Multi-layer greenhouse film with superior anti-dripping performance
US10603877B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2015 |
| Grant date | Mar 31, 2020 |
| Priority date | — |
| Expiry date | Dec 8, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2650/58
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A multi-layer film comprising: a) a first layer comprising i) a polyolefin component; and ii) a polyethylene oxide/polyethylene copolymer having a Hydrophile-Lipophile Balance value in the range of from 2 to 6; b) a second layer comprising i) a polyolefin component; ii) from 1 to 5 weight percent of an additive selected from the group consisting of sorbitan esters, polyoxyethylene esters, glycerol esters, polyglycerol esters, fluorine-based compounds and combinations thereof, wherein the additive has a Hydrophile-Lipophile Balance value in the range of from 7 to 18; and iii) an inorganic filler; wherein the second layer is adjacent to the first layer and c) a skin layer comprising a polyolefin component, is disclosed. The multi-layer film is used in greenhouse applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.