| Patent Number |
Title Of Patent |
Date Issued |
| 5530169 |
Process for the preparation of saturated, fluorine-containing and chlorine-free hydrocarbons |
June 25, 1996 |
| Saturated, fluorine-containing and chlorine-free hydrocarbons are prepared by catalytically hydrogenating unsaturated, fluorine- and chlorine-containing hydrocarbons at temperatures above 80.degree. C. in the gas phase. |
| 5434310 |
Process for the preparation of acylbenzenes |
July 18, 1995 |
| Acylbenzenes of the formula ##STR1## can be prepared by reaction of benzene with carboxylic acids of the formulawhere R.sup.1 has the meaning given in the text, using a molar ratio of benzene:carboxylic acid=1-50:1 at a temperature of 200.degree.-400.degree. C., a zeolite of the |
| 5334724 |
Preparation of substituted 2-chloropyridines |
August 2, 1994 |
| A process for the preparation of a substituted 2-chloropyridine derivatives of the formula ##STR1## in which R.sup.1, R.sup.2, R.sup.3 and R.sup.4 represent hydrogen or various other radicals, which comprises reacting a pyridine-1-oxide of the formula ##STR2## with an aro |
| 5245082 |
Process for the production of di-(4-aminocyclohexyl)-methane containing 15 to 25% by weight of t |
September 14, 1993 |
| Di-(4-aminocyclohexyl)-methane containing 15 to 25% by weight of the trans-trans isomer can be obtained by the catalytic hydrogenation of di-(4-aminophenyl)-methane at elevated temperature and elevated hydrogen pressure in the presence of a ruthenium-containing supported catalyst con |
| 5233105 |
Process for halogen-fluorine exchange in organic compounds and catalysts for this process |
August 3, 1993 |
| Bismuth/alkaline earth metal catalysts which contain 0.005-0.8 g-atom of bismuth per mol of the alkaline earth metal compound employed and can furthermore contain promoters and/or inert additives, and lanthanide catalysts with or without catalyst supports can be employed as catalysts |
| 5180861 |
Process for the preparation of polychloro-fluoro-cyclo-pentenes |
January 19, 1993 |
| Polychloro-fluoro-cyclopentenes can be prepared by catalytic reaction of hexachlorocyclopentadiene with hydrogen fluoride in the gas phase with the addition of chlorine. |
| 5166440 |
Process for the preparation of n-alkylated aromatic amines |
November 24, 1992 |
| Aromatic amines, alkylated on the N-atom, can be prepared by catalytic alkylation of aromatic amines with alcohols or the corresponding ethers or by transalkylation with aromatic amines alkylated on the N-atom, whereby niobic acid or tantalic acid is used as the catalyst. |
| 5145961 |
Process for the preparation of 5-fluoropyrimidines |
September 8, 1992 |
| 5-Fluoropyrimidines are obtained in an advantageous manner from halogenated 5-unsubstituted pyrimidines, when these are reacted with elemental fluorine in the presence of a solvent. |
| 5097071 |
Supported copper catalyst, process for its preparation and process for the preparation of N-alky |
March 17, 1992 |
| The novel copper catalyst on an Al.sub.2 O.sub.3 -containing carrier which is impregnated with compounds of manganese and of one or more rare earth metals, having a Cu content of 0.1-5% by weight, a total content of compounds of manganese and of the rare earth metal or metals of 0.05 to |
| 5087747 |
Process for the preparation of trifluoromethanesulphenyl chloride |
February 11, 1992 |
| Trifluoromethanesulphenyl chloride is prepared by reacting bis-(trifluoromethyl)disulfane in the liquid phase with chlorine in the presence of a strong acid. |
| 5068343 |
4-substituted 5-chloro-2-hydrazinothiazoles |
November 26, 1991 |
| 4-Substituted 5-chloro-2-hydrazinothiazoles of the formula ##STR1## in which R represents CHF.sub.2, CF.sub.3, CN or COOR.sup.1, whereR.sup.1 represents C.sub.1 -C.sub.4 -alkyl.They are useful as pesticides and as intermediates for other pesticides. |
| 5041683 |
Nuclear-fluorinated trifluoromethylbenzaldehydes |
August 20, 1991 |
