Class 423/281 - Peroxide

Subclass of Class 423 - Chemistry of inorganic compounds
Definition: Processes in which the reactant comprises a peroxide.
No. of patents: 31
Last issue date: 10/17/2006

Number	Title	Issue Date
7122249	Abrasion-resistant agglomerate mineral substance granule, powder comprising such granules and production method therefor Granule comprising an agglomerate of particles of a mineral substance. The agglomerate is coated with a monolithic outer layer, which provides it with improved abrasion resistance. Powder comprising granules according to the invention. Process for manu...	10/17/2006
6773625	Dry bleach compositions Dry bleach compositions particularly suitable for cleaning of hard surfaces or fabrics which, upon mixing with water, form a mixture that is easily removed from surfaces upon standing. ...	08/10/2004
6689334	Process for reducing or avoiding foam production during chemical and physical materials conversion processes The production of foam which occurs in many chemical and physical materials conversion processes can be avoided by performing the materials conversion process in an ascending jet reactor, including a baffle-free container with a tapering lower section, pr...	02/10/2004
5658873	Coated sodium percarbonate particles, a process for their production and detergent, cleaning and bleaching compositions containing them Sodium percarbonate is often used in the form of coated particles to increase its storage stability in detergents. Sodium percarbonate particles coated in accordance with the invention have a coating containing reaction products from the reaction of a dialkali...	08/19/1997
5653950	Process for producing abrasion-resistant sodium perborate monohydrate with high bulk density and high rate of solution Sodium perborate monohydrate having an Oa content of 14 to 16%, a bulk density of at least 600 g/l, an abrasion index (ISO 5937) of less than 8%, and a specific surface of less than 5 m2 /g can be produced by a fluidized bed--sprayin...	08/05/1997
5462692	Stable solid acetylperoxyborate compounds Stable, solid acetyl peroxyborate compounds which are active oxygen-containing compounds derived from acetic acid and boron-oxygen compounds. The compounds of the invention have a peracetic acid content which can be liberated instantly and directly in wat...	10/31/1995
5399328	Process for preparing peroxyborate agglomerates A process is described for preparing peroxyborate agglomerates having an active oxygen content of at least 14% by weight in which amorphous primary particles composed of peroxyborate prepared by a spray drying process are subjected to compacting pressing-...	03/21/1995
5395602	Method for the production of sodium perborate hydrate granulates The invention relates to sodium perborate hydrate granulates and a method for producing sodium perborate hydrate granulates with an available oxygen content of 14 to 18% by weight, especially 15 to 16% by weight; an abrasion index according to ISO test 59...	03/07/1995
5356606	Peroxidic compositions A composition having improved physical stability comprising an aqueous peroxidic solution of an alkali metal oxyboron compound containing alkali metal to boron in a substoichiometric mole ratio into which there has been introduced an effective stabilizing...	10/18/1994
5290476	Process for preparing microcrystalline perborate products A process for preparing microcrystalline perborate hydrate products and highly concentrated, storage stable aqueous solutions used for this purpose which have a stable active oxygen content and a boron content of 3 to 8% by wt. based on the total weight o...	03/01/1994
5229092	Sodium perborate Sodium perborate tetrahydrate in the form of virtually spherical and compact agglomerates of unit particles of sodium perborate tetrahydrate with a maximum size not exceeding 30 m, process for its manufacture, its use in the manufacture of sodium perborat...	07/20/1993
5215730	Production of sodium perborate crystals having improved abrasion resistance A method for improving abrasion resistance of sodium perborate tetrahydrate crystals prepared by reacting sodium metaborate with hydrogen peroxide in an aqueous slurry crystal growth medium, the improvement including highly supersaturating the aqueous slu...	06/01/1993
5203877	Process for producing sodium perborate monohydrate agglomerate A process for producing sodium perborate monohydrate agglomerates or granules in which primary particles of sodium perborate monohydrate produced from sodium perborate tetrahydrate by a dehydration process are subjected to compacting pressing agglomeratio...	04/20/1993
5104631	Process for producing sodium perborate monohydrate, partially crystallized sodium perborate monohydrate, and washing powders for textiles Process for producing sodium perborate monohydrate by dehydration of sodium perborate tetrahydrate using a current of air which is initially damp in a first phase of dehydration then dry in a second phase of dehydration. The sodium perborate monohydrate obtain...	04/14/1992
5094827	High active oxygen content granulated sodium perborate product and method of making the same The spray drying of a solution containing hydrogen peroxide and sodium metaborate to obtain primary particles which are immediately conveyed after leaving the drying zone to a granulating device and are then granulated in the presence of free and/or perbo...	03/10/1992
