6693-29-4

Basic information

• Product Name: [trans(trans)]-4,4'-methylenebis(cyclohexylamine)
• Synonyms: [trans(trans)]-4,4'-methylenebis(cyclohexylamine);4α,4'α-Methylenebis(cyclohexane-1β-amine);4β-[(4β-Aminocyclohexane-1α-yl)methyl]cyclohexane-1α-amine
• CAS NO: 6693-29-4
• Molecular Formula: C₁₃H₂₆N₂
• Molecular Weight: 210.35894
• EINECS: 229-737-8
• Mol File: 6693-29-4.mol
• Article Data: 5

Chemical Properties

• Melting Point: 64.7°C
• Boiling Point: 339.9°C (rough estimate)
• Appearance: /
• Density: 0.9578 (rough estimate)
• Refractive Index: 1.5032
• CAS DataBase Reference: [trans(trans)]-4,4'-methylenebis(cyclohexylamine)(CAS DataBase Reference)
• NIST Chemistry Reference: [trans(trans)]-4,4'-methylenebis(cyclohexylamine)(6693-29-4)
• EPA Substance Registry System: [trans(trans)]-4,4'-methylenebis(cyclohexylamine)(6693-29-4)

Safety Data

• Hazardous Substances Data: 6693-29-4(Hazardous Substances Data)

Usage

General Description

"[trans(trans)]-4,4'-methylenebis(cyclohexylamine)" is a chemical compound that is also known as MCDE or trans-4,4’-Methylene-bis(cyclohexylamine). It is a colorless to pale yellow liquid with a faint odor, and it is soluble in water. [trans(trans)]-4,4'-methylenebis(cyclohexylamine) is commonly used as a curing agent for epoxy resins, as well as in the production of polyurethanes. It is known for its ability to improve the impact resistance and flexibility of epoxy resins, making it valuable in applications where toughness and durability are required. However, it is important to handle this chemical with care, as it can be hazardous if not used properly. Overall, [trans(trans)]-4,4'-methylenebis(cyclohexylamine) plays a crucial role in the production of high-performance materials for various industries.

Upstream product

• 620-92-8 bis-(4-hydroxyphenyl)methane 
• 101-77-9 4,4'-diamino diphenyl methane 
• 1761-71-3 4,4'-diaminodicyclohexylmethane 

Downstream Products

• 60324-95-0 C₁₉H₃₂Cl₂N₆O₄ 
• 61366-99-2 C₁₉H₃₄Cl₂N₄O₂ 
• 52506-03-3 bis-(trans-4-acetylamino-cyclohexyl)-methane 

Relevant articles and documents

Ceria supported Ru0-Ruδ+ clusters as efficient catalyst for arenes hydrogenation

Selective hydrogenation of aromatic amines, especially chemicals such as aniline and bis(4-aminocyclohexyl)methane for non-yellowing polyurethane, is of particular interests due to the extensive applications. To conquer the existing difficulties in selective hydrogenation, the Ru0-Ruδ+/CeO2 catalyst with solid frustrated Lewis pairs was developed for aromatic amines hydrogenation with excellent activity and selectivity under relative milder conditions. The morphology, electronic and chemical properties, especially the Ru0-Ruδ+ clusters and reducible ceria were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electronic microscopy (SEM), X-ray photoelectron spectroscopy (XPS), CO2 temperature programmed desorption (CO2-TPD), H2 temperature programmed reduction (H2-TPR), H2 diffuse reflectance Fourier transform infrared spectroscopy (H2-DRIFT), Raman, etc. The 2% Ru/CeO2 catalyst exhibited good conversion of 95% and selectivity greater than 99% toward cyclohexylamine. The volcano curve describing the activity and Ru state was found. Owning to the “acidic site isolation” by surrounding alkaline sites, condensation between the neighboring amine molecules could be effectively suppressed. The catalyst also showed good stability and applicability for other aromatic amines and heteroarenes containing different functional groups.

PROCESS FOR HYDROGENATING 4,4'-METHYLENEDIANILINE

The present invention relates to a process for hydrogenating 4,4′-methylenedianiline and/or polymeric MDA with hydrogen in the presence of a catalyst comprising ruthenium on a zirconium oxide support material, and also to the use of a catalyst comprising ruthenium on a zirconium oxide support material for hydrogenating 4,4′-methylenedianiline and/or polymeric MDA.

Process for hydrogenation of aromatic amines in presence of a supported ruthenium catalyst

Hydrogenation of an amine with at least one aromatic ring-bonded amine group by reaction with hydrogen in presence of a supported catalyst with 0.01-20 wt.% active metal comprising ruthenium alone or with a sub-Group I, VII or VIII metal is such that the support has: (I) a BET surface area above 30 but below 70 m2/g; and (II) a macropore (diameter above 50nm) content above 50% and a mesopore (diameter 2-50nm) content below 50%.