A Novel Way to Change Color of Allphatle Sulfonated Resin

The color of allphatle sulfonated acetone-formaldehyde resin has been changed by a novel way of mixing with blue and green dye. The UV spectroscopy and colorimeter were used to characterize the color change. And the water reducing performance of the resin was investigated. The results indicated that the ratio of SAF water reducer to blue dye was 10:5, and that to green dye was 10:4, the color of the SAF water reducer can be efficiently changed. The fluidity of cement paste of SAF water reducer added the blue dye was improved, and the water-reducing rate was almost not influenced by addition of dyes.