Patents
Sitemap › C14 - Skins; Hides; Pelts; Leather › C14C - Treating skins, hides or leather with chemicals, enzymes or micro-organisms, e.g. tanning, impregnating or finishing; Apparatus therefor; Compositions for tanning › C14C 3 - Tanning; Compositions for tanning
Patents for C14C 3 - Tanning; Compositions for tanning (2,056)
10/1990
10/16/1990US4963156 Mixture of aluminum and titanium compounds and organic masking agent in specific proportions; stability
10/09/1990US4961750 Acrylate tanning agent
10/02/1990US4960429 Adjustment of substrate using titanyl salt; bonding to polymer
09/1990
09/26/1990CN1045604A Tanning about goose down fur and its products
07/1990
07/18/1990CN1043957A Non-pollution dual tanning technology for glutaric aldehyde pigskin leather
07/03/1990US4938779 Chrome tanning of leather with reduced waste of chromium
06/1990
06/26/1990US4937009 Aqueous solution with alkali metal salt of polyhydroxymonocarboxylic acid as masking agent
06/26/1990US4936864 With salts of aluminum, titanium or zirconium; chormium-free
06/13/1990EP0372746A2 The use of selected amphiphilic copolymers in the treatment of leather
06/13/1990CN1042942A Leather treatment with selected amphiphilic copolymers
06/12/1990CA1270224A1 Treatment of raw hides and skins
06/02/1990CA2003941A1 Leather treatment with selected amphiphilic copolymers
05/1990
05/30/1990EP0370161A2 Chromium free process for the tanning of hides
04/1990
04/24/1990US4919680 High-extraction chrome tanning process
04/19/1990DE3835418A1 Process and apparatus for treating contaminated mineral salts or salt mixtures
04/17/1990CA1267753A1 Process for the preparation of fish skin
04/04/1990EP0362134A2 Leather treating agent
03/1990
03/29/1990DE3931978A1 Leather treatment agents giving soft handling - contg. substd. long chain (di:)alkanol:amide sulpho-succinic acid deriv. and synthetic aromatic tanning agent
03/22/1990DE3929366A1 Prodn. of chrome free soft leather - by treatment with oil, fat or fatty oil before tanning
02/1990
02/20/1990US4902298 Stably fixing high chrome levels
01/1990
01/31/1990CN1039264A Method for tanning fowl (duck or goose) down skin
01/31/1990CN1039263A Method and apparatus for preparing goose down skin
01/10/1990EP0349892A2 Tanning method presenting a high chrome exhaustion of the tanning bath
12/1989
12/26/1989US4889811 Methods for making leather
12/20/1989EP0347373A1 Aqueous solutions of synthetic tanning agents
12/19/1989US4888412 Tanning assistant
11/1989
11/08/1989CN1036989A Technologic process for solving thoroughly the loosing face of the face leather of a cattlehide shoes
11/02/1989EP0339437A1 Tanning process saving chromium
10/1989
10/31/1989US4877410 Process for tanning fish skin
10/24/1989US4875900 Improving chrome absorption with dispersion of microcrystalline polyamides or polyesters
10/05/1989WO1989009188A1 Process for recovering chromic anhydride from exhausted aqueous chromium plating bath solutions with exploitation of the recovered chromium
09/1989
09/21/1989DE3907821A1 Process for producing a firm and flexible finely grained chrome leather
08/1989
08/17/1989DE3903499A1 Tanning agent and method
08/15/1989CA1258357A1 Leather tanning process using aluminium (iii) and titanium (iv) complexes
07/1989
07/19/1989EP0324536A1 Improved leather
06/1989
06/06/1989CA1255432A1 Terpolymers of maleic acid anhydride, (meth)acrylic acid and (meth)acrylonitrile
06/06/1989CA1255056A1 Chromium-free tanning process
05/1989
05/30/1989US4834763 Process for the retanning of chrome leathers
05/16/1989US4830632 Aqueous composition from a sulfonated phenol, an amine and a tanning salt, process for the production thereof and use thereof as a tanning agent
05/09/1989US4828570 Tanning agent and a process for its preparation
05/03/1989CN1032675A Chrominum extinctive absorption in hide processing
05/03/1989CN1004078B Process for preparation of fish skin
04/1989
04/18/1989US4822372 Processing for tanning leather
04/12/1989EP0310846A2 Condensation products of bis-(4-hydroxyphenyl) sulfones used as aids in tanning, their preparation and their use for tanning leather
03/1989
