Claims
- 1. A method of treating a once-dried water-insoluble superabsorbent material comprising heating the once-dried water-insoluble superabsorbent material at a temperature of about 125.degree. C. or greater for a time sufficient to increase the two-minute Absorbency Under Load of the superabsorbent material at least about 1 gram per gram.
- 2. The method of claim 1 wherein the temperature is about 140.degree. C. or greater.
- 3. The method of claim 1 wherein the temperature is about 150.degree. C. or greater.
- 4. The method of claim 1 wherein the temperature is about 160.degree. C. or greater.
- 5. The method of claim 1 wherein the temperature is about 170.degree. C. or greater.
- 6. The method of claim 1 wherein the temperature is about 180.degree. C. or greater.
- 7. The method of claim 1 wherein the temperature is about 190.degree. C. or greater.
- 8. The method of claim 1 wherein the temperature is about 200.degree. C. or greater.
- 9. The method of claim 1 wherein the temperature is about 210.degree. C. or greater.
- 10. The method of claim 1 wherein the temperature is from about 150.degree. C. to about 210.degree. C.
- 11. The method of claim 1 wherein the superabsorbent material is treated for about 5 minutes or less.
- 12. The method of claim 1 wherein the superabsorbent material is treated for about 10 minutes or less.
- 13. The method of claim 1 wherein the superabsorbent material is treated for about 20 minutes or less.
- 14. The method of claim 1 wherein the superabsorbent material is treated for about 25 minutes or less.
- 15. The method of claim 1 wherein the superabsorbent material is treated for about 30 minutes or less.
- 16. The method of claim 1 wherein the superabsorbent material is treated for about 60 minutes or less.
- 17. The method of claim 1 wherein the superabsorbent material is treated at a temperature of from about 14O.degree. C. to about 210.degree. C. for from about 5 to about 60 minutes.
- 18. The method of claim 1 wherein the superabsorbent material is treated at a temperature of from about 170.degree. C. to about 210.degree. C. for about 20 minutes or less.
- 19. The method of claim 1 wherein the superabsorbent material is treated at a temperature of from about 170.degree. C. to about 190.degree. C. for about 20 minutes.
- 20. The method of claim 1 wherein the superabsorbent material is an alkali metal salt of poly(acrylic acid).
Parent Case Info
This is a continuation-in-part of copending application Ser. No. 07/745,319, filed on Aug. 15, 1991, now abandoned.
US Referenced Citations (12)
Foreign Referenced Citations (1)
Number |
Date |
Country |
WO9102552 |
Mar 1991 |
WOX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
745319 |
Aug 1991 |
|