WO2017047572A1 - 感熱記録材料 - Google Patents
感熱記録材料 Download PDFInfo
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- WO2017047572A1 WO2017047572A1 PCT/JP2016/076929 JP2016076929W WO2017047572A1 WO 2017047572 A1 WO2017047572 A1 WO 2017047572A1 JP 2016076929 W JP2016076929 W JP 2016076929W WO 2017047572 A1 WO2017047572 A1 WO 2017047572A1
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- tolylaminocarbonyl
- heat
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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
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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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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C237/00—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by amino groups
- C07C237/28—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by amino groups having the carbon atom of at least one of the carboxamide groups bound to a carbon atom of a non-condensed six-membered aromatic ring of the carbon skeleton
- C07C237/40—Carboxylic acid amides, the carbon skeleton of the acid part being further substituted by amino groups having the carbon atom of at least one of the carboxamide groups bound to a carbon atom of a non-condensed six-membered aromatic ring of the carbon skeleton having the nitrogen atom of the carboxamide group bound to a carbon atom of a six-membered aromatic ring
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C275/00—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C275/28—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
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- C07C275/00—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C275/28—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
- C07C275/42—Derivatives of urea, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups having nitrogen atoms of urea groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton being further substituted by carboxyl groups
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C311/00—Amides of sulfonic acids, i.e. compounds having singly-bound oxygen atoms of sulfo groups replaced by nitrogen atoms, not being part of nitro or nitroso groups
- C07C311/15—Sulfonamides having sulfur atoms of sulfonamide groups bound to carbon atoms of six-membered aromatic rings
- C07C311/16—Sulfonamides having sulfur atoms of sulfonamide groups bound to carbon atoms of six-membered aromatic rings having the nitrogen atom of at least one of the sulfonamide groups bound to hydrogen atoms or to an acyclic carbon atom
- C07C311/19—Sulfonamides having sulfur atoms of sulfonamide groups bound to carbon atoms of six-membered aromatic rings having the nitrogen atom of at least one of the sulfonamide groups bound to hydrogen atoms or to an acyclic carbon atom to an acyclic carbon atom of a hydrocarbon radical substituted by carboxyl groups
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C311/00—Amides of sulfonic acids, i.e. compounds having singly-bound oxygen atoms of sulfo groups replaced by nitrogen atoms, not being part of nitro or nitroso groups
- C07C311/30—Sulfonamides, the carbon skeleton of the acid part being further substituted by singly-bound nitrogen atoms, not being part of nitro or nitroso groups
- C07C311/37—Sulfonamides, the carbon skeleton of the acid part being further substituted by singly-bound nitrogen atoms, not being part of nitro or nitroso groups having the sulfur atom of at least one of the sulfonamide groups bound to a carbon atom of a six-membered aromatic ring
- C07C311/38—Sulfonamides, the carbon skeleton of the acid part being further substituted by singly-bound nitrogen atoms, not being part of nitro or nitroso groups having the sulfur atom of at least one of the sulfonamide groups bound to a carbon atom of a six-membered aromatic ring having sulfur atoms of sulfonamide groups and amino groups bound to carbon atoms of six-membered rings of the same carbon skeleton
- C07C311/39—Sulfonamides, the carbon skeleton of the acid part being further substituted by singly-bound nitrogen atoms, not being part of nitro or nitroso groups having the sulfur atom of at least one of the sulfonamide groups bound to a carbon atom of a six-membered aromatic ring having sulfur atoms of sulfonamide groups and amino groups bound to carbon atoms of six-membered rings of the same carbon skeleton having the nitrogen atom of at least one of the sulfonamide groups bound to hydrogen atoms or to an acyclic carbon atom
- C07C311/42—Sulfonamides, the carbon skeleton of the acid part being further substituted by singly-bound nitrogen atoms, not being part of nitro or nitroso groups having the sulfur atom of at least one of the sulfonamide groups bound to a carbon atom of a six-membered aromatic ring having sulfur atoms of sulfonamide groups and amino groups bound to carbon atoms of six-membered rings of the same carbon skeleton having the nitrogen atom of at least one of the sulfonamide groups bound to hydrogen atoms or to an acyclic carbon atom to an acyclic carbon atom of a hydrocarbon radical substituted by carboxyl groups
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C311/00—Amides of sulfonic acids, i.e. compounds having singly-bound oxygen atoms of sulfo groups replaced by nitrogen atoms, not being part of nitro or nitroso groups
- C07C311/50—Compounds containing any of the groups, X being a hetero atom, Y being any atom
- C07C311/51—Y being a hydrogen or a carbon atom
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C311/00—Amides of sulfonic acids, i.e. compounds having singly-bound oxygen atoms of sulfo groups replaced by nitrogen atoms, not being part of nitro or nitroso groups
- C07C311/50—Compounds containing any of the groups, X being a hetero atom, Y being any atom
- C07C311/52—Y being a hetero atom
- C07C311/54—Y being a hetero atom either X or Y, but not both, being nitrogen atoms, e.g. N-sulfonylurea
- C07C311/57—Y being a hetero atom either X or Y, but not both, being nitrogen atoms, e.g. N-sulfonylurea having sulfur atoms of the sulfonylurea groups bound to carbon atoms of six-membered aromatic rings
- C07C311/58—Y being a hetero atom either X or Y, but not both, being nitrogen atoms, e.g. N-sulfonylurea having sulfur atoms of the sulfonylurea groups bound to carbon atoms of six-membered aromatic rings having nitrogen atoms of the sulfonylurea groups bound to hydrogen atoms or to acyclic carbon atoms
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C323/00—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
- C07C323/50—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton
- C07C323/51—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton
- C07C323/57—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton being further substituted by nitrogen atoms, not being part of nitro or nitroso groups
- C07C323/58—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton being further substituted by nitrogen atoms, not being part of nitro or nitroso groups with amino groups bound to the carbon skeleton
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C335/00—Thioureas, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
- C07C335/04—Derivatives of thiourea
- C07C335/16—Derivatives of thiourea having nitrogen atoms of thiourea groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
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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
- B41M5/327—Organic colour formers, e.g. leuco dyes with a lactone or lactam ring
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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
- B41M5/327—Organic colour formers, e.g. leuco dyes with a lactone or lactam ring
- B41M5/3275—Fluoran 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
- B41M5/337—Additives; Binders
- B41M5/3375—Non-macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C323/00—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups
- C07C323/50—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton
- C07C323/51—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton
- C07C323/57—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton being further substituted by nitrogen atoms, not being part of nitro or nitroso groups
- C07C323/58—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton being further substituted by nitrogen atoms, not being part of nitro or nitroso groups with amino groups bound to the carbon skeleton
- C07C323/59—Thiols, sulfides, hydropolysulfides or polysulfides substituted by halogen, oxygen or nitrogen atoms, or by sulfur atoms not being part of thio groups containing thio groups and carboxyl groups bound to the same carbon skeleton having the sulfur atoms of the thio groups bound to acyclic carbon atoms of the carbon skeleton the carbon skeleton being further substituted by nitrogen atoms, not being part of nitro or nitroso groups with amino groups bound to the carbon skeleton with acylated amino groups bound to the carbon skeleton
Definitions
- the present invention relates to a heat-sensitive recording material, and more particularly to a heat-sensitive recording material using an N-substituted amino acid derivative as a developer.
- This application includes Japanese Patent Application No. 2015-185024 filed in Japan on September 18, 2015, Japanese Patent Application No. 2016-041569 filed in Japan on March 3, 2016, and July 15, 2016 Claim priority based on Japanese Patent Application No. 2016-140814 filed in Japan, the contents of which are incorporated herein.
- a heat-sensitive recording material is a color-sensitive recording material obtained by adding a colorless or light-colored basic dye and an organic developer at room temperature to heat energy (diure heat) of a heat-sensitive head, heat pen, etc.
- heat energy diure heat
- the performance required for the heat-sensitive recording material includes the whiteness of the unprinted portion, the whiteness of the unprinted portion under various environmental conditions, the color density of the printed portion, and the storage stability of the printed portion.
- the storage stability of the printed part means the performance that does not disappear when the printed image is placed in a high humidity environment, when water adheres, when oils adhere, or when a plasticizer adheres. To do.
- the required performance of printing formed by a heat-sensitive recording material largely depends on dyes, developers, and sensitizers that are the main components of the heat-sensitive recording material, and is particularly affected by the developer.
- synthetic compounds derived from petrochemicals such as phenolic compounds and sulfonylurea compounds have been proposed as color developers that satisfy the above required performance.
- many phenolic compounds have been developed and put into practical use.
- phenolic compounds are suspected of endocrine disruptors and their use tends to be suppressed.
- bisphenol A (2,2-bis (4-hydroxyphenyl) propane
- Bisphenol S (4,4'-dihydroxydiphenylsulfone) is registered as a designated chemical substance and regulated as a second monitoring chemical substance in the law concerning the examination and manufacturing regulations of chemical substances before revision due to suspicion of chromosomal abnormalities, etc. It had been.
- Patent Document 1 There is a proposal that a synthetic compound such as 4,4'-diaminodiphenylalkane is used as a raw material as a non-phenolic developer such as a sulfonylurea compound (Patent Document 1).
- a non-phenolic developer such as a sulfonylurea compound
- Patent Document 2 The use of a non-phenolic developer using an acylated amino acid mainly composed of a natural amino acid has been proposed (Patent Document 2).
- Patent Document 3 a heat-sensitive recording material that obtains an image by applying a browning reaction (Maillard reaction) by heating amino acids and saccharides has been proposed.
- the sulfonylurea compound proposed in Patent Document 1 has problems such as using as a raw material a synthetic compound having a molecular structure similar to bisphenol A as a constituent component, and a demand as a color developer for a thermal recording material. It was not enough for performance.
