Nippon Kayaku (Thailand) CO., LTD.
Technical Service Center「Main features of Kayacion Brown CF-4R 150 and Kayacion Grey CF-2B 150」
・ KCN Brown CF-4R 150 and KCN Grey CF-2B 150 is already available for purchase and used by dyeing
factories in China and Asia, and have been well received by customers.
・ When dyeing critical shades or mixed shades such as brown or grey with trichromatic colors of different
dyeability, reproducibility is often a problem both in laboratory and in production. The changes in liquor
ratio, dyeing temperature, salt amount, temperature of alkali addition is an important consideration forensuring reproducibility. The extent to which each component of the trichromatic colors affects the shade
due to these conditions will have an impact on the change in hue of the dyeing.
・ Nippon Kayaku has developed the KCN Brown CF-4R 150 and KCN Grey CF-2B 150 as a solution to thedyeing difficulties due to reproducibility issues mentioned above. The dyeability of KCN Brown CF-4R
150 and KCN Grey CF-2B 150 are also matched with KCN CF-COM series, allowing for shading withthese trichromatic colors with reproducibility.
・ The figure on the next page shows the color triangles for combination shades using KCN Brown CF-4R
150 and KCN Grey CF-2B 150 as the basis with the primary colors of the KCN CF-COM series. Variousshades can be produced with excellent reproducibility.

NIPPON KAYAKU (THAILAND) CO., LTD.
ADD: 13th Floor, Ramaland Building, 952 Rama IV road, Suriyawongse, Bangrak, Bangkok 10500
TEL: +66-2-235-2843 HP: http://www.kayakuth.co.th[1]NIPPON KAYAKU (THAILAND) CO., LTD.
ADD: 13th Floor, Ramaland Building, 952 Rama IV road, Suriyawongse, Bangrak, Bangkok 10500
TEL: +66-2-235-2843 HP: http://www.kayakuth.co.th[2]Furthermore, when the trichromatic colors of other products in the market with inferior reproducibility areused, it is possible to improve the reproducibility of the dyeing by using KCN Brown CF-4R 150 and KCN Grey
CF-2B 150 as the main dye. Because the reproducibility of KCN Brown CF-4R 150 and KCN Grey CF-2B 150 isexcellent, the reproducibility will be significantly improved compared to the reproducibility of only using thetrichromatic series with inferior reproducibility.
The data below shows the effect of liquor ratio on mixed shades of other company’s trichromatic combinations
and mixed shades of KCN Grey CF-2B 150 as the main dye with shading of other company’s trichromatic color.

Other Company
Yellow
RedBlue

0.240
0.144
0.625

KCN Grey CF-2B

1.000

Other Company
Yellow
RedBlue

KCN Grey CF-2B
Other Company
Yellow

Other Company
Yellow
RedBlue

0.386
0.118
0.503

0.800

KCN Grey CF-2B
Other CompanyRed

0.200

0.242
0.204
0.621

0.950
0.050

Other Company
Yellow
RedBlue

KCN Grey CF-2B
Other CompanyBlue

0.191
0.116
0.719

0.800
0.200

The improvement in reproducibility of using KCN Grey CF-2B 150 as the base color is shown in the dataabove.
For example, in the case of using only the low reproducibility trichromatic colors (upper row in the data above),the affinity of Red is relatively lower than yellow and blue, causing the greenish hue change when the liquor ratio
is changed.
On the other hand, when KCN Grey CF-2B 150 is used as the base with shading from the trichromatic colors,
the hue change due to the liquor ratio change is much smaller than using low reproducibility trichromatic colors
available in the market. Therefore, the reproducibility can be improved by using our KCN Grey CF-2B 150 andKCN Brown CF-4R 150 as a base dye.

NIPPON KAYAKU (THAILAND) CO., LTD.
ADD: 13th Floor, Ramaland Building, 952 Rama IV road, Suriyawongse, Bangrak, Bangkok 10500
TEL: +66-2-235-2843 HP: http://www.kayakuth.co.th[3]