Class 8/94.24 - With aldehyde-aromatic condensation product

Subclass of Class 8 - Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
Definition: Processes of tanning in which the tanning agent used contains
No. of patents: 28
Last issue date: 09/18/2007

Number	Title	Issue Date
7270985	Process for the preparation of aldehyde from a proteinous source for industrial applications A process is disclosed to treat the protein hydrolysate, prepared conventionally from a proteinous source, with alkali metal hydride to obtain alcohol which is subsequently oxidized to obtain aldehyde under certain specified conditions, thereby converting large prot...	09/18/2007
7115387	Process for the preparation of aldehyde from a proteinous source for industrial applications A process is disclosed to treat the protein hydrolysate, prepared conventionally from a proteinous source, with alkyl halide to obtain alcohol which is subsequently oxidized to obtain aldehyde under certain specified conditions, thereby converting large protein mole...	10/03/2006
6991659	Production of tanned leather and products suitable therefore The invention provides a process for the 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 hide or pelt is treated ...	01/31/2006
6846336	Acid-resistant solutions containing aromatic formaldehyde condensation products The present invention relates to acid-resistant solutions containing aromatic formaldehyde condensation products having sulfonate and/or carboxylate groups, aliphatic carboxylic acids, aromatic sulfonic acids, and glycol ether solvents, to the preparation thereof, a...	01/25/2005
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
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
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
5342916	Condensation polymers of sulfonated phenols, urea, other organic nitrogen-bases, and formaldehyde, and their use as tanning agents and as spraying aids for redispersible polymer powders Condensation polymers of sulfonated phenols, urea, other organic nitrogen-bases and formaldehyde, obtainable by (A) sulfonation of phenols with from 1.0 to 1.5 moles of sulfuric acid per mole of phenol and (B) condensation of these sulfonation products with (a...	08/30/1994
5264000	Aqueous solutions of synthetic tanning agents Aqueous solutions of synthetic tanning agents comprising (A) a lithium salt of a synthetic, anionic aromatic tanning agent or the anionic non-condensed precursor thereof, and, as optional components, (B) a water-soluble chromium, aluminum, iron or zirconium salt or...	11/23/1993
5207802	Sulpho group-containing aromatic compounds, their production and use as dispersants or levelling agents in dyeing textiles or tanning leather Compounds and mixtures of compounds obtainable by condensation of sulphonation products of defined alkyl-substituted naphthalenes and sulphonation products of optionally alkyl-substituted diphenylethers with formaldehye and optionally treated with further...	05/04/1993
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
4828570	Tanning agent and a process for its preparation Hides, skins and pelts are tanned by use of a tanning agent which comprises the reaction product of acetaldehyde, formaldehyde and a formylamino compound....	05/09/1989
4822372	Processing for tanning leather An improved process for tanning leather by treating animal skins with a water-soluble melamine-formaldehyde resin in the presence of an acid catalyst towards the end is improved by using a melamine-formaldehyde resin which is at least partially etherified...	04/18/1989
4810252	Process for tanning leather Use of a resin mixture of, or of a mixed resin from, a melamine-formaldehyde resin and an anionically modified melamine-formaldehyde resin for tanning leather. The anionic modification of the melamine-formaldehyde resin is obtained by preparing the resin ...	03/07/1989
4675021	Amphoteric condensates and their use in retanning Amphoteric condensates of the general formula I ##STR1## where A is a benzene or naphthyl radical, B is a radical derived from the group consisting of urea, biuret, dicyanodiamide or melamine, or a mixture of these radicals, X is --CH2 --C...	06/23/1987
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
4403993	Preparation of water-soluble or self-dispersing resin tanning agents Water-soluble or self-dispersing resin tanning agents are prepared by heating from 5 to 30% by weight of melamine, from 15 to 45% by weight of urea, from 20 to 35% by weight (calculated as anhydrous material) of formaldehyde and from 15 to 55% by weight o...	09/13/1983
4390340	Tanning agent, its preparation and its use for retanning Mineral tanned leather is frequently retanned with synthetic tanning agents to improve the fullness and softness, but leather retanned by the prior art methods is difficult to dye in full shades with anionic dyes. According to the invention, condensation ...	06/28/1983
4371637	Mixtures of reaction products based on epoxides, primary amines and fatty acids and of aminoplast precondensates, their preparation and their use as leather dressings Mixtures of (1) reaction products obtained from (a) epoxides, for example polyglycidyl ethers of bisphenol A, (b) primary amines having 2 to 8 carbon atoms and (c) polymerized fatty acids, for example dimerized or trimerized linoleic acids and linolenic a...	02/01/1983
4247293	Sulphonated, aromatic reaction products, processes for their manufacture and their use as substances having a tanning action The invention relates to sulphonated, aromatic reaction products as agents for tanning hides and leather. They are obtained by reacting a sulphonation product, which is previously formed from a diphenyl ether, a phenol and a sulphonating agent, with forma...	01/27/1981
4245996	Condensation products of terphenylsulphonic acids, naphthalenesulphonic acids, bis-(4-hydroxyphenyl) sulphone and formaldehyde Condensation products which are obtained by co-condensation, in an acid aqueous medium, of terphenylsulphonic acids, naphthalenesulphonic acid, bis-(4-hydroxyphenyl) sulphone and compounds which release formaldehyde are used as tanning agents for the prod...	01/20/1981
4150944	Sulphonated, aromatic reaction products, processes for their manufacture and their use as substances having a tanning action The invention relates to sulphonated, aromatic reaction products as agents for tanning hides and leather. They are obtained by reacting a sulphonation product, which is previously formed from a diphenyl ether, a phenol and a sulphonating agent, with forma...	04/24/1979
4134867	Finishing of leather with reaction products of epoxides and fatty acids A process for finishing leather is provided in which the leather is treated with a preparation containing (1) a reaction product of (a) an epoxide and (b) a dimerized or trimerized fatty acid and (2) an etherified aminoplast precondensate. The treated leather is th...	01/16/1979
4074968	Retanning and fatliquoring agent Sulfonated resins useful as retanning and fatliquoring agents are obtained by sulfonation of a condensation product of (a) one mole of a hydroxy aromatic component, (b) from about 0.05 to 1.5 mole of an unsaturated oil and (c) about 0.4 to about 1.0 mole ...	02/21/1978
4018559	Non-rewet leather and method of producing same The present invention relates to the treatment of leather and more particularly to a novel non-rewet dry cleanable leather, and the treatment method by which it is produced. The water-resistance property of a leather which has been treated with a polymeri...	04/19/1977
4009996	Reaction products of phenolsulphonic acid-urea-formaldehyde as tanning agents and process for their manufacture The invention relates to reaction products of phenolsulphonic acid-urea-formaldehyde as agents for tanning of skins or leather. They are manufactured from a hydroxyphenylsulphone-hydroxyphenyl-monosulphonic acid which is condensed with an alkoxybenzene, t...	03/01/1977
3973904	Water-soluble synthetic tanning agents Water-soluble synthetic tanning agents composed of formaldehyde condensation products of non-sulfonated aromatic hydroxy compounds or the sulfomethylation products thereof with aromatic sulfonic acids or with the formaldehyde condensation products of said...	08/10/1976
3934975	Leather treating process Leather treating compositions are prepared which comprise condensed or polymaric alkyl phenol phosphates generally and more particularly an alkylphenol-polyphenol condensate subsequently alkoxylated and phosphated. These compositions may be utilized for l...	01/27/1976

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Class 8/94.24 - With aldehyde-aromatic condensation product