Appeal No.2001-1865
Application 09/068,476
The subject matter on appeal is represented by claims 1 and
32, set forth below:
1. A method for producing crystalline alkali metal silicate
granules, comprising the following steps:
(1) preparing a mixture comprising:
(a) a crystalline alkali metal silicate containing at
least SiO2 and M2O, wherein M stands for an alkali metal atom,
and an SiO2/M2O molar ratio is from 1.5 to 2.6, wherein a maximum
pH value exceeds 11.0 at 20°C in a 0.1% by weight dispersion of
the crystalline alkali metal silicate and wherein the
crystalline alkali metal silicate has an ion exchange capacity
of 100 CaCO3 mg/g or more;
(b) a nonionic surfactant; and
(c) an acid precursor of an anionic surfactant capable of
having lamellar orientation; and
(2) granulating by tumbling the mixture obtained in step (1) in
an agitating mixer while increasing a bulk density at a
temperature sufficiently high enough to neutralize said acid
precursor, to hereby give crystalline alkali metal silicate
granules having bulk density of from 0.6 to 1.2 g/ml, wherein an
amount of component (a) in the mixture is 25% by weight or more.
32. A granular detergent composition for clothes washing having
high bulk density, comprising the following components:
I) surfactant components comprising:
A) a polyoxyethylene alkyl ether; and
B) an anionic surfactant capable of having a lamellar
orientation,
wherein a total amount of component A and component B is
80% by weight or more of the entire surfactant components,
and wherein the weight ratio of component A to component B is
A/B = 20/1 to 1/1;
-2-
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