EP2451876A1 - Procédé de production de pigments - Google Patents

Procédé de production de pigments

Info

Publication number
EP2451876A1
EP2451876A1 EP10732338A EP10732338A EP2451876A1 EP 2451876 A1 EP2451876 A1 EP 2451876A1 EP 10732338 A EP10732338 A EP 10732338A EP 10732338 A EP10732338 A EP 10732338A EP 2451876 A1 EP2451876 A1 EP 2451876A1
Authority
EP
European Patent Office
Prior art keywords
cation
pigment
melamine
formula
iii
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP10732338A
Other languages
German (de)
English (en)
Inventor
Ulrich Feldhues
Frank Linke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lanxess Deutschland GmbH
Original Assignee
Lanxess Deutschland GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Lanxess Deutschland GmbH filed Critical Lanxess Deutschland GmbH
Priority to EP10732338A priority Critical patent/EP2451876A1/fr
Publication of EP2451876A1 publication Critical patent/EP2451876A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B45/00—Complex metal compounds of azo dyes
    • C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/14—Monoazo compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D11/00—Inks
    • C09D11/30—Inkjet printing inks
    • C09D11/32—Inkjet printing inks characterised by colouring agents
    • C09D11/322—Pigment inks
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/0005—Production of optical devices or components in so far as characterised by the lithographic processes or materials used therefor
    • G03F7/0007—Filters, e.g. additive colour filters; Components for display devices
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/22—Absorbing filters
    • G02B5/223—Absorbing filters containing organic substances, e.g. dyes, inks or pigments

