# US 10,368,526 B2 · Absorbent clumping animal litter compositions

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- Number: US 10,368,526 B2
- Document ID: US10368526B2
- Status: Granted
- Kind: B2
- Application number: 14/897,939
- Filed: 2013-09-26
- Published: 2016-05-19
- Granted: 2019-08-06
- Earliest claimed: 2013-09-26
- Assignees: Halliburton Energy Services, Inc.
- Applicants: Halliburton Energy Services, Inc.
- Inventors: Thomas S Cortner; Jim Mabrey; Eric Frantz
- Web page: https://patentgrep.com/patent/US10368526B2

## CPC

- A01K 1/0154: {comprising inorganic material}
- A01K 1/0155: {comprising organic material}
- A01K: ANIMAL HUSBANDRY; AVICULTURE; APICULTURE; PISCICULTURE; FISHING; REARING OR BREEDING ANIMALS, NOT OTHERWISE PROVIDED FOR; NEW BREEDS OF ANIMALS

## Abstract

Various embodiments disclosed relate to absorbent clumping animal litter compositions, and to methods of using and making the same. In some embodiments, the present invention provides an absorbent clumping animal litter composition including an absorbent component and a pumice component.

## Claims

### Claim 1

An absorbent clumping animal litter composition comprising:
an absorbent component, the absorbent component comprising a bentonite component, wherein the bentonite component has a bulk compacted density of about 40 lb/ft3 to about 95 lb/ft3; and
a pumice component, wherein the pumice component has a bulk density of about 10 lb/ft3 to about 40 lb/ft3.

### Claim 2 (depends on 1)

The animal litter composition of claim 1, wherein the animal litter composition has a compacted bulk density of about 35 lb/ft3 to about 70 lb/ft3.

### Claim 3 (depends on 1)

The animal litter composition of claim 1, wherein about 30 wt % to about 90 wt % of the animal litter composition is the bentonite component.

### Claim 4 (depends on 1)

The animal litter composition of claim 1, wherein the weight ratio of the absorbent component to the pumice component is about 1:1 to about 5:1.

### Claim 5 (depends on 1)

The animal litter composition of claim 1, wherein about 5 wt % to about 60 wt % of the animal litter composition is the pumice component.

### Claim 6 (depends on 1)

The animal litter composition of claim 1, wherein about 70 wt % to about 95 wt % of the pumice component is amorphous metal silicates, having a formula MxOy.SiO2, wherein M is independently Al, Ca, Mg, Na, Fe, or K.

### Claim 7 (depends on 1)

The animal litter composition of claim 1, wherein about 55 wt % to about 90 wt % of the pumice component comprises SiO2.

### Claim 8 (depends on 1)

The animal litter composition of claim 1, wherein the weight ratio of the pumice component to the absorbent component is about 0.1:1 to about 0.8:1.

### Claim 9 (depends on 1)

The animal litter composition of claim 1, further comprising an amorphous silica component.

### Claim 10 (depends on 9)

The animal litter composition of claim 9, wherein about 0.01 wt % to about 20 wt % of the animal litter composition is the amorphous silica component.

### Claim 11 (depends on 9)

The animal litter composition of claim 9, wherein about 0.001 wt % to about 8 wt % of the amorphous silica component is sodium sulfate.

### Claim 12 (depends on 9)

The animal litter composition of claim 9, wherein the amorphous silica component has a surface area of about 100 m2/g to about 160 m2/g.

### Claim 13 (depends on 9)

The animal litter composition of claim 9, wherein the amorphous silica component has a density of about 5 lb/ft3 to about 35 lb/ft3.

### Claim 14 (depends on 9)

The animal litter composition of claim 9, wherein a weight ratio of the amorphous silica component to a combination of the absorbent component and the pumice component is about 0.001:1 to about 0.5:1.

### Claim 15 (depends on 1)

The animal litter composition of claim 1, wherein the animal litter composition further comprises at least one of an antimicrobial agent, odor absorber, odor inhibitor, odor-releasing agent, cellulosic material, filler, binder, density-modifier, coloring agent, bleach, lightener, fragrance, health-indicating material, nonstick release agent, de-dusting agent, gel, crosslinked gel, crosslinking agent, and a superabsorbent material.

### Claim 16

An absorbent clumping animal litter composition comprising:
an absorbent component, the absorbent component comprising a bentonite component, wherein the bentonite component is present in an amount ranging from about 60 wt % to about 80 wt % by weight of the animal litter composition, wherein the bentonite component comprises SiO2 in an amount ranging from about 55 wt % to about 90 wt % by weight of the bentonite;
a pumice component, wherein the weight ratio of the absorbent component to the pumice component is about 1:1 to about 5:1; and
an amorphous silica component, wherein the amorphous silica component is present in an amount of about 0.01 wt % to about 8 wt % by weight of the animal litter composition, wherein the amorphous silica component comprises silica in an amount ranging from about 70 wt % to about 100 wt % by weight amorphous silica component; and wherein the animal litter composition has a compacted bulk density of about 35 lb/ft3 to about 70 lb/ft3.