GB1104714A - Process for the production of iron oxide pigments - Google Patents

Process for the production of iron oxide pigments

Info

Publication number
GB1104714A
GB1104714A GB2163565A GB2163565A GB1104714A GB 1104714 A GB1104714 A GB 1104714A GB 2163565 A GB2163565 A GB 2163565A GB 2163565 A GB2163565 A GB 2163565A GB 1104714 A GB1104714 A GB 1104714A
Authority
GB
United Kingdom
Prior art keywords
iron oxide
salt
oxide pigments
production
hexacyanoferrate
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.)
Expired
Application number
GB2163565A
Inventor
Renate Credo
Leonhard Burczyk
Walter Schweter A Rolan Hornig
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.)
Kali Chemie AG
Original Assignee
Kali Chemie AG
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 Kali Chemie AG filed Critical Kali Chemie AG
Priority to GB2163565A priority Critical patent/GB1104714A/en
Publication of GB1104714A publication Critical patent/GB1104714A/en
Expired 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
    • 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
    • C09C1/24—Oxides of iron
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/02—Oxides; Hydroxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/60—Optical properties, e.g. expressed in CIELAB-values

Landscapes

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

Abstract

Iron oxide pigments are made by mixing an aq. ferrous salt solution with an aq. 25% wt. NH3 solution to precipitate Fe(OH)2, this is oxidized to the ferric state and then the product is oxidized at 60-80 DEG C. in the presence of metallic iron, a hexacyanoferrate (II) salt and an oxidizing agent. The resultant green iron oxide pigment is separated and dried. The green pigment can be converted to a red iron oxide pigment by heating to 280-600 DEG C. The oxidizing agent may be oxygen, air, potassium chlorate, a perchlorate or hydrogen peroxide. Part of the ferrous salt to be used can be introduced together with the hexacyanoferrate (II) salt.
GB2163565A 1965-05-21 1965-05-21 Process for the production of iron oxide pigments Expired GB1104714A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2163565A GB1104714A (en) 1965-05-21 1965-05-21 Process for the production of iron oxide pigments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2163565A GB1104714A (en) 1965-05-21 1965-05-21 Process for the production of iron oxide pigments

Publications (1)

Publication Number Publication Date
GB1104714A true GB1104714A (en) 1968-02-28

Family

ID=10166254

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2163565A Expired GB1104714A (en) 1965-05-21 1965-05-21 Process for the production of iron oxide pigments

Country Status (1)

Country Link
GB (1) GB1104714A (en)

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