Process for reactively coating particles
First Claim
1. A process which comprises contacting zeolite particles with a titanium or zirconium compound selected from the group consisting of halides, ethers, and esters in an anhydrous or substantially anhydrous inert medium so as to react said compound with the water of hydration of the zeolite and form a titania or zirconia coating on the particles.
3 Assignments
0 Petitions
Accused Products
Abstract
Coated particles having properties such as to make them suitable as replacements for titanium dioxide particles can be obtained by reacting a titanium or zirconium halide, ether, or ester with zeolite hydrate particles so as to coat the zeolite particles with titania or zirconia. The reaction is preferably conducted between a titanium compound, such as titanium tetrachloride, and the zeolite in an inert medium, such as anhydrous or substantially anhydrous air or a hydrocarbon.
-
Citations
17 Claims
- 1. A process which comprises contacting zeolite particles with a titanium or zirconium compound selected from the group consisting of halides, ethers, and esters in an anhydrous or substantially anhydrous inert medium so as to react said compound with the water of hydration of the zeolite and form a titania or zirconia coating on the particles.
Specification