Dyehouse

 

Surfactants / Wetting agents
Surfactants help in the wetting back of the wet blue in the dyehouse

Degreasers
Degreasers help remove grease or fats that may be present on the wet blue as a result of the wet blue coming into contact with machinery


Sodium formate
Sodium formate helps raise the pH during the neutralization process

Sodium bicarbonate
Sodium bicarbonate helps raise the pH during the neutralization process

Formic acid
Formic acid reduces the pH for the rechroming process or helps with chemically fixing dyehouse chemicals to the leather at the end of the dyehouse processes

Chrome syntans
Chrome syntans are used during rechroming to improve the softness of the final leathet

Chromium sulphate
Chromium sulphate is used during rechroming to improve the softness of the final leather

Syntans
Syntans are used to give properties such as softness, fullness, roundness to the leather

Resins 
Resins are used to give fullness and a tight grain to the leather

Polymers 
Polymers are used to give fullness and a tight grain to the leather

Dyes
Dyes are used to give the leather a colour desired by the customer

Dyeing auxiliaries
Dyeing auxiliaries help disperse the dyes evenly

Fatliquors
Fatliquors are oils that are added to leather to give softness to the final leather