Hydroxy-functional poly(amide ethers) as thermoplastic barrier resins
US5089588A · kind A · utility
51Cited by
7References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1991 |
| Grant date | Feb 18, 1992 |
| Priority date | — |
| Expiry date | Feb 26, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G69/40
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Hydroxy-functional poly(amide-ethers) are fabricated into articles such as rigid containers and flexible films exhibiting high barrier to oxygen transmission in both dry and moist environments. For example, a polymer prepared by reacting the diglycidyl ether of 4,4'-biphenol with N,N'-bis(m-hydroxyphenyl)-adipamide exhibits especially high barrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.