| Patent Number |
Title Of Patent |
Date Issued |
| RE31071 |
6-Aza-3H-1,4-benzodiazepines |
November 2, 1982 |
| There are produced 6-aza-3H-1,4-benzodiazepines and 6-aza-1,2-dihydro-3H-1,4-benzodiazepines of the formula ##STR1## where R.sub.1 is a halogen, R.sub.2 and R.sub.3 are hydrogen, halogen, trifluoromethyl, nitro, nitrile, hydroxy, lower alkyl, lower alkoxy, R.sub.4 is hydrogen, hy |
| 4408064 |
Bis-(silylethyl)-oligosulphides and process for their production |
October 4, 1983 |
| Novel bis-(silylethyl)-oligosulphides are obtained by reacting a vinyl silane of the formula (CH.sub.2 .dbd.CH).sub.m -SiR.sub.n.sup.1 R.sub.4-(m+n) in which R represents chlorine, bromine, iodine, C.sub.1 -C.sub.3 -alkoxy, 2-methoxyethoxy, 2-ethoxyethoxy or hydroxy, R.sup.1 represen |
| 4402733 |
Herbicidally active 1,2,4-triazin-5-one derivatives |
September 6, 1983 |
| Herbicidally active derivatives of the formula ##STR1## in which R represents methyl, ethyl or n-propyl. |
| 4379871 |
Process for the production of carbon black containing pigment-synthetic resin concentrates |
April 12, 1983 |
| There is disclosed a process for the production of a pigment-synthetic resin concentrate containing an organic solvent soluble polymer and carbon black having quicker distributability in organic media such as lacquer binding media, printing inks, etc., such concentrates being especially |
| 4369096 |
Process for the purification of epoxides |
January 18, 1983 |
| A process has been developed for the purification of expoxides containing carbonyl compounds as impurities wherein the carbonyl compound content is up to 2% by weight of epoxide. Purification is effected by treatment with compounds containing at least one NH.sub.2 group. |
| 4360682 |
Stabilizing caprolactones with dihydroxybenzenes |
November 23, 1982 |
| Caprolactones such as .epsilon.-caprolactone are stabilized against discoloration with dihydroxybenzenes such as hydroquinone or compounds of the formula ##STR1## in which R.sub.1 is alkyl of 1 to 8 carbon atoms, andR.sub.2 is hydrogen or alkyl of 1 to 8 carbon atoms.Even the presenc |
| 4353208 |
Exhaust gas purification apparatus for an internal combustion engine of motor vehicles |
October 12, 1982 |
| An exhaust gas purification apparatus for an internal combustion engine including a catalyst chamber containing a catalyst composition for the catalytic conversion of harmful substances contained in the exhaust gases wherein the interior wall of the exhaust pipe connecting the engine wit |
| 4340490 |
Process for the detoxification of waste water containing phenol, phenol derivative or phenol and |
July 20, 1982 |
| Waste water containing phenol, phenol derivatives or phenol plus formaldehyde is purified by treating the waste water with hydrogen peroxide and either iron, copper or the complex salt sodium iron (III) ethylenediamine tetraacetate. |
| 4339616 |
Process for the manufacture of 1,2-diols having at least 4 carbon atoms |
July 13, 1982 |
| A process for the preparation of 1,2-diols having at least 4 carbon atoms by hydrolysis of the corresponding 1,2-epoxide compound with water in the presence of catalysts at elevated temperatures characterized in that salts of primary, secondary and/or tertiary amines with organic and/or |
| 4332940 |
Process for the production of 2,3-cycloalkenopyridines |
June 1, 1982 |
| 2,3-Cycloalkenopyridines of the formula ##STR1## are prepared by reacting a cycloalkanone or cycloalkenone of the formula ##STR2## with an oxo compound of the formula ##STR3## where Z is an aliphatic carbon chain which is unsubstituted or has hydrocarbon substituents and |
| 4322250 |
Mastic asphalt mixture |
March 30, 1982 |
| Mastic asphalt mixture for road, building and industrial construction, which contains 0.1 to 2% by weight of silica. For example, a precipitated silica, a precipitated and spray dried, or a pyrogenously produced silica may be used as a synthetic silicic acid. The content of synthetic sil |
| 4318894 |
Apparatus for the catalytic purification of exhaust gases |
March 9, 1982 |
| Baffle means coated with effective catalyts are positioned inside exhaust pipes to convert the harmful substances in said exhaust gases into harmless components. The baffle means impart a disturbed flow and/or change of the direction of flow of the exhaust gases in the exhaust pipe. |
| 4308673 |
Stiffening and likewise non-slip material for the heel region of shoes containing this material |
January 5, 1982 |
| There are provided thermoplastic or through the action of solvent shapable, shoe stiffening and likewise non-slip inner material for the heel region in the form of continuous sheets or blanks consisting of an embedded fiber structure which is loaded or filled with at least one synthetic |
