POSTTREATED TITANIUM DIOXIDE AND ITS MANUFACTURE

Title:

POSTTREATED TITANIUM DIOXIDE AND ITS MANUFACTURE

Document Type and Number:

Japanese Patent JPS56112968

Kind Code:

A

Abstract:

This invention concerns a new product consisting of TiO₂ particles having pigmentary granulometric and morphological characteristics and being provided with a chemically reactive coating comprising a mixture of oxide and oxychloride selected from Al₂O₃ and AIOCI, SiO₂ and SiOCl₂, and ZrO₂ and ZrOCl₂.These particles are prepared as follows: the surface of the TiO_z particles is activated in a moving bed by means of a thermal treatment with an anhydrous gas at 400°-600°C, and the particles are then made to react in a moving bed at 350°C to 600°C, in the presence of a carrier gas, with an inorganic chloride selected from AlCl₃, SiCl₄ and ZrCl₄.This new product is useful, for example for preparing TiO₂ pigments coated with organic substances which impart to the pigments an affinity for organic vehicles, for example in paints.

Inventors:

KARURO SUKOTSUTEI
RENATO KASHIMIRO PACHIE
SERUJIO KARURA
ERIO SANTACHIESARIA

Application Number:

JP126381A

Publication Date:

September 05, 1981

Filing Date:

January 09, 1981

Export Citation:

Click for automatic bibliography generation Help

Assignee:

MONTEDISON SPA

International Classes:

C09C1/36; C09C1/00; (IPC1-7): C09C1/36

Previous Patent: JPS56112967

Next Patent: JPS56112969