发明名称 |
POLYACRYLIC ACID (SALT) WATER-ABSORBING RESIN AND MANUFACTURING METHOD THEREFOR |
摘要 |
<p>The present invention provides a method for manufacturing a water-absorbing resin which (i) is made of acrylic acid that is suitable for mass production of water-absorbing resin and (ii) has an excellent water-absorbing property. In the method, a polyacrylic acid (salt)-based water-absorbing resin is manufactured by sequentially carrying out predetermined monomer preparing step, polymerization step, drying step, and surface crosslinking step. An acetic acid concentration in acrylic acid or the like supplied in the monomer preparing step is in a range of 300 ppm to 10000 ppm on the acrylic acid basis, and an acetic acid concentration lowering rate defined by a predetermined formula is 35% or higher.</p> |
申请公布号 |
KR20140125420(A) |
申请公布日期 |
2014.10.28 |
申请号 |
KR20147025126 |
申请日期 |
2013.02.18 |
申请人 |
NIPPON SHOKUBAI CO., LTD. |
发明人 |
MATSUMOTO SATOSHI;MIYAMOTO TAKASHI;SAKAI TOYOFUMI;ISHII YOSHITAKE;ISHIZAKI KUNIHIKO |
分类号 |
C08F20/06;C08F2/10;C08F6/00;C08J3/075;C08J3/12;C08J3/24 |
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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