摘要:
The present invention relates to a process for preparing ethylene urea in solid form, in which a water-comprising product melt of ethylene urea is cooled on a breaking-up apparatus and the water content of the solid obtained is from 5 to 15% by weight. Furthermore, the invention relates to ethylene urea as solid prepared by a process according to the invention, wherein the water content of the solid is from 5 to 15% by weight and the solid displays lasting powder flow.
摘要:
The present invention relates to a process for preparing ethylene urea in solid form, in which a water-comprising product melt of ethylene urea is cooled on a breaking-up apparatus and the water content of the solid obtained is from 5 to 15% by weight. Furthermore, the invention relates to ethylene urea as solid prepared by a process according to the invention, wherein the water content of the solid is from 5 to 15% by weight and the solid displays lasting powder flow.
摘要:
Process for preparing tri-n-propylamine (TPA), wherein di-n-propylamine (DPA) is reacted in the presence of hydrogen and a copper-comprising heterogeneous catalyst.An integrated process for preparing TPA, which comprises the following operations: I) reaction of n-propanol with ammonia in a reactor in the presence of an amination catalyst and optionally hydrogen to form a mixture of mono-n-propylamine, DPA and TPA, II) separation of unreacted ammonia, unreacted n-propanol and possibly hydrogen from the reaction product mixture and recirculation of at least the ammonia and propanol to the reactor in I) and also separation of the n-propylamine mixture by distillation and isolation of the TPA, III) reaction of the DPA obtained in the separation by distillation in II) in a reactor in the presence of hydrogen and a copper-comprising heterogeneous catalyst to form TPA and IV) feeding of the reactor output from III) to operation II).
摘要:
Process for preparing tri-n-propylamine (TPA), wherein di-n-propylamine (DPA) is reacted in the presence of hydrogen and a copper-comprising heterogeneous catalyst. An integrated process for preparing TPA, which comprises the following operations: I) reaction of n-propanol with ammonia in a reactor in the presence of an amination catalyst and optionally hydrogen to form a mixture of mono-n-propylamine, DPA and TPA, II) separation of unreacted ammonia, unreacted n-propanol and possibly hydrogen from the reaction product mixture and recirculation of at least the ammonia and propanol to the reactor in I) and also separation of the n-propylamine mixture by distillation and isolation of the TPA, III) reaction of the DPA obtained in the separation by distillation in II) in a reactor in the presence of hydrogen and a copper-comprising heterogeneous catalyst to form TPA and IV) feeding of the reactor output from III) to operation II).
摘要:
Herbicidal agents containing at least one thiochromenone of the formula I ##STR1## where n is 1, 2, 3 or 4, and the radicals R.sup.3 may have different meanings when n is>1;R.sup.1 is hydrogen; cyano; halogen; substituted or unsubstituted alkyl, aryl or hetaryl;a group --XR.sup.4 or a group --COYR.sup.4, whereX is oxygen, sulfur and NR.sup.5,Y is oxygen and NR.sup.5,R.sup.4 is one of the following groups:hydrogen; formyl; alkyl; cycloalkyl; alkylcarbonyl; cycloalkylcarbonyl; alkylsulfonyl; cycloalkylsulfonyl;substituted or unsubstituted aryl, hetaryl, arylcarbonyl, hetarylcarbonyl, arylsulfonyl or hetarylsulfonyl;andR.sup.5 is hydrogen or substituted or unsubstituted alkyl, aryl or hetaryl;R.sup.2 is hydrogen; cyano; nitroso; nitro; halogen; substituted or unsubstituted alkyl, alkoxy, alkylthio, aryl or hetaryl;a group --NR.sup.4 R.sup.5 or a group --COYR.sup.4, whereY, R.sup.4 and R.sup.5 have the above meanings;R.sup.3 is hydrogen; cyano; halogen; substituted or unsubstituted alkyl, aryl or hetaryl;a group --YR.sup.4, a group --COYR.sup.4, a group --COR.sup.6 or a group --SO.sub.2 R.sup.7, whereY and R.sup.4 have the above meanings;R.sup.6 is one of the following groups:hydrogen; alkyl; cycloalkyl; substituted or unsubstituted aryl or hetaryl;andR.sup.7 is hydrogen; alkyl; cycloalkyl; substituted or unsubstituted aryl or hetaryl;or a group --NR.sup.4 R.sup.5, where R.sup.4 and R.sup.5 have the above meanings,and the plant-tolerated salts of those compounds I in which one or several of the substituents denote an acidic or basic group,and at least one herbicidal active ingredient.
摘要:
The present invention relates to a process for preparing 1-adamantyltrimethylammonium hydroxide, by A) reacting 1-adamantyldimethylamine with dimethyl sulfate to give 1-adamantyltrimethylammonium sulfate; and B) subjecting the 1-adamantyltrimethylammonium sulfate obtained in A) to anion exchange with an ion exchanger loaded with OH ions.
摘要:
Brightener mixtures containing from 75% by weight to 100% by weight, based on the weight of the mixture, of the bisstyryl compounds of the formulae I and II ##STR1## in a weight ratio from 10:90 to 70:30, formulations containing the novel mixtures, and also their use for optically brightening synthetic, semisynthetic or natural polymer materials.