Method for producing polyacrylic acid (salt)-based water-absorbent resin
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United States of America Patent
Stats
-
Jan 16, 2018
Grant Date -
Feb 16, 2017
app pub date -
Apr 24, 2015
filing date -
Apr 25, 2014
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method for producing polyacrylic acid (salt)-based water-absorbing resin includes a step of polymerizing an acrylic acid (salt)-based aqueous monomer solution, the polymerization step involving use of a polymerization reaction apparatus including a polymerization reaction unit covered with a casing, the polymerization step involving a polymerization reaction under internal pressure of the polymerization reaction unit, the internal pressure being slightly reduced and having a pressure reduction level of more than 0 kPa and not more than 10 kPa relative to the ambient pressure at the periphery of the polymerization reaction unit.
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International Classification(s)
- 2015 Application Filing Year
- C08F Class
- 2246 Applications Filed
- 1854 Patents Issued To-Date
- 82.55 % Issued To-Date
Cited Art Landscape
Patent Citation Ranking
- 0 Citation Count
- C08F Class
- 0 % this patent is cited more than
- 7 Age
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