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6689895 |
4, 8-dodecadienedinitrile and process for its production
The present invention relates to a novel compound 4,8-dodecadienedinitrile represented by the following formula (1): wherein means a cis or trans bond, and a process for preparing...
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6380420 |
Process for making fatty acid nitriles and fatty amines by cross-metathesis of normal alpha olefins
A process for preparing fatty amines by the cross-metathesis of normal alpha olefins and acrylonitrile to form an intermediate fatty acid nitrile which is hydrogenated to the corresponding fatty...
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5834617 |
Selective dimerization of pentenenitrile
The present invention relates to a process for selective dimerization of 2-pentenenitrile or mixtures of 2- and 3-pentenenitrile in the presence of a strong base to form 1,3-dicyano-2-ethyl-3-hexene.
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5475131 |
Process for the preparation of a mixture of aminomethylenated glutaconic acid dinitriles
Aminomethylenated glutaconic acid dinitriles of the formula ##STR1## in which R 1 and R 2 independently of one another represent hydrogen, straight-chain or branched C 1 -C 8 -alkyl, C 3 -C 8 ...
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5354777 |
Cyanoalkene derivatives, process for their preparation, and their use as microbicide for the protection of materials
New cyanoalkene derivatives of the formula (I) ##STR1## are described, in which R and R 1 have the meaning given in the description, and a process for their preparation. The new cyanoalkene...
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5312956 |
Synthesis of low viscosity non-functional terminated polymers
A non-functional liquid rubber is prepared by the solution polymerization of vinyl monomers. The polymer may be a homopolymer or a copolymer. As a copolymer the preferred monomers are a conjugated...
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4705650 |
Process for the preparation of compounds halogenated α to an electron-attracting group
Compounds halogenated in the α-position to an electron-attracting group of formula ##STR1## in which X denotes a halogen atom, R denotes a hydrogen atom or a hydrocarbon radical or a radical --(CH...
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4634789 |
Conversion of acetonitrile to glycolonitrile and/or glycolamide
The vapor phase oxidation of acetonitrile with molecular oxygen in the presence or absence of water vapor to produce glycolonitrile or glycolamide in the presence of a vanadium oxide based catalyst.
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4604244 |
Process for making adiponitrile precursors
Disclosed is the reaction of propylene with acrylonitrile or acrylamide to make a cyano- or amidopentene and reacting that compound with NH 3 and O 2 to form mucononitrile or...
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4435251 |
Method for purification of 2-methyleneglutaronitrile
Crude 2-methyleneglutaronitrile containing as impurities a metal halide, a trialkylamine, and the trimer or a higher polymer of acrylonitrile can be effectively purified by treating the crude...
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4425260 |
Catalysts for the oxidation and ammoxidation of alcohols
Catalysts useful for the oxidation and ammoxidation of alcohols containing the elements iron and molybdenum in a catalytically active oxidized state exhibit improved selectivity and yield upon...
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4298545 |
Process for producing phthalonitrile
Phthalonitrile is produced in a good yield by contacting a xylylenediamine condensate with an oxide catalyst of silica or alumina system in the presence of a molecular oxygen-containing gas or a...
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4260556 |
Process for preparing nitrogen-containing compounds from 2-pentenenitrile
A process is provided for preparing non-aromatic, nitrogen-containing compounds represented structurally as: ##STR1## wherein R is CN or CH 2 NH 2 , and R 1 and R 2 are hydrogen or C 2 H 5 ...
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4255352 |
Preparation of unsaturated nitriles
An olefinically unsaturated nitrile, an olefinic hydrocarbon containing an allylic hydrogen and a monoadduct reaction product of an olefinic hydrocarbon and an olefinically unsaturated nitrile are...
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4217299 |
Method for converting unsaturated compound having functional group
A method for the conversion of an unsaturated compound having a functional group, characterized by contacting [1] at least one compound selected from the group consisting of carboxylic acid esters,...
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4211725 |
Nitrogen containing compositions
Novel nitrogen containing compounds are provided which are represented structurally as ##STR1## wherein R is CN or CH 2 NH 2 , and R 1 and R 2 are hydrogen or C 2 H 5 --CH--CH 2 R wherein R...
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4117002 |
Pyrolysis of heavies formed in production of unsaturated dinitriles
An olefinically unsaturated mononitrile is reacted with a monoadduct of an olefinically unsaturated mononitrile and an olefinically unsaturated hydrocarbon compound to produce a dinitrile product...
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4117001 |
Pyrolysis of heavies formed in production of unsaturated dinitriles
An olefinically unsaturated mononitrile is reacted with a monadduct of an olefinically unsaturated mononitrile and an olefinically unsaturated hydrocarbon compound to produce a dinitrile product...
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4105688 |
Process for the production of malonic acid dinitrile and purification thereof
Malonic acid dinitrile is prepared by reacting acetonitrile and cyanogen chloride in the gaseous phase at temperatures from 740° to 780° C. Temperatures from 750° to 760° C. with molar ratios...
