Process for preparing titanium dioxide in the form of spherical particles by hydrolysis of Ti(IV)
US4803064A · kind A · utility
9Cited by
9References
14Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 11, 1987 |
| Grant date | Feb 7, 1989 |
| Priority date | — |
| Expiry date | Sep 11, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/542
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A process for preparing titanium dioxide in the form of spherical particles having the particle size distribution indicated by dw/dn.ltoreq.2, by hydrolysis of strongly acid solutions of Ti(IV), wherein the molar ratio SO.sub.4.sup.= /Ti(IV) is at least 1.5, and in the presence of cationic polyelectrolytes having a molecular weight higher than 1 million and a ionicity of at least 3 milliequivalents per gram.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.