发明名称 |
Method for drying nonionic alkylene oxide-type water-soluble resin, method for packaging it, and method for transporting it |
摘要 |
To efficiently dry it, a nonionic alkylene oxide-type water-soluble resin is put into a container, then the container is degassed to a prescribed vacuum degree which is maintained while a dry gas having a dew point not higher than prescribed is introduced into the container at a rate not lower than prescribed. Minor volatiles are efficiently removed from the resin in an evaporation tank having a stirring blade. For protecting the dried resin from water, a dry gas is introduced into and air is purged from an empty packaging container whereafter the resin is charged into the container is sealed. By controlling solvent content and visocity of the resin and loading it into a temperature-controlled transportation container and/or unloading it out of the transportation container by the use of a pump, good subsquent processability of the resin and prevention of deterioration thereof are ensured.
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申请公布号 |
US7354984(B2) |
申请公布日期 |
2008.04.08 |
申请号 |
US20050062151 |
申请日期 |
2005.02.18 |
申请人 |
DAI-ICHI KOGYO SEIYAKU CO., LTD.;NIPPON SHOKUBAI CO., LTD. |
发明人 |
KONO MICHIYUKI;KIKUTA MANABU;TEZUKA MASAKI;TANAKA HIROSHI;YOKOHASHI TAKAO;NISHIHATA TAKAO;MURATA KAZUHIKO;TOBA TAKETO;TAMURA FUMIHIDE;KITADA RITSUO |
分类号 |
C08G18/08;C08G65/02;C08G65/30;C08G65/34;C08G65/46 |
主分类号 |
C08G18/08 |
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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