル、シュウ酸ジ(4-メチルベンジル)、シュウ酸ジ(4-クロロベンジル)、シュウ酸ベンジルとシュウ酸ジ(4-クロロベンジル)の等量混合物、シュウ酸ジ(4-クロロベンジル)とシュウ酸ジ(4-メチルベンジル)の等量混合物等のシュウ酸ジエステル類;
2,2’-メチレンビス(4-メチル-6-t-ブチルフェノール)、4,4’-メチレン-ビス-2,6-ジ-t-ブチルフェノール等のビス(t-ブチルフェノール)類;
4,4’-ジメトキシジフェニルスルホン、4,4’-ジエトキシジフェニルスルホン、4,4’-ジプロポキシジフェニルスルホン、4,4’-ジイソプロポキシジフェニルスルホン、4,4’-ジブトキシジフェニルスルホン、4,4’-ジイソブトキシジフェニルスルホン、4,4’-ジペンチルオキシジフェニルスルホン、4,4’-ジヘキシルオキシジフェニルスルホン、4,4’-ジアリルオキシジフェニルスルホン等の4,4’-ジヒドロキシジフェニルスルホンのジエーテル類;
2,4’-ジメトキシジフェニルスルホン、2,4’-ジエトキシジフェニルスルホン、2,4’-ジプロポキシジフェニルスルホン、2,4’-ジイソプロポキシジフェニルスルホン、2,4’-ジブトキシジフェニルスルホン、2,4’-ジイソブトキシジフェニルスルホン、2,4’-ジペンチルオキシジフェニルスルホン、2,4’-ジヘキシルオキシジフェニルスルホン、2,4’-ジアリルオキシジフェニルスルホン等の2,4’-ジヒドロキシジフェニルスルホンのジエーテル類;
炭酸ジフェニル、グアイアコールカーボネート、 ジ-p-トリルカーボネート、フェニル-α-ナフチルカーボネート等の炭酸誘導体;
本発明の記録材料の中には、発色性染料、式(I)、式(IV)及び式(V)で表される化合物以外に公知の顕色剤、増感剤、画像安定剤、填料、分散剤、酸化防止剤、減感剤、粘着防止剤、消泡剤、光安定剤、蛍光増白剤等を必要に応じ1種又は2種以上含有させることができる。それぞれの使用量は、発色性染料1質量部に対して、通常0.1~15質量部、好ましくは0.5~10質量部の範囲である。
BPA系顕色剤としては、例えば、4,4’-イソプロピリデンジフェノール、2,2-ビス(4-ヒドロキシフェニル)-4-メチルペンタン、4,4’-イソプロピリデンビス-o-クレゾール、4,4’-(1-フェニルエチリデン)ビスフェノール、4,4’-シクロヘキシリデンビスフェノール、2,2-ビス(4-ヒドロキシ-3-フェニル-フェニル)プロパン、4,4’-(1,3-フェニレンジイソプロピリデン)ビスフェノール、4,4’-(1,4-フェニレンジイソプロピリデン)ビスフェノール、ビス(p-ヒドロキシフェニル)酢酸ブチル等があげられる。
分散剤は水、アルコール、ケトン、エステル、炭化水素等の溶剤に溶かして使用するほか、水又は他の溶媒中に乳化あるいはペースト状に分散させた状態で使用することも可能である。
本発明の記録材料を感熱記録紙に使用する場合には、既知の使用方法と同様に行えばよく、例えば、本発明の化合物の微粒子及び発色性染料の微粒子のそれぞれをポリビニルアルコールやセルロース等の水溶性結合剤の水溶液中に分散された懸濁液を混合して紙等の支持体に塗布して乾燥することにより製造できる。
[実施例1]
実施例1に記載のN-(4-ヒドロキシフェニル)-3-メチルシンナモイルアミドを表Aに記載の顕色剤とし、実施例1に記載の4-ヒドロキシ-4’-イソプロポキシジフェニルスルホンを表Aに記載の添加剤とし、実施例1の各分散液の組成を表Aに記載の質量部とした以外は、実施例1記載の方法で感熱記録紙を作製した。
実施例1に記載のN-(4-ヒドロキシフェニル)-3-メチルシンナモイルアミドを表Aに記載の顕色剤とし、実施例1に記載の4-ヒドロキシ-4’-イソプロポキシジフェニルスルホンを表Aに記載の添加剤とし、実施例1の各分散液の組成を表Aに記載の質量部とした以外は、実施例1記載の方法で感熱記録紙を作製した。
実施例1~6及び比較例1~3に関して、試験前後の各試験紙について以下の条件で保存性試験を行った。その結果から判定した評価を第2表にまとめて示した。
・試験前
実施例1~6及び比較例1~3で作製した感熱記録紙の一部を切り取り、地肌の光学濃度をマクベス反射濃度計(使用フィルター:#106)で測定した。
・耐湿熱性試験
実施例1~6及び比較例1~3で作製した感熱記録紙の一部を切り取り、低温恒温恒湿器(商品名:THN050FA、ADVANTEC製)中で50℃、80%の条件で24時間保持した。保持した後の地肌の光学濃度をマクベス反射濃度計(使用フィルター:#106)で測定した。