- Patent Document 2 Although the use of a developer using an acylated amino acid made of a natural amino acid as the main raw material in Patent Document 2 is not within the category of the causative substances of endocrine disruption described above, In various storage stability of the printing unit and the printing unit, the quality performance does not reach the required performance as a developer of the heat-sensitive recording material.
- the present inventors have studied from the viewpoint of whether amino acids that are also foods can be used as developers of heat-sensitive recording materials. As a result, it was found that amino acids do not develop color even when they come into contact with basic dyes, because basic amino groups and acidic carboxyl groups coexist in the same molecule and neutralize in the molecule.
- the present inventors By introducing a functional group that contributes to the required performance and color developing ability of a heat-sensitive recording material as a protective group for the amino group of the amino acid, the present inventors have eliminated intramolecular neutralization, and In particular, the present inventors have completed the present invention using an N-substituted amino acid derivative derived from a natural amino acid as a developer.
- a heat-sensitive recording material provided with a heat-sensitive recording layer on a support, which contains a colorless or light-colored basic dye at room temperature and a color developer that can be brought into contact with the dye by heating,
- a heat-sensitive recording material, wherein the developer is at least one of N-substituted amino acid derivatives represented by the following general formula (1).
- RX represents a C6 to C10 aryl group, a C1 to C8 alkoxy group, or an alkyl group optionally having a substituent of an isocyanate group, or a C1 to C8 alkyl group, C7 to C8, C11 represents an aralkyl group, a C6 to C10 aryl group, a C1 to C8 alkoxy group, or an aryl group optionally having an isocyanate group substituent.
- X is a group attached to the N-terminus of Y, -OCO -, - SO 2 NHCO -, - NHCO -, - NHCS-, or -SO 2 - represent.
- Y represents an amino acid residue or a peptide residue
- an OH group of a serine residue, a threonine residue, an aspartic acid residue, a glutamic acid residue, or a tyrosine residue in the Y group is an OR group or an OR ′′ group.
- the SH group of the cysteine residue may be substituted with the SR group or the SR ′′ group
- the NH group of the histidine residue may be substituted with the NR group or the NR ′ group.
- the NH 2 group of the lysine residue or ornithine residue may be substituted with an NHR group or an NHR ′ group
- R ′ represents an amino protecting group
- R ′′ represents a carboxy protecting group.
- Z is a group bonded to the C terminus of Y and represents an OH group or an OR ′′ group.
- a plurality of R, R ′, and R ′′ may be the same or different, and may be bonded to each other to form a ring.
- the developer is N- (m-tolylaminocarbonyl) -phenylalanine, N- (m-tolylaminocarbonyl) -methionine, N- (p-tolylaminocarbonyl) -methionine, N- (phenylaminocarbonyl) ) -Methionine, N- (m-tolylaminocarbonyl) -valine, N- (m-tolylaminocarbonyl) -phenylglycine and N- (m-tolylaminocarbonyl) -tyrosine
- the thermosensitive recording material according to [1].
- thermosensitive recording layer 1,1,3-tris (2-methyl-4-hydroxy-5-tert-butylphenyl) butane, 1,1,3-tris (2-methyl) is used as a storage stabilizer.
- -4-hydroxy-5-cyclohexylphenyl) butane, 4,4′-bis [(4-methyl-3-phenoxycarbonylaminophenyl) ureido] diphenylsulfone, and diphenylsulfone bridge represented by the following general formula (2)
- the heat-sensitive recording material according to [1] or [2] which contains at least one selected from mold compounds.
- the derivative developer using the N-substituted amino acid as a raw material constituting the present invention satisfies the required performance of a heat-sensitive recording material equivalent to that of a conventional developer, and is a safe heat-sensitive substance having no endocrine disrupting action or the like. Recording materials can be provided.
- the heat-sensitive recording material according to the present embodiment is provided with a heat-sensitive recording layer containing a colorless or light-colored basic dye at room temperature and a color developer that can be colored by contact with the dye by heating on a support. It is a heat sensitive recording material.
- a heat-sensitive recording material comprises a heat-sensitive recording layer containing a colorless or light-colored basic dye at room temperature and a developer that can be colored by contact with the dye by heating.
- the developer is at least one of N-substituted amino acid derivatives represented by the following general formula (1).
- the heat-sensitive recording layer of the heat-sensitive recording material according to one embodiment of the present invention comprises the basic dye, the developer represented by the general formula, a binder, a sensitizer, a filler, a lubricant, and other various additives.
- the coating liquid obtained by adding the above is prepared, and this is coated on a support such as paper, plastic film, processed paper and the like.
- the developer is at least one of N-substituted amino acid derivatives represented by the following general formula (1).
- R is a C6 to C10 aryl group, a C1 to C8 alkoxy group, or an alkyl group optionally having a substituent of an isocyanate group, or a C1 to C8 alkyl group, C7 to C11
- alkyl group examples include methyl group, ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, sec-butyl group, pentyl group, isoamyl group, neopentyl group, 2-methylbutyl group, hexyl group, isohexyl group, 4- Examples thereof include a methylpentyl group.
- alkyl group (aralkyl group) optionally having a C6 to C10 aryl group examples include benzyl group, phenethyl group, o-tolylmethyl group, m-tolylmethyl group, p-tolylmethyl group, o-tolylethyl group, m- Examples thereof include a tolylethyl group and a p-tolylethyl group, and examples of the C7 to C11 aralkyl group include a benzyl group and a phenethyl group.
- aryl group examples include a phenyl group and a naphthyl group.
- the aryl group optionally having C1-C8 alkyl group, o-tolyl group, m-tolyl group, p-tolyl group, 1-ethylphenyl group, 2-ethylphenyl group, 3-ethylphenyl group, 1-propylphenyl group, 2-propylphenyl group, 3-propylphenyl group, 1-butylphenyl group, 2-butylphenyl group, 3-butylphenyl group, 1-pentylphenyl group, 2-pentylphenyl group, 3- Pentylphenyl group and the like, and as C6-C10 aryl group, phenyl group, o-tolyl group, m-tolyl group, p-tolyl group, 1-ethylphenyl group, 2-ethylphenyl group, 3-ethyl A phen
- Examples of the aryl group optionally having a substituent of a C7 to C11 aralkyl group or a C6 to C10 aryl group include a biphenyl group, a 3,3′-dimethylbiphenyl group, and a p-benzylbiphenyl group.
- Examples of the aryl group which may have a substituent of the C1-C8 alkoxy group include a 6-methoxyphenyl group.
- X is a group attached to the N-terminus of Y, -OCO -, - SO 2 NHCO -, - NHCO -, - NHCS-, or -SO 2 - represents a (sulfonyl group).
- Y represents an amino acid residue or a peptide residue
- an OH group of a serine residue, a threonine residue, an aspartic acid residue, a glutamic acid residue, or a tyrosine residue in the Y group is an OR group or an OR ′′ group.
- the SH group of the cysteine residue may be substituted with the SR group or the SR ′′ group
- the NH group of the histidine residue may be substituted with the NR group or the NR ′ group.
- the NH 2 group of the lysine residue or ornithine residue may be substituted with an NHR group or an NHR ′ group
- R ′ represents an amino protecting group
- R ′′ represents a carboxy protecting group.
- An amino protecting group (R ′ group) protecting the NH group of the histidine residue or the NH 2 group of the lysine residue or the ornithine residue in the Y group includes an RX group, in addition to an acyl group, An alkyl group is mentioned.
- Examples of the carboxy protecting group (R ′′ group) protecting the aspartic acid residue or glutamic acid residue in the Y group include an alkoxy group, an aryloxy group, an amino group, an alkylamino group, an arylamino group, and the like.
- Examples of the protecting group for the OH group of the serine residue, threonine residue, or tyrosine residue in the group, or the SH group of the cysteine residue include the carboxy protecting group (R ′′ group).
- Z is a group bonded to the C terminus of Y and represents an OH group or an OR ′′ group.
- a plurality of R, R ′, and R ′′ may be the same or different, and may be bonded to each other to form a ring.
- the N-substituted amino acid derivative represented by the above general formula can be easily produced from an amino acid or an amino acid derivative and a sulfonate compound or an isocyanate compound by applying a known method such as the Schotten-Baumann reaction.
- the amino acids, peptides, and esters and amides used as components of the compound represented by the general formula may be L-form, D-form or DL-form. It may be a natural amino acid, an unnatural amino acid, an ⁇ -amino acid, or ⁇ -.
- Esters are C1-C4 alkyl esters, aryl esters, aralkyl esters, and amides are amides, alkyl-substituted amides, aryl-substituted amides, and the like.
- ester derivatives such as glycine, glycine methyl ester, glycine ethyl ester, glycine-t-butyl ester, glycine phenyl ester, glycine p-cresyl ester, glycine m-cresyl ester, glycine benzyl ester, glycine amide, N Amide derivatives such as' -methylglycinamide, glycylanilide, ester derivatives such as phenylglycine, phenylglycine methyl ester, phenylglycine ethyl ester, phenylglycine benzyl ester, phenylglycinamide, alanine, alanine methyl ester, alanine ethyl ester, Ester derivatives such as alanine benzyl ester, alaninamide, naphth
- amino acids such as homoserine, homocysteine, norleucine and derivatives thereof may be used.
- C1-C8 aminocarboxylic acids such as ⁇ -alanine, 5-aminovaleric acid and 7-aminoheptanoic acid are also selected.
- Peptides are glycylglycine, glycylglycine methyl ester, glycylglycinamide, glycylalanine, glycylalanine methyl ester, glycylvaline, glycylleucine, glycylphenylalanine, glycylphenylalanine methyl ester, glycylphenylalaninamide, glycyl Examples include proline, alanylalanine, alanylproline, alanylmethionine, alanylmethionine methyl ester, alanylphenylalanine, glycylglycylglycine and the like.
