Classifications

• • C—CHEMISTRY; METALLURGY
  • C01—INORGANIC CHEMISTRY
  • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
  • C01G45/00—Compounds of manganese
  • C01G45/006—Compounds containing, besides manganese, two or more other elements, with the exception of oxygen or hydrogen
• • C—CHEMISTRY; METALLURGY
  • C01—INORGANIC CHEMISTRY
  • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
  • C01B19/00—Selenium; Tellurium; Compounds thereof
  • C01B19/002—Compounds containing, besides selenium or tellurium, more than one other element, with -O- and -OH not being considered as anions
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
  • C09C1/02—Compounds of alkaline earth metals or magnesium
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
  • C09C1/04—Compounds of zinc
• • C—CHEMISTRY; METALLURGY
  • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
  • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
  • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
  • C09C1/22—Compounds of iron
• • C—CHEMISTRY; METALLURGY
  • C01—INORGANIC CHEMISTRY
  • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
  • C01P2002/00—Crystal-structural characteristics
  • C01P2002/50—Solid solutions
  • C01P2002/52—Solid solutions containing elements as dopants

Definitions

• the invention relates to a solid of the formula Zni-t-eTtE e Oy y Yy.
• the present invention further relates to a process for producing such a solid and the use of such a solid as a colorant in plastics, paints and varnishes.
• Pigments are colorants which, in contrast to colorants, consist of particles and are practically insoluble in the application medium. Depending on their chemical structure, pigments can be divided into inorganic and organic pigments. Typical applications of pigments are paints, coatings, plastics and textiles.
• the object of the present invention was to provide solids which, when used as colorants, enable a deep shade of red and at the same time have high stability and good economy.
• T represents one or more transition metals selected from Mn, Cd, Cr, Fe, Co and Ni;
• E represents one or more alkaline earth metals selected from Be, Mg, Ca, Sr and Ba;
• Y represents one or more chalcogens selected from S, Se, Te; t has a value in the range of 0 to ⁇ 1; e has a value of 0 to ⁇ 1, and t + e ⁇ 1 y has a value of 0 to ⁇ 1.
• T is in the form of at least one selected from Mn 2+ , Cd 2+ , Cr 2+ , Fe 2+ , Co 2+ and Ni 2+ .
• E is in the form of at least one selected from Be 2+ , Mg 2+ , Ca 2+ , Sr 2+ and Ba 2+ .
• Y is in the form of at least one selected from S 2 " , Se 2" , Te 2 " .
• the solid according to the invention When used as a colorant, the solid according to the invention has coloristically usable shades in the range of yellow> orange> red. At the same time, the stability of this inorganic pigment is so high that even when processed under high temperatures and / or for long storage times under adequate conditions, no fading of the pigment occurs.
• the solid according to the invention has a high tinctorial strength and is inexpensive to produce, which makes the use considerably more economical than the previously known cerium-based red pigments.
• t has a value of 0.02 to 0.80, in particular 0.05 to 0.65.
• e has a value of 0.00 to 0.85, in particular 0.00 to 0.60.
• y has a value of 0.00 to 0.75, in particular 0.00 to 0.70.
• T is in the form of Mn.
• E is in the form of Mg, Ca and / or Sr.
• Y is in the form of S.
• the invention relates to a solid of a compound of the formula Zni-t-eTtE e Oy y Yy, wherein the compound has a wurtzite structure and wherein
• T represents one or more transition metals selected from Mn 2+ , Cd 2+ , Cr 2+ , Fe 2+ , Co 2+ and Ni 2+ ;
• E represents one or more alkaline earth metals selected from Be 2+ , Mg 2+ , Ca 2+ , Sr 2+ and Ba 2+ ;
• Y represents one or more chalcogens selected from S 2 " , Se 2" , Te 2 " , t has a value in the range of 0.05 to 0.65, e has a value of 0.00 to 0.60, and t + e ⁇ 1 y has a value of 0.00 to 0.70
• T is Mn 2+
• YS is 2 " .
• T is Mn 2+ and YS is 2 " .
• Y is in the form of a mixture of S and Se, in particular in a molar ratio of S: Se in the range of 1.00 to 0.00, in particular 0.95 to 0.05
• the solid according to the invention is constructed in a single phase.
• the present invention further relates to a method for producing a solid body in a compound of formula Zni-t-ette e y Yy Oi.
• the procedure is then such that compounds of the respective base elements and, if appropriate, of doping cations are intimately processed to a homogeneous mixture by means of dry mixing devices.
• the resulting premix is calcined in suitable fuels at temperatures of 600-1300 ° C.
• the calcinate is usually micronized in the aqueous phase or by a dry process, possibly after previous breakage.
• the end product is tested in terms of stability and coloristic in various application media.
• the typical procedure is to dissolve soluble compounds of the respective base elements and, if appropriate, of doping cations with stirring in water or, if required, in acid.
• the compounds used are converted into their insoluble form.