実施例1~6及び比較例1~3に関して、試験前後の各試験紙について以下の条件で保存性試験を行った。その結果から判定した評価を第2表に示した。
・試験前
実施例1~6及び比較例1~3で作製した感熱記録紙の一部を切り取り、地肌の光学濃度をマクベス反射濃度計(使用フィルター:#106)で測定した。
・地肌耐光性試験
実施例1~6及び比較例1~3で作製した感熱記録紙の一部を切り取り、耐光性試験機(商品名:紫外線ロングライフフェードメーター U48型、スガ試験機(株)製)を使用して耐光性試験を行い、8時間後の地肌の光学濃度をマクベス反射濃度計(使用フィルター#47)で測定した。
実施例1~6及び比較例1~3に関して、各試験紙について以下の条件で保存性試験を行った。その結果から判定した評価を第2表にまとめて示した。
・試験前
実施例1~6及び比較例1~3で作製した感熱記録紙の一部を切り取り、感熱紙発色試験装置(商品名:TH-PMH型、大倉電機製)を使用し、印字電圧17V、パルス幅1.8msの条件で発色させ、発色画像濃度をマクベス反射濃度計(使用フィルター:#106)で測定した。
・画像耐熱性試験
発色させた画像を、恒温器(商品名:DK-400,YAMATO製)中で100℃の温度で耐熱性試験を行い、24時間後の発色画像濃度をマクベス反射濃度計(使用フィルター:#106)で測定した。
実施例7~10及び比較例4~6に関して、試験前後の各試験紙について以下の各条件で保存性試験を行った。その結果を第3表にまとめて示した。
・試験前
実施例7~10及び比較例4~6で作製した感熱記録紙の一部を切り取り、地肌光学濃度をマクベス反射濃度計(使用フィルター:#106)で測定した。
・耐湿熱性試験
実施例7~10及び比較例4~6で作製した感熱記録紙の一部を切り取り、低温恒温恒湿器(商品名:THN050FA、ADVANTEC製)中で50℃、80%の条件で24時間保持した。保持した後の地肌の光学濃度をマクベス反射濃度計(使用フィルター:#106)で測定した。
・耐熱性試験
実施例7~10及び比較例4~6で作製した感熱記録紙の一部を切り取り、恒温器(商品名:DK-400、YAMATO製)中で100℃、110℃の各温度で24時間保持した。保持した後の地肌の光学濃度をマクベス反射濃度計(使用フィルター:#106)で測定した。
実施例7~10及び比較例4~6に関して、試験前後の各試験紙について以下の各条件で保存性試験を行った。その結果を第4表に示した。
・試験前
実施例7~10及び比較例4~6で作製した感熱記録紙の一部を切り取り、地肌光学濃度をマクベス反射濃度計(使用フィルター:#106)で測定した。
・地肌耐光性
実施例7~10及び比較例4~6で作製した感熱記録紙の一部を切り取り、耐光性試験機(商品名:紫外線ロングライフフェードメーター U48型、スガ試験機(株)製)を使用して耐光性試験を行い、12時間後、24時間後の地肌濃度をマクベス反射濃度計(使用フィルター#47)で測定した。
実施例7~10及び比較例4~6に関して、各試験紙について以下の各条件で保存性試験を行った。その結果を第5表にまとめて示した。
実施例7~10及び比較例4~6で作製した感熱記録紙の一部を切り取り、感熱紙発色試験装置(商品名:TH-PMH型、大倉電機製)を使用し、印字電圧17V、パルス幅1.8msの条件で発色させ、発色画像濃度をマクベス反射濃度計(使用フィルター:#106)で測定した。その発色画像について、恒温器(商品名:DK-400,YAMATO製)中で100℃の温度で耐熱性試験を行い、24時間後の発色画像濃度をマクベス反射濃度計(使用フィルター:#106)で測定した。
(動的発色感度)
実施例11~20及び比較例7~8で作製した各記録紙の一部を切り取り、感熱紙発色試験装置(商品名:TH-PMH型、大倉電機製)を使用して動的発色感度試験を行い、印字電圧17V、パルス幅0.2、0.35、0.5、0.65、0.8、0.95、1.1、1.25、1.4、1.6、1.8msの各条件で発色させた後、その印字濃度をマクベス反射濃度計(使用フィルター#106)で測定した。
その結果を第1図~第2図にまとめて示した。また、代表的な値として1.1及び1.25msの条件で発色させた値を第6表及び第7表に記載した。
(地肌耐湿熱性・耐熱性の評価)
実施例11~20及び比較例7~8に関して、試験前後の各試験紙について以下の各条件で保存性試験を行った。その結果を第8表及び第9表にまとめて示した。
・試験前
実施例11~20及び比較例7~8で作製した感熱記録紙の一部を切り取り、地肌の光学濃度をマクベス反射濃度計(使用フィルター:#106)で測定した。
・耐湿熱性試験
