| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a dispersant derived from a sulfite pulp waste liquid, particularly exerting excellent dispersibility when applying to cement, dyestuff and a slurry for oil-well drilling for the purpose of effective utilization of the sulfite pulp waste liquid containing plenty of lignin as a biomass resource from the aspect of environmental load reduction. <P>SOLUTION: There is provided a dispersant containing a modified substance of the sulfite pulp waste liquid which has the structural unit derived from an aqueous monomer. The dispersant expresses further excellent dispersibility by an anionic functional group and/or polyalkylene oxide chain contained in the modified substance of the sulfite pulp waste liquid. <P>COPYRIGHT: (C)2012,JPO&INPIT |
