Hydroxy-functional poly(ether sulfonamides) as thermoplastic barrier resins
US5149768A · kind A · utility
31Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1991 |
| Grant date | Sep 22, 1992 |
| Priority date | — |
| Expiry date | Jun 21, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31511
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Hydroxy-functional poly(ether sulfonamides) prepared by polymerizing an N,N'-dialkyl or N,N'-diaryldisulfonamide with a diepoxide in the presence of a suitable catalyst exhibit high barrier properties. These are suitable for use in the manufacture of articles such as rigid containers and flexible films exhibiting high barrier to oxygen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.