Abstract: Process for the production of aldehydes or ketones by oxidative cleavage of olefinic double bonds by means of a coordination complex of a ligand and a peroxo derivative of a metal of group 6b.Aldehydes and ketones obtained by said process are used among others as intermediates in the synthesis of organic products.
Type:
Grant
Filed:
May 20, 1988
Date of Patent:
August 22, 1989
Assignee:
Interox (Societe Anonyme)
Inventors:
Sandro Campestrini, Fulvio Di Furia, Giorgio Modena, Lucia Pasquato
Abstract: Secondary amines are oxidized with hydrogen peroxide in the presence of a catalyst chosen from derivatives of zinc or cadmium.The process is applied to the preparation of di-substituted N,N-hydroxylamines such as N,N-diethylhydroxylamines and N,N-di-n-propylhydroxylamine.
Abstract: Process for the delignification of cellulosic substances comprising:a first stage of treatment of cellulosic substances with an acida second stage of treatment with hydrogen peroxide in an alkaline mediuma third stage of digestion in the presence of at least one chemical reactant chosen from hydroxides of alkaline or alkaline-earth metals.The process applies to the treatment of wood fragments.
Abstract: Process for the delignification of cellulosic substances comprising:a first stage of treatment of cellulosic substances with an acida second stage of treatment with hydrogen peroxide in an alkaline mediuma third stage of digestion in the presence of at least one chemical reactant chosen from sulphur-containing compounds and oxygen.The process applies to the treatment of wood fragments.
Abstract: Hydrogen peroxide (8) is introduced at the interface of an anode (5) and an alkaline anolyte (3) of a fuel cell containing, in addition, an acid catholyte (4), isolated from the anolyte by a separator which is permeable to ions (2).
Type:
Grant
Filed:
July 9, 1987
Date of Patent:
November 8, 1988
Assignee:
Interox (Societe Anonyme)
Inventors:
Daniel Tytgat, Marianne Reignier, Francois Dujardin
Abstract: A continuous process for the production of a gaseous product (12), and as a liquid byproduct (16), at the same time by reacting a liquid reagent in a reactor (4) is disclosed. The positive difference between the pressure at the entrance to and an pressure at the outlet of the reactor (4) is kept constant. The process can be used to generate oxygen by decomposition of hydrogen peroxide and this oxygen can be used in welding and cutting sets.
Abstract: Quaternary ammonium compounds having the general formula: ##STR1## in which, R.sub.1 is an alkyl or aryl group, unsubstituted or substituted by at least two ester groups;R.sub.2, R.sub.3 and R.sub.4 are alkyl, aryl, aryl alkyl or alkyl aryl groups substituted by ester groups comprising no more than 10 carbon atoms;m, r and n are whole numbers;A.sup. .circle.r- is an anion such that m.times.r=n. The compounds are obtained by treatment of a tert.alcohol-amine with an alkylating or arylating agent and an acylating agent. They may be used as activators of persalts in wash compositions.
Abstract: An appliance for continuous production of a gaseous product (12), and a liquid byproduct (16), at the same time by reacting a liquid reagent in a reactor (4). The positive difference between the pressure at an entrance to and the pressure at an outlet of the reactor (4) is kept constant. The appliance is used to generate oxygen by decomposition of hydrogen peroxide and this oxygen can be used in welding and cutting sets. The appliance includes a reactor comprising a horizontal reaction zone connected to a horizontal gas collection zone, located above the reaction zone, by vertical conduits.
Abstract: Process for the treatment of waste water and gases containing dialkyl disulphides by catalytic oxidation of these compounds by means of a peroxide compound in an aqueous medium. Divalent copper ions are used for the catalyst and the medium is kept at a pH below 6.5.
Abstract: Cellulosic materials and more particularly wood shavings, pulps, and cellulosic textile fibres are exposed to the combined action of microwaves and at least one oxidizing agent.In particular, the process makes it possible to improve the brightness of the end product.
Type:
Grant
Filed:
September 13, 1984
Date of Patent:
March 18, 1986
Assignee:
INTEROX (Societe Anonyme)
Inventors:
Jacques Hageman, Lucien Plumet, Marcel Robberechts
Abstract: The food compositions for pigs contain calcium peroxide. Calcium peroxide is administered to the pigs via the oral route in a proportion of 0.02 to 1.3 % by weight of the total food ration.The percentage of lean meat and the quality of the carcasses are thus substantially improved.
Abstract: Process for the treatment of waste water and gases containing dialkyl disulphides by catalytic oxidation of these compounds by means of a peroxide compound in an aqueous medium. Divalent copper ions are used for the catalyst and the medium is kept at a pH below 6.5.
Abstract: Process for the stabilization of particles containing peroxygen compounds and bleaching compositions containing particles stabilized according to this process. The particles containing peroxygen compounds are kept in a fluidized bed. A coating agent which is insoluble in water and melts at low temperatures is introduced in the form of solid particles into the fluidized bed. The fluidized bed is kept at a temperature at least equal to the melting point of the coating agent.
Abstract: Process for inhibiting the corrosion of equipment made of titanium or of alloys containing titanium by a solution containing a peroxy compound. To effect the inhibition, a solution containing calcium, strontium or barium ions is used.
Abstract: A process for the production of carboxyl compounds such as caprolactones, in which the corresponding carbonyl compounds are oxidized with hydrogen peroxide in the presence of a catalyst in a substantially anhydrous liquid medium. The water formed by the reaction and any water introduced into the reaction mixture are removed from the reaction mixture.
Type:
Grant
Filed:
June 5, 1980
Date of Patent:
October 12, 1982
Assignee:
INTEROX (Societe Anonyme)
Inventors:
Andre Lecloux, Claude Declerck, Franz Legrand
Abstract: A process for the preparation of coated seeds, in which the seeds are initially treated with an aqueous phase. The treated seeds are then coated with a coating agent containing a peroxide compound and a hydrophilic polymer, and the coated seeds are dried.
Abstract: Process for reclaiming waste paper without deinking which involves pulping the waste paper in the presence of soft water and then adding to the pulp thus obtained a compound capable of liberating, in aqueous solution, ions with a positive charge equal to or greater than 2.
Abstract: Particles of peroxygenated compounds stabilized with polymers, possessing hydroxyl groups and carboxyl groups, which contain monomeric units of the formula ##STR1## where R.sub.1 and R.sub.2 represent hydrogen or an alkyl group containing from 1 to 3 carbon atoms and where M represents hydrogen, an alkali metal atom or an alkaline earth metal atom M-. The particles can be used in compositions having a bleaching action.
Type:
Grant
Filed:
June 18, 1980
Date of Patent:
May 11, 1982
Assignee:
Interox (Societe Anonyme)
Inventors:
Jean Brichard, Jean-Claude Colery, Pierre Sarot