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| Patent # | Description |
|---|---|
| US-3,979,475 |
Recovery of HF and ethyl fluoride from alkylation of isoparaffin with
olefins in presence of HF catalyst Lean HF is used to extract ethyl fluoride from depropanizer overhead by steps including contacting liquid propane containing ethyl fluoride with lean HF thus... |
| US-3,979,474 |
Process for separating isobutylene from C.sub.4 hydrocarbon mixtures An improvement in the process for separating isobutylene from a mixture of C.sub.4 hydrocarbon by extracting with sulfuric acid, characterized in that the... |
| US-3,979,473 |
Process for the color stabilization of indene A process for the stabilization of indene against discoloration comprising adding to the indene a minor amount of an insoluble compound selected from the group... |
| US-3,979,472 |
Process for manufacturing hydrocarbons A catalytic process, employing a novel catalyst, for converting lower monohydric alcohols and their ethers, especially methanol and dimethyl ether, to a... |
| US-3,979,471 |
Process for synthesizing ethylenic compounds The invention relates to a process for the preparation of ethylenic compounds and to certain novel ethylenic compounds produced by the process. The process... |
| US-3,979,470 |
Process for the production of primary normal monochloroparaffins Primary normal monochloroparaffins are produced in high yields in a chlorination process of normal paraffins by the recycling technique of the present invention.... |
| US-3,979,469 |
Polyfluoroalkyl iodides, process for their manufacture, and their use New polyfluoroalkyl iodides of the formula ##EQU1## are provided, wherein R.sub.f represents a fluorinated hydrocarbon radical with 3 to 18 carbon atoms,... |
| US-3,979,468 |
4'-Chloro-4-ethynylbiphenyl and method of preparing same Ethynylbiphenyl derivatives of the general formula (I): ##SPC1## in which R represents a chlorine or bromine atom in the 2, 3 or 4 position. These compounds have... |
| US-3,979,467 |
Process for the nitration of haloaromatics A process for the nitration of halogenated aromatic compounds is improved by carrying out the nitration in the presence of a phosphorus compound in an amount... |
| US-3,979,466 |
Process for condensation of alcohols A process for producing higher molecular weight alcohols by forming a reaction mixture of at least one lower molecular weight primary or secondary alkanol having... |
| US-3,979,465 |
Process for the production of lower aliphatic alcohols Process for the production of an aliphatic alcohol comprising reacting an olefin having from 2 to 4 carbon atoms with sulfuric acid to form an ester reaction... |
| US-3,979,464 |
Methylation of 2,6-xylenol to produce 2,3,6-trimethylphenol 2,6-xylenol is methylated to yield 2,3,6-trimethylphenol in high selectivity in a liquid phase reaction controlled in temperature, pressure, and reactor... |
| US-3,979,463 |
Fluoroaliphatic phenols Fluoroaliphatic phenols are prepared by reacting an olefinic phenol with a perfluoroalkyl sulfonyl chloride, bromide, or fluoride in the presence of a free... |
| US-3,979,462 |
Condensation resins of phenols and
.alpha.,.alpha.'-dihydroxy-diisopropyl benzenes A process for the production of light colored condensation resins, wherein phenols are reacted with .alpha.,.alpha.'-dihydroxy-diisopropyl benzenes in the... |
| US-3,979,461 |
Process for the preparation of methyl tert-butyl ether Methyl tert-butyl ether is prepared, and a stream of hydrocarbons containing isobutylene is freed therefrom, by reacting the isobutylene with methanol in a two... |
| US-3,979,460 |
Process for the preparation of an organomercaptophenol from sulfur, a
2,6-disubstituted phenol, and an... A process for the preparation of an organomercaptophenol is described which comprises the reaction of sulfur with a 2,6-disubstituted phenol carried out in the... |
| US-3,979,459 |
Substituted 4-phenyl benzophenones Compounds of the formula ##SPC1## Where X is ##SPC2## Or a group having the formula ##SPC3## In which m takes the value 1, 2 or 3 and where Q is fluorine,... |
| US-3,979,458 |
Production of unsaturated carbocyclic ketones Preparation of .alpha.,.beta.-unsaturated carbocyclic ketones by reacting an enol lactone with a carbanion generated by treatment of a methylphosphonate or a... |
