Agricultural mulch films with triggered degradation
US6462120B2 · kind B2 · utility
2Cited by
5References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 24, 2000 |
| Grant date | Oct 8, 2002 |
| Priority date | — |
| Expiry date | Mar 24, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/91
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for enhancing biodegradability of a shaped article, includes the steps of providing a dimensionally stable shaped article; and contacting said article with a degradability triggering agent selected from the group consisting of chemical agents, enzymatic agents and biological agents selected from the group consisting of microbes and fungi. In a preferred embodiment the shaped article is an agricultural film that includes a cellulose ester having a degree of substitution greater than about 1.5.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.