RF118 is a color developer of zinc salicylate resin. It has the advantages of rapid color developing, excellent performance at the low temperature and good resistance to aging. Besides, its viscosity is low and its formula is convenient. So it is widely used in carbonless copying paper industry.

Note: The partial diameter distribution in the standard specially refers to cumulative frequency of 0-1μm.

The recommended use method:

The preparation process of the CF paste: Fill water into the tank, and then add dispersant and solid materials while stirring. Stir at the high speed till the mixture is homogeneously distributed. And then decrease the stirring speed, then add the prepared starch adhesive and stir for 15-20 min. Adjust pH value to the range of 8.0-8.5. And then slowly add color developer. Stir for the certain time till the color developer is homogeneously distributed. Slowly add SBR latex, and stir for 15-20min. The pH value of the final CF paste shall be 7.0-7.5.