Coated polymeric film with oxygen barrier properties
US7521103B2 · kind B2 · utility
12Cited by
9References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 22, 2006 |
| Grant date | Apr 21, 2009 |
| Priority date | — |
| Expiry date | Aug 3, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31935
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A coating compositions for providing substrates with oxygen barrier properties is disclosed. The substrate may be, for instance, a film, such as a polyester film. The coating composition includes a copolymer of maleic acid and acrylic acid and a copolymer of vinyl alcohol and a vinylamine. The barrier coating formed from the coating composition is typically less than about 1 micron in thickness and provides reduced oxygen transmission even at relatively high relative humidities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.