Process for solvent-drying leather
AssigneeE. I. Du Pont de Nemours and Company
InventorPhilip L. Bartlett
Life of this patent
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Abstract
A process for drying water-wet animal hides comprising contacting the water-wet hides with a single phase drying medium comprising a chlorine-containing carrier liquid plus methanol and removing the hides from contact with the drying medium when the requisite amount of water has been removed from the hides. The useful carrier liquids are 1,1,2-trichlorotrifluoroethane, trichlorofluoromethane, tetrachloroethylene and 1,1,1-trichloroethane.
Claims20
A process for drying water-wet animal hides which comprises contacting the water-wet hides with a single phase drying medium comprising a chlorine-containing carrier liquid and methanol and removing the hides from contact with the drying medium when the required amount of water has been removed, said carrier liquid being selected from a member of the group:
- 1,1,2-trichlorotrifluoroethane,
- trichlorofluoromethane,
- tetrachloroethylene,
- 1,1,1-trichloroethane, and
- mixtures thereof.
Dependencies are inferred from the claim text.