03/21/1989US4813968 Retanning process
03/07/1989US4810252 Anionically modified melamine-formaldehyde resin
03/01/1989EP0304677A1 Tanning method with high chrome exhaustion
02/1989
02/15/1989CN1031113A Process for tanning fish-skin
02/08/1989EP0209780B1 Leather-treating agent and its use
02/01/1989EP0301406A2 Tanning adjuvant, its use and method of tanning leather
01/1989
01/25/1989CN1030612A Preparing method of greasing agent for leather
11/1988
11/17/1988EP0291165A1 Tanning Agent
11/15/1988US4784664 Shrinkage resistance, for leather
11/09/1988EP0290143A1 Tanning agent
10/1988
10/13/1988DE3711458A1 Process for tanning leather
10/12/1988EP0285738A1 Process for tanning fish skin
09/1988
09/14/1988CN85104484B Rocking rotary drum
09/07/1988EP0281486A1 Biologically stabilised and untanned hides and method for their preparation
08/1988
08/30/1988CA1241155A1 Process for finish dressing minerally dressed leathers or those dressed by a combined method, using polymer dressings
08/17/1988EP0278267A1 Retanning process
08/10/1988CN85100819B New pollution-free tanning technology
08/09/1988US4762522 Agent for treatment of hides and pelts
07/1988
07/05/1988US4755186 Process for the preparation of fish skin
06/1988
06/22/1988EP0271529A1 Pharmaceutical compositions
06/15/1988EP0270767A1 Tanning process saving chrome
06/14/1988US4750906 Using a chromium doped acrylic polymer
06/07/1988CA1237559A1 Leather fatliquoring agents combinable with tanning and retanning compositions
05/1988
05/17/1988US4744794 Anionic or nonionic surfactants
05/10/1988US4743666 Water-soluble copolymers with pendant phosphonic, sulphonic and amide groups
05/04/1988EP0265818A2 Process for the preparation of N,N-disubstituted beta-aminoacids and their use in water-proofing leather and skins
05/04/1988EP0265657A1 Process for tanning leather
05/03/1988US4741738 Sulfonation of fats and oils
04/1988
04/28/1988DE3636002A1 Improved process for the chrome-tanning of pelts
04/27/1988EP0264628A1 Process for tanning leather
04/27/1988EP0264398A1 Process for the treatment of wool skins.
04/26/1988US4740211 Synthetic phenols, vegetable extracts and mineral tanning agents; acidifying neutralizing, fat liquoring
04/12/1988US4737549 Terpolymers of maleic acid anhydride, (meth)acrylic acid, and (meth)acrylonitrile
04/05/1988CA1234654A1 Tanning of leather
03/1988
03/31/1988DE3632638A1 Process for tanning leather
03/15/1988US4731089 Leather tanning process using aluminium (III) and titanium (IV) complexes
02/1988
02/16/1988CA1232708A1 Process for tanning hides
01/1988
01/14/1988WO1988000244A1 Non-chrome tanning process
12/1987
12/30/1987WO1987007893A1 Pharmaceutical compositions
12/29/1987US4715861 Economy chrome tanning process with aldehyde-acids and keto-acids
11/1987
11/11/1987EP0245205A2 Aqueous composition comprising a sulfonated phenol, an amine and a tanning salt, its manufacture and its use as a tanning agent
11/11/1987EP0244661A2 Edible foil of collagen containing gluten, espcially wheat gluten, process for its manufacture and use of the foil for enveloping foodstuffs
11/05/1987WO1987006622A1 Process for the treatment of wool skins
07/1987
07/29/1987CN86107461A Process for preparation of fish skin
06/1987
06/25/1987DE3546048A1 Process and apparatus for the treatment of skins in a tanning vessel
06/23/1987US4675021 Amphoteric condensates and their use in retanning
06/16/1987EP0225491A2 Tanning agent and method for its manufacture
04/1987
04/01/1987EP0216271A2 Phosphonic-acid derivatives for use as adjuvants in leather manufacture
04/01/1987EP0216089A2 Terpolymers
03/1987
03/12/1987WO1987001394A1 Chromium-free tanning process
01/1987
01/28/1987EP0209780A2 Leather-treating agent and its use
12/1986
12/23/1986US4631063 Process for finish dressing minerally dressed leathers or those dressed by a combined method, using polymer dressings
12/16/1986US4629616 From sulfuric acid wastes
12/10/1986EP0204213A1 Method of retanning chrome-tanned leather
12/03/1986CN85104484A Rocking rotary drum
11/1986
11/12/1986EP0201054A1 Tanning process saving chrome
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