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8002846 Method for manufacturing protein filling agent for leather utilizing animal hairs  
Method for manufacturing a protein filling agent for leather utilizing animal hairs. The method includes pre-treating the animal hairs to obtain pre-treated animal hairs, wherein the pre-treating...
7771489 Formulation for use in chrome or chrome-free tannage  
A formulation for use in chrome-free or chrome tanning is proposed, comprising a clay mineral which, after vigorous stirring for 30 minutes in water at 50° C., has a number average particle ...
7753964 Method for producing a leather semi-finished product  
A semifinished leather product is produced from an animal hide by pretanning with the use of a chromium-free tanning agent and of a clay mineral which, after stirring for 30 minutes in water at...
7651531 Bio-tanning process for leather making  
Conventionally skins/hides are tanned with metal-ions and vegetable tannins. Environmental constraints on the discharge of toxic metal-ions and poor biodegradable vegetable tannins in the...
7354457 Tanning agent and curing agent based on dialdehydes  
Tanning agents can be prepared by reacting at least one aldehyde of formula I, with at least one further identical or different aldehyde of formula I, where Z is a single chemical bond,...
7282066 Processes for preparing and using tanning agents and preservatives  
A process for the preparation of aqueous formulations, and aqueous formulations so prepared, the process comprising heating at least one cyclic compound of the formula I in the presence of water...
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...
7226621 Formulation and process for making formulation for preservation of animal and vegetable tissues  
A formulation and process for making a formulation for leather tanning using highly complexed Chrome III salts coupled with polymer complexing agents of medium and low molecular weight in the range...
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 andB) at least one stabilizer LnR where Ra is H or...
7160480 Leather treated with fluorochemicals  
A method of treating leather for imparting soil resistance to the leather by contacting the leather with a fluorinated hydrophobic additive comprising at least one fluorinated urethane or a mixture...
7157017 Fungicidal compositions and methods using cyanodithiocarbimates  
The invention relates to control fungal growth on tanned hides, using cyanodithiocarbimates of formula (I): X is a halogen;R is a substituted or unsubstituted C1–C14 alkyl group, a substituted or u...
7118603 Process for the preparation of a formaldehyde-free synthetic tanning agent  
A process for the preparation of a synthetic tanning agent is disclosed whereby multi functional polymer is polymerized with sulfonated aromatic compound, pretreated with organic ligand to form an...
7060363 Chromium-free, waterproof leather  
Chromium-free leather having a waterproofness, measured as penetration time according to DIN 53338, of at least 30 min.
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...
6953483 Aloe vera processed leather and leather gloves, garments, shoes and sandals made from aloe vera processed leather and a process for making aloe vera processed leather  
An aloe vera re-tanned leather for use in a glove, garment, sandal or shoe. The leather includes tanned leather having an internal fiber matrix. An aloe vera powder of aloe vera particles in a gel...
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.
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...
6652597 N-vinyl-containing polymeric tanning materials  
N-Vinyl-containing polymers obtainable by free-radically initiated polymerization of a monomer or monomer mixture of (A) from 5 to 100% by weight of an N-vinylamide or N-vinylamine,(B) from 0 to...
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)...
6387135 Treatment of hides  
A process and apparatus for the treatment of hides and skins (3). The hide or skin is placed on a support (1, 2) and sealed to the support around the edges of the skin or hide. A treatment liquor...
6322717 Method of processing leather material, leather material thus processed and leather product using leather material thus process  
A processing method of a leather material having grains thereon is disclosed. The processing method of the leather material includes: the first step of sammying a tanned leather material by hand;...
6254644 Biologically degradable leather  
The present invention relates to a process for preparing leather by (I) tanning a pelt with (a) an aldehyde, or (b) a bisulphite-blocked polyisocyanate; (II) optionally, retanning the pelt with (a)...
6179879 Leather impregnated with temperature stabilizing material and method for producing such leather  
The present invention is directed towards a tanned leather product that is impregnated with a plurality of microspheres containing a temperature stabilizing material. The present invention is also...
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.
5948123 Coloring method for hides  
A coloring method, wherein coloring agent or pigment is injected into active cells of an animal hide before the hide is harvested, and a coloring agent injection device with one or more needles,...
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,...
