发明名称 |
POLYACRYLIC ACID SALT-BASED WATER ABSORBENT RESIN AND METHOD FOR PRODUCING SAME |
摘要 |
<p>A method for producing a polyacrylic acid (salt)-based water absorbent resin, sequentially including the steps of: storing or producing acrylic acid; mixing acrylic acid containing a polymerization inhibitor with water, a crosslinking agent, and optionally, a basic composition, and/or neutralizing them, to prepare an aqueous monomer solution; polymerizing the aqueous monomer solution; drying an obtained water-containing gel-like crosslinked polymer; and optionally carrying out surface crosslinking, wherein the acrylic acid containing the polymerization inhibitor has a water content of not higher than 1,000 ppm (by mass; the same applies hereinafter), and/or the aqueous monomer solution has a formic acid content of 1 to 700 ppm, relative to the monomer.</p> |
申请公布号 |
EP2484702(A1) |
申请公布日期 |
2012.08.08 |
申请号 |
EP20100820690 |
申请日期 |
2010.09.30 |
申请人 |
NIPPON SHOKUBAI CO., LTD. |
发明人 |
MATSUMOTO, SATOSHI;ISHIZAKI, KUNIHIKO;TORII, KAZUSHI;FUJINO, SHIN-ICHI;SAKAMOTO, KAZUHIKO |
分类号 |
C08F20/06;C08F2/00;C08F6/12 |
主分类号 |
C08F20/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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