FI886018A - TRANSPARENT METALLOXIDPIGMENT OCH FOERFARANDE FOER FRAMSTAELLNING DAERAV. - Google Patents

TRANSPARENT METALLOXIDPIGMENT OCH FOERFARANDE FOER FRAMSTAELLNING DAERAV. Download PDF

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Publication number
FI886018A
FI886018A FI886018A FI886018A FI886018A FI 886018 A FI886018 A FI 886018A FI 886018 A FI886018 A FI 886018A FI 886018 A FI886018 A FI 886018A FI 886018 A FI886018 A FI 886018A
Authority
FI
Finland
Prior art keywords
metal oxide
base
silicon dioxide
particles
extraction
Prior art date
Application number
FI886018A
Other languages
Finnish (fi)
Other versions
FI85157C (en
FI85157B (en
Inventor
Pekka Juhani Vapaaoksa
Pekka Juhani Eskelinen
Original Assignee
Kemira Oy
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 Kemira Oy filed Critical Kemira Oy
Priority to FI886018A priority Critical patent/FI85157C/en
Priority to CA002006525A priority patent/CA2006525A1/en
Priority to US07/456,322 priority patent/US5076849A/en
Priority to AT89313642T priority patent/ATE110755T1/en
Priority to BR898906847A priority patent/BR8906847A/en
Priority to EP89313642A priority patent/EP0377326B1/en
Priority to JP1345000A priority patent/JP2655195B2/en
Priority to DE68917894T priority patent/DE68917894T2/en
Publication of FI886018A publication Critical patent/FI886018A/en
Application granted granted Critical
Publication of FI85157B publication Critical patent/FI85157B/en
Publication of FI85157C publication Critical patent/FI85157C/en

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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
    • C09C1/0018—Pigments exhibiting interference colours, e.g. transparent platelets of appropriate thinness or flaky substrates, e.g. mica, bearing appropriate thin transparent coatings uncoated and unlayered plate-like particles
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/22—Surface treatment of glass, not in the form of fibres or filaments, by coating with other inorganic material
    • C03C17/23—Oxides
    • 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
    • C09C1/0015—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
    • C09C1/22—Compounds of iron
    • C09C1/24—Oxides of iron
    • C09C1/245—Oxides of iron of plate-like shape
    • 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
    • C09C1/36—Compounds of titanium
    • C09C1/3607—Titanium dioxide
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/60—Compounds characterised by their crystallite size
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/01—Particle morphology depicted by an image
    • C01P2004/03—Particle morphology depicted by an image obtained by SEM
    • 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
    • C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
    • 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
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • 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
    • C01P2004/82—Particles consisting of a mixture of two or more inorganic phases two phases having the same anion, e.g. both oxidic 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
    • C01P2006/60—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
    • C01P2006/80—Compositional purity
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2217/00—Coatings on glass
    • C03C2217/20—Materials for coating a single layer on glass
    • C03C2217/21—Oxides
    • C03C2217/229—Non-specific enumeration
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C2218/00—Methods for coating glass
    • C03C2218/30—Aspects of methods for coating glass not covered above
    • C03C2218/32—After-treatment
    • 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
    • C09C2200/1004—Interference pigments characterized by the core material the core comprising at least one inorganic oxide, e.g. Al2O3, TiO2 or SiO2
    • 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
    • C09C2200/30—Interference pigments characterised by the thickness of the core or layers thereon or by the total thickness of the final pigment particle
    • C09C2200/301—Thickness of the core
    • 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
    • C09C2200/30—Interference pigments characterised by the thickness of the core or layers thereon or by the total thickness of the final pigment particle
    • C09C2200/302—Thickness of a layer with high refractive material
    • 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
    • C09C2200/30—Interference pigments characterised by the thickness of the core or layers thereon or by the total thickness of the final pigment particle
    • C09C2200/303—Thickness of a layer with low refractive material
    • 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

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Prostheses (AREA)
  • Materials For Photolithography (AREA)
  • Supporting Of Heads In Record-Carrier Devices (AREA)

Abstract

The invention relates to a method for the preparation of transparent metal oxide pigment, in which a substantial portion of the silicon oxide is dissolved off from silicon dioxide based particles coated with transparent metal oxide, and to a transparent metal oxide pigment prepared by the method. In the extraction methods according to the prior art the problem is that in the extraction a part of the metal oxide is also dissolved, whereby thickness variations impairing the interference color of the metal oxide layer are created. Moreover, in the known methods hard-treated extraction chemicals which are detrimental for the environment are used. These problems have by means of the present invention been solved so that such particles are selected for the dissolution whose silicon dioxide portion is substantially soluble in base and metal oxide portion is substantially insoluble in base, and the dissolution is carried out by base. The silicon dioxide based particles can be selected from the from the beginning base-soluble particles or they can be made base-soluble by extracting them with mineral acid. The shape of the metal oxide particles obtained through base extraction corresponds fragmentarily to the form of the outer surface of the silicon dioxide based particles and they are in the form of single closed sheets or flakes.
FI886018A 1988-12-28 1988-12-28 FOER FARING FOR FRAMSTAELLNING AV ETT TRANSPARENT METALLOXIDPIGMENT. FI85157C (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
FI886018A FI85157C (en) 1988-12-28 1988-12-28 FOER FARING FOR FRAMSTAELLNING AV ETT TRANSPARENT METALLOXIDPIGMENT.
CA002006525A CA2006525A1 (en) 1988-12-28 1989-12-22 Transparent metal oxide pigment and method for preparing it
US07/456,322 US5076849A (en) 1988-12-28 1989-12-26 Transparent metal oxide pigment and method for its preparation
BR898906847A BR8906847A (en) 1988-12-28 1989-12-28 PROCESS FOR THE PREPARATION OF TRANSPARENT METAL OXIDE PIGMENT AND OBTAINED PIGMENT
AT89313642T ATE110755T1 (en) 1988-12-28 1989-12-28 PROCESS FOR MAKING A TRANSLUCENT METAL OXIDE PIGMENT.
EP89313642A EP0377326B1 (en) 1988-12-28 1989-12-28 Method for the preparation of a transparent metal oxide pigment
JP1345000A JP2655195B2 (en) 1988-12-28 1989-12-28 Method for producing transparent metal oxide pigment
DE68917894T DE68917894T2 (en) 1988-12-28 1989-12-28 Process for producing a translucent metal oxide pigment.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI886018 1988-12-28
FI886018A FI85157C (en) 1988-12-28 1988-12-28 FOER FARING FOR FRAMSTAELLNING AV ETT TRANSPARENT METALLOXIDPIGMENT.

