Claims
- 1. A water-absorbent resin comprising a plurality of discrete polymer particles, with each of the polymer particles having a surface and an interior, wherein the interior of each of the polymer particles is cross-linked, the surface of each of the polymer particles is further cross-linked and the amount of elution of a water-soluble component from the surface of the resin is 1.82% by weight or less based on the resin.
- 2. A water-absorbent resin according to claim 1, which has a water-absorption capacity of 51 to 67 (g/g) in 30 minutes.
- 3. A water-absorbent resin according to claim 1, which has a suction force of 16.2 to 18.8(g).
- 4. A water-absorbent resin according to claim 1, wherein the elution of a water-soluble component from the surface of the resin is reduced in comparison with that of the resin before further cross-linking of the surface.
Priority Claims (3)
Number |
Date |
Country |
Kind |
63-158086 |
Jun 1988 |
JPX |
|
63-164940 |
Jul 1988 |
JPX |
|
63-255866 |
Oct 1988 |
JPX |
|
Parent Case Info
This application is a continuation of application Ser. No. 08/056,401 filed Jun. 23, 1993, now abandoned, which is a division of application Ser. No. 07/989,722, filed Dec. 11, 1992--U.S. Pat. No. 5,244,735, which is a continuation of application Ser. No. 07/694,607, filed May 2, 1991, now abandoned, which is a division of application Ser. No. 07/371,175, filed Jun. 26, 1989--U.S. Pat. No. 5,026,800.
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Entry |
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Divisions (2)
|
Number |
Date |
Country |
Parent |
989722 |
Dec 1992 |
|
Parent |
371175 |
Jun 1989 |
|
Continuations (2)
|
Number |
Date |
Country |
Parent |
056401 |
Jun 1993 |
|
Parent |
694607 |
May 1991 |
|