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7192534 |
Low-VOC stuffing agents, the use thereof in the production and/or treatment of leather and skins and corresponding production or treatment method
Agents for the fatliquoring of, in particular, leathers and hides tanned in the absence of chromium comprise
A) at least one modified natural oil and B) at least one stabilizer L n R
where R...
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7033402 |
Transposed process for making leather
The present invention relates to a novel leather making process whereby the post-tanning wet operations are done prior to tanning stage itself to make leather in eco-friendly manner in...
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6916348 |
Dyed leather and method for dyeing tanned leather
Tanned leather is (a) pretreated in an aqueous and alkaline medium either with ammonia, primary amines or a mixture of ammonia and primary amines and then with a polyfunctional organic compound...
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6753369 |
Leather waterproofing formulation and leather goods waterproofed therewith
The present invention relates to novel formulations for water proofing leather, a process for waterproofing leather, and leather goods waterproofed by the formulations and processes of the present...
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6685746 |
Impregnation of leather with micro-encapsulated material
A material is impregnated into leather by incorporating the material into micro-capsules and then applying said micro-capsules to said leather material by means of a suitable process. A roller...
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6395040 |
Process for producing leather
A method for producing leather generally including the steps of: (a) providing wet blue, full grain skins, (b) applying a liquid chrome solution to the skins while at a pH of 3.5 or lower, (c)...
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6033590 |
Compositions for the preparation of leather
Compositions for the simultaneous retanning and fatliquoring of leather are described which may include further leather treatment agents as well.
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5985167 |
Wet treatment of leather hides
Wet leather treating compositions and methods of wet treating leather hides employing alkylpolyglycosides for enhancing the penetration and absorption of the leather treatment formulations in an...
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5980578 |
Process for waterproofing leather at low pH-values and leathers manufactured thereby
The present invention relates to a process for waterproofing leathers, furs and other fibrous materials wherein waterproofing is carried out with conventional water repellents in the presence of...
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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...
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5914442 |
Aqueous solutions or dispersions of copolymers
Aqueous solution or aqueous dispersion of copolymers suitable for the fatliquoring and filling of leather and fur skins are obtained by free-radical copolymerization of A 1 ) C 6 -C 40 ...
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5853427 |
Use of polymerizable oil for leather fatliquor
Novel fatliquoring compositions used for treating mineral-tanned leathers are effective substitutes for oils which have conventionally been used to soften leather. The compositions comprise...
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5807409 |
Method of improving pull-up characteristic of leather substrate and modified finishing oil used therein
The present invention provides for a method of improving the pull-up characteristic of a leather substrate darkened with a finishing oil modified by dissolving a modifier in a conventional...
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5741434 |
Leather oiling preparations and their use
The present invention relates to the use of water-dispersible and/or water-emulsifiable amphiphilic co-oligomer of fatty crotonates and radical-copolymerizable hydrophilic ethylenically unsaturated...
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5728313 |
Leather oiling compositions and their use
A method for oiling leather and skins by impregnating the leather and skins with partial esters of cyclic polycarboxylic acids or (partial) anhydrides with monofunctional fatty alcohols and...
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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...
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5709714 |
Method of treating leather with amphoteric polymers
The present invention is directed to a method of treating tanned leather stock to improve its color expression characteristics. The method provides for utilizing a two-stage amphoteric polymers,...
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5702490 |
Water repellent treatment of leather and skins with polysiloxanes functionalized with carboxyl groups in a comb-like manner
Leather and skins are water repellent in aqueous emulsion in the presence of emulsifiers with polysiloxanes which are functionalized with carboxyl groups in a comb-like manner and in which the...
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5686011 |
Process for waterproofing materials having a fibrous structure and agents used to carry out this process
A process is disclosed for waterproofing materials having a fibrous structure, such as leather, persian leather or leather replacement materials, by using waterproofing agents containing...
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5685880 |
Leather modifier, process for modifying leather and modified tanned leather
A leather modifier containing a compound which is obtainable through a reaction of an ethylene oxide derivative having a fluorine-containing group with a phosphorus compound is disclosed. A leather...
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5683611 |
Preparations for the oiling of leather
Aqueous dispersions containing special aminopropionic acid derivatives and co-oligomers based on fatty crotonates are suitable for the oiling of leather. The leathers thus treated are distinguished...
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5660759 |
Cationic formulations for oiling leathers and skins
The process of oiling leathers and furs by contacting the leathers and furs with an oiling composition containing esterquats corresponding to formula (I): ##STR1## in which R 1 CO is an acyl...
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5620748 |
Use of graft polymers for fatliquoring and filling leather and fur skins
Soft leathers with a pleasant hand are obtained on fatliquoring and filling leather and fur skins with water-soluble or water-dispersible graft polymers of vegetable and animal oils, obtainable by...
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5575939 |
Process for softening/stuffing leather and fur skins
The invention relates to a process for the fat liquoring/softening of leathers and furs by treatment with an aqueous dispersion of a copolymer obtainable by polymerization of a) maleic anhydride,...
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5571443 |
Synergistic combination of 2-(thiocyanomethylthio)benzothiazole and thiophanate compounds useful as fungicides
A method for preventing the deterioration of leather by controlling the growth of fungus, wherein the leather is contacted with TCMTB and a thiophanate compound present in a combined amount...
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5558675 |
Process for aftertreating tanned leather and pelts
A process for aftertreating tanned leather and pelts to impart a very soft and supple handle and good fullness to them, which comprises subjecting the leather or pelts to an aftertreatment with a...
