dyes

[shr]

hi!

any one has dyes mixing recepie?

for getting different shades.

specially for acid dyes,direct & reactive dyes.

[Horza2002]

Do you mean having several coloured dyes and mixing them to give you a nother color, or making a compound that has a certain color?

[shr]

@horza2002: thanks horza2002 for your reply.yes ,how to get different shades for cotton,leather,silk.

by adding different colors.

[Horza2002]

Well, that is a very broad question. There are literally thousands of dyes and are all based on a different strucutre to the molecule that give rise to the colour. If you look at that wiki link below, it has pages and pages of information about all the different dyes there are:

 

http://en.wikipedia.org/wiki/Dye

 

For an example, I just picked azo dyes to talk about here as I've used some of these before. These dyes usually contain an azo linkage (-N=N-) between aromatic rings to give a highly conjugated pi-system. By subtley chaning the properties of this pi-system, you can alter the colour of dye is. According to Wiki, there are at least 60 different dyes, all with different colours that contain this azo group; ranging from blue all through the spetrum to red.

 

There are also several methods in which to apply the dye to the material as well; reactive dyes that form chemical bonds to the material, dispersion and others.

 

So in anwser to your question, the chances are there is a dye that will dye the material you want the desried colour without you having to mix several together. Also, depending on the functional groups present in the seperate due molecules, mixing them together might not be a good idea as they can react and loose their colour, alter the colour or simple just degrade.