| Patent Number |
Title Of Patent |
Date Issued |
| 4740626 |
Process for the preparation of aldehydes |
April 26, 1988 |
| The present invention relates to a process for the preparation of aldehydes by the reaction of olefinic compounds with hydrogen and carbon monoxide in the presence of a catalyst system containing rhodium and aromatic phosphines. The aromatic phosphines are soluble in organic media and |
| 4623490 |
Process for the purification of sulfonated aryl phosphines |
November 18, 1986 |
| A process for the purification of salts of at least one member of the group consisting of diphenylphosphine-phenyl-m-sulfonic acid, phenylphosphine-di-(m-phenylsulfonic acid) and triphenylphosphine-tri-(m-sulfonic acid) from aqueous solutions thereof comprising adding at least a mola |
| 4590247 |
Process for the homo- and copolymerization of ethylene |
May 20, 1986 |
| The homo- or copolymerization of ethylene at temperatures of 150.degree. C. to 350.degree. C. and pressures of 300 to 3500 bar is carried out in the presence of catalysts having an organometallic compound of a metal of Group III of the Periodic Table of the Elements and a titanium compou |
| 4578523 |
Process for the preparation of aldehydes |
March 25, 1986 |
| A novel process for the preparation of aldehydes by reacting olefins with carbon monoxide and hydrogen in the presence of a catalyst system comprised of rhodium in metallic form or as a compound and a water-soluble quaternary ammonium salt of a mono, di or trisulfonated arylphosphine. |
| 4547142 |
Process and apparatus for producing plastic pipe |
October 15, 1985 |
| An improved ram extruder for the production of plastic pipe, especially plastic pipe of high molecular weight low pressure polyethylene, which comprises an extrusion die, heating means for heating polymer to be extruded, a ram which is reciprocated in the extrusion die, means for rec |
| 4541840 |
Process and device for the discharge of ash-containing fuel residues |
September 17, 1985 |
| The invention relates to a process and a device for the discharge of residues of ash-containing fuels occurring during gasification of coal. The hot mixture of residues and water is separated in a separating chamber, whereby the residues enter a lock vessel situated under the separat |
| 4533755 |
Process for the hydroformylation of olefins |
August 6, 1985 |
| A process for the hydroformylation of olefins having 2 to 5 carbon atoms using rhodium catalysts in a low pressure process, wherein the waste gas from the low pressure plant containing the olefin is compressed and used in a high pressure plant. |
| 4529132 |
Process for preparing free-flowing ethylene homopolymers or copolymer waxes |
July 16, 1985 |
| The invention relates to the preparation of free-flowing homopolymer and copolymer waxes by heating the solid or molten waxes in aqueous ammonia solution. |
| 4526588 |
Process for the production of a coal-water suspension which is suitable for use in coal gasifica |
July 2, 1985 |
| A coal-water suspension containing 50 to 75 percent by weight coal, based on the weight of the suspension, the bulk of the coal having a particle size of 50 to 500 .mu.m, the proportion of the particles having a diameter greater than 0.5 mm in the coal being less than 15 percent by weigh |
| 4515986 |
Process for preparing 3-dimethylamino-2,2-dimethylpropanal |
May 7, 1985 |
| An improved process for preparing 3-dimethylamino-2,2-dimethylpropanal from isobutyraldehyde, dimethylamine and a source of formaldehyde is disclosed wherein the process is carried out at a pH value of 9 to 11. |
| 4511439 |
Solar-selective layers and method for producing same |
April 16, 1985 |
| An improved solar-selective layer and method for producing the same on suitable substrates is discussed. In accordance with this invention, a metal layer is first of all deposited on a suitable substrate of a collector and is then oxidized at elevated temperature and pressure. |
| 4510182 |
Method for the production of homogeneous coatings of two or more metals and/or metal compounds |
April 9, 1985 |
| A method for the production of homogeneous coatings of a substance comprising at least two metals and/or metal compounds on a substrate, which method comprises depositing the substance from a gas or liquid phase from dinuclear or polynuclear mixed metal compounds via a four step proc |
| 4502230 |
Apparatus for heating or cooling and in particular for drying finely particulate solids |
