Preparation of polyether amide from tetraethylene glycol diamine and terephthalic acid
US5118785A · kind A · utility
21Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1990 |
| Grant date | Jun 2, 1992 |
| Priority date | — |
| Expiry date | Apr 10, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/40
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polyether amides may be produced by reacting aromatic dicarboxylic acids with tetraethylene glycol diamine. This is surprising since aromatic dicarboxylic acids, such as terephthalic acid cannot be readily reacted with triethylene glycol diamine. Suitable dicarboxylic acids include terephthalic acid, isophthalic acid, t-butyl isophthalic acid, and mixtures thereof. Tetraethylene glycol diamine is also known as JEFFAMINE.RTM. EDR-192 Amine. The resulting polyether amides are useful to make polymers, including fibers, with unusually good water absorbancy properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.