Abstract:
Manufacture of carboxamides by the addition of water to nitriles in the presence of a copper-containing and magnesium silicatecontaining catalyst which has been treated with a reducing gas. The carboxamides obtained by the process of the invention are valuable starting materials for the manufacture of solvents, flocculating agents, crosslinking agents, pesticides, plant protectants, textile auxiliaries such as levelling agents, waterproofing agents, foam stabilizers and detergents.
Abstract:
Production of alkynols and/or alkynediols by reaction of acetylene with aldehydes in a liquid reaction medium in the presence of a heavy metal acetylide as catalyst and in the presence or absence of basic reagents, at least one of the starting materials being introduced in gaseous form. The catalyst is suspended in the liquid medium and during the reaction a portion of the reaction medium is withdrawn and returned at the entry point below the level of the liquid of the gaseous starting material(s) at a speed of 5 to 100 meters per second into the reaction medium and is introduced into a chamber (located in the reaction medium and extending in the direction of the liquid returned) whose inlet opening has a mean diameter from twice to twenty times the mean diameter of the liquid nozzle and whose length is three to thirty times ints hydraulic diameter. The products are important intermediates for example for the production of solvents or may be used in electrolytic baths.
Abstract:
RECOVERY OF ISOBUTYLENE FROM MIXTURES OF C4-HYDROCARBONS BY ABSORPTION IN A MIXTURE OF TERT-BUTANOL, SULFURIC ACID AND WATER, RECOVERY OF TERT-BUTANOL BY HEATING THE AQUEOUS SOLUTION OF TERT-BUTANOL IN SULFURIC ACID AS AN AZEOTROPE WITH 12% WATER, FRACTIONATION OF THE SAID AZEOTROPE AND DECOMPOSITION OF THE TERT-BUTANOL BY PASSING IT OVER ALUMINA AT ABOUT 300*C.
Abstract:
PROCESS FOR PRODUCING LACTIC ACID BY THE HYDROLYSIS OF LACTIC ACID NITRATE IN WHICH THE LACTICE ACID NITRATE IS REACTED WITH MORE THAN TWICE ITS WEIGHT OF WATER. IT HAS BEEN FOUND THAT HIGH YEILDS OF LACTICE ACID CAN BE OBTAINED EITHER FROM PURE LATICE ACID NITRATE OR FROM THE REACTION PRODUCT CONTAINING IMPURITIES AS WELL AS LACTIC ACID NITRATE.
Abstract:
The production of 2,6-dimethyl-3,4-dihalophenols by reaction of 2,6-dimethyl-4-tertiary-butylphenol with sulfuryl halides. The new products of the process are valuable starting materials for the production of fungicides and bactericides.
Abstract:
THE RECOVERY OF BROMINE AND/OR IODINE FROM THE REACTION PRODUCTS OF OXYDEHYDROGENATIONS OF HYDROCARBONS IN WHICH BROMINE AND/OR IODINE SERVES AS A CATALYST, WHEREIN THE REACTION PRODUCT LEAVING THE REACTOR IS TREATED WITH AN AGUEOUS AMMONIA SOLUTION TO WHICH HAS BEE ADDED AN AMOUNT OF HYDRAZINE SUFFICIENT FOR THE REDUCTION OF THE ELEMENTARY CONSTITUENTS. THE AQUEOUS PHASE IS SEPARATED AND THE BYPRODUCTS CONTAINING BROMINE AND/ OR IODINE SEPARATED IN THE WORKING UP OF THE ORGANIC PHASE ARE BURNT AND OXYGEN-CONTAINING GASES AND THE GAS FROM THE COMBUSTION IS SCRUBBED WITH AN AMMONIA SOLUTION CONTAINING HYDRAZINE.
Abstract:
Production of pure acetylene from a cracked gas obtained by cracking gaseous hydrocarbons, the process comprising a number of steps wherein the higher C3 to C5 hydrocarbons remaining in the crude acetylene are washed out with an organic solvent such as toluene.
Abstract:
PRODUCTION OF PURE ACETYLENE FROM CRACKED GAS, OBTAINED BY CRACKING LIQUID HYDROCARBONS BY, IN PARTICULAR, THE SUBMERGED-FLAME PROCESS, BY COMBINING A NUMBER OF PROCESS STAGES, IN WHICH THE C2 TO C5 HYDROCARBONS CONTAINED IN
THE CRUDE ACETYLENE ARE WASHED OUT WITH AN ORGANIC SOLVENT SUCH AS TOLUENE.
Abstract:
PRODUCTION OF 2,2 - DIMETHYL-1,3-PROPANEDIOLMONO(HY DROXYPIVALATE) BY DISPROPORTIONATION OF HYDROXPIVALALDEHYDE. THE PRODUCT IS A VALUABLE STARTING MATERIAL FOR THE PRODUCTION OF SYNTHETIC RESINS AND PLASTICIZERS.