Appeal No. 1996-2253 Page 2
Application No. 08/199,907
BACKGROUND
The appellant's invention relates to a process for
preparing a pillared phyllosilicate clay, the pillared clay
product of the process, a process of activating the pillared
clay, and a catalyst system made by the process of activation.
Claim 1 and 2 are representative of the subject matter on
appeal and are reproduced below:
Claim 1. A process for preparing a pillared phyllosilicate
clay which comprises:
(a) preparing a hydrolyzed first solution by dissolving
a chromium salt and a base in water, heating said first
solution to a temperature in the range of about 20°C to about
100°C while stirring continuously until the solution reaches a
PH in the range of about 1.5 to about 2.5 and thereby
producing a master batch;
(b) diluting said master batch with water to produce a
diluted second solution and heating said diluted second
solution to produce a heated second solution to produce a
heated second solution;
(c) adding a solid phyllosilicate clay selected from the
group consisting of dioctahedral and trioctahedral smectites
to said heated second solution, and continuing heating;
(d) recovering said pillared phyllosilicate clay; and
(e) drying said pillared phyllosilicate clay to form a
first product.
Claim 2. A product according to the process of claim 1.
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