March 5, 1985 |
| The invention relates to an apparatus for drying finely particulate solids in a carrier gas stream conducted along a helical path. The apparatus consists of an externally heated and cooled flow tube centrically surrounding a similarly heated and cooled inner body. Guide means helical |
| 4481015 |
Coal-water suspensions, a method for their production, and their use |
November 6, 1984 |
| The present invention relates to a method for producing pumpable coal-water suspensions by grinding pre-comminuted coal with water in a packed column in a ratio corresponding to the composition of the suspension ready for use. The addition of water or coal is controlled by measuring the |
| 4474579 |
Process for improving the combustion of diesel engine fuels |
October 2, 1984 |
| In order to improve the combustion of diesel engine fuels, mixtures of neutral salts of carboxylic acids and metals of Atomic Nos. 57 to 71 and free carboxylic acids are added thereto. |
| 4472526 |
Process for producing ethanol and n-propanol from methanol and synthesis gas |
September 18, 1984 |
| The present invention relates to a process for producing ethanol and n-propanol by reacting methanol with carbon monoxide and hydrogen at elevated pressure and temperature. A system consisting of a cobalt compound, a ruthenium compound, an iodide, and an organic phosphine serves as t |
| 4453410 |
Method and apparatus for locating material defects in hollow bodies |
June 12, 1984 |
| An ultrasonic probe is positioned within a hollow body such as a pipe for detecting possible flaws in the body wall. The probe is designed for rotational and longitudinal movement in said pipe and includes an ultrasonic transmitter/receiver mounted eccentrically within a liquid fille |
| 4446311 |
Process for preparing pulverulent ethylene polymers |
May 1, 1984 |
| A process for preparing pulverulent ethylene homopolymers or copolymers with a grain size of less than 200 .mu.m which comprises contacting coarse-particled ethylene homopolymers or copolymers in the form of a suspension with an aliphatic ketone containing 3 to 10 carbon atoms, heati |
| 4435603 |
Method for preventing caking of polyols |
March 6, 1984 |
| A polyol composition comprising a solid polyol which is crystalline under normal conditions and, as an anti-caking agent therefor, a tertiary amine containing at least two identical organic substituents, each having two to twenty carbon atoms. A method of preventing caking of polyols is |
| 4430096 |
Process for the production of gas mixtures containing hydrogen and carbon monoxide via the endot |
February 7, 1984 |
| An improved process for the production of a gas mixture containing hydrogen and carbon monoxide by endothermal partial oxidization of an organic compound with steam and/or carbon dioxide is disclosed wherein at least a portion of the heat required for the partial oxidation is obtained by |
| 4426315 |
Process for the preparation of supported catalysts for the polymerization of olefins |
January 17, 1984 |
| In a process for the preparation of a supported catalyst for the preparation of polyolefins which have a component A and a component B, wherein component A consists essentially of a reaction product ofa compound of a first metal of sub groups IV to VI of the Periodic Table of the Element |
| 4425139 |
Apparatus for sluicing residues from the pressure system of a pressure gasification tank |
January 10, 1984 |
| An improvement in a process for periodically sluicing residues which are produced when gasifying ash-containing fuels with oxygen or an oxygen-containing composition under a pressure of 10 to 200 bars wherein ash is granulated in a water bath connected to a gasification chamber, susp |
| 4423156 |
Process for preparing unsaturated hydrocarbons |
December 27, 1983 |
| The conventional process for the preparation of unsaturated hydrocarbons comprises catalytic hydrogenation of carbon oxides at 220.degree. to 500.degree. C. and pressures of up to 30 bars. It has been found that, by carrying out the foregoing reaction in the presence of at least one low |
| 4404410 |
Process for preparing 2,3-dimethyl-2,3-butanediol |
September 13, 1983 |
| An improved process for the preparation of 2,3-dimethyl-2,3-butanediol is disclosed wherein hydrogen peroxide and 2,3-dimethylbutene are reacted with formic acid at 50.degree. to 70.degree. C. while stirring, the 2,3-dimethylbutene and hydrogen peroxide being introduced into the formic |
