22824-04-0

Basic information

• Product Name: 1,4-phenylene bis-phenylcarbamate
• Synonyms: 1,4-phenylene bis-phenylcarbamate
• CAS NO: 22824-04-0
• Molecular Weight: 348.358
• Mol File: 22824-04-0.mol

Chemical Properties

• CAS DataBase Reference: 1,4-phenylene bis-phenylcarbamate(CAS DataBase Reference)
• NIST Chemistry Reference: 1,4-phenylene bis-phenylcarbamate(22824-04-0)
• EPA Substance Registry System: 1,4-phenylene bis-phenylcarbamate(22824-04-0)

Safety Data

• Hazardous Substances Data: 22824-04-0(Hazardous Substances Data)

Upstream product

• 6465-00-5 (4-Amino-phenyl)-carbamic acid phenyl ester 
• 1885-14-9 phenyl chloroformate 
• 106-50-3 1,4-phenylenediamine 
• 102-09-0 bis(phenyl) carbonate 
• 6465-01-6 (4-nitrophenyl)carbamic acid phenyl ester 

Relevant articles and documents

METHOD FOR PRODUCING AMIDES OR POLYAMIDES BY USING AROMATIC CARBAMATES BY WAY OF ISOCYANATES AS PRECURSORS THROUGH CATALYZED THERMAL PROCESSES AND METHOD FOR PRODUCING AROMATIC CARBAMATE PRECURSORS FROM AROMATIC AMINES

The present invention is directed to a process for preparing amides or polyamides by replacing isocyanate starting materials of a catalyzed thermal reaction with aromatic carbamates. Through the catalyzed thermal process involving a non-isocyanate precursor of the present invention, efficiency for producing amides or polyamides can be significantly improved, and the impure side products produced from a side reaction of isocyanate can be greatly curtailed. Hence, amides or polyamides of high purity and yield can be achieved. The invention also relates to a process for preparing aromatic carbamates, the new non-isocyanate precursors for amides or polyamides.

Process for producing aryl carbamates

PCT No. PCT/JP98/00592 Sec. 371 Date Oct. 13, 1998 Sec. 102(e) Date Oct. 13, 1998 PCT Filed Feb. 13, 1998 PCT Pub. No. WO98/35936 PCT Pub. Date Aug. 20, 1998A process for producing an aryl carbamate of a high purity at a high yield by reacting a diaryl carbonate with an amine compound having one or more hydrogen atoms bonded to the N position in the presence of carboxylic acid(s) of the following general formulae (I): R1-COOH and/or (II): R2-COOH (wherein R1 represents an alkyl or cycloalkyl group having an alpha -positioned carbon atom bonded to only one hydrogen atom, an alkyl group having an alpha -positioned carbon atom bonded to no hydrogen atom, or an aryl or heterocyclic group, and R2 represents an alkyl group having an alpha -positioned carbon atom bonded to two or more hydrogen atoms).