Definitions

  • the invention relates to a process for the preparation of melamine-embedded pigments, and their hydrates, and to the use of these process products.
  • EP-A 1 612 246 also describes large quality variations in the batch production of the azo-barbituric acid Ni complex according to the prior art and proposes to avoid this disadvantage by certain additions in the synthesis. However, this requires an additional logistical effort and has an influence on the product composition, since these additives can contaminate the end product.
  • EP-A-1987045 describes a process in which a mixture of the mono- and di-cation complexes of azobarbituric acid known from EP-A-1086992 is reacted with a nickel compound and melamine. The reproducibility of this process is already improved. However, the products obtained by this process still show deficiencies in quality, especially in terms of particle size, particle size distribution and transparency.
  • the invention therefore relates to a process for the preparation of pigments of the formula (I)
  • R is hydrogen or C j -Cz ⁇ alkyl, which is optionally substituted by OH groups, very particularly preferably, wherein
  • R is hydrogen. - -
  • the compound (I) may also contain further compounds, as described, for example, in EP 0994162 (there page 5, line 40 to page 7, line 58).
  • the compound (I) preferably contains 1.5 to 2.2 units of melamine or melamine derivative, in particular 1.9 to 2.1 units.
  • Particularly preferred is the cation Kl + in the formula (II) for an alkali cation, in particular Li, Na or K cation, 1 A alkaline earth, in particular 1 A Mg, 1 A Ca cation, 1/3 AI cation or for optionally substituted with any radicals ammonium cation, in particular unsubstituted ammonium cation.
  • Kl® is K + .
  • Preferred mono-salts of the formula (II) are monohydrates.
  • the mixture is prepared by adding a dilute aqueous hydrochloric acid solution of the mono-salt (II).
  • the inventive method in which based on the sum of the formulas II and III, the proportion of the free azobarbituric acid of formula III 5 to 80 wt -.%, In particular 10 to 50 wt .-%, most preferably 10 to 30 wt .-% is.
  • Suitable nickel compounds are, in particular, nickel formate, nickel nitrate, nickel sulfate, nickel chloride and / or nickel acetate; nickel chloride is particularly preferred.
  • the nickel compound is preferably used in a molar ratio to the sum of the two compounds of the formulas (II) and (III) of 95% to 120%, in particular from 100% to 110%.
  • the erfmdungshiele process at a temperature of 60 to 100 0 C, in particular 70 - 90 0 C.
  • the reaction according to the invention is carried out in a solvent, wherein in particular a water-containing solvent system is used.
  • Further solvent components are organic solvents. Preference is given to Ci - C / pAlkohole.
  • an aqueous solvent in particular with a proportion of water of more than 50 wt .-%, preferably from 80 to 100 wt .-%. Most preferably, this is done - - Process according to the invention in an aqueous solvent system without addition of organic solvents.
  • melamine or the melamine derivative is added first to the compounds of the formula (II) and (III) and then the nickel compound.
  • the pH in the reaction with the nickel compound and with melamine is preferably less than pH 7, preferably less than pH 3, in particular at pH 1 to 2.
  • the reaction to compound (I) is completed after the addition of the nickel compound by one to five hours of stirring, in particular at temperatures from 60 to 100 0 C.
  • the pigments are obtained by the inventive method by a heat, such as disclosed in the EP Al-0994162 or DE 10328999 Al is described, post-treatment. However, this after-treatment can advantageously be completely eliminated.
  • the suspension preferably obtained in the preparation is preferably filtered and the resulting presscake may optionally be dried after washing with water.
  • conventional drying methods such as paddle drying etc. come into question. With such drying methods and subsequent grinding of the pigment in a conventional manner, powdery pigments are obtained.
  • the presscake is preferably spray-dried as an aqueous slurry.
  • the slurry to be sprayed preferably has a solids content of 10 to 40 wt .-%, in particular 15 to 30 wt .-%.
  • the dried pigments are preferably present as hydrates, depending on the drying conditions.
  • Preferred pigments prepared by the process according to the invention have a BET surface area of> 100 m 2 / g, preferably from 130 to 210 m 2 / g, in particular from 150 to 190 m 2 / g, which were determined according to DIN 66131.
  • the invention further relates to a process for the preparation of pigment preparations in which at least one pigment prepared according to the invention and at least one dispersant are mixed. According to the invention are also corresponding pigment preparations. These pigment preparations are preferably used for incorporation into aqueous systems.
  • suitable dispersants reference may be made to the prior art, in particular EP-Al-0994164, page 8, line 56 to page 11, line 23, the disclosure of which is the subject of this application.
  • the invention further relates to a photoresist which comprises at least one photocurable monomer and at least one photoinitiator and at least one pigment prepared by the process according to the invention.
  • the invention further relates to color filters and liquid crystal displays produced therefrom, comprising at least one pigment prepared by the process according to the invention.
  • the pigment prepared according to the invention preferably in an organic solvent, optionally with the addition of a
  • Solvent is processed into a photoresist, which subsequently by means of suitable
  • Coating methods such as e.g. Roller, spray, spin, dip or air knife coating on a suitable substrate, generally a glass plate is applied, exposed by photomask and then cured and developed into the finished colored filter.
  • the invention further preferably relates to the use of the pigment according to the invention as a pigment for color filters in liquid crystal displays.
  • the compound (I) prepared according to the present invention containing melamine incorporated therein, or pigment preparations thereof are excellently suited for all pigment application purposes.
  • pigmenting paints of all kinds for the production of printing inks, distempers or binder colors, for the mass coloration of synthetic, semisynthetic or natural macromolecular substances, such as polyvinyl chloride, polystyrene, polyamide, polyethylene or polypropylene. They can also be used for the spin-dyeing of natural, regenerated or artificial fibers, such as cellulose, polyester, polycarbonate, polyacrylonitrile or polyamide fibers, as well as for printing on textiles and paper.
  • finely divided, stable, aqueous pigmentations of dispersion and paints which are useful for paper dyeing, for the pigment printing of textiles, for laminate printing or for the spin dyeing of viscose, by grinding or kneading in the presence of nonionic, anionic or cationic surfactants are produced.
  • the pigments produced by the process according to the invention are outstandingly suitable for ink jet applications and for color filters for liquid crystal displays. - -
  • the starting material for the process according to the invention was Example 1 of EP-A 1 086 992, ie the ⁇ -modification azobarbituric acid monopotassium salt x 1 H 2 O, which is described below.
  • the specific surface area was determined according to DIN 66131: determination of the specific surface area of solids by gas adsorption according to Brunauer, Emmett and Teller (BET).
  • BET Brunauer, Emmett and Teller
  • the product had a BET surface area of 83 m 2 / g.
  • the product showed in the electron microscope very non-uniform, partly platelike, partly pronounced needle-like particles.
  • the specific surface area was determined according to DIN 66131: determination of the specific surface area of solids by gas adsorption according to Brunauer, Emmett and Teller (B.E.T.).
  • the product had a BET surface area of 170 m Ig.
  • the product showed very uniform, small, almost platelet-shaped particles in the electron microscope.
  • the product had a BET surface area of 166 m 2 / g.
  • the product showed very uniform, small, almost platelet-shaped particles in the electron microscope.
  • the product had a BET surface area of 178 m 2 / g.
  • the product showed very uniform, small, short-needle particles in the electron microscope.
  • Feed pigment pigment from inventive synthesis example 1
  • the pigment suspension was milled in a horizontal, closed bead mill using yttria-stabilized zirconia beads (0.6 to 1.0 mm in diameter). Production of a photoresist
  • Parts of the preparation thus obtained were 34.5 parts by weight of trimethylolpropane triacrylate (monomeric reactive diluent) and 13.8 parts by weight of a photoreaction starter based on benzophenone and N, N'-tetraethyl-4,4'-diaminobenzophenone in the ratio of 3 / 1 part by weight homogeneously added with stirring. This gave a UV radiation-curable photoresist, which was applied to a transparent substrate and developed into a color filter.
  • the photoresist was spin-coated on a 300 x 350 mm piece of cleaned Boro silicate glass (Corning® 7059, Owens Corning Corp.) and coated at 110 0 C for 5 minutes in an oven under clean conditions to an approx. 2 ⁇ m thick film dried.
  • Boro silicate glass Corning® 7059, Owens Corning Corp.
  • the film was UV-exposed after cooling by means of a negative mask to obtain the desired stripe pattern and an ultra-high pressure mercury vapor lamp at a dose of 200 mJ / cm 2 and then developed by means of 0.06% aqueous potassium hydroxide solution at room temperature, cleaned with demineralized water and dried. This was followed by a 30-minute post-curing at 235 ° C in an oven under clean conditions.
  • the yellow color filter 1 according to the invention thus obtained had a very clearly improved spectral transparency compared with the non-inventive color filter N prepared according to use example N.
  • the color purity and brilliance of the color filter 1 is excellent.
  • the yellow color filter 2 according to the invention thus obtained possessed a very clearly improved spectral transparency compared to the non-inventive color filter N prepared according to use example N.
  • the color purity and brilliance of the color filter 2 is excellent. - -
  • Pigment used Pigment of the invention Synthesis Example 3 Analogous to the use of Example 1 were added 100 parts by weight of pigment in the Synthesis Example 3, which was previously dried at 80 0 C to a residual moisture of less than 1% by weight, homogeneous in the preparation of Application example 1 entered.
  • the resulting pigment suspension was ground in a horizontal, closed bead mill using yttria-stabilized zirconia beads analogously to Use Example 1.
  • the yellow color filter 3 according to the invention thus obtained had a very clearly improved spectral transparency compared to the non-inventive color filter N prepared according to use example N.
  • the color purity and brilliance of the color filter 3 is excellent.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Wood Science & Technology (AREA)
  • Optical Filters (AREA)
  • Paints Or Removers (AREA)
  • Inks, Pencil-Leads, Or Crayons (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Plural Heterocyclic Compounds (AREA)