5885302 Leather tanning process  
The present invention refers to a new process meant for chrome and/or vegetable leather tanning. The process proposed by the invention comprises the steps of bating or purging, conditioning, and...
5873908 Alkoxy group containing copolymers and their use in retanning leather  
The present invention relates to alkoxy-groups-containing copolymers of a) 1 to 99%-wt. water soluble ethylenically unsaturated, acid-groups-containing monomers, b) 1 to 50%-wt. monomers having a...
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...
5714560 Water-soluble or water-dispersible graft polymers of proteins as leather tanning agents  
Water-soluble or water-dispersible graft polymers which are obtainable by free-radical-initiated polymerization of(A) a monomer or monomer mixture comprising (a) from 20 to 100% by weight of...
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...
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 R1 CO is an acyl radical...
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...
RE34986 Tanning agent formulation for manufacture of semifinished leather products  
A tanning agent formulation obtained by reacting 1 mole of an aliphatic ω,ω'-dialdehyde having 2-8 carbon atoms in the form of an aqueous solution of about 3-60% strength with about 0.2-4 moles o...
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...
5274078 Process for producing collagen powder  
A collagen powder is obtained by wet-pulverizing a purified animal tissue consisting mainly of collagen in water at a collagen concentration of 1-30% by weight at a water temperature of not more...
5269814 Method of producing a split leather, especially for automotive applications subject to temperature and humidity fluctuations  
Between a chrome tanning step and a fat liquor treatment step, a flesh side split leather is subjected to shaving on both its split and flesh sides to a thickness of 1.1 to 2.5 mm, preferably 1.2...
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...
5250079 Process for the treatment of polyamide or leather substrates with sulpho group-containing aromatic compounds, compositions containing such compounds and their production  
A process for the treatment of fibrous material from aqueous medium in the presence of an application assistant (P) comprising components (a) and (b), in particular for nitrogen-containing...
5103521 Leather treatment agent and its use  
Leather treatment agent containing a mixture a) of a carboxylic acid X--COOH Iwherein X represents --[R--CO--Z--(R'--Z)a ]b --CO--R--COOH 1 or --R"--(Z--R')c --Z--CO--R--COOH 2and the symbols have...
5002584 Seasoning agents for leathers and leatherlike materials  
Seasoning agents for leather and leatherlike materials contain solutions of cellulose acetobutyrate having a butyryl content≥45% by weight.
5002566 Calcification mitigation of bioprosthetic implants  
Calcification resistant bioprosthetic implants are made from tanned biological materials, such as porcine heart valves, bovine pericardium, human dura mater or the like, which has been impregnated...
4978361 Economy chrome tanning  
Process for economy chrome tanning, which comprises pretreating the pelt prior to tanning with 0.5 to 2% by weight, preferably 0.7 to 1,2% by weight, of an aldehyde- or keto-carboxylic acid,...
4963156 Tanning agent and process  
A leather tanning agent for use as a sole tannage or with another includes Al (III) ions, Ti (IV) ions and an organic masking agent in specific proportions. The ratio of Ti:Al expressed as metal...
4946471 Adhesion promoter for leather finishing  
Copolymers of (A) monomers containing amino groups and corresponding to general formula (I) ##STR1## in which each of R1 and R2 independently represents a hydrogen or a methyl group; Z represents...
4938779 Chrome tanning of leather with reduced waste of chromium  
The efficiency of chromium utilization in chrome tanning of hides to make leather is greatly improved by performing the preliminary neutralization of the acid tanning liquor in the presence of an...
4937009 Leather tanning process using aluminium (III) and titanium (IV) complexes  
In a leather tanning process, animal skins are treated with a tanning agent comprising an aluminium (III)/titanium (IV) mixed complex with a salt of a polyhydroxymonocarboxylic acid as a masking...
4889811 Methods for making leather  
Methods for making leather from animal hides and skins in the presence of surface active agents wherein certain phosphonic acid compounds are used in place of, or in combination with, known surface...
4877410 Process for tanning fish skin  
Fish skins are successively treated in a rotatable apparatus with cold salt water, a distinfectant, an emulsifying agent, salt water, formic acid and chromium and then allowed to dry to produce...
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.
Matches 1 - 50 out of 149 1 2 3 >