Class 8/94.25 - With heavy metal compound

Subclass of Class 8 - Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
Definition: Processes or tanning in which the tanning agent contains
No. of patents: 26
Last issue date: 12/07/2004

Number	Title	Issue Date
6827745	Mixture of THP and a moderator to tan leather A mixture of THP and a moderator is used to tan leather. The moderator is selected from metaphosphates and polyhydroxy or polypyrolidyl compounds such as glycerol, carboxydrates PVA or PVP. ...	12/07/2004
6685747	Mixture of THP and chrome as tanning agents THP and chrome are synergistic tanning agents. The combination of THP with small amounts of chrome and optionally non-ionic and/or cationic surfactants gives increased area yield and shrink temperature compared with THP, and reduced environmental impact c...	02/03/2004
5972037	Leather tanning processes and the products thereof The production of household-machine washable and dryable, waterproof, nonflammable, and extremely colorfast leathers from wet blue hides by a process which has the advantage that significantly reduced volumes of toxic wastes are generated. The wet blue hi...	10/26/1999
5900027	Process for preparing animal hides or pelts In order to make processes for finishing animal hides or pelts less labor-intensive and more environmentally compatible, a process is proposed in which, following a conventionally conducted soak, the animal hides or pelts are treated with a conventional t...	05/04/1999
5820634	Process for tanning leather Bisulphite-blocked, polyether-modified polyisocyanates are outstandingly suitable, in combination with mineral tanning agents, for the tanning of leather....	10/13/1998
5725599	Process for mineral tanning, re-tanning or leather after-treatment A process for the production of mineral tanned or/and re-tanned or/and after-treated leather or pelt, wherein before the mineral tanning, directly after the mineral tanning, directly before the mineral re-tanning, after the mineral re-tanning or/and with ...	03/10/1998
5516338	Water-soluble titanium salt-tannin dyes and methods of use thereof An aqueous dye composition is based upon a mixture of a water-soluble titanium salt, preferably titanium potassium oxalate and a tannin substance, preferably Myrobalan extract. This dye composition may be used to dye either natural fibers, synthetic fiber...	05/14/1996
5512058	Process for the treatment of skins, hides or shett materials containing collagen by a dense, pressurized fluid A process for the treatment of products constituted by hides and skins with a view towards their transformation into leather, and for the treatment of leather which involves contacting the product with a dense, pressurized fluid, such as CO2, i...	04/30/1996
5500020	Process for titanium-based mixed tannings The tanning of skins is carried out using a titanium-based compound in a percentage of 5% to 10% and especially of 6% with respect to the pelt weight of the skins; a washing treatment is carried out between a basification phase and a further tanning phase...	03/19/1996
5409501	Dilutable aluminum triformate tanning agents in the form of highly concentrated, storable aqueous solutions and their use Described is the use of at least substantially storage-stable supersaturated and acidified aqueous solutions of mixtures of aluminum triformate and alkali-metal and/or alkaline-earth formates as a means of supplying a water-dissolved mineral tanning agent...	04/25/1995
5326377	Method of treating hides There is described a method for treating delimed and bated hides, i.e. pelts. According to the inventive method, the pelts are brought to a suitable mineral tanning state and then tanned with mineral salts. The inventive treatment process corresponds to t...	07/05/1994
5256317	Compositions for the treatment of leather and furs A composition for the treatment of leather and furs, containing (A) an anionic aromatic syntan and (B) a polymer and/or copolymer of an unsaturated C3 -C5 mono- or dicarboxylic acid and/or hydroxy compounds thereof, a process for the...	10/26/1993
5256318	Leather treatment and process for treating leather A tanned leather treated with a fatliquoring agent in combination with a fluorine-containing oil, which has good touch, water resistance, water- and oil-repellency, washing resistance, and which is not discolored or faded by dry cleaning....	10/26/1993
