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| Number | Title | Issue Date |
| 5831134 | Continuous production process of tertiary alcohols by radical addition of secondary alcohols to alkenes A process is disclosed for producing tertiary alcohols by radical addition of secondary alcohols to alkenes. The reaction is carried out as a continuous process in the presence of an organic peroxide as a radical initiator and during a mean contact time o... | 11/03/1998 |
| 5488177 | Method for the preparation of alkyl hydroperoxide solutions containing little or no water A method is described for the preparation of solutions containing little or no water of tertiary alkyl hydroperoxides in inert solvents by dewatering with sulfuric acid, according to which one or more inert organic solvents are added to an aqueous solutio... | 01/30/1996 |
| 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 |
| 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 |
| 5268440 | Process for the preparation of polyethylenes For the preparation of polyethylenes using a diphenyl ethane derivative as C-C labile polymerization initiator, 1 to 40 mole 3,4-dimethyl-3,4-diphenyl hexane, based on 1 million mole ethylene used, are polymerized at 260° to 400° C. at a pressure of 60,... | 12/07/1993 |
| 5244644 | Process for improving the storage stability of percarbonate and percarbonate composition produced thereby A process for producing an alkali metal carbonate peroxyhydrate having improved storage stability by mixing particles of an alkali metal carbonate peroxyhydrate with an effective storage stability improving amount of a powdered fatty acid metal salt.... | 09/14/1993 |
| 5232680 | Method for purifying hydrogen peroxide for microelectronics uses A method for further purifying previously distilled hydrogen peroxide for use in microelectronics in which a hydrogen peroxide starting solution purified initially by distillation is contacted, after the addition of a small amount of chelating agent, with... | 08/03/1993 |
| 5147628 | Process for producing alkyltetrahydroanthrahydroquinones and working solutions containing them for producing hydrogen peroxide by the anthraquinone process A process is disclosed for preparing alkyltetrahydroanthrahydroquinones in a solvent system suitable for the production of hydrogen peroxide. The resulting alkyltetrahydroanthrahydroquinone solutions can be used directly as working solutions for preparing... | 09/15/1992 |
| 5082543 | Filter press electrolysis cell The present invention provides an electrolysis cell of the filter press type for the production of peroxy and perhalogenate compounds comprising alternatingly arranged cathodes and anodes provided with electrolyte feeds, wherein the cathodes (1) and anode... | 01/21/1992 |
| 5032688 | Process for the preparation of aralkyl hydroperoxides A process for the preparation of aralkyl hydroperoxides having the formula (I) is described ##STR1## in which n=1, 2 or 3, Ar means a phenyl group which can be substituted with halogen or one or more branched or straight chain alkyl groups with 1 ... | 07/16/1991 |
| 4995550 | Valve metal/platinum composite electrode A composite electrode based on a valve metal with a layer of a platinum foil securely adhering thereto is produced by hot isostatic pressing of the valve metal base and platinum foil between separating sheets; the separating sheet which comes in contact w... | 02/26/1991 |
| 4966706 | Process for treatment of clarification sludge The present invention is in a process for the treatment of clarification sludge, wherein a sludge is treated with a per acid containing up to 3 carbon atoms and subsequently allowed to digest in a septic plant.... | 10/30/1990 |
| 4864064 | Process for the preparation of tert. alkyl-tert. aralkyl peroxides Disclosed is a process for the preparation of tert. alkyl-tert. aralkyl peroxides with the general formula ##STR1## where R represents an alkyl radical with 1 to 4 C-atoms, R', R" and R'" represent the same or different alkyl radicals with 1 to 5 C-a... | 09/05/1989 |
| 4834852 | Process for the activation of hydrogen peroxide Disclosed is a process for the conversion of difficultly degradable or toxic substances into degraded or degradable substances. The substances are treated by passing direct current of 0.5 to 50 mA/cm2 through an aqueous medium containing 0.5 to... | 05/30/1989 |
| 4830801 | Degassing process for a worm extruder Process for a worm extruder or continuous kneader to produce either a degasses paste or plastic composition is disclosed. A mixture of either solid or liquid organic peroxides in the paste or plastic composition having evaporable constituents are introduc... | 05/16/1989 |
| 4783284 | Process for the preparation of alkyl-5,6,7,8-tetrahydroanthrahydroquinones The present invention provides a process for the preparation of alkyl-5,6,7,8-tetrahydroanthrahydroquinones, wherein an alkylanthraquinone is hydrogenated with a catalyst which consists of an organic polymer to which a metal of the noble metal or platinum... | 11/08/1988 |
