GB1530899A - Process for producing a pigment - Google Patents

Process for producing a pigment

Info

Publication number
GB1530899A
GB1530899A GB4916274A GB4916274A GB1530899A GB 1530899 A GB1530899 A GB 1530899A GB 4916274 A GB4916274 A GB 4916274A GB 4916274 A GB4916274 A GB 4916274A GB 1530899 A GB1530899 A GB 1530899A
Authority
GB
United Kingdom
Prior art keywords
suspension
pigment
mixture
alkali metal
ferrous
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
GB4916274A
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.)
Redland Roof Tiles Ltd
Original Assignee
Redland Roof Tiles Ltd
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 Redland Roof Tiles Ltd filed Critical Redland Roof Tiles Ltd
Priority to GB4916274A priority Critical patent/GB1530899A/en
Publication of GB1530899A publication Critical patent/GB1530899A/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
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/30—Particle morphology extending in three dimensions
    • C01P2004/32—Spheres
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • 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)
  • Compounds Of Iron (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)

Abstract

1530899 Iron oxide pigment REDLAND ROOF TILES Ltd 13 iFeb 1976 [13 Nov 1974] 49162/74 Heading C1A An iron oxide pigment is made by oxidizing a mixture of a suspension of ferrous hydroxide and an alkali metal halide or ammonium halide at pH 8-10. The mixture may be produced by reacting together stoichiometric quantities of a hydrated ferrous sulphate and an alkali metal or ammonium hydroxide to give a ferrous hydroxide suspension of pH 8-10 then adding the halide to the suspension or it may be made by reacting together ferrous chloride and an alkali metal or ammonium hydroxide. The oxidation is preferably performed pH 8À5-9À5 at a temperature of not less than 70‹ C. by bubbling steam and either air or O 2 through the mixture. Preferably the gas is passed through a sintered material to produce small bubbles. After formation of the pigment, the suspension is filtered and the pigment is washed to remove byproducts.
GB4916274A 1976-02-13 1976-02-13 Process for producing a pigment Expired GB1530899A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4916274A GB1530899A (en) 1976-02-13 1976-02-13 Process for producing a pigment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4916274A GB1530899A (en) 1976-02-13 1976-02-13 Process for producing a pigment

Publications (1)

Publication Number Publication Date
GB1530899A true GB1530899A (en) 1978-11-01

Family

ID=10451397

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4916274A Expired GB1530899A (en) 1976-02-13 1976-02-13 Process for producing a pigment

Country Status (1)

Country Link
GB (1) GB1530899A (en)

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19960212