Claims
- 1. A solid composition comprising an organophilic clay dispersed in a water-permeable superabsorbent polymer matrix, wherein said organophilic clay is a reaction product of a clay selected from the group consisting of naturally occurring and synthetic montmorillonite, bentonite, beidellite, hectorite, saponite and stevensite with a long chain organic quaternary ammonium compound.
- 2. The composition of claim 1 wherein said superabsorbent polymer is a cross-linked polymer of an unsaturated carboxylic acid.
- 3. The composition of claim 2 wherein said unsaturated carboxylic acid is acrylic acid.
- 4. The composition of claim 1 wherein said superabsorbent polymer is a cross-linked polymer of an amino acid.
- 5. The composition of claim 4 wherein said amino acid is aspartic acid.
- 6. The composition of claim 1 wherein said organophilic clay is present in an amount of about 3% to about 50% by weight.
- 7. The composition of claim 1 wherein said organophilic clay is present in an amount of about 3% by weight to about 20% by weight.
- 8. The composition of claim 1 wherein said organophilic clay is present in an amount of about 3% by weight to about 10% by weight.
- 9. The composition of claim 1 wherein said organophilic clay is activated.
- 10. The composition of claim 1 wherein said organophilic clay is a reaction product of bentonite with a long chain organic quaternary ammonium compound.
- 11. The composition of claim 10 wherein said organophilic clay is activated.
- 12. The composition of claim 10 wherein said organophilic clay is quaternium 18 bentonite.
- 13. The composition of claim 12 wherein said quaternium 18 bentonite is activated.
RELATIONSHIP TO OTHER APPLICATIONS
This application is a divisional of copending U.S. application Ser. No. 09/066,649, filed on Apr. 27, 1998, which is a divisional of U.S. application Ser. No. 08/631,119, filed Apr. 12, 1996, now U.S. Pat. No. 5,869,033, issued Feb. 9, 1999.
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