Abstract:
The present invention relates to relates to an amine composition, the use of said amine composition, a curing agent composition, a curable composition, a cured epoxy resin as well as methods for producing said amine composition, said curing agent composition, said curable composition and said cured epoxy resin. Furthermore, the present invention relates to reactive polyamide resins obtainable from said amine composition, a method for their manufacture and their use. Method for the production of the amine composition comprises following steps: A) conversion of formaldehyde (FA), hydrogen cyanide (HCN) and ethylenediamine (EDA); B) hydrogenation of the reaction mixture obtained in step A); and C) purification of the hydrogenated reaction mixture obtained in step B), wherein the purification step C) comprises 1) removal of hydrogen; 2) removal of organic solvent and water; 3) passing the reaction mixture obtained in step 2) to an evaporator operated at a pressure in the range of 5 to 500 mbar and a temperature in the range of 100 to 250 °C; 4) removal of the gaseous phase from the evaporator; and 5) condensation of the gaseous phase.
Abstract:
processo para preparar compostos orgânicos, vaporizador, e, uso de um vaporizador de câmara única. a invenção refere-se a um método melhorado para evaporar compostos orgânicos e a posterior reação dos mesmos.
Abstract:
The invention relates to a method for producing EDDN and/or EDMN by reacting FA HCN and EDA the reaction being carried out in the presence of water and separating the water from the reaction mixture in a distillation column after the reaction characterized in that distillation is carried out in the presence of an organic solvent which at the distillation pressure prevailing in the column has a boiling point between that of water and EDDN and/or EDMN or which forms a low boiling azeotrope with water.
Abstract:
A process is described for isomerizing pentenenitrile in a reactant stream, wherein the isomerization is effected over a heterogeneous catalyst in a distillation column in such a way that, during the isomerization of the isomerization reactant, it is distillatively depleted in relation to the isomerization product in the reaction column of the distillation column.
Abstract:
Preparation of nickel(0)-phosphorus ligand complexes (Q) containing at least a nickel(0) as central atom and at least a ligand containing phosphorus comprises reacting a nickel(II) compound with a reducing agent in the presence of the ligand to obtain a reaction mixture and extracting the obtained reaction mixture by adding at least a dinitrile, at least a hydrocarbon and at least two immiscible phases. Preparation of nickel(0)-phosphorus ligand complexes (Q) containing at least a nickel(0) as central atom and at least a ligand containing phosphorus comprises reacting a nickel(II) compound with a reducing agent in the presence of the ligand to obtain a reaction mixture, and extracting the obtained reaction mixture by adding at least a dinitrile, at least a hydrocarbon and at least two immiscible phases, where: the amount of nickel(0) content in the reaction mixture is at most 1.3 wt.%; the molar ratio of: the reducing agent to the nickel(II) compound is 1:1-1000:1, which is calculated as the molar ratio of the redox equivalent, and the ligand containing phosphorus to the nickel(II) compound is at most 30:1, which is calculated as the molar ratio of phosphorus and nickel atoms. Independent claims are included for: (1) a mixture comprising (Q), obtained by the above process; and (2) a method for the isomerization of unsaturated nitrile to linear unsaturated nitrile using (Q) as catalyst, which is regenerated by circulation method.