Transparent amorphous polyamide having high Tg from hindered aromatic diamine and branched chain aliphatic diamine
US4937315A · kind A · utility
8Cited by
6References
5Claims
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Key dates
| Filing date | Jun 15, 1989 |
| Grant date | Jun 26, 1990 |
| Priority date | — |
| Expiry date | Jun 15, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L77/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Amorphous and transparent copolyamides having glass transition temperatures, Tg, greater than 140.degree. C. and improved thermomechanical properties, well adopted for the production of a wide variety of useful shaped articles, contain specified amounts of terephthalic acid, 2-methylpentamethylenediamine and hindered aromatic diamine recurring structural units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.