133117-08-5

Upstream product

• 7027-11-4 isophoronenitrile 
• 78-59-1 3,5,5-Trimethylcyclohex-2-en-1-one 
• 79848-85-4 3-cyano-3,5,5-trimethylcyclohexaneimine 

Relevant academic research and scientific papers

Method for preparing IPDI (isophorone diisocyanate)

The invention discloses a method for preparing IPDI (isophorone diisocyanate). The method comprises the following steps: (1) isophorone and hydrogen cyanide are subjected to a reaction in the presenceof a catalyst to obtain isophorone nitrile; (2) isophorone nitrile obtained in step (1), ammonia and hydrogen are subjected to a reaction in the presence of a catalyst to obtain isophorone diamine; (3) isophorone diamine is subjected to a phosgenation reaction to obtain IPDI, wherein the content of impurities containing secondary amine groups in isophorone diamine subjected to the phosgenation reaction in step (3) is smaller than or equal to 0.5wt%, preferably smaller than or equal to 0.3wt%, and more preferably smaller than or equal to 0.1wt%. By means of the method, content of hydrolyzed chlorine in the IPDI product can be effectively reduced, the yellowing resistance of the product is effectively improved, and the harm that downstream products are unqualified due to existence of hydrolyzed chlorine in the product is reduced.

3-aminomethyl -3, 5, 5-trimethyl method for preparing cyclohexylamine (by machine translation)

The present invention provides a 3-aminomethyl -3, 5, 5-trimethyl method for preparing cyclohexylamine. 3-cyano -3, 5, 5-trimethyl cyclohexyl imine the inferior amination reaction material, in the subsequent steps, with the assistance of the circulating material in the 1st 1st-stage hydrogenation reaction by the hydrogenation reaction material, and can effectively inhibit the generation of HCN product, then in the heating can decompose under the action of the alkaline additive to 2nd stage hydrogenation reaction, then heating the alkaline additive decomposition, decomposition reaction material as circulation material part of a 1st-stage hydrogenation reaction to return as adjuvant, 3rd levels of the remaining part of the hydrogenation reaction, to obtain 3-aminomethyl -3, 5, 5-trimethyl cyclohexane, in the product can be effectively reduced 3-cyano -3, 5, 5-trimethyl cyclohexane and secondary amines the content of the product. (by machine translation)

Fungicidal heterocyclic aromatic amides and their compositions, methods of use and preparation

Heterocyclic aromatic amides having a hydroxy group adjacent to the amide functionality are useful as antifungal agents, particularly for plants.

3-AMINOMETHYL-3, 5, 5-TRIMETHYL CYCLOHEXYLAMINE PREPARATION METHOD

Provided is a 3-aminomethyl-3,5,5-trimethylcyclohexylamine preparation method. A feeding flow of 3-cyano-3,5,5-trimethylcyclohexylimine is reacted with NH3 and hydrogen in the presence of a hydrogenation catalyst; the method is characterized by: firstly adding a basic compound to the feeding flow of 3-cyano-3,5,5-trimethylcyclohexylimine, and then after a portion of 3-cyano-3,5,5-trimethylcyclohexylimine has reacted, adding an acidic compound to reaction materials for further hydrogenation reaction to prepare the product. The method ensures that the aminonitrile content in the product is low, thus effectively reducing the duration of the reaction and greatly reducing the consumption of the catalyst during the hydrogenation reaction process.

3-AMINOMETHYL-3, 5, 5-TRIMETHYL CYCLOHEXYLAMINE PREPARATION METHOD

Provided is a 3-aminomethyl-3,5,5-trimethylcyclohexylamine preparation method. A feeding flow of 3-cyano-3,5,5-trimethylcyclohexylimine is reacted with NH3 and hydrogen in the presence of a hydrogenation catalyst; the method is characterized by: firstly adding a basic compound to the feeding flow of 3-cyano-3,5,5-trimethylcyclohexylimine, and then after a portion of 3-cyano-3,5,5-trimethylcyclohexylimine has reacted, adding an acidic compound to reaction materials for further hydrogenation reaction to prepare the product. The method ensures that the aminonitrile content in the product is low, thus effectively reducing the duration of the reaction and greatly reducing the consumption of the catalyst during the hydrogenation reaction process.

PROCESS FOR PREPARING AMINES BY CONDITIONING THE CATALYST WITH AMMONIA

The invention relates to a process for preparing amines by conditioning the catalyst with ammonia.

METHOD FOR THE PRODUCTION OF ISOPHORONDIAMINE (IPDA, 3-AMINOMETHYL-3,5,5-TRIMETHYLCYCLOHEXYLAMINE) HAVING A HIGH CIS/TRANS-ISOMER RATIO

The invention relates to a method for the production of 3 aminomethyl-3,5,5- trimethylcyclohexylamine (isophorondiamine, IPDA) which has a high cis/trans isomer ratio. IPDA having a cis/trans isomer ratio in the range of 63/37 - 66/34 can be obtained in a temperature-independent manner by reacting IPDA having any particular cis/trans isomer ratio with H2 and NH3 in the presence of a hydrogenating catalyst. IPDA having a cis/trans isomer ratio of at least 73/27, which is an important starting material for the synthesis of polyurethanes and polyamides, can be obtained by combining said isomerization method with distillation methods.