Preparation of amorphous/semicrystalline semi-aromatic (co)polyamides
US5336754A · kind A · utility
5Cited by
1References
4Claims
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Key dates
| Filing date | Jan 4, 1993 |
| Grant date | Aug 9, 1994 |
| Priority date | — |
| Expiry date | Jan 4, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/28
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Amorphous or semicrystalline semi-aromatic copolyamides are prepared, with significantly reduced loss of amino reactant, by polycondensing an acidic monomer which includes at least one aromatic dicarboxylic acid having from 8 to 18 carbon atoms with an amino comonomer consisting essentially of an alkylpentamethylenediamine, or salt thereof, wherein said polycondensation is carried out in a closed reaction zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.