| 4402860 |
Process for demetallizing primary products of the oxo synthesis |
September 6, 1983 |
| An improved process for de-cobaltizing the primary product of an oxo synthesis is disclosed wherein the primary product is contacted with steam introduced into a vessel to which the primary oxo product is introduced but initially maintained in out of contact relationship to such product |
| 4400097 |
System for measuring temperatures in pressurized reactors |
August 23, 1983 |
| A system for the measurement of temperatures in a reactor such as those operated under high pressure and/or temperature is disclosed. The temperature is measured by the use of a pyrometer which is in optical communication with a measuring duct which can be disposed in the wall of the |
| 4387202 |
Polymerization using mixed aluminum compounds |
June 7, 1983 |
| A process is described for the polymerization of ethylene or copolymerization of ethylene with a C.sub.3 to C.sub.15 alpha olefin in solution, suspension or in the gas phase at 20.degree. to 250.degree. C. and 1 to 100 bars in the presence of a mixed catalyst comprising a separately |
| 4387201 |
Process for the homo- and copolymerization of .alpha.-olefins |
June 7, 1983 |
| A new catalyst for the homo- and copolymerization of .alpha.-olefins by a Ziegler type catalysis is described, the catalyst being prepared by reaction of a titanium (IV) compound with a carrier substance in the presence of a solution of at least about 0.1 weight percent of an atactic |
| 4381924 |
Process for sluicing residues from the pressure system of a pressure gasification tank |
May 3, 1983 |
| An improvement in a process for periodically sluicing residues which are produced when gasifying ash-containing fuels with oxygen or an oxygen-containing composition under a pressure of 10 to 200 bars wherein ash is granulated in a water bath connected to a gasification chamber, susp |
| 4372253 |
Radiation boiler |
February 8, 1983 |
| An improvement in a radiation boiler for cooling a gas stream containing solid and molten particles wherein gas is introduced vertically via a gas feed at the top of a radiation boiler having a cooled gas outlet and a water bath disposed at the bottom thereof for removing the particles a |
| 4368142 |
Methanation catalyst |
January 11, 1983 |
| A methanation catalyst comprising cobalt, nickel and magnesium, disposed on a carrier; a process for its preparation and use of the catalyst for methanation. |
| 4337363 |
Process for the preparation of 3-(4-methyl-3-cyclohexen-1-yl) butyraldehyde |
June 29, 1982 |
| In a process for the preparation of 3-(4-methyl-3-cyclohexen-1-yl) butyraldehyde by hydroformylation of limonene in the presence of a catalyst containing a metal of Group VIII of the Periodic Table, the improvement wherein a rhodium carbonyl complex containing additionally a tripheny |
| 4324918 |
N,N-Dimethyl-N'-isobutyl-N'-.beta.-hydroxyethyl-propylenediamine and a process for its preparati |
April 13, 1982 |
| There are disclosed the chemical compound N,N-dimethyl-N'-isobutyl-N'-.beta.-hydroxyethyl-propylenediamine, a process for the preparation thereof and its use. |
| 4317945 |
Process for preparing 2-methyl-2-sec.butyl-1,3-propanediol |
March 2, 1982 |
| A process for the preparation of 2-methyl-2-sec.butyl-1,3-propanediol comprising hydroformylating 2-methyl-1-butene with carbon monoxide and hydrogen in the presence of a first catalyst to form the substance 3-methyl-pentanal, condensing said substance with formaldehyde, or a compoun |
| 4317925 |
Process for the production of di-n-propylacetic acid |
March 2, 1982 |
| A process for the preparation of di-n-propylacetic acid which comprises the steps ofA. converting n-valeraldehyde-diallyl acetal into allyl-1-pentenyl ether by cleaving one mol of allyl alcohol per one mol of n-valeraldehye-diallyl acetal;B. rearranging the allyl-1-pentenyl ether thermal |
| 4314035 |
Method for the preparation of polymer foams |
February 2, 1982 |
| Foamable copolymers and copolymer mixtures comprising 35% to 98% by weight ethylene, 1% to 30% by weight vinyl alcohol, 1% to 30% by weight acrylic acid esters of secondary or tertiary alcohols, and 0 to 5% by weight vinyl ester are disclosed. All percentages are based upon the total wei |
| 4311854 |
Process for the production of di-n-propyl-acetic acid |
January 19, 1982 |
