Nitrogen Patents (Class 8/631)
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Patent number: 8864850Abstract: Dye mixtures comprising at least one dye of formula together with at least one dye from the group of formulae wherein the radicals have the definitions given in the claims, are suitable for dyeing or printing cellulose-containing fiber materials, while at the same time exhibiting good build-up behavior, and yield dyeings of deep shade having good fastness properties.Type: GrantFiled: January 23, 2013Date of Patent: October 21, 2014Assignee: Huntsman International LLCInventors: Athanassios Tzikas, Georg Roentgen
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Patent number: 6648925Abstract: The present invention relates to a composition for coloring keratin fibers and a method of using the same. The composition of the present invention contains at least one dye precursor, and one or more clathrate compounds that contain transition metal complexes.Type: GrantFiled: September 25, 2001Date of Patent: November 18, 2003Assignee: Henkel Kommanditgesellschaft auf Aktien (Henkel KGaA)Inventors: Bernd Mayer, Peter Kuhm, Horst Hoeffkes, Gertrud Ewald, Hans-Oscar Stephan, Melita Heller
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Publication number: 20020032939Abstract: The invention relates to the compacted granular products of a mixture ofType: ApplicationFiled: August 17, 2001Publication date: March 21, 2002Inventors: Walter Dumler, Paolo Balliello
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Patent number: 5873912Abstract: Improved processes for the exhaust dyeing of cellulosic fibers with sulphur dyes in the presence of non-sulphide reducing agents wherein the dyeing of the textile substrate is performed in a closed vessel in an atmosphere of reduced oxygen level and then oxidizing.Type: GrantFiled: January 28, 1997Date of Patent: February 23, 1999Assignee: Clariant Finance (BVI) LimitedInventor: Mark Stuart Carlough
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Patent number: 5632782Abstract: Improved processes for the exhaust dyeing of cellulosic fibers with sulphur dyes in the presence of non-sulphide reducing agents wherein the dyeing of the textile substrate is performed in a closed vessel in an atmosphere of reduced oxygen level and then oxidizing.Type: GrantFiled: August 23, 1995Date of Patent: May 27, 1997Assignee: Clariant Finance (BVI) Ltd.Inventor: Mark S. Carlough
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Patent number: 5611822Abstract: 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; prior to or following placing the fibers in the compartment, introducing a non-oxidizing gas into the compartment to produce a substantially non-oxidizing atmosphere therein; contacting the fibers with a dye liquor comprising leuco indigo in the compartment such that the leuco (reduced) indigo is taken up by the fibers; and oxidizing the leuco indigo taken up by the fibers to produce a blue color in the fibers.Type: GrantFiled: April 29, 1996Date of Patent: March 18, 1997Assignee: Allegro Natural Dyes LLCInventor: Sally Gurley
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Patent number: 5525123Abstract: This invention comprises a hair dyeing composition based on oxidation dyestuff precursors which dyes and brightens the hair containing, besides at least one developing and at least one coupling agent, at least one metal salt and at least one ammonium compound selected from the group ammonium chloride, ammonium sulfate, ammonium carbonate, ammonium bicarbonate, and ammonium carbamate, having a pH-value between 8 and 11, preferably from 9 to 10, after admixture with an oxidizing agent in the ready-to-use preparation.Type: GrantFiled: September 8, 1994Date of Patent: June 11, 1996Assignee: Goldwell ACInventors: Heribert Lorenz, Daisuke Misu
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Patent number: 5494491Abstract: 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 nonpolluting mordant solution. The fibers are then treated with a reduced indigo liquor in an inert atmosphere, preferably nitrogen. The indigo is then oxidized by flooding the dyed fabric with water. This indigo dye process can be adapted to conventional garment, package and piece dye processes and machinery, which has not been possible with existing indigo dye processes. The improved process results in a consistent and even dyed material which is color and washfast.Type: GrantFiled: December 23, 1994Date of Patent: February 27, 1996Assignee: Allegro Natural Dyes LLCInventor: Sally Gurley
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Patent number: 5378242Abstract: A liquid alkali for use in soaping off of cotton and cotton blended fabrics. The liquid alkali is a water-based solution of an alkali metal hydroxide and an alkali metal silicate. Preferably the composition is an aqueous mixture of potassium hydroxide and sodium silicate. In the most preferred embodiment the composition includes 35 wt % potassium hydroxide at a 45 wt % concentration, 25 wt % sodium silicate at 50.degree. Baume, and the balance water. In an alternative embodiment, up to 5 wt % of a borate is added.Type: GrantFiled: December 22, 1992Date of Patent: January 3, 1995Assignee: Apollo Chemical CompanyInventors: Nick J. Christie, Samuel G. Jones
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Patent number: 4828571Abstract: The present invention provides a non-aqueous process for the dyeing of a dyeable material at an elevated temperature by contacting a dyeable material with a dye composition at an elevated temperature in a non-reactive environment. The dye composition temperature and the time of contact between the dye composition and the dyeable material are sufficient to effectuate the dyeing of the material. The dye composition comprises a substantially non-aqueous solvent and a dyestuff.Type: GrantFiled: May 9, 1986Date of Patent: May 9, 1989Inventors: Ildo E. Pensa, C. Duff Hughes, Nicholas S. Hood, Eugene M. Saunders