| Process for the preparation of nuclear-fluorinated trifluoromethylbenzaldehydes from nuclear-chlorinated trifluoromethylbenzaldehydes, and new nuclear-fluorinated trifluoromethylbenzaldehydes. |
| 4978771 |
Process for the selective hydrogenation of unsatuated compounds |
December 18, 1990 |
| The selective hydrogenation of unsaturated compounds which carry reducible groups containing nitrogen succeeds in a homogeneous phase with the preservation of the reducible groups containing nitrogen, characterized in that a compound of the formulais used as a catalyst, in whichL signifi |
| 4978769 |
Process for introducing fluorine atoms into aromatic rings by nucleophilic exchange |
December 18, 1990 |
| Aromatic, ring-fluorinated compounds are particularly advantageously prepared by nucleophilic exchange in the course of reaction wih potassium fluoride in the presence of phase transfer catalysts and, if desired, solvents by carrying out the reaction in the additional presence of metal |
| 4962246 |
Process for the preparation of benzotrifluorides which are substituted by fluorine and optionall |
October 9, 1990 |
| Benzotrifluorides substituted by fluorine and optionally in addition by chlorine, some of which are new, are prepared by hydrogenating benzotrifluorides which are substituted by fluorine and chlorine, in the presence of a catalyst and a hydrogen chloride acceptor. |
| 4885415 |
Process for the preparation of benzotrifluorides which are substituted by fluorine and optionall |
December 5, 1989 |
| Benzotrifluorides substituted by fluorine and optionally in addition by chlorine, some of which are new, are prepared by hydrogenating benzotrifluorides which are substituted by fluorine and chlorine, in the presence of a catalyst and a hydrogen chloride acceptor. |
| 4822912 |
Process for the preparation of 2,3,5,6-tetrafluorobenzoic acid |
April 18, 1989 |
| 2,3,5,6-Tetrafluorobenzoic acid is prepared by hydrogenolysis of pentafluorobenzoic acid (esters). |
| 4820735 |
Vinylcyclopropanecarboxylic acid esters |
April 11, 1989 |
| Novel insecticidally and acarididally active vinylcyclopropanecarboxylic acid esters of the formula ##STR1## in which R represents alkylthio, alkylsulphinyl, alkylsulphonyl,amino, monoalkylamino or dialkylamino, and whereinX and Y either simultaneously represent halogen orX and Y simulta |
| 4812587 |
Process for selective hydrogenation of C--C double bonds in the presence of reducible, nitrogen- |
March 14, 1989 |
| Carbon-carbon double bonds are hydrogenated selectively in a compound containing a reducible, nitrogen-containing group if the hydrogenation is carried out in the presence of a ruthenium complex catalyst. Also disclosed are new ruthenium complexes for use in such selective hydrogenat |
| 4795788 |
Process for the selective hydrogenation of unsaturated polymers containing nitrile groups |
January 3, 1989 |
| Unsaturated polymers containing nitrile groups can be hydrogenated with the preservation of the nitrile group in a homogeneous phase with a catalyst of the formula:in whichX represents hydrogen, halogen or SnCl.sub.3,L.sub.1 represents optionally substituted indenyl,L.sub.2 represents a phos |
| 4755621 |
Process for the preparation of 2,3,5,6-tetrafluorobenzoic acid, and the new compounds 2,3,5,6-te |
July 5, 1988 |
| 2,3,5,6-Tetrafluorobenzoic acid is prepared from 4-trifluoromethyl-benzoyl fluoride by chlorination, fluorination, hydrolysis, decarboxylation and saponification. The new compounds 2,3,5,6-tetrachloro-4-trifluoromethyl-benzoyl chloride and 2,3,5,6-tetrafluoro-4-trifluoromethyl-benzoy |
| 4699922 |
Tetramethylcyclopropanecarboxylates |
October 13, 1987 |
| Pesticidal compositions useful in protecting plants and also in the hygiene field are disclosed. The new tetramethylcyclopropanecarboxylates have the formula ##STR1## where R represents mercapto, methylthio, alkylsulphenyl or alkylsulphonyl. |
| 4673757 |
Process for selective hydrogenation of C-C double bonds in the presence of reducible, nitrogen-c |
June 16, 1987 |