- the compound represented by the above general formula is an amino group-protected amino acid, peptide or derivative thereof, and the protecting group is used in many fields in amino acid chemistry or peptide synthesis chemistry.
- sulfonylamino Group As the functional group (—XNH— group) formed by the N-substituent of the N-substituted amino acid derivative represented by the general formula (1) in the thermosensitive recording material according to one embodiment of the present invention, sulfonylamino Group, urethane group, (thio) urea group (ureido), and sulfonylurea group.
- These functional groups are, for example, sulfonylamino groups derived from alkanesulfonyl chloride or arylsulfonyl chloride.
- the urethane group is derived from chloroformate such as chloroformic acid-t-butyl ester and benzyl chloroformate, or carbonate such as dimethyl carbonate.
- (Thio) urea groups are derived from iso (thio) cyanate esters such as phenyl iso (thio) cyanate.
- the sulfonylurea is derived from a sulfonylurea such as toluenesulfonyl isocyanate.
- the compound (X1) that forms a sulfonylamino group includes methanesulfonyl chloride, ethanesulfonyl chloride, propanesulfonyl chloride, butanesulfonyl chloride, benzenesulfonyl chloride, p-toluenesulfonyl chloride, m-toluenesulfonyl chloride, O-toluenesulfonyl chloride, p-methoxybenzenesulfonyl chloride, p-xylenesulfonyl chloride, m-xylenesulfonyl chloride, mesitylenesulfonyl chloride, 1-naphthalenesulfonyl chloride, 2-naphthalenesulfonyl chloride, bromide, iodide, etc. Can be given.
- Examples of the compound (X2) forming a urethane group include chloroformic acid methyl ester, chloroformic acid ethyl ester, chloroformic acid-t-butyl ester, chloroformic acid benzyl ester, halogenated formic acid ester such as chloroformic acid phenyl ester, dimethyl carbonate, carbonic acid Examples thereof include carbonates such as diethyl, diphenyl carbonate and dibenzyl carbonate.
- Examples of the compound (X4) that forms a sulfonylurea group include benzenesulfonyl isocyanate and p-toluenesulfonyl isocyanate.
- N-substituted amino acid derivative obtained by using the compound (X1) that forms a sulfonylamino group in the general formula (1) examples include N-methanesulfonyl-glycine, N-methanesulfonyl-glycine benzyl ester, N-methanesulfonyl-glycinamide, N-methanesulfonyl-valine, N-methanesulfonyl-phenylalanine, N-methanesulfonyl-phenylalanine methyl ester, N-methanesulfonyl-phenylalanine benzyl ester, N-methanesulfonyl- ⁇ -alanine, N N-C1-C8 alkanes such as methanesulfonyl- ⁇ -alanine methyl ester, N-ethanesulfonyl-leucine, N-propanesulfonyl-
- N-substituted amino acid derivatives obtained by using the compound (X3) which forms a urea group in the general formula (1) include N-phenylaminocarbonyl-glycine, N-phenylaminocarbonyl-glycine-methyl, and the like.
- N-substituted amino acid derivatives obtained by using the compound (X3) that forms a thiourea group in the general formula (1) include N-phenylaminothiocarbonyl-phenylalanine, N-phenylaminothiocarbonyl- Phenylalanine-methyl ester, N-phenylaminothiocarbonyl-valine-isopropyl ester, N-phenylaminothiocarbonyl-tyrosine-methyl ester, N-phenylaminothiocarbonyl-methionine-methyl ester, N-phenylaminothiocarbonyl-glycyl Glycine, N-phenylaminothiocarbonyl-glycylalanine, Nm-tolylaminothiocarbonyl-phenylalanine, Nm-tolylaminothiocarbonyl-phenylalanine-benzyl ester, Nm-tolylua Nothiocarbonyl-phenyla
- N-substituted amino acid derivatives obtained by using the compound (X2) that forms a urethane group in the general formula (1) include N-benzyloxycarbonyl-glycine, N-benzyloxycarbonyl-phenylglycine, N-benzyloxycarbonyl-valine, N-benzyloxycarbonyl-methionine, N-benzyloxycarbonyl-tyrosine, N-benzyloxycarbonyl-hydroxyproline, N-benzyloxycarbonyl-arginine, N-benzyloxycarbonyl-glycine, N -T-butoxycarbonyl-proline, Nt-butoxycarbonyl-glycine, Nt-butoxycarbonyl-phenylalanine, Nt-butoxycarbonyl-tryptophan, Nt-butoxycarbonyl-tyrosine, Nt- Butoxycarbonyl - glutamic acid.
- Examples of the N-substituted amino acid derivative obtained by using the compound (X4) that forms a sulfonylurea group in the general formula (1) include N- (p-toluenesulfonylaminocarbonyl) -glycine, N- ( p-toluenesulfonylaminocarbonyl) -phenylalanine, N- (p-toluenesulfonylaminocarbonyl) -phenylalanine-methyl ester, N- (p-toluenesulfonylaminocarbonyl) -phenylalanine-ethyl ester, N- (p-toluenesulfonylamino) Carbonyl) -phenylalaninamide, N- (p-toluenesulfonylaminocarbonyl) - ⁇ -alanine, N- (p-toluenesulfonylaminocarbonyl
- the N-substituted amino acid derivative obtained using a diisocyanate compound such as 3,3′-dimethyldiphenylmethane may have an isocyanate group as the R group, and includes a serine residue, a threonine residue in the Y group, Aspartic acid residue, glutamic acid residue, or ty
- amino protecting group (R ′ group) for protecting the NH 2 group examples include RX group, and in addition, acyl group and alkyl group can be mentioned.
- These amino protecting groups (R ′ groups) can be introduced by a known method.
- acyl groups can be introduced using acid anhydrides.
- the alkyl group can be introduced by an alkyl halide such as trityl chloride in the presence of an amine or the like.
- the carboxy protecting group (R) protecting the aspartic acid residue or glutamic acid residue in the Y group of the N-substituted amino acid derivative represented by the general formula (1) in the thermosensitive recording material according to one embodiment of the present invention includes an alkoxy group, an aryloxy group, an amino group, an alkylamino group, an arylamino group, etc.
- an OH group of a serine residue, a threonine residue, or a tyrosine residue in the Y group, or Examples of the protecting group for the SH group of the cysteine residue include the carboxy protecting group (R ′′ group).
- These carboxy protecting groups (R ′′ groups) can be introduced by a known method.
- N-substituted amino acid derivatives as color developers in the heat-sensitive recording material include N- (p-toluenesulfonyl) -glycine, N- (p-toluenesulfonyl) -alanine, N- N-allylsulfonyl-amino acids such as (p-toluenesulfonyl) - ⁇ -alanine, N-phenylaminocarbonyl-glycine, N-phenylaminocarbonyl-valine, N- (m-tolylaminocarbonyl) -phenylalanine, N- ( m-tolylaminocarbonyl) -cysteine-S-benzyl, N- (m-tolylaminocarbonyl) -methionine, N- (m-tolylaminocarbonyl) -tyrosine, N- (p-tolylaminocarbonyl)
- Z is preferably an OH group
- X is preferably an —NHCO— group.
- the N-substituted amino acid derivative is N- (m-tolylaminocarbonyl) -phenylalanine, N- ( m-tolylaminocarbonyl) -methionine, N- (p-tolylaminocarbonyl) -methionine, N- (phenylaminocarbonyl) -methionine, N- (m-tolylaminocarbonyl) -valine, N- (m-tolylamino) It is preferable to use at least one selected from the group consisting of (carbonyl) -phenylglycine and N- (m-tolylaminocarbonyl) -tyrosine.
- the thermal recording material according to one embodiment of the present invention may be used in combination with an existing developer as long as the effects of the present invention are not impaired.
- triphenylmethane-based, fluoran-based, diphenylmethane-based, spiro-based, fluorene-based, and thiazine-based compounds are exemplified as colorless to light-colored basic dyes at room temperature. You can choose from leuco dyes.
- a conventionally known sensitizer can be used in combination as a sensitizer.
- fatty acid amides such as stearic acid amide, bis stearic acid amide and palmitic acid amide, p-toluenesulfonamide, stearic acid, calcium such as behenic acid and palmitic acid, fatty acid metal salts such as zinc or aluminum, p-benzylbiphenyl , Diphenylsulfone, benzyloxybenzyl benzoate, 2-benzyloxynaphthalene, 1,2-bis (p-tolyloxy) ethane, 1,2-bis (phenoxy) ethane, 1,2-bis (3-methylphenoxy) ethane 1,3-bis (phenoxy) propane, dibenzyl oxalate, p-methylbenzyl oxalate, m-terphenyl, 1-hydroxy-2-naphthoic acid
- a conventionally known storage stabilizer can be used in combination.
- the content of the storage stabilizer is preferably 2.5 to 100 parts by mass, more preferably 5 to 50 parts by mass with respect to 100 parts by mass of the developer.
- auxiliary agent examples include, for example, sodium dioctiolsuccinate, sodium dodecylbenzenesulfonate, sodium lauryl alcohol sulfate, fatty acid metal salt, zinc stearate, calcium stearate, polyethylene wax, carnauba wax, paraffin wax, Waxes such as ester wax, hydrazide compounds such as adipic acid dihydrazide, water resistant agents such as glyoxal, boric acid, dialdehyde starch, methylol urea, glyoxylate, epoxy compounds, antifoaming agents, colored dyes, fluorescent dyes, And pigments.
- the binder used in the heat-sensitive recording layer includes fully saponified polyvinyl alcohol having a polymerization degree of 200 to 1900, partially saponified polyvinyl alcohol, carboxy-modified polyvinyl alcohol, and diacetone-modified.