実施例11~20及び比較例7~8で作製した感熱記録紙の一部を切り取り、低温恒温恒湿器(商品名:THN050FA、ADVANTEC製)中で50℃、80%の条件で24時間保持した。保持した後の地肌の光学濃度をマクベス反射濃度計(使用フィルター:#106)で測定した。
・耐熱性試験
実施例11~20及び比較例7~8で作製した感熱記録紙の一部を切り取り、恒温器(商品名:DK-400、YAMATO製)中で100℃、120℃の各温度で24時間保持した。保持した後の地肌の光学濃度をマクベス反射濃度計(使用フィルター:#106)で測定した。
(地肌耐光性)
実施例11~20及び比較例7~8に関して、試験前後の各試験紙について以下の各条件で保存性試験を行った。その結果を第10表及び第11表に示した。
・試験前
実施例11~20及び比較例7~8で作製した感熱記録紙の一部を切り取り、地肌の光学濃度をマクベス反射濃度計(使用フィルター:#106)で測定した。
・地肌耐光性
実施例11~20及び比較例7~8で作製した感熱記録紙の一部を切り取り、耐光性試験機(商品名:紫外線ロングライフフェードメーター U48型、スガ試験機(株)製)を使用して耐光性試験を行い、12時間後、24時間後の地肌濃度をマクベス反射濃度計(使用フィルター#106及び#47)で測定した。
(増感剤処方;感熱記録紙の作成)
実施例21の増感剤分散液(D液)中、シュウ酸ジ(4-メチルベンジル)の代わりに1,2-ビス(3-メチルフェノキシ)エタンを用いた以外は、実施例21に記載の方法で感熱記録紙を作製した。
実施例21で調製した分散液のうち、A液1質量部、B液2質量部、C液4質量部を混合して塗布液とした以外は、実施例21に記載の方法で感熱記録紙を作製した。
(動的発色感度)
(地肌耐光性)
(画像安定剤処方;感熱記録紙の作成)
実施例23の増感剤分散液(D液)中、1,1,3-トリス(2-メチルー4-ヒドロキシー5-シクロヘキシルフェニル)ブタンの代わりに1,1,3-トリス(2-メチルー4-ヒドロキシー5-t―ブチルフェニル)ブタンを用いた以外は、実施例23に記載の方法で感熱記録紙を作製した。
実施例23で調製した分散液のうち、A液1質量部、B液2質量部、C液4質量部を混合して塗布液とした以外は、実施例23に記載の方法で感熱記録紙を作製した。
(地肌耐光性)
(画像耐熱性)
(顕色剤処方;感熱記録紙の作成)
実施例25の各分散液の組成をA液1質量部、B液1.0質量部、C液1.0質量部、D液4質量部とした以外は、実施例25に記載の方法で感熱記録紙を作製した。
実施例25の各分散液の組成をA液1質量部、B液0.5質量部、C液1.5質量部、D液4質量部とした以外は、実施例25に記載の方法で感熱記録紙を作製した。
(感熱記録紙の作成)
実施例28の各分散液の組成をA液1質量部、B液1.0質量部、E液1.0質量部、D液4質量部とした以外は、実施例28に記載の方法で感熱記録紙を作製した。
実施例28の各分散液の組成をA液1質量部、B液0.5質量部、E液1.5質量部、D液4質量部とした以外は、実施例28に記載の方法で感熱記録紙を作製した。
実施例28の各分散液の組成をA液1質量部、B液1.0質量部、D液4質量部とした以外は、実施例28に記載の方法で感熱記録紙を作製した。
実施例28の各分散液の組成をA液1質量部、C液1.0質量部、D4質量部とした以外は、実施例28に記載の方法で感熱記録紙を作製した。
実施例28の各分散液の組成をA液1質量部、E液1.5質量部、D液4質量部とした以外は、実施例28に記載の方法で感熱記録紙を作製した。
(動的発色感度)
(画像耐熱性)
Claims (13)
- 発色性染料を含有する記録材料において、式(I)
- 添加剤が、式(IV)
又は式(V)
- 添加剤が、画像安定剤であることを特徴とする請求項1~3のいずれかに記載の記録材料。
- 画像安定剤がヒンダードフェノール化合物であることを特徴とする請求項7に記載の記録材料。
- 添加剤が、増感剤であることを特徴とする請求項1~3のいずれかに記載の記録材料。
- 発色性染料がフルオラン系染料であることを特徴とする請求項1~11のいずれかに記載の記録材料。
- 支持体上に請求項1~12のいずれかに記載の記録材料から形成されてなる記録材料層を有する記録シート。
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EP10820109.6A EP2484534B1 (en) | 2009-09-29 | 2010-09-27 | Recording material using phenolic compound |
