GB492552A - Method of manufacturing neutral colloidal calcium carbonate - Google Patents

Method of manufacturing neutral colloidal calcium carbonate

Info

Publication number
GB492552A
GB492552A GB2078637A GB2078637A GB492552A GB 492552 A GB492552 A GB 492552A GB 2078637 A GB2078637 A GB 2078637A GB 2078637 A GB2078637 A GB 2078637A GB 492552 A GB492552 A GB 492552A
Authority
GB
United Kingdom
Prior art keywords
carbonate
per cent
converted
carbon dioxide
castor oil
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
GB2078637A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2078637A priority Critical patent/GB492552A/en
Publication of GB492552A publication Critical patent/GB492552A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/18—Carbonates
    • C01F11/182—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds
    • C01F11/183—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by an additive other than CaCO3-seeds the additive being an organic compound
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F11/00—Compounds of calcium, strontium, or barium
    • C01F11/18—Carbonates
    • C01F11/181—Preparation of calcium carbonate by carbonation of aqueous solutions and characterised by control of the carbonation conditions

Abstract

A colloidal suspension of neutral calcium carbonate is obtained by kneading calcium oxide with water while keeping the temperature below 50 DEG C. to prepare a milky solution containing 10-30 per cent of calcium hydroxide, which is then diluted to a density of 30 DEG B<\>ae. It is then converted into basic carbonate by passing in a gas containing 15-50 per cent of carbon dioxide at a temperature below 35 DEG C. and continuing the action of the carbon dioxide until the basic carbonate is converted into neutral carbonate. Small quantities of acids, alkalis, water - soluble salts or polyhydric alcohols may be added during the slaking of the calcium oxide. Protective colloids, e.g. 1-20 per cent by weight of lecithin, castor oil soap, sulphonated castor oil soap, sulphonated oils, casein or an emulsion of rosin or synthetic resin may be added to the final dispersion, which may be dried. The product may be used to reinforce rubber, as a coating or filling material for paper, in sizes or as a toilet powder.
GB2078637A 1937-07-27 1937-07-27 Method of manufacturing neutral colloidal calcium carbonate Expired GB492552A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2078637A GB492552A (en) 1937-07-27 1937-07-27 Method of manufacturing neutral colloidal calcium carbonate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2078637A GB492552A (en) 1937-07-27 1937-07-27 Method of manufacturing neutral colloidal calcium carbonate

Publications (1)

Publication Number Publication Date
GB492552A true GB492552A (en) 1938-09-22

Family

ID=10151653

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2078637A Expired GB492552A (en) 1937-07-27 1937-07-27 Method of manufacturing neutral colloidal calcium carbonate

Country Status (1)

Country Link
GB (1) GB492552A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4367207A (en) * 1980-12-18 1983-01-04 Pfizer Inc. Process for the preparation of finely divided precipitated calcium carbonate

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4367207A (en) * 1980-12-18 1983-01-04 Pfizer Inc. Process for the preparation of finely divided precipitated calcium carbonate

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