| 4308074 |
Precipitated silicic acid, method and compositions containing same |
December 29, 1981 |
| Finely divided precipitated silicic acid is obtained by the method of the invention.Compositions containing the finely divided precipitated silicic acid as a filler distributed in an elastomer such as an organopolysiloxane are disclosed. |
| 4303621 |
Process for the recovery of methionine and potassium bicarbonate |
December 1, 1981 |
| Methionine and potassium are recovered from the recycling solution of the potassium carbonate-methionine process by concentrating the mother liquor after the methionine precipitation and with cooling carbonating the mother liquor. |
| 4300391 |
Hot wire anemometer for measuring the flow velocity of gases and liquids (II) |
November 17, 1981 |
| There is provided a hot wire anemometer for measuring the flow velocity of gases and liquids, especially for the intake air of internal combustion engines, with one or more temperature dependent resistances of which one or more are heated wherein there is applied to the side of the heate |
| 4299725 |
Aqueous media of decreased corrosiveness for iron-containing metals |
November 10, 1981 |
| Aqueous media having a dissolved content of a small amount, (less than 100 p.p.m.) of a mixture of aminoalkanols of the formula: ##STR1## wherein R.sub.1 and R.sub.2 each represent H and C.sub.1-18 unbranched alkyl substituents (the sum of the carbon atoms in R.sub.1 and R.sub.2 |
| 4294726 |
Catalyst for the purification of exhaust gases of internal combustion engines |
October 13, 1981 |
| A three-way catalyst is described for the purification of automobile exhaust gases formed of an active substance of platinum and rhodium and possibly base metal(s) at a certain weight ratio between the two noble metals and at a certain atomic ratio between the noble and the base metal, |
| 4292291 |
Process for the production of furnace black |
September 29, 1981 |
| There is set forth a process for the production of furnace black comprising spraying an oily carbon black forming material into a stream of hot combustion gases produced by reaction of fuel with reaction air, chilling and recovery of the carbon black by separation from the waste gases du |
| 4287094 |
Monomeric, polymeric and carrier-fixed rhodium complex compounds, process for their production a |
September 1, 1981 |
| The invention relates to coordination compounds of rhodium with silicon-substitued dialkyl or diaryl sulfide groups as ligands in monomeric, polymeric or carrier-fixed forms. The substance can be used as catalysts. |
| 4283337 |
Process for the purification of tryptophane and derivatives of tryptophane |
August 11, 1981 |
| Tryptophane and tryptophane derivatives are purified by treating them in an inert solvent at a temperature between about 20.degree. C. and the boiling point of the mixture with a salt of dithionous acid. Preferably there is used as solvent a mixture of water and a lower aliphatic carboxy |
| 4282198 |
Process for the production of high quality carbon black |
August 4, 1981 |
| High quality carbon black forming material convertible with high yield into furnace black having a high abrasion resistance in rubber is prepared by dissolving pitch with conventional thinly liquid carbon black feed stock and mechanically separating suspended matter from the mixture obta |
| 4281123 |
Process for introducing three substituents in cyanuric chloride |
July 28, 1981 |
| Three substituents are introduced into cyanuric acid in the presence of an acid binding agent by working in a manner permitting high mixing and therefore high reaction velocities and permitting high throughputs in small tubular containers by introducing liquid cyanuric chloride through a |
| 4281010 |
Dithienylalkylamines and process for their production |
July 28, 1981 |
| There are prepared compounds of the formula ##STR1## where >A--B-- has either the structure >C(OH)--CH.sub.2 -- or the structure >C.dbd.CH, Alk is a straight or branched chain C.sub.1 --C.sub.5 --alkylene group and Y is ##STR2## where R is hydrogen or a C.sub.1 --C.s |
| 4280914 |
Process for automatically controlling the detoxification of waste waters containing nitrite ions |
July 28, 1981 |
| In the detoxification of waste waters containing nitrite ions by means of hydrogen peroxide the addition of hydrogen peroxide is automatically controllable by adding the hydrogen peroxide continuously or in portions with continuous measurement of the pH and stopping the addition when no |