Abstract

L'invention concerne un procédé de production de pigments de formule (I) ou de structures tautomères ainsi que leurs hydrates, dans lesquels la mélamine ou des dérivés de la mélamine sont inclus, ledit procédé étant caractérisé en ce qu'il consiste à mettre en réaction le mono-sel d'acide azobarbiturique de formule (II) avec un composé du nickel et la mélamine ou un dérivé de la mélamine en présence de l'acide azobarbiturique libre de formule (I?I), le cation K1? représentant un cation monovalent quelconque ou la fraction d'un cation multivalent quelconque qui correspond à une charge positive de 1, à l'exception de H+.
EP10732338A 2009-07-08 2010-07-05 Procédé de production de pigments Withdrawn EP2451876A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP10732338A EP2451876A1 (fr) 2009-07-08 2010-07-05 Procédé de production de pigments

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP09164931A EP2272919B1 (fr) 2009-07-08 2009-07-08 Procédé destiné à la fabrication de pigments
EP10732338A EP2451876A1 (fr) 2009-07-08 2010-07-05 Procédé de production de pigments
PCT/EP2010/059543 WO2011003851A1 (fr) 2009-07-08 2010-07-05 Procédé de production de pigments

Publications (1)

Publication Number Publication Date
EP2451876A1 true EP2451876A1 (fr) 2012-05-16

Family

ID=41491546

Family Applications (2)

