Process for making partially aromatic polyamides containing 2-methylpentamethylenediamine units
US5270437A · kind A · utility
7Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 13, 1992 |
| Grant date | Dec 14, 1993 |
| Priority date | — |
| Expiry date | Nov 13, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/265
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymers of aromatic diacids and 2-methylpentamethylenediamine are prepared in the presence of formic acid. The formic acid reduces the tendency of the 2-methylpentamethylenediamine to cyclize.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.