Bio-tanning process for leather making
AssigneeCouncil of Scientific and Industrial Research
InventorsSaravanabhavan Subramani, Thanikaivelan Palanisamy, Jonnalagadda Rao, Balachandran Nair, Ramasami Thirumalachari
Life of this patent
Estimating the term…
Abstract
Conventionally skins/hides are tanned with metal-ions and vegetable tannins. Environmental constraints on the discharge of toxic metal-ions and poor biodegradable vegetable tannins in the wastewater have become serious issue. In this invention, the pelts are tanned using eco-benign bio-molecules other than vegetable tannins to reduce the pollution loads. Performance of the leathers is on par with conventionally processed leathers.
Claims8
A bio-tanning process for leather making, which comprises treating a pelt in aqueous medium with a collagen based tanning agent to obtain bio-tanned leather.
A bio-tanning process for leather making, which comprises treating a pelt in aqueous medium with 5-15% w/w, of collagen based tanning agent in the pH range of 7.0 to 8.5, preferably under dynamic condition, at a temperature not exceeding 45° C. for a period of not less than 2 hours to obtain bio-tanned leather.
Dependencies are inferred from the claim text.