Process for the production of linear amorphous polyamides with excess diamine
US5245005A · kind A · utility
4Cited by
10References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1992 |
| Grant date | Sep 14, 1993 |
| Priority date | — |
| Expiry date | Apr 10, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/28
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process is disclosed for the production of linear amorphous polyamides which results in polyamides having more amine endgroups than acid endgroups. It comprises condensing an aqueous solution of salts comprising at least one aromatic diacid containing from 7 to 20 carbon atoms and a greater than equimolar amount of at least one aliphatic diamine containing from 4 to 20 carbon atoms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.