GB745890A - Improvements in or relating to a method and process for preparing and treating finely divided pigmentary silica - Google Patents

Improvements in or relating to a method and process for preparing and treating finely divided pigmentary silica

Info

Publication number
GB745890A
GB745890A GB17208/54A GB1720854A GB745890A GB 745890 A GB745890 A GB 745890A GB 17208/54 A GB17208/54 A GB 17208/54A GB 1720854 A GB1720854 A GB 1720854A GB 745890 A GB745890 A GB 745890A
Authority
GB
United Kingdom
Prior art keywords
silica
sodium
finely divided
acid
treatment
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
GB17208/54A
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.)
Columbia Southern Chemical Corp
Original Assignee
Columbia Southern Chemical Corp
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 Columbia Southern Chemical Corp filed Critical Columbia Southern Chemical Corp
Publication of GB745890A publication Critical patent/GB745890A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • 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
    • C09C1/28—Compounds of silicon
    • C09C1/30—Silicic acid
    • C09C1/3045—Treatment with inorganic compounds
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
    • 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
    • C01P2006/80—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

Abstract

The surface area of finely divided silica produced according to Specification 745,822 is stabilized by heating the silica at a temperature above 50 DEG C., preferably 80-100 DEG C., for at least 30 minutes in aqueous dispersion. The "bound sodium" content of the silica may be reduced by treatment with acid, e.g. carbon dioxide or hydrogen sulphide or acetic, oxalic, sulphurous, phosphorous, phosphoric, sulphuric, hydrochloric or nitric acid, or a salt containing a cation which may be exchanged for sodium, e.g. ammonium, lithium, calcium, magnesium, strontium, barium, zinc, copper, nickel, cobalt, aluminium, iron and chromium salts. Treatment with acid is preferably carried out after the heat treatment. The sodium content may be reduced to below 1 per cent. The treated silica may be dried at 100-150 DEG C. or may be partially calcined. The product may contain 2-10 per cent both of "free" and "bound" water. It has an average particle size below 1 micron and a surface area of 25-200 sq. m./gm.
GB17208/54A 1951-10-09 1952-10-07 Improvements in or relating to a method and process for preparing and treating finely divided pigmentary silica Expired GB745890A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US745890XA 1951-10-09 1951-10-09

Publications (1)

Publication Number Publication Date
GB745890A true GB745890A (en) 1956-03-07

Family

ID=22120391

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17208/54A Expired GB745890A (en) 1951-10-09 1952-10-07 Improvements in or relating to a method and process for preparing and treating finely divided pigmentary silica

Country Status (1)

Country Link
GB (1) GB745890A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3206303A (en) * 1960-09-19 1965-09-14 Kerr Mc Gee Oil Ind Inc Process for precipitating solubilized silica from acidic aqueous media
DE2753392A1 (en) * 1976-12-02 1978-06-08 Shell Int Research METHOD FOR SUPPRESSING THE ENLARGEMENT IN THE SPECIFIC MEDIUM PORE DIAMETER OF SILICON DIOXIDE INDUCED BY A HYDROTHERMAL TREATMENT
US4457900A (en) * 1982-04-30 1984-07-03 Akzona Incorporated Silicic acid for the filtration of beverages, particularly beer
USRE32503E (en) * 1981-05-02 1987-09-15 Akzona Incorporated Silicic acid for the filtration of beverages particularly beer
EP0486476A2 (en) * 1986-12-23 1992-05-20 ALBRIGHT & WILSON LIMITED Processes and products for surface treatment

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3206303A (en) * 1960-09-19 1965-09-14 Kerr Mc Gee Oil Ind Inc Process for precipitating solubilized silica from acidic aqueous media
DE2753392A1 (en) * 1976-12-02 1978-06-08 Shell Int Research METHOD FOR SUPPRESSING THE ENLARGEMENT IN THE SPECIFIC MEDIUM PORE DIAMETER OF SILICON DIOXIDE INDUCED BY A HYDROTHERMAL TREATMENT
US4166047A (en) 1976-12-02 1979-08-28 Shell Oil Company Hydrothermal treatment of silica
USRE32503E (en) * 1981-05-02 1987-09-15 Akzona Incorporated Silicic acid for the filtration of beverages particularly beer
US4457900A (en) * 1982-04-30 1984-07-03 Akzona Incorporated Silicic acid for the filtration of beverages, particularly beer
EP0486476A2 (en) * 1986-12-23 1992-05-20 ALBRIGHT & WILSON LIMITED Processes and products for surface treatment
EP0486476A3 (en) * 1986-12-23 1992-08-12 Albright & Wilson Limited Processes and products for surface treatment

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