Claims
- 1. A producing method of a hydrophilic resin characterized in that a hydrophilic polymer is mixed with a powdery denaturant substance made from a liquid denaturant substance.
- 2. The producing method of claim 1, wherein said liquid denaturant substance is made into powders by being mixed with powders of a water-insoluble compound.
- 3. The producing method of claim 1, wherein said liquid denaturant substance is made into powders by being cooled to or below a melting point of said liquid denaturant substance and turned into a solid state.
- 4. The producing method of claim 1, wherein a mixture of said hydrophilic polymer and said powdery denaturant substance is heated.
- 5. The producing method of claim 1, wherein an aqueous liquid in a liquid or gaseous state is added to a mixture of said hydrophilic polymer and said powdery denaturant substance first, and thence a resulting mixture is heated.
- 6. The producing method of claim 1, wherein said hydrophilic polymer is an absorbent resin having an acidic group.
- 7. The producing method of claim 1, wherein said liquid denaturant substance contains a crosslinking agent.
- 8. The producing method of claim 7, wherein said crosslinking agent contains a polyamine whose weight average molecular weight is 2,000 or greater.
Priority Claims (2)
Number |
Date |
Country |
Kind |
8-17894 |
Feb 1996 |
JP |
|
8-25552 |
Feb 1996 |
JP |
|
Parent Case Info
This application is a division of application Ser. No. 08/930,272, filed Sep. 29, 1997, now U.S. Pat. No. 6,150,459 which is a 371 of PCT/JP97/00229 filed Jan. 31, 1997.
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