Polyamide oligomers and their use
US7786222B2 · kind B2 · utility
6Cited by
15References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 24, 2006 |
| Grant date | Aug 31, 2010 |
| Priority date | — |
| Expiry date | Jul 25, 2026 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L77/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to polyamide oligomers with linear or branched chain structure with a number average molar mass of 800 to 5000 g/mol, with basic end groups which are at least partially NH2 end groups and carboxyl end groups, produced by condensation of polyamide-forming monomers, the concentration of NH2 end groups being at most 300 mmol/kg and in that these end groups are present in excess in a ratio to the carboxyl end groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.