GB481317A - New and improved pigment - Google Patents

New and improved pigment

Info

Publication number
GB481317A
GB481317A GB35260/36A GB3526036A GB481317A GB 481317 A GB481317 A GB 481317A GB 35260/36 A GB35260/36 A GB 35260/36A GB 3526036 A GB3526036 A GB 3526036A GB 481317 A GB481317 A GB 481317A
Authority
GB
United Kingdom
Prior art keywords
silica
pigment
particles
ammonia
base
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
GB35260/36A
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.)
BURGESS TITANIUM Co
Original Assignee
BURGESS TITANIUM Co
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 BURGESS TITANIUM Co filed Critical BURGESS TITANIUM Co
Publication of GB481317A publication Critical patent/GB481317A/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
    • C09C1/0081—Composite particulate pigments or fillers, i.e. containing at least two solid phases, except those consisting of coated particles of one compound
    • 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
    • C09C1/0081—Composite particulate pigments or fillers, i.e. containing at least two solid phases, except those consisting of coated particles of one compound
    • C09C1/0084—Composite particulate pigments or fillers, i.e. containing at least two solid phases, except those consisting of coated particles of one compound containing titanium dioxide
    • C09C1/0087—Composite particulate pigments or fillers, i.e. containing at least two solid phases, except those consisting of coated particles of one compound containing titanium dioxide only containing titanium dioxide and silica or silicate
    • 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
    • C01P2006/80—Compositional purity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Organic Chemistry (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)

Abstract

A composite pigment comprises a mixture of a base pigment and silica particles, containing more than 2 per cent of silica, said composite pigment having a tinting strength at least substantially equal to that of said base pigment alone, the silica being produced by the calcination of the silicon hydroxide formed by the reaction in aqueous solution of an alkali silicofluoride with ammonia under such conditions that the hydroxide formed has the appearance of a crystalline precipitate. Titania, zinc oxide, zinc sulphide, white lead and lithopone are specified as base pigments, and amounts of silica up to 25 per cent of the composite pigment are mentioned. Silica in the desired form may be obtained by adding ammonium silicofluoride solution to an excess of aqueous ammonia, over a considerable range of temperatures, but if the ammonia is added to the silicofluoride solution, so that an excess of ammonia is not present until the end of the reaction, the temperature must be kept below 34 DEG C. to avoid the formation of a gelatinous hydroxide. In each case the precipitate is washed, dried and calcined, and the silica so formed has a comparatively high tinting strength and oil absorption, is soft in texture, and its particles are usually of less than 0,5 micron in diameter. The base pigment and the silicon hydroxide may be coprecipitated, the silicon hydroxides may be precipitated on to particles of the base pigment, or the base pigment may be precipitated on to particles of the silica. Reference has been directed by the Comptroller to Specification 456,058.
GB35260/36A 1936-01-13 1936-12-23 New and improved pigment Expired GB481317A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US481317XA 1936-01-13 1936-01-13

Publications (1)

Publication Number Publication Date
GB481317A true GB481317A (en) 1938-03-09

Family

ID=21952900

Family Applications (1)

Application Number Title Priority Date Filing Date
GB35260/36A Expired GB481317A (en) 1936-01-13 1936-12-23 New and improved pigment

Country Status (1)

Country Link
GB (1) GB481317A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3385718A (en) * 1964-08-21 1968-05-28 New Jersey Zinc Co Titanium dioxide-silica pigment
DE2323481A1 (en) * 1973-05-10 1974-11-28 Degussa INORGANIC COLOR PIGMENTS AND METHOD FOR THEIR PRODUCTION

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3385718A (en) * 1964-08-21 1968-05-28 New Jersey Zinc Co Titanium dioxide-silica pigment
DE2323481A1 (en) * 1973-05-10 1974-11-28 Degussa INORGANIC COLOR PIGMENTS AND METHOD FOR THEIR PRODUCTION

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