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5554306 |
Sulfited fatty compounds with a reduced content of free hydrogen sulfite
Sulfited fatty compounds having a reduced content of free hydrogen sulfite are prepared by blowing unsaturated fatty compounds in an oxygen atmosphere at 100° C. to 150° C., sulfiting the blown...
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5529704 |
Leather fat-liquoring agents
The present invention relates to a process for the preparation of a fat-liquoring compositions based on oxysulfited oils of animal and/or vegetable origin, the fatty substances employed containing ...
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5527360 |
Fatliquoring, filling and hydrophobicizing leathers and furs
A process for fatliquoring, filling and hydrophobicizing leathers and furs, comprises using ene adducts of maleic anhydride with unsaturated fatty acids of from 12 to 24 carbon atoms or their C 1 ...
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5525120 |
Degreasing process
The invention is a process for degreasing animal skins in which the animal skin to be degreased is contacted with a mixture of a predominantly saturated C 12 -C 18 fatty alcohol ethoxylate having...
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5501707 |
Aqueous dispersions of new amphiphilic co-oligomers for the washing- and cleaning-resistant oiling of leather and skins and their use
The invention is a process for oiling of leather and skins which imparts washing and dry-cleaning resistance to the treated leather and skins and a composition useful in the process. The washing...
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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...
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5476517 |
Use of guerbet alcohols for preventing fatty spew on leather
The present invention relates to a composition and process for inhibiting fatty spew on leather comprising an oiling component in combination with a Guerbet alcohol having the general formula I: ...
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5468255 |
Use of nonionic organic dialkyl compounds for preventing fatty spew on leather
The present invention relates to a fatty spew inhibiting composition for leather comprising an oiling component in combination with a dialkyl ether additive corresponding to general formula II: R...
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5464451 |
Re-tanning process
A process for the re-tanning of tanned leather or pelt, wherein the tanned leather pelt is re-tanned with (A) a polymeric carboxylic acid, containing α-hydroxyacrylic units as constituent units of...
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5457835 |
Leather
Leather products that are well lubricated, impermeable and water-repellent are produced by impregnating tanned leather under alkaline conditions with an aqueous emulsion of an emlsifier carboxylic...
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5433753 |
Use of copolymers having polysiloxane units in the treatment of leather and furs
The present invention discloses the use of polymers which have built-in by polymerization 20 to 70%-wt. of a hydrophobic monomer selected from long-chain alpha-olefins, long-chain...
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5433752 |
Use of rection products of Homo- or copolymers based on monoethylenically unsaturated dicarboxylic anhydrides with amines or alcohols for fatliquoring and filling leather and fur skins
Products useful for fatliquoring and filling leather and fur skins are obtained on reacting A) homo- or copolymers based on monoethylenically unsaturated dicarboxylic anhydrides and obtainable...
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5425784 |
Polymeric tanning agents
Water-soluble graft polymers of monosaccharides, oligosaccharides, polysaccharides and derivatives thereof, obtainable by free radical polymerization of A) a monomer selected from, or a monomer...
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5417723 |
Use of ester urethanes for retanning
The present invention relates to a process for retanning chrome-tanned leather comprising applying to leather a reaction product of (a) at least one glycerol monoester of a saturated C 12 -18...
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5368609 |
Softening filler for leather
The invention is an aqueous softening filler for leather and a process for softening leather which utilizes the softening filler. The softening filler comprises thermoexpansible microcapsules. The...
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5300121 |
Process for the treatment of wool skins
A method of tanning an animal skin with wool or hair attached thereto wherein the animal skin is pickled in an acidic solution and thereafter tanned in a solution containing at least one tanning...
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4975090 |
Process for the preparation of room temperature flowable derivatives of natural fats and oils and their use
The present invention relates to a process for the production of derivatives of natural fats and oils that is characterized in that fats that are solid at room temperature or which contain solid...
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4903362 |
Sulfited fats as oiling agents for leather and skins
Sulfited fats prepared by oxidation of fats with oxygen-containing gas mixtures and simultaneous or subsequent sulfitation using alkali and/or ammonium hydrogen sulfites, wherein the fats used are...
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4780222 |
Compositions containing phosphoric acid partial esters useful for fatting tanned leather
A water soluble or water dispersible composition containing (a) at least one phosphoric acid partial ester (b 1 ) at least one mono- or di-(C 2 -3 alkylene) glycol mono-(C 1 -4 -alkyl) ether...
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4755187 |
Method for producing waterproof leather
A process for leather tanning having the improvement of imparting waterproof properties to the leather by incorporating a sulfosuccinic monoester in the fatliquor.
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4741738 |
Sulfonation of fats and oils
A process for the sulfonation of certain fat and oil mixtures, the product of such process, and a method for using such product as a leather tanning stuffing agent, the certain fat and oil mixtures...
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4705586 |
Method of working leather for the uppers of leather footwear
A method of working leather, in which a deposit of material adhering to the leather is made on the surface of the leather to enable a leather footwear upper treated in this way to adhere to a sole...
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4654042 |
Sulfonated lubricating agents for leather and furs process therefore
This invention relates to sulfonated lubricating agents for leather and furs. More specifically, this invention relates to a process for the production of sulfonated lubricating agent for leather...
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4539006 |
Leather treatment
Composition useful for treating leather, textiles, and cellulosic materials to impart a high degree of water and oil repellancy thereto. The composition contains a fluorochemical compound having...
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