| A process for the preparation of di-n-propyl-acetic acid, comprising the steps of:A. catalytically reacting n-butyric acid with cleavage of carbon dioxide and water to form heptanone-4;B. hydrogenating heptanone-4 in teh presence of a catalyst to form heptanol-4;C. dehydrating heptanol-4 |
| 4310333 |
Process and plant for the gasification of solid fuels via partial oxidation |
January 12, 1982 |
| An improvement in the process for the gasification of a solid fuel wherein the solid fuel is at least partially oxidized at a temperature above the melting point of ash of the solid fuel and at a pressure of 10-200 bar where the resultant synthesis gas is thereafter cooled in the presenc |
| 4307252 |
2-Propyl-pent-4-en-1-al |
December 22, 1981 |
| 2-Propyl-pent-4-en-1-al of the formula ##STR1## and a process for its preparation. |
| 4305286 |
Method and apparatus for measuring the temperature in reactors |
December 15, 1981 |
| A method and apparatus for directly measuring the interior temperature of a pressurized reactor includes a temperature sensor movable along a measurement channel between a measurement position within the reactor and a retracted position outside the reactor, a drive system for selectively |
| 4302567 |
Process for the homo- and co-polymerization of .alpha.-olefins |
November 24, 1981 |
| A catalyst for the polymerization of olefins is described wherein a titanium(IV) compound is reduced with an organoaluminum compound in the presence of atactic poly-.alpha.-olefin. Polymerization with the catalyst is also disclosed. |
| 4288643 |
Process for preparing 2,3-dimethyl-butene-2 |
September 8, 1981 |
| A process for the preparation of 2,3-dimethylbutene-2 is disclosed, which comprises the steps of converting isovaleraldehyde to isopropylacrolein, hydrogenating .alpha.-isopropylacrolein to form 2,3-dimethylbutanol, dehydrating 2,3-dimethylbutanol to form an olefin mixture comprising |
| 4288266 |
Method for heated tool butt welding of tube and pipe of thermoplastic materials |
September 8, 1981 |
| In a method for heated tool butt welding of pipe consisting of a thermoplastic material by placing or pressing the surfaces to be joined of the pipes to be welded into contact with a heated tool to form an inner weld bead at each end to be joined, subsequently heating the surfaces at a |
| 4285875 |
Process for preparing carboxylic acids by catalytic oxidation of aldehydes |
August 25, 1981 |
| A process for preparing carboxylic acids by the oxidative conversion of the corresponding aldehydes comprises oxidizing the aldehydes in the presence of a catalyst comprising the anion [Fe(CN).sub.5 H.sub.2 O].sup.-3. The catalyst may be selected from [Fe(CN).sub.5 H.sub.2 O].sup.-3, com |
| 4275242 |
Process for preparing 2-methylenealdehydes |
June 23, 1981 |
| A process for preparing 2-methylenealdehydes by reacting aldehydes with formaldehyde in the presence of enamines is disclosed. |
| 4270008 |
2-Propyl-pent-4-en-1-al |
May 26, 1981 |
| 2-Propyl-pent-4-en-1-al of the formula ##STR1## and a process for its preparation. |
| 4263460 |
Process for preparing methyl-nonyl-acetaldehyde |
April 21, 1981 |
| In a process for preparing methyl-nonyl-acetaldehyde from undecanal and formaldehyde or a source of formaldehyde, e.g., a substance which forms formaldehyde, in the presence of catalytic amounts of a secondary amine, the improvement whereinA. the undecanal is used in the form of the reac |
| 4258214 |
Process for the production of aldehydes |
March 24, 1981 |
| A process for the preparation of an aldehyde of the formula R--CH(CH.sub.3)--CHO where R is a straight-chain alkyl group having 7 to 12 carbon atoms by reaction of an olefin of the formula R--CH.dbd.CH.sub.2 where the carbon monoxide and hydrogen is described, the process being carri |
| 4246357 |
Copolymers of ethylene and their use in the preparation of foamable plastics |
January 20, 1981 |
| A foamable copolymer comprising 40 to 98 percent by weight units of ethylene, 1 to 30 weight percent units of vinyl alcohol, 1 to 30 weight percent units of acrylic acid ester of a secondary or tertiary alcohol, and up to 2 percent by weight of vinyl acetate units is described together |
| 4242283 |
Process for continuously producing oxygen-containing compounds |
December 30, 1980 |
| An improved process for continuously producing oxygen-containing compounds by the oxo process from olefins, carbon monoxide and hydrogen at a pressure of 5 to 1000 bar and at a temperature of 50.degree. to 200.degree. C. in the presence of a metal of Group VIII and/or a compound ther |
