Maturation or ripening inhibitor release from polymer, fiber, film, sheet or packaging
US9642356B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 14, 2010 |
| Grant date | May 9, 2017 |
| Priority date | — |
| Expiry date | Dec 14, 2030 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65D81/24
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Thermoplastic polyolefin polymer compositions, polymer chips, fibers, woven or nonwoven fabrics, films, closures, and laminates include a polymer and cyclodextrin compound with a volatile maturation inhibitor or an olefinic ethylene receptor antagonist in respiring produce materials. The polymer composition can also include a cyclodextrin-modified polymer or a substituted cyclodextrin. Olefinic ethylene inhibitors can be formed in the cyclodextrin composition, wherein the cyclodextrin releases the olefinic inhibitor composition when used in produce packaging materials. Coating compositions can also be made. The inhibitor is introduced into the materials and is released under controlled conditions of humidity. Upon release, the olefinic inhibitor blocks ethylene receptor sites on proteins that control maturation and can produce an extended period during which the produce does not substantially complete maturation or ripening to a degree leading to spoilage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.