Polyamides and objects obtained from them
US5422418A · kind A · utility
26Cited by
3References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 30, 1992 |
| Grant date | Jun 6, 1995 |
| Priority date | — |
| Expiry date | Dec 30, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L77/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to new polyamides comprising, on a mass basis: (a) 45 to 75% of an x,T unit, x being between 4 and 12 inclusive, the x,T unit being the condensation product of a diamine having x carbon atoms and of terephthalic acid, and (b) 55 to 25% of an aliphatic unit -HN-(CH.sub.2).sub.n -CO, n being between 6 and 14 inclusive. and the terpolyamides obtained by including a monomeric unit (c) such as the unit 6 or 6,I as a replacement for part of the aliphatic unit (b). The polyamide compositions thus obtained exhibit a Tg lower than 130.degree. C., a Tm higher than 230.degree. C. and a good crystallizability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.