47636-24-8

Basic information

• Product Name: dibutyl diphenyl methane-4,4’-dicarbamate
• Synonyms: dibutyl diphenyl methane-4,4’-dicarbamate
• CAS NO: 47636-24-8
• Molecular Weight: 398.502
• Mol File: 47636-24-8.mol
• Article Data: 6

Chemical Properties

• CAS DataBase Reference: dibutyl diphenyl methane-4,4’-dicarbamate(CAS DataBase Reference)
• NIST Chemistry Reference: dibutyl diphenyl methane-4,4’-dicarbamate(47636-24-8)
• EPA Substance Registry System: dibutyl diphenyl methane-4,4’-dicarbamate(47636-24-8)

Safety Data

• Hazardous Substances Data: 47636-24-8(Hazardous Substances Data)

Upstream product

• 2536-05-2 4,4′-methylenebis(phenylisocyanate) 
• 5873-54-1 2,4'-diisocyanatodiphenylmethane 
• 101-68-8 di(4-isocyanatophenyl)methane 
• 71-36-3 butan-1-ol 
• 124-38-9 carbon dioxide 
• 101-77-9 4,4'-diamino diphenyl methane 
• 203646-49-5 [4-(4-Isocyanato-benzyl)-phenyl]-carbamic acid butyl ester 

Downstream Products

• 101-68-8 di(4-isocyanatophenyl)methane 
• 99305-42-7 dibutyl (methylene-bis(cyclohexane-4,1,diyl))dicarbamate 
• 106-98-9 1-butylene 
• 124-38-9 carbon dioxide 
• 71-36-3 butan-1-ol 

Relevant articles and documents

Halogen-Free Synthesis of Carbamates from CO2 and Amines Using Titanium Alkoxides

A direct synthesis of carbamates from amines and carbon dioxide in the presence of Ti(OR)4 (R=nBu (1), Me (2), Et (3), nPr (4)) was investigated. Aniline was reacted with titanium n-butoxide (1) in the presence of carbon dioxide (5 MPa) to give the corresponding n-butyl N-phenylcarbamate (BPC) in nearly quantitative yield (99 %) within 20 min. Furthermore, 1 could be regenerated upon reaction with n-butanol during water removal. The recovered 1 could then be reused in a subsequent reaction.

PROCESS FOR PRODUCING ISOCYANATE

An object of the present invention is to provide a process allowing long-term, stable production of isocyanates at a high yield without the various problems found in the prior art during production of isocyanates without using phosgene. The present invention discloses a process for producing an isocyanate by subjecting a carbamic acid ester to a decomposition reaction in the presence of a compound having an active proton and a carbonic acid derivative.

Method for synthesis of aliphatic isocyanates from aromatic isocyanates

The invention relates to a method for synthesis of aliphatic isocyanates from aromatic isocyanates in substantially 3 stages. In particular, the invention relates to a method for synthesis of bis{4-isocyanatocyclohexyl}methane (H12MDI) from bis{4-isocyanatophenyl}methane (MDI). More especially, the invention relates to a method for synthesis of H12MDI with a trans-trans isomer content of 30%, preferably of 20%, particularly preferably of 5 to 15%.