GB1143019A - Production of sols - Google Patents

Production of sols

Info

Publication number
GB1143019A
GB1143019A GB43795/66A GB4379566A GB1143019A GB 1143019 A GB1143019 A GB 1143019A GB 43795/66 A GB43795/66 A GB 43795/66A GB 4379566 A GB4379566 A GB 4379566A GB 1143019 A GB1143019 A GB 1143019A
Authority
GB
United Kingdom
Prior art keywords
silica
sols
disymmetry
heel
aqueous
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
GB43795/66A
Inventor
David Grant
John Omri Wright
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.)
Monsanto Chemicals Ltd
Original Assignee
Monsanto Chemicals Ltd
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 Monsanto Chemicals Ltd filed Critical Monsanto Chemicals Ltd
Priority to GB43795/66A priority Critical patent/GB1143019A/en
Priority to NL6712898A priority patent/NL6712898A/xx
Priority to ES345420A priority patent/ES345420A1/en
Priority to DE19671667622 priority patent/DE1667622C3/en
Priority to FR122434A priority patent/FR1547602A/en
Priority to BE704383D priority patent/BE704383A/xx
Priority to JP6267067A priority patent/JPS4620137B1/ja
Publication of GB1143019A publication Critical patent/GB1143019A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
    • C01B33/146—After-treatment of sols

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Silicon Compounds (AREA)

Abstract

1,143,019. Silica sols. MONSANTO CHEMICALS Ltd. 21 Aug., 1967 [30 Sept., 1966], No. 43795/66. Heading C1A. Aqueous dispersions of silica particles are made as follows: aqueous silicic acid, having an acid pH, is added to a heated vessel containing a heel comprising a dispersion of silica particles of size greater than 500Š in aqueous alkali metal silicate solution, and water is evaporated, preferably at atmospheric pressure, from the vessel during addition of the acid, which is best added over a period of 7 to 9 hours. The resulting sol comprises particles of disymmetry diameter greater than 500Š. The initial composition of the heel is such that the molar ratio M 2 O (where M is an alkali metal) to overall silica is 1 : 5 to 40. The quantity of aqueous silicic acid is such that the silica particles in the initial heel represent not less than 1 % of the total silica content of the product, and such that the ratio M 2 O: overall SiO 2 in the product is 1 : 50 to 300. Sols containing 20-55% silica by weight may be made by the process described above (which is for sols containing up to 20% SiO 2 ) followed by evaporation to the required concentration. Silica particle disymmetry diameters from 500Š to 10,000Š can be obtained although sols of particle disymmetry diameter greater than 2500Š tend to deposit on standing.
GB43795/66A 1966-09-30 1966-09-30 Production of sols Expired GB1143019A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB43795/66A GB1143019A (en) 1966-09-30 1966-09-30 Production of sols
NL6712898A NL6712898A (en) 1966-09-30 1967-09-21
ES345420A ES345420A1 (en) 1966-09-30 1967-09-23 Production of sols
DE19671667622 DE1667622C3 (en) 1966-09-30 1967-09-25 Process for the preparation of an aqueous dispersion of SiO deep 2 particles
FR122434A FR1547602A (en) 1966-09-30 1967-09-27 Preparation of hydrosols, especially silica hydrosols
BE704383D BE704383A (en) 1966-09-30 1967-09-27
JP6267067A JPS4620137B1 (en) 1966-09-30 1967-09-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB43795/66A GB1143019A (en) 1966-09-30 1966-09-30 Production of sols

Publications (1)

Publication Number Publication Date
GB1143019A true GB1143019A (en) 1969-02-19

Family

ID=10430338

Family Applications (1)

Application Number Title Priority Date Filing Date
GB43795/66A Expired GB1143019A (en) 1966-09-30 1966-09-30 Production of sols

Country Status (6)

Country Link
JP (1) JPS4620137B1 (en)
BE (1) BE704383A (en)
ES (1) ES345420A1 (en)
FR (1) FR1547602A (en)
GB (1) GB1143019A (en)
NL (1) NL6712898A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5815022A (en) * 1981-07-13 1983-01-28 Asahi Denka Kogyo Kk Manufacture of silica sol

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003083212A1 (en) * 2002-04-03 2003-10-09 Seiko Pmc Corporation Method for producing paper and agent for improving yield

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5815022A (en) * 1981-07-13 1983-01-28 Asahi Denka Kogyo Kk Manufacture of silica sol
JPH0123412B2 (en) * 1981-07-13 1989-05-02 Asahi Denka Kogyo Kk

Also Published As

Publication number Publication date
NL6712898A (en) 1968-04-01
FR1547602A (en) 1968-11-29
DE1667622B2 (en) 1975-09-04
DE1667622A1 (en) 1972-04-20
ES345420A1 (en) 1969-11-01
JPS4620137B1 (en) 1971-06-05
BE704383A (en) 1968-03-27

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