- Polyvinyl alcohol acetoacetyl-modified polyvinyl alcohol, amide-modified polyvinyl alcohol, sulfonic acid-modified polyvinyl alcohol, butyral-modified polyvinyl alcohol, hydroxyethyl cellulose, methyl cellulose, carboxymethyl cellulose, styrene-maleic anhydride copolymer, styrene-butadiene copolymer and ethyl cellulose , Cellulose derivatives such as acetylcellulose, polyvinyl acetate, polyacrylamide, polyacrylate, Le butyral polystyrene and copolymers thereof, polyamide resins, silicone resins, petroleum resins, terpene resins, ketone resins, such as chroman resins. These binders can be used singly or in combination of two or more, and can be used by being dissolved in a solvent, or in a state of being emulsified or pasted in water or another medium.
- pigments to be blended in the heat-sensitive recording layer include silica, calcium carbonate, kaolin, calcined kaolin, diatomaceous earth, talc, titanium oxide, zinc oxide, aluminum hydroxide, polystyrene resin, urea-formalin resin, styrene-methacrylic acid copolymer Inorganic or organic pigments such as polymers, styrene-butadiene copolymers and hollow plastic pigments.
- the types and amounts of basic dyes, developers, sensitizers, binders, pigments and other additives used in the heat-sensitive recording layer are as follows. It is determined appropriately according to the quality performance required for the layer.
- the content of the N-substituted amino acid derivative represented by the general formula (1) as the developer is the heat-sensitive recording from the viewpoint of color density.
- the amount is preferably 0.3 to 5 parts by mass, and more preferably 0.4 to 3 parts by mass with respect to 1 part by mass of the basic dye in the layer.
- the sensitizer is 0.2 to 4 parts by mass with respect to 1 part of the leuco dye, and the binder is 5 to 50% by mass in the total solid content.
- the support paper, recycled paper, synthetic paper, plastic film, nonwoven fabric, metal foil or the like can be used. A composite sheet combining these can also be used.
- an overcoat layer made of a polymer material containing an organic pigment may be provided for the purpose of enhancing storage stability.
- an undercoat layer containing an organic pigment, an inorganic pigment, hollow fine particles, or the like may be provided for the purpose of preventing wrinkle adhesion to the thermal head, improving the printing image quality, and improving the sensitivity.
- the basic dye, the developer, the sensitizer, and, if necessary, the storage stabilizer used in the heat-sensitive recording layer in the heat-sensitive recording material according to one embodiment of the present invention may be, for example, a ball mill, an atomizer using water as a dispersion medium. It is finely dispersed and used so as to have an average particle size of 2 ⁇ m or less by a stirring pulverizer such as a lighter or a sand mill.
- the heat-sensitive recording layer coating material is prepared by mixing and stirring pigments, binders, auxiliaries, and the like as necessary in the finely dispersed dispersion.
- the heat-sensitive recording layer paint thus obtained is applied onto a support so that the coating amount after drying is about 1.5 to 12 g / m 2 , more preferably about 3 to 7 g / m 2. It is formed by drying.
- Synthesis Example 2 N- (m-Tolylaminocarbonyl) -methionine White crystals were obtained in the same manner as in Synthesis Example 1, except that 14.9 g of L-methionine was used instead of 16.5 g of L-phenylalanine in Synthesis Example 1. N- (m-tolylaminocarbonyl) -methionine was obtained. The melting point was 142 ° C.
- Synthesis Example 3 N- (m-Tolylaminocarbonyl) -valine White crystals were prepared in the same manner as in Synthesis Example 1 except that 11.7 g of L-valine was used instead of 16.5 g of L-phenylalanine of Synthesis Example 1. N- (m-tolylaminocarbonyl) -valine was obtained. The melting point was 169 ° C.
- Synthesis Example 4 N- (m-tolylaminocarbonyl) -cysteine-S-benzyl Synthesis Example 1 except that 21.1 g of L-cysteine-S-benzyl was used instead of 16.5 g of L-phenylalanine of Synthesis Example 1. By the same operation, white crystals of N- (m-tolylaminocarbonyl) -cysteine-S-benzyl were obtained. The melting point was 164 ° C.
- Synthesis Example 5 N- (m-tolylaminocarbonyl) -tyrosine
- Synthesis Example 5 N- (m-tolylaminocarbonyl) -tyrosine
- Synthesis Example 6 N-phenylaminothiocarbonyl-glycylglycine
- 13.2 g of glycylglycine, 50 g of water and 50 g of THF were charged, and 50 g of 8% sodium hydroxide aqueous solution was added to dissolve glycylglycine. .
- 13.5 g of phenyl isothiocyanate was added dropwise and stirred for 5 hours.
- the same reaction treatment as in Synthesis Example 1 was performed to obtain white crystalline N-phenylaminothiocarbonyl-glycylglycine. The melting point was 157 ° C.
- thermosensitive recording material was prepared by the following operation.
- Example 1 [Creation of thermal recording paint] Liquid A (Preparation of dye dispersion) 3- (N, N-dibutylamino) -6-methyl-7-anilinofluorane 10 parts 10% aqueous polyvinyl alcohol solution 10 parts water 16.7 parts
- Liquid B Preparation of developer dispersion
- N- (m-Tolylaminocarbonyl) -phenylalanine (Developer 1) 20 parts 10% aqueous polyvinyl alcohol solution
- Liquid C Preparation of sensitizer dispersion
- 1,2-bis (m-tolyloxy) ethane 15 parts 10% aqueous polyvinyl alcohol solution 15 parts water 25 parts
- the dispersion liquids of the liquid A, liquid B and liquid C were pulverized with a sand grinder until the average particle size became 1 ⁇ m or less, and the dispersion liquid was mixed at the following ratio to obtain a coating liquid.
- Liquid A die agent dispersion
- Liquid B developer dispersion
- Liquid C sensitizer dispersion
- the undercoat paint was applied to a fine paper (acidic paper) having a basis weight of 53 g as a support and dried so that the mass per area after drying was 6 g / m 2, and then the area after the heat-sensitive paint was dried The coating was dried so that the weight per hit was 3.5 g / m 2 .
- This sheet was processed with a super calender so that the smoothness (JISP8155: 2010) was 900 to 1200 s to prepare a heat-sensitive recording material.
- Thermal recording test color development test
- the produced thermal recording material was applied with an applied energy of 0.38 mJ / dot using a thermal recording paper printing tester (TH-PMD manufactured by Okura Electric Co., Ltd.).
- the print density of the recording part was measured with a Macbeth reflection densitometer RD-914.
- Humidity resistance test After recording the thermal recording material recorded in the thermal recording test in an environment of a test temperature of 40 ° C. and 90% RH for 24 hours, the printed portion image density of the test piece and the density of the unprinted portion are measured with a Macbeth reflection densitometer. It was measured.
- Oil resistance test The sample was immersed in the heat sensitive recording material recorded in the heat sensitive recording test for 1 minute in salad oil, and then the oil of the test piece was wiped off, and the image density was measured with a Macbeth reflection densitometer.
- thermosensitive recording material according to this example.
- Example 2 Same as Example 1 except that N- (m-tolylaminocarbonyl) -phenylalanine (Developer 1) in Liquid B of Example 1 is replaced with N- (p-toluenesulfonyl) -phenylalanine (Developer 2). was performed.
- Various test results of the heat-sensitive recording material according to this example are as shown in Table 1.
- Example 3 The same as in Example 1 except that N- (m-tolylaminocarbonyl) -phenylalanine (Developer 1) in Liquid B of Example 1 was replaced with N- (benzyloxycarbonyl) -valine (Developer 3). The operation was performed.
- Various test results of the heat-sensitive recording material according to this example are as shown in Table 1.
- Example 4 Example 1 except that N- (m-tolylaminocarbonyl) -phenylalanine (developer 1) in solution B of Example 1 was replaced with N- (m-tolylaminocarbonyl) -methionine (developer 4). The same operation was performed.
- Various test results of the heat-sensitive recording material according to this example are as shown in Table 1.
- Example 5 Same as Example 1 except that N- (m-tolylaminocarbonyl) -phenylalanine (developer 1) in B of Example 1 is replaced with N- (m-tolylaminocarbonyl) -tyrosine (developer 5).
- Various test results of the heat-sensitive recording material according to this example are as shown in Table 1.
- Example 6 Example 1 except that N- (m-tolylaminocarbonyl) -phenylalanine (developer 1) in solution B of Example 1 was replaced with N- (m-tolylaminocarbonyl) -phenylglycine (developer 6). The same operation was performed.
- Various test results of the heat-sensitive recording material according to this example are as shown in Table 1.
- Example 7 Example 1 except that N- (m-tolylaminocarbonyl) -phenylalanine (developer 1) in solution B of Example 1 was replaced with N- (m-tolylaminocarbonyl) -valine (developer 7). The same operation was performed.
- Various test results of the heat-sensitive recording material according to this example are as shown in Table 1.
- Example 8 Except for replacing N- (m-tolylaminocarbonyl) -phenylalanine (developer 1) in solution B of Example 1 with N- (m-tolylaminocarbonyl) -cysteine-S-benzyl (developer 8). The same operation as in Example 1 was performed.
- Various test results of the heat-sensitive recording material according to this example are as shown in Table 1.
- Example 9 Example except that N- (m-tolylaminocarbonyl) -phenylalanine (developer 1) in solution B of Example 1 was replaced with N- (m-tolylaminocarbonyl) - ⁇ -alanine (developer 9) The same operation as 1 was performed.
- Various test results of the heat-sensitive recording material according to this example are as shown in Table 1.
- Example 10 The same as Example 1 except that N- (m-tolylaminocarbonyl) -phenylalanine (Developer 1) in Liquid B of Example 1 was replaced with N-phenylaminothiocarbonylglycylglycine (Developer 10). The operation was performed.
