Abstract:
Certain organic reactants which are free from aliphatic unsaturation and which are capable of yielding free radicals upon treatment with peroxides are oxidized, in the liquid phase in an aqueous medium, with certain peroxy compounds to form freeradical intermediates which are then allowed to react further with themselves or with other components of the reaction medium to form useful end products. Preferred features include the slow addition of the peroxy compound to the reaction zone and the use of certain metalic ions to improve yields. The process may be used for the reaction of HCN and carboxylic acids to produce nitriles; the conversion of tertiary alkanols to ketones; and the production of cyanogen from hydrogen cyanide.
Abstract:
WHEREIN R IS AN ALKENYL, ALKINYL, ALKENYLOXYALKYL OR CYCLOALKENYL GROUP, AND AT LEAST 0.1% BY WEIGHT BASED ON THE WEIGHT OF THE COMPOSITION IS NOT ONLY INSTANTI ANEOUSLY ADHESIVE ADHESIVE COMPOSITION IS NOT ONLY INSTANTANEOUSLY ADHESIVE AT ROOM TEMPERATURE BUT ALSO HAS A SUFFICIENTLY PRACTICAL BONDING STRENGTH EVEN AT SUCH A HIGH TEMPERATURE AS 150* C. OR B ABOVE.
CH2=C(CN)COOR
A HEAT-RESISTANT ADHESIVE COMPOSITION COMPRISING A RADICAL POLYMERIZABLE A-CYANOACRYLATE REPRESENTED BY THE FORMULA,
Abstract:
A METHOD OF PREPARING ACETONITRILE BY THE CATALYTIC AMMONIATION OF ETHYLENE AND/OR PROPYLENE BY PASSING A MIXTURE OF ETHYLENE AND/OR PROPYLENE AND AMMONIA THROUGH A BED OF A CATALYST AT A TEMPERATURE OF ABOUT 300-600*C. WHEREIN THE CATALYST IS A NITRIDE OF TUNGSTEN OR IRON.
Abstract:
A process for preparing acetonitrile by high temperature reaction of carbon monoxide, hydrogen and ammonia over a transition metal in reduced valence state as catalyst.
Abstract:
Pure acetonitrile is recovered from aqueous acetonitrile by extracting with an organic solvent which has little miscibility with water, boils higher than acetonitrile and does not form an azeotrope with acetonitrile. The portion of the extract boiling up to 76*C is distilled off. The remaining acetonitrile containing more difficulty volatile portion is freed from the residual water by addition of an entraining agent and recovering the pure acetonitrile by a fractional distillation.
Abstract:
A PROCESS IS PROPOSED FOR THE PREPARATION OF A REACTION PRODUCT CONTAINING AT LEAST ONE COMPOUND SELECTED FROM AN ALKYL NITRILE, A FATTY ACID AND A FATTY ACID AMIDE. THE PROCESS COMPRISES REACTING A 1-NITRO-2-NITROSOALKANE, SUCH AS 1-NITRO-2-NITROSOHEXANE, OR A 1-NITROALKANONE-2 OXIME, SUCH AS 1-NITROHEXANONE-2 OXIME, WITH AQUEOUS SULFURIC ACID IN WHICH THE CONCENTRATION OF THE H2SO4 IS SUFFICIENT TO FORM A ONE PHASE REACTION MEDIUM WITH THE 1-NITRO CONTAINING CHARGE STOCK AND, OPTIONALLY, IN THE PRESENCE OF A LOWER ALKYL FATTY ACID, SUCH AS ACETIC ACID, AS A DILUENT. PHOSPHORIC ACID IN THE SAME CONCENTRATION RANGE CAN BE SUBSTITUTED FOR THE SULFURIC ACID TO PRODUCE A REACTION PRODUCT CONTAINING AT LEAST ONE COMPOUND SELECTED FROM A FATTY ACID AND A FATTY ACID AMIDE.
Abstract:
A method is provided for synthesizing alkylnitriles and alkylaminonitriles by reacting formaldehyde, a C.sub.1 -C.sub.5 monohydric alcohol and a compound having the formula R.sub.1 R.sub.2 NH where R.sub.1 and R.sub.2 are selected from the group consisting of hydrogen and alkyl groups containing 1 to 5 carbon atoms under effective conditions in the presence of a catalyst comprising a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12 and a constraint index within the approximate range of 1 to 12 and recovering from the resulting reaction mixture, a product containing at least one of the above nitrile compounds.
Abstract:
The present invention refers to a process for the purification of acetonitrile from crude acetonitrile or mixtures containing the same, which comprises the following operations:(a) transformation of hydrogen cyanide and acrylonitrile into compounds of higher molecular weight,(b) removal of most of the water in an azeotropic distillation column, and(c) separation of acetonitrile from the compounds of higher molecular weight and residual water in rectifying columns.
Abstract:
A PROCESS FOR PURIFYING NITRILE-CONTAINING COMPOSITIONS, PARTICULARLY COMPOSITIONS CONTAINING HYDROCYANIC ACID OR NITRILES SUCH AS ACRYLONITRILE. THE PROCESS INVOLVES FREEING THE NITRILES OF EPOXIDE IMPURITIES BY CONVERTING THE LATTER TO THE CORRESPONDING GLYCOLS BY HYDRATION IN THE PRESENCE OF ACIDS. THE NITRILES ARE THEN DISTILLED TO LEAVE THE GLYCOLS AS TAIL PRODUCTS.