Resin Color Developer

Resin Color Developer RD9870A

RD9870A is a resin color developer which belongs to zinc salicylate type. It is used for carbonless copy paper (CF or CFB). It enjoys the following advantages: rapid color development at low temperature,high coating whiteness,good color intensity and slow light-resistant aging.RD9870A is an ideal resin color developer of a new generation.

Feaure:

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

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

3.Relatively thinner coaring.

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 RD9870A is used to prepare CF paste, first add water,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 to 9.5). Finally add resin and SBR latex and stir for another 15-20 minutes. The final PH value of CF paste is around 7.0-8.0.

2.Sodium polyacry late (∑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.

Technical index:

Solid content(%)≥45

Viscosity (at 25℃,mpa.s)200-600

Mean particle diameter(um)≤1.5

PH value4.0-6.0

Zinc content(%)≥4.5

Suggestion:

The emulsion will be easily damaged when temperature is higher than 60℃.

Storage requirement:

√Violent collision or edge tool cut should be avoided in order to prevent leakage;

√Storage temperature:not lower than 5℃.