| US-3,979,457 |
Process for production of (+)-2-amino-1-butanol A process for producing (+)-2-amino-1-butanol comprising optically resolving an N-acyl-DL-aminobutyric acid using an acylase to obtain L-2-aminobutyric acid and... |
| US-3,979,456 |
Phenoxyalkylamines, process for their preparation and applications
thereof This invention relates to phenoxyalkylamines having the formula: ##SPC1## In which n is zero or 1, R is hydrogen or a hydroxy group, R.sub.2 is hydrogen, a... |
| US-3,979,455 |
Preparation of dioxyimino-cycloalkanones and related intermediates Dioximinocycloalkanones are prepared by reacting nitrosyl chloride with an enamine with sequential hydrolysis of the reaction product. |
| US-3,979,454 |
Process for the production of alkyl sulphonic acid hydroxy alkyl amides Improved process for the production of alkyl sulphonic acid hydroxy alkyl amides by reacting alkyl sulphonic acid chlorides and hydroxy alkyl amines in the... |
| US-3,979,453 |
3-Cyanamino-2,6-dinitroanilines A new class of 3-cyanamino-2,6-dinitroanilines has been discovered. The novel cyanamino compounds of this invention exhibit fungicidal activity against... |
| US-3,979,452 |
Thioformamide improved process Thioformamide is prepared from hydrogen cyanide and hydrogen sulfide in an improved process employing a tertiary amino ion exchange resin as the catalyst. The... |
| US-3,979,451 |
Process for the production of thiophosgene A process for the production of thiophosgene by the reduction of trichloromethanesulfenyl chloride with hydrogen sulfide at an elevated temperature and in... |
| US-3,979,450 |
Method for preparing dicarboxylic acids A method for preparing dicarboxylic acids by subjecting cycloolefins to ozonolysis in a medium of lower monocarboxylic acids so as to form an ozonalyzate;... |
| US-3,979,449 |
Preparation of an asparagine or a glutamine A process for the preparation of compounds of the general formula ##EQU1## (in which n is an integer equal to 1 or 2 and X and Y which may be the same or... |
| US-3,979,448 |
Processes for the continuous production of aromatic carboxylic acids by
oxidation with nitric acid of aromatic... Processes for the continuous production of aromatic carboxylic acids by reaction of nitric acid with an aromatic compound having an oxidizable alkyl or... |
| US-3,979,447 |
.gamma.-Glutamyl-4-nitroanilide compounds .gamma.-Glutamyl-4-nitroanilide compounds of the formula ##SPC1## Wherein R is a .gamma.-glutamyl radical and X is an acid group, and salts of such compounds,... |
| US-3,979,446 |
Prostaglandin intermediate The topical application of 7-(5.alpha.-hydroxy-2.beta.-[(3RS)-3-hydroxy-3-methyl-trans-1-octenyl]-3.a lpha.-methyl-1.alpha.-cyclopentyl)-cis-5-heptenoic acid, ... |
| US-3,979,445 |
Process for producing amino G acid and amino J acid from tobias acid A novel process for producing 2-amino-6,8-naphthalenedisulfonic acid (Amino G Acid) and 2-amino-5,7-naphthalenedisulfonic acid (Amino J Acid) which comprises... |
| US-3,979,444 |
4-Arylcyclohexylamines The invention relates to novel 4-hydroxymethyl(acyloxymethyl and methyl)-4-arylcyclohexylamines embraced by the formula ##SPC1## Wherein Ar is an aromatic ring... |
| US-3,979,443 |
Process for the preparation of esters of maleic acid with monohydric
alcohols Preparation of esters of maleic acid with monohydric alcohol by forming maleic anhydride by oxidizing a hydrocarbon in a maleic anhydride reaction, scrubbing the... |
| US-3,979,442 |
Diester-amine adducts and process for their manufacture Diester-amine adducts of the formula ##EQU1## are provided, wherein A.sub.1 and A.sub.2 each denote alkyklene with 2 or 3 carbon atoms or... |
| US-3,979,441 |
Oil-soluble polymers of N-3-aminoalkyl acrylamides, and lubricants
containing them Oil-soluble polymers of N-3-aminoalkyl acrylamides, especially N-(1,1-dimethyl-3-dimethylaminopropyl)acrylamide, are obtained by copolymerization with a monomer... |
| US-3,979,440 |
Phenacyl-type esters of phenyl-substituted PGE-type compounds Phenacyl-type esters of PGE.sub.2, PGE.sub.1, and 13,14-dihydro-PGE.sub.1 and their 15-methyl, 16,16-dimethyl, and 17-phenyl analogs, including the respective... |
| US-3,979,439 |
8.beta.,12.alpha.-17-Phenyl-18,19,20 trinor PGF.sub.2.sub..beta.