| Carbon-carbon double bonds are hydrogenated selectively in a compound containing a reducible, nitrogen-containing group if the hydrogenation is carried out in the presence of a ruthenium complex catalyst. Also disclosed are new ruthenium complexes for use in such selective hydrogenat |
| 4617255 |
Color coupler-containing photographic material |
October 14, 1986 |
| Cyan couplers of the formula: ##STR1## wherein R=a ballast groupX=H or a leaving group which may be separated during color couplingY=halogen, alkyl, alkoxy, aryl or alkylthion=0 to 2 (if n=2, the radicals Y may be the same or different)have good dark fading stability of the coupled dye, more |
| 4536344 |
Process for formylating aryl halides |
August 20, 1985 |
| Aryl halides are formylated with carbon monoxide and hydrogen in the presence of a noble metal catalyst, tertiary organic nitrogen compounds and phosphanes or phosphites. |
| 4505860 |
Cyclic keto-butyraldehydes a process for their preparation, and their use in the preparation of |
March 19, 1985 |
| New cyclic keto-butyraldehydes of the formula ##STR1## in which R.sub.1 and R.sub.2 are either identical or different and denote hydrogen or lower alkyl and in which the cycloaliphatic ring may contain a double bond, can be prepared from the corresponding cyclic keto-olefins in t |
| 4495369 |
Process for the preparation of neopentylamine |
January 22, 1985 |
| A process for the preparation of neopentylamine which is virtually free from amines with a higher degree of alkylation which comprises contacting neopentanol with ammonia at a temperature of 200.degree. to 300.degree. C. in the presence of a hydrogenation catalyst. The process can be car |
| 4487966 |
3-Aminomethyl-1-(3-aminopropyl-1-methyl)-4-methylcyclohexane, a process for its preparation and |
December 11, 1984 |
| 3-Aminomethyl-1-(3-aminopropyl-1-methyl)-4-methylcyclohexane and a process for the preparation of this new compound, which uses limonene and/or monohydroformylation products of limonene as starting substances and proceeds via a dihydroformylation product of limonene. The new compound is |
| 4420433 |
Process for the preparation of fluorine-substituted carboxylic acid chlorides and their use |
December 13, 1983 |
| Fluorine substituted carboxylic acid chlorides are prepared from the corresponding fluorine substituted carboxylic acid fluorides by reaction with silicon tetrachloride, or titanium tetrachloride, optionally in the presence of a catalyst. The so-prepared fluorine substituted carboxylic |
| 4270998 |
Process for the preparation of optionally substituted acetonitriles monohalogenated in the .alph |
June 2, 1981 |
| A process for the preparation of an optionally substituted acetonitrile monohalogenated in the .alpha.-position which comprises contacting an excess of an optionally substituted acetonitrile of the formulawhereinR denotes hydrogen, aliphatic or aryl continuously at an elevated temperatur |
| 4251462 |
Aminomethyl cyclododecanes, a process for their production and their use as corrosion inhibitors |
February 17, 1981 |
| The instant invention is directed to aminomethyl cyclododecanes selected from the group consisting of aminomethyl cyclododecanes, bis-(aminomethyl)-cyclododecanes, tris-(aminomethyl)-cyclododecanes and mixtures thereof. The invention is also directed to a process for producing aminom |
| 4146559 |
Cycloaliphatic diamines |
March 27, 1979 |
| Compounds are disclosed which correspond to the general formula: ##STR1## in which N AND M WHICH ARE THE SAME OR DIFFERENT HAVE THE VALUES 0, 1 OR 2,R, r.sub.1 and R.sub.2 which are the same or different, represent hydrogen or CH.sub.3 -groupsAnd either(a) R.sub.3 and R.sub.5 represe |
| 4101578 |
Cycloaliphatic triamines |
July 18, 1978 |
| This invention relates to new cycloaliphatic triamines which are valuable intermediate products for synthetic resins, above all for lightfast and weather resistant polyurethane resins and in particular for solvent-free or low solvent polyurethane lacquers. |