- Various test results of the heat-sensitive recording material according to this example are as shown in Table 1.
- Example 11 Except that N- (m-tolylaminocarbonyl) -phenylalanine (developer 1) in solution B of Example 1 was replaced with N- (p-toluenesulfonylaminocarbonyl) -phenylalanine-methyl ester (developer 11). The same operation as in Example 1 was performed.
- Various test results of the heat-sensitive recording material according to this example are as shown in Table 1.
- Example 12 Example 1 except that N- (m-tolylaminocarbonyl) -phenylalanine (developer 1) in solution B of Example 1 was replaced with N- (p-toluenesulfonyl) - ⁇ -alanine (developer 12). The same operation was performed.
- Various test results of the heat-sensitive recording material according to this example are as shown in Table 1.
- Example 13 Example 1 except that N- (m-tolylaminocarbonyl) -phenylalanine (developer 1) in solution B of Example 1 was replaced with N- (p-tolylaminocarbonyl) -methionine (developer 13). The same operation was performed.
- Various test results of the heat-sensitive recording material according to this example are as shown in Table 1.
- Example 14 The same as Example 1 except that N- (m-tolylaminocarbonyl) -phenylalanine (Developer 1) in Liquid B of Example 1 was replaced with N- (Phenylaminocarbonyl) -methionine (Developer 14). The operation was performed.
- Various test results of the heat-sensitive recording material according to this example are as shown in Table 1.
- Example 1 The same operation as in Example 1 was carried out except that N- (m-tolylaminocarbonyl) -phenylalanine (Developer 1) in Liquid B of Example 1 was replaced with N-acetyl-phenylalanine (Developer 15). .
- Various test results of the heat-sensitive recording material according to this comparative example are shown in Table 1.
- Example 2 The same operation as in Example 1 was performed except that N- (m-tolylaminocarbonyl) -phenylalanine (Developer 1) in Liquid B of Example 1 was replaced with N-benzoyl-valine (Developer 16). .
- Various test results of the heat-sensitive recording material according to this comparative example are shown in Table 1.
- Example 3 The same operation as in Example 1 was conducted except that N- (m-tolylaminocarbonyl) -phenylalanine (Developer 1) in Liquid B of Example 1 was replaced with N-benzoyl- ⁇ -alanine (Developer 17). I did it.
- Various test results of the heat-sensitive recording material according to this comparative example are shown in Table 1.
- Example 1 The same operation as in Example 1 was performed except that N- (m-tolylaminocarbonyl) -phenylalanine (Developer 1) in Liquid B of Example 1 was replaced with bisphenol A (Developer 18).
- Various test results of the heat-sensitive recording material according to this reference example were as shown in Table 1.
- the heat-sensitive recording material prepared from the amino acid derivative exhibits a good color density at a high whiteness
- Z is an OH group
- X is —NHCO—
- N-substituted amino acid derivatives are N- (m-tolylaminocarbonyl) -phenylalanine, N- (m-tolylaminocarbonyl) -methionine, N- (m-tolylaminocarbonyl) -valine, N- (m-tolylaminocarbonyl) ) -Phenylglycine and N- (m-tolylaminocarbonyl) -tyrosine had good heat resistance, moisture resistance and oil resistance storage stability in the printed and unprinted areas.
- Liquid B (Preparation of developer dispersion) N- (m-Tolylaminocarbonyl) -methionine (developer 4) 20 parts 10% aqueous polyvinyl alcohol solution 20 parts water 33.3 parts
- Liquid C Preparation of sensitizer dispersion
- 1,2-bis (m-tolyloxy) ethane 15 parts 10% aqueous polyvinyl alcohol solution 15 parts water 25 parts
- Solution D Preparation of storage stabilizer solution
- the dispersion liquids of the liquid A, liquid B, liquid C and liquid D were pulverized with a sand grinder until the average particle size became 1 ⁇ m or less, and the dispersion liquid was mixed at the following ratio to obtain a coating liquid.
- Liquid A die agent dispersion
- Liquid B developer dispersion
- Liquid C sensitizer dispersion
- Liquid D storage stabilizer liquid
- the undercoat paint was applied to a fine paper (acidic paper) having a basis weight of 53 g as a support and dried so that the mass per area after drying was 6 g / m 2, and then the area after the heat-sensitive paint was dried The coating was dried so that the weight per hit was 3.5 g / m 2 .
- This sheet was processed with a super calender so that the smoothness (JISP8155: 2010) was 900 to 1200 s to prepare a heat-sensitive recording material.
- Plasticizer resistance test A wrap film (trade name: High Wrap KMA, manufactured by Mitsui Chemicals) is wrapped around a polycarbonate pipe (48mm ⁇ ), and the thermal recording paper recorded in the thermal recording test is placed on it. Wrapped in a triple layer and allowed to stand in an environment of 20 ° C. and 65% RH for 24 hours, the image density and the unprinted area were then measured with a Macbeth reflection densitometer.
- Example 16 Example 15 except that N- (m-tolylaminocarbonyl) -methionine (developer 4) in solution B of Example 15 was replaced with N- (m-tolylaminocarbonyl) -phenylalanine (developer 1). The same operation was performed.
- Various test results of the heat-sensitive recording material according to this example are shown in Table 2.
- Example 17 The same procedure as in Example 15 except that N- (m-tolylaminocarbonyl) -methionine (developer 4) in Liquid B of Example 15 was replaced with N- (phenylaminocarbonyl) -methionine (developer 14). The operation was performed.
- Various test results of the heat-sensitive recording material according to this example are shown in Table 2.
- Example 15 except that N- (m-tolylaminocarbonyl) -methionine (developer 4) in solution B of Example 15 was replaced with N- (p-tolylaminocarbonyl) -methionine (developer 13). The same operation was performed.
- Various test results of the heat-sensitive recording material according to this example are shown in Table 2.
- Example 15 is the same as Example 15 except that N- (m-tolylaminocarbonyl) -methionine (developer 4) in Liquid B of Example 15 is replaced with N- (m-tolylaminocarbonyl) -valine (developer 7). The same operation was performed.
- Various test results of the heat-sensitive recording material according to this example are shown in Table 2.
- Example 15 except that N- (m-tolylaminocarbonyl) -methionine (developer 4) in solution B of Example 15 was replaced with N- (m-tolylaminocarbonyl) -phenylglycine (developer 6). The same operation was performed.
- Various test results of the heat-sensitive recording material according to this example are shown in Table 2.
- Example 15 is the same as Example 15 except that N- (m-tolylaminocarbonyl) -methionine (developer 4) in solution B of Example 15 is replaced with N- (m-tolylaminocarbonyl) -tyrosine (developer 5). The same operation was performed.
- Various test results of the heat-sensitive recording material according to this example are shown in Table 2.
- Example 22 1,1,3-tris (2-methyl-4-hydroxy-5-cyclohexylphenyl) butane in the liquid D of Example 15 was converted to 1,1,3-tris (2-methyl-4-hydroxy-5-tert- The same operation as in Example 15 was carried out except that butylphenyl) butane was used.
- Table 2 Various test results of the heat-sensitive recording material according to this example are shown in Table 2.
- Example 23 Liquid D of Example 1, 1,1,3-tris (2-methyl-4-hydroxy-5-cyclohexylphenyl) butane was converted to a diphenylsulfone bridged compound (Nippon Soda Co., Ltd .: trade name: D-90, formula ( The same operation as in Example 15 was carried out except that 1) was replaced with a mixture of compounds of 1 to 6).
- Table 2 Various test results of the heat-sensitive recording material according to this example are shown in Table 2.
- Example 24 The 1,1,3-tris (2-methyl-4-hydroxy-5-cyclohexylphenyl) butane in liquid D of Example 1 was converted to 4,4′-bis [(4-methyl-3-phenoxycarbonylaminophenyl) ureido. The same operation as in Example 15 was performed except that phenylsulfone was used.
- Table 2 Various test results of the heat-sensitive recording material according to this example are shown in Table 2.
- Example 25 The same operation as in Example 15 was carried out except that 1,1,3-tris (2-methyl-4-hydroxy-5-cyclohexylphenyl) butane in Liquid D of Example 1 was replaced with 9.165 parts.
- Table 2 Various test results of the heat-sensitive recording material according to this example are shown in Table 2.
- Example 26 The same operation as in Example 15 was performed, except that 36,67 parts of 1,1,3-tris (2-methyl-4-hydroxy-5-cyclohexylphenyl) butane in Liquid D of Example 1 was replaced.
- Table 2 Various test results of the heat-sensitive recording material according to this example are shown in Table 2.
- Example 27 The same operation as in Example 15 was carried out except that 1,1,3-tris (2-methyl-4-hydroxy-5-cyclohexylphenyl) butane in Liquid D of Example 1 was replaced with 73.34 parts.
- Table 3 Various test results of the heat-sensitive recording material according to this example are shown in Table 3.
- Example 28 1,1,3-tris (2-methyl-4-hydroxy-5-cyclohexylphenyl) butane in liquid D of Example 15 was converted to 1,1,3-tris (2-methyl-4-hydroxy-5-cyclohexylphenyl).
- Example 15 The same operation as in Example 15 was performed except that the mixing ratio of butane and diphenylsulfone cross-linking compound was changed to 1: 1.
- Table 3 Various test results of the heat-sensitive recording material according to this example are shown in Table 3.
- Reference Example 1 is the same as Example 15 except that N- (m-tolylaminocarbonyl) -methionine in Liquid B of Example 15 is replaced with bisphenol A (developer 18).
- Various test results of the heat-sensitive recording material according to Reference Example 1 were as shown in Table 3.
- Reference Example 2 is the same as Example 15 except that N- (m-tolylaminocarbonyl) -methionine (Developer 4) in Liquid B of Example 15 was replaced with 4,4′bisphenol S (Developer 19). It is the same.
