| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a means capable of further improving various performances in a cement admixture compared with the conventional technique. <P>SOLUTION: The method for producing a hydrophilic polymer includes a reaction between an unsaturated acid based compound expressed by chemical formula 1 and an unsaturated (poly)ether compound expressed by chemical formula 2 in a reactor. Then, the method includes: a step A of charging an unsaturated acid based compound to the reactor;a step B of charging an unsaturated (poly)ether compound to the reactor; and; a step X of increasing the temperature of the contents in the reactor. When the step A and/or B is performed, the step X is simultaneously performed (other than the case where the step X is started when the contents are composed only of an unsaturated acid based compound). <P>COPYRIGHT: (C)2012,JPO&INPIT |
