| Patents for C14C 3 - Tanning; Compositions for tanning (2,056) |
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| 12/08/2004 | CN1179054C Leather tanning |
| 12/07/2004 | US6827745 Mixture of THP and a moderator to tan leather |
| 12/02/2004 | DE10321628A1 Verwendung von Copolymerisaten als Hilfsmittel für die Lederherstellung The use of copolymers as auxiliaries for leather production |
| 12/01/2004 | CN1177940C Preparation method of aquocomposition for treating leather |
| 11/25/2004 | WO2004101827A1 Use of copolymers as auxiliary agents for producing leather |
| 11/25/2004 | US20040232376 Chromium-free, waterproof leather |
| 11/24/2004 | EP1027460B1 Tanning leather |
| 11/17/2004 | EP1377711A4 Methods and products useful in recovering and recycling tannins |
| 11/17/2004 | CN1546553A Non-yellowing linear amino-modified silicon oil and its microemulsion preparation method |
| 11/10/2004 | EP1475413A1 Process for the production of a material using leather waste and moulded article produced therewith |
| 11/10/2004 | CN1544659A Leather flame-retardant amino resin tanning agent and its preparation method |
| 11/03/2004 | CN1543511A Method for producing tanning agents containing sulphone |
| 11/03/2004 | CN1542144A Foaming-bath method for producing tanned leather |
| 10/28/2004 | US20040214309 via soaking, liming, deliming, and/or bating with protease derived from Aranicola proteolyticus HY-3 strains; isotactic pressure sintering through die plate while preventing formation of fluid in powder; bioremediation; proteolysis; waste treatment |
| 10/27/2004 | CN1539996A Preparing retanning filler in use for leather from tanning wastes-chromel leather bits |
| 10/20/2004 | CN1172007C Polyurethane/inorganic nano composite leather tannin material and its preparation method |
| 10/20/2004 | CN1171865C Process for preparing long-chain alkylpenyl sulfuryl chloride |
| 10/14/2004 | WO2004087967A1 Composition comprising chromium salts for tanning |
| 10/13/2004 | CN1170946C Sheep skin oil-tanning and scrubbing leather and its making method |
| 10/13/2004 | CN1170922C Tanning leather |
| 09/23/2004 | US20040181881 Sulfonating aromatic followed by addition of aqueous mixture of organic ligands and polyfunctional polymer; salt formation; adding trivalent aluminum salt to complex; adding sulfosalicylic acid; slurrying; drying to powder; self-tanning leather; formaldehyde-free, discoloration inhibition |
| 09/15/2004 | EP1297188B1 Use of gallic acid for stabilising chrome-iii against oxidation in chrome-tanned leather |
| 09/08/2004 | CN1526646A Prepn of chromium subsulfate |
| 09/02/2004 | US20040168266 Methods and products useful in recovering and recycling tannins |
| 08/19/2004 | WO2004070063A1 Method for producing leather |
| 08/19/2004 | DE10304959A1 Verfahren zur Herstellung von Leder A process for the production of leather |
| 08/12/2004 | WO2004067782A1 Tanning agents and preservatives |
| 08/12/2004 | WO2004067781A1 Adducts based on cyclic compounds and the use thereof as tanning agents and curing agents |
| 08/11/2004 | EP1444369A1 Chrome-based product in a hydrolyzed proteic compound and process for the making thereof |
| 08/05/2004 | US20040148707 Comprising reaction product of sulfonated aromatics, aldehydes and/or ketones and optionally one or more unsulfonated aromatics, urea and urea derivatives |
| 08/04/2004 | CN1517443A Method for preparing modified plant tannin extract, produced product and its application |
| 08/04/2004 | CN1160473C Tanning leather |
| 07/29/2004 | DE10303311A1 Production of di-, oligo- and polymers of dicarbonyl compounds as aqueous formulation or powder, used for tanning and as preservative, involves acid-catalyzed condensation of 2-substituted heterocyclic compound in water |
