Patent ID: 11873536
Assignee: BEKEN ITALIA S.R.L.
Field: Chemical engineering (Chemistry)
Classification: CPC C | IPC C

Claim 6:
7. The process according to claim 1, wherein the liming step is carried out at room temperature, for a time between 18 and 36 hours, with a composition containing a weight of water about double that of the hide to be treated, Ca(OH)2 in an amount between 3 and 5% with respect to the weight of the hide to be treated, and a compound selected from sodium sulphide (Na2S) used in an amount between 2 and 3% with respect to the weight of the hide to be treated and sodium hydrosulphide (NaHS) in an amount between 0.5 and 1% by weight with respect to the hide to be treated.