GB533227A - Improvements in the production of titanium pigments - Google Patents

Improvements in the production of titanium pigments

Info

Publication number
GB533227A
GB533227A GB2273539A GB2273539A GB533227A GB 533227 A GB533227 A GB 533227A GB 2273539 A GB2273539 A GB 2273539A GB 2273539 A GB2273539 A GB 2273539A GB 533227 A GB533227 A GB 533227A
Authority
GB
United Kingdom
Prior art keywords
seeds
titanium
precipitate
oxide
hydrolysis
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
GB2273539A
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.)
Ver Chemische & Metallurgische
Original Assignee
Ver Chemische & Metallurgische
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 Ver Chemische & Metallurgische filed Critical Ver Chemische & Metallurgische
Priority to GB2273539A priority Critical patent/GB533227A/en
Publication of GB533227A publication Critical patent/GB533227A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G23/00—Compounds of titanium
    • C01G23/04—Oxides; Hydroxides
    • C01G23/047—Titanium dioxide
    • C01G23/053—Producing by wet processes, e.g. hydrolysing titanium salts
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G23/00—Compounds of titanium
    • C01G23/04—Oxides; Hydroxides
    • C01G23/047—Titanium dioxide
    • C01G23/053—Producing by wet processes, e.g. hydrolysing titanium salts
    • C01G23/0532—Producing by wet processes, e.g. hydrolysing titanium salts by hydrolysing sulfate-containing salts
    • C01G23/0534—Producing by wet processes, e.g. hydrolysing titanium salts by hydrolysing sulfate-containing salts in the presence of seeds

Abstract

533,227. Titanium oxide. NATIONAL TITANIUM PIGMENTS, Ltd. (Verein fur Chemische und Metallurgische Produktion). Aug. 5, 1939, No. 22735. [Class 1 (iii)] Titanium oxide which after calcination has a rutile structure is made by hydrolysis of titanium sulphate by means of "seeds" of oxide or hydroxide of a metal of the fourth group of the periodic system wherein the seeds are made by precipitating the oxide or hydroxide from a salt solution by adding an alkaline reagent, freeing the precipitate from sulphate ions if present, and peptizing the precipitate by warming with a strong mineral acid other than sulphuric acid. Before use the peptized seeds may be coagulated by alkali, washed free from electrolytes, and used as a sol or gel. Preferably the hydrolysis and the production of the seeds take place in the presence of phosphoric acid or a phosphate. The seeds .may be produced from a part of a titanium sulphate solution to be hydrolysed by adding an alkali until the pH is about 3-6, washing thoroughly and peptizing with hydrochloric acid. In an example, a solution of ilmenite in sulphuric acid containing 1 per cent. of phosphoric acid is treated with caustic soda to pH 3-6; the precipitate is washed and stirred with hydrochloric acid at 90‹C. The product is then added to the original titanium sulphate solution and boiled until hydrolysis is complete. The precipitate is calcined at 700‹C. Specification 405,669 is referred to.
GB2273539A 1939-08-05 1939-08-05 Improvements in the production of titanium pigments Expired GB533227A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2273539A GB533227A (en) 1939-08-05 1939-08-05 Improvements in the production of titanium pigments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2273539A GB533227A (en) 1939-08-05 1939-08-05 Improvements in the production of titanium pigments

Publications (1)

Publication Number Publication Date
GB533227A true GB533227A (en) 1941-02-10

Family

ID=10184256

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2273539A Expired GB533227A (en) 1939-08-05 1939-08-05 Improvements in the production of titanium pigments

Country Status (1)

Country Link
GB (1) GB533227A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2427165A (en) * 1944-01-29 1947-09-09 Jr Charles A Tanner Manufacture of rutile
US2433597A (en) * 1942-01-31 1947-12-30 American Cyanamid Co Methods of preparing rutile seeding agents
US2479637A (en) * 1942-01-09 1949-08-23 Du Pont Titanium oxide pigment production
US2488755A (en) * 1942-01-31 1949-11-22 American Cyanamid Co Rutile seed manufacture
US2494492A (en) * 1942-01-31 1950-01-10 American Cyanamid Co Production of rutile titanium dioxide
US2507729A (en) * 1943-09-11 1950-05-16 Du Pont Titanium oxide pigment production
US2533208A (en) * 1944-08-22 1950-12-12 Allan Benjamin Wilson Electrolytic production of gelatinous titanium hydrate nuclei

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479637A (en) * 1942-01-09 1949-08-23 Du Pont Titanium oxide pigment production
US2433597A (en) * 1942-01-31 1947-12-30 American Cyanamid Co Methods of preparing rutile seeding agents
US2488755A (en) * 1942-01-31 1949-11-22 American Cyanamid Co Rutile seed manufacture
US2494492A (en) * 1942-01-31 1950-01-10 American Cyanamid Co Production of rutile titanium dioxide
US2507729A (en) * 1943-09-11 1950-05-16 Du Pont Titanium oxide pigment production
US2427165A (en) * 1944-01-29 1947-09-09 Jr Charles A Tanner Manufacture of rutile
US2533208A (en) * 1944-08-22 1950-12-12 Allan Benjamin Wilson Electrolytic production of gelatinous titanium hydrate nuclei

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