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GB1279672A - Process for the production of titanium dioxide coatings - Google Patents

Process for the production of titanium dioxide coatings

Info

Publication number
GB1279672A
GB1279672A GB2878169A GB2878169A GB1279672A GB 1279672 A GB1279672 A GB 1279672A GB 2878169 A GB2878169 A GB 2878169A GB 2878169 A GB2878169 A GB 2878169A GB 1279672 A GB1279672 A GB 1279672A
Authority
GB
United Kingdom
Prior art keywords
titanium
coated
coating
aqueous
titanium salt
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
GB2878169A
Inventor
Hans Wolfgang Kohlschuetter
Hubert Roessler
Helmut Getrost
Walter Reich
Walter Hoerl
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.)
Merck Patent GmbH
Original Assignee
Merck Patent 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 Merck Patent GmbH filed Critical Merck Patent GmbH
Priority to GB2878169A priority Critical patent/GB1279672A/en
Publication of GB1279672A publication Critical patent/GB1279672A/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
    • C09C1/0015—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
    • C09C1/0021—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings comprising a core coated with only one layer having a high or low refractive index
    • 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
    • C09C1/0015—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings
    • 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
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/06—Treatment with inorganic compounds
    • C09C3/063—Coating
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
    • 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
    • C01P2004/80—Particles consisting of a mixture of two or more inorganic phases
    • 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
    • C01P2006/12—Surface area
    • 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
    • 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
    • C01P2006/90—Other properties not specified above
    • 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
    • C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
    • C09C2200/10—Interference pigments characterized by the core material
    • C09C2200/102—Interference pigments characterized by the core material the core consisting of glass or silicate material like mica or clays, e.g. kaolin
    • 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
    • C09C2200/00—Compositional and structural details of pigments exhibiting interference colours
    • C09C2200/10—Interference pigments characterized by the core material
    • C09C2200/1062—Interference pigments characterized by the core material the core consisting of an organic compound, e.g. Liquid Crystal Polymers [LCP], Polymers or natural pearl essence
    • 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
    • C09C2220/00—Methods of preparing the interference pigments
    • C09C2220/10—Wet methods, e.g. co-precipitation
    • C09C2220/106—Wet methods, e.g. co-precipitation comprising only a drying or calcination step of the finally coated pigment

Landscapes

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

Abstract

1279672 Coating MERCK PATENT GmbH 30 June 1969 28781/69 Heading B2E [Also in Divisions C1 C3 and C4 In a process for production of titanium dioxide coatings by hydrolysis of titanium salts, an aqueous 0.001-5 molar solution of a titanium salt having a free acid content corresponding to a normality of 0.002-3, and an aqueous 0.025-10 N solution of an alkali metal or ammonium hydroxide or ammonium gas are fed concurrently into an aqueous suspension of particulate solid material to be coated, the suspension having a temperature of 50-100‹C and a pH of 0.5-5.0, the rate of addition of the base being just sufficient to neutralise the acid contained in the titanium salt solution as well as the acid formed by the hydrolysis, thus maintaining a constant pH of 0.5-5.0, and the quantity of titanium salt added per minute being maintained at 0.01 to 20x10<SP>-5</SP> moles/m<SP>2</SP> of surface to be coated. The aqueous suspension may also contain non- particulate articles to be coated. Specified salts are titanous and titanyl sulphates, titanium tri- and tetrachlorides and tri- and tetrabromides. When a trivalent titanium salt is used, oxygen is supplied to the reaction zone by, e.g. rapid agitation or by bubbling in air. Examples describe the coating of particles of mica, and glass beads. Other substrates specified are metals, graphite, barium sulphate, glass plates, plastics, and luminescent substances such as calcium tungstate, zinc and calcium silicates, cadmium borate, and calcium halophosphate activated with manganese, antimony or cerium. The coated material may be dried or may be dehydrated by calcining at, e.g. 700-1000‹C. A second oxide coating of, e.g. cobalt, nickel, iron or chromium oxide may be deposited on or with the titanium dioxide coating. The products are irridescent or nacreous pigments of various colours depending on the thickness of the TiO 2 layer.
GB2878169A 1969-06-30 1969-06-30 Process for the production of titanium dioxide coatings Expired GB1279672A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2878169A GB1279672A (en) 1969-06-30 1969-06-30 Process for the production of titanium dioxide coatings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2878169A GB1279672A (en) 1969-06-30 1969-06-30 Process for the production of titanium dioxide coatings

Publications (1)

Publication Number Publication Date
GB1279672A true GB1279672A (en) 1972-06-28

Family

ID=10281059

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2878169A Expired GB1279672A (en) 1969-06-30 1969-06-30 Process for the production of titanium dioxide coatings

Country Status (1)

Country Link
GB (1) GB1279672A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2058117A (en) * 1979-08-03 1981-04-08 Kasei Optonix Borate phosphor
US4456486A (en) * 1981-09-23 1984-06-26 Merck Patent Gesellschaft Mit Beschrankter Haftung Yellow nacreous pigments having calcined CR oxide and phosphate layer for improved light-fastness, process and use
US4457784A (en) * 1981-09-23 1984-07-03 Merck Patent Gesellschaft Mit Beschrankter Haftung Green nacreous pigments having calcined Cr oxide and phosphate layer, their preparation, and use
US4490179A (en) * 1982-03-26 1984-12-25 Merck Patent Gesellschaft Mit Beschrankter Haftung Process for rendering nacreous pigments hydrophobic
US4505755A (en) * 1982-12-28 1985-03-19 Onahama Sakai Kagaku Kabushiki Kaisha Method of producing surface-treated barium sulfate

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2058117A (en) * 1979-08-03 1981-04-08 Kasei Optonix Borate phosphor
US4456486A (en) * 1981-09-23 1984-06-26 Merck Patent Gesellschaft Mit Beschrankter Haftung Yellow nacreous pigments having calcined CR oxide and phosphate layer for improved light-fastness, process and use
US4457784A (en) * 1981-09-23 1984-07-03 Merck Patent Gesellschaft Mit Beschrankter Haftung Green nacreous pigments having calcined Cr oxide and phosphate layer, their preparation, and use
US4490179A (en) * 1982-03-26 1984-12-25 Merck Patent Gesellschaft Mit Beschrankter Haftung Process for rendering nacreous pigments hydrophobic
US4505755A (en) * 1982-12-28 1985-03-19 Onahama Sakai Kagaku Kabushiki Kaisha Method of producing surface-treated barium sulfate
US4551497A (en) * 1982-12-28 1985-11-05 Onahama Sakai Kagaku Kabushiki Kaisha Method of producing surface-treated barium sulfate

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