Dyestuff Selection - manufacturers' suggestion - an important phase in processing

Selecting the proper trichromatic combination of 3 dyes that have almost similar substantivity, exhaustion and fixation properties is very important for getting the best reproducible shade matching.

Nuchem Dyestuffs P Ltd., is making the following suggestions for its customers.


General guidelines:

LIGHT SHADES	MEDIUM SHADES	DARK SHADES
For Good Light fastness and levelness: Cotfix Yellow CA Cotfix Red CA Cotfix Blue CA Cotfix Amber CA Cotfix Yellow FN2R Cotfix Red FN2BL Cotfix Blue FNR Cotfix Blue FNG For all round optimum fastness: Cotfix Yellow RR Cotfix Red RR Cotfix Blue RR Cotfix Yellow 5GL Cotfix Yellow F3R Cotfix Red F3B Cotfix Blue BB Cotfix Blue BRN	For Good Light fastness and levelness: Cotfix Yellow FN2R Cotfix Red FN2BL Cotfix Blue FNR Cotfix Blue FNG For all round optimum fastness: Cotfix Yellow RGB Cotfix Red RGB Cotfix Blue RGB Cotfix Navy RGB Cotfix Caramine RGB Cotfix Yellow NL-2R Cotfix Red NL-5B Cotfix Blue NL-BR Cotfix Navy NL-R	Dark Shades: Cotfix Yellow RGB Cotfix Red RGB Cotfix Blue RGB Cotfix Navy RGB Cotfix Caramine RGB Cotfix Ultra Yellow RGB Cotfix Ultra Red RGB Cotfix Yellow D Cotfix Red D Cotfix Navy DB Cotfix Orange D Cotfix Deep Red DB Cotfix Dark Blue DB

This guideline is only a general thumb rule and one should not come to a conclusion that this is the ultimate criteria. The dyer, based on his final requirement or end use of the dyed material, has to select proper group of dyestuff.

CA, FN and NL series would meet the wide range of fastness requirements of the industry.

RGB and Ultra RGB series are most suitable for medium and dark shades, where one would expect no metamerism.

W series are exceptionally suitable for wide range of dark shades, where economy is of prime importance. With series generally one can dye uniforms like dark browns, Olives and Dull blues.

D series posses exceptionally all sound fastness parameters and are economical too for dyeing dark and very dark shades.

HF series produce exceptionally bright shades and possess very high tinctorial values, most suitable for dyeing and printing, exhaust and CPB applications.

This classification is further elaborated as below:

1.     Lemon Yellow

2.     Yellow, Golden Yellow

3.     Orange, Scarlet

4.     Red

5.     Wine, Maroon

6.     Violet

7.     Blue, Royal

8.     Turquoise, Bright Green

9.     Navy Blue, Black

10.  Beige, Light Blue, Grey

11.  Brown

12.  Dark Green, Olive

 

Lemon Yellow

Cotfix Yellow 5GL

Cotfix Yellow ME4GL

Cotfix Yellow F4G

Yellow, Golden Yellow

Cotfix Golden Yellow F3R

Cotfix Red F3B

Cotfix Blue BB

Cotfix Yellow GR

Cotfix Orange 2R

Cotfix Orange 3R

Cotfix Orange ME2RL 

Orange, Scarlet

Cotfix Orange 3R

Cotfix Orange ME2RL

Cotfix  Oange 2R

Cotfix Yellow F4GL

Cotfix Yellow GR

Cotfix G.Yellow RNL 150%

Cotfix Red F3B

Cotfix Navy Blue BFN

 Red

Cotfix Yellow GR

Cotfix G.Yellow RNL

Cotfix Orange 3R

Cotfix Orange 2R

Cotfix Orange D

Cotfix Deep Red DB

Cotfix Red D

Cotfix Scarlet HF-3G

Cotfix Orange HF-2GL

Cotfix Blue BB

Wine, Maroon

Cotfix Yellow GR

Cotfix Yellow RNL-150%

Cotfix Deep Red DB

Cotfix Caramine RGB

Cotfix Ultra Red RGB

Cotfix Navy Blue RGB

Cotfix Navy Blue BFN

Cotfix Blue R SPL.

 Violet

Cotfix Golden Yellow F3R

Cotfix Orange ME2RL

Cotfix Red ME6BL

Cotfix Red ME4BL

Cotfix Violet 5R

Cotfix Navy Blue R SPL

Cotfix Navy Blue BFN

Cotfix Blue BRN

Blue, Royal

Cotfix Blue BRN

Cotfix Navy Blue BFN

Cotfix Golden Yellow R 150

Cotfix T/Q Blue H2GP, G

Cotfix Blue R spl

Cotfix Blue BB

Turquoise, Bright Green

Cotfix Yellow F4G

Cotfix Golden Yellow F3R

Cotfix Yellow ME4GL

Cotfix Blue R SPL

Cotfix T/Q Blue H2GP

Cotfix Blue BB

Navy, Black

Cotfix Golden Yellow R 150

Cotfix Red ME6BL

Cotfix Red RGB

Cotfix Red ME4BL

Cotfix Navy Blue R spl

Cotfix Navy Blue BFN

Cotfix Black ECO

Cotfix Black WNN

Cotfix Supra Black G

Cotfix Black B 133%

Beige, Light Blue, Grey

Cotfix Blue BRN

Cotfix Yellow RR

Cotfix Red RR

Cotfix Blue RR

Cotfix Yellow CA

Cotfix Red CA

Cotfix Blue CA

Cotfix Red HF-G

Brown

Cotfix Golden Yellow WR

Cotfix Red WB

Cotfix Navy Blue WB

Cotfix Orange W3R

Cotfix Dark Blue WR

Cotfix Yellow RGB

Cotfix Red RGB

Cotfix Blue RGB

Cotfix Navy RGB

Cotfix Caramine RGB

Cotfix Ultra Yellow RGB

Cotfix Ultra Red RGB

Cotfix Yellow D

Cotfix Red D

Cotfix Navy DB

Cotfix Orange D

Cotfix Deep Red DB

Cotfix Dark Blue DB

 Dark Green, Olive

Cotfix yellow RGB

Cotfix Red RGB

Cotfix Blue RGB

Cotfix Navy RGB

Cotfix Yellow D 

Cotfix Red D

Cotfix Navy DB

Cotfix Orange D

Cotfix Deep Red DB

Cotfix Dark Blue DB