| 07/15/2004 | US20040137093 Polymerizing (meth)acrylic acid using a thioglycolic acid catalyst; adding an aqueous solution of powdered acacia; sulfonation by sodium bisulfite; increased tannin weight and solubility for better leather penetration |
| 07/14/2004 | EP1437419A1 A process for the provision of a plant extract containing condensed tannins, with astringent characteristics, modified by copolymerization, for use in tanning and retanning of skins, a plant extract with astringent characteristics, modified by copolymerization, and use of a modified plant extract containing tannins |
| 07/08/2004 | WO2004057036A1 Process for preparing a synthetic aluminium tanning agent |
| 06/24/2004 | WO2004053170A1 Process for tanning and tanning agent |
| 06/23/2004 | CN1506472A Process for modifing physical and chemical character of tannin of black wattle plant and application of chemical modified tannin |
| 06/16/2004 | EP1428851A1 A process for modification of the physical and chemical properties of a plant extract of acacia mimosa, a modified plant extract, and use of a chemically modified plant extract |
| 06/16/2004 | CN1505686A Improvements in leather processing |
| 06/10/2004 | WO2004048616A1 Method for producing a leather semi-finished product |
| 06/10/2004 | US20040109908 Process for modification of the physical and chemical properties of a plant extract of Acacia Mimosa, a modified plant extract, and use of a chemically modified plant extract |
| 06/03/2004 | DE10255095A1 Verfahren zur Herstellung eines Leder-Halbfabrikates A method for producing a semifinished leather product |
| 05/26/2004 | EP1421223A1 Method for producing tanning agents containing sulphone |
| 05/26/2004 | CN1498974A Condensate for iron tanning retanning |
| 05/26/2004 | CN1498973A Waterproof leather without contg. Cr |
| 05/26/2004 | CN1151276C Process for preparing leather retanning agent contaiing aldehyde |
| 05/26/2004 | CN1151275C Leather retanning agent preparation method |
| 05/26/2004 | CN1151274C Prepn. of aldehyde acid tanning agent |
| 05/13/2004 | WO2004040021A1 A novel ecofriendly bio-process for leather processing |
| 05/13/2004 | DE10251141A1 A process for preparation of leather and artificial leather (sic) using vegetable and/or synthetic tannins with insertion of polymers in a post-tanning step and introduction of reactive carbonyl compounds |
| 05/12/2004 | CN1495276A Application of carbonyl compound in process of tanning hide |
| 05/06/2004 | EP1416058A1 Condensation products for the retanning of iron-tanned leather |
| 05/06/2004 | EP1416057A1 Chrome free waterproof leather |
| 05/06/2004 | DE10250112A1 Kondensationsprodukt zum Nachgeben von Fe-gegerbtem Leder Condensation product to yield Fe-tanned leather |
| 05/06/2004 | DE10250111A1 Chromfreies, wasserdichtes Leder Chrome-free, waterproof leather |
| 04/28/2004 | CN1492057A Tanning method for fish skin and after finishing method for fish skin leather |
| 04/28/2004 | CN1492056A Process for producing pigskin garment leather |
| 04/22/2004 | US20040074009 Production of tanned and optionally retanned leather by treatment of an optionally (pre)tanned animal hide or pelt with an aldehyde-based treatment agent (A), wherein the optionally (pre)tanned animal or hide or pelt is treated |
| 04/21/2004 | EP1238117B1 Agent and method for enzymatically tanning skins |
| 04/07/2004 | CN1488003A Production of tanned leather and products suitable therefore |
| 04/07/2004 | CN1487096A Chrome-free tanning technique |
| 04/07/2004 | CN1487095A Plant polyphenol reduced chrome-aluminium tanning agent and its prepn |
| 03/23/2004 | US6708531 Ecofriendly bio-process for leather processing |
| 03/18/2004 | WO2004022790A1 Formulation for use in chrome or chrome-free tannage |
| 03/18/2004 | US20040052751 Process for the preparation of a formaldehyde-free synthetic tanning agent |