- Various test results of the heat-sensitive recording material according to Reference Example 2 were as shown in Table 3.
- Example 29 N- (m-tolylaminocarbonyl) -phenylalanine (Developer 1) in Liquid B of Example 1 was converted to N- (3-isopropenyl- ⁇ , ⁇ -dimethylbenzyl) aminocarbonyl-methionine (Developer 20). The same operation as Example 1 was performed except having replaced with.
- Table 4 Various test results of the heat-sensitive recording material according to this example are shown in Table 4.
- the heat-sensitive recording material prepared from the amino acid derivative exhibits a good color density at a high whiteness, particularly Z is an OH group, and X is —NHCO—.
- the printing section has good storage stability such as heat resistance, moisture resistance, and oil resistance, and by adding a specific storage stabilizer, it is possible to produce a heat-sensitive recording material with excellent printing section water resistance. Can.
- the developer used is a natural amino acid as a main raw material, there is no concern about endocrine disruption, excellent color density, high whiteness in non-printed areas, and printing. Therefore, the industrial applicability is very promising as an alternative to the conventional heat-sensitive recording material.
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Abstract
Description
本願は、2015年9月18日に日本に出願された特願2015-185024号、2016年3月3日に日本に出願された特願2016-041569号、及び、2016年7月15日に日本に出願された特願2016-140814号に基づき優先権を主張し、その内容をここに援用する。
印字部の保存安定性とは、印字画像が高湿度の環境下に置かれた場合、水が付着した場合、油類が付着した場合又は可塑剤が付着した場合等にも消失しない性能を意味する。
この為、上記の要求性能を満足する顕色剤として、フェノール系化合物、スルホニル尿素化合物など石油化学由来の合成化合物が提案されてきた。その中でもフェノール系化合物が数多く開発され、実用化されている。
[1] 常温で無色ないし淡色の塩基性染料と、加熱により該染料と接触して呈色し得る顕色剤とを含有する感熱記録層を支持体上に設けた感熱記録材料であって、前記顕色剤が下記一般式(1)で表されるN-置換アミノ酸誘導体の少なくとも一種である感熱記録材料。
(式(1)中、RはC6~C10のアリール基、C1~C8のアルコキシ基、若しくはイソシアネート基の置換基を有していてもよいアルキル基、又は、C1~C8のアルキル基、C7~C11のアラルキル基、C6~C10のアリール基、C1~C8のアルコキシ基、若しくはイソシアネート基の置換基を有していてもよいアリール基を表す。
複数のR、R’、R”は同じであっても、異なっていてもよく、互いに結合して環を形成していてもよい。
(R-X)m-Y-(Z)m ・・・(1)
複数のR、R’、R”は同じであっても、異なっていてもよく、互いに結合して環を形成していてもよい。
Yが、シスチン残基以外のアミノ酸残基であるとき又はシスチン残基を有さないペプチド残基であるときm=1であり、シスチン残基をn個有するペプチド残基であるときm=n+1であり、nは1又は2である。
本発明の一の実施形態に係る感熱記録材料における前記一般式(1)で表されるN-置換アミノ酸誘導体の、Y基中のアスパラギン酸残基又はグルタミン酸残基を保護するカルボキシ保護基(R”基)として、アルコキシ基、アリールオキシ基、アミノ基、アルキルアミノ基、アリールアミノ基などが挙げられる。また、Y基中のセリン残基、スレオニン残基、若しくはチロシン残基のOH基、又はシステイン残基のSH基の保護基として、前記カルボキシ保護基(R”基)が挙げられる。これらのカルボキシ保護基(R”基)は、公知の方法により導入することができる。
これらN-置換アミノ酸誘導体の1種あるいは2種以上を併用して用いても良い。
3-(4-ジエチルアミノ-2-エトキシフェニル)-3-(1-エチル-2-メチルインドール-3-イル)-4-アザフタリド、
3,3-ビス(P-メチルアミノフェニル)-6-ジメチルアミノフタリド、
3-ジエチルアミノ-7-ジベンジルアミノベンゾ[α]フルオラン、
3-(1-エチル-2-メチルインドール-3-イル)-3-(4-ジエチルアミノ-2-n-ヘキシルオキシフェニル)-4-アザフタリド、3-(1-エチル-2-メチルインドール-3-イル)-3-(4-ジエチルアミノ)-2-メチルフェニル-4-アザフタリド、3-(4-ジエチルアミノフェニル)-3-(1-エチル-2-メチルインドール-3-イル)フタリド、3-(2-メチル-1-n-オクチルインドール-3-イル)-3-(4-ジエチルアミノ-2-エトキシフェニル)-4-アザフタリド、3-(N-エチル-N-イソペンチルアミノ)-6-メチル-7-アニリノフルオラン、3-ジエチルアミノ-6-メチル-7-アニリノフルオラン、3-ジエチルアミノ-6-メチル-7-(o,p-ジメチルアニリノ)フルオラン、
例えば、ステアリン酸アミド、ビスステアリン酸アミド、パルミチン酸アミドなどの脂肪酸アミド、p-トルエンスルホンアミド、ステアリン酸、ベヘン酸やパルミチン酸などのカルシウム、亜鉛あるいはアルミニウムなどの脂肪酸金属塩、p-ベンジルビフェニル、ジフェニルスルホン、ベンジルオキシ安息香酸ベンジル、2-ベンジルオキシナフタレン、1,2-ビス(p-トリルオキシ)エタン、1,2-ビス(フェノキシ)エタン、1,2-ビス(3-メチルフェノキシ)エタン、1,3-ビス(フェノキシ)プロパン、シュウ酸ジベンジル、シュウ酸p-メチルベンジル、m-ターフェニル、1-ヒドロキシ-2-ナフトエ酸などが挙げられる。
例えば、2,2’-メチレンビス(4-メチル-6-tert-ブチルフェノール)、2,2’-メチレンビス(4-エチル-6-tert-ブチルフェノール)、2,2’-エチリデンビス(4,6-ジ-tert-ブチルフェノール)、4,4’-チオビス(2-メチル-6-tert-ブチルフェノール)、4,4’-ブチリデンビス(6-tert-ブチルm-クレゾール)、1,1,3-トリス(2-メチル-4-ヒドロキシ-5-tert-ブチルフェニル)ブタン、1,1,3-トリス(2-メチル-4-ヒドロキシ-5-シクロヘキシルフェニル)ブタン、4,4’-ビス[(4-メチル-3-フェノキシカルボニルアミノフェニル)ウレイド]ジフェニルスルホン、トリス(2,6-ジメチル-4-tert-ブチル-3-ヒドロキシベンジル)イソシアヌレート、4,4’-チオビス(3-メチルフェノール)、4,4’-ジヒドロキシ-3,3’,5,5’-テトラブロモジフェニルスルホン、4,4’-ジヒドロキシ3,3’,5,5’-テトラメチルジフェニルスルホン、2,2-ビス(4-ヒドロキシ-3,5-ジブロモフェニル)プロパン、2,2-ビス(4-ヒドロキシ-3,5-ジクロロフェニル)プロパン、2,2-ビス(4-ヒドロキシ-3,5-ジメチルフェニル)プロパン等のヒンダードフェノール化合物、
このように微分散された分散液に、必要により顔料、バインダー、助剤等を混合撹拌することで感熱記録層塗料を調整される。
このようにして得られた感熱記録層塗料を、乾燥後の塗布量が1.5~12g/m2程度、より好ましくは3~7g/m2程度になるように、支持体上に塗布し、乾燥することで形成される。
合成例1: N-(m-トリルアミノカルボニル)-フェニルアラニン
温度計、滴下ロート、攪拌機を備えた4つ口フラスコに、L-フェニルアラニン16.5g及び水50gを仕込んだ後、内温を15℃に調整し、8%水酸化ナトリウム水溶液50gを加えL-フェニルアラニンを溶解した。内温を15℃に保持し、酢酸エチルに溶解したm-トリルイソシアネート13.3gを滴下し5時間撹拌した。反応液に酢酸エチルを加え、希塩酸で中和して生成物を酢酸エチルで抽出した。抽出液の酢酸エチルを濃縮後、濃縮残渣にトルエンを加えて結晶化した。結晶を濾別し乾燥して、白色結晶のN-(m-トリルアミノカルボニル)-フェニルアラニンを得た。融点は151℃であった。
合成例1のL-フェニルアラニン16.5gに代えて、L-メチオニン14.9gを用いる以外、合成例1と同様の操作により、白色結晶のN-(m-トリルアミノカルボニル)-メチオニンを得た。融点は142℃であった。
合成例1のL-フェニルアラニン16.5gに代えてL-バリン11.7gを用いる以外、合成例1と同様の操作により、白色結晶のN-(m-トリルアミノカルボニル)-バリンを得た。融点は169℃であった。
合成例1のL-フェニルアラニン16.5gに代えてL-システイン-S-ベンジル21.1gを用いる以外、合成例1と同様の操作により、白色結晶のN-(m-トリルアミノカルボニル)-システイン-S-ベンジルを得た。融点は164℃であった。
合成例1のL-フェニルアラニン16.5gに代えてL-チロシン18.1gを用いる以外、合成例1と同様の操作により、白色結晶のN-(m-トリルアミノスルホニル)-チロシンを得た。融点は161℃であった。
合成例1と同じ装置にグリシルグリシン13.2g、水50g、THF50gを仕込み8%水酸化ナトリウム水溶液50gを加えてグリシルグリシンを溶解した。内温を20~25℃に維持しながらフェニルイソチオシアナート13.5gを滴下し5時間撹拌した。
合成例1と同様の反応処理を行い白色結晶のN-フェニルアミノチオカルボニル-グリシルグリシンを得た。融点は157℃であった。
温度計、滴下ロート、攪拌機を備えた4つ口フラスコに、L-フェニルアラニン-メチルエステル塩酸塩21.5g及び酢酸エチル120gを仕込み、内温を10℃に保ちながら、トリエチルアミン10.1gを滴下した。内温を8~10℃に保持しながらp-トルエンスルホニルイソシアナート19.7gを滴下し撹拌を5時間継続した。反応終了後、反応液に少量の酢酸を加え、水を加えて有機層を水洗分離した。有機層を減圧濃縮した残渣にトルエンを加え結晶を析出させ、濾過により白色結晶のN-(p-トルエンスルホニルアミノカルボニル)-フェニルアラニン-メチルエステルを得た。融点は162℃であった。
