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| Number | Title | Issue Date |
| 8187342 | Process for indigo dyeing of wool and wool blends A process for indigo dyeing of wool and wool blends comprising the steps of subjecting the wool and wool blends to a step of pretreatment by impregnation with a shrink resistance agent, subjecting the pretreated wool and wool blend yarns to the step of indigo dyeing... | 05/29/2012 |
| 7892297 | Cyanin-type compounds having an alkynyl linker arm Cyanine-type fluorescent dyes modified with an alkynyl linker arm of formula (I), suitable for the conjugation of biomolecules, such as for example nucleosides, nucleotides, oligonucleotides, nucleic acids, proteins, peptides, vitamins and hormones. A method and int... | 02/22/2011 |
| 7425235 | Color compositions and methods of manufacture The present invention includes a paint or coating composition comprising an organic pigment or dye complexed to the surface of a layered or fibrous inorganic clay. A wide variety of paint colors can be obtained by varying the pH during the preparation as well as by ... | 09/16/2008 |
| 7235110 | Method for dyeing fabric materials with indigo, other vat dyes, and sulfur dyes A method for surface dyeing a range of textile materials, in the form of yarn, fabric, or garments, includes: a) preparing a dyebath including dye particles and an additive, such as an anionic acrylic copolymer, causing the particles to become charged; b) preparing ... | 06/26/2007 |
| 7201780 | Method for dyeing textiles A method for dyeing textiles with reducible dyes in the presence of borohydride and bisulfite. ... | 04/10/2007 |
| 7052541 | Color compositions The present invention includes a paint or coating composition comprising an organic pigment or dye complexed to the surface of a layered or fibrous inorganic clay. A wide variety of paint colors can be obtained by varying the pH during the preparation as well as by ... | 05/30/2006 |
| 6997962 | Method for dyeing cotton with indigo A method for dyeing a cellulosic material, such as cotton or a blend including cotton, in the form of yarn, fabric, or garments, includes: a) preparing a dyebath including particles of indigo and an additive, such as an anionic acrylic copolymer, causing the particl... | 02/14/2006 |
| 6942706 | Vat acid dyeing of textile fibers A process for dyeing certain textile fibers, utilizing vat acid dyeing and specific additional (second) reducing agents such as α-hydroxyalkylsulfinic acids, their salts and 1,2,4-trithiolane, resulting in excellent depth of shade and washfastness, is provided.... | 09/13/2005 |
| 6905524 | Method of continuously dyeing nonwoven fabrics and the products thereof It is the objective of the present invention to disclose a method of continuously dyeing durable nonwoven fabrics, and more specifically, nonwoven fabrics comprising a cellulosic fibrous material dyed with indigo dyestuffs. It is in accordance with the present inven... | 06/14/2005 |
| 6814763 | Mediator systems based on mixed metal complexes, used for reducing dyes Mediator systems obtainable by mixing one or more salts of a metal capable of forming a plurality of valence states with at least one amino-containing complexing agent (K1) and at least one hydroxyl-containing but amino-devoid complexing agent (K2) in an alkaline aq... | 11/09/2004 |
| 6802873 | Method for producing dyed textile materials consisting of polyester and polyamide The invention relates to a method for producing dyed textile materials consisting of polyester and polyamide. The textile material is dyed by means of pigments or a disperse dye that stains polyester. Surplus dye is removed. The polyamide portion is dyed using vat d... | 10/12/2004 |
| 6797015 | Method for producing transparent, colored cellulose sleeves Process for producing dyed, tubular food wrappings from non-woven fabric coated with regenerated cellulose, characterized in that an alkaline dye liquor containing at least one dye which has been previously converted into an alkali-soluble form by chemical reduction... | 09/28/2004 |
| 6790241 | Mediator systems based on mixed metal complexes, used for reducing dyes Mediator systems obtainable by mixing a salt of an electrochemically active complexing metal (M1) capable of forming a plurality of valence states with a hydroxyl-containing complexing agent, which may likewise be present as salt, and with a salt of an electrochemic... | 09/14/2004 |