5098446	Use of fluorochemicals in leather manufacture Leather manufacturing processes are described in which fluorochemicals are included in the various processing baths to improve efficiency, reduce processing time, and increase the quality of the finished leather product. Various types of fluorochemicals a...	03/24/1992
4936864	Condensates of bis-(4-hydroxyphenyl) sulfone as tanning assistants, their preparation and use in the tanning of leather A condensate of bis-(4-hydroxyphenyl) sulfone, an aldehyde, a dialdehyde and/or glyoxylic acid and aminoacetic acid or an N-substituted aminoacetic acid is prepared and used as a tanning assistant, in a process for tanning leather in combination with, in ...	06/26/1990
4919680	High-extraction chrome tanning process Crome tanning of pickled animal hides with a tanning agent comprising a reaction product of a basic chromium (III) sulfate and aliphatic C4 -C6 dicarboxylic acids or their salts is improved by preparing the reaction product in an aqu...	04/24/1990
4830632	Aqueous composition from a sulfonated phenol, an amine and a tanning salt, process for the production thereof and use thereof as a tanning agent Aqueous compositions derived from (A) a reaction product of a phenol and e.g. oleum in a molar ratio (phenol):(SO3) being (1):(1.1-2.2), (B) a water soluble, lower alkylamine or lower alkanolamine, a lower alkylenediamine, a poly-dialkylenepolyamine...	05/16/1989
4560384	Process for tanning hides A process for tanning hides for soles or insoles with ammonium titanyl sulphate. The hides, subjected to soaking, liming, fleshing, and deliming, are first treated with ammonium sulphate. Successively, ammonium titanyl sulphate as well as citric acid or a...	12/24/1985
4504271	Leather tanning agent and process for making same A leather tanning agent characterized in that it contains the following components, percent by weight: The above-mentioned additives of TiO2, ZrO2 and Al2 O3 incorporated in the sulphates are present therein in a che...	03/12/1985
4396387	Method for preparing titanium tanning agent and use thereof in leather tanning process The present invention relates to methods for preparing a titanium tanning agent from sulphuric-acid titanium-ferriferous solutions and use thereof for leather tanning. The method for preparing a titanium tanning agent from titanium-ferriferous sulphate so...	08/02/1983
4314975	Method for preparing titanium tanning agent The present invention relates to methods for preparing a titanium tanning agent from sulphuric-acid titanium-ferriferous solutions and use thereof for leather tanning. The method for preparing a titanium tanning agent from titanium-ferriferous sulphate so...	02/09/1982
4272242	Use of water-insoluble aluminosilicates in tanning process for the production of leather In the process of tanning for the production of leather comprising subjecting pickled uncured hides to the action of an aqueous liquor containing (1) chemical tanning or pretanning agents, and (2) auxiliary chemicals to tanning and recovering leather, the impr...	06/09/1981
4264318	Water-insoluble aluminosilicates as tanning agents for the dressing of fur skin In the process of tanning for the production of dressed fur skins comprising subjecting pickled fur skins to the action of an aqueous liquor containing tanning agents, the improvement which comprises adding to the pickling bath as sole tanning agent a wat...	04/28/1981
4264319	Water-insoluble aluminosilicates in the manufacture of leather In an improved process of tanning for the production of leather comprising subjecting pickled uncured hides to the action of an aqueous liquor containing (1) chemical tanning or pretanning agents and (2) auxiliary chemicals to tanning and recovering leath...	04/28/1981
4105402	Treatment of sulfide-limed pelts in acid baths A method of treating sulfide-limed pelts in improved acid treating baths for purposes of de-liming, bating, pickling, or pre-tanning is disclosed. The improved baths contain water-soluble salts of manganese, cobalt, nickel, titanium, or zirconium, which s...	08/08/1978
3938951	Method of obtaining titanium tanning agent and its application for tanning hides, pelts and fur skins A method of obtaining a titanium tanning agent, based essentially upon sulfuric-acid treatment of titaniferous material followed by precipitating from titanium sulfate solution ammonium titanyl double sulfate monohydrate with subsequent treatment of that ...	02/17/1976

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Class 8/94.25 - With heavy metal compound