温度計、滴下ロート、攪拌機を備えた4つ口フラスコに、β-アラニン8.9g、水30g、8%水酸化ナトリウム水溶液を仕込み内温10℃まで冷却した。塩化p-トルエンスルホニル19.1gを溶解したTHF溶液30gと8%水酸化ナトリウム50gとを各々4分割し、各分画を交互にフラスコに滴下し反応をおこなった。4時間撹拌した後、希塩酸で酸性化した。反応液は合成例1と同様にして反応処理し白色結晶のN-(p-トルエンスルホニル)-β-アラニンを得た。融点は125℃であった。
プラスチック中空粒子(商品名:ローペイクSN-1055:中空率:55% 固形分26.5%)100部、焼成カオリンの50%分散液100部、スチレン-ブタジエン系ラテックス(商品名:L-1571 固形分48%)25部、酸化澱粉の10%水溶液50部および水20部を混合して、アンダーコート用塗料を作成した。
[感熱記録用塗料の作成]
A液(染料分散液の調製)
3-(N,N-ジブチルアミノ)-6-メチル-7-アニリノフルオラン 10部
10%ポリビニルアルコール水溶液 10部
水 16.7部
N-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1) 20部
10%ポリビニルアルコール水溶液 20部
水 33.3部
1,2-ビス(m-トリルオキシ)エタン 15部
10%ポリビニルアルコール水溶液 15部
水 25部
A液(染料剤分散液) 36.7部
B液(顕色剤分散液) 73.3部
C液(増感剤分散液) 55.0部
支持体として坪量が53gの上質紙(酸性紙)にアンダーコート用塗料を乾燥後の面積当たりの質量が6g/m2となるように塗布および乾燥し、その後、感熱塗料が乾燥後の面積当たりの質量が3.5g/m2になるように塗布乾燥した。
このシートをス-パーカレンダーで平滑度(JISP8155:2010)が900~1200sになるように処理して感熱記録材料を作成した。
1.感熱記録性試験(発色試験)
作成した感熱記録材料について、感熱記録紙印字試験機(大倉電気社製TH-PMD)を用い、印加エネルギー0.38mJ/dotで印加した。記録部の印字濃度はマクベス反射濃度計RD-914で測定した。
感熱記録性試験で記録した感熱記録材料を試験温度60℃の恒温環境下に24時間放置した後、試験片の印字部画像濃度と未印字部の濃度をマクベス反射濃度計で測定した。
感熱記録性試験で記録した感熱記録材料を試験温度40℃、90%RHの環境下に24時間放置した後、試験片の印字部画像濃度と未印字部の濃度をマクベス反射濃度計で測定した。
感熱記録性試験で記録した感熱記録材料にサラダオイル中に1分間浸漬しその後、試験片の油をふき取り、画像濃度をマクベス反射濃度計で測定した。
実施例1のB液のN-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1)をN-(p-トルエンスルホニル)-フェニルアラニン(顕色剤2)に代える以外は実施例1と同様の操作をおこなった。
この実施例による感熱記録材料の各種試験結果は、表1に記載の通りであった。
実施例1のB液のN-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1)をN-(ベンジルオキシカルボニル)-バリン(顕色剤3)に代える以外は実施例1と同様の操作をおこなった。
この実施例による感熱記録材料の各種試験結果は、表1に記載の通りであった。
実施例1のB液のN-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1)をN-(m-トリルアミノカルボニル)-メチオニン(顕色剤4)に代える以外は実施例1と同様の操作をおこなった。
この実施例による感熱記録材料の各種試験結果は、表1に記載の通りであった。
実施例1のBのN-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1)をN-(m-トリルアミノカルボニル)-チロシン(顕色剤5)に代える以外は実施例1と同様の操作をおこなった。
この実施例による感熱記録材料の各種試験結果は、表1に記載の通りであった。
実施例1のB液のN-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1)をN-(m-トリルアミノカルボニル)-フェニルグリシン(顕色剤6)に代える以外は実施例1と同様の操作をおこなった。この実施例による感熱記録材料の各種試験結果は、表1に記載の通りであった。
実施例1のB液のN-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1)をN-(m-トリルアミノカルボニル)-バリン(顕色剤7)に代える以外は実施例1と同様の操作をおこなった。この実施例による感熱記録材料の各種試験結果は、表1に記載の通りであった。
実施例1のB液のN-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1)をN-(m-トリルアミノカルボニル)-システイン-S-ベンジル(顕色剤8)に代える以外は実施例1と同様の操作をおこなった。この実施例による感熱記録材料の各種試験結果は、表1に記載の通りであった。
実施例1のB液のN-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1)をN-(m-トリルアミノカルボニル)-β-アラニン(顕色剤9)に代える以外は実施例1と同様の操作をおこなった。この実施例による感熱記録材料の各種試験結果は、表1に記載の通りであった。
実施例1のB液のN-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1)をN-フェニルアミノチオカルボニルグリシルグリシン(顕色剤10)に代える以外は実施例1と同様の操作をおこなった。この実施例による感熱記録材料の各種試験結果は、表1に記載の通りであった。
実施例1のB液のN-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1)をN-(p-トルエンスルホニルアミノカルボニル)-フェニルアラニン-メチルエステル(顕色剤11)に代える以外は実施例1と同様の操作をおこなった。この実施例による感熱記録材料の各種試験結果は、表1に記載の通りであった。
実施例1のB液のN-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1)をN-(p-トルエンスルホニル)-β-アラニン(顕色剤12)に代える以外は実施例1と同様の操作をおこなった。この実施例による感熱記録材料の各種試験結果は、表1に記載の通りであった。
実施例1のB液のN-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1)をN-(p-トリルアミノカルボニル)-メチオニン(顕色剤13)に代える以外は実施例1と同様の操作をおこなった。この実施例による感熱記録材料の各種試験結果は、表1に記載の通りであった。
実施例1のB液のN-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1)をN-(フェニルアミノカルボニル)-メチオニン(顕色剤14)に代える以外は実施例1と同様の操作をおこなった。この実施例による感熱記録材料の各種試験結果は、表1に記載の通りであった。
実施例1のB液のN-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1)をN-アセチル-フェニルアラニン(顕色剤15)に代える以外は実施例1と同様の操作をおこなった。この比較例による感熱記録材料の各種試験結果は、表1に記載の通りであった。
実施例1のB液のN-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1)をN-ベンゾイル-バリン(顕色剤16)に代える以外は実施例1と同様の操作をおこなった。この比較例による感熱記録材料の各種試験結果は、表1に記載の通りであった。
実施例1のB液のN-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1)をN-ベンゾイル-β-アラニン(顕色剤17)に代える以外は実施例1と同様の操作をおこなった。この比較例による感熱記録材料の各種試験結果は、表1に記載の通りであった。
実施例1のB液のN-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1)をビスフェノールA(顕色剤18)に代える以外は実施例1と同様の操作をおこなった。この参照例による感熱記録材料の各種試験結果は、表1に記載の通りであった。
実施例1のB液のN-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1)を4,4’ビスフェノールS(顕色剤19)に代える以外は実施例1と同様の操作をおこなった。この参照例による感熱記録材料の各種試験結果は、表1に記載の通りであった。
[感熱記録用塗料の作成]
A液(染料分散液の調製)
3-(N,N-ジブチルアミノ)-6-メチル-7-アニリノフルオラン 10部
10%ポリビニルアルコール水溶液 10部
水 16.7部
N-(m-トリルアミノカルボニル)-メチオニン(顕色剤4) 20部
10%ポリビニルアルコール水溶液 20部
水 33.3部
1,2-ビス(m-トリルオキシ)エタン 15部
10%ポリビニルアルコール水溶液 15部
水 25部
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 5部
10%ポリビニルアルコール水溶液 5部
水 8.33部
A液(染料剤分散液) 36.7部
B液(顕色剤分散液) 73.3部
C液(増感剤分散液) 55.0部
D液(保存安定剤液) 18.33部
支持体として坪量が53gの上質紙(酸性紙)にアンダーコート用塗料を乾燥後の面積当たりの質量が6g/m2となるように塗布および乾燥し、その後、感熱塗料が乾燥後の面積当たりの質量が3.5g/m2になるように塗布乾燥した。
このシートをス-パーカレンダーで平滑度(JISP8155:2010)が900~1200sになるように処理して感熱記録材料を作成した。
作成した感熱記録材料についての1.感熱記録性試験(発色試験)、2.耐熱性試験、3.耐湿試験は、実施例1の場合と同じ方法で行った。4.耐油性試験、5.耐水性試験、6.耐可塑剤性試験は次の方法で行った。
感熱記録性試験で記録した感熱記録紙をサラダオイル中に10分間浸漬しその後、試験片の油を拭き取り、画像濃度をマクベス反射濃度計で測定した。
感熱記録性試験で記録した感熱記録紙を水中に24時間浸漬しその後、試験片を風乾させ、画像濃度と未印字部をマクベス反射濃度計で測定した。
ポリカーボネートパイプ(48mmφ)上にラップフィルム(商品名:ハイラップKMA三井化学製)を3重に巻き付け、感熱記録性試験で記録した感熱記録紙を乗せ、更にその上にラップフィルムを3重に巻き付け20℃65%RHの環境下で24時間放置し、その後、画像濃度と未印字部をマクベス反射濃度計で測定した。
