Biologically stable, untanned wet animal hides
US5147693A · kind A · utility
1Cited by
4References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 30, 1990 |
| Grant date | Sep 15, 1992 |
| Priority date | — |
| Expiry date | Jul 30, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC14C1/08
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Biologically stable, fungistatic and bacteriostatic, untanned wet animal hides intrinsically insensitive to mildews, devoid of coloration and chromium values and containing from 50% to 70% of water, from 5% to 30% of inorganic matter, from 0.5% to 1.5% of Al.sub.2 O.sub.3 and from 85% to 90% of dermal material, are produced by impregnating pickled hides with a basic aluminum polychloride or polychlorosulfate and then alkalyzing the medium of impregnation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.