Cyanamide dimer tannin
Properties:
Retan R7 has a selective filling effect, mainly fill the loose structure of leather.
Retan R7 can enhance the fullness of leather and tightness of grain, keeps good characteristics of chrome tanned leather.
Retan R7 has appropriate astringency, to maintain the smooth grain.
Retan R7 has uniform dyeing property, obtains uniform and brilliant shade.
Retan R7 imparts good buffing ability, advantages for the adhesion of finishing and embossed ability.
Retan R7 outstanding aging resistance, maintaining leather characteristics and physical properties, especially the tensile strength.
Main application:
Used for retanning.