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| Number | Title | Issue Date |
| 7163564 | Method for brightening virgin mechanical pulp A method for brightening virgin mechanical pulp. The method comprises combining: (i) an aqueous solution comprising sodium borohydride and sodium hydroxide; and (ii) an aqueous solution comprising sodium bisulfite, in a chemical mixer and adding output of the chemic... | 01/16/2007 |
| 7037474 | Use of sulfide-containing liquors for removing mercury from flue gases A method and apparatus for reducing and removing mercury in industrial gases, such as a flue gas, produced by the combustion of fossil fuels, such as coal, adds sulfide ions to the flue gas as it passes through a scrubber. Ideally, the source of these sulfide ions m... | 05/02/2006 |
| 5952066 | Transparent package with aliphatic polyketone oxygen scavenger A substantially transparent package or preform made of a polymer composition including an aliphatic polyketone as an oxygen scavenger having the formula ##STR1## where n is the number of repeating units and R is hydrogen, an organic side chain, ... | 09/14/1999 |
| 5759653 | Oxygen scavenging composition for multilayer preform and container An oxygen scavenging composition, method of making the same, and multilayer container structures thereof which enable accelerated activation of the oxygen scavenging property and/or barrier layers to prevent depletion of the oxygen scavenging property. In... | 06/02/1998 |
| 5211872 | Composition for detoxifying ammonia and chloramine in aquatic environments and method of making the same The present invention is a solution for detoxifying contaminants, such as ammonia, chlorine and chloramine, in aquatic systems. The solution includes a composition of an amine-based ammonia detoxifying compound, in an amount effective to detoxify substant... | 05/18/1993 |
| 5114698 | Method for stabilizing sodium dithionite A method of stabilizing sodium dithionite is disclosed which comprises exposing a quantity of sodium dithionite to a quantity of amino material under pressure, wherein the partial pressure of amino material is at least 0.5 atmospheres.... | 05/19/1992 |
| 5041232 | Sulfonimines as bleach catalysts Novel bleach catalysts, a method for bleaching substrates using these catalysts and detergent compositions containing the catalysts are reported. The catalysts are sulfonimines. Substrates such as fabrics may be bleached in an aqueous solution containing ... | 08/20/1991 |
| 4729886 | Method of preparing reproducibly stable aqueous suspensions of sodium dithionite for woodpulp bleaching Aqueous sodium dithionite slurries or suspensions, which are nonsettling during shipment thereof and are thereafter pumpable after storage at 32°-40° F. for at least fourteen days, comprise, on a weight basis, about 34% of sodium dithionite, about 0.17%... | 03/08/1988 |
| 4676961 | Stabilized water-containing sodium dithionite formulations which have been rendered alkaline Stabilized water-containing sodium dithionite formulations which have been rendered alkaline have the consistency of a pumpable paste. They additionally contain readily soluble sodium salts and/or potassium salts which are inert to sodium dithionite and w... | 06/30/1987 |
| 4490330 | Sulphur dioxide-liberating, sterilizing composition and method of using same A composition which is capable of releasing sulphur dioxide in the presence of water over an extended period contains a sulphur dioxide-liberating compound and hydroquinone. The composition may also contain thio urea and/or a phosphate buffer. The composi... | 12/25/1984 |
| 4357256 | Sodium hydrosulfite composition A bleaching composition comprises sodium hydrosulfite, hexamethylenetetramine and a water soluble sulfite such as sodium sulfite or ammonium sulfite, or further a polyphosphate such as a pyrophosphate or a tripolyphosphate and is used in bleaching pulp wi... | 11/02/1982 |
| 4283303 | Process for manufacture of stable sodium dithionite slurries Substantially stable slurries containing 30-35% by weight of sodium dithionite are manufactured by evaporating sodium dithionite solutions while maintaining the heating medium at 220°-250° F. and the solution and slurry at 110°-155° F. under a vacuum ... | 08/11/1981 |
| 4082683 | Cleaning of hard surfaces An improved dithionite composition suitable for preparing stock solutions comprising a dithionite, e.g., sodium dithionite, and at least 5% by weight of a water-soluble sulphite, e.g., sodium sulphite. The composition may further contain a metal-complexin... | 04/04/1978 |
| 3985674 | Stabilized sodium dithionite solutions Sodium dithionite bleaching solutions for groundwood pulps which require no additional chemicals for pH adjustment prior to direct application to the pulps, based on zinc-derived or formate-derived sodium dithionite and containing small percentages of at ... | 10/12/1976 |
| 3960649 | Wood pulp bleaching composition containing sodium hydrosulfite and hexamethylenetetramine An aqueous composition for bleaching wood pulp containing sodium hydrosulfite, and at least 2 weight percent hexamethylenetetramine based upon the weight of sodium hydrosulfite, wherein the solution has a pH between about 4 and about 11. The hexamethylene... | 06/01/1976 |
