Process for producing water-absorbing resin powder
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United States of America Patent
Stats
-
May 22, 2018
Issued Date -
N/A
app pub date -
Feb 10, 2011
filing date -
Feb 10, 2010
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
Provided is a process for producing a water-absorbing resin powder which contains a given amount of water added thereto, has a low dust content, and has high material properties. When a water-absorbing resin powder which has undergone surface crosslinking is produced on an industrial scale, various problems concerning production are eliminated and a long-term stable operation is possible without causing a deterioration in the material properties of the resin. Even when the process is continued over a long period, the material properties are stabilized (decrease in standard deviation) or improved (improvement in AAP). The process for producing a water-absorbing resin comprises, in the following order, a first classification step for classifying a water-absorbing resin, a surface crosslinking step after the classification, a water addition step for adding water to the water-absorbing resin powder after or during the surface crosslinking, a second classification step, and a conveying step.
First Claim
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International Classification(s)
- 2011 Application Filing Year
- C08J Class
- 953 Applications Filed
- 733 Patents Issued To-Date
- 76.92 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C08J Class
- 0 % this patent is cited more than
- 7 Age
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