| 4276143 |
Apparatus for continuously measuring ion concentrations |
June 30, 1981 |
| There is provided an apparatus for continuous measurement of ion concentration in solutions by means of ion sensitive electrodes, which apparatus consists of an electrode containing measuring cell and a dosaging device. This apparatus is particularly suited for measuring cyanide ion |
| 4275203 |
Process for the production of chloro-amino-s-triazines |
June 23, 1981 |
| Chloro-amino-s-triazines are produced by the known reaction of cyanuric chloride with an amine or .alpha.-aminonitrile in the presence of an acid binding agent in an improved manner by working at high mixing velocities and thus at high reaction speed and thereby obtaining high throughput |
| 4275048 |
Process for the preparation of fine droplet-reacted aluminosilicates of the smallest particle si |
June 23, 1981 |
| A process for the preparation of fine droplet-reacted sodium aluminosilicates with the smallest particle sizes, containing less than 0.1% by weight of granules exceeding 25 .mu.m in size, said aluminosilicates being insoluble in water and containing some bound water, of the general f |
| 4274883 |
Aqueous dispersion of a hydrophobic silica |
June 23, 1981 |
| An aqueous dispersion of a hydrophobic silica consisting of 0.1 to 50 parts of hydrophobic silica, in a given case up to 3 parts of wetting agent and 99.9 to 50 parts of water. It is produced by intensive mixing of hydrophobic silica with water with the known "dry-water-phase" as an |
| 4273589 |
Precipitated silicic acid, method and compositions containing same |
June 16, 1981 |
| Finely divided precipitated silicic acid is obtained by the method of the invention.Compositions containing the finely divided precipitated silicic acid as a filler distributed in an elastomer such as an organopolysiloxane are disclosed. |
| 4271299 |
Process for the production of 2-alkoxy-4,6-dichloro-s-triazines |
June 2, 1981 |
| 2-Alkoxy-4,6-dichloro-s-triazines are produced by the known reaction of cyanuric chloride with an alcohol in the presence of an acid binding agent in an improved manner by working at high mixing velocities and thus at high reaction speed and thereby obtaining high throughputs in small |
| 4271298 |
Process for the production of suspensions or solutions of cyanuric chloride in water |
June 2, 1981 |
| Suspension or solutions of cyanuric chloride in water are prepared at high mixing velocities and low temperatures with resulting low degree of hydrolysis by introducing liquid cyanuric chloride through a nozzle in the upper portion of the mixing apparatus in countercurrent flow to upward |
| 4271297 |
Process for the production of suspension or solutions of cyanuric chloride in organic solvents ( |
June 2, 1981 |
| Suspension or solutions of cyanuric chloride in water containing organic solvents are prepared at high mixing velocities and low temperatures with resulting low degree of hydrolysis by introducing liquid cyanuric chloride through a nozzle in the upper portion of the mixing apparatus in |
| 4271135 |
Preparation of finely-divided, water-insoluble silicate cation-exchangers with a narrow particle |
June 2, 1981 |
| A method for the preparation of finely-divided, water-insoluble, aluminosilicate cation-exchangers with a narrow particle size spectra suitable for detergent formulations comprising:(1) agitating a water-dissolved alkali metal silicate at a temperature of from 55.degree. C. to 95.degree. |
| 4271044 |
Carrier matrix for catalysts and process for its production |
June 2, 1981 |
| Monolithic carrier matrixes are formed from high grade steel, consisting of alternating smooth and corrugated layers of sheet metal and/or screen cloth, which may be combined with layers of smooth screen cloth or of smooth or corrugated sheet metal, wherein the layers may be coated on |
| 4269979 |
Process for the production of suspension or solution of cyanuric chloride in organic solvents (I |
May 26, 1981 |
| Finely divided suspensions of cyanuric chloride in organic solvents which are practically water free are prepared at high mixing velocities and low temperatures by introducing liquid cyanuric chloride through a nozzle in the upper portion of the mixing apparatus in countercurrent flow to |
| 4267158 |
Continuous process for the production of amorphouse sodium aluminosilicate |
May 12, 1981 |
| A process for the continuous production of an aqueous, alkaline suspension of x-ray amorphous sodium aluminosilicate having a small particle size of at least 99% by volume of a particle size of less than 50.mu., suitable for conversion into zeolite sodium aluminosilicate of the smallest |