4968500	Continuous method for preparation of granulated sodium perborate The spray drying of a solution containing hydrogen peroxide and sodium metaborate to obtain primary particles which are immediately conveyed after leaving the drying zone to a granulating device and are then granulated in the presence of free and/or perbo...	11/06/1990
4942025	Process for the manufacture of granular monohydrated sodium perborate Process for the manufacture of granular monohydrated sodium perborate, endowed with abrasion resistance, starting from the corresponding tetrahydrated perborate, characterized in that a carboxylic acid, containing from 1 to 3 C atoms, or an alkali metal s...	07/17/1990
4894211	Process for the production of granular sodium perborate monohydrate having good mechanical strength The invention relates to a process for the production of granular sodium perborate monohydrate having good mechanical strength. The process is characterized in that sodium silicate having an SiO2 /Na2 O molar ratio comprised within t...	01/16/1990
4867956	Active oxygen-rich compound and preparative method There is provided a novel active-oxygen rich lithium, boron, oxygen compound having the empirical formula and a method for making the same....	09/19/1989
4681748	Superoxidized sodium perborate Superoxidized sodium perborate with an active oxygen content of more than 16 wt. % and a specially adapted process for its preparation....	07/21/1987
4298585	Process of making sodium perborate In a process of making sodium perborate, crystallization is performed in the presence of an organic polymer with a high potential content of free carboxylic groups derived from maleic anhydride, selected from the copolymers of maleic anhydride with an org...	11/03/1981
4238464	Air revitalization materials Revitalization of air by circulation thereof through a quantity of a salt zirconium, titanium or boron and oxygen in the peroxide or higher positive valence state and by mixtures thereof with an alkali metal or alkaline earth hydroxide, oxide, peroxide, ...	12/09/1980
4211759	High-density sodium perborate and method of preparation A sodium perborate (NaBO2, H2 O2, 3H2 O) product having approximately spherical particles of size between about 250 and 600 microns, a bulk density between about 0.75 and 1.05 Kg./liter and a superior resistance...	07/08/1980
4185960	Super-oxidized solid sodium perborate and processes for its manufacture Superoxidized solid sodium perborate contains more than 17 wt.% active oxygen and less than 1.4 atoms hydrogen per active oxygen atom. The superoxidized solid sodium perborate in particle form is prepared by simultaneously introducing, into a fluidized be...	01/29/1980
4115069	Sequential ignition system for oxygen generation elements Three chlorate candles are connected to a common conduit to which a normally open pressure switch is connected on the downstream side. The switch closes in response to a flow rate less than its predetermined minimum magnitude of oxygen from each candle fl...	09/19/1978
4115519	Manufacturing process for sodium perborate monohydrate and product obtained according to the process Abrasion resistant granules of sodium perborate monohydrate are made by introducing an aqueous solution containing hydrogen peroxide and an aqueous solution containing sodium metaborate simultaneously into a fluidized bed dryer which contains seeds of a s...	09/19/1978
4086325	Process for drying solutions containing boric acid The process of drying concentrates containing boric acid and/or borates after addition of lime is improved by the addition of an oxidizing agent to the concentrate....	04/25/1978
4071462	Process for preparation of sodium percarbonate or sodium perborate of high specific volume Sodium percarbonate or sodium perborate of high specific volume is prepared by mixing sodium carbonate or sodium borate, or an aqueous solution thereof, with aqueous hydrogen peroxide, in the presence of an anionic surface active agent in an amount exceed...	01/31/1978
4002434	Process for the production of abrasion resistant perborate monohydrate Abrasion resistant sodium perborate monohydrate is prepared by treating sodium perborate monohydrate with at least 5% of water at a temperature of 20° - 90° C. in a moistening unit and then drying at a temperature beginning at 40° C. and increasing to ...	01/11/1977
3985862	Process for the production of sodium perborate Abrasion resistant and coarser sodium perborate tetrahydrate is prepared by reacting an aqueous sodium metaborate solution with aqueous hydrogen peroxide while avoiding free active oxygen and free alkali in the reaction medium. A strongly supersaturated p...	10/12/1976
3975500	Process for producing high active oxygen, low bulk density sodium perborate Sodium perborate having an active oxygen content of about 11.0 to 12.0 weight percent and a bulk density of about 0.40 to 0.70 g./cc. is made by a process comprising (1) agglomerating conventional sodium perborate tetrahydrate with hydrogen peroxide to fo...	08/17/1976

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Class 423/281 - Peroxide