GB1115482A - Modified satin white - Google Patents

Modified satin white

Info

Publication number
GB1115482A
GB1115482A GB1410165A GB1410165A GB1115482A GB 1115482 A GB1115482 A GB 1115482A GB 1410165 A GB1410165 A GB 1410165A GB 1410165 A GB1410165 A GB 1410165A GB 1115482 A GB1115482 A GB 1115482A
Authority
GB
United Kingdom
Prior art keywords
nh2o
cao
composition
pigment
product
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
GB1410165A
Inventor
Ernst Podschus
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of GB1115482A publication Critical patent/GB1115482A/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
    • C09C1/40—Compounds of aluminium
    • C09C1/402—Satin white, modifications thereof, e.g. carbonated or silicated; Calcium sulfoaluminates; Mixtures thereof, e.g. with calcium carbonate or kaolin
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/02—Amorphous compounds
    • 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
    • C01P2006/10—Solid density
    • 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
    • C01P2006/11—Powder tap density
    • 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
    • C01P2006/19—Oil-absorption capacity, e.g. DBP 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
    • C01P2006/60—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
    • 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
    • C01P2006/82—Compositional purity water content

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Silicon Compounds (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

A synthetic "modified satin white" pigment has the composition <FORM:1115482/C4-C5/1> where x is 4-7, y is 2-4, but x > y, z is 0.1-3, preferably 0.3-1, and n is 5-22. It is produced by reacting milk of lime and aluminium sulphate to produce mCaO.Al2O3.ySO3.nH2O, where y < m < x and treating, while moist, with at least one of (a) "active" silica and, if desired, CaO, (b) CaCl2 solution and an aqueous alkali metal silicate solution (c) freshly precipitated, undried calcium silicate filler which is amorphous to X-rays and of composition CaO.2-5SiO2.nH2O and separating, washing and drying the product. The dispersibility can be improved by adding to the filter cake before or after drying, small amounts (0.01-5% by wt.) of components such as detergents or emulsifiers, e.g. long-chain fatty acids or their corresponding esters, polyols, phosphoric acid esters or amines, which can be applied, if liquid, in aqueous or organic solution or if solid, to the suspended filter cake, or sprayed after dissolution in a solvent on to the still wet or dried filter cake, preferably during grinding. The product may be treated with water vapour so that not more than 22 molecules of water are taken up per molecule of pigment and this rehydrated and recrystallized product has greatly improved dispersibility.ALSO:A synthetic "modified satin white" pigment has the composition XCaO.Al2O3.ySo3.zSiO2. nH2O, where X is 4-7, y is 2-4, but X > y, z is 0.1-3, preferably 0.3-1 and n is 5-22. It is produced by reacting milk of lime and aluminium sulphate to produce mCaO.Al2O3.ySO3. nH2O, where y < m \sE x, e.g. of composition 1.5-3 CaO.Al2O3.3CaSO4, similar to the ore ettringite, and treating this while moist with at least one of (a) "active" silica and, if desired, CaO; (b) CaCl2 solution and an aqueous alkali metal silicate solution; (c) freshly precipitated, undried calcium silicate filler which is amorphous to X-rays, and of composition CaO.2-5 SiO2.nH2O, separating and washing the product and drying it e.g. in a turbulent stream of unreacting, hot gas. It may then be treated with water vapour so that not more than 22 molecules of water are taken up per molecule of pigment.
GB1410165A 1964-04-07 1965-04-02 Modified satin white Expired GB1115482A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF0042539 1964-04-07

Publications (1)

Publication Number Publication Date
GB1115482A true GB1115482A (en) 1968-05-29

Family

ID=7099133

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1410165A Expired GB1115482A (en) 1964-04-07 1965-04-02 Modified satin white

Country Status (1)

Country Link
GB (1) GB1115482A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2365554A1 (en) * 1973-11-12 1975-11-27 Lafarge Ciments Sa Satin white filler prodn. from silicate, aluminate and sulphate - by hydration of industrial cpds., for use in paper, paint and plastics
US4002484A (en) * 1972-11-13 1977-01-11 Ciments Lafarge S.A. Process for the manufacture of a fine white filler for industrial purposes
GB2172277A (en) * 1985-03-13 1986-09-17 Hokkaido Electric Power Preparation process of desulfurizing and denitrating agents

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4002484A (en) * 1972-11-13 1977-01-11 Ciments Lafarge S.A. Process for the manufacture of a fine white filler for industrial purposes
DE2356356C3 (en) 1972-11-13 1980-06-26 Ciments Lafarge S.A., Paris Process for the production of ettringite
DE2365554A1 (en) * 1973-11-12 1975-11-27 Lafarge Ciments Sa Satin white filler prodn. from silicate, aluminate and sulphate - by hydration of industrial cpds., for use in paper, paint and plastics
GB2172277A (en) * 1985-03-13 1986-09-17 Hokkaido Electric Power Preparation process of desulfurizing and denitrating agents
GB2172277B (en) * 1985-03-13 1989-06-21 Hokkaido Electric Power Preparation process of desulfurizing and denitrating agents

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