| Patents for C14C 3 - Tanning; Compositions for tanning (2,056) |
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| 06/02/1981 | CA1102472A1 Preparations of reaction products obtained from epoxides, fatty amines and reaction products which contain carboxyl groups, process for their manufacture and their use |
| 04/28/1981 | US4264319 In combination with carboxylic acid esters or amides or containing urethane groups |
| 04/28/1981 | US4264318 Reducing waste water pollution |
| 04/08/1981 | EP0026314A1 Phenol formaldehyde condensates, their preparation and use as dispersing agents, liquefiers, and tanning agents |
| 03/11/1981 | EP0024886A1 Process for tanning leather with acrylic polymer and mineral tanning agent and leather so produced |
| 02/18/1981 | EP0024014A1 Method of retanning mineral tanned leather with aromatic sulfonic acids |
| 02/17/1981 | CA1095661A1 Treatment of hides |
| 01/20/1981 | US4245996 Condensation products of terphenylsulphonic acids, naphthalenesulphonic acids, bis-(4-hydroxyphenyl) sulphone and formaldehyde |
| 01/13/1981 | CA1093258A1 Manufacture of leather |
| 01/07/1981 | EP0022067A1 Process for the one-bath dyeing and tanning of skins and furs |
| 12/10/1980 | EP0019846A2 Tanning agents of the azo series, their preparation and their use in the simultaneous tanning and dyeing of leather, and preparations containing them |
| 11/26/1980 | EP0019435A2 A tanning process and tanning compositions |
| 09/17/1980 | EP0015478A1 Chrome tanning agents resisting ageing |
| 09/09/1980 | US4221564 Water-insoluble alkali metal aluminosilicates and polycarboxylic acids in the tanning process for the production of leather |
| 09/03/1980 | EP0014721A1 Method of tanning rawhide |
| 08/12/1980 | US4217104 Process for the production of fur skins |
| 08/05/1980 | US4215989 Process for chrome recovery from industrial waste and the like, as from chrome-ladened tannery waste, including pollution control of the same |
| 07/08/1980 | US4211529 Chrome-tanning |
| 04/02/1980 | EP0009081A1 Process and apparatus for the manufacture of tanned hides and skins |
| 02/20/1980 | EP0008032A1 Condensation products from terphenyl-sulphonic acids, naphthalene-sulphonic acids, bis-(4-hydroxyphenyl)-sulphone and formaldehyde, and their use as tanning agents |
| 02/06/1980 | EP0007555A1 Application of water-insoluble aluminium silicates to the manufacture of leather |
| 02/05/1980 | US4187074 Water-soluble cationic oligourethane resins and the use thereof for the treatment of pelts or leather |
| 01/09/1980 | EP0006101A1 Process for chrome recovery from industrial waste and the like |
| 11/28/1979 | EP0005546A2 Use of water-insoluble aluminium silicates in the tanning of leather by chromium compounds |
| 10/04/1979 | WO1979000712A1 Method of tanning rawhide |
| 09/25/1979 | US4169052 Process for absorbing hydrocarbons or organic solvents |
| 09/18/1979 | US4168240 Process for the preparation of a chrome tanning agent and Glauber's salt |
| 06/05/1979 | CA1055655A1 Method of tanning hides |
| 05/29/1979 | US4156750 Method for fabricating covering materials from leather for the upholstery and cushions of furniture and covering materials produced by said method |
| 04/24/1979 | CA1052954A1 Tanning of hides |
| 03/21/1979 | EP0001067A1 Water-soluble cationic oligourethane resins and their use in the treatment of hides or leather |
| 11/21/1978 | US4126413 And a chromium salt |
| 08/29/1978 | US4110367 Sulfonated alkylphenoxy acetones |
| 08/22/1978 | US4108596 Recovery of chromium values from waste streams by the use of alkaline magnesium compounds |
| 08/15/1978 | US4106898 Containing no free isocyanate, aziridine, phenolic, or ionic groups |
| 08/15/1978 | US4106897 Leather tanning with oligourethanes |
| 07/18/1978 | US4101271 Chromium(iii) salt and acid binding agent |
| 06/27/1978 | US4097234 Soaking in sodium sulfate, comminution |
| 04/25/1978 | US4086319 Recovery of chromium from tannery waste |
| 03/14/1978 | US4078888 4-tolyl diiodomethyl sulfone |
| 02/21/1978 | US4074968 Retanning and fatliquoring agent |
| 11/29/1977 | US4060384 Manufacture of leather |
| 10/18/1977 | US4054716 Preparations of reaction products obtained from epoxides, fatty amines and reaction products which contain carboxyl groups, process for their manufacture and their use |
| 10/18/1977 | US4054617 Phenol-alkylphenol phosphates |
| 09/20/1977 | US4049807 2-Amino-1,3-thiazines their use and preparation |
| 09/20/1977 | US4049379 Complex basic zirconium salts and aluminum salts |
| 08/16/1977 | US4042321 Tanning of hides |
| 08/02/1977 | US4039281 Method for the preparation of leather and fur skins |
| 03/01/1977 | US4009996 Reaction products of phenolsulphonic acid-urea-formaldehyde as tanning agents and process for their manufacture |
| 08/10/1976 | US3973904 Water-soluble synthetic tanning agents |
| 06/29/1976 | US3966402 Chromium sulfate |
| 06/01/1976 | US3960481 Organic salt of a phosphorated ethoxylated saturated fatty acid |
| 04/27/1976 | US3953163 Tanning leather, chromium or zirconium sulfate, aryl sulfone |
| 04/13/1976 | US3950131 Continuous method for reclaiming chromium hydroxide from spent chrome tanning liquors and re-use thereof in subsequent tanning |
| 02/17/1976 | US3938951 Method of obtaining titanium tanning agent and its application for tanning hides, pelts and fur skins |
| 01/27/1976 | US3934975 Leather treating process |