Application Number Title Priority Date Filing Date
EP09164931A Not-in-force EP2272919B1 (fr) 2009-07-08 2009-07-08 Procédé destiné à la fabrication de pigments
EP10732338A Withdrawn EP2451876A1 (fr) 2009-07-08 2010-07-05 Procédé de production de pigments

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP09164931A Not-in-force EP2272919B1 (fr) 2009-07-08 2009-07-08 Procédé destiné à la fabrication de pigments

Country Status (8)

Country Link
US (1) US20120129099A1 (fr)
EP (2) EP2272919B1 (fr)
JP (1) JP2012532940A (fr)
CN (1) CN102471598A (fr)
ES (1) ES2386854T3 (fr)
IN (1) IN2012DN00337A (fr)
TW (1) TWI476249B (fr)
WO (1) WO2011003851A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ304515B6 (cs) * 2012-12-17 2014-06-11 Univerzita Pardubice Způsob výroby žlutého pigmentu na bázi komplexu nikelnatého kationu, melaminu a azobarbiturové kyseliny a nové krystalové modifikace tohoto pigmentu připravitelné tímto způsobem
JP6826828B2 (ja) * 2016-07-14 2021-02-10 株式会社Ｄｎｐファインケミカル カラーフィルタ用色材分散液、カラーフィルタ用感光性着色樹脂組成物、カラーフィルタ、及び表示装置

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0994162B1 (fr) 1998-10-15 2004-01-14 Bayer Chemicals AG Pigments de complexes métalliques
DE19847586A1 (de) * 1998-10-15 2000-04-20 Bayer Ag Neue Pigmentformen
DE19945245A1 (de) 1999-09-21 2001-03-22 Bayer Ag Mono- und Dikaliumsalze von Azoverbindungen
EP1146087B1 (fr) * 2000-04-04 2003-11-05 Bayer Ag Pigments organiques pour filtres colorés pour afficheurs à cristaux liquides
DE10035494A1 (de) * 2000-07-21 2002-01-31 Bayer Ag Pigmentpräparationen
DE10328999B4 (de) 2003-06-27 2006-08-31 Lanxess Deutschland Gmbh Verfahren zur Herstellung von Metallkomplexpigmenten mit niedriger Dispergierhärte
DE102004019020A1 (de) * 2004-04-20 2005-11-10 Bayer Chemicals Ag Organische Pigmentpräparationen
JP4158748B2 (ja) * 2004-07-02 2008-10-01 東洋インキ製造株式会社 アゾバルビツール酸金属錯体顔料およびその製造方法
DE102005033581B4 (de) * 2005-07-19 2007-04-26 Lanxess Deutschland Gmbh Organische Pigmente für Farbfilter
DE102005033580A1 (de) * 2005-07-19 2007-01-25 Lanxess Deutschland Gmbh Verfahren zur Herstellung von Metall-Verbindungen einer Azo-Verbindung in Gegenwart von Impfkristallen
DE102005033583A1 (de) * 2005-07-19 2007-01-25 Lanxess Deutschland Gmbh Verfahren zur Herstellung von Metall-Verbindungen einer Azo-Verbindung unter Anwendung eines mehrstufigen Temperungsverfahren
DE102005033582A1 (de) * 2005-07-19 2007-01-25 Lanxess Deutschland Gmbh Verfahren zur Herstellung von Metall-Verbindungen einer Azo-Verbindung unter Einsatz einer Umpumpung
EP1816132A1 (fr) 2006-01-26 2007-08-08 Engelhard Corporation Procédé de préparation des composés du phosphore
DE102006032591A1 (de) * 2006-07-13 2008-01-17 Lanxess Deutschland Gmbh Verfahren zur Herstellung von Pigmenten

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011003851A1 *

Also Published As

Publication number Publication date
WO2011003851A1 (fr) 2011-01-13
TWI476249B (zh) 2015-03-11
US20120129099A1 (en) 2012-05-24
ES2386854T3 (es) 2012-09-03
EP2272919A1 (fr) 2011-01-12
TW201107424A (en) 2011-03-01
CN102471598A (zh) 2012-05-23
EP2272919B1 (fr) 2012-06-06
JP2012532940A (ja) 2012-12-20
IN2012DN00337A (fr) 2015-08-21

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