実施例15のB液のN-(m-トリルアミノカルボニル)-メチオニン(顕色剤4)をN-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1)に代える以外は実施例15と同様の操作をおこなった。
この実施例による感熱記録材料の各種試験結果は、表2に記載の通りであった。
実施例15のB液のN-(m-トリルアミノカルボニル)-メチオニン(顕色剤4)をN-(フェニルアミノカルボニル)-メチオニン(顕色剤14)に代える以外は実施例15と同様の操作をおこなった。
この実施例による感熱記録材料の各種試験結果は、表2に記載の通りであった。
実施例15のB液のN-(m-トリルアミノカルボニル)-メチオニン(顕色剤4)をN-(p-トリルアミノカルボニル)-メチオニン(顕色剤13)に代える以外は実施例15と同様の操作をおこなった。
この実施例による感熱記録材料の各種試験結果は、表2に記載の通りであった。
実施例15のB液のN-(m-トリルアミノカルボニル)-メチオニン(顕色剤4)をN-(m-トリルアミノカルボニル)-バリン(顕色剤7)に代える以外は実施例15と同様の操作をおこなった。
この実施例による感熱記録材料の各種試験結果は、表2に記載の通りであった。
実施例15のB液のN-(m-トリルアミノカルボニル)-メチオニン(顕色剤4)をN-(m-トリルアミノカルボニル)-フェニルグリシン(顕色剤6)に代える以外は実施例15と同様の操作をおこなった。
この実施例による感熱記録材料の各種試験結果は、表2に記載の通りであった。
実施例15のB液のN-(m-トリルアミノカルボニル)-メチオニン(顕色剤4)をN-(m-トリルアミノカルボニル)-チロシン(顕色剤5)に代える以外は実施例15と同様の操作をおこなった。
この実施例による感熱記録材料の各種試験結果は、表2に記載の通りであった。
実施例15のD液の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)ブタンを1,1,3-トリス(2-メチル-4-ヒドロキシ-5-tert-ブチルフェニル)ブタンに代える以外は実施例15と同様の操作をおこなった。
この実施例による感熱記録材料の各種試験結果は、表2に記載の通りであった。
実施例15のD液の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)ブタンをジフェニルスルホン架橋型化合物(日本曹達社製:商品名:D-90、式(2)のうち、lが1~6の化合物の混合物)に代える以外は実施例15と同様の操作をおこなった。
この実施例による感熱記録材料の各種試験結果は、表2に記載の通りであった。
実施例1のD液の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)ブタンを4,4’-ビス[(4-メチル-3-フェノキシカルボニルアミノフェニル)ウレイド]フェニルスルホンに代える以外は実施例15と同様の操作をおこなった。
この実施例による感熱記録材料の各種試験結果は、表2に記載の通りであった。
実施例1のD液の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)ブタンを9.165部に代える以外は実施例15と同様の操作をおこなった。この実施例による感熱記録材料の各種試験結果は、表2に記載の通りであった。
実施例1のD液の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)ブタンを36.67部に代える以外は実施例15と同様の操作をおこなった。
この実施例による感熱記録材料の各種試験結果は、表2に記載の通りであった。
実施例1のD液の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)ブタンを73.34部に代える以外は実施例15と同様の操作をおこなった。
この実施例による感熱記録材料の各種試験結果は、表3に記載の通りであった。
実施例15のD液の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)ブタンを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)ブタンとジフェニルスルホン架橋型化合物の混合比1:1に代える以外は実施例15と同様の操作をおこなった。
この実施例による感熱記録材料の各種試験結果は、表3に記載の通りであった。
参照例1~7(実施例4、1、14、13、7、6、5)は、実施例15~21においてD液を使用しなかった以外は実施例15と同様である。これらの参照例3~9(実施例4、1、14、13、7、6、5)による感熱記録材料の各種試験結果は、表3に記載の通りであった。
参照例1は、実施例15のB液のN-(m-トリルアミノカルボニル)-メチオニンをビスフェノールA(顕色剤18)に代える以外は実施例15と同様である。この参照例1による感熱記録材料の各種試験結果は、表3に記載の通りであった。
参照例2は、実施例15のB液のN-(m-トリルアミノカルボニル)-メチオニン(顕色剤4)を4,4’ビスフェノールS(顕色剤19)に代える以外は実施例15と同様である。この参照例2による感熱記録材料の各種試験結果は、表3に記載の通りであった。
実施例1のB液のN-(m-トリルアミノカルボニル)-フェニルアラニン(顕色剤1)をN-(3-イソプロペニル-α,α-ジメチルベンジル)アミノカルボニル-メチオニン(顕色剤20)に代える以外は実施例1と同様の操作をおこなった。
この実施例による感熱記録材料の各種試験結果は、表4に記載の通りであった。
Claims (4)
- 常温で無色ないし淡色の塩基性染料と、加熱により該染料と接触して呈色し得る顕色剤とを含有する感熱記録層を支持体上に設けた感熱記録材料であって、前記顕色剤が下記一般式(1)で表されるN-置換アミノ酸誘導体の少なくとも一種である感熱記録材料。
(R-X)m-Y-(Z)m ・・・(1)
(式(1)中、RはC6~C10のアリール基、C1~C8のアルコキシ基、若しくはイソシアネート基の置換基を有していてもよいアルキル基、又は、C1~C8のアルキル基、C7~C11のアラルキル基、C6~C10のアリール基、C1~C8のアルコキシ基、若しくはイソシアネート基の置換基を有していてもよいアリール基を表す。
Xは、YのN末端に結合する基であって、-OCO-、-SO2NHCO-、-NHCO-、-NHCS-、又は-SO2-を表わす。
Yは、アミノ酸残基又はペプチド残基を表わし、Y基中の、セリン残基、スレオニン残基、アスパラギン酸残基、グルタミン酸残基、又はチロシン残基のOH基は、OR基又はOR”基に置換していてもよく、システイン残基のSH基は、SR基又はSR”基に置換していてもよく、ヒスチジン残基のNH基は、NR基又はNR’基に置換していてもよく、リシン残基又はオルニチン残基のNH2基は、NHR基又はNHR’基に置換していてもよく、R’はアミノ保護基を表し、R”はカルボキシ保護基を表す。
Zは、YのC末端に結合する基であって、OH基又はOR”基を表す。
複数のR、R’、R”は同じであっても、異なっていてもよく、互いに結合して環を形成していてもよい。
Yが、シスチン残基以外のアミノ酸残基であるとき又はシスチン残基を有さないペプチド残基であるときm=1であり、シスチン残基をn個有するペプチド残基であるときm=n+1であり、nは1又は2である。) - 前記顕色剤がN-(m-トリルアミノカルボニル)-フェニルアラニン、N-(m-トリルアミノカルボニル)-メチオニン、N-(p-トリルアミノカルボニル)-メチオニン、N-(フェニルアミノカルボニル)-メチオニン、N-(m-トリルアミノカルボニル)-バリン、N-(m-トリルアミノカルボニル)-フェニルグリシンおよびN-(m-トリルアミノカルボニル)-チロシンからなる群から選ばれる少なくとも1種である請求項1記載の感熱記録材料。
- 前記保存安定剤の含有量が、顕色剤100質量部に対して2.5~100質量部である請求項3記載の感熱記録材料。
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KR1020187002294A KR101920600B1 (ko) | 2015-09-18 | 2016-09-13 | 감열 기록 재료 |
ES16846443T ES2883287T3 (es) | 2015-09-18 | 2016-09-13 | Material de grabación termosensible |
CN201680049492.0A CN108025574B (zh) | 2015-09-18 | 2016-09-13 | 热敏记录材料 |
BR112018001967-4A BR112018001967B1 (pt) | 2015-09-18 | 2016-09-13 | Material de gravação sensível ao calor |
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JP2019043005A (ja) * | 2017-08-31 | 2019-03-22 | 三光株式会社 | 感熱記録材料 |
WO2021107037A1 (ja) | 2019-11-28 | 2021-06-03 | 三菱ケミカル株式会社 | 顕色剤及び感熱記録材料 |
WO2022176964A1 (ja) | 2021-02-18 | 2022-08-25 | 三菱ケミカル株式会社 | 積層体、カード、パスポート、これらの製造方法、及びレーザーマーキング方法 |
WO2023176856A1 (ja) | 2022-03-15 | 2023-09-21 | 三菱ケミカル株式会社 | 積層体、カード、パスポート、これらの製造方法、及びレーザーマーキング方法 |
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JPH0632060A (ja) * | 1992-07-15 | 1994-02-08 | Nippon Kayaku Co Ltd | 感熱記録材料 |
JPH09290566A (ja) * | 1996-02-26 | 1997-11-11 | Ricoh Co Ltd | 可逆性感熱発色組成物およびそれを用いた可逆性感熱記録媒体 |
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JP2019043005A (ja) * | 2017-08-31 | 2019-03-22 | 三光株式会社 | 感熱記録材料 |
WO2021107037A1 (ja) | 2019-11-28 | 2021-06-03 | 三菱ケミカル株式会社 | 顕色剤及び感熱記録材料 |
WO2022176964A1 (ja) | 2021-02-18 | 2022-08-25 | 三菱ケミカル株式会社 | 積層体、カード、パスポート、これらの製造方法、及びレーザーマーキング方法 |
WO2023176856A1 (ja) | 2022-03-15 | 2023-09-21 | 三菱ケミカル株式会社 | 積層体、カード、パスポート、これらの製造方法、及びレーザーマーキング方法 |
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