| 03/18/2004 | US20040049857 Dispersion of fungicides in tanning solutions by mixing with carriers selected from octadecanol, 1,10-decanediol, 1,8-octanediol or 1,6-hexanediol; aftertreatment |
| 03/18/2004 | DE10028142B4 Verfahren zum Pickeln und Chromgerben A method for pimples and chrome tanning |
| 03/17/2004 | CN1142294C Acid-free chromic tanning agent and its prepn |
| 03/17/2004 | CN1142293C Tannin extract type neutralizing agent for leather and its preparing process |
| 03/10/2004 | CN1481427A Process for gelatines extraction and chromium salts recovery from tanned hides and skins shavings |
| 03/03/2004 | CN1140634C High molecular metal complex leather tanning agent and preparing method thereof |
| 02/26/2004 | DE10237259A1 Clay mineral giving specified particle size on stirring in water is used as a leather tanning agent, especially in combination with an organic tanning agent |
| 02/19/2004 | WO2004015148A1 Process of tanning hide |
| 02/19/2004 | US20040031106 Pickling and bating free process for both hides and skins using a basic chromium sulfate and an alkali metal organic acid salt at a ph of 5-5.5 |
| 02/18/2004 | EP1192284B1 Leather tanning |
| 02/12/2004 | US20040030102 Process for gelatines extraction and chromium salts recovery from tanned hides and skins shavings |
| 02/11/2004 | CN1474876A Tannages and tanning material |
| 02/04/2004 | EP1386010A1 Improvements in leather processing |
| 02/04/2004 | CN1472343A Preparation of modified collagen fiber and its tanning process |
| 02/03/2004 | US6685747 Synergistic tanning composition comprising aqueous solution of tris(hydroxymethyl)phosphine, its condensates, or tetrakis(hydroxymethyl)phosphonium salts and chromium tanning salt in weight ratio from 200:1 to 1:1 |
| 01/29/2004 | US20040018247 Tanning formulation comtaining chrome III salts and complexing agents comprising chromic acid in aqueous solution and complexing agent containing polymers of molecular weight 500-10,000 |
| 01/08/2004 | WO2004003238A1 Process and auxiliaries for the treatment of organically tanned leather |
| 01/07/2004 | EP1377711A1 Methods and products useful in recovering and recycling tannins |
| 01/07/2004 | CN1465719A Process for preparing high astringency light color leather main tanning agent |
| 01/07/2004 | CN1465718A Chrome free or less chrome main tanning agent for leather and preparation process thereof |
| 12/31/2003 | CN1464072A Ultrasonic wave chromium removing process for tannery containing chrome leather scraps oxidation |
| 12/16/2003 | US6663676 Preparation of an aqueous composition for treating leather |
| 11/25/2003 | US6652597 By free-radically initiated polymerization of an N-vinylamide or N-vinylamine, and possible acrylic acid or ester comonomers |
| 11/20/2003 | WO2003095681A1 Tanning agent and curing agent based on dialdehydes |
| 11/19/2003 | EP1362128A1 Production of tanned leather and products suitable therefore |
| 11/19/2003 | CN1128229C Process for preparing chrome tanning agent from organic waste containing cellulose |
| 11/19/2003 | CN1128228C Process for preparing chrome tanning agent |
| 11/05/2003 | CN1453369A Chrome tanning agent for blending and reducing animal and plant fiber and its prepn |
| 10/29/2003 | EP1356007A1 Process for gelatines extraction and chromium salts recovery from tanned hides and skins shavings |
| 10/28/2003 | CA2117557C Anticalcification treatment for aldehyde-tanned biological tissue |
| 10/22/2003 | EP1354069A1 Leather impregnated with temperature stabilizing material and method for producing such leather |
| 10/22/2003 | CN1450175A Plant polyphenol-protein composite leather filler and preparation process thereof |
| 10/01/2003 | CN1446266A Treatment of part processed leather |
| 09/25/2003 | WO2003078664A1 Use of polyelectrolytes in the production of leather |