| 6780205 | Vat acid dyeing of textile fibers A process for dyeing certain textile fibers, utilizing vat acid dyeing and specific additional (second) reducing agents such as α-hydroxyalkylsulfinic acids, their salts and 1,2,4-trithiolane, resulting in excellent depth of shade and washfastness, is provided.... | 08/24/2004 |
| 6521000 | Process for forming scrubbed stretch denim fabric A woven fabric formed of dyed blended cotton/polyester warp yarns and polyester stretch fill yarns is finished by passing the fabric through a brusher and singer and then through a finishing pad box to apply the finish. Immediately after application of th... | 02/18/2003 |
| 6428581 | Concentrated leucoindigo solutions Concentrated leuco indigo solutions useful for dyeing cellulosic textile material consist essentially of from 25 to 55% by weight of leuco indigo in the form of the leuco indigo salt, an amount which is essentially stoichiometrically sufficient to convert... | 08/06/2002 |
| 6302925 | Process and composition of sulfur dyes A process for dyeing fibrous substrates which comprises the steps of: providing a fibrous substrate; providing at least one sulfur dye; providing at least one reduction stable direct dye; and applying said reduction stable direct dye and sulfur dye to sai... | 10/16/2001 |
| 6129769 | Enzymatic methods for dyeing with reduced vat and sulfur dyes The present invention relates to methods for dyeing a material, comprising (a) treating the material with a dyeing system which comprises one or more reduced vat dyes and/or one or more reduced sulfur dyes; and (b) oxidizing the one or more reduced vat dy... | 10/10/2000 |
| 6123741 | Process for dyeing a textile material with indigo and arrangement for conducting the process The invention relates to a process for dyeing a thread with indigo, characterized in that it comprises the following steps: a. prewashing a thread F by passing it through a prewash arrangement (1) comprising two or more tanks (2) containing a prewash solution ... | 09/26/2000 |
| 6093221 | Process for reducing sulfur and vat dyes This invention concerns a process for reducing dyes of the group consisting of sulfur and vat dyes. The reduction is carried out in an aqueous alkali medium using isomaltulose or a mixture containing isomaltulose as the reducing agent.... | 07/25/2000 |
| 6090166 | Process for dyeing a textile material with indigo using indoxyl, and system for exploiting the process The invention relates to a process for dyeing a textile fabric with indigo by using indoxyl which comprises the following stages: a. pre-washing a thread F by passing it thorough a pre-wash system (1) composed of two or more vats (2) containing a pre-wash solu... | 07/18/2000 |
| 6007587 | Leuco vat dye preparations in granule form Granules comprising as essential constituents a leuco vat dye, an alkali metal hydroxide and a mixture of from 10 to 100% by weight of an -hydroxy-C1 -C4 -alkylsulfinic acid, one of its salts or derivatives and from 0 to 90% b... | 12/28/1999 |
| 6004358 | Batchwise dyeing of cellulosic textile material with indigo by the exhaust method The disclosure is a process for batchwise dyeing of cellulosic textile material with indigo by the exhaust method, which comprises applying the reduced indigo to the textile material from an aqueous dyeing liquor which includes a reductant, an alkali and ... | 12/21/1999 |
| 5989296 | Solvent process for recovering indigo dye from textile scrap A process for recovering a vat dye from a textile using a heated organic solvent. The textile is contacted with a heated organic solvent in which the dye is soluble until dye is extracted from the textile into the solvent to produce a dye-containing solve... | 11/23/1999 |
| 5984980 | Process for continuous dyeing in a single operation of cellulose-containing yarn with indigo Continuous dyeing of cellulose-containing yarn with indigo in a single operation is disclosed, in that the reduced indigo from an aqueous dye liquor containing reducing agents, alkali, and additionally a further dissolved alkali metal salt in a concentrat... | 11/16/1999 |