• the precipitated solids are separated by decantation or filtration of the mother liquor, washed free of salt and dried to a residual moisture content of ⁇ 2%.
• the resulting premix is calcined in suitable firing means at temperatures of 600-1250 ° C. The calcine is usually - possibly after previous break - in the liquid phase or by dry process micronized.
• the end product is tested in terms of stability and coloristic in various application media.
• the production of such solids is thus carried out either after a drying process, which is characterized by a homogenization of the dry ingredients in a dry mixer, or after a wet process, in which all components first in an aqueous solution and from this then precipitate by adjusting a suitable pH.
• the inventors have surprisingly found that particularly advantageous properties can be achieved by a combination of drying and wet process.
• the present application relates to a process for preparing a solid in a compound of the formula Zni-t-eTtE e Oy y Yy, wherein the compound has a wurtzite structure and wherein
• T represents one or more transition metals selected from Mn, Cd, Cr, Fe, Co and Ni;
• E represents one or more alkaline earth metals selected from Be, Mg, Ca, Sr and Ba;
• Y represents one or more chalcogenes selected from S, Se, Te, t has a value in the range of 0 to ⁇ 1, e has a value of 0 to ⁇ 1, and t + e ⁇ 1 y has a value of 0 to ⁇ 1, the method comprising the following steps:
• At least one compound comprising at least one of the chalcogens Y; wherein at least one of the provided compounds is substantially water-insoluble and at least one of the provided compounds is substantially water-soluble; Receiving the at least one substantially water-insoluble compound in an aqueous medium;
• the present application relates to a process for the preparation of a solid in a compound of formula Zni -t - eTtEeOi-y Yy, wherein the compound has a wurtzite structure, and wherein
• T represents one or more transition metals selected from Mn, Cd, Cr, Fe, Co and Ni
• E represents one or more alkaline earth metals selected from Be, Mg, Ca, Sr and Ba;
• Y represents one or more chalcogenes selected from S, Se, Te, t has a value in the range of 0.05 to 0.65, e has a value of 0.00 to 0.60, and t + e ⁇ 1 y has a value of 0.00 to 0.70, the method comprising the steps of:
• At least one compound comprising at least one of the chalcogens Y; wherein at least one of the provided compounds is substantially water-insoluble and at least one of the provided compounds is substantially water-soluble;
• Dissolving the at least one substantially water-soluble compound in the aqueous medium Changing a state, in particular the pH, of the aqueous medium such that the at least one substantially water-insoluble compound (s) is converted to water-insoluble compound (s);
• T is Mn 2+ .
• YS is 2 " .
• T is Mn 2+ and YS is 2 " .
• the process according to the invention has the following advantages:
• the method according to the invention thus leads to a wet process Saving on raw material costs and reducing wastewater pollution while achieving better homogeneity of solids compared to the dry process.
• the present invention further relates to the use of the described solids as colorants in various fields.
• the use according to the invention particularly preferably relates to the use as a color-forming agent in plastics, paints and varnishes.
• the use of the solids according to the invention as colorants in plastics has proved to be advantageous.
• the background is that such colored plastic articles are often produced by injection molding, which is accompanied by a relatively high thermal load of the embedded pigment in the plastic mass.
• this thermal stress often leads to fading of the red clay as a result of degradation of the colorants.
• This disadvantage is avoided by the pigments according to the invention, at the same time avoiding the economic disadvantages of the already known cerium-based red pigments.
• the calcine is micronised in an aqueous medium by means of a stirred ball mill (Mini mill, EIGER TORRANCE).
• the millbase is evaporated to dryness and pulverized by means of ultracentrifugal mill (ZM 200, Fa. RETSCH). The result is an orange-red powder with low hardness.
• the product is ground using a universal mixing device (Hauschild) in a medium-oil air-drying alkyd paint.
• a universal mixing device Hauschild
• V ⁇ LKEL medium-oil air-drying alkyd paint

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• Chemical & Material Sciences (AREA)
• Organic Chemistry (AREA)
• Inorganic Chemistry (AREA)
• Pigments, Carbon Blacks, Or Wood Stains (AREA)
• Inorganic Compounds Of Heavy Metals (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=63209395

Family Applications (1)

Country Status (5)

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• 2017
  • 2017-08-10 DE DE102017118270.5A patent/DE102017118270A1/de active Pending
• 2018
  • 2018-08-09 EP EP18755428.2A patent/EP3665231A1/de active Pending
  • 2018-08-09 US US16/637,292 patent/US11820671B2/en active Active
  • 2018-08-09 WO PCT/EP2018/071680 patent/WO2019030344A1/de unknown
  • 2018-08-09 CN CN201880059514.0A patent/CN111373001A/zh active Pending

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