| 4782189 | Process for the continuous preparation of lauroyl peroxide The invention provides an improvement for the continuous preparation of lauroyl peroxide in the absence of organic solvents from crude lauroyl chloride, aqueous sodium hydroxide solution and hydrogen peroxide by continuously adding the reaction components... | 11/01/1988 |
| 4743671 | Process and agent for cross-linking organopolysiloxanes The present invention provides a process for cross-linking organopolysiloxanes by means of a bis-benzoyl peroxide derivative with heating, wherein, as bis-benzoyl peroxide derivative, there is used at least one compound of the general formula: ##STR1... | 05/10/1988 |
| 4722680 | Degassing device on a worm extruder A degassing device on a worm extruder having a worm housing accomodating the worm or worms and provided with at least one degassing passage opening into the worm chamber of the housing is provided with a return delivery device for material which has penet... | 02/02/1988 |
| 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 |
| 4610865 | Process for the production of potassium peroxymonosulphate triple salt The present invention provides a process for the production of the triple salt 2KHSO5.KHSO.sub.4.K.sub.2 SO4 from sulphuric acid, hydrogen peroxide and potassium hydroxide, wherein, for continuous production, an aqueous working solut... | 09/09/1986 |
| 4596702 | Potassium perborate-hydrate and process for its preparation Disclosed is potassium perborate-hydrate of the formula KBO3.nH.sub.2 O where n is 0 to 1 and a process for its preparation by the reaction of H2 O2 with potassium metaborate in the presence of an excess of potassium ions.... | 06/24/1986 |
| 4572825 | Process for bleaching natural chalk For bleaching natural chalk, an aqueous suspension consisting of 50 to 80% by weight fine-grained natural chalk and 50 to 20% by weight water and containing 0.1 to 1.5% by weight, based on the dry weight of the chalk, of a dispersant and optionally contai... | 02/25/1986 |
| 4549668 | Lid with vent valve Lid with vent valve for packings of gas-evolving products, especially organic peroxides or hydrogen peroxide, characterized by a bush surrounded flush by an edge of a hole in the lid, especially by an annular collar on the inner side of the lid, having an... | 10/29/1985 |
| 4548708 | Process for removing hydrogen sulfide from natural gas, oil and mixtures thereof A process is provided for substantially complete elimination of hydrogen sulphide from the organic phase of natural gas, crude oil or mixtures thereof, by reaction with aqueous hydrogen peroxide in the absence of any catalyst or organic compounds or of co... | 10/22/1985 |
| 4419197 | Process for cross-linking of non-polar polymers in high frequency electric alternating fields The present invention provides a process for cross-linking non-polar polymers in a high-frequency electric alternating field with the use of a peroxide as cross-linking agent, wherein the cross-linking agent used is a peroxide of the general formula: ... | 12/06/1983 |
| 4400367 | Hydrogen peroxide adduct and process for preparation and use thereof Disclosed is an adduct of the formula 4Na2 SO4.2H.sub.2 O2.KCl and a process for the preparation of this adduct by crystallizing the adduct out of a suspension containing from about 100 to 900 g of hydrogen peroxide per li... | 08/23/1983 |
| 4397833 | Process for the continuous production of alkali metal superoxides The process of continuously producing an alkali metal superoxide comprises the reaction of an aerosol of hydrogen peroxide and an alkali metal hydroxide in an inert gas. The reacting aerosol is of the solid/gaseous type or of the liquid/gaseous type. The ... | 08/09/1983 |
| 4381222 | Process for the distillative separation of tertiary alkyl hydroperoxides and ditertiary alkyl peroxides A process for the distillative separation of tertiary alkyl hydroperoxides of the formula wherein R is a tertiary alkyl group with 4 to 6 carbon atoms from the corresponding di-tertiary alkyl peroxides resulting during their preparation, which process com... | 04/26/1983 |
| 4368311 | Accelerator for hardening unsaturated resins The present invention provides an accelerator for hardening unsaturated resins, comprising a mixture of at least one ketimine and at least one inorganic or organic cupric or ferric compound. The present invention also provides a process for hardening unsaturat... | 01/11/1983 |
| 4179394 | Process for improving the storage stability of alkali persalts A process for improving the storage behavior of alkali persalts in particularly alkali percarbonates, by preparing a granulate composition therefore is disclosed. The process comprises the steps of: (a) granulating an alkali persalt, wherein the alkali cation ... | 12/18/1979 |
| 3966840 | Free radical polymerization of olefinically unsaturated monomers, using pinanyl-peroxyesters The esters of pinane hydroperoxide with carboxylic acids are effective free radical initiators for the polymerizaton of olefinically unsaturated monomers, and are superior to the corresponding esters of tert-butyl peroxide by their shorter half-life at eq... | 06/29/1976 |