compounds This invention is a group of 8-beta, 12-alpha-PG.sub.2 (prostaglandin-type) analogs having variable chain length, or methyl or phenyl substitution in the... |
| US-3,979,438 |
8.beta.,12.alpha.-17-Phenyl-18,19,20-trinor-PGE.sub.2 compounds This invention is a group of 8-beta, 12-alpha-PG.sub.2 (prostaglandin-type) analogs having variable chain length, or methyl or phenyl substitution in the... |
| US-3,979,437 |
Substituted phenoxybenzoic acids and derivatives thereof 2-Nitro-5-(substituted-phenoxy)benzoic acids and esters, salts, amides, and acyl halides thereof comprise a class of compounds that are highly effective herbicides. |
| US-3,979,436 |
Oxidation resistant polymeric compositions Antioxidants such as the reaction product of p-aminodiphenylamine and glycidyl methacrylate [3-N-(4'-anilinophenyl)amino-2-hydroxypropyl methacrylate], and the... |
| US-3,979,435 |
8.beta.,12.alpha.-17-Phenyl-18,19,20-trinor-PGF.sub.2.sub..alpha.
compounds This invention is a group of 8-beta, 12-alpha-PG.sub.2 (prostaglandin-type) analogs having variable chain length, or methyl or phenyl substitution in the... |
| US-3,979,434 |
Benzobicycloalkane amines Benzobicycloalkane amines, their pharmacologically acceptable addition salts, intermediates therefore the processes for their preparation and use. The compounds... |
| US-3,979,433 |
1,6-Di-O-(2-isocyano-3-methylcrotonyl)-D-mannitol compounds Antibiotic A-32390 complex, comprising factor A and other structurally related factors, is produced by cultivation of Pyrenochaeta sp. NRRL 5786 under submerged... |
| US-3,979,432 |
Preparation of nitriles An improved process for the production of aliphatic nitriles having two to six carbon atoms by the reaction of an aliphatic carboxylic acid with ammonia in the... |
| US-3,979,431 |
Process for preparing nitroaromatic nitriles A process for preparing nitroaromatic nitriles which comprises reacting an aromatic carbocyclic nitrile with a mixture of nitric acid and sulfuric acid at a... |
| US-3,979,430 |
Solvolytic process for the preparation of
2-(5H-dibenzo[a,d]cyclohepten-5-on-2-yl)acetic, propionic and... 2-(5H-dibenzo[a,d]cyclohepten-5-on-2-yl) acetic, propionic and butyric acids, and esters and salts thereof, are prepared by solvolysis of nitrile or amide... |
| US-3,979,429 |
Para-amino-.beta.-cyano-bis-styryl compounds The present invention relates to para-substituted-amino-.beta.,.beta.-dicyano- or .beta.-cyano-,.beta.-acyl-distyryl disperse dyes in which the benzene ... |
| US-3,979,428 |
Phenylacetic acids Novel p-cycloalkylphenylacetic acids which are substituted in .alpha.-position by a carbamylthio, loweralkylcarbamylthio, or diloweralkylcarbamylthio group, and... |
| US-3,979,427 |
Conversion of nitroso compounds to isocyanates A process for preparing an organic isocyanate by reacting an organic nitroso compound with carbon monoxide in the presence of a catalyst comprised of a mixture... |
| US-3,979,426 |
Radiation-sensitive diacrylates Novel diacrylates are prepared by reacting a monohydroxylated acrylic monomer with a polyisocyanate. The reaction product may be polymerized by subjecting to... |
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