Publications (3)

Publication Number Publication Date
FI886018A true FI886018A (en) 1990-06-29
FI85157B FI85157B (en) 1991-11-29
FI85157C FI85157C (en) 1992-03-10

Family

ID=8527638

Family Applications (1)

Application Number Title Priority Date Filing Date
FI886018A FI85157C (en) 1988-12-28 1988-12-28 FOER FARING FOR FRAMSTAELLNING AV ETT TRANSPARENT METALLOXIDPIGMENT.

Country Status (8)

Country Link
US (1) US5076849A (en)
EP (1) EP0377326B1 (en)
JP (1) JP2655195B2 (en)
AT (1) ATE110755T1 (en)
BR (1) BR8906847A (en)
CA (1) CA2006525A1 (en)
DE (1) DE68917894T2 (en)
FI (1) FI85157C (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59209413D1 (en) * 1991-10-18 1998-08-13 Merck Patent Gmbh COLORED AND COATED PLATE-SHAPED PIGMENTS
FR2686793B1 (en) * 1992-01-31 1994-04-15 Oreal COSMETIC COMPOSITION FOR MAKE-UP CONTAINING A TRANSPARENT PIGMENT OF TITANIUM OXIDE AND SILICON OXIDE.
JP3123697B2 (en) * 1994-02-07 2001-01-15 大日精化工業株式会社 Coating
US5611851A (en) * 1995-12-13 1997-03-18 The Mearl Corporation Process for preparing unsupported metal oxide nacreous pigments
US5895524A (en) * 1996-12-20 1999-04-20 The Boeing Company Making thin film metal particulates
US6358495B1 (en) * 1999-03-26 2002-03-19 Shiseido Co., Ltd. Titanium-silica complex and cosmetic preparation compounding the same
US6706785B1 (en) 2000-02-18 2004-03-16 Rona/Emi Industries, Inc. Methods and compositions related to laser sensitive pigments for laser marking of plastics
US7118622B2 (en) * 2004-05-19 2006-10-10 Engelhard Corporation Organic dyes suitable for use in drugs and cosmetics laked onto a platy titanium dioxide pigment
KR101827322B1 (en) * 2015-11-11 2018-02-09 씨큐브 주식회사 Pearlescent pigment having hollow structure and method of manufacturing the same

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB932753A (en) * 1959-10-12 1963-07-31 Ici Ltd Improvements in or relating to fillers and pigments by treatment with dihydrocarbyl polysiloxane
US3331699A (en) * 1963-10-24 1967-07-18 Du Pont Nacreous glass flake pigment compositions
US3389116A (en) * 1965-08-17 1968-06-18 Alcan Metal Powders Inc Metal pigment and method of making same
GB1303632A (en) * 1969-04-11 1973-01-17
US3758284A (en) * 1970-12-17 1973-09-11 W Haller Porous material and method of making the same
DE2244298C3 (en) * 1972-09-09 1975-06-19 Merck Patent Gmbh, 6100 Darmstadt Pearlescent pigments and processes for their manufacture
DE2313331C2 (en) * 1973-03-17 1986-11-13 Merck Patent Gmbh, 6100 Darmstadt Mica flake pigments containing iron oxide
US4192691A (en) * 1978-10-26 1980-03-11 The Mearl Corporation Metal oxide platelets as nacreous pigments
EP0028796B1 (en) * 1979-11-13 1983-07-13 Bayer Ag Coated magnetic metal or alloy pigments, process for their production, and their use
US4880472A (en) * 1987-06-16 1989-11-14 Ciba-Geigy Corporation Organic pigments coated with metal oxides
US4814018A (en) * 1986-06-23 1989-03-21 Tatsuta Electric Wire And Cable Co., Ltd. Filler for noise insulating material and noise insulating material using same
FI77881C (en) * 1987-04-14 1989-05-10 Kemira Oy YTBELAGDA SILIKATPARTIKLAR.

Also Published As

Publication number Publication date
JPH02263871A (en) 1990-10-26
JP2655195B2 (en) 1997-09-17
DE68917894T2 (en) 1995-01-05
DE68917894D1 (en) 1994-10-06
FI85157C (en) 1992-03-10
FI85157B (en) 1991-11-29
EP0377326A1 (en) 1990-07-11
BR8906847A (en) 1990-09-25
ATE110755T1 (en) 1994-09-15
CA2006525A1 (en) 1990-06-28
EP0377326B1 (en) 1994-08-31
US5076849A (en) 1991-12-31

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