Method for synthesizing aromatic polymers
US5576417A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 13, 1994 |
| Grant date | Nov 19, 1996 |
| Priority date | — |
| Expiry date | Sep 13, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/32
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
There is disclosed a method for producing aromatic polyamides represented by the following formula (III), which comprises reacting an aromatic dihalogen compound represented by the following formula (I) with a diamine compound represented by the following formula (II) in the presence of cobalt/phosphine complex and a basic substance under carbon monoxide atmosphere: EQU X.sub.1 --Ar--X.sub.2 formula (I) wherein Ar represents an aromatic residue and X.sub.1 and X.sub.2 each represent a bromine or iodine atom, EQU H.sub.2 N--R--NH.sub.2 formula (II) wherein R represents a divalent hydrocarbon group, and formula (III) ##STR1## wherein Ar and R each have the same meaning as the above, and n is a positive integer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.