Semiaromatic polyamide comprising a chain ending
US9012026B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2014 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Apr 1, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31725
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a copolyamide comprising at least two different units corresponding to the following general formulation:A/X.TA is chosen from a unit obtained from an amino acid, a unit obtained from a lactam and a unit corresponding to the formula (Ca diamine).(Cb diacid), with a representing the number of carbon atoms of the diamine and b representing the number of carbon atoms of the diacid, a and b each being between 4 and 36, advantageously between 9 and 18,X.T denotes a unit obtained from the polycondensation of a Cx diamine and of terephthalic acid, with x representing the number of carbon atoms of the Cx diamine, x being between 9 and 36, advantageously between 10 and 18,characterized in that said copolyamide exhibits:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.