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4088672 |
Preparation of dicyanobutenes from 3-pentenenitrile
Dinitriles are obtained by heating an olefinically unsaturated mononitrile in presence of an olefin disproportionation catalyst, for example, 3-pentenenitrile gives dicyanobutenes.
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4021465 |
Unsaturated dinitrile preparation
In processes of preparing unsaturated dinitriles from olefins, unsaturated mononitriles, and a monoadduct reaction product of an olefin and an unsaturated mononitrile in which undesirable...
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4011254 |
Process for the purification of diaminomaleonitrile
Diaminomaleonitrile which is produced by the tetramerization of hydrogen cyanide is purified by heating a crude diaminomaleonitrile in an inert liquid or in an inert atmosphere at a temperature of...
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4001294 |
Method of preparing unsaturated dinitriles
In processes of preparing mixed, isomeric C 10 unsaturated dinitriles from acrylonitrile and isobutylene in which 5-methyl-4-hexenenitrile is formed, the method of inhibiting the formation of that...
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3974196 |
Method for disproportionating ethylenically unsaturated compounds having functional ester groups
A method for the conversion of an unsaturated compound having a functional group, characterized by contacting [1] at least one compound selected from the group consisting of carboxylic acid esters,...
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3960921 |
Dihalodicyano alkenes
Described herein are novel dihalodicyano alkene compounds having the formula ##EQU1## having from 6 to 38 carbon atoms per molecule, wherein X is chloro or bromo; each R is individually selected...
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3959344 |
Process for the preparation of diaminomaleonitrile
In the preparation of diaminomaleonitrile by polymerization of hydrogen cyanide, the improvement which comprises employing, as a reaction solvent, at least one mononitrile compound selected from...
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3929860 |
Sulfolane or aqueous sulfolane as diluent for preparation of unsaturated nitriles from lower unsaturated nitriles and olefins
An olefinically unsaturated nitrile is reacted with an olefinic hydrocarbon containing an allylic hydrogen in the presence of at least one diluent selected from the group consisting of sulfolane...
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3900511 |
Process for the preparation of aminomethylene malononitrile
This invention is directed to a process for the preparation of aminomethylene malononitrile from dialkyl aminoacylonitrile including intermediates therein. Aminomethylene malononitrile is a known...
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3886197 |
Organic nitrogen-fluorine compounds and their preparation
Dinitrogen tetrafluoride reacts with internally unsaturated acetylenes, e.g., hexafluoro-2-butyne, to produce isomeric fluoroimino fluoro amines and fluoro diamines, e.g., ##SPC1## That can be used...
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3864381 |
Recovery of dicyanobutene from dicyanobutene process brine
An improved process for recovering dicyanobutene from a process brine resulting from reaction of dichlorobutene with an aqueous solution of sodium cyanide which comprises contacting the brine with...
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3853947 |
PURIFYING 1,4-DICYANOBUTENES
Recovery of pure 1,4-dicyanobutenes from 1,4-dicyanobutenes containing halogen, particularly chlorine or bromine, by treatment with a hexamethylenediamine or with dihexamethylenetriamine in the...
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3846471 |
SEPARATION AND PURIFICATION OF CRUDE 1,4-DICYANO-2-BUTENE
Process for separating and purifying of crude 1,4-dicyano-2-butene obtained by reaction of 1,4-dichloro-2-butene and/or 1,2-dichloro-3-butene with hydrocyanic acid or sodium cyanide in the presence...
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3336359 |
Dicyanoacetylene synthesis
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3322816 |
Process for preparing dicyanoacetylene
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3285949 |
Carboxyl-terminated butadiene polymers prepared in tertiary butanol with bis-azocyano acid initiation
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3239518 |
Charge transfer complexes of tetrakisamino ethylenes
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3213125 |
Substituted 1, 3-dienes and process for preparing the same
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3201399 |
Onium tetracyanoethylenides
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3183250 |
Epoxides from ethylenic compounds containing electron-withdrawing groups
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3154573 |
Process for preparing fluorinated dinitriles
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3133115 |
1, 2-di(fluorohaloalkyl)-1, 2-dicyano-ethylenes and their preparation
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3127437 |
Organic halonitrates and method of preparation
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3096337 |
Process for the preparation of amino-halogenopyridines
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3093653 |
Heterocyclic products from cyanogen and cyanides and process
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3070622 |
Process for the preparation of dicyanoacetylene
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3057875 |
Substituted 2-methylene-4, 5-dicyano-1, 3-dithiolen compounds
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3055738 |
Production of nitriles
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3018277 |
Extracting a liquid diene polymer with a liquid hydrocarbon and method of preparing casting of said extracted diene polymer
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2964505 |
1, 4 dienes, polymers thereof, and process for preparing said dienes
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2956075 |
Method for preparing 1, 8-dicyan-2, 6-octadiene
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