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US13/261,235 US8551911B2 (en) | 2009-09-29 | 2010-09-27 | Recording material using phenolic compound |
BR112012007575-6A BR112012007575B1 (pt) | 2009-09-29 | 2010-09-27 | Material de gravação que contém um composto formador de cor e folha de gravação |
JP2011534063A JP5713505B2 (ja) | 2009-09-29 | 2010-09-27 | フェノール性化合物を用いた記録材料 |
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- 2010-09-27 KR KR1020127007157A patent/KR101323543B1/ko active IP Right Grant
- 2010-09-27 ES ES10820109T patent/ES2720155T3/es active Active
- 2010-09-27 BR BR112012007575-6A patent/BR112012007575B1/pt not_active IP Right Cessation
- 2010-09-27 TW TW099132658A patent/TWI423944B/zh not_active IP Right Cessation
- 2010-09-27 EP EP10820109.6A patent/EP2484534B1/en not_active Not-in-force
- 2010-09-27 US US13/261,235 patent/US8551911B2/en active Active
- 2010-09-27 WO PCT/JP2010/005788 patent/WO2011039987A1/ja active Application Filing
- 2010-09-27 CN CN201080042655.5A patent/CN102548768B/zh not_active Expired - Fee Related
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2014
- 2014-08-18 JP JP2014165907A patent/JP2015006797A/ja not_active Withdrawn
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See also references of EP2484534A4 |
Also Published As
Publication number | Publication date |
---|---|
ES2720155T3 (es) | 2019-07-18 |
JP5713505B2 (ja) | 2015-05-07 |
JP2015006797A (ja) | 2015-01-15 |
EP2484534B1 (en) | 2019-01-16 |
CN102548768A (zh) | 2012-07-04 |
TWI423944B (zh) | 2014-01-21 |
KR20120059565A (ko) | 2012-06-08 |
TW201127789A (en) | 2011-08-16 |
BR112012007575B1 (pt) | 2020-03-24 |
EP2484534A4 (en) | 2013-09-04 |
US20120186490A1 (en) | 2012-07-26 |
BR112012007575A2 (pt) | 2016-08-16 |
JPWO2011039987A1 (ja) | 2013-02-21 |
CN102548768B (zh) | 2014-06-25 |
KR101323543B1 (ko) | 2013-10-29 |
EP2484534A1 (en) | 2012-08-08 |
US8551911B2 (en) | 2013-10-08 |
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