| 4259487 |
Process for the production of optionally substituted 2-mercapto-4,6-di-chloro-s-triazines |
March 31, 1981 |
| 2-mercapto-4,6-dichloro-s-triazines or substituted 2-mercapto-4,6-dichloro-s-triazines are produced by the known reaction of cyanuric chloride with a mercaptan or mercaptide in the presence of an acid binding agent in an improved manner by working at high mixing velocities and thus a |
| 4258023 |
Process for the pyrogenous production of very finely divided oxides of a metal and/or of a metal |
March 24, 1981 |
| In case of the pyrogenous production of metal oxides or metalloid oxides, whenever a halogen compound is used as a starting material, an elementary halogen is formed as a byproduct. This may be converted in the cooling section of the reaction apparatus with hydrogen into hydrogen halide. |
| 4256752 |
Treatment of ulcers with acylated aminoalkyl cyanoguanidines containing a heterocyclic residue |
March 17, 1981 |
| There are prepared compounds corresponding to the formula ##STR1## in which X is a 5-membered or 6-membered aromatic heterocyclic radical which is attached through a carbon atom to the adjacent CH.sub.2 -group and which contains from 1 to 3 nitrogen atoms or one nitrogen atom and one |
| 4255252 |
Procedure for the reprocessing of used lubricating oils |
March 10, 1981 |
| A method for reprocessing used lubricating oils is disclosed wherein the oil is dried, treated with finely dispersed sodium metal at elevated temperature, the remaining free or organically bound metal is decomposed by means of an active hydrogen containing compounds, followed by dist |
| 4254269 |
Dithienyl beta-haloethyl carbinols |
March 3, 1981 |
| There are prepared compounds of the formula ##STR1## where >A--B-- has either the structure >C(OH)--CH.sub.2 -- or the structure >C.dbd.CH, Alk is a straight or branched chain C.sub.1 -C.sub.5 -alkylene group and Y is a C.sub.3 -C.sub.7 -cycloalkyl group, a benzyl group, |
| 4254035 |
Process for the production of 2-acetamidocinnamic acid |
March 3, 1981 |
| 2-acetamidocinnamic acid and substituted 2-acetamidocinnamic acids are prepared by reacting glycine with an aromtic aldehyde in the presence of acetic anhydride and a tertiary amine and subsequently treating with water. |
| 4252637 |
Process for the reprocessing of used lubricating oils (II) |
February 24, 1981 |
| A process for the reprocessing of used lubricating oil wherein said oils are treated with a mixture of potassium hydroxide and sodium hydroxide. |
| 4250308 |
Process for the recovery of solid cyanuric chloride (A) |
February 10, 1981 |
| Solid cyanuric chloride is recovered by a process of spraying liquid cyanuric chloride which preferably is freed from chlorine and cyanogen chloride to the maximum extent possible, the cyanuric chloride is sprayed with the aid of known spraying apparatus into a separation container and |
| 4250081 |
Thermoplastic mixtures for the production of synthetic resin films with antiblocking properties |
February 10, 1981 |
| There are provided thermoplastic polymer containing mixtures suitable for making synthetic resin films with antiblocking properties containing 0.05 to 70 weight % of a pulverulent zeolite. |
| 4247556 |
7-Azabenzimidazoles with basic side chains and use thereof |
January 27, 1981 |
| There are prepared 7-azabenzimidazoles of the formula ##STR1## where R.sub.1 and R.sub.2 are the same or different and are hydrogen, C.sub.1 -C.sub.6 -alkyl or C.sub.2 -C.sub.6 -alkanol or --NR.sub.1 R.sub.2 is a 5 to 7 membered saturated heterocyclic ring having either one nitro |
| 4246189 |
Process for the production of hydroxynitriles from epoxides and ketone cyanohydrins |
January 20, 1981 |
| Aliphatic, cycloaliphatic and aromatic epoxides are reacted with ketone cyanohydrins of the formula ##STR1## wherein R.sub.1 and R.sub.2 are aliphatic groups of 1 to 4 carbon atoms at 20.degree. to 150.degree. C. to produce hydroxynitriles. The reaction optionally can be carried |
| 4245502 |
Apparatus for measuring the velocity of gases |
January 20, 1981 |
| There is provided an apparatus for the measurement of the velocity of gases, especially for the intake of internal combustion engines, consisting essentially of an electronic unit and a hot-wire anemometer, with two or more temperature dependent resistance with the highest possible t |
| 4245117 |
Process for the recovery of pure L-cystine |
January 13, 1981 |
| Pure L-cystine is recovered from a mixture with other aminoacids by fractional crystallization in presence of acids and water from an alcoholic medium. |
