Product Main

Specifications

RD9870 is the resin color developer of modified zinc salicylate with some structure characteristics of phenolic resin. It is used for carbonless copy paper (CF or CFB). It has great advantages in the rapid color developing, image density and ageing resistance. Compared with other serious products, RD9870 has notable speciality in simple application, convenient ingredient and good adaptability. So it is widely used in the industry of carbonless copying paper at domestic and overseas market.

Characteristic:

1. Rapid color development at low temperature. Especially when the temperature is below 10 C, this advantage still exists.

2. Suitable for any CF compositions consisting of resin or clay-resin.

3. Relatively thinner coating.

4. The rheological property and thixotropy of CF paste are good, suitable for any coating method.

5. Good stability when stored.

Application method:

1. When RD9870 is used to prepare CF paste, add water firstly, then put dispersant and solid material into the tank and stir at the speed of 1000r/min for 20 to 30 minutes. Then reduce the stirring speed to 500r/min and add starch gum, stir for 15-20 minutes (Note: Adjust the pH value to8.0~8.5). Finally add the resin color developer and SBR latex and stir for another 15-20 minutes. The final pH value of CF paste is around 7.0-7.5.

2. Sodium polyacrylate (∑ 5000) is recommended for the dispersant.

3. Fully water-soluble active dye is recommended when coating color paper.

4. Quantity of resin applied can be reduced or increased according the requirements of the user for color intensity.