| 5948122 | Enzymatic methods for dyeing with reduced vat and sulfur dyes The present invention relates to methods for dyeing a material, comprising (a) treating the material with a dyeing system which comprises one or more reduced vat dyes and/or one or more reduced sulfur dyes; and (b) oxidizing the one or more reduced vat dy... | 09/07/1999 |
| 5935273 | Process for continuous dyeing of cellulose-containing yarn with indigo in a single application while controlling the pH value A process for continuous dyeing of cellulose-containing yarn with indigo in a single passage applies reduced indigo from an aqueous dye liquor containing deoxidants, alkali and a dissolved alkali metal salt at a concentration of 100 to 200 g/l as an elect... | 08/10/1999 |
| 5888254 | Leuco vat-dye preparations in granule form Granular leuco vat-dye preparations containing, as essential components, leuco vat-dye, reducing agents and alkaline metal hydroxide, and the production of said preparations and their use in dyeing cellulose-containing textile materials.... | 03/30/1999 |
| 5861045 | Method of dyeing textiles There is provided a method of dyeing cellulosic and/or wool fibers and fabrics in a dyebath containing a dilute solution of tannic acid and/or tannic acid containing products at a proper pH. An exhaust salt is added to the bath to exhaust the tannic acid ... | 01/19/1999 |
| 5749926 | Method of preparing high activity sulfonated lignin dye dispersants Improved dyestuff compositions comprising a dye cake and a dye dispersant are disclosed wherein the dye dispersant comprises sulfonated or sulfomethylated lignin of increased activity and improved heat stability properties and which dispersants are disclo... | 05/12/1998 |
| 5637116 | Leucoindigo preparatations in granule form Leucoindigo preparations in granule form consisting essentially of leucoindigo and alkali metal hydroxide and production of these preparations and use thereof for dyeing cellulose-containing textile material.... | 06/10/1997 |
| 5611822 | Indigo dye process This invention provides processes for dyeing fibers with indigo including placing the fibers in a substantially enclosed compartment of a commercial dye apparatus, which is equipped with means for introducing a non-oxidizing gas into the compartment; prio... | 03/18/1997 |
| 5586992 | Dyeing cellulose-containing textile material with hydrogenated indigo A process for dyeing celluose-containing textile material with indigo comprises using an aqueous solution of leuco indigo prepared by catalytic hydrogenation and, after the leuco indigo has gone onto the textile material, converting it back into the pigme... | 12/24/1996 |
| 5558677 | Dyeing and printing textile materials made of cellulose fibers A process for dyeing and printing textile materials consisting of cellulose fibers or containing cellulose fibers in a blend with other fibers in an aqueous medium at above pH 12 with vattable dyes in the presence of cyclic compounds which contain at leas... | 09/24/1996 |
| 5518508 | Continuous dyeing of yarns A continuous process for dyeing yarns with vattable dyes comprises, in continuous yarn dyeing ranges, metering an aqueous dye dispersion into the circulating chemical liquor.... | 05/21/1996 |
| 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 |
| 5514187 | Reduced indigo dye penetration Open end spun cotton yarns are ring dyed with a thickened dyebath to limit dye penetration to the outer circumference of the yarn leaving a substantial undyed core. Stonewashed indigo dyed denim fabrics and garments are prepared.... | 05/07/1996 |
| 5494491 | Indigo dye process An improved nonpolluting method of dyeing fibers or fabric, including natural cellulose fibers such as cotton or linen, using indigo dye. The improved process preferably includes pretreating the fibers with a mordant solution, preferably a natural nonpoll... | 02/27/1996 |
| 5403362 | Mordant and method of dyeing fibers An improved mordant solution and process for preparing fibers for dyeing and fixing natural dyes to fibers, particularly but not exclusively cellulose fibers, including cotton and linen, and synthetic fibers, including Rayon.RTM. and Tensel™. The improv... | 04/04/1995 |
| 5378246 | Indigo dye process An improved nonpolluting method of dyeing fibers or fabric, including natural cellulose fibers such as cotton or linen, using indigo dye. The improved process includes pretreating the fibers with a mordant solution, preferably